#define ESC_ARG_SIZ 16
#define STR_BUF_SIZ ESC_BUF_SIZ
#define STR_ARG_SIZ ESC_ARG_SIZ
-#define DRAW_BUF_SIZ 20*1024
#define XK_ANY_MOD UINT_MAX
#define XK_NO_MOD 0
#define XK_SWITCH_MOD (1<<13)
#define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
#define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
-#define ISDELIM(u) (BETWEEN(u, 0, 127) && strchr(worddelimiters, u) != NULL)
+#define ISDELIM(u) (utf8strchr(worddelimiters, u) != NULL)
#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 || (a).bg != (b).bg)
#define IS_SET(flag) ((term.mode & (flag)) != 0)
enum glyph_attribute {
- ATTR_NULL = 0,
- ATTR_BOLD = 1 << 0,
- ATTR_FAINT = 1 << 1,
- ATTR_ITALIC = 1 << 2,
- ATTR_UNDERLINE = 1 << 3,
- ATTR_BLINK = 1 << 4,
- ATTR_REVERSE = 1 << 5,
- ATTR_INVISIBLE = 1 << 6,
- ATTR_STRUCK = 1 << 7,
- ATTR_WRAP = 1 << 8,
- ATTR_WIDE = 1 << 9,
- ATTR_WDUMMY = 1 << 10,
+ ATTR_NULL = 0,
+ ATTR_BOLD = 1 << 0,
+ ATTR_FAINT = 1 << 1,
+ ATTR_ITALIC = 1 << 2,
+ ATTR_UNDERLINE = 1 << 3,
+ ATTR_BLINK = 1 << 4,
+ ATTR_REVERSE = 1 << 5,
+ ATTR_INVISIBLE = 1 << 6,
+ ATTR_STRUCK = 1 << 7,
+ ATTR_WRAP = 1 << 8,
+ ATTR_WIDE = 1 << 9,
+ ATTR_WDUMMY = 1 << 10,
+ ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
};
enum cursor_movement {
typedef struct {
Rune u; /* character code */
ushort mode; /* attribute flags */
- ushort fg; /* foreground */
- ushort bg; /* background */
+ uint32_t fg; /* foreground */
+ uint32_t bg; /* background */
} Glyph;
typedef Glyph *Line;
Line *line; /* screen */
Line *alt; /* alternate screen */
bool *dirty; /* dirtyness of lines */
+ XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
TCursor c; /* cursor */
int top; /* top scroll limit */
int bot; /* bottom scroll limit */
static void tstrsequence(uchar);
static inline ushort sixd_to_16bit(int);
-static void xdraws(char *, Glyph, int, int, int, int);
+static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
+static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
static void xdrawglyph(Glyph, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
static Rune utf8decodebyte(char, size_t *);
static size_t utf8encode(Rune, char *);
static char utf8encodebyte(Rune, size_t);
+static char *utf8strchr(char *s, Rune u);
static size_t utf8validate(Rune *, size_t);
static ssize_t xwrite(int, const char *, size_t);
return utfbyte[i] | (u & ~utfmask[i]);
}
+char *
+utf8strchr(char *s, Rune u) {
+ Rune r;
+ size_t i, j, len;
+
+ len = strlen(s);
+ for(i = 0, j = 0; i < len; i += j) {
+ if(!(j = utf8decode(&s[i], &r, len - i)))
+ break;
+ if(r == u)
+ return &(s[i]);
+ }
+ return NULL;
+}
+
size_t
utf8validate(Rune *u, size_t i) {
if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
selclear(XEvent *e) {
if(sel.ob.x == -1)
return;
+ sel.mode = SEL_IDLE;
sel.ob.x = -1;
tsetdirt(sel.nb.y, sel.ne.y);
}
free(term.alt[i]);
}
+ /* resize to new width */
+ term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
+
/* resize to new height */
term.line = xrealloc(term.line, row * sizeof(Line));
