aflatin2.c revision aacb8e1368a883fcbc9fe64fd0e460cef9c9b20c
1049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/***************************************************************************/ 2049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 3049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* aflatin.c */ 4049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 5049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* Auto-fitter hinting routines for latin script (body). */ 6049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 7aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich/* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by */ 8049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 10049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* This file is part of the FreeType project, and may only be used, */ 11049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* modified, and distributed under the terms of the FreeType project */ 12049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* this file you indicate that you have read the license and */ 14049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* understand and accept it fully. */ 15049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* */ 16049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/***************************************************************************/ 17049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 18049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 19295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner#include FT_ADVANCES_H 20295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 21049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include "aflatin.h" 22049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include "aflatin2.h" 23049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include "aferrors.h" 24049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 25049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 26049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef AF_USE_WARPER 27049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#include "afwarp.h" 28049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 29049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 30049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( FT_Error ) 31049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_compute_segments( AF_GlyphHints hints, 32049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ); 33049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 34049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( void ) 35049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_link_segments( AF_GlyphHints hints, 36049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ); 37049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 38049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 39049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 40049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 41049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** L A T I N G L O B A L M E T R I C S *****/ 42049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 43049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 44049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 45049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 46049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( void ) 47049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_init_widths( AF_LatinMetrics metrics, 48049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Face face, 49049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ULong charcode ) 50049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 51049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* scan the array of segments in each direction */ 52049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_GlyphHintsRec hints[1]; 53049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 54049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 55049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_init( hints, face->memory ); 56049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 57049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->axis[AF_DIMENSION_HORZ].width_count = 0; 58049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->axis[AF_DIMENSION_VERT].width_count = 0; 59049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 60049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 61049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error; 62049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt glyph_index; 63049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project int dim; 64049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinMetricsRec dummy[1]; 65049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Scaler scaler = &dummy->root.scaler; 66049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 67049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 68049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project glyph_index = FT_Get_Char_Index( face, charcode ); 69049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( glyph_index == 0 ) 70049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 71049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 72049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE ); 73049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error || face->glyph->outline.n_points <= 0 ) 74049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 75049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 76049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ZERO( dummy ); 77049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 78049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dummy->units_per_em = metrics->units_per_em; 79049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler->x_scale = scaler->y_scale = 0x10000L; 80049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler->x_delta = scaler->y_delta = 0; 81049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler->face = face; 82049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler->render_mode = FT_RENDER_MODE_NORMAL; 83049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler->flags = 0; 84049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 85049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_rescale( hints, (AF_ScriptMetrics)dummy ); 86049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 87aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich error = af_glyph_hints_reload( hints, &face->glyph->outline ); 88049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 89049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 90049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 91049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( dim = 0; dim < AF_DIMENSION_MAX; dim++ ) 92049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 93049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis axis = &metrics->axis[dim]; 94049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_AxisHints axhints = &hints->axis[dim]; 95049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment seg, limit, link; 96049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt num_widths = 0; 97049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 98049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 99049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_latin2_hints_compute_segments( hints, 100049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Dimension)dim ); 101049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 102049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 103049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 104049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_link_segments( hints, 105049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Dimension)dim ); 106049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 107049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg = axhints->segments; 108049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project limit = seg + axhints->num_segments; 109049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 110049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; seg < limit; seg++ ) 111049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 112049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project link = seg->link; 113049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 114049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we only consider stem segments there! */ 115049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( link && link->link == seg && link > seg ) 116049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 117049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist; 118049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 119049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 120049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = seg->pos - link->pos; 121049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 0 ) 122049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 123049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 124049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( num_widths < AF_LATIN_MAX_WIDTHS ) 125049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->widths[ num_widths++ ].org = dist; 126049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 127049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 128049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 129049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_sort_widths( num_widths, axis->widths ); 130049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->width_count = num_widths; 131049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 132049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 133049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project Exit: 134049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( dim = 0; dim < AF_DIMENSION_MAX; dim++ ) 135049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 136049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis axis = &metrics->axis[dim]; 137049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos stdw; 138049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 139049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 140049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project stdw = ( axis->width_count > 0 ) 141049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ? axis->widths[0].org 142049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project : AF_LATIN_CONSTANT( metrics, 50 ); 143049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 144049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* let's try 20% of the smallest width */ 145049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->edge_distance_threshold = stdw / 5; 146049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->standard_width = stdw; 147049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->extra_light = 0; 148049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 149049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 150049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 151049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_done( hints ); 152049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 153049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 154049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 155049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 156049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#define AF_LATIN_MAX_TEST_CHARACTERS 12 157049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 158049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 159295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner static const char af_latin2_blue_chars[AF_LATIN_MAX_BLUES][AF_LATIN_MAX_TEST_CHARACTERS+1] = 160049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 161049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "THEZOCQS", 162049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "HEZLOCUS", 163049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "fijkdbh", 164049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "xzroesc", 165049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "xzroesc", 166049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "pqgjy" 167049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project }; 168049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 169049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 170049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static void 171049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_init_blues( AF_LatinMetrics metrics, 172049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Face face ) 173049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 174049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos flats [AF_LATIN_MAX_TEST_CHARACTERS]; 175049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos rounds[AF_LATIN_MAX_TEST_CHARACTERS]; 176049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int num_flats; 177049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int num_rounds; 178049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int bb; 179049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinBlue blue; 180049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error; 181049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis axis = &metrics->axis[AF_DIMENSION_VERT]; 182049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_GlyphSlot glyph = face->glyph; 183049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 184049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 185049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we compute the blues simply by loading each character from the */ 186049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 'af_latin2_blue_chars[blues]' string, then compute its top-most or */ 187049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* bottom-most points (depending on `AF_IS_TOP_BLUE') */ 188049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 189049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "blue zones computation\n" )); 190049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "------------------------------------------------\n" )); 191049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 192049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( bb = 0; bb < AF_LATIN_BLUE_MAX; bb++ ) 193049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 194049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project const char* p = af_latin2_blue_chars[bb]; 195049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project const char* limit = p + AF_LATIN_MAX_TEST_CHARACTERS; 196049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos* blue_ref; 197049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos* blue_shoot; 198049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 199049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 200049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "blue %3d: ", bb )); 201049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 202049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project num_flats = 0; 203049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project num_rounds = 0; 204049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 205049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; p < limit && *p; p++ ) 206049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 207049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt glyph_index; 208049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int best_point, best_y, best_first, best_last; 209049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Vector* points; 210049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool round; 211049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 212049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 213049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "'%c'", *p )); 214049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 215049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* load the character in the face -- skip unknown or empty ones */ 216049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project glyph_index = FT_Get_Char_Index( face, (FT_UInt)*p ); 217049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( glyph_index == 0 ) 218049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 219049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 220049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE ); 221049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error || glyph->outline.n_points <= 0 ) 222049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 223049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 224049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now compute min or max point indices and coordinates */ 225049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project points = glyph->outline.points; 226049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_point = -1; 227049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_y = 0; /* make compiler happy */ 228049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_first = 0; /* ditto */ 229049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_last = 0; /* ditto */ 230049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 231049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 232049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int nn; 233049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int first = 0; 234049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int last = -1; 235049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 236049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 237049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( nn = 0; nn < glyph->outline.n_contours; first = last+1, nn++ ) 238049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 239049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int old_best_point = best_point; 240049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int pp; 241049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 242049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 243049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project last = glyph->outline.contours[nn]; 244049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 245049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Avoid single-point contours since they are never rasterized. */ 246049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* In some fonts, they correspond to mark attachment points */ 247049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* which are way outside of the glyph's real outline. */ 248049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( last == first ) 249049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 250049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 251049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( AF_LATIN_IS_TOP_BLUE( bb ) ) 252049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 253049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( pp = first; pp <= last; pp++ ) 254049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( best_point < 0 || points[pp].y > best_y ) 255049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 256049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_point = pp; 257049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_y = points[pp].y; 258049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 259049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 260049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 261049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 262049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( pp = first; pp <= last; pp++ ) 263049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( best_point < 0 || points[pp].y < best_y ) 264049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 265049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_point = pp; 266049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_y = points[pp].y; 267049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 268049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 269049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 270049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( best_point != old_best_point ) 271049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 272049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_first = first; 273049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_last = last; 274049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 275049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 276049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "%5d", best_y )); 277049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 278049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 279049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now check whether the point belongs to a straight or round */ 280049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* segment; we first need to find in which contour the extremum */ 281049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* lies, then inspect its previous and next points */ 282049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 283049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int start, end, prev, next; 284049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist; 285049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 286049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 287049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now look for the previous and next points that are not on the */ 288049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* same Y coordinate. Threshold the `closeness'... */ 289049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project start = end = best_point; 290049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 291049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project do 292049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 293049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project prev = start-1; 294049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( prev < best_first ) 295049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project prev = best_last; 296049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 297049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = points[prev].y - best_y; 298049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < -5 || dist > 5 ) 299049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 300049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 301049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project start = prev; 302049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 303049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } while ( start != best_point ); 304049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 305049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project do 306049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 307049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project next = end+1; 308049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( next > best_last ) 309049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project next = best_first; 310049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 311049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = points[next].y - best_y; 312049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < -5 || dist > 5 ) 313049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 314049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 315049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project end = next; 316049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 317049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } while ( end != best_point ); 318049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 319049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now, set the `round' flag depending on the segment's kind */ 320049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project round = FT_BOOL( 321049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_CURVE_TAG( glyph->outline.tags[start] ) != FT_CURVE_TAG_ON || 322049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_CURVE_TAG( glyph->outline.tags[ end ] ) != FT_CURVE_TAG_ON ); 323049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 324049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "%c ", round ? 