1 /* 2 * Copyright 2011 Google, Inc. 3 * 4 * This is part of HarfBuzz, a text shaping library. 5 * 6 * Permission is hereby granted, without written agreement and without 7 * license or royalty fees, to use, copy, modify, and distribute this 8 * software and its documentation for any purpose, provided that the 9 * above copyright notice and the following two paragraphs appear in 10 * all copies of this software. 11 * 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16 * DAMAGE. 17 * 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23 * 24 * Google Author(s): Behdad Esfahbod 25 */ 26 27 #ifndef HELPER_CAIRO_HH 28 #define HELPER_CAIRO_HH 29 30 #include "hb-private.hh" 31 #include "options.hh" 32 33 #include <cairo.h> 34 35 36 cairo_scaled_font_t * 37 helper_cairo_create_scaled_font (const font_options_t *font_opts); 38 39 bool 40 helper_cairo_scaled_font_has_color (cairo_scaled_font_t *scaled_font); 41 42 extern const char *helper_cairo_supported_formats[]; 43 44 cairo_t * 45 helper_cairo_create_context (double w, double h, 46 view_options_t *view_opts, 47 output_options_t *out_opts, 48 cairo_content_t content); 49 50 void 51 helper_cairo_destroy_context (cairo_t *cr); 52 53 54 struct helper_cairo_line_t { 55 cairo_glyph_t *glyphs; 56 unsigned int num_glyphs; 57 char *utf8; 58 unsigned int utf8_len; 59 cairo_text_cluster_t *clusters; 60 unsigned int num_clusters; 61 cairo_text_cluster_flags_t cluster_flags; 62 63 void finish (void) { 64 if (glyphs) 65 cairo_glyph_free (glyphs); 66 if (clusters) 67 cairo_text_cluster_free (clusters); 68 if (utf8) 69 g_free (utf8); 70 } 71 72 void get_advance (double *x_advance, double *y_advance) { 73 *x_advance = glyphs[num_glyphs].x; 74 *y_advance = glyphs[num_glyphs].y; 75 } 76 }; 77 78 void 79 helper_cairo_line_from_buffer (helper_cairo_line_t *l, 80 hb_buffer_t *buffer, 81 const char *text, 82 unsigned int text_len, 83 int scale_bits, 84 hb_bool_t utf8_clusters); 85 86 #endif 87
