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#ifndef _FONT_H
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#define _FONT_H
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/* width and height of a glyph contain the kering advance
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* (u,v)
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* +-------------*---+ -
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* | ^ | | ^
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* | |oy | | |
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* | v | | |
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* | .ii. | | |
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* | @@@@@@. |<->| |
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* | V@Mio@@o |adv| |
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* | :i. V@V | | |
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* | :oM@@M | | |
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* | :@@@MM@M | | |
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* | @@o o@M | | |
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* |<->:@@. M@M | | |
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* |ox @@@o@@@@ | | |
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* | :M@@V:@@.| | v
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* +-------------*---+ -
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* |<------------->|
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* w
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*/
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// TODO: the advance isn't unique for every pair of characters
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struct font_glyph {
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unsigned int codepoint;
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unsigned int u, v, w, h, a, x, y;
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};
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struct font_atlas {
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unsigned int width, height;
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unsigned char *atlas;
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unsigned int glyph_max_w, glyph_max_h;
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int size;
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int file_size;
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char *file;
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void *priv;
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};
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struct font_atlas * font_init(void);
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int font_load(struct font_atlas *atlas, const char *path, int size);
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int font_free(struct font_atlas *atlas);
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const struct font_glyph * font_get_glyph_texture(struct font_atlas *atlas, unsigned int code, int *updated);
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void font_dump(const struct font_atlas *atlas, const char *path);
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#endif
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