'r' : 'f' )); 325049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 326049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 327049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( round ) 328049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project rounds[num_rounds++] = best_y; 329049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 330049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project flats[num_flats++] = best_y; 331049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 332049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 333049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "\n" )); 334049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 335049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( num_flats == 0 && num_rounds == 0 ) 336049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 337049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 338049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * we couldn't find a single glyph to compute this blue zone, 339049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * we will simply ignore it then 340049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 341295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner AF_LOG(( "empty\n" )); 342049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 343049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 344049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 345049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we have computed the contents of the `rounds' and `flats' tables, */ 346049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now determine the reference and overshoot position of the blue -- */ 347049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we simply take the median value after a simple sort */ 348049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_sort_pos( num_rounds, rounds ); 349049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_sort_pos( num_flats, flats ); 350049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 351049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue = & axis->blues[axis->blue_count]; 352049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue_ref = & blue->ref.org; 353049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue_shoot = & blue->shoot.org; 354049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 355049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->blue_count++; 356049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 357049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( num_flats == 0 ) 358049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 359049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_ref = 360049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_shoot = rounds[num_rounds / 2]; 361049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 362049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( num_rounds == 0 ) 363049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 364049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_ref = 365049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_shoot = flats[num_flats / 2]; 366049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 367049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 368049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 369049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_ref = flats[num_flats / 2]; 370049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_shoot = rounds[num_rounds / 2]; 371049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 372049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 373049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* there are sometimes problems: if the overshoot position of top */ 374049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* zones is under its reference position, or the opposite for bottom */ 375049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* zones. We must thus check everything there and correct the errors */ 376049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( *blue_shoot != *blue_ref ) 377049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 378049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos ref = *blue_ref; 379049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos shoot = *blue_shoot; 380049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool over_ref = FT_BOOL( shoot > ref ); 381049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 382049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 383049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( AF_LATIN_IS_TOP_BLUE( bb ) ^ over_ref ) 384049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project *blue_shoot = *blue_ref = ( shoot + ref ) / 2; 385049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 386049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 387049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->flags = 0; 388049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( AF_LATIN_IS_TOP_BLUE( bb ) ) 389049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->flags |= AF_LATIN_BLUE_TOP; 390049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 391049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 392049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * The following flags is used later to adjust the y and x scales 393049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * in order to optimize the pixel grid alignment of the top of small 394049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * letters. 395049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 396049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( bb == AF_LATIN_BLUE_SMALL_TOP ) 397049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->flags |= AF_LATIN_BLUE_ADJUSTMENT; 398049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 399049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "-- ref = %ld, shoot = %ld\n", *blue_ref, *blue_shoot )); 400049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 401049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 402049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return; 403049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 404049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 405049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 406295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_LOCAL_DEF( void ) 407295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner af_latin2_metrics_check_digits( AF_LatinMetrics metrics, 408295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_Face face ) 409295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner { 410295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_UInt i; 411295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_Bool started = 0, same_width = 1; 412295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_Fixed advance, old_advance = 0; 413295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 414295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 415295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner /* check whether all ASCII digits have the same advance width; */ 416295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner /* digit `0' is 0x30 in all supported charmaps */ 417295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner for ( i = 0x30; i <= 0x39; i++ ) 418295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner { 419295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_UInt glyph_index; 420295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 421295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 422295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner glyph_index = FT_Get_Char_Index( face, i ); 423295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner if ( glyph_index == 0 ) 424295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner continue; 425295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 426295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner if ( FT_Get_Advance( face, glyph_index, 427295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_LOAD_NO_SCALE | 428295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_LOAD_NO_HINTING | 429295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_LOAD_IGNORE_TRANSFORM, 430295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner &advance ) ) 431295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner continue; 432295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 433295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner if ( started ) 434295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner { 435295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner if ( advance != old_advance ) 436295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner { 437295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner same_width = 0; 438295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner break; 439295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner } 440295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner } 441295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner else 442295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner { 443295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner old_advance = advance; 444295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner started = 1; 445295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner } 446295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner } 447295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 448295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner metrics->root.digits_have_same_width = same_width; 449295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner } 450295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 451295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 452049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( FT_Error ) 453049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_init( AF_LatinMetrics metrics, 454049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Face face ) 455049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 456049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error = AF_Err_Ok; 457049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_CharMap oldmap = face->charmap; 458049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt ee; 459049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 460049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static const FT_Encoding latin_encodings[] = 461049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 462049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ENCODING_UNICODE, 463049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ENCODING_APPLE_ROMAN, 464049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ENCODING_ADOBE_STANDARD, 465049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ENCODING_ADOBE_LATIN_1, 466049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ENCODING_NONE /* end of list */ 467049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project }; 468049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 469049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 470049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->units_per_em = face->units_per_EM; 471049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 472049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* do we have a latin charmap in there? */ 473049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ee = 0; latin_encodings[ee] != FT_ENCODING_NONE; ee++ ) 474049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 475049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = FT_Select_Charmap( face, latin_encodings[ee] ); 476049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !error ) 477049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 478049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 479049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 480049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !error ) 481049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 482049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* For now, compute the standard width and height from the `o'. */ 483049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_init_widths( metrics, face, 'o' ); 484049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_init_blues( metrics, face ); 485295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner af_latin2_metrics_check_digits( metrics, face ); 486049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 487049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 488049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Set_Charmap( face, oldmap ); 489049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return AF_Err_Ok; 490049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 491049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 492049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 493049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static void 494049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_scale_dim( AF_LatinMetrics metrics, 495049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Scaler scaler, 496049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ) 497049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 498049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed scale; 499049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos delta; 500049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis axis; 501049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt nn; 502049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 503049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 504049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_HORZ ) 505049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 506049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scale = scaler->x_scale; 507049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = scaler->x_delta; 508049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 509049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 510049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 511049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scale = scaler->y_scale; 512049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = scaler->y_delta; 513049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 514049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 515049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis = &metrics->axis[dim]; 516049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 517049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( axis->org_scale == scale && axis->org_delta == delta ) 518049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return; 519049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 520049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->org_scale = scale; 521049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->org_delta = delta; 522049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 523049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 524049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * correct Y scale to optimize the alignment of the top of small 525049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * letters to the pixel grid 526049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 527049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_VERT ) 528049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 529049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis vaxis = &metrics->axis[AF_DIMENSION_VERT]; 530049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinBlue blue = NULL; 531049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 532049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 533049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( nn = 0; nn < vaxis->blue_count; nn++ ) 534049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 535049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( vaxis->blues[nn].flags & AF_LATIN_BLUE_ADJUSTMENT ) 536049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 537049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue = &vaxis->blues[nn]; 538049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 539049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 540049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 541049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 542049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( blue ) 543049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 544049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos scaled = FT_MulFix( blue->shoot.org, scaler->y_scale ); 545049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos fitted = ( scaled + 40 ) & ~63; 546049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 547049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#if 1 548aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( scaled != fitted ) 549aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich { 550049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scale = FT_MulDiv( scale, fitted, scaled ); 551049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "== scaled x-top = %.2g fitted = %.2g, scaling = %.4g\n", scaled/64.0, fitted/64.0, (fitted*1.0)/scaled )); 552049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 553049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 554049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 555049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 556049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 557049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->scale = scale; 558049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->delta = delta; 559049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 560049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_HORZ ) 561049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 562049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.x_scale = scale; 563049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.x_delta = delta; 564049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 565049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 566049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 567049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.y_scale = scale; 568049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.y_delta = delta; 569049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 570049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 571049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* scale the standard widths */ 572049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( nn = 0; nn < axis->width_count; nn++ ) 573049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 574049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Width width = axis->widths + nn; 575049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 576049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 577049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project width->cur = FT_MulFix( width->org, scale ); 578049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project width->fit = width->cur; 579049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 580049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 581049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* an extra-light axis corresponds to a standard width that is */ 582049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* smaller than 0.75 pixels */ 583049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->extra_light = 584049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (FT_Bool)( FT_MulFix( axis->standard_width, scale ) < 32 + 8 ); 585049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 586049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_VERT ) 587049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 588049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* scale the blue zones */ 589049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( nn = 0; nn < axis->blue_count; nn++ ) 590049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 591049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinBlue blue = &axis->blues[nn]; 592049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist; 593049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 594049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 595049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->ref.cur = FT_MulFix( blue->ref.org, scale ) + delta; 596049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->ref.fit = blue->ref.cur; 597049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->shoot.cur = FT_MulFix( blue->shoot.org, scale ) + delta; 598049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->shoot.fit = blue->shoot.cur; 599049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->flags &= ~AF_LATIN_BLUE_ACTIVE; 600049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 601049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* a blue zone is only active if it is less than 3/4 pixels tall */ 602049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = FT_MulFix( blue->ref.org - blue->shoot.org, scale ); 603049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist <= 48 && dist >= -48 ) 604049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 605049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos delta1, delta2; 606049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 607049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta1 = blue->shoot.org - blue->ref.org; 608049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = delta1; 609049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta1 < 0 ) 610049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = -delta2; 611049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 612049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = FT_MulFix( delta2, scale ); 613049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 614049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta2 < 32 ) 615049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = 0; 616049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( delta2 < 64 ) 617049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = 32 + ( ( ( delta2 - 32 ) + 16 ) & ~31 ); 618049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 619049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = FT_PIX_ROUND( delta2 ); 620049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 621049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta1 < 0 ) 622049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta2 = -delta2; 623049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 624049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->ref.fit = FT_PIX_ROUND( blue->ref.cur ); 625049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->shoot.fit = blue->ref.fit + delta2; 626049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 627049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( ">> activating blue zone %d: ref.cur=%.2g ref.fit=%.2g shoot.cur=%.2g shoot.fit=%.2g\n", 628049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project nn, blue->ref.cur/64.0, blue->ref.fit/64.0, 629049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->shoot.cur/64.0, blue->shoot.fit/64.0 )); 630049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 631049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue->flags |= AF_LATIN_BLUE_ACTIVE; 632049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 633049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 634049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 635049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 636049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 637049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 638049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( void ) 639049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_scale( AF_LatinMetrics metrics, 640049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Scaler scaler ) 641049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 642049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.render_mode = scaler->render_mode; 643049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.face = scaler->face; 644049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 645049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_scale_dim( metrics, scaler, AF_DIMENSION_HORZ ); 646049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_metrics_scale_dim( metrics, scaler, AF_DIMENSION_VERT ); 647049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 648049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 649049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 650049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 651049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 652049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 653049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** L A T I N G L Y P H A N A L Y S I S *****/ 654049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 655049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 656049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 657049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 658049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#define SORT_SEGMENTS 659049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 660049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( FT_Error ) 661049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_compute_segments( AF_GlyphHints hints, 662049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ) 663049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 664049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_AxisHints axis = &hints->axis[dim]; 665049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Memory memory = hints->memory; 666049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error = AF_Err_Ok; 667049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segment = NULL; 668049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_SegmentRec seg0; 669049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point* contour = hints->contours; 670049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point* contour_limit = contour + hints->num_contours; 671049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Direction major_dir, segment_dir; 672049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 673049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 674049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ZERO( &seg0 ); 675049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg0.score = 32000; 676049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg0.flags = AF_EDGE_NORMAL; 677049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 678049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project major_dir = (AF_Direction)FT_ABS( axis->major_dir ); 679049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment_dir = major_dir; 680049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 681049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->num_segments = 0; 682049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 683049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* set up (u,v) in each point */ 684049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_HORZ ) 685049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 686049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point point = hints->points; 687049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point limit = point + hints->num_points; 688049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 689049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 690049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; point < limit; point++ ) 691049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 692049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point->u = point->fx; 693049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point->v = point->fy; 694049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 695049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 696049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 697049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 698049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point point = hints->points; 699049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point limit = point + hints->num_points; 700049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 701049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 702049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; point < limit; point++ ) 703049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 704049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point->u = point->fy; 705049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point->v = point->fx; 706049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 707049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 708049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 709049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* do each contour separately */ 710049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; contour < contour_limit; contour++ ) 711049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 712049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point point = contour[0]; 713049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point start = point; 714049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point last = point->prev; 715049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 716049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 717049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point == last ) /* skip singletons -- just in case */ 718049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 719049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 720049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* already on an edge ?, backtrack to find its start */ 721049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( FT_ABS( point->in_dir ) == major_dir ) 722049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 723049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point = point->prev; 724049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 725049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project while ( point->in_dir == start->in_dir ) 726049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point = point->prev; 727049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 728049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else /* otherwise, find first segment start, if any */ 729049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 730049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project while ( FT_ABS( point->out_dir ) != major_dir ) 731049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 732049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point = point->next; 733049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 734049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point == start ) 735049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto NextContour; 736049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 737049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 738049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 739049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project start = point; 740049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 741049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for (;;) 742049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 743049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point first; 744049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos min_u, min_v, max_u, max_v; 745049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 746049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we're at the start of a new segment */ 747049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ASSERT( FT_ABS( point->out_dir ) == major_dir && 748049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point->in_dir != point->out_dir ); 749049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project first = point; 750049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 751049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project min_u = max_u = point->u; 752049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project min_v = max_v = point->v; 753049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 754049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point = point->next; 755049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 756049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project while ( point->out_dir == first->out_dir ) 757049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 758049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point = point->next; 759049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 760049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point->u < min_u ) 761049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project min_u = point->u; 762049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 763049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point->u > max_u ) 764049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project max_u = point->u; 765049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 766049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 767049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point->v < min_v ) 768049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project min_v = point->v; 769049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 770049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point->v > max_v ) 771049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project max_v = point->v; 772049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 773049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* record new segment */ 774049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_axis_hints_new_segment( axis, memory, &segment ); 775049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 776049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 777049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 778049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment[0] = seg0; 779049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->dir = first->out_dir; 780049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->first = first; 781049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->last = point; 782049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->contour = contour; 783049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->pos = (FT_Short)(( min_u + max_u ) >> 1); 784049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->min_coord = (FT_Short) min_v; 785049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->max_coord = (FT_Short) max_v; 786049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->height = (FT_Short)(max_v - min_v); 787049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 788049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* a segment is round if it doesn't have successive */ 789049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* on-curve points. */ 790049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 791049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point pt = first; 792049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point last = point; 793049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Flags f0 = (AF_Flags)(pt->flags & AF_FLAG_CONTROL); 794049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Flags f1; 795049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 796049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 797049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->flags &= ~AF_EDGE_ROUND; 798049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 799049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; pt != last; f0 = f1 ) 800049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 801049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project pt = pt->next; 802049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project f1 = (AF_Flags)(pt->flags & AF_FLAG_CONTROL); 803049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 804049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !f0 && !f1 ) 805049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 806049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 807049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( pt == last ) 808049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->flags |= AF_EDGE_ROUND; 809049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 810049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 811049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 812049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* this can happen in the case of a degenerate contour 813049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * e.g. a 2-point vertical contour 814049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 815049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point == start ) 816049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 817049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 818049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* jump to the start of the next segment, if any */ 819049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project while ( FT_ABS(point->out_dir) != major_dir ) 820049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 821049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project point = point->next; 822049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 823049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( point == start ) 824049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto NextContour; 825049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 826049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 827049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 828049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project NextContour: 829049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ; 830049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } /* contours */ 831049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 832049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now slightly increase the height of segments when this makes */ 833049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* sense -- this is used to better detect and ignore serifs */ 834049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 835049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segments = axis->segments; 836049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segments_end = segments + axis->num_segments; 837049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 838049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 839049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( segment = segments; segment < segments_end; segment++ ) 840049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 841049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point first = segment->first; 842049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point last = segment->last; 843049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Point p; 844049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos first_v = first->v; 845049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos last_v = last->v; 846049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 847049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 848049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( first == last ) 849049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 850049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 851049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( first_v < last_v ) 852049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 853049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project p = first->prev; 854049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( p->v < first_v ) 855049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->height = (FT_Short)( segment->height + 856049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ( ( first_v - p->v ) >> 1 ) ); 857049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 858049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project p = last->next; 859049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( p->v > last_v ) 860049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->height = (FT_Short)( segment->height + 861049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ( ( p->v - last_v ) >> 1 ) ); 862049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 863049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 864049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 865049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project p = first->prev; 866049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( p->v > first_v ) 867049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->height = (FT_Short)( segment->height + 868049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ( ( p->v - first_v ) >> 1 ) ); 869049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 870049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project p = last->next; 871049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( p->v < last_v ) 872049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment->height = (FT_Short)( segment->height + 873049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ( ( last_v - p->v ) >> 1 ) ); 874049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 875049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 876049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 877049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 878049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef AF_SORT_SEGMENTS 879049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* place all segments with a negative direction to the start 880049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * of the array, used to speed up segment linking later... 