Patch ligatures
parent
8a7e02d45d
commit
4f7e452a8c
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@ -1 +1 @@
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*.backup
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*.old
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@ -4,7 +4,7 @@
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include config.mk
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SRC = st.c x.c
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SRC = st.c x.c hb.c
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OBJ = $(SRC:.c=.o)
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all: options st
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@ -22,7 +22,8 @@ config.h:
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$(CC) $(STCFLAGS) -c $<
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st.o: config.h st.h win.h
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x.o: arg.h config.h st.h win.h
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x.o: arg.h config.h st.h win.h hb.h
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hb.o: st.h
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$(OBJ): config.h config.mk
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@ -15,10 +15,12 @@ PKG_CONFIG = pkg-config
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# includes and libs
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INCS = -I$(X11INC) \
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`$(PKG_CONFIG) --cflags fontconfig` \
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`$(PKG_CONFIG) --cflags freetype2`
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`$(PKG_CONFIG) --cflags freetype2` \
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`$(PKG_CONFIG) --cflags harfbuzz`
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LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
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`$(PKG_CONFIG) --libs fontconfig` \
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`$(PKG_CONFIG) --libs freetype2`
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`$(PKG_CONFIG) --libs freetype2` \
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`$(PKG_CONFIG) --libs harfbuzz`
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# flags
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STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
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@ -0,0 +1,136 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include <X11/Xft/Xft.h>
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#include <hb.h>
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#include <hb-ft.h>
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#include "st.h"
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void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
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hb_font_t *hbfindfont(XftFont *match);
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typedef struct {
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XftFont *match;
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hb_font_t *font;
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} HbFontMatch;
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static int hbfontslen = 0;
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static HbFontMatch *hbfontcache = NULL;
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void
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hbunloadfonts()
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{
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for (int i = 0; i < hbfontslen; i++) {
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hb_font_destroy(hbfontcache[i].font);
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XftUnlockFace(hbfontcache[i].match);
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}
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if (hbfontcache != NULL) {
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free(hbfontcache);
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hbfontcache = NULL;
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}
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hbfontslen = 0;
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}
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hb_font_t *
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hbfindfont(XftFont *match)
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{
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for (int i = 0; i < hbfontslen; i++) {
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if (hbfontcache[i].match == match)
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return hbfontcache[i].font;
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}
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/* Font not found in cache, caching it now. */
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hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
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FT_Face face = XftLockFace(match);
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hb_font_t *font = hb_ft_font_create(face, NULL);
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if (font == NULL)
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die("Failed to load Harfbuzz font.");
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hbfontcache[hbfontslen].match = match;
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hbfontcache[hbfontslen].font = font;
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hbfontslen += 1;
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return font;
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}
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void
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hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, size_t len, int x, int y)
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{
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int start = 0, length = 1, gstart = 0;
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hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
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for (int idx = 1, specidx = 1; idx < len; idx++) {
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if (glyphs[idx].mode & ATTR_WDUMMY) {
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length += 1;
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continue;
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}
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if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
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hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
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/* Reset the sequence. */
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length = 1;
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start = specidx;
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gstart = idx;
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} else {
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length += 1;
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}
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specidx++;
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}
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/* EOL. */
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hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
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/* Apply the transformation to glyph specs. */
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for (int i = 0, specidx = 0; i < len; i++) {
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if (glyphs[i].mode & ATTR_WDUMMY)
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continue;
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if (codepoints[i] != specs[specidx].glyph)
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((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
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specs[specidx++].glyph = codepoints[i];
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}
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free(codepoints);
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}
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void
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hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length)
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{
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hb_font_t *font = hbfindfont(xfont);
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if (font == NULL)
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return;
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Rune rune;
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ushort mode = USHRT_MAX;
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hb_buffer_t *buffer = hb_buffer_create();
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hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
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/* Fill buffer with codepoints. */
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for (int i = start; i < (start+length); i++) {
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rune = string[i].u;
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mode = string[i].mode;
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if (mode & ATTR_WDUMMY)
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rune = 0x0020;
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hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
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}
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/* Shape the segment. */
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hb_shape(font, buffer, NULL, 0);
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/* Get new glyph info. */
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hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
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/* Write new codepoints. */
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for (int i = 0; i < length; i++) {
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hb_codepoint_t gid = info[i].codepoint;
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codepoints[start+i] = gid;
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}
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/* Cleanup. */
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hb_buffer_destroy(buffer);
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}
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@ -0,0 +1,7 @@
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#include <X11/Xft/Xft.h>
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#include <hb.h>
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#include <hb-ft.h>
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void hbunloadfonts();
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void hbtransform(XftGlyphFontSpec *, const Glyph *, size_t, int, int);
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Binary file not shown.
