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Implement get_line_height function for OSX/iOS font renderer

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This commit is contained in:
Twinaphex 2016-10-24 08:26:55 +02:00
parent ef67ba52b3
commit df646ae32d
1 changed files with 13 additions and 1 deletions
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14
gfx/drivers_font_renderer/coretext.c
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@ -42,6 +42,7 @@ typedef struct coretext_renderer
{
struct font_atlas atlas;
struct font_glyph glyphs[CT_ATLAS_SIZE];
CGFloat metrics_height;
} ct_font_renderer_t;
static struct font_atlas *font_renderer_ct_get_atlas(void *data)
@ -148,6 +149,9 @@ static bool font_renderer_create_atlas(CTFontRef face, ct_font_renderer_t *handl
handle->atlas.width = max_width * CT_ATLAS_COLS;
handle->atlas.height = max_height * CT_ATLAS_ROWS;
handle->metrics_height += CTFontGetAscent(face);
handle->metrics_height += CTFontGetDescent(face);
handle->metrics_height += CTFontGetLeading(face);
handle->atlas.buffer = (uint8_t*)
calloc(handle->atlas.width * handle->atlas.height, 1);
@ -306,6 +310,14 @@ static const char *font_renderer_ct_get_default_font(void)
return default_font;
}
static int font_renderer_ct_get_line_height(void *data)
{
ct_font_renderer_t *handle = (ct_font_renderer_t*)data;
if (!handle)
return 0;
return handle->metrics_height;
}
font_renderer_driver_t coretext_font_renderer = {
font_renderer_ct_init,
font_renderer_ct_get_atlas,
@ -313,5 +325,5 @@ font_renderer_driver_t coretext_font_renderer = {
font_renderer_ct_free,
font_renderer_ct_get_default_font,
"coretext",
NULL, /*get_line_height*/
font_renderer_ct_get_line_height
};