881049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 882049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 883049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segments = axis->segments; 884049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt count = axis->num_segments; 885049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt ii, jj; 886049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 887049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for (ii = 0; ii < count; ii++) 888049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 889049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( segments[ii].dir > 0 ) 890049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 891049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for (jj = ii+1; jj < count; jj++) 892049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 893049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( segments[jj].dir < 0 ) 894049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 895049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_SegmentRec tmp; 896049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 897049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project tmp = segments[ii]; 898049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segments[ii] = segments[jj]; 899049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segments[jj] = tmp; 900049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 901049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 902049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 903049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 904049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 905049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( jj == count ) 906049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 907049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 908049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 909049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->mid_segments = ii; 910049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 911049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 912049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 913049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project Exit: 914049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return error; 915049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 916049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 917049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 918049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( void ) 919049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_link_segments( AF_GlyphHints hints, 920049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ) 921049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 922049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_AxisHints axis = &hints->axis[dim]; 923049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segments = axis->segments; 924049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segment_limit = segments + axis->num_segments; 925049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef AF_SORT_SEGMENTS 926049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segment_mid = segments + axis->mid_segments; 927049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 928049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos len_threshold, len_score; 929049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment seg1, seg2; 930049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 931049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 932049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project len_threshold = AF_LATIN_CONSTANT( hints->metrics, 8 ); 933049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( len_threshold == 0 ) 934049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project len_threshold = 1; 935049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 936049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project len_score = AF_LATIN_CONSTANT( hints->metrics, 6000 ); 937049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 938049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef AF_SORT_SEGMENTS 939049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( seg1 = segments; seg1 < segment_mid; seg1++ ) 940049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 941049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg1->dir != axis->major_dir || seg1->first == seg1->last ) 942049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 943049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 944049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( seg2 = segment_mid; seg2 < segment_limit; seg2++ ) 945049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#else 946049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now compare each segment to the others */ 947049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( seg1 = segments; seg1 < segment_limit; seg1++ ) 948049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 949049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* the fake segments are introduced to hint the metrics -- */ 950049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we must never link them to anything */ 951049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg1->dir != axis->major_dir || seg1->first == seg1->last ) 952049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 953049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 954049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( seg2 = segments; seg2 < segment_limit; seg2++ ) 955049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg1->dir + seg2->dir == 0 && seg2->pos > seg1->pos ) 956049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 957049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 958049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos pos1 = seg1->pos; 959049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos pos2 = seg2->pos; 960049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist = pos2 - pos1; 961049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 962049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 963049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 0 ) 964049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 965049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 966049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 967049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos min = seg1->min_coord; 968049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos max = seg1->max_coord; 969049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos len, score; 970049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 971049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 972049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( min < seg2->min_coord ) 973049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project min = seg2->min_coord; 974049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 975049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( max > seg2->max_coord ) 976049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project max = seg2->max_coord; 977049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 978049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project len = max - min; 979049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( len >= len_threshold ) 980049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 981049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project score = dist + len_score / len; 982049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( score < seg1->score ) 983049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 984049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg1->score = score; 985049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg1->link = seg2; 986049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 987049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 988049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( score < seg2->score ) 989049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 990049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg2->score = score; 991049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg2->link = seg1; 992049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 993049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 994049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 995049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 996049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 9970a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project#if 0 9980a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project } 9990a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project#endif 1000049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1001049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now, compute the `serif' segments */ 1002049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( seg1 = segments; seg1 < segment_limit; seg1++ ) 1003049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1004049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg2 = seg1->link; 1005049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1006049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg2 ) 1007049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1008049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg2->link != seg1 ) 1009049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1010049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg1->link = 0; 1011049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg1->serif = seg2->link; 1012049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1013049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1014049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1015049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1016049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1017049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1018049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( FT_Error ) 1019049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_compute_edges( AF_GlyphHints hints, 1020049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ) 1021049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1022049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_AxisHints axis = &hints->axis[dim]; 1023049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error = AF_Err_Ok; 1024049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Memory memory = hints->memory; 1025049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis laxis = &((AF_LatinMetrics)hints->metrics)->axis[dim]; 1026049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1027049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segments = axis->segments; 1028049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment segment_limit = segments + axis->num_segments; 1029049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment seg; 1030049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1031049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Direction up_dir; 1032049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed scale; 1033049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos edge_distance_threshold; 1034049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos segment_length_threshold; 1035049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1036049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1037049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->num_edges = 0; 1038049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1039049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scale = ( dim == AF_DIMENSION_HORZ ) ? hints->x_scale 1040049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project : hints->y_scale; 1041049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1042049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project up_dir = ( dim == AF_DIMENSION_HORZ ) ? AF_DIR_UP 1043049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project : AF_DIR_RIGHT; 1044049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1045049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1046049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * We want to ignore very small (mostly serif) segments, we do that 1047049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * by ignoring those that whose length is less than a given fraction 1048049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * of the standard width. If there is no standard width, we ignore 1049049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * those that are less than a given size in pixels 1050049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * 1051049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * also, unlink serif segments that are linked to segments farther 1052049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * than 50% of the standard width 1053049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1054049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_HORZ ) 1055049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1056049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( laxis->width_count > 0 ) 1057049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment_length_threshold = (laxis->standard_width * 10 ) >> 4; 1058049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1059049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment_length_threshold = FT_DivFix( 64, hints->y_scale ); 1060049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1061049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1062049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project segment_length_threshold = 0; 1063049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1064049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*********************************************************************/ 1065049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1066049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* We will begin by generating a sorted table of edges for the */ 1067049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* current direction. To do so, we simply scan each segment and try */ 1068049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* to find an edge in our table that corresponds to its position. */ 1069049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1070049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* If no edge is found, we create and insert a new edge in the */ 1071049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* sorted table. Otherwise, we simply add the segment to the edge's */ 1072049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* list which will be processed in the second step to compute the */ 1073049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* edge's properties. */ 1074049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1075049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Note that the edges table is sorted along the segment/edge */ 1076049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* position. */ 1077049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1078049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*********************************************************************/ 1079049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1080049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge_distance_threshold = FT_MulFix( laxis->edge_distance_threshold, 1081049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scale ); 1082049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge_distance_threshold > 64 / 4 ) 1083049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge_distance_threshold = 64 / 4; 1084049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1085049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge_distance_threshold = FT_DivFix( edge_distance_threshold, 1086049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scale ); 1087049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1088049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( seg = segments; seg < segment_limit; seg++ ) 1089049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1090049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge found = 0; 1091049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int ee; 1092049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1093049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1094049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg->height < segment_length_threshold ) 1095049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1096049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1097049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* A special case for serif edges: If they are smaller than */ 1098049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1.5 pixels we ignore them. */ 1099049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg->serif ) 1100049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1101049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist = seg->serif->pos - seg->pos; 1102049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1103049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (dist < 0) 1104049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 1105049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1106049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (dist >= laxis->standard_width >> 1) 1107049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1108049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* unlink this serif, it is too distant from its reference stem */ 1109049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg->serif = NULL; 1110049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1111049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( 2*seg->height < 3 * segment_length_threshold ) 1112049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1113049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1114049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1115049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* look for an edge corresponding to the segment */ 1116049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ee = 0; ee < axis->num_edges; ee++ ) 1117049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1118049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge = axis->edges + ee; 1119049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist; 1120049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1121049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1122049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = seg->pos - edge->fpos; 1123049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 0 ) 1124049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 1125049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1126049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < edge_distance_threshold && edge->dir == seg->dir ) 1127049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1128049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project found = edge; 1129049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 1130049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1131049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1132049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1133049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !found ) 1134049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1135049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge; 1136049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1137049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1138049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* insert a new edge in the list and */ 1139049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* sort according to the position */ 1140049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_axis_hints_new_edge( axis, seg->pos, seg->dir, memory, &edge ); 1141049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 1142049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 1143049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1144049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* add the segment to the new edge's list */ 1145049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_ZERO( edge ); 1146049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1147049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->first = seg; 1148049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->last = seg; 1149049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->fpos = seg->pos; 1150049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->dir = seg->dir; 1151049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->opos = edge->pos = FT_MulFix( seg->pos, scale ); 1152049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg->edge_next = seg; 1153049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1154049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1155049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1156049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if an edge was found, simply add the segment to the edge's */ 1157049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* list */ 1158049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg->edge_next = found->first; 1159049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project found->last->edge_next = seg; 1160049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project found->last = seg; 1161049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1162049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1163049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1164049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1165049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*********************************************************************/ 1166049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1167049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Good, we will now compute each edge's properties according to */ 1168049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* segments found on its position. Basically, these are: */ 1169049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1170049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - edge's main direction */ 1171049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - stem edge, serif edge or both (which defaults to stem then) */ 1172049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - rounded edge, straight or both (which defaults to straight) */ 1173049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* - link for edge */ 1174049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1175049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*********************************************************************/ 1176049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1177049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* first of all, set the `edge' field in each segment -- this is */ 1178049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* required in order to compute edge links */ 1179049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1180049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1181049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * Note