helper-cairo.cc revision 52e7b1424a3613122e9ca30879298df42733acda
18b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod/* 28b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * Copyright © 2011 Google, Inc. 38b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * 48b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 58b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * 68b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * Permission is hereby granted, without written agreement and without 78b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 88b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * software and its documentation for any purpose, provided that the 98b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * all copies of this software. 118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * 128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 158b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 168b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * DAMAGE. 178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * 188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 198b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * 248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod * Google Author(s): Behdad Esfahbod 258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod */ 268b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 278b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#include "helper-cairo.hh" 288b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#include <cairo-ft.h> 308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#include <hb-ft.h> 318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod#include "helper-cairo-ansi.hh" 338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#ifdef CAIRO_HAS_SVG_SURFACE 348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# include <cairo-svg.h> 358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#endif 368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#ifdef CAIRO_HAS_PDF_SURFACE 378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# include <cairo-pdf.h> 388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#endif 398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#ifdef CAIRO_HAS_PS_SURFACE 408b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# include <cairo-ps.h> 418b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1,6,0) 428b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# define HAS_EPS 1 438b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 448b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_surface_t * 458b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod_cairo_eps_surface_create_for_stream (cairo_write_func_t write_func, 468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height) 498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 508b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 528b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_ps_surface_create_for_stream (write_func, closure, width, height); 538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_ps_surface_set_eps (surface, TRUE); 548b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 558b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return surface; 568b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 578b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 588b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# else 598b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# undef HAS_EPS 608b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod# endif 618b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#endif 628b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 638b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodcairo_scaled_font_t * 648b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_create_scaled_font (const font_options_t *font_opts, 658b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double font_size) 668b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 678b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_font_t *font = hb_font_reference (font_opts->get_font ()); 688b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 698b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_face_t *cairo_face; 708b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod FT_Face ft_face = hb_ft_font_get_face (font); 718b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (!ft_face) 728b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod /* This allows us to get some boxes at least... */ 738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_face = cairo_toy_font_face_create ("@cairo:sans", 748b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod CAIRO_FONT_SLANT_NORMAL, 758b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod CAIRO_FONT_WEIGHT_NORMAL); 768b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else 778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0); 788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_matrix_t ctm, font_matrix; 798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_t *font_options; 808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 818b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_matrix_init_identity (&ctm); 828b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_matrix_init_scale (&font_matrix, 838b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod font_size, font_size); 848b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod font_options = cairo_font_options_create (); 858b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_set_hint_style (font_options, CAIRO_HINT_STYLE_NONE); 868b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF); 878b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 888b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_scaled_font_t *scaled_font = cairo_scaled_font_create (cairo_face, 898b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &font_matrix, 908b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &ctm, 918b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod font_options); 928b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 938b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_destroy (font_options); 948b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_face_destroy (cairo_face); 958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod static cairo_user_data_key_t key; 978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (cairo_scaled_font_set_user_data (scaled_font, 988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &key, 998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (void *) font, 1008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (cairo_destroy_func_t) hb_font_destroy)) 1018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_font_destroy (font); 1028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return scaled_font; 1048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 1058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstruct finalize_closure_t { 1088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void (*callback)(finalize_closure_t *); 1098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 1108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_write_func_t write_func; 1118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure; 1128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod}; 1138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_user_data_key_t finalize_closure_key; 1148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 11552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 11652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbodstatic void 11752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbodfinalize_ansi (finalize_closure_t *closure) 11852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod{ 11952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_t status; 12052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod status = helper_cairo_surface_write_to_ansi_stream (closure->surface, 12152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod closure->write_func, 12252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod