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patch: glyph wide support

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frosty 2024-08-19 22:53:05 +00:00
parent 2a1852f137
commit f44555609d
2 changed files with 73 additions and 66 deletions
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6
st.h
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@ -38,6 +38,12 @@ enum glyph_attribute {
ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT, ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
}; };
enum drawing_mode {
DRAW_NONE = 0,
DRAW_BG = 1 << 0,
DRAW_FG = 1 << 1,
};
enum selection_mode { enum selection_mode {
SEL_IDLE = 0, SEL_IDLE = 0,
SEL_EMPTY = 1, SEL_EMPTY = 1,

43
x.c
View file

@ -147,7 +147,7 @@ typedef struct {
static inline ushort sixd_to_16bit(int); static inline ushort sixd_to_16bit(int);
static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int); static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int); static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int, int);
static void xdrawglyph(Glyph, int, int); static void xdrawglyph(Glyph, int, int);
static void xclear(int, int, int, int); static void xclear(int, int, int, int);
static int xgeommasktogravity(int); static int xgeommasktogravity(int);
@ -1525,7 +1525,7 @@ xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x
} }
void void
xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y) xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y, int dmode)
{ {
int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1); int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
@ -1616,6 +1616,7 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
if (base.mode & ATTR_INVISIBLE) if (base.mode & ATTR_INVISIBLE)
fg = bg; fg = bg;
if (dmode & DRAW_BG) {
/* Intelligent cleaning up of the borders. */ /* Intelligent cleaning up of the borders. */
if (x == 0) { if (x == 0) {
xclear(0, (y == 0)? 0 : winy, borderpx, xclear(0, (y == 0)? 0 : winy, borderpx,
@ -1630,17 +1631,12 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
xclear(winx, 0, winx + width, borderpx); xclear(winx, 0, winx + width, borderpx);
if (winy + win.ch >= borderpx + win.th) if (winy + win.ch >= borderpx + win.th)
xclear(winx, winy + win.ch, winx + width, win.h); xclear(winx, winy + win.ch, winx + width, win.h);
/* Fill the background */
/* Clean up the region we want to draw to. */
XftDrawRect(xw.draw, bg, winx, winy, width, win.ch); XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
}
/* Set the clip region because Xft is sometimes dirty. */
r.x = 0;
r.y = 0;
r.height = win.ch;
r.width = width;
XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
if (dmode & DRAW_FG) {
if (base.mode & ATTR_BOXDRAW) { if (base.mode & ATTR_BOXDRAW) {
drawboxes(winx, winy, width / len, win.ch, fg, bg, specs, len); drawboxes(winx, winy, width / len, win.ch, fg, bg, specs, len);
} else { } else {
@ -1650,17 +1646,15 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
/* Render underline and strikethrough. */ /* Render underline and strikethrough. */
if (base.mode & ATTR_UNDERLINE) { if (base.mode & ATTR_UNDERLINE) {
XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1, XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
width, 1); width, 1);
} }
if (base.mode & ATTR_STRUCK) { if (base.mode & ATTR_STRUCK) {
XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3, XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
width, 1); width, 1);
} }
}
/* Reset clip to none. */
XftDrawSetClip(xw.draw, 0);
} }
void void
@ -1670,7 +1664,7 @@ xdrawglyph(Glyph g, int x, int y)
XftGlyphFontSpec spec; XftGlyphFontSpec spec;
numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y); numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
xdrawglyphfontspecs(&spec, g, numspecs, x, y); xdrawglyphfontspecs(&spec, g, numspecs, x, y, DRAW_BG | DRAW_FG);
} }
void void
@ -1811,11 +1805,17 @@ xstartdraw(void)
void void
xdrawline(Line line, int x1, int y1, int x2) xdrawline(Line line, int x1, int y1, int x2)
{ {
int i, x, ox, numspecs; int i, x, ox, numspecs, numspecs_cached;
Glyph base, new; Glyph base, new;
XftGlyphFontSpec *specs = xw.specbuf; XftGlyphFontSpec *specs;
numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1); numspecs_cached = xmakeglyphfontspecs(xw.specbuf, &line[x1], x2 - x1, x1, y1);
/* Draw line in 2 passes: background and foreground. This way wide glyphs
won't get truncated (#223) */
for (int dmode = DRAW_BG; dmode <= DRAW_FG; dmode <<= 1) {
specs = xw.specbuf;
numspecs = numspecs_cached;
i = ox = 0; i = ox = 0;
for (x = x1; x < x2 && i < numspecs; x++) { for (x = x1; x < x2 && i < numspecs; x++) {
new = line[x]; new = line[x];
@ -1824,7 +1824,7 @@ xdrawline(Line line, int x1, int y1, int x2)
if (selected(x, y1)) if (selected(x, y1))
new.mode ^= ATTR_REVERSE; new.mode ^= ATTR_REVERSE;
if (i > 0 && ATTRCMP(base, new)) { if (i > 0 && ATTRCMP(base, new)) {
xdrawglyphfontspecs(specs, base, i, ox, y1); xdrawglyphfontspecs(specs, base, i, ox, y1, dmode);
specs += i; specs += i;
numspecs -= i; numspecs -= i;
i = 0; i = 0;
@ -1836,7 +1836,8 @@ xdrawline(Line line, int x1, int y1, int x2)
i++; i++;
} }
if (i > 0) if (i > 0)
xdrawglyphfontspecs(specs, base, i, ox, y1); xdrawglyphfontspecs(specs, base, i, ox, y1, dmode);
}
} }
void void