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@ -0,0 +1,306 @@
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diff --git a/Makefile b/Makefile
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index 470ac86..38240da 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -4,7 +4,7 @@
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include config.mk
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-SRC = st.c x.c
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+SRC = st.c x.c hb.c
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OBJ = $(SRC:.c=.o)
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all: options st
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@@ -22,7 +22,8 @@ config.h:
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$(CC) $(STCFLAGS) -c $<
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st.o: config.h st.h win.h
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-x.o: arg.h config.h st.h win.h
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+x.o: arg.h config.h st.h win.h hb.h
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+hb.o: st.h
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$(OBJ): config.h config.mk
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diff --git a/config.mk b/config.mk
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index beafc35..3df5c83 100644
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--- a/config.mk
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+++ b/config.mk
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@@ -15,10 +15,12 @@ PKG_CONFIG = pkg-config
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# includes and libs
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INCS = -I$(X11INC) \
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`$(PKG_CONFIG) --cflags fontconfig` \
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- `$(PKG_CONFIG) --cflags freetype2`
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+ `$(PKG_CONFIG) --cflags freetype2` \
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+ `$(PKG_CONFIG) --cflags harfbuzz`
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LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
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`$(PKG_CONFIG) --libs fontconfig` \
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- `$(PKG_CONFIG) --libs freetype2`
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+ `$(PKG_CONFIG) --libs freetype2` \
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+ `$(PKG_CONFIG) --libs harfbuzz`
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# flags
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STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
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diff --git a/hb.c b/hb.c
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new file mode 100644
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index 0000000..7df2828
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--- /dev/null
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+++ b/hb.c
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@@ -0,0 +1,136 @@
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+#include <stdlib.h>
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+#include <stdio.h>
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+#include <math.h>
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+#include <X11/Xft/Xft.h>
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+#include <hb.h>
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+#include <hb-ft.h>
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+
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+#include "st.h"
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+
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+void hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length);
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+hb_font_t *hbfindfont(XftFont *match);
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+
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+typedef struct {
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+ XftFont *match;
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+ hb_font_t *font;
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+} HbFontMatch;
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+
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+static int hbfontslen = 0;
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+static HbFontMatch *hbfontcache = NULL;
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+
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+void
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+hbunloadfonts()
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+{
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+ for (int i = 0; i < hbfontslen; i++) {
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+ hb_font_destroy(hbfontcache[i].font);
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+ XftUnlockFace(hbfontcache[i].match);
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+ }
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+
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+ if (hbfontcache != NULL) {
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+ free(hbfontcache);
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+ hbfontcache = NULL;
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+ }
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+ hbfontslen = 0;
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+}
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+
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+hb_font_t *
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+hbfindfont(XftFont *match)
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+{
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+ for (int i = 0; i < hbfontslen; i++) {
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+ if (hbfontcache[i].match == match)
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+ return hbfontcache[i].font;
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+ }
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+
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+ /* Font not found in cache, caching it now. */
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+ hbfontcache = realloc(hbfontcache, sizeof(HbFontMatch) * (hbfontslen + 1));
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+ FT_Face face = XftLockFace(match);
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+ hb_font_t *font = hb_ft_font_create(face, NULL);
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+ if (font == NULL)
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+ die("Failed to load Harfbuzz font.");
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+
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+ hbfontcache[hbfontslen].match = match;