that removing this loop and setting the `edge' field of each 1182049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * segment directly in the code above slows down execution speed for 1183049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * some reasons on platforms like the Sun. 1184049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1185049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1186049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edges = axis->edges; 1187049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge_limit = edges + axis->num_edges; 1188049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge; 1189049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1190049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1191049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( edge = edges; edge < edge_limit; edge++ ) 1192049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1193049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg = edge->first; 1194049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg ) 1195049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project do 1196049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1197049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg->edge = edge; 1198049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg = seg->edge_next; 1199049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1200049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } while ( seg != edge->first ); 1201049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1202049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1203049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now, compute each edge properties */ 1204049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( edge = edges; edge < edge_limit; edge++ ) 1205049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1206049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int is_round = 0; /* does it contain round segments? */ 1207049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int is_straight = 0; /* does it contain straight segments? */ 1208049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos ups = 0; /* number of upwards segments */ 1209049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos downs = 0; /* number of downwards segments */ 1210049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1211049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1212049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg = edge->first; 1213049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1214049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project do 1215049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1216049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool is_serif; 1217049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1218049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1219049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* check for roundness of segment */ 1220049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg->flags & AF_EDGE_ROUND ) 1221049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project is_round++; 1222049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1223049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project is_straight++; 1224049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1225049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* check for segment direction */ 1226049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg->dir == up_dir ) 1227049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ups += seg->max_coord-seg->min_coord; 1228049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1229049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project downs += seg->max_coord-seg->min_coord; 1230049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1231049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* check for links -- if seg->serif is set, then seg->link must */ 1232049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* be ignored */ 1233049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project is_serif = (FT_Bool)( seg->serif && 1234049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg->serif->edge && 1235049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg->serif->edge != edge ); 1236049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1237049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( ( seg->link && seg->link->edge != NULL ) || is_serif ) 1238049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1239049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge2; 1240049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Segment seg2; 1241049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1242049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1243049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = edge->link; 1244049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg2 = seg->link; 1245049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1246049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( is_serif ) 1247049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1248049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg2 = seg->serif; 1249049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = edge->serif; 1250049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1251049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1252049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge2 ) 1253049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1254049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos edge_delta; 1255049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos seg_delta; 1256049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1257049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1258049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge_delta = edge->fpos - edge2->fpos; 1259049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge_delta < 0 ) 1260049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge_delta = -edge_delta; 1261049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1262049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg_delta = seg->pos - seg2->pos; 1263049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg_delta < 0 ) 1264049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg_delta = -seg_delta; 1265049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1266049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( seg_delta < edge_delta ) 1267049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = seg2->edge; 1268049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1269049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1270049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = seg2->edge; 1271049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1272049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( is_serif ) 1273049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1274049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->serif = edge2; 1275049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2->flags |= AF_EDGE_SERIF; 1276049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1277049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1278049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->link = edge2; 1279049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1280049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1281049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project seg = seg->edge_next; 1282049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1283049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } while ( seg != edge->first ); 1284049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1285049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* set the round/straight flags */ 1286049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->flags = AF_EDGE_NORMAL; 1287049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1288049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( is_round > 0 && is_round >= is_straight ) 1289049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->flags |= AF_EDGE_ROUND; 1290049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1291049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#if 0 1292049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* set the edge's main direction */ 1293049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->dir = AF_DIR_NONE; 1294049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1295049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( ups > downs ) 1296049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->dir = (FT_Char)up_dir; 1297049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1298049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( ups < downs ) 1299049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->dir = (FT_Char)-up_dir; 1300049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1301049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( ups == downs ) 1302049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->dir = 0; /* both up and down! */ 1303049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 1304049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1305049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* gets rid of serifs if link is set */ 1306049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* XXX: This gets rid of many unpleasant artefacts! */ 1307049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* Example: the `c' in cour.pfa at size 13 */ 1308049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1309049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->serif && edge->link ) 1310049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->serif = 0; 1311049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1312049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1313049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1314049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project Exit: 1315049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return error; 1316049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1317049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1318049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1319049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( FT_Error ) 1320049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_detect_features( AF_GlyphHints hints, 1321049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ) 1322049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1323049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error; 1324049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1325049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1326049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_latin2_hints_compute_segments( hints, dim ); 1327049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !error ) 1328049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1329049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_link_segments( hints, dim ); 1330049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1331049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_latin2_hints_compute_edges( hints, dim ); 1332049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1333049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return error; 1334049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1335049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1336049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1337049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( void ) 1338049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_compute_blue_edges( AF_GlyphHints hints, 1339049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinMetrics metrics ) 1340049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1341049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_AxisHints axis = &hints->axis[ AF_DIMENSION_VERT ]; 1342049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge = axis->edges; 1343049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge_limit = edge + axis->num_edges; 1344049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis latin = &metrics->axis[ AF_DIMENSION_VERT ]; 1345049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed scale = latin->scale; 1346049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos best_dist0; /* initial threshold */ 1347049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1348049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1349049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* compute the initial threshold as a fraction of the EM size */ 1350049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_dist0 = FT_MulFix( metrics->units_per_em / 40, scale ); 1351049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1352049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( best_dist0 > 64 / 2 ) 1353049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_dist0 = 64 / 2; 1354049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1355049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* compute which blue zones are active, i.e. have their scaled */ 1356049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* size < 3/4 pixels */ 1357049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1358049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* for each horizontal edge search the blue zone which is closest */ 1359049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( ; edge < edge_limit; edge++ ) 1360049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1361049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int bb; 1362049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Width best_blue = NULL; 1363049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos best_dist = best_dist0; 1364049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1365049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( bb = 0; bb < AF_LATIN_BLUE_MAX; bb++ ) 1366049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1367049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinBlue blue = latin->blues + bb; 1368049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool is_top_blue, is_major_dir; 1369049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1370049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1371049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* skip inactive blue zones (i.e., those that are too small) */ 1372049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !( blue->flags & AF_LATIN_BLUE_ACTIVE ) ) 1373049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1374049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1375049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if it is a top zone, check for right edges -- if it is a bottom */ 1376049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* zone, check for left edges */ 1377049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* */ 1378049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* of course, that's for TrueType */ 1379049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project is_top_blue = (FT_Byte)( ( blue->flags & AF_LATIN_BLUE_TOP ) != 0 ); 1380049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project is_major_dir = FT_BOOL( edge->dir == axis->major_dir ); 1381049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1382049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if it is a top zone, the edge must be against the major */ 1383049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* direction; if it is a bottom zone, it must be in the major */ 1384049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* direction */ 1385049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( is_top_blue ^ is_major_dir ) 1386049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1387049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist; 1388049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Width compare; 1389049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1390049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1391049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if it's a rounded edge, compare it to the overshoot position */ 1392049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if it's a flat edge, compare it to the reference position */ 1393049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->flags & AF_EDGE_ROUND ) 1394049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project compare = &blue->shoot; 1395049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1396049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project compare = &blue->ref; 1397049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1398049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = edge->fpos - compare->org; 1399049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (dist < 0) 1400049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 1401049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1402049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = FT_MulFix( dist, scale ); 1403049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < best_dist ) 1404049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1405049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_dist = dist; 1406049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_blue = compare; 1407049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1408049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1409049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#if 0 1410049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now, compare it to the overshoot position if the edge is */ 1411049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* rounded, and if the edge is over the reference position of a */ 1412049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* top zone, or under the reference position of a bottom zone */ 1413049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->flags & AF_EDGE_ROUND && dist != 0 ) 1414049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1415049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Bool is_under_ref = FT_BOOL( edge->fpos < blue->ref.org ); 1416049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1417049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1418049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( is_top_blue ^ is_under_ref ) 1419049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1420049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue = latin->blues + bb; 1421049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = edge->fpos - blue->shoot.org; 1422049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 0 ) 1423049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 1424049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1425049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = FT_MulFix( dist, scale ); 1426049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < best_dist ) 1427049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1428049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_dist = dist; 1429049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_blue = & blue->shoot; 1430049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1431049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1432049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1433049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 1434049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1435049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1436049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1437049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( best_blue ) 1438049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->blue_edge = best_blue; 1439049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1440049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1441049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1442049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1443049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static FT_Error 1444049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_init( AF_GlyphHints hints, 1445049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinMetrics metrics ) 1446049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1447049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Render_Mode mode; 1448049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt32 scaler_flags, other_flags; 1449049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Face face = metrics->root.scaler.face; 1450049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1451049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1452049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_rescale( hints, (AF_ScriptMetrics)metrics ); 1453049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1454049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1455049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * correct x_scale and y_scale if needed, since they may have 1456049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * been modified `af_latin2_metrics_scale_dim' above 1457049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1458049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints->x_scale = metrics->axis[AF_DIMENSION_HORZ].scale; 1459049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints->x_delta = metrics->axis[AF_DIMENSION_HORZ].delta; 1460049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints->y_scale = metrics->axis[AF_DIMENSION_VERT].scale; 1461049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints->y_delta = metrics->axis[AF_DIMENSION_VERT].delta; 1462049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1463049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* compute flags depending on render mode, etc. */ 1464049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project mode = metrics->root.scaler.render_mode; 1465049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1466049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#if 0 /* #ifdef AF_USE_WARPER */ 1467049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( mode == FT_RENDER_MODE_LCD || mode == FT_RENDER_MODE_LCD_V ) 1468049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1469049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.render_mode = mode = FT_RENDER_MODE_NORMAL; 1470049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1471049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 1472049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1473049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler_flags = hints->scaler_flags; 1474049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project other_flags = 0; 1475049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1476049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1477049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * We snap the width of vertical stems for the monochrome and 1478049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * horizontal LCD rendering targets only. 1479049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1480049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( mode == FT_RENDER_MODE_MONO || mode == FT_RENDER_MODE_LCD ) 1481049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project other_flags |= AF_LATIN_HINTS_HORZ_SNAP; 1482049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1483049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1484049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * We snap the width of horizontal stems for the monochrome and 1485049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * vertical LCD rendering targets only. 1486049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1487049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( mode == FT_RENDER_MODE_MONO || mode == FT_RENDER_MODE_LCD_V ) 1488049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project other_flags |= AF_LATIN_HINTS_VERT_SNAP; 1489049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1490049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1491049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * We adjust stems to full pixels only if we don't use the `light' mode. 1492049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1493049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( mode != FT_RENDER_MODE_LIGHT ) 1494049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project other_flags |= AF_LATIN_HINTS_STEM_ADJUST; 1495049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1496049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( mode == FT_RENDER_MODE_MONO ) 1497049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project other_flags |= AF_LATIN_HINTS_MONO; 1498049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1499049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 1500049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * In `light' hinting mode we disable horizontal hinting completely. 