Jannis/BoredOS
1
0
Fork 0
mirror of https://github.com/JannisHeydemann/BoredOS.git synced 2026-05-30 02:16:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

browser fixes and optimization

Browse Source
This commit is contained in:
boreddevnl
2026-03-03 22:36:46 +01:00
parent 4083b8a563
commit cc752052dc
3 changed files with 158 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/kernel/font_manager.c
View File

@@ -59,6 +59,16 @@ static inline uint32_t alpha_blend(uint32_t bg, uint32_t fg, uint8_t alpha) {
static ttf_font_t *default_font = NULL;
#define FONT_CACHE_SIZE 2048
typedef struct {
char c;
float pixel_height;
int w, h, xoff, yoff;
unsigned char *bitmap;
} font_cache_entry_t;
static font_cache_entry_t g_font_cache[FONT_CACHE_SIZE];
bool font_manager_init(void) {
// We'll load a default font later if available
return true;
@@ -130,9 +140,35 @@ void font_manager_render_char_scaled(ttf_font_t *font, int x, int y, char c, uin
if (!font) return;
stbtt_fontinfo *info = (stbtt_fontinfo *)font->info;
int cache_idx = ((unsigned char)c * 31 + (int)(scale * 17.0f)) % FONT_CACHE_SIZE;
font_cache_entry_t *entry = &g_font_cache[cache_idx];
unsigned char *bitmap = NULL;
int w, h, xoff, yoff;
float real_scale = stbtt_ScaleForPixelHeight(info, scale); // Convert pixel size back to stbtt scale
unsigned char *bitmap = stbtt_GetCodepointBitmap(info, 0, real_scale, c, &w, &h, &xoff, &yoff);
if (entry->bitmap && entry->c == c && entry->pixel_height == scale) {
bitmap = entry->bitmap;
w = entry->w;
h = entry->h;
xoff = entry->xoff;
yoff = entry->yoff;
} else {
float real_scale = stbtt_ScaleForPixelHeight(info, scale); // Convert pixel size back to stbtt scale
bitmap = stbtt_GetCodepointBitmap(info, 0, real_scale, c, &w, &h, &xoff, &yoff);
if (entry->bitmap) {
stbtt_FreeBitmap(entry->bitmap, NULL);
}
entry->c = c;
entry->pixel_height = scale;
entry->w = w;
entry->h = h;
entry->xoff = xoff;
entry->yoff = yoff;
entry->bitmap = bitmap;
}
if (bitmap) {
for (int row = 0; row < h; row++) {
@@ -146,7 +182,6 @@ void font_manager_render_char_scaled(ttf_font_t *font, int x, int y, char c, uin
}
}
}
stbtt_FreeBitmap(bitmap, NULL);
}
}