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+ hbfontcache[hbfontslen].font = font;
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+ hbfontslen += 1;
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+
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+ return font;
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+}
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+
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+void
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+hbtransform(XftGlyphFontSpec *specs, const Glyph *glyphs, size_t len, int x, int y)
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+{
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+ int start = 0, length = 1, gstart = 0;
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+ hb_codepoint_t *codepoints = calloc(len, sizeof(hb_codepoint_t));
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+
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+ for (int idx = 1, specidx = 1; idx < len; idx++) {
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+ if (glyphs[idx].mode & ATTR_WDUMMY) {
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+ length += 1;
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+ continue;
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+ }
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+
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+ if (specs[specidx].font != specs[start].font || ATTRCMP(glyphs[gstart], glyphs[idx]) || selected(x + idx, y) != selected(x + gstart, y)) {
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+ hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
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+
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+ /* Reset the sequence. */
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+ length = 1;
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+ start = specidx;
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+ gstart = idx;
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+ } else {
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+ length += 1;
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+ }
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+
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+ specidx++;
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+ }
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+
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+ /* EOL. */
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+ hbtransformsegment(specs[start].font, glyphs, codepoints, gstart, length);
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+
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+ /* Apply the transformation to glyph specs. */
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+ for (int i = 0, specidx = 0; i < len; i++) {
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+ if (glyphs[i].mode & ATTR_WDUMMY)
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+ continue;
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+
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+ if (codepoints[i] != specs[specidx].glyph)
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+ ((Glyph *)glyphs)[i].mode |= ATTR_LIGA;
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+
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+ specs[specidx++].glyph = codepoints[i];
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+ }
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+
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+ free(codepoints);
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+}
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+
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+void
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+hbtransformsegment(XftFont *xfont, const Glyph *string, hb_codepoint_t *codepoints, int start, int length)
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+{
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+ hb_font_t *font = hbfindfont(xfont);
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+ if (font == NULL)
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+ return;
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+
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+ Rune rune;
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+ ushort mode = USHRT_MAX;
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+ hb_buffer_t *buffer = hb_buffer_create();
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+ hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
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+
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+ /* Fill buffer with codepoints. */
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+ for (int i = start; i < (start+length); i++) {
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+ rune = string[i].u;
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+ mode = string[i].mode;
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+ if (mode & ATTR_WDUMMY)
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+ rune = 0x0020;
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+ hb_buffer_add_codepoints(buffer, &rune, 1, 0, 1);
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+ }
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+
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+ /* Shape the segment. */
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+ hb_shape(font, buffer, NULL, 0);
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+
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+ /* Get new glyph info. */
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+ hb_glyph_info_t *info = hb_buffer_get_glyph_infos(buffer, NULL);
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+
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+ /* Write new codepoints. */
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+ for (int i = 0; i < length; i++) {
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+ hb_codepoint_t gid = info[i].codepoint;
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+ codepoints[start+i] = gid;
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+ }
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+
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+ /* Cleanup. */
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+ hb_buffer_destroy(buffer);
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+}
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diff --git a/hb.h b/hb.h
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new file mode 100644
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index 0000000..b3e02d0
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--- /dev/null
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+++ b/hb.h
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@@ -0,0 +1,7 @@
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+#include <X11/Xft/Xft.h>
