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-rw-r--r--sys/cmd/term/hb.c147
1 files changed, 0 insertions, 147 deletions
diff --git a/sys/cmd/term/hb.c b/sys/cmd/term/hb.c
deleted file mode 100644
index 4b6b42d..0000000
--- a/sys/cmd/term/hb.c
+++ /dev/null
@@ -1,147 +0,0 @@
-#include "term.h"
-
-#include <X11/Xft/Xft.h>
-#include <harfbuzz/hb-ft.h>
-
-#define FEATURE(c1,c2,c3,c4) { .tag = HB_TAG(c1,c2,c3,c4), .value = 1, .start = HB_FEATURE_GLOBAL_START, .end = HB_FEATURE_GLOBAL_END }
-
-hb_font_t *hbfindfont(XftFont *match);
-void hbtransformsegment(XftFont *xfont, const Letter *glyph, rune *codepoints, int start, int end);
-
-typedef struct
-{
- XftFont *match;
- hb_font_t *font;
-} HbFontMatch;
-
-static int hbfontslen = 0;
-static HbFontMatch *hbfontcache = nil;
-
-/*
- * Replace 0 with a list of font features, wrapped in FEATURE macro, e.g.
- * FEATURE('c', 'a', 'l', 't'), FEATURE('d', 'l', 'i', 'g')
- */
-hb_feature_t features[] = { 0 };
-
-void
-hbunloadfonts()
-{
- int i;
- for(i = 0; i < hbfontslen; i++) {
- hb_font_destroy(hbfontcache[i].font);
- XftUnlockFace(hbfontcache[i].match);
- }
-
- if(hbfontcache != nil) {
- free(hbfontcache);
- hbfontcache = nil;
- }
-
- hbfontslen = 0;
-}
-
-hb_font_t *
-hbfindfont(XftFont *match)
-{
- int i;
- for (i = 0; i < hbfontslen; i++) {
- if (hbfontcache[i].match == match)
- return hbfontcache[i].font;
- }
-
- /* Font not found in cache, caching it now. */
- hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
- FT_Face face = XftLockFace(match);
- hb_font_t *font = hb_ft_font_create(face, NULL);
- if(!font)
- fatal("failed to load Harfbuzz font.");
-
- hbfontcache[hbfontslen].match = match;
- hbfontcache[hbfontslen].font = font;
- hbfontslen += 1;
-
- return font;
-}
-
-void
-hbtransform(XftGlyphFontSpec *specs, const Letter *glyphs, size_t len, int x, int y)
-{
- int idx, specidx, start = 0, length = 1, gstart = 0;
- rune *runes = calloc((unsigned int)len, sizeof(hb_codepoint_t));
-
- for(idx = 1, specidx = 1; idx < len; idx++) {
- if(glyphs[idx].mode & Gwdummy) {
- length += 1;
- continue;
- }
-
- if(specs[specidx].font != specs[start].font
- || GLYPHCMP(glyphs[gstart], glyphs[idx])
- || selected(x + idx, y) != selected(x + gstart, y)
- ) {
- hbtransformsegment(specs[start].font, glyphs, runes, gstart, length);
- /* reset the sequence. */
- length = 1;
- start = specidx;
- gstart = idx;
- } else {
- length += 1;
- }
-
- specidx++;
- }
-
- /* eol */
- hbtransformsegment(specs[start].font, glyphs, runes, gstart, length);
-
- /* apply the transformation to glyph specs. */
- for(idx = 0, specidx = 0; idx < len; idx++) {
- if(glyphs[idx].mode & Gwdummy)
- continue;
-
- if(runes[idx] != specs[specidx].glyph)
- ((Letter *)glyphs)[idx].mode |= Gliga;
-
- specs[specidx++].glyph = runes[idx];
- }
-
- free(runes);
-}
-
-void
-hbtransformsegment(XftFont *xfont, const Letter *glyph, rune *codepoints, int start, int len)
-{
- hb_font_t *font = hbfindfont(xfont);
- if(!font)
- return;
-
- int i;
- rune r;
- ushort mode = USHRT_MAX;
- hb_buffer_t *buffer = hb_buffer_create();
- hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
-
- /* Fill buffer with codepoints. */
- for(i=start; i < (start+len); i++) {
- r = glyph[i].u;
- mode = glyph[i].mode;
- if(mode & Gwdummy)
- r = 0x0020;
- hb_buffer_add_codepoints(buffer, &r, 1, 0, 1);
- }
-
- /* Shape the segment. */
- hb_shape(font, buffer, features, sizeof(features));
-
- /* Get new glyph info. */
- hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
-
- /* Write new codepoints. */
- for(i = 0; i < len; i++) {
- r = info[i].codepoint;
- codepoints[start+i] = r;
- }
-
- /* Cleanup. */
- hb_buffer_destroy(buffer);
-}