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 #include "options.hh" 28 29 #include <cairo.h> 30 31 #ifndef HELPER_CAIRO_HH 32 #define HELPER_CAIRO_HH 33 34 35 cairo_scaled_font_t * 36 helper_cairo_create_scaled_font (const font_options_t *font_opts, 37 double font_size); 38 39 extern const char helper_cairo_supported_formats[]; 40 41 cairo_t * 42 helper_cairo_create_context (double w, double h, 43 view_options_t *view_opts, 44 output_options_t *out_opts); 45 46 void 47 helper_cairo_destroy_context (cairo_t *cr); 48 49 50 struct helper_cairo_line_t { 51 cairo_glyph_t *glyphs; 52 unsigned int num_glyphs; 53 char *utf8; 54 unsigned int utf8_len; 55 cairo_text_cluster_t *clusters; 56 unsigned int num_clusters; 57 cairo_text_cluster_flags_t cluster_flags; 58 finishhelper_cairo_line_t59 void finish (void) { 60 if (glyphs) 61 cairo_glyph_free (glyphs); 62 if (clusters) 63 cairo_text_cluster_free (clusters); 64 if (utf8) 65 g_free (utf8); 66 } 67 get_advancehelper_cairo_line_t68 void get_advance (double *x_advance, double *y_advance) { 69 *x_advance = glyphs[num_glyphs].x; 70 *y_advance = glyphs[num_glyphs].y; 71 } 72 }; 73 74 void 75 helper_cairo_line_from_buffer (helper_cairo_line_t *l, 76 hb_buffer_t *buffer, 77 const char *text, 78 unsigned int text_len, 79 double scale, 80 hb_bool_t utf8_clusters); 81 82 #endif 83