4coder/4ed_font_interface.h

85 lines
1.6 KiB
C

/*
* Mr. 4th Dimention - Allen Webster
*
* 11.03.2017
*
* Font system interface.
*
*/
// TOP
#if !defined(FCODER_FONT_INTERFACE_H)
#define FCODER_FONT_INTERFACE_H
typedef i32 Texture_Kind;
enum{
TextureKind_Error,
TextureKind_Mono,
};
typedef u32 Graphics_Get_Texture_Function(Vec3_i32 dim, Texture_Kind texture_kind);
typedef b32 Graphics_Fill_Texture_Function(Texture_Kind texture_kind, u32 texture,
Vec3_i32 p, Vec3_i32 dim, void *data);
////////////////////////////////
struct Glyph_Bounds{
Rect_f32 uv;
f32 w;
Rect_f32 xy_off;
};
struct Codepoint_Index_Map{
b32 has_zero_index;
u16 zero_index;
u16 max_index;
Table_u32_u16 table;
};
struct Face{
Face_Description description;
Face_ID id;
// NOTE(allen): Metrics
f32 height;
f32 ascent;
f32 descent;
f32 line_skip;
f32 max_advance;
f32 underline_yoff1;
f32 underline_yoff2;
f32 space_advance;
f32 digit_advance;
f32 hex_advance;
f32 byte_advance;
f32 byte_sub_advances[3];
f32 typical_lowercase_advance;
f32 typical_uppercase_advance;
f32 typical_advance;
// NOTE(allen): Glyph data
Codepoint_Index_Map codepoint_to_index_map;
u16 index_count;
Glyph_Bounds *bounds;
f32 *advance;
Glyph_Bounds white;
Texture_Kind texture_kind;
u32 texture;
Vec3_f32 texture_dim;
};
////////////////////////////////
// NOTE(allen): Platform layer calls - implemented in a "font provider"
typedef Face *Font_Make_Face_Function(Arena *arena, Face_Description *description);
#endif
// BOTTOM