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boreddevnl
2026-03-06 00:27:57 +01:00
parent b708ad7e45
commit 41d1e3960b
13 changed files with 600 additions and 316 deletions
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39
src/kernel/font_manager.c
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@@ -67,7 +67,8 @@ typedef struct {
unsigned char *bitmap;
} font_cache_entry_t;
static font_cache_entry_t g_font_cache[FONT_CACHE_SIZE];
// Cache is disabled for now due to race conditions and collisions
// 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
@@ -141,34 +142,15 @@ void font_manager_render_char_scaled(ttf_font_t *font, int x, int y, char c, uin
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;
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;
}
float real_scale = stbtt_ScaleForPixelHeight(info, scale); // Convert pixel size back to stbtt scale
int codepoint = (unsigned char)c;
if (codepoint == 128) codepoint = 0x2014; // Unicode emdash
bitmap = stbtt_GetCodepointBitmap(info, 0, real_scale, codepoint, &w, &h, &xoff, &yoff);
if (bitmap) {
for (int row = 0; row < h; row++) {
@@ -182,6 +164,7 @@ void font_manager_render_char_scaled(ttf_font_t *font, int x, int y, char c, uin
}
}
}
stbtt_FreeBitmap(bitmap, NULL);
}
}
@@ -221,7 +204,9 @@ int font_manager_get_string_width_scaled(ttf_font_t *font, const char *s, float
int width = 0;
while (*s) {
int advance, lsb;
stbtt_GetCodepointHMetrics(info, *s, &advance, &lsb);
int codepoint = (unsigned char)*s;
if (codepoint == 128) codepoint = 0x2014; // Unicode emdash
stbtt_GetCodepointHMetrics(info, codepoint, &advance, &lsb);
// Round per-character to match draw_string's accumulation
width += (int)(advance * real_scale + 0.5f);
s++;