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); 530594a2448440208efa0acac9a5d8d52d43108289Behdad 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 638656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod 648656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbodstatic FT_Library ft_library; 658656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod 668656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbodstatic inline 678656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbodvoid free_ft_library (void) 688656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod{ 698656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod FT_Done_FreeType (ft_library); 708656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod} 718656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod 728b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodcairo_scaled_font_t * 738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_create_scaled_font (const font_options_t *font_opts, 748b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double font_size) 758b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 768b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_font_t *font = hb_font_reference (font_opts->get_font ()); 778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_face_t *cairo_face; 798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod FT_Face ft_face = hb_ft_font_get_face (font); 808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (!ft_face) 818656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod { 828656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod if (!ft_library) 838656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod { 848656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod FT_Init_FreeType (&ft_library); 858656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod#ifdef HAVE_ATEXIT 868656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod atexit (free_ft_library); 878656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod#endif 888656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod } 898656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod FT_New_Face (ft_library, 908656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod font_opts->font_file, 918656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod font_opts->face_index, 928656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod &ft_face); 938656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod } 948656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod if (!ft_face) 958656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod { 968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod /* This allows us to get some boxes at least... */ 978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_face = cairo_toy_font_face_create ("@cairo:sans", 988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod CAIRO_FONT_SLANT_NORMAL, 998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod CAIRO_FONT_WEIGHT_NORMAL); 1008656408572c2685f278a3b742ee69c767c29788cBehdad Esfahbod } 1018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else 1028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0); 1038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_matrix_t ctm, font_matrix; 1048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_t *font_options; 1058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_matrix_init_identity (&ctm); 1078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_matrix_init_scale (&font_matrix, 1088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod font_size, font_size); 1098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod font_options = cairo_font_options_create (); 1108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_set_hint_style (font_options, CAIRO_HINT_STYLE_NONE); 1118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF); 1128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_scaled_font_t *scaled_font = cairo_scaled_font_create (cairo_face, 1148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &font_matrix, 1158b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &ctm, 1168b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod font_options); 1178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_options_destroy (font_options); 1198b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_font_face_destroy (cairo_face); 1208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod static cairo_user_data_key_t key; 1228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (cairo_scaled_font_set_user_data (scaled_font, 1238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &key, 1248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (void *) font, 1258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (cairo_destroy_func_t) hb_font_destroy)) 1268b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_font_destroy (font); 1278b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1288b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return scaled_font; 1298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 1308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstruct finalize_closure_t { 1338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void (*callback)(finalize_closure_t *); 1348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 1358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_write_func_t write_func; 1368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure; 1378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod}; 1388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_user_data_key_t finalize_closure_key; 1398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 14052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 14152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbodstatic void 14252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbodfinalize_ansi (finalize_closure_t *closure) 14352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod{ 14452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_t status; 14552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod status = helper_cairo_surface_write_to_ansi_stream (closure->surface, 14652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod closure->write_func, 14752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod closure->closure); 14852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 1490594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod fail (false, "Failed to write output: %s", 15052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_to_string (status)); 15152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod} 15252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 15352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbodstatic cairo_surface_t * 15452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod_cairo_ansi_surface_create_for_stream (cairo_write_func_t write_func, 15552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod void *closure, 15652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod double width, 15752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod double height, 15852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_content_t content) 15952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod{ 16052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_surface_t *surface; 16152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod int w = ceil (width); 16252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod int h = ceil (height); 16352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 16452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod switch (content) { 16552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod case CAIRO_CONTENT_ALPHA: 16652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_A8, w, h); 16752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod break; 16852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod default: 16952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod case CAIRO_CONTENT_COLOR: 17052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, w, h); 17152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod break; 17252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod case CAIRO_CONTENT_COLOR_ALPHA: 17352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h); 17452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod break; 17552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod } 17652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_t status = cairo_surface_status (surface); 17752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 