gl_font.h (1905B)
1 /* 2 * Copyright 2012 Google, Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 * Google Author(s): Behdad Esfahbod 17 */ 18 19 #ifndef GL_FONT_H 20 #define GL_FONT_H 21 22 #include <unordered_map> 23 24 #include "demo-common.h" 25 #include "gl_atlas.h" 26 27 #include <ft2build.h> 28 #include FT_FREETYPE_H 29 30 31 namespace citrun { 32 33 typedef struct { 34 glyphy_extents_t extents; 35 double advance; 36 glyphy_bool_t is_empty; /* has no outline; eg. space; don't draw it */ 37 unsigned int nominal_w; 38 unsigned int nominal_h; 39 unsigned int atlas_x; 40 unsigned int atlas_y; 41 } glyph_info_t; 42 43 class gl_font { 44 FT_Library ft_library; 45 FT_Face face; 46 47 std::unordered_map<unsigned int, glyph_info_t> glyph_cache; 48 49 /* stats */ 50 unsigned int num_glyphs; 51 double sum_error; 52 unsigned int sum_endpoints; 53 double sum_fetch; 54 unsigned int sum_bytes; 55 56 citrun::gl_atlas &atlas; 57 glyphy_arc_accumulator_t *acc; 58 59 void _upload_glyph(unsigned int, glyph_info_t *); 60 void encode_ft_glyph(unsigned int, 61 double, 62 glyphy_rgba_t *, 63 unsigned int, 64 unsigned int *, 65 unsigned int *, 66 unsigned int *, 67 glyphy_extents_t *, 68 double *); 69 public: 70 gl_font(std::string const&, citrun::gl_atlas &); 71 ~gl_font(); 72 73 FT_Face get_face() const; 74 citrun::gl_atlas &get_atlas(); 75 void lookup_glyph(unsigned int, glyph_info_t *); 76 void print_stats(); 77 }; 78 79 } // namespace citrun 80 #endif /* GL_FONT_H */