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checkpoint: BoredWord application

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boreddevnl
2026-03-17 14:41:13 +01:00
parent d824b4610a
commit 88f178e368
13 changed files with 1976 additions and 56 deletions
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104
src/wm/font_manager.c
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@@ -17,12 +17,10 @@ float kfabsf(float x) {
}
float kpowf(float b, float e) {
// Very simplified pow for stb_truetype's needs
if (e == 0) return 1.0f;
if (e == 1) return b;
if (e == 0.5f) return ksqrtf(b);
// Fallback/log-based would be complex, let's see if this suffices
float res = 1.0f;
for (int i = 0; i < (int)e; i++) res *= b;
return res;
@@ -33,13 +31,11 @@ float kfmodf(float x, float y) {
}
float kcosf(float x) {
// Taylor series for cos(x) around 0
float x2 = x * x;
return 1.0f - (x2 / 2.0f) + (x2 * x2 / 24.0f) - (x2 * x2 * x2 / 720.0f);
}
float kacosf(float x) {
// Very rough approximation for acos(x)
if (x >= 1.0f) return 0;
if (x <= -1.0f) return 3.14159f;
return 1.57079f - x - (x*x*x)/6.0f;
@@ -59,6 +55,15 @@ static inline uint32_t alpha_blend(uint32_t bg, uint32_t fg, uint8_t alpha) {
static ttf_font_t *default_font = NULL;
#define MAX_LOADED_FONTS 8
typedef struct {
char path[128];
ttf_font_t *font;
} loaded_font_t;
static loaded_font_t loaded_fonts[MAX_LOADED_FONTS];
static int loaded_font_count = 0;
#define FONT_CACHE_SIZE 2048
typedef struct {
char c;
@@ -67,15 +72,22 @@ typedef struct {
unsigned char *bitmap;
} font_cache_entry_t;
// 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
return true;
}
ttf_font_t* font_manager_load(const char *path, float size) {
(void)size;
for(int i=0; i<loaded_font_count; i++) {
int match = 1;
for(int j=0; path[j] || loaded_fonts[i].path[j]; j++) {
if (path[j] != loaded_fonts[i].path[j]) { match = 0; break; }
}
if (match) return loaded_fonts[i].font;
}
FAT32_FileHandle *fh = fat32_open(path, "r");
if (!fh || !fh->valid) {
serial_write("[FONT] Failed to open font file: ");
@@ -126,6 +138,13 @@ ttf_font_t* font_manager_load(const char *path, float size) {
stbtt_GetFontVMetrics(info, &font->ascent, &font->descent, &font->line_gap);
if (!default_font) default_font = font;
if (loaded_font_count < MAX_LOADED_FONTS) {
int i=0; while(path[i] && i<127) { loaded_fonts[loaded_font_count].path[i] = path[i]; i++; }
loaded_fonts[loaded_font_count].path[i] = 0;
loaded_fonts[loaded_font_count].font = font;
loaded_font_count++;
}
return font;
}
@@ -145,16 +164,16 @@ void font_manager_render_char_scaled(ttf_font_t *font, int x, int y, char c, uin
unsigned char *bitmap = NULL;
int w, h, xoff, yoff;
float real_scale = stbtt_ScaleForPixelHeight(info, scale); // Convert pixel size back to stbtt scale
float real_scale = stbtt_ScaleForPixelHeight(info, scale);
int codepoint = (unsigned char)c;
if (codepoint == 128) codepoint = 0x2014; // &mdash; (—)
if (codepoint == 129) codepoint = 0x2013; // &ndash; (–)
if (codepoint == 130) codepoint = 0x2022; // &bull; (•)
if (codepoint == 131) codepoint = 0x2026; // &hellip; (…)
if (codepoint == 132) codepoint = 0x2122; // &trade; (™)
if (codepoint == 133) codepoint = 0x20AC; // &euro; (€)
if (codepoint == 134) codepoint = 0x00B7; // &middot; (·)
if (codepoint == 128) codepoint = 0x2014;
if (codepoint == 129) codepoint = 0x2013;
if (codepoint == 130) codepoint = 0x2022;
if (codepoint == 131) codepoint = 0x2026;
if (codepoint == 132) codepoint = 0x2122;
if (codepoint == 133) codepoint = 0x20AC;
if (codepoint == 134) codepoint = 0x00B7;
bitmap = stbtt_GetCodepointBitmap(info, 0, real_scale, codepoint, &w, &h, &xoff, &yoff);
@@ -174,6 +193,46 @@ void font_manager_render_char_scaled(ttf_font_t *font, int x, int y, char c, uin
}
}
void font_manager_render_char_sloped(ttf_font_t *font, int x, int y, char c, uint32_t color, float scale, float slope, void (*put_pixel_fn)(int, int, uint32_t)) {
if (!font) font = default_font;
if (!font) return;
stbtt_fontinfo *info = (stbtt_fontinfo *)font->info;
unsigned char *bitmap = NULL;
int w, h, xoff, yoff;
float real_scale = stbtt_ScaleForPixelHeight(info, scale);
int codepoint = (unsigned char)c;
if (codepoint == 128) codepoint = 0x2014;
if (codepoint == 129) codepoint = 0x2013;
if (codepoint == 130) codepoint = 0x2022;
if (codepoint == 131) codepoint = 0x2026;
if (codepoint == 132) codepoint = 0x2122;
if (codepoint == 133) codepoint = 0x20AC;
if (codepoint == 134) codepoint = 0x00B7;
bitmap = stbtt_GetCodepointBitmap(info, 0, real_scale, codepoint, &w, &h, &xoff, &yoff);
if (bitmap) {
for (int row = 0; row < h; row++) {
int slant_offset = (int)((h - row) * slope);
for (int col = 0; col < w; col++) {
unsigned char alpha = bitmap[row * w + col];
if (alpha > 0) {
int px = x + col + xoff + slant_offset;
int py = y + row + yoff;
uint32_t bg = graphics_get_pixel(px, py);
put_pixel_fn(px, py, alpha_blend(bg, color, alpha));
}
}
}
stbtt_FreeBitmap(bitmap, NULL);
}
}
int font_manager_get_string_width(ttf_font_t *font, const char *s) {
if (!font) font = default_font;
if (!font) return 0;
@@ -211,15 +270,14 @@ int font_manager_get_string_width_scaled(ttf_font_t *font, const char *s, float
while (*s) {
int advance, lsb;
int codepoint = (unsigned char)*s;
if (codepoint == 128) codepoint = 0x2014; // &mdash; (—)
if (codepoint == 129) codepoint = 0x2013; // &ndash; (–)
if (codepoint == 130) codepoint = 0x2022; // &bull; (•)
if (codepoint == 131) codepoint = 0x2026; // &hellip; (…)
if (codepoint == 132) codepoint = 0x2122; // &trade; (™)
if (codepoint == 133) codepoint = 0x20AC; // &euro; (€)
if (codepoint == 134) codepoint = 0x00B7; // &middot; (·)
if (codepoint == 128) codepoint = 0x2014;
if (codepoint == 129) codepoint = 0x2013;
if (codepoint == 130) codepoint = 0x2022;
if (codepoint == 131) codepoint = 0x2026;
if (codepoint == 132) codepoint = 0x2122;
if (codepoint == 133) codepoint = 0x20AC;
if (codepoint == 134) codepoint = 0x00B7;
stbtt_GetCodepointHMetrics(info, codepoint, &advance, &lsb);
// Round per-character to match draw_string's accumulation
width += (int)(advance * real_scale + 0.5f);
s++;
}