1780594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod fail (false, "Failed to create cairo surface: %s", 17952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod cairo_status_to_string (status)); 18052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 18152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod finalize_closure_t *ansi_closure = g_new0 (finalize_closure_t, 1); 18252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->callback = finalize_ansi; 18352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->surface = surface; 18452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->write_func = write_func; 18552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod ansi_closure->closure = closure; 18652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 18752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (cairo_surface_set_user_data (surface, 18852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod &finalize_closure_key, 18952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod (void *) ansi_closure, 19052e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod (cairo_destroy_func_t) g_free)) 19152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod g_free ((void *) closure); 19252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 19352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod return surface; 19452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod} 19552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 19652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod 1978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#ifdef CAIRO_HAS_PNG_FUNCTIONS 1988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 1998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic void 2008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodfinalize_png (finalize_closure_t *closure) 2018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 2028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_t status; 2038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod status = cairo_surface_write_to_png_stream (closure->surface, 2048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod closure->write_func, 2058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod closure->closure); 2068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 2070594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod fail (false, "Failed to write output: %s", 2088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_to_string (status)); 2098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 2108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_surface_t * 2128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod_cairo_png_surface_create_for_stream (cairo_write_func_t write_func, 2138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 2148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 2158b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height, 2168b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_content_t content) 2178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 2188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 2198b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod int w = ceil (width); 2208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod int h = ceil (height); 2218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod switch (content) { 2238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_ALPHA: 2248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_A8, w, h); 2258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 2268b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod default: 2278b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR: 2288b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, w, h); 2298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 2308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR_ALPHA: 2318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h); 2328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 2338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 2348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_t status = cairo_surface_status (surface); 2358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 2360594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod fail (false, "Failed to create cairo surface: %s", 2378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_to_string (status)); 2388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod finalize_closure_t *png_closure = g_new0 (finalize_closure_t, 1); 2408b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->callback = finalize_png; 2418b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->surface = surface; 2428b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->write_func = write_func; 2438b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod png_closure->closure = closure; 2448b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2458b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (cairo_surface_set_user_data (surface, 2468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &finalize_closure_key, 2478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (void *) png_closure, 2488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (cairo_destroy_func_t) g_free)) 2498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod g_free ((void *) closure); 2508b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return surface; 2528b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 2538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2548b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod#endif 2558b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2568b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstatic cairo_status_t 2578b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodstdio_write_func (void *closure, 2588b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod const unsigned char *data, 2598b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int size) 2608b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 2618b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod FILE *fp = (FILE *) closure; 2628b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2638b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod while (size) { 2648b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod size_t ret = fwrite (data, 1, size, fp); 2658b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod size -= ret; 2668b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod data += ret; 2678b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (size && ferror (fp)) 2680594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod fail (false, "Failed to write output: %s", strerror (errno)); 2698b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 2708b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 2718b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return CAIRO_STATUS_SUCCESS; 2728b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 2738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 274ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbodconst char *helper_cairo_supported_formats[] = 275ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod{ 276ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod "ansi", 277f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #ifdef CAIRO_HAS_PNG_FUNCTIONS 278ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod "png", 279f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #endif 280f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #ifdef CAIRO_HAS_SVG_SURFACE 281ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod "svg", 282f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #endif 283f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #ifdef CAIRO_HAS_PDF_SURFACE 284ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod "pdf", 285f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #endif 286f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #ifdef CAIRO_HAS_PS_SURFACE 287ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod "ps", 288f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #ifdef HAS_EPS 289ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod "eps", 290f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #endif 291f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod #endif 292ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod NULL 293ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod}; 294f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod 2958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodcairo_t * 2968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_create_context (double w, double h, 2978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod view_options_t *view_opts, 2988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod output_options_t *out_opts) 2998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 3008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *(*constructor) (cairo_write_func_t write_func, 3018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 3028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 3038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height) = NULL; 3048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *(*constructor2) (cairo_write_func_t write_func, 3058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod void *closure, 3068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double width, 3078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod double height, 3088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_content_t content) = NULL; 3098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod const char *extension = out_opts->output_format; 31152e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (!extension) { 31252e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod#if HAVE_ISATTY 31352e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod if (isatty (fileno (out_opts->get_file_handle ()))) 31452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod extension = "ansi"; 31552e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod else 31652e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod#endif 317f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod { 318f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod#ifdef CAIRO_HAS_PNG_FUNCTIONS 31952e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod extension = "png"; 320f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod#else 321f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod extension = "ansi"; 322f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod#endif 323f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod } 32452e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod } 3258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (0) 3268b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod ; 32752e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod else if (0 == strcasecmp (extension, "ansi")) 32852e7b1424a3613122e9ca30879298df42733acdaBehdad Esfahbod constructor2 = _cairo_ansi_surface_create_for_stream; 3298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_PNG_FUNCTIONS 3308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "png")) 3318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor2 = _cairo_png_surface_create_for_stream; 3328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 3338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_SVG_SURFACE 3348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "svg")) 3358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = cairo_svg_surface_create_for_stream; 3368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 3378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_PDF_SURFACE 3388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "pdf")) 3398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = cairo_pdf_surface_create_for_stream; 3408b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 3418b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef CAIRO_HAS_PS_SURFACE 3428b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "ps")) 3438b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = cairo_ps_surface_create_for_stream; 3448b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #ifdef HAS_EPS 3458b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (0 == strcasecmp (extension, "eps")) 3468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod constructor = _cairo_eps_surface_create_for_stream; 3478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 3488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod #endif 3498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3508b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int fr, fg, fb, fa, br, bg, bb, ba; 3528f8956a55fff95e5ad529d2f124c9528d1f4f81dBehdad Esfahbod br = bg = bb = 0; ba = 255; 3538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod sscanf (view_opts->back + (*view_opts->back=='#'), "%2x%2x%2x%2x", &br, &bg, &bb, &ba); 3548b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod fr = fg = fb = 0; fa = 255; 3558b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod sscanf (view_opts->fore + (*view_opts->fore=='#'), "%2x%2x%2x%2x", &fr, &fg, &fb, &fa); 3568b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3578b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_content_t content; 3588b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (!view_opts->annotate && ba == 255 && br == bg && bg == bb && fr == fg && fg == fb) 3598b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = CAIRO_CONTENT_ALPHA; 3608b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (ba == 255) 3618b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = CAIRO_CONTENT_COLOR; 3628b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else 3638b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = CAIRO_CONTENT_COLOR_ALPHA; 3648b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3658b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_t *surface; 3668b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod FILE *f = out_opts->get_file_handle (); 3678b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (constructor) 3688b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = constructor (stdio_write_func, f, w, h); 3698b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else if (constructor2) 3708b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod surface = constructor2 (stdio_write_func, f, w, h, content); 3718b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod else 372f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod fail (false, "Unknown output format `%s'; supported formats are: %s%s", 373ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod extension, 374ea5e8a02eb83ad19f3009b0008893f77ce113118Behdad Esfahbod g_strjoinv ("/", const_cast<char**> (helper_cairo_supported_formats)), 375f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod out_opts->explicit_output_format ? "" : 376f95a87b7b813f588c7910ad4785ee68bb452e864Behdad Esfahbod "\nTry setting format using --output-format"); 3778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_t *cr = cairo_create (surface); 3798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod content = cairo_surface_get_content (surface); 3808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 3818b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod switch (content) { 3828b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_ALPHA: 3838b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); 3848b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, 1., 1., 1., br / 255.); 3858b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_paint (cr); 3868b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, 1., 1., 1., 3878b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (fr / 255.) * (fa / 255.) + (br / 255) * (1 - (fa / 255.))); 3888b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 3898b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod default: 3908b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR: 3918b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod case CAIRO_CONTENT_COLOR_ALPHA: 3928b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); 3938b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, br / 255., bg / 255., bb / 255., ba / 255.); 3948b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_paint (cr); 3958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_operator (cr, CAIRO_OPERATOR_OVER); 3968b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_set_source_rgba (cr, fr / 255., fg / 255., fb / 255., fa / 255.); 3978b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod break; 3988b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 3998b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4008b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_destroy (surface); 4018b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return cr; 4028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 4038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodvoid 4058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_destroy_context (cairo_t *cr) 4068b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 4078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod finalize_closure_t *closure = (finalize_closure_t *) 4088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_surface_get_user_data (cairo_get_target (cr), 4098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod &finalize_closure_key); 4108b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (closure) 4118b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod closure->callback (closure); 4128b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4138b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_t status = cairo_status (cr); 4148b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (status != CAIRO_STATUS_SUCCESS) 4150594a2448440208efa0acac9a5d8d52d43108289Behdad Esfahbod fail (false, "Failed: %s", 4168b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_status_to_string (status)); 4178b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cairo_destroy (cr); 4188b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 4198b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4208b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4218b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodvoid 4228b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbodhelper_cairo_line_from_buffer (helper_cairo_line_t *l, 4238b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_buffer_t *buffer, 4248b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod const char *text, 4258b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int text_len, 42695cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod double scale, 42795cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod hb_bool_t utf8_clusters) 4288b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod{ 4298b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod memset (l, 0, sizeof (*l)); 4308b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4318b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->num_glyphs = hb_buffer_get_length (buffer); 4328b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_glyph_info_t *hb_glyph = hb_buffer_get_glyph_infos (buffer, NULL); 4338b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_glyph_position_t *hb_position = hb_buffer_get_glyph_positions (buffer, NULL); 4348b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs = cairo_glyph_allocate (l->num_glyphs + 1); 4358b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4368b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (text) { 4378b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->utf8 = g_strndup (text, text_len); 4388b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->utf8_len = text_len; 4398b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->num_clusters = l->num_glyphs ? 1 : 0; 4408b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (unsigned int i = 1; i < l->num_glyphs; i++) 4418b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (hb_glyph[i].cluster != hb_glyph[i-1].cluster) 4428b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->num_clusters++; 4438b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters = cairo_text_cluster_allocate (l->num_clusters); 4448b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4458b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4468b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if ((l->num_glyphs && !l->glyphs) || 4478b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (l->utf8_len && !l->utf8) || 4488b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod (l->num_clusters && !l->clusters)) 4498b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod { 4508b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->finish (); 4518b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod return; 4528b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4538b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4548b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_position_t x = 0, y = 0; 4558b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod int i; 4568b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (i = 0; i < (int) l->num_glyphs; i++) 4578b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod { 4588b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].index = hb_glyph[i].codepoint; 4598b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].x = ( hb_position->x_offset + x) * scale; 4608b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].y = (-hb_position->y_offset + y) * scale; 4618b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod x += hb_position->x_advance; 4628b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod y += -hb_position->y_advance; 4638b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4648b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod hb_position++; 4658b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4668b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].index = -1; 4678b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].x = x * scale; 4688b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->glyphs[i].y = y * scale; 4698b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod 4708b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (l->num_clusters) { 4718b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod memset ((void *) l->clusters, 0, l->num_clusters * sizeof (l->clusters[0])); 472088c1e27c0fc0cdef999cf1f567e4d5eb2cfb2e4Behdad Esfahbod hb_bool_t backward = HB_DIRECTION_IS_BACKWARD (hb_buffer_get_direction (buffer)); 4738b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->cluster_flags = backward ? CAIRO_TEXT_CLUSTER_FLAG_BACKWARD : (cairo_text_cluster_flags_t) 0; 4748b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod unsigned int cluster = 0; 475a18280a8ce9128fc9d75f8a367ae8ce0886a9599Behdad Esfahbod const char *start = l->utf8, *end; 4768b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters[cluster].num_glyphs++; 4778b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (backward) { 4788b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (i = l->num_glyphs - 2; i >= 0; i--) { 4798b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (hb_glyph[i].cluster != hb_glyph[i+1].cluster) { 4808b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod g_assert (hb_glyph[i].cluster > hb_glyph[i+1].cluster); 48195cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod if (utf8_clusters) 48295cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = start + hb_glyph[i].cluster - hb_glyph[i+1].cluster; 48395cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod else 48495cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = g_utf8_offset_to_pointer (start, hb_glyph[i].cluster - hb_glyph[i+1].cluster); 48595cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = end - start; 48695cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod start = end; 4878b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cluster++; 4888b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 4898b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters[cluster].num_glyphs++; 4908b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 49195cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = l->utf8 + text_len - start; 4928b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } else { 4938b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod for (i = 1; i < (int) l->num_glyphs; i++) { 4948b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod if (hb_glyph[i].cluster != hb_glyph[i-1].cluster) { 4958b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod g_assert (hb_glyph[i].cluster > hb_glyph[i-1].cluster); 49695cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod if (utf8_clusters) 49795cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = start + hb_glyph[i].cluster - hb_glyph[i-1].cluster; 49895cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod else 49995cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod end = g_utf8_offset_to_pointer (start, hb_glyph[i].cluster - hb_glyph[i-1].cluster); 50095cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = end - start; 50195cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod start = end; 5028b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod cluster++; 5038b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 5048b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod l->clusters[cluster].num_glyphs++; 5058b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 50695cefdf96efe43a44133aa8a186155cf4e63e2b7Behdad Esfahbod l->clusters[cluster].num_bytes = l->utf8 + text_len - start; 5078b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 5088b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod } 5098b8b19056decaf09e4e0ccd9412ee1aeb30f4de7Behdad Esfahbod} 510