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+#include <hb.h>
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+#include <hb-ft.h>
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+
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+void hbunloadfonts();
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+void hbtransform(XftGlyphFontSpec *, const Glyph *, size_t, int, int);
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+
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diff --git a/st.c b/st.c
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index 2bf133f..747f7b4 100644
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--- a/st.c
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+++ b/st.c
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@@ -2599,7 +2599,8 @@ draw(void)
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drawregion(0, 0, term.col, term.row);
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xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
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- term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
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+ term.ocx, term.ocy, term.line[term.ocy][term.ocx],
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+ term.line[term.ocy], term.col);
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term.ocx = cx;
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term.ocy = term.c.y;
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xfinishdraw();
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diff --git a/st.h b/st.h
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index d978458..c9b279b 100644
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--- a/st.h
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+++ b/st.h
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@@ -11,7 +11,8 @@
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#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
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#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
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#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
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-#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
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+#define ATTRCMP(a, b) (((a).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) != ((b).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) || \
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+ (a).fg != (b).fg || \
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(a).bg != (b).bg)
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#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
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(t1.tv_nsec-t2.tv_nsec)/1E6)
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@@ -33,6 +34,7 @@ enum glyph_attribute {
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ATTR_WRAP = 1 << 8,
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ATTR_WIDE = 1 << 9,
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ATTR_WDUMMY = 1 << 10,
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+ ATTR_LIGA = 1 << 11,
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ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
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};
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diff --git a/win.h b/win.h
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index a6ef1b9..bc0d180 100644
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--- a/win.h
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+++ b/win.h
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@@ -25,7 +25,7 @@ enum win_mode {
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void xbell(void);
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void xclipcopy(void);
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-void xdrawcursor(int, int, Glyph, int, int, Glyph);
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+void xdrawcursor(int, int, Glyph, int, int, Glyph, Line, int);
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void xdrawline(Line, int, int, int);
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void xfinishdraw(void);
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void xloadcols(void);
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diff --git a/x.c b/x.c
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index e5f1737..3334a83 100644
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--- a/x.c
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+++ b/x.c
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@@ -19,6 +19,7 @@ char *argv0;
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#include "arg.h"
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#include "st.h"
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#include "win.h"
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+#include "hb.h"
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|
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/* types used in config.h */
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typedef struct {
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@@ -1031,6 +1032,9 @@ xunloadfont(Font *f)
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void
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xunloadfonts(void)
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{
|
||||
+ /* Clear Harfbuzz font cache. */
|
||||
+ hbunloadfonts();
|
||||
+
|
||||
/* Free the loaded fonts in the font cache. */
|
||||
while (frclen > 0)
|
||||
XftFontClose(xw.dpy, frc[--frclen].font);
|
||||
@@ -1229,7 +1233,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
|
||||
mode = glyphs[i].mode;
|
||||
|
||||
/* Skip dummy wide-character spacing. */
|
||||
- if (mode == ATTR_WDUMMY)
|
||||
+ if (mode & ATTR_WDUMMY)
|
||||
continue;
|
||||
|
||||
/* Determine font for glyph if different from previous glyph. */
|
||||
@@ -1336,6 +1340,9 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
|
||||
numspecs++;
|
||||
}
|
||||
|
||||
+ /* Harfbuzz transformation for ligatures. */
|
||||
+ hbtransform(specs, glyphs, len, x, y);
|
||||
+
|
||||
return numspecs;
|
||||
}
|
||||
|
||||
@@ -1485,14 +1492,17 @@ xdrawglyph(Glyph g, int x, int y)
|
||||
}
|
||||
|
||||
void
|
||||
-xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
|
||||
+xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
|
||||
{
|
||||
Color drawcol;
|
||||
|
||||
/* remove the old cursor */
|
||||
if (selected(ox, oy))
|
||||
og.mode ^= ATTR_REVERSE;
|
||||
- xdrawglyph(og, ox, oy);
|
||||
+
|
||||
+ /* Redraw the line where cursor was previously.
|
||||
+ * It will restore the ligatures broken by the cursor. */
|
||||
+ xdrawline(line, 0, oy, len);
|
||||
|
||||
if (IS_SET(MODE_HIDE))
|
||||
return;
|
BIN
.suckless/st/st
BIN
.suckless/st/st
Binary file not shown.