term.alt = xrealloc(term.alt, row * sizeof(Line));
XSync(xw.dpy, False);
}
-void
-xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
- int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
- width = charlen * xw.cw, xp, i;
- int frcflags, charexists;
- int u8fl, u8fblen, u8cblen, doesexist;
- char *u8c, *u8fs;
- Rune unicodep;
+int
+xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
+{
+ float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
+ ushort mode, prevmode = USHRT_MAX;
Font *font = &dc.font;
+ int frcflags = FRC_NORMAL;
+ float runewidth = xw.cw;
+ Rune rune;
+ FT_UInt glyphidx;
FcResult fcres;
FcPattern *fcpattern, *fontpattern;
FcFontSet *fcsets[] = { NULL };
FcCharSet *fccharset;
+ int i, f, numspecs = 0;
+
+ for(i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
+ /* Fetch rune and mode for current glyph. */
+ rune = glyphs[i].u;
+ mode = glyphs[i].mode;
+
+ /* Skip dummy wide-character spacing. */
+ if(mode == ATTR_WDUMMY)
+ continue;
+
+ /* Determine font for glyph if different from previous glyph. */
+ if(prevmode != mode) {
+ prevmode = mode;
+ font = &dc.font;
+ frcflags = FRC_NORMAL;
+ runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
+ if((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
+ font = &dc.ibfont;
+ frcflags = FRC_ITALICBOLD;
+ } else if(mode & ATTR_ITALIC) {
+ font = &dc.ifont;
+ frcflags = FRC_ITALIC;
+ } else if(mode & ATTR_BOLD) {
+ font = &dc.bfont;
+ frcflags = FRC_BOLD;
+ }
+ yp = winy + font->ascent;
+ }
+
+ /* Lookup character index with default font. */
+ glyphidx = XftCharIndex(xw.dpy, font->match, rune);
+ if(glyphidx) {
+ specs[numspecs].font = font->match;
+ specs[numspecs].glyph = glyphidx;
+ specs[numspecs].x = (short)xp;
+ specs[numspecs].y = (short)yp;
+ xp += runewidth;
+ numspecs++;
+ continue;
+ }
+
+ /* Fallback on font cache, search the font cache for match. */
+ for(f = 0; f < frclen; f++) {
+ glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
+ /* Everything correct. */
+ if(glyphidx && frc[f].flags == frcflags)
+ break;
+ /* We got a default font for a not found glyph. */
+ if(!glyphidx && frc[f].flags == frcflags
+ && frc[f].unicodep == rune) {
+ break;
+ }
+ }
+
+ /* Nothing was found. Use fontconfig to find matching font. */
+ if(f >= frclen) {
+ if(!font->set)
+ font->set = FcFontSort(0, font->pattern,
+ FcTrue, 0, &fcres);
+ fcsets[0] = font->set;
+
+ /*
+ * Nothing was found in the cache. Now use
+ * some dozen of Fontconfig calls to get the
+ * font for one single character.
+ *
+ * Xft and fontconfig are design failures.
+ */
+ fcpattern = FcPatternDuplicate(font->pattern);
+ fccharset = FcCharSetCreate();
+
+ FcCharSetAddChar(fccharset, rune);
+ FcPatternAddCharSet(fcpattern, FC_CHARSET,
+ fccharset);
+ FcPatternAddBool(fcpattern, FC_SCALABLE,
+ FcTrue);
+
+ FcConfigSubstitute(0, fcpattern,
+ FcMatchPattern);
+ FcDefaultSubstitute(fcpattern);
+
+ fontpattern = FcFontSetMatch(0, fcsets, 1,
+ fcpattern, &fcres);
+
+ /*
+ * Overwrite or create the new cache entry.
