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add emoji font.

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fix: 97ae9b1709
This commit is contained in:
Hojun-Cho
2025-12-28 19:50:38 +09:00
parent 72063f84b7
commit 874b941439
8 changed files with 67 additions and 20 deletions
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72
font.c
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@@ -10,9 +10,12 @@ struct Glyph
int w, h, ox, oy;
};
static stbtt_fontinfo font;
static uchar *fontdata;
static float scale;
enum { Maxfonts = 4 };
static stbtt_fontinfo fonts[Maxfonts];
static uchar *fontdata[Maxfonts];
static float scale[Maxfonts];
static int nfonts;
static Glyph cache[Nglyphs];
static u32int blendtab[2][256];
@@ -28,25 +31,64 @@ blend(u32int bg, int a)
return (r << 16) | (g << 8) | b;
}
void
fontinit(char *path)
static void
loadfont(char *path)
{
int fd, a;
int fd;
long sz, n;
if(nfonts >= Maxfonts)
die("too many fonts");
fd = open(path, OREAD);
if(fd < 0)
die("can't open font: %s", path);
sz = seek(fd, 0, 2);
seek(fd, 0, 0);
fontdata = emalloc(sz);
n = readn(fd, fontdata, sz);
fontdata[nfonts] = emalloc(sz);
n = readn(fd, fontdata[nfonts], sz);
close(fd);
if(n != sz)
die("can't read font: %s", path);
if(!stbtt_InitFont(&font, fontdata, stbtt_GetFontOffsetForIndex(fontdata, 0)))
if(!stbtt_InitFont(&fonts[nfonts], fontdata[nfonts], stbtt_GetFontOffsetForIndex(fontdata[nfonts], 0)))
die("can't init font: %s", path);
scale = stbtt_ScaleForPixelHeight(&font, Fontsz);
scale[nfonts] = stbtt_ScaleForPixelHeight(&fonts[nfonts], Fontsz);
nfonts++;
}
static int
isfont(char *name)
{
char *p;
p = strrchr(name, '.');
if(p == nil)
return 0;
return strcmp(p, ".ttf") == 0 || strcmp(p, ".otf") == 0;
}
void
fontinit(char *dir)
{
int fd, n, i, a;
Dir *d;
char path[256];
fd = open(dir, OREAD);
if(fd < 0)
die("can't open font dir: %s", dir);
n = dirreadall(fd, &d);
close(fd);
if(n < 0)
die("can't read font dir: %s", dir);
for(i = 0; i < n; i++){
if(isfont(d[i].name)){
snprint(path, sizeof path, "%s/%s", dir, d[i].name);
loadfont(path);
}
}
free(d);
if(nfonts == 0)
die("no fonts in %s", dir);
for(a = 0; a < 256; a++){
blendtab[0][a] = blend(Colbg, a);
blendtab[1][a] = blend(Colsel, a);
@@ -57,14 +99,20 @@ void
putfont(u32int *buf, int w, int h, int px, int py, Rune r)
{
Glyph *g;
int i, j, x, y, a, sel;
int i, j, x, y, a, sel, f;
u32int *p;
if(r >= Nglyphs)
return;
g = &cache[r];
if(g->bmp == nil){
g->bmp = stbtt_GetCodepointBitmap(&font, scale, scale, r, &g->w, &g->h, &g->ox, &g->oy);
for(f = 0; f < nfonts; f++){
if(stbtt_FindGlyphIndex(&fonts[f], r) == 0)
continue;
g->bmp = stbtt_GetCodepointBitmap(&fonts[f], scale[f], scale[f], r, &g->w, &g->h, &g->ox, &g->oy);
if(g->bmp != nil)
break;
}
if(g->bmp == nil)
return;
}