|
@ -2585,7 +2585,8 @@ draw(void)
|
|||
|
||||
drawregion(0, 0, term.col, term.row);
|
||||
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
|
||||
term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
|
||||
term.ocx, term.ocy, term.line[term.ocy][term.ocx],
|
||||
term.line[term.ocy], term.col);
|
||||
term.ocx = cx, term.ocy = term.c.y;
|
||||
xfinishdraw();
|
||||
xximspot(term.ocx, term.ocy);
|
||||
|
|
File diff suppressed because it is too large
Load Diff
|
@ -0,0 +1,12 @@
|
|||
--- st.c
|
||||
+++ st.c
|
||||
@@ -2599,7 +2599,8 @@ draw(void)
|
||||
|
||||
drawregion(0, 0, term.col, term.row);
|
||||
xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
|
||||
- term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
|
||||
+ term.ocx, term.ocy, term.line[term.ocy][term.ocx],
|
||||
+ term.line[term.ocy], term.col);
|
||||
term.ocx = cx;
|
||||
term.ocy = term.c.y;
|
||||
xfinishdraw();
|
|
@ -11,7 +11,8 @@
|
|||
#define DIVCEIL(n, d) (((n) + ((d) - 1)) / (d))
|
||||
#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
|
||||
#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
|
||||
#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || \
|
||||
#define ATTRCMP(a, b) (((a).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) != ((b).mode & (~ATTR_WRAP) & (~ATTR_LIGA)) || \
|
||||
(a).fg != (b).fg || \
|
||||
(a).bg != (b).bg)
|
||||
#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + \
|
||||
(t1.tv_nsec-t2.tv_nsec)/1E6)
|
||||
|
@ -33,6 +34,7 @@ enum glyph_attribute {
|
|||
ATTR_WRAP = 1 << 8,
|
||||
ATTR_WIDE = 1 << 9,
|
||||
ATTR_WDUMMY = 1 << 10,
|
||||
ATTR_LIGA = 1 << 11,
|
||||
ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
|
||||
};
|
||||
|
||||
|
|
Binary file not shown.
|
@ -25,7 +25,7 @@ enum win_mode {
|
|||
|
||||
void xbell(void);
|
||||
void xclipcopy(void);
|
||||
void xdrawcursor(int, int, Glyph, int, int, Glyph);
|
||||
void xdrawcursor(int, int, Glyph, int, int, Glyph, Line, int);
|
||||
void xdrawline(Line, int, int, int);
|
||||
void xfinishdraw(void);
|
||||
void xloadcols(void);
|
||||
|
|
|
@ -19,6 +19,7 @@ static char *argv0;
|
|||
#include "arg.h"
|
||||
#include "st.h"
|
||||
#include "win.h"
|
||||
#include "hb.h"
|
||||
|
||||
/* types used in config.h */
|
||||
typedef struct {
|
||||
|
@ -1020,6 +1021,9 @@ xunloadfont(Font *f)
|
|||
void
|
||||
xunloadfonts(void)
|
||||
{
|
||||
/* Clear Harfbuzz font cache. */
|
||||
hbunloadfonts();
|
||||
|
||||
/* Free the loaded fonts in the font cache. */
|
||||
while (frclen > 0)
|
||||
XftFontClose(xw.dpy, frc[--frclen].font);
|
||||
|
@ -1219,7 +1223,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
|
|||
mode = glyphs[i].mode;
|
||||
|
||||
/* Skip dummy wide-character spacing. */
|
||||
if (mode == ATTR_WDUMMY)
|
||||
if (mode & ATTR_WDUMMY)
|
||||
continue;
|
||||
|
||||
/* Determine font for glyph if different from previous glyph. */
|
||||
|
@ -1326,6 +1330,9 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
|
|||
numspecs++;
|
||||
}
|
||||
|
||||
/* Harfbuzz transformation for ligatures. */
|
||||
hbtransform(specs, glyphs, len, x, y);
|
||||
|
||||
return numspecs;
|
||||
}
|
||||
|
||||
|
@ -1475,14 +1482,17 @@ xdrawglyph(Glyph g, int x, int y)
|
|||
}
|
||||
|
||||
void
|
||||
xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
|
||||
xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og, Line line, int len)
|
||||
{
|
||||
Color drawcol;
|
||||
|
||||
/* remove the old cursor */
|
||||
if (selected(ox, oy))
|
||||
og.mode ^= ATTR_REVERSE;
|
||||
xdrawglyph(og, ox, oy);
|
||||
|
||||
/* Redraw the line where cursor was previously.
|
||||
* It will restore the ligatures broken by the cursor. */
|
||||
xdrawline(line, 0, oy, len);
|
||||
|
||||
if (IS_SET(MODE_HIDE))
|
||||
return;
|
||||
|
|
File diff suppressed because it is too large
Load Diff
BIN
.suckless/st/x.o
BIN
.suckless/st/x.o
Binary file not shown.
Loading…
Reference in New Issue