1501049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * We also do it if the face is italic. 1502049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1503049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( mode == FT_RENDER_MODE_LIGHT || 1504049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (face->style_flags & FT_STYLE_FLAG_ITALIC) != 0 ) 1505049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaler_flags |= AF_SCALER_FLAG_NO_HORIZONTAL; 1506049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1507049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints->scaler_flags = scaler_flags; 1508049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints->other_flags = other_flags; 1509049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1510049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return 0; 1511049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1512049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1513049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1514049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1515049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1516049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 1517049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** L A T I N G L Y P H G R I D - F I T T I N G *****/ 1518049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 1519049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1520049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1521049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1522049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* snap a given width in scaled coordinates to one of the */ 1523049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* current standard widths */ 1524049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1525049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static FT_Pos 1526049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_snap_width( AF_Width widths, 1527049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int count, 1528049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos width ) 1529049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1530049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project int n; 1531049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos best = 64 + 32 + 2; 1532049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos reference = width; 1533049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos scaled; 1534049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1535049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1536049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( n = 0; n < count; n++ ) 1537049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1538049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos w; 1539049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist; 1540049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1541049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1542049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project w = widths[n].cur; 1543049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = width - w; 1544049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 0 ) 1545049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 1546049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < best ) 1547049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1548049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best = dist; 1549049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project reference = w; 1550049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1551049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1552049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1553049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scaled = FT_PIX_ROUND( reference ); 1554049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1555049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( width >= reference ) 1556049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1557049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( width < scaled + 48 ) 1558049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project width = reference; 1559049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1560049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1561049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1562049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( width > scaled - 48 ) 1563049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project width = reference; 1564049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1565049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1566049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return width; 1567049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1568049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1569049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1570049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* compute the snapped width of a given stem */ 1571049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1572049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static FT_Pos 1573049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_compute_stem_width( AF_GlyphHints hints, 1574049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim, 1575049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos width, 1576049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge_Flags base_flags, 1577049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge_Flags stem_flags ) 1578049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1579049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinMetrics metrics = (AF_LatinMetrics) hints->metrics; 1580049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinAxis axis = & metrics->axis[dim]; 1581049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist = width; 1582049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int sign = 0; 1583049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int vertical = ( dim == AF_DIMENSION_VERT ); 1584049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1585049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1586049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UNUSED(base_flags); 1587049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1588049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !AF_LATIN_HINTS_DO_STEM_ADJUST( hints ) || 1589049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project axis->extra_light ) 1590049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return width; 1591049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1592049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 0 ) 1593049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1594049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -width; 1595049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project sign = 1; 1596049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1597049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1598049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( ( vertical && !AF_LATIN_HINTS_DO_VERT_SNAP( hints ) ) || 1599049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ( !vertical && !AF_LATIN_HINTS_DO_HORZ_SNAP( hints ) ) ) 1600049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1601049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* smooth hinting process: very lightly quantize the stem width */ 1602049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1603049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* leave the widths of serifs alone */ 1604049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1605049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( ( stem_flags & AF_EDGE_SERIF ) && vertical && ( dist < 3 * 64 ) ) 1606049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Done_Width; 1607049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1608049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#if 0 1609049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( ( base_flags & AF_EDGE_ROUND ) ) 1610049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1611049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 80 ) 1612049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = 64; 1613049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1614049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( dist < 56 ) 1615049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = 56; 1616049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 1617049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( axis->width_count > 0 ) 1618049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1619049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos delta; 1620049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1621049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1622049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* compare to standard width */ 1623049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( axis->width_count > 0 ) 1624049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1625049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = dist - axis->widths[0].cur; 1626049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1627049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta < 0 ) 1628049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = -delta; 1629049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1630049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta < 40 ) 1631049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1632049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = axis->widths[0].cur; 1633049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 48 ) 1634049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = 48; 1635049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1636049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Done_Width; 1637049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1638049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1639049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1640049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 3 * 64 ) 1641049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1642049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = dist & 63; 1643049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist &= -64; 1644049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1645049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta < 10 ) 1646049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist += delta; 1647049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1648049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( delta < 32 ) 1649049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist += 10; 1650049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1651049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( delta < 54 ) 1652049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist += 54; 1653049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1654049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1655049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist += delta; 1656049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1657049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1658049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 32 ) & ~63; 1659049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1660049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1661049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1662049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1663049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* strong hinting process: snap the stem width to integer pixels */ 1664049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos org_dist = dist; 1665049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1666049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1667049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = af_latin2_snap_width( axis->widths, axis->width_count, dist ); 1668049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1669049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( vertical ) 1670049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1671049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* in the case of vertical hinting, always round */ 1672049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* the stem heights to integer pixels */ 1673049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1674049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist >= 64 ) 1675049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 16 ) & ~63; 1676049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1677049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = 64; 1678049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1679049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1680049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1681049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( AF_LATIN_HINTS_DO_MONO( hints ) ) 1682049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1683049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* monochrome horizontal hinting: snap widths to integer pixels */ 1684049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* with a different threshold */ 1685049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1686049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 64 ) 1687049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = 64; 1688049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1689049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 32 ) & ~63; 1690049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1691049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1692049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1693049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* for horizontal anti-aliased hinting, we adopt a more subtle */ 1694049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* approach: we strengthen small stems, round stems whose size */ 1695049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* is between 1 and 2 pixels to an integer, otherwise nothing */ 1696049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1697049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 48 ) 1698049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 64 ) >> 1; 1699049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1700049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( dist < 128 ) 1701049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1702049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* We only round to an integer width if the corresponding */ 1703049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* distortion is less than 1/4 pixel. Otherwise this */ 1704049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* makes everything worse since the diagonals, which are */ 1705049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* not hinted, appear a lot bolder or thinner than the */ 1706049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* vertical stems. */ 1707049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1708049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int delta; 1709049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1710049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1711049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 22 ) & ~63; 1712049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = dist - org_dist; 1713049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta < 0 ) 1714049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = -delta; 1715049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1716049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (delta >= 16) 1717049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1718049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = org_dist; 1719049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dist < 48 ) 1720049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 64 ) >> 1; 1721049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1722049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1723049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1724049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* round otherwise to prevent color fringes in LCD mode */ 1725049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = ( dist + 32 ) & ~63; 1726049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1727049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1728049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1729049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1730049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project Done_Width: 1731049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( sign ) 1732049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project dist = -dist; 1733049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1734049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return dist; 1735049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1736049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1737049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1738049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* align one stem edge relative to the previous stem edge */ 1739049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1740049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static void 1741049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_align_linked_edge( AF_GlyphHints hints, 1742049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim, 1743049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge base_edge, 1744049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge stem_edge ) 1745049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1746049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos dist = stem_edge->opos - base_edge->opos; 1747049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1748049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos fitted_width = af_latin2_compute_stem_width( 1749049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints, dim, dist, 1750049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Edge_Flags)base_edge->flags, 1751049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Edge_Flags)stem_edge->flags ); 1752049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1753049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1754049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project stem_edge->pos = base_edge->pos + fitted_width; 1755049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1756049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "LINK: edge %d (opos=%.2f) linked to (%.2f), " 1757049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "dist was %.2f, now %.2f\n", 1758049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project stem_edge-hints->axis[dim].edges, stem_edge->opos / 64.0, 1759049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project stem_edge->pos / 64.0, dist / 64.0, fitted_width / 64.0 )); 1760049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1761049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1762049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1763049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static void 1764049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_align_serif_edge( AF_GlyphHints hints, 1765049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge base, 1766049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge serif ) 1767049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1768049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UNUSED( hints ); 1769049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1770049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project serif->pos = base->pos + (serif->opos - base->opos); 