closure->closure); 12352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 12452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod fail (FALSE, "Failed to write output: %s", 12552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_to_string (status)); 12652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod} 12752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 12852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbodstatic cairo_surface_t * 12952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod_cairo_ansi_surface_create_for_stream (cairo_write_func_t write_func, 13052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod void *closure, 13152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod double width, 13252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod double height, 13352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_content_t content) 13452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod{ 13552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_surface_t *surface; 13652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod int w = ceil (width); 13752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod int h = ceil (height); 13852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 13952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod switch (content) { 14052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod case CAIRO_CONTENT_ALPHA: 14152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_A8, w, h); 14252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod break; 14352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod default: 14452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod case CAIRO_CONTENT_COLOR: 14552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, w, h); 14652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod break; 14752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod case CAIRO_CONTENT_COLOR_ALPHA: 14852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h); 14952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod break; 15052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod } 15152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_t status = cairo_surface_status (surface); 15252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 15352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod fail (FALSE, "Failed to create cairo surface: %s", 15452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_to_string (status)); 15552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 15652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod finalize_closure_t *ansi_closure = g_new0 (finalize_closure_t, 1); 15752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->callback = finalize_ansi; 15852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->surface = surface; 15952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->write_func = write_func; 16052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->closure = closure; 16152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 16252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (cairo_surface_set_user_data (surface, 16352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod &finalize_closure_key, 16452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod (void *) ansi_closure, 16552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod (cairo_destroy_func_t) g_free)) 16652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod g_free ((void *) closure); 16752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 16852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod return surface; 16952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod} 17052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 17152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 1728b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#ifdef CAIRO_HAS_PNG_FUNCTIONS 1738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1748b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic void 1758b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodfinalize_png (finalize_closure_t *closure) 1768b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 1778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_t status; 1788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod status = cairo_surface_write_to_png_stream (closure->surface, 1798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod closure->write_func, 1808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod closure->closure); 1818b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 1828b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fail (FALSE, "Failed to write output: %s", 1838b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_to_string (status)); 1848b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 1858b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1868b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_surface_t * 1878b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod_cairo_png_surface_create_for_stream (cairo_write_func_t write_func, 1888b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 1898b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 1908b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height, 1918b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_content_t content) 1928b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 1938b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 1948b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod int w = ceil (width); 1958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod int h = ceil (height); 1968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod switch (content) { 1988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_ALPHA: 1998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_A8, w, h); 2008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 2018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod default: 2028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR: 2038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, w, h); 2048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 2058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR_ALPHA: 2068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h); 2078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 2088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 2098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_t status = cairo_surface_status (surface); 2108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 2118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fail (FALSE, "Failed to create cairo surface: %s", 2128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_to_string (status)); 2138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod finalize_closure_t *png_closure = g_new0 (finalize_closure_t, 1); 2158b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->callback = finalize_png; 2168b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->surface = surface; 2178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->write_func = write_func; 2188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->closure = closure; 2198b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (cairo_surface_set_user_data (surface, 2218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &finalize_closure_key, 2228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (void *) png_closure, 2238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (cairo_destroy_func_t) g_free)) 2248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod g_free ((void *) closure); 2258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2268b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return surface; 2278b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 2288b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#endif 2308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_status_t 2328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstdio_write_func (void *closure, 2338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod const unsigned char *data, 2348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int size) 