Better text rendering

2 files changed, 0 insertions, 122 deletions

diff --git a/vendor/stb/font.c b/vendor/stb/font.c
deleted file mode 100644
index 6c5106f6..00000000
--- a/vendor/stb/font.c
+++ /dev/null
@@ -1,81 +0,0 @@
-// stb_truetype wrapper for ui_sdl.zig. See font.h. Compiled into the SDL UI
-// backend module alongside stb_truetype_impl.c (which defines the impl).
-#include "font.h"
-#include "stb_truetype.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-struct UIFont {
-    stbtt_fontinfo info;
-    const uint8_t *data;
-};
-
-UIFont *ui_font_new(const uint8_t *data, int32_t len) {
-    if (!data || len <= 0) return NULL;
-    UIFont *f = (UIFont *)calloc(1, sizeof(UIFont));
-    if (!f) return NULL;
-    f->data = data;
-    int offset = stbtt_GetFontOffsetForIndex(data, 0);
-    if (offset < 0 || !stbtt_InitFont(&f->info, (const unsigned char *)data, offset)) {
-        free(f);
-        return NULL;
-    }
-    return f;
-}
-
-void ui_font_free(UIFont *f) {
-    free(f);
-}
-
-float ui_font_scale_for_height(UIFont *f, float px) {
-    return stbtt_ScaleForPixelHeight(&f->info, px);
-}
-
-void ui_font_cell_metrics(UIFont *f, float scale, int32_t *cell_w, int32_t *cell_h, int32_t *ascent) {
-    int asc = 0, desc = 0, gap = 0;
-    stbtt_GetFontVMetrics(&f->info, &asc, &desc, &gap);
-    int a = (int)(asc * scale + 0.5f);
-    int d = (int)(-desc * scale + 0.5f);
-    int g = (int)(gap * scale + 0.5f);
-    *ascent = a;
-    *cell_h = a + d + g;
-    if (*cell_h < 1) *cell_h = 1;
-    // monospace advance of 'M'
-    int adv = 0, lsb = 0;
-    stbtt_GetCodepointHMetrics(&f->info, 'M', &adv, &lsb);
-    int w = (int)(adv * scale + 0.5f);
-    if (w < 1) w = 1;
-    *cell_w = w;
-}
-
-int ui_font_raster(UIFont *f, float scale, int32_t cp,
-                   uint8_t *out, int32_t stride, int32_t cell_w, int32_t cell_h,
-                   int32_t ascent) {
-    if (!out || cell_w <= 0 || cell_h <= 0) return 0;
-    // zero the cell
-    for (int y = 0; y < cell_h; y++)
-        memset(out + (size_t)y * stride, 0, (size_t)cell_w);
-
-    int w = 0, h = 0, xoff = 0, yoff = 0;
-    unsigned char *bm = stbtt_GetCodepointBitmap(&f->info, scale, scale, cp, &w, &h, &xoff, &yoff);
-    if (!bm || w <= 0 || h <= 0) {
-        if (bm) stbtt_FreeBitmap(bm, NULL);
-        return 0;
-    }
-    // origin = (0, baseline=ascent); glyph top-left = (xoff, ascent + yoff).
-    int gx = xoff;
-    int gy = ascent + yoff;
-    for (int y = 0; y < h; y++) {
-        int dy = gy + y;
-        if (dy < 0 || dy >= cell_h) continue;
-        for (int x = 0; x < w; x++) {
-            int dx = gx + x;
-            if (dx < 0 || dx >= cell_w) continue;
-            uint8_t v = bm[y * w + x];
-            if (v) out[(size_t)dy * stride + dx] = v;
-        }
-    }
-    stbtt_FreeBitmap(bm, NULL);
-    return 1;
-}
diff --git a/vendor/stb/font.h b/vendor/stb/font.h
deleted file mode 100644
index 93bbac8d..00000000
--- a/vendor/stb/font.h
+++ /dev/null
@@ -1,41 +0,0 @@
-// Tiny C shim over stb_truetype, so ui_sdl.zig can @cInclude a small header
-// instead of feeding the whole single-header lib to translate-c. The
-// implementation (font.c) pulls in stb_truetype.h (declarations only —
-// stb_truetype_impl.c defines STB_TRUETYPE_IMPLEMENTATION once elsewhere).
-//
-// A "font" is an opaque handle owning a stbtt_fontinfo; all rasterization goes
-// through these functions so the Zig side never touches stb internals.
-#ifndef UI_FONT_H
-#define UI_FONT_H
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct UIFont UIFont;
-
-// Parse the embedded TTF. `data` must stay alive for the lifetime of the font.
-// Returns NULL on failure.
-UIFont *ui_font_new(const uint8_t *data, int32_t len);
-
-// Font metrics at a given pixel height. cell_w is the monospace advance (rounded
-// up); ascent is the baseline offset from the top of a cell.
-float ui_font_scale_for_height(UIFont *f, float px);
-void ui_font_cell_metrics(UIFont *f, float scale, int32_t *cell_w, int32_t *cell_h, int32_t *ascent);
-
-// Rasterize `cp` into `out` (a cell_w*cell_h single-channel mask, row-major,
-// `stride` bytes per row). The glyph is positioned for a monospace cell: origin
-// at the baseline `ascent` pixels from the top. Pixels outside the glyph are 0.
-// Returns 1 if the glyph produced any coverage (0 for an empty/missing glyph,
-// but `out` is still zeroed).
-int ui_font_raster(UIFont *f, float scale, int32_t cp,
-                   uint8_t *out, int32_t stride, int32_t cell_w, int32_t cell_h,
-                   int32_t ascent);
-
-void ui_font_free(UIFont *f);
-
-#ifdef __cplusplus
-}
-#endif
-#endif