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(Font) Some simplifications

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This commit is contained in:
libretroadmin 2023-05-07 18:54:39 +02:00
parent 1b3f9b84d9
commit a0292c1db4
2 changed files with 12 additions and 25 deletions
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29
gfx/font_driver.c
View File

@ -276,7 +276,6 @@ static bool gdi_font_init_first(
#endif
#ifdef HAVE_VULKAN
static bool vulkan_font_init_first(
const void **font_driver, void **font_handle,
void *video_data, const char *font_path,
@ -1018,70 +1017,58 @@ int font_driver_get_message_width(void *font_data,
return -1;
}
int font_driver_get_line_height(void *font_data, float scale)
int font_driver_get_line_height(font_data_t *font, float scale)
{
struct font_line_metrics *metrics = NULL;
font_data_t *font = (font_data_t*)(font_data ? font_data : video_font_driver);
/* First try the line metrics implementation */
if (font && font->renderer && font->renderer->get_line_metrics)
if ((font->renderer->get_line_metrics(
font->renderer_data, &metrics)))
return (int)roundf(metrics->height * scale);
/* Else return an approximation
* (uses a fudge of standard font metrics - mostly garbage...)
* > font_size = (width of 'a') / 0.6
* > line_height = font_size * 1.7f */
return (int)roundf(1.7f * (float)font_driver_get_message_width(font_data, "a", 1, scale) / 0.6f);
return (int)roundf(1.7f * (float)font_driver_get_message_width(font, "a", 1, scale) / 0.6f);
}
int font_driver_get_line_ascender(void *font_data, float scale)
int font_driver_get_line_ascender(font_data_t *font, float scale)
{
struct font_line_metrics *metrics = NULL;
font_data_t *font = (font_data_t*)(font_data ? font_data : video_font_driver);
/* First try the line metrics implementation */
if (font && font->renderer && font->renderer->get_line_metrics)
if ((font->renderer->get_line_metrics(font->renderer_data, &metrics)))
return (int)roundf(metrics->ascender * scale);
/* Else return an approximation
* (uses a fudge of standard font metrics - mostly garbage...)
* > font_size = (width of 'a') / 0.6
* > ascender = 1.58 * font_size * 0.75 */
return (int)roundf(1.58f * 0.75f * (float)font_driver_get_message_width(font_data, "a", 1, scale) / 0.6f);
return (int)roundf(1.58f * 0.75f * (float)font_driver_get_message_width(font, "a", 1, scale) / 0.6f);
}
int font_driver_get_line_descender(void *font_data, float scale)
int font_driver_get_line_descender(font_data_t *font, float scale)
{
struct font_line_metrics *metrics = NULL;
font_data_t *font = (font_data_t*)(font_data ? font_data : video_font_driver);
/* First try the line metrics implementation */
if (font && font->renderer && font->renderer->get_line_metrics)
if ((font->renderer->get_line_metrics(font->renderer_data, &metrics)))
return (int)roundf(metrics->descender * scale);
/* Else return an approximation
* (uses a fudge of standard font metrics - mostly garbage...)
* > font_size = (width of 'a') / 0.6
* > descender = 1.58 * font_size * 0.25 */
return (int)roundf(1.58f * 0.25f * (float)font_driver_get_message_width(font_data, "a", 1, scale) / 0.6f);
return (int)roundf(1.58f * 0.25f * (float)font_driver_get_message_width(font, "a", 1, scale) / 0.6f);
}
int font_driver_get_line_centre_offset(void *font_data, float scale)
int font_driver_get_line_centre_offset(font_data_t *font, float scale)
{
struct font_line_metrics *metrics = NULL;
font_data_t *font = (font_data_t*)(font_data ? font_data : video_font_driver);
/* First try the line metrics implementation */
if (font && font->renderer && font->renderer->get_line_metrics)
if ((font->renderer->get_line_metrics(font->renderer_data, &metrics)))
return (int)roundf((metrics->ascender - metrics->descender) * 0.5f * scale);
/* Else return an approximation... */
return (int)roundf((1.58f * 0.5f * (float)font_driver_get_message_width(font_data, "a", 1, scale) / 0.6f) / 2.0f);
return (int)roundf((1.58f * 0.5f * (float)font_driver_get_message_width(font, "a", 1, scale) / 0.6f) / 2.0f);
}
void font_driver_free(void *font_data)

8
gfx/font_driver.h
View File

@ -169,10 +169,10 @@ void font_driver_init_osd(
void font_driver_free_osd(void);
int font_driver_get_line_height(void *font_data, float scale);
int font_driver_get_line_ascender(void *font_data, float scale);
int font_driver_get_line_descender(void *font_data, float scale);
int font_driver_get_line_centre_offset(void *font_data, float scale);
int font_driver_get_line_height(font_data_t *font, float scale);
int font_driver_get_line_ascender(font_data_t *font, float scale);
int font_driver_get_line_descender(font_data_t *font, float scale);
int font_driver_get_line_centre_offset(font_data_t *font, float scale);
extern font_renderer_t gl2_raster_font;
extern font_renderer_t gl3_raster_font;