1771049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1772049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1773049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1774049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1775049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1776049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1777049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /**** ****/ 1778049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /**** E D G E H I N T I N G ****/ 1779049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /**** ****/ 1780049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1781049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1782049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 1783049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1784049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1785049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_LOCAL_DEF( void ) 1786049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hint_edges( AF_GlyphHints hints, 1787049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Dimension dim ) 1788049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1789049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_AxisHints axis = &hints->axis[dim]; 1790049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edges = axis->edges; 1791049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge_limit = edges + axis->num_edges; 1792049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge; 1793049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge anchor = 0; 1794049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Int has_serifs = 0; 1795049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos anchor_drift = 0; 1796049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1797049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1798049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1799049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "==== hinting %s edges =====\n", dim == AF_DIMENSION_HORZ ? "vertical" : "horizontal" )); 1800049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1801049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we begin by aligning all stems relative to the blue zone */ 1802049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if needed -- that's only for horizontal edges */ 1803049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1804049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( dim == AF_DIMENSION_VERT && AF_HINTS_DO_BLUES( hints ) ) 1805049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1806049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( edge = edges; edge < edge_limit; edge++ ) 1807049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1808049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Width blue; 1809049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge1, edge2; 1810049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1811049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1812049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->flags & AF_EDGE_DONE ) 1813049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1814049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1815049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue = edge->blue_edge; 1816049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1 = NULL; 1817049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = edge->link; 1818049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1819049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( blue ) 1820049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1821049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1 = edge; 1822049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1823049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( edge2 && edge2->blue_edge ) 1824049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1825049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project blue = edge2->blue_edge; 1826049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1 = edge2; 1827049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = edge; 1828049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1829049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1830049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !edge1 ) 1831049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1832049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1833049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "BLUE: edge %d (opos=%.2f) snapped to (%.2f), " 1834049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "was (%.2f)\n", 1835049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1-edges, edge1->opos / 64.0, blue->fit / 64.0, 1836049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1->pos / 64.0 )); 1837049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1838049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1->pos = blue->fit; 1839049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge1->flags |= AF_EDGE_DONE; 1840049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1841049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge2 && !edge2->blue_edge ) 1842049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1843049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_align_linked_edge( hints, dim, edge1, edge2 ); 1844049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2->flags |= AF_EDGE_DONE; 1845049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1846049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1847049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !anchor ) 1848049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1849049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project anchor = edge; 1850049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1851049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project anchor_drift = (anchor->pos - anchor->opos); 1852049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (edge2) 1853049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project anchor_drift = (anchor_drift + (edge2->pos - edge2->opos)) >> 1; 1854049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1855049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1856049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1857049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1858049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now we will align all stem edges, trying to maintain the */ 1859049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* relative order of stems in the glyph */ 1860049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( edge = edges; edge < edge_limit; edge++ ) 1861049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1862049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge edge2; 1863049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1864049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1865049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->flags & AF_EDGE_DONE ) 1866049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1867049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1868049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* skip all non-stem edges */ 1869049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2 = edge->link; 1870049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !edge2 ) 1871049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1872049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project has_serifs++; 1873049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1874049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1875049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1876049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now align the stem */ 1877049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1878049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* this should not happen, but it's better to be safe */ 1879049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge2->blue_edge ) 1880049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1881049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "ASSERTION FAILED for edge %d\n", edge2-edges )); 1882049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1883049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_align_linked_edge( hints, dim, edge2, edge ); 1884049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->flags |= AF_EDGE_DONE; 1885049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 1886049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1887049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1888049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( !anchor ) 1889049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1890049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos org_len, org_center, cur_len; 1891049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos cur_pos1, error1, error2, u_off, d_off; 1892049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1893049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1894049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_len = edge2->opos - edge->opos; 1895049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_len = af_latin2_compute_stem_width( 1896049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints, dim, org_len, 1897049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Edge_Flags)edge->flags, 1898049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Edge_Flags)edge2->flags ); 1899049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( cur_len <= 64 ) 1900049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project u_off = d_off = 32; 1901049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1902049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1903049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project u_off = 38; 1904049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project d_off = 26; 1905049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1906049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1907049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( cur_len < 96 ) 1908049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1909049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_center = edge->opos + ( org_len >> 1 ); 1910049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1911049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_pos1 = FT_PIX_ROUND( org_center ); 1912049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1913049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error1 = org_center - ( cur_pos1 - u_off ); 1914049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error1 < 0 ) 1915049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error1 = -error1; 1916049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1917049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error2 = org_center - ( cur_pos1 + d_off ); 1918049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error2 < 0 ) 1919049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error2 = -error2; 1920049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1921049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error1 < error2 ) 1922049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_pos1 -= u_off; 1923049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1924049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_pos1 += d_off; 1925049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1926049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = cur_pos1 - cur_len / 2; 1927049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2->pos = edge->pos + cur_len; 1928049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1929049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1930049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = FT_PIX_ROUND( edge->opos ); 1931049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1932049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "ANCHOR: edge %d (opos=%.2f) and %d (opos=%.2f) " 1933049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "snapped to (%.2f) (%.2f)\n", 1934049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->opos / 64.0, 1935049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2-edges, edge2->opos / 64.0, 1936049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos / 64.0, edge2->pos / 64.0 )); 1937049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project anchor = edge; 1938049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1939049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->flags |= AF_EDGE_DONE; 1940049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1941049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_align_linked_edge( hints, dim, edge, edge2 ); 1942049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1943049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2->flags |= AF_EDGE_DONE; 1944049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1945049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project anchor_drift = ( (anchor->pos - anchor->opos) + 1946049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (edge2->pos - edge2->opos)) >> 1; 1947049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1948049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "DRIFT: %.2f\n", anchor_drift/64.0 )); 1949049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1950049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1951049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1952049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos org_pos, org_len, org_center, cur_center, cur_len; 1953049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos org_left, org_right; 1954049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1955049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1956049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_pos = edge->opos + anchor_drift; 1957049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_len = edge2->opos - edge->opos; 1958049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_center = org_pos + ( org_len >> 1 ); 1959049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1960049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_len = af_latin2_compute_stem_width( 1961049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project hints, dim, org_len, 1962049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Edge_Flags)edge->flags, 1963049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Edge_Flags)edge2->flags ); 1964049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1965049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_left = org_pos + ((org_len - cur_len) >> 1); 1966049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_right = org_pos + ((org_len + cur_len) >> 1); 1967049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1968049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "ALIGN: left=%.2f right=%.2f ", org_left/64.0, org_right/64.0 )); 1969049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_center = org_center; 1970049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1971049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge2->flags & AF_EDGE_DONE ) 1972049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1973049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "\n" )); 1974049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = edge2->pos - cur_len; 1975049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1976049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 1977049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1978049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we want to compare several displacement, and choose 1979049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * the one that increases fitness while minimizing 1980049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * distortion as well 1981049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 1982049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos displacements[6], scores[6], org, fit, delta; 1983049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt count = 0; 1984049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1985049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* note: don't even try to fit tiny stems */ 1986049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( cur_len < 32 ) 1987049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1988049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "tiny stem\n" )); 1989049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto AlignStem; 1990049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1991049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1992049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* if the span is within a single pixel, don't touch it */ 1993049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( FT_PIX_FLOOR(org_left) == FT_PIX_CEIL(org_right) ) 1994049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 1995049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "single pixel stem\n" )); 1996049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto AlignStem; 1997049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 1998049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 1999049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (cur_len <= 96) 2000049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2001049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* we want to avoid the absolute worst case which is 2002049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * when the left and right edges of the span each represent 2003049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * about 50% of the gray. we'd better want to change this 2004049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * to 25/75%, since this is much more pleasant to the eye with 2005049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * very acceptable distortion 2006049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 2007049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos frac_left = (org_left) & 63; 2008049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos frac_right = (org_right) & 63; 2009049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2010049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( frac_left >= 22 && frac_left <= 42 && 2011049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project frac_right >= 22 && frac_right <= 42 ) 2012049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2013049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org = frac_left; 2014049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project fit = (org <= 32) ? 16 : 48; 2015049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = FT_ABS(fit - org); 2016049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project displacements[count] = fit - org; 2017049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scores[count++] = delta; 2018049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "dispA=%.2f (%d) ", (fit - org)/64.0, delta )); 2019049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2020049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org = frac_right; 2021049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project fit = (org <= 32) ? 16 : 48; 2022049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = FT_ABS(fit - org); 2023049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project displacements[count] = fit - org; 2024049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scores[count++] = delta; 2025049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "dispB=%.2f (%d) ", (fit - org)/64.0, delta )); 2026049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2027049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2028049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2029049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* snapping the left edge to the grid */ 2030049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org = org_left; 2031049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project fit = FT_PIX_ROUND(org); 2032049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = FT_ABS(fit - org); 2033049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project displacements[count] = fit - org; 2034049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scores[count++] = delta; 2035049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "dispC=%.2f (%d) ", (fit - org)/64.0, delta )); 2036049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2037049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* snapping the right edge to the grid */ 2038049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org = org_right; 2039049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project fit = FT_PIX_ROUND(org); 2040049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = FT_ABS(fit - org); 2041049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project displacements[count] = fit - org; 2042049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project scores[count++] = delta; 2043049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "dispD=%.2f (%d) ", (fit - org)/64.0, delta )); 2044049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2045049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* now find the best displacement */ 2046049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2047049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos best_score = scores[0]; 2048049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos best_disp = displacements[0]; 2049049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_UInt nn; 2050049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2051049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for (nn = 1; nn < count; nn++) 2052049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2053049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if (scores[nn] < best_score) 2054049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2055049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_score = scores[nn]; 2056049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project best_disp = displacements[nn]; 2057049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2058049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2059049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2060049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project cur_center = org_center + best_disp; 2061049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2062049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "\n" )); 2063049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2064049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2065049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AlignStem: 