+ */
+ if(frclen >= LEN(frc)) {
+ frclen = LEN(frc) - 1;
+ XftFontClose(xw.dpy, frc[frclen].font);
+ frc[frclen].unicodep = 0;
+ }
+
+ frc[frclen].font = XftFontOpenPattern(xw.dpy,
+ fontpattern);
+ frc[frclen].flags = frcflags;
+ frc[frclen].unicodep = rune;
+
+ glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
+
+ f = frclen;
+ frclen++;
+
+ FcPatternDestroy(fcpattern);
+ FcCharSetDestroy(fccharset);
+ }
+
+ specs[numspecs].font = frc[f].font;
+ specs[numspecs].glyph = glyphidx;
+ specs[numspecs].x = (short)xp;
+ specs[numspecs].y = (short)(winy + frc[f].font->ascent);
+ xp += runewidth;
+ numspecs++;
+ }
+
+ return numspecs;
+}
+
+void
+xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y) {
+ int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+ int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
+ width = charlen * xw.cw;
Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
XRenderColor colfg, colbg;
XRectangle r;
- int oneatatime;
- frcflags = FRC_NORMAL;
-
- if(base.mode & ATTR_ITALIC) {
- if(base.fg == defaultfg)
+ /* Determine foreground and background colors based on mode. */
+ if(base.fg == defaultfg) {
+ if(base.mode & ATTR_ITALIC)
base.fg = defaultitalic;
- font = &dc.ifont;
- frcflags = FRC_ITALIC;
- } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
- if(base.fg == defaultfg)
+ else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD))
base.fg = defaultitalic;
- font = &dc.ibfont;
- frcflags = FRC_ITALICBOLD;
- } else if(base.mode & ATTR_UNDERLINE) {
- if(base.fg == defaultfg)
+ else if(base.mode & ATTR_UNDERLINE)
base.fg = defaultunderline;
}
bg = &dc.col[base.bg];
}
- if(base.mode & ATTR_BOLD) {
- /*
- * change basic system colors [0-7]
- * to bright system colors [8-15]
- */
- if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT))
- fg = &dc.col[base.fg + 8];
-
- if(base.mode & ATTR_ITALIC) {
- font = &dc.ibfont;
- frcflags = FRC_ITALICBOLD;
- } else {
- font = &dc.bfont;
- frcflags = FRC_BOLD;
- }
- }
+ /* Change basic system colors [0-7] to bright system colors [8-15] */
+ if((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
+ fg = &dc.col[base.fg + 8];
if(IS_SET(MODE_REVERSE)) {
if(fg == &dc.col[defaultfg]) {
bg = temp;
}
- if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) {
+ if((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
colfg.red = fg->color.red / 2;
colfg.green = fg->color.green / 2;
colfg.blue = fg->color.blue / 2;
r.width = width;
XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
- for(xp = winx; bytelen > 0;) {
- /*
- * Search for the range in the to be printed string of glyphs
- * that are in the main font. Then print that range. If
- * some glyph is found that is not in the font, do the
- * fallback dance.
- */
- u8fs = s;
- u8fblen = 0;
- u8fl = 0;
- oneatatime = font->width != xw.cw;
- for(;;) {
- u8c = s;
- u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
- s += u8cblen;
- bytelen -= u8cblen;
-
- doesexist = XftCharExists(xw.dpy, font->match, unicodep);
- if(doesexist) {
- u8fl++;
- u8fblen += u8cblen;
- if(!oneatatime && bytelen > 0)
- continue;
- }
-
- if(u8fl > 0) {
- XftDrawStringUtf8(xw.draw, fg,
- font->match, xp,
- winy + font->ascent,
- (FcChar8 *)u8fs,
- u8fblen);
- xp += xw.cw * u8fl;
- }
- break;
- }
- if(doesexist) {
- if(oneatatime)
- continue;
- break;
- }
-
- /* Search the font cache. */
- for(i = 0; i < frclen; i++) {
- charexists = XftCharExists(xw.dpy, frc[i].font, unicodep);
- /* Everything correct. */
- if(charexists && frc[i].flags == frcflags)
- break;
- /* We got a default font for a not found glyph. */
- if(!charexists && frc[i].flags == frcflags \
- && frc[i].unicodep == unicodep) {
- break;
- }
- }
-
- /* Nothing was found. */
- if(i >= frclen) {
- if(!font->set)
- font->set = FcFontSort(0, font->pattern,
- FcTrue, 0, &fcres);
- fcsets[0] = font->set;
-
- /*
- * Nothing was found in the cache. Now use
- * some dozen of Fontconfig calls to get the
- * font for one single character.
- *
- * Xft and fontconfig are design failures.
