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Broke out font groupings.

This commit is contained in:
Adam Harrison 2021-10-16 23:49:42 -04:00
parent 7575d2eee6
commit d1fcdacacd
1 changed files with 34 additions and 36 deletions
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70
src/renderer.c
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@ -145,9 +145,9 @@ void font_load_glyphset(RenFont* font, int idx) {
static GlyphSet* font_get_glyphset(RenFont* font, unsigned int codepoint, int subpixel_idx) {
int idx = (codepoint >> 8) % MAX_GLYPHSET;
if (!font->sets[subpixel_idx][idx])
if (!font->sets[font->subpixel ? subpixel_idx : 0][idx])
font_load_glyphset(font, idx);
return font->sets[subpixel_idx][idx];
return font->sets[font->subpixel ? subpixel_idx : 0][idx];
}
RenFont* ren_font_load(const char* path, float size, bool subpixel, unsigned char hinting, unsigned char style) {
@ -203,26 +203,6 @@ int ren_font_group_get_tab_size(RenFont **fonts) {
return font_get_glyphset(fonts[0], '\t', 0)->metrics['\t'].xadvance / fonts[0]->space_advance;
}
float ren_font_group_get_width(RenFont **fonts, const char *text) {
float width = 0;
const char* end = text + strlen(text);
GlyphMetric* metric;
while (text < end) {
unsigned int codepoint;
text = utf8_to_codepoint(text, &codepoint);
for (int i = 0; i < FONT_FALLBACK_MAX && fonts[i]; ++i) {
metric = &font_get_glyphset(fonts[i], codepoint, 0)->metrics[codepoint % 256];
if (metric->loaded || codepoint < 0xFF)
break;
}
if (!metric->loaded && codepoint > 0xFF)
metric = &font_get_glyphset(fonts[0], 0x25A1, 0)->metrics[0x25A1 % 256];
width += metric->xadvance ? metric->xadvance : fonts[0]->space_advance;
}
const int surface_scale = renwin_surface_scale(&window_renderer);
return width / surface_scale;
}
float ren_font_group_get_size(RenFont **fonts) {
return fonts[0]->size;
}
@ -230,6 +210,35 @@ int ren_font_group_get_height(RenFont **fonts) {
return fonts[0]->size + 3;
}
static RenFont* font_group_get_glyph(GlyphSet** set, GlyphMetric** metric, RenFont** fonts, unsigned int codepoint, int bitmap_index) {
for (int i = 0; i < FONT_FALLBACK_MAX && fonts[i]; ++i) {
*set = font_get_glyphset(fonts[i], codepoint, bitmap_index);
*metric = &(*set)->metrics[codepoint % 256];
if ((*metric)->loaded || codepoint < 0xFF)
return fonts[i];
}
if (!(*metric)->loaded && codepoint > 0xFF) {
codepoint = 0x25A1;
*set = font_get_glyphset(fonts[0], codepoint, bitmap_index);
*metric = &(*set)->metrics[codepoint % 256];
}
return fonts[0];
}
float ren_font_group_get_width(RenFont **fonts, const char *text) {
float width = 0;
const char* end = text + strlen(text);
GlyphMetric* metric; GlyphSet* set;
while (text < end) {
unsigned int codepoint;
text = utf8_to_codepoint(text, &codepoint);
font_group_get_glyph(&set, &metric, fonts, codepoint, 0);
width += metric->xadvance ? metric->xadvance : fonts[0]->space_advance;
}
const int surface_scale = renwin_surface_scale(&window_renderer);
return width / surface_scale;
}
float ren_draw_text(RenFont **fonts, const char *text, float x, int y, RenColor color) {
SDL_Surface *surface = renwin_get_surface(&window_renderer);
const RenRect clip = window_renderer.clip;
@ -246,20 +255,9 @@ float ren_draw_text(RenFont **fonts, const char *text, float x, int y, RenColor
unsigned int codepoint, r, g, b;
text = utf8_to_codepoint(text, &codepoint);
GlyphSet* set; GlyphMetric* metric;
for (int i = 0; i < FONT_FALLBACK_MAX && fonts[i]; ++i) {
font = fonts[i];
int bitmap_index = font->subpixel ? (int)(fmod(pen_x, 1.0) * SUBPIXEL_BITMAPS_CACHED) : 0;
set = font_get_glyphset(font, codepoint, bitmap_index + (bitmap_index < 0 ? SUBPIXEL_BITMAPS_CACHED : 0));
metric = &set->metrics[codepoint % 256];
if (metric->loaded || codepoint < 0xFF)
break;
}
if (!metric->loaded && codepoint > 0xFF) {
codepoint = 0x25A1; font = fonts[0];
int bitmap_index = font->subpixel ? (int)(fmod(pen_x, 1.0) * SUBPIXEL_BITMAPS_CACHED) : 0;
set = font_get_glyphset(font, codepoint, bitmap_index + (bitmap_index < 0 ? SUBPIXEL_BITMAPS_CACHED : 0));
metric = &set->metrics[codepoint % 256];
}
int bitmap_index = (int)(fmod(pen_x, 1.0) * SUBPIXEL_BITMAPS_CACHED);
bitmap_index += (bitmap_index < 0 ? SUBPIXEL_BITMAPS_CACHED : 0);
font = font_group_get_glyph(&set, &metric, fonts, codepoint, bitmap_index);
int start_x = floor(pen_x) + metric->bitmap_left;
int end_x = (metric->x1 - metric->x0) + start_x;
int glyph_end = metric->x1, glyph_start = metric->x0;