2066049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = cur_center - (cur_len >> 1); 2067049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2->pos = edge->pos + cur_len; 2068049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2069049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "STEM1: %d (opos=%.2f) to %d (opos=%.2f) " 2070049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "snapped to (%.2f) and (%.2f), org_len = %.2f cur_len=%.2f\n", 2071049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->opos / 64.0, 2072049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2-edges, edge2->opos / 64.0, 2073049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos / 64.0, edge2->pos / 64.0, 2074049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project org_len / 64.0, cur_len / 64.0 )); 2075049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2076049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->flags |= AF_EDGE_DONE; 2077049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge2->flags |= AF_EDGE_DONE; 2078049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2079049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge > edges && edge->pos < edge[-1].pos ) 2080049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2081049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "BOUND: %d (pos=%.2f) to (%.2f)\n", 2082049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->pos / 64.0, edge[-1].pos / 64.0 )); 2083049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = edge[-1].pos; 2084049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2085049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2086049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2087049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2088049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* make sure that lowercase m's maintain their symmetry */ 2089049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2090049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* In general, lowercase m's have six vertical edges if they are sans */ 2091049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* serif, or twelve if they are with serifs. This implementation is */ 2092049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* based on that assumption, and seems to work very well with most */ 2093049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* faces. However, if for a certain face this assumption is not */ 2094049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* true, the m is just rendered like before. In addition, any stem */ 2095049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* correction will only be applied to symmetrical glyphs (even if the */ 2096049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* glyph is not an m), so the potential for unwanted distortion is */ 2097049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* relatively low. */ 2098049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2099049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* We don't handle horizontal edges since we can't easily assure that */ 2100049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* the third (lowest) stem aligns with the base line; it might end up */ 2101049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* one pixel higher or lower. */ 2102295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 2103049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#if 0 2104295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner { 2105295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner FT_Int n_edges = edge_limit - edges; 2106295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 2107295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 2108aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( dim == AF_DIMENSION_HORZ && ( n_edges == 6 || n_edges == 12 ) ) 2109049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2110aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich AF_Edge edge1, edge2, edge3; 2111aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich FT_Pos dist1, dist2, span, delta; 2112049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2113049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2114aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( n_edges == 6 ) 2115aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich { 2116aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge1 = edges; 2117aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge2 = edges + 2; 2118aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge3 = edges + 4; 2119aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich } 2120aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich else 2121aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich { 2122aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge1 = edges + 1; 2123aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge2 = edges + 5; 2124aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge3 = edges + 9; 2125aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich } 2126049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2127aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich dist1 = edge2->opos - edge1->opos; 2128aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich dist2 = edge3->opos - edge2->opos; 2129049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2130aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich span = dist1 - dist2; 2131aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( span < 0 ) 2132aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich span = -span; 2133aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich 2134aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( span < 8 ) 2135049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2136aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich delta = edge3->pos - ( 2 * edge2->pos - edge1->pos ); 2137aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge3->pos -= delta; 2138aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( edge3->link ) 2139aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge3->link->pos -= delta; 2140049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2141aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich /* move the serifs along with the stem */ 2142aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( n_edges == 12 ) 2143aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich { 2144aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich ( edges + 8 )->pos -= delta; 2145aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich ( edges + 11 )->pos -= delta; 2146aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich } 2147aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich 2148aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge3->flags |= AF_EDGE_DONE; 2149aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich if ( edge3->link ) 2150aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich edge3->link->flags |= AF_EDGE_DONE; 2151aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich } 2152049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2153049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2154049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 2155295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner 2156049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( has_serifs || !anchor ) 2157049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2158049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* 2159049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * now hint the remaining edges (serifs and single) in order 2160049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project * to complete our processing 2161049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project */ 2162049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( edge = edges; edge < edge_limit; edge++ ) 2163049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2164049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos delta; 2165049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2166049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2167049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->flags & AF_EDGE_DONE ) 2168049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 2169049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2170049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = 1000; 2171049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2172049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge->serif ) 2173049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2174049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = edge->serif->opos - edge->opos; 2175049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta < 0 ) 2176049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project delta = -delta; 2177049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2178049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2179049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( delta < 64 + 16 ) 2180049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2181049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_align_serif_edge( hints, edge->serif, edge ); 2182049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "SERIF: edge %d (opos=%.2f) serif to %d (opos=%.2f) " 2183049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project "aligned to (%.2f)\n", 2184049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->opos / 64.0, 2185049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->serif - edges, edge->serif->opos / 64.0, 2186049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos / 64.0 )); 2187049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2188049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else if ( !anchor ) 2189049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2190049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "SERIF_ANCHOR: edge %d (opos=%.2f) snapped to (%.2f)\n", 2191049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->opos / 64.0, edge->pos / 64.0 )); 2192049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = FT_PIX_ROUND( edge->opos ); 2193049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project anchor = edge; 2194049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2195049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 2196049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2197049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_Edge before, after; 2198049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2199049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2200049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( before = edge - 1; before >= edges; before-- ) 2201049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( before->flags & AF_EDGE_DONE ) 2202049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 2203049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2204049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( after = edge + 1; after < edge_limit; after++ ) 2205049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( after->flags & AF_EDGE_DONE ) 2206049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project break; 2207049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2208049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( before >= edges && before < edge && 2209049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project after < edge_limit && after > edge ) 2210049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 22110a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project if ( after->opos == before->opos ) 22120a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project edge->pos = before->pos; 22130a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project else 22140a9d06e2b5cf75c3d6ba958026bfdf4745f576d6The Android Open Source Project edge->pos = before->pos + 2215049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_MulDiv( edge->opos - before->opos, 2216049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project after->pos - before->pos, 2217049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project after->opos - before->opos ); 2218049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "SERIF_LINK1: edge %d (opos=%.2f) snapped to (%.2f) from %d (opos=%.2f)\n", 2219049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->opos / 64.0, edge->pos / 64.0, before - edges, before->opos / 64.0 )); 2220049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2221049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project else 2222049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2223049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = anchor->pos + (( edge->opos - anchor->opos + 16) & ~31); 2224049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2225049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LOG(( "SERIF_LINK2: edge %d (opos=%.2f) snapped to (%.2f)\n", 2226049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge-edges, edge->opos / 64.0, edge->pos / 64.0 )); 2227049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2228049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2229049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2230049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->flags |= AF_EDGE_DONE; 2231049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2232049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge > edges && edge->pos < edge[-1].pos ) 2233049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = edge[-1].pos; 2234049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2235049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( edge + 1 < edge_limit && 2236049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge[1].flags & AF_EDGE_DONE && 2237049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos > edge[1].pos ) 2238049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project edge->pos = edge[1].pos; 2239049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2240049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2241049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2242049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2243049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2244049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static FT_Error 2245049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_apply( AF_GlyphHints hints, 2246049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Outline* outline, 2247049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_LatinMetrics metrics ) 2248049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2249049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Error error; 2250049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project int dim; 2251049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2252049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2253aacb8e1368a883fcbc9fe64fd0e460cef9c9b20cNick Kralevich error = af_glyph_hints_reload( hints, outline ); 2254049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 2255049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 2256049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2257049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* analyze glyph outline */ 2258049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef AF_USE_WARPER 2259049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( metrics->root.scaler.render_mode == FT_RENDER_MODE_LIGHT || 2260049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_HINTS_DO_HORIZONTAL( hints ) ) 2261049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#else 2262049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( AF_HINTS_DO_HORIZONTAL( hints ) ) 2263049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 2264049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2265049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_latin2_hints_detect_features( hints, AF_DIMENSION_HORZ ); 2266049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 2267049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 2268049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2269049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2270049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( AF_HINTS_DO_VERTICAL( hints ) ) 2271049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2272049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project error = af_latin2_hints_detect_features( hints, AF_DIMENSION_VERT ); 2273049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( error ) 2274049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project goto Exit; 2275049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2276049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hints_compute_blue_edges( hints, metrics ); 2277049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2278049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2279049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /* grid-fit the outline */ 2280049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project for ( dim = 0; dim < AF_DIMENSION_MAX; dim++ ) 2281049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2282049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#ifdef AF_USE_WARPER 2283049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( ( dim == AF_DIMENSION_HORZ && 2284049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project metrics->root.scaler.render_mode == FT_RENDER_MODE_LIGHT ) ) 2285049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2286049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_WarperRec warper; 2287049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Fixed scale; 2288049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project FT_Pos delta; 2289049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2290049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2291049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_warper_compute( &warper, hints, dim, &scale, &delta ); 2292049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_scale_dim( hints, dim, scale, delta ); 2293049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project continue; 2294049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2295049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project#endif 2296049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2297049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project if ( ( dim == AF_DIMENSION_HORZ && AF_HINTS_DO_HORIZONTAL( hints ) ) || 2298049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project ( dim == AF_DIMENSION_VERT && AF_HINTS_DO_VERTICAL( hints ) ) ) 2299049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2300049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_hint_edges( hints, (AF_Dimension)dim ); 2301049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_align_edge_points( hints, (AF_Dimension)dim ); 2302049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_align_strong_points( hints, (AF_Dimension)dim ); 2303049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_align_weak_points( hints, (AF_Dimension)dim ); 2304049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2305049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2306049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_glyph_hints_save( hints, outline ); 2307049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2308049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project Exit: 2309049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project return error; 2310049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project } 2311049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2312049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2313049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 2314049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 2315049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 2316049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** L A T I N S C R I P T C L A S S *****/ 2317049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /***** *****/ 2318049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 2319049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project /*************************************************************************/ 2320049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2321049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2322049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project static const AF_Script_UniRangeRec af_latin2_uniranges[] = 2323049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project { 2324295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner AF_UNIRANGE_REC( 32UL, 127UL ), /* XXX: TODO: Add new Unicode ranges here! */ 2325295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner AF_UNIRANGE_REC( 160UL, 255UL ), 2326295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner AF_UNIRANGE_REC( 0UL, 0UL ) 2327049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project }; 2328049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2329049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2330295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner AF_DEFINE_SCRIPT_CLASS(af_latin2_script_class, 2331049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project AF_SCRIPT_LATIN2, 2332049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project af_latin2_uniranges, 2333049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2334049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project sizeof( AF_LatinMetricsRec ), 2335049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2336049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Script_InitMetricsFunc) af_latin2_metrics_init, 2337049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Script_ScaleMetricsFunc)af_latin2_metrics_scale, 2338049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Script_DoneMetricsFunc) NULL, 2339049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2340049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Script_InitHintsFunc) af_latin2_hints_init, 2341049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project (AF_Script_ApplyHintsFunc) af_latin2_hints_apply 2342295ffce55e0198e7a9f7d46b33f5c2b4147bf821David 'Digit' Turner ) 2343049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2344049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project 2345049d6fea481044fcc000e7782e5bc7046fc70844The Android Open Source Project/* END */ 2346