hb-font-private.h

   1 #ifndef HB_FONT_PRIVATE
   2 #define HB_FONT_PRIVATE
   3 struct hb_font_funcs_t {
   4         atomic_int32_t ref_cnt;
   5         hb_bool_t immutable;
   6
   7         /*Don't access these directly. Call hb_font_get_*() instead. */
   8         struct {
   9                 hb_font_get_glyph_func_t glyph;
  10                 hb_font_get_glyph_h_advance_func_t glyph_h_advance;
  11                 hb_font_get_glyph_v_advance_func_t glyph_v_advance;
  12                 hb_font_get_glyph_h_origin_func_t glyph_h_origin;
  13                 hb_font_get_glyph_v_origin_func_t glyph_v_origin;
  14                 hb_font_get_glyph_h_kerning_func_t glyph_h_kerning;
  15                 hb_font_get_glyph_v_kerning_func_t glyph_v_kerning;
  16                 hb_font_get_glyph_extents_func_t glyph_extents;
  17                 hb_font_get_glyph_contour_point_func_t glyph_contour_point;
  18                 hb_font_get_glyph_name_func_t glyph_name;
  19                 hb_font_get_glyph_from_name_func_t glyph_from_name;
  20         } get;
  21
  22         struct {
  23                 void *glyph;
  24                 void *glyph_h_advance;
  25                 void *glyph_v_advance;
  26                 void *glyph_h_origin;
  27                 void *glyph_v_origin;
  28                 void *glyph_h_kerning;
  29                 void *glyph_v_kerning;
  30                 void *glyph_extents;
  31                 void *glyph_contour_point;
  32                 void *glyph_name;
  33                 void *glyph_from_name;
  34         } user_data;
  35
  36         struct {
  37                 hb_destroy_func_t glyph;
  38                 hb_destroy_func_t glyph_h_advance;
  39                 hb_destroy_func_t glyph_v_advance;
  40                 hb_destroy_func_t glyph_h_origin;
  41                 hb_destroy_func_t glyph_v_origin;
  42                 hb_destroy_func_t glyph_h_kerning;
  43                 hb_destroy_func_t glyph_v_kerning;
  44                 hb_destroy_func_t glyph_extents;
  45                 hb_destroy_func_t glyph_contour_point;
  46                 hb_destroy_func_t glyph_name;
  47                 hb_destroy_func_t glyph_from_name;
  48         } destroy;
  49 };
  50
  51 struct hb_font_t {
  52         atomic_int32_t ref_cnt;
  53         hb_bool_t immutable;
  54         hb_font_t *parent;
  55         hb_face_t *face;
  56         int x_scale;
  57         int y_scale;
  58         unsigned int x_ppem;
  59         unsigned int y_ppem;
  60         hb_font_funcs_t *klass;
  61         void *user_data;
  62         hb_destroy_func_t destroy;
  63         struct hb_shaper_data_t shaper_data;
  64 };
  65
  66 void hb_font_get_glyph_advance_for_direction(hb_font_t * font,
  67                                              hb_codepoint_t glyph,
  68                                              hb_direction_t direction,
  69                                              hb_position_t * x,
  70                                              hb_position_t * y);
  71 void hb_font_subtract_glyph_origin_for_direction(hb_font_t * font,
  72                                                  hb_codepoint_t glyph,
  73                                                  hb_direction_t direction,
  74                                                  hb_position_t * x,
  75                                                  hb_position_t * y);
  76
  77 #ifdef HAVE_GRAPHITE2
  78 struct hb_graphite2_shaper_font_data_t;
  79 struct hb_graphite2_shaper_font_data_t
  80     *hb_graphite2_shaper_font_data_create(hb_font_t * font);
  81 void hb_graphite2_shaper_font_data_destroy(struct
  82                                            hb_graphite2_shaper_font_data_t
  83                                            *data);
  84 #endif
  85 #ifdef HAVE_OT
  86 struct hb_ot_shaper_font_data_t;
  87 struct hb_ot_shaper_font_data_t *hb_ot_shaper_font_data_create(hb_font_t *
  88                                                                font);
  89 void hb_ot_shaper_font_data_destroy(struct hb_ot_shaper_font_data_t *data);
  90 #endif
  91 struct hb_fallback_shaper_font_data_t;
  92 struct hb_fallback_shaper_font_data_t
  93     *hb_fallback_shaper_font_data_create(hb_font_t * font);
  94 void hb_fallback_shaper_font_data_destroy(struct hb_fallback_shaper_font_data_t
  95                                           *data);
  96 #endif