2358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 2368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod FILE *fp = (FILE *) closure; 2378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod while (size) { 2398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod size_t ret = fwrite (data, 1, size, fp); 2408b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod size -= ret; 2418b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod data += ret; 2428b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (size && ferror (fp)) 2438b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fail (FALSE, "Failed to write output: %s", strerror (errno)); 2448b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 2458b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return CAIRO_STATUS_SUCCESS; 2478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 2488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodcairo_t * 2508b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_create_context (double w, double h, 2518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod view_options_t *view_opts, 2528b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod output_options_t *out_opts) 2538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 2548b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *(*constructor) (cairo_write_func_t write_func, 2558b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 2568b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 2578b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height) = NULL; 2588b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *(*constructor2) (cairo_write_func_t write_func, 2598b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 2608b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 2618b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height, 2628b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_content_t content) = NULL; 2638b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2648b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod const char *extension = out_opts->output_format; 26552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (!extension) { 26652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod#if HAVE_ISATTY 26752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (isatty (fileno (out_opts->get_file_handle ()))) 26852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod extension = "ansi"; 26952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod else 27052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod#endif 27152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod extension = "png"; 27252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod } 2738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (0) 2748b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod ; 27552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod else if (0 == strcasecmp (extension, "ansi")) 27652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod constructor2 = _cairo_ansi_surface_create_for_stream; 2778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_PNG_FUNCTIONS 2788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "png")) 2798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor2 = _cairo_png_surface_create_for_stream; 2808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 2818b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_SVG_SURFACE 2828b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "svg")) 2838b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = cairo_svg_surface_create_for_stream; 2848b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 2858b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_PDF_SURFACE 2868b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "pdf")) 2878b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = cairo_pdf_surface_create_for_stream; 2888b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 2898b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_PS_SURFACE 2908b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "ps")) 2918b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = cairo_ps_surface_create_for_stream; 2928b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef HAS_EPS 2938b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "eps")) 2948b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = _cairo_eps_surface_create_for_stream; 2958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 2968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 2978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int fr, fg, fb, fa, br, bg, bb, ba; 3008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod br = bg = bb = ba = 255; 3018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod sscanf (view_opts->back + (*view_opts->back=='#'), "%2x%2x%2x%2x", &br, &bg, &bb, &ba); 3028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fr = fg = fb = 0; fa = 255; 3038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod sscanf (view_opts->fore + (*view_opts->fore=='#'), "%2x%2x%2x%2x", &fr, &fg, &fb, &fa); 3048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_content_t content; 3068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (!view_opts->annotate && ba == 255 && br == bg && bg == bb && fr == fg && fg == fb) 3078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = CAIRO_CONTENT_ALPHA; 3088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (ba == 255) 3098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = CAIRO_CONTENT_COLOR; 3108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else 3118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = CAIRO_CONTENT_COLOR_ALPHA; 3128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 3148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod FILE *f = out_opts->get_file_handle (); 3158b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (constructor) 3168b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = constructor (stdio_write_func, f, w, h); 3178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (constructor2) 3188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = constructor2 (stdio_write_func, f, w, h, content); 3198b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else 3208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fail (FALSE, "Unknown output format `%s'", extension); 3218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_t *cr = cairo_create (surface); 3238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = cairo_surface_get_content (surface); 3248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod switch (content) { 3268b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_ALPHA: 3278b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); 3288b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, 1., 1., 1., br / 255.); 3298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_paint (cr); 3308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, 1., 1., 1., 3318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (fr / 255.) * (fa / 255.) + (br / 255) * (1 - (fa / 255.))); 3328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 3338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod default: 3348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR: 3358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR_ALPHA: 3368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); 3378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, br / 255., bg / 255., bb / 255., ba / 255.); 3388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_paint (cr); 3398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_operator (cr, CAIRO_OPERATOR_OVER); 3408b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, fr / 255., fg / 255., fb / 255., fa / 255.); 3418b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 3428b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 3438b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3448b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_destroy (surface); 3458b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return cr; 3468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 3478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodvoid 3498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_destroy_context (cairo_t *cr) 3508b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 3518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod finalize_closure_t *closure = (finalize_closure_t *) 3528b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_get_user_data (cairo_get_target (cr), 3538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &finalize_closure_key); 3548b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (closure) 3558b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod closure->callback (closure); 3568b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3578b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_t status = cairo_status (cr); 3588b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 3598b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fail (FALSE, "Failed: %s", 3608b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_to_string (status)); 3618b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_destroy (cr); 3628b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 3638b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3648b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3658b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodvoid 3668b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_line_from_buffer (helper_cairo_line_t *l, 3678b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_buffer_t *buffer, 3688b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod const char *text, 3698b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int text_len, 37095cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod double scale, 37195cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod hb_bool_t utf8_clusters) 3728b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 3738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod memset (l, 0, sizeof (*l)); 3748b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3758b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->num_glyphs = hb_buffer_get_length (buffer); 3768b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_glyph_info_t *hb_glyph = hb_buffer_get_glyph_infos (buffer, NULL); 3778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_glyph_position_t *hb_position = hb_buffer_get_glyph_positions (buffer, NULL); 3788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs = cairo_glyph_allocate (l->num_glyphs + 1); 3798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (text) { 3818b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->utf8 = g_strndup (text, text_len); 3828b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->utf8_len = text_len; 3838b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->num_clusters = l->num_glyphs ? 1 : 0; 3848b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (unsigned int i = 1; i < l->num_glyphs; i++) 3858b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (hb_glyph[i].cluster != hb_glyph[i-1].cluster) 3868b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->num_clusters++; 3878b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters = cairo_text_cluster_allocate (l->num_clusters); 3888b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 3898b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3908b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if ((l->num_glyphs && !l->glyphs) || 3918b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (l->utf8_len && !l->utf8) || 3928b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (l->num_clusters && !l->clusters)) 3938b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod { 3948b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->finish (); 3958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return; 3968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 3978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_position_t x = 0, y = 0; 3998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod int i; 4008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (i = 0; i < (int) l->num_glyphs; i++) 4018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod { 4028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].index = hb_glyph[i].codepoint; 4038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].x = ( hb_position->x_offset + x) * scale; 4048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].y = (-hb_position->y_offset + y) * scale; 4058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod x += hb_position->x_advance; 4068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod y += -hb_position->y_advance; 4078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_position++; 4098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].index = -1; 4118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].x = x * scale; 4128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].y = y * scale; 4138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (l->num_clusters) { 4158b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod memset ((void *) l->clusters, 0, l->num_clusters * sizeof (l->clusters[0])); 416088c1e27c0fc0cdef999cf1f567e4d5eb2cfb2e4Behdad Esfahbod hb_bool_t backward = HB_DIRECTION_IS_BACKWARD (hb_buffer_get_direction (buffer)); 4178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->cluster_flags = backward ? CAIRO_TEXT_CLUSTER_FLAG_BACKWARD : (cairo_text_cluster_flags_t) 0; 4188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int cluster = 0; 41995cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod const char *start = l->utf8, *end = start; 4208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters[cluster].num_glyphs++; 4218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (backward) { 4228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (i = l->num_glyphs - 2; i >= 0; i--) { 4238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (hb_glyph[i].cluster != hb_glyph[i+1].cluster) { 4248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod g_assert (hb_glyph[i].cluster > hb_glyph[i+1].cluster); 42595cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod if (utf8_clusters) 42695cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = start + hb_glyph[i].cluster - hb_glyph[i+1].cluster; 42795cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod else 42895cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = g_utf8_offset_to_pointer (start, hb_glyph[i].cluster - hb_glyph[i+1].cluster); 42995cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = end - start; 43095cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod start = end; 4318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cluster++; 4328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters[cluster].num_glyphs++; 4348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 43595cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = l->utf8 + text_len - start; 4368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } else { 4378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (i = 1; i < (int) l->num_glyphs; i++) { 4388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (hb_glyph[i].cluster != hb_glyph[i-1].cluster) { 4398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod g_assert (hb_glyph[i].cluster > hb_glyph[i-1].cluster); 44095cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod if (utf8_clusters) 44195cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = start + hb_glyph[i].cluster - hb_glyph[i-1].cluster; 44295cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod else 44395cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = g_utf8_offset_to_pointer (start, hb_glyph[i].cluster - hb_glyph[i-1].cluster); 44495cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = end - start; 44595cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod start = end; 4468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cluster++; 4478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters[cluster].num_glyphs++; 4498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 45095cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = l->utf8 + text_len - start; 4518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4528b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 454