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Implement unicode character replacements

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Useful to draw whitespaces with alternate characters and colors
without slowing down the text rendering.

A new API is implemented. A renderer.replacements object can be created
to list the replacements.

In turns the function renderer.draw_text and draw_text_subpixel now accept
two optional arguments for replacements.
This commit is contained in:
Francesco Abbate
2021-04-01 18:05:59 +02:00
parent ed6ba64542
commit 3b040aabc7
14 changed files with 212 additions and 33 deletions
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src/rencache.h
+1 -1
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@@ -8,7 +8,7 @@ void rencache_show_debug(bool enable);
void rencache_free_font(RenFont *font);
void rencache_set_clip_rect(RenRect rect);
void rencache_draw_rect(RenRect rect, RenColor color);
int rencache_draw_text(RenFont *font, const char *text, int x, int y, RenColor color, bool draw_subpixel);
int rencache_draw_text(RenFont *font, const char *text, int x, int y, RenColor color, bool draw_subpixel, CPReplaceTable *replacements, RenColor replace_color);
void rencache_invalidate(void);
void rencache_begin_frame(void);
void rencache_end_frame(void);