- */
- fcpattern = FcPatternDuplicate(font->pattern);
- fccharset = FcCharSetCreate();
-
- FcCharSetAddChar(fccharset, unicodep);
- FcPatternAddCharSet(fcpattern, FC_CHARSET,
- fccharset);
- FcPatternAddBool(fcpattern, FC_SCALABLE,
- FcTrue);
-
- FcConfigSubstitute(0, fcpattern,
- FcMatchPattern);
- FcDefaultSubstitute(fcpattern);
-
- fontpattern = FcFontSetMatch(0, fcsets, 1,
- fcpattern, &fcres);
-
- /*
- * Overwrite or create the new cache entry.
- */
- if(frclen >= LEN(frc)) {
- frclen = LEN(frc) - 1;
- XftFontClose(xw.dpy, frc[frclen].font);
- frc[frclen].unicodep = 0;
- }
-
- frc[frclen].font = XftFontOpenPattern(xw.dpy,
- fontpattern);
- frc[frclen].flags = frcflags;
- frc[frclen].unicodep = unicodep;
-
- i = frclen;
- frclen++;
-
- FcPatternDestroy(fcpattern);
- FcCharSetDestroy(fccharset);
- }
-
- XftDrawStringUtf8(xw.draw, fg, frc[i].font,
- xp, winy + frc[i].font->ascent,
- (FcChar8 *)u8c, u8cblen);
-
- xp += xw.cw * wcwidth(unicodep);
- }
-
- /*
- * This is how the loop above actually should be. Why does the
- * application have to care about font details?
- *
- * I have to repeat: Xft and Fontconfig are design failures.
- */
- /*
- XftDrawStringUtf8(xw.draw, fg, font->set, winx,
- winy + font->ascent, (FcChar8 *)s, bytelen);
- */
+ /* Render the glyphs. */
+ XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
+ /* Render underline and strikethrough. */
if(base.mode & ATTR_UNDERLINE) {
- XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
+ XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
width, 1);
}
if(base.mode & ATTR_STRUCK) {
- XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3,
+ XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
width, 1);
}
void
xdrawglyph(Glyph g, int x, int y) {
- static char buf[UTF_SIZ];
- size_t len = utf8encode(g.u, buf);
- int width = g.mode & ATTR_WIDE ? 2 : 1;
-
- xdraws(buf, g, x, y, width, len);
+ int numspecs;
+ XftGlyphFontSpec spec;
+ numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
+ xdrawglyphfontspecs(&spec, g, numspecs, x, y);
}
void
void
drawregion(int x1, int y1, int x2, int y2) {
- int ic, ib, x, y, ox;
+ int i, x, y, ox, numspecs;
Glyph base, new;
- char buf[DRAW_BUF_SIZ];
+ XftGlyphFontSpec* specs;
bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
if(!(xw.state & WIN_VISIBLE))
xtermclear(0, y, term.col, y);
term.dirty[y] = 0;
- base = term.line[y][0];
- ic = ib = ox = 0;
- for(x = x1; x < x2; x++) {
+
+ specs = term.specbuf;
+ numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
+
+ i = ox = 0;
+ for(x = x1; x < x2 && i < numspecs; x++) {
new = term.line[y][x];
if(new.mode == ATTR_WDUMMY)
continue;
if(ena_sel && selected(x, y))
new.mode ^= ATTR_REVERSE;
- if(ib > 0 && (ATTRCMP(base, new)
- || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
- xdraws(buf, base, ox, y, ic, ib);
- ic = ib = 0;
+ if(i > 0 && ATTRCMP(base, new)) {
+ xdrawglyphfontspecs(specs, base, i, ox, y);
+ specs += i;
+ numspecs -= i;
+ i = 0;
}
- if(ib == 0) {
+ if(i == 0) {
ox = x;
base = new;
}
-
- ib += utf8encode(new.u, buf+ib);
- ic += (new.mode & ATTR_WIDE)? 2 : 1;
+ i++;
}
- if(ib > 0)
- xdraws(buf, base, ox, y, ic, ib);
+ if(i > 0)
+ xdrawglyphfontspecs(specs, base, i, ox, y);
}
xdrawcursor();
}
opt_class = EARGF(usage());
break;
case 'e':
- if(argc > 1)
+ if(argc > 0)
--argc, ++argv;
goto run;
case 'f':
projects / st.git / blobdiff