Wide character support. - st - Personal fork of st
(HTM) git clone git://git.drkhsh.at/st.git
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---
(DIR) commit 210dda9570095443bac887c2bfcd75f2bcc23780
(DIR) parent a4358a1fbd1c71269129404c9af4f539b2d7627c
(HTM) Author: Christoph Lohmann <20h@r-36.net>
Date: Sat, 7 Sep 2013 12:41:36 +0200
Wide character support.
Thanks "Eon S. Jeon" <esjeon@hyunmu.am>!
Diffstat:
M TODO | 1 -
M st.c | 84 +++++++++++++++++++++++++------
2 files changed, 68 insertions(+), 17 deletions(-)
---
(DIR) diff --git a/TODO b/TODO
@@ -1,7 +1,6 @@
vt emulation
------------
-* wide-character support in conjunction with fallback xft code
* double-height support
code & interface
(DIR) diff --git a/st.c b/st.c
@@ -27,6 +27,7 @@
#include <X11/keysym.h>
#include <X11/Xft/Xft.h>
#include <fontconfig/fontconfig.h>
+#include <wchar.h>
#include "arg.h"
@@ -96,6 +97,8 @@ enum glyph_attribute {
ATTR_ITALIC = 16,
ATTR_BLINK = 32,
ATTR_WRAP = 64,
+ ATTR_WIDE = 128,
+ ATTR_WDUMMY = 256,
};
enum cursor_movement {
@@ -165,7 +168,7 @@ typedef unsigned short ushort;
typedef struct {
char c[UTF_SIZ]; /* character code */
- uchar mode; /* attribute flags */
+ ushort mode; /* attribute flags */
ulong fg; /* foreground */
ulong bg; /* background */
} Glyph;
@@ -719,8 +722,13 @@ selsnap(int mode, int *x, int *y, int direction) {
}
}
+ if(term.line[*y][*x+direction].mode & ATTR_WDUMMY) {
+ *x += direction;
+ continue;
+ }
+
if(strchr(worddelimiters,
- term.line[*y][*x + direction].c[0])) {
+ term.line[*y][*x+direction].c[0])) {
break;
}
@@ -932,7 +940,7 @@ selcopy(void) {
/* nothing */;
for(x = 0; gp <= last; x++, ++gp) {
- if(!selected(x, y))
+ if(!selected(x, y) || (gp->mode & ATTR_WDUMMY))
continue;
size = utf8size(gp->c);
@@ -1533,6 +1541,16 @@ tsetchar(char *c, Glyph *attr, int x, int y) {
}
}
+ if(term.line[y][x].mode & ATTR_WIDE) {
+ if(x+1 < term.col) {
+ term.line[y][x+1].c[0] = ' ';
+ term.line[y][x+1].mode &= ~ATTR_WDUMMY;
+ }
+ } else if(term.line[y][x].mode & ATTR_WDUMMY) {
+ term.line[y][x-1].c[0] = ' ';
+ term.line[y][x-1].mode &= ~ATTR_WIDE;
+ }
+
term.dirty[y] = 1;
term.line[y][x] = *attr;
memcpy(term.line[y][x].c, c, UTF_SIZ);
@@ -2222,6 +2240,15 @@ void
tputc(char *c, int len) {
uchar ascii = *c;
bool control = ascii < '\x20' || ascii == 0177;
+ long u8char;
+ int width;
+
+ if(len == 1) {
+ width = 1;
+ } else {
+ utf8decode(c, &u8char);
+ width = wcwidth(u8char);
+ }
if(iofd != -1) {
if(xwrite(iofd, c, len) < 0) {
@@ -2469,9 +2496,20 @@ tputc(char *c, int len) {
(term.col - term.c.x - 1) * sizeof(Glyph));
}
+ if(term.c.x+width > term.col)
+ tnewline(1);
+
tsetchar(c, &term.c.attr, term.c.x, term.c.y);
- if(term.c.x+1 < term.col) {
- tmoveto(term.c.x+1, term.c.y);
+
+ if(width == 2) {
+ term.line[term.c.y][term.c.x].mode |= ATTR_WIDE;
+ if(term.c.x+1 < term.col) {
+ term.line[term.c.y][term.c.x+1].c[0] = '\0';
+ term.line[term.c.y][term.c.x+1].mode = ATTR_WDUMMY;
+ }
+ }
+ if(term.c.x+width < term.col) {
+ tmoveto(term.c.x+width, term.c.y);
} else {
term.c.state |= CURSOR_WRAPNEXT;
}
@@ -3173,7 +3211,7 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
xp, winy + frc[i].font->ascent,
(FcChar8 *)u8c, u8cblen);
- xp += xw.cw;
+ xp += xw.cw * wcwidth(u8char);
}
/*
@@ -3193,18 +3231,27 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
void
xdrawcursor(void) {
static int oldx = 0, oldy = 0;
- int sl;
+ int sl, width, curx;
Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
LIMIT(oldx, 0, term.col-1);
LIMIT(oldy, 0, term.row-1);
+ curx = term.c.x;
+
+ /* adjust position if in dummy */
+ if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
+ oldx--;
+ if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
+ curx--;
+
memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
/* remove the old cursor */
sl = utf8size(term.line[oldy][oldx].c);
+ width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
- oldy, 1, sl);
+ oldy, width, sl);
/* draw the new one */
if(!(IS_SET(MODE_HIDE))) {
@@ -3216,26 +3263,28 @@ xdrawcursor(void) {
}
sl = utf8size(g.c);
- xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
+ width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
+ ? 2 : 1;
+ xdraws(g.c, g, term.c.x, term.c.y, width, sl);
} else {
XftDrawRect(xw.draw, &dc.col[defaultcs],
- borderpx + term.c.x * xw.cw,
+ borderpx + curx * xw.cw,
borderpx + term.c.y * xw.ch,
xw.cw - 1, 1);
XftDrawRect(xw.draw, &dc.col[defaultcs],
- borderpx + term.c.x * xw.cw,
+ borderpx + curx * xw.cw,
borderpx + term.c.y * xw.ch,
1, xw.ch - 1);
XftDrawRect(xw.draw, &dc.col[defaultcs],
- borderpx + (term.c.x + 1) * xw.cw - 1,
+ borderpx + (curx + 1) * xw.cw - 1,
borderpx + term.c.y * xw.ch,
1, xw.ch - 1);
XftDrawRect(xw.draw, &dc.col[defaultcs],
- borderpx + term.c.x * xw.cw,
+ borderpx + curx * xw.cw,
borderpx + (term.c.y + 1) * xw.ch - 1,
xw.cw, 1);
}
- oldx = term.c.x, oldy = term.c.y;
+ oldx = curx, oldy = term.c.y;
}
}
@@ -3284,6 +3333,7 @@ drawregion(int x1, int y1, int x2, int y2) {
Glyph base, new;
char buf[DRAW_BUF_SIZ];
bool ena_sel = sel.ob.x != -1;
+ long u8char;
if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
ena_sel = 0;
@@ -3301,6 +3351,8 @@ drawregion(int x1, int y1, int x2, int y2) {
ic = ib = ox = 0;
for(x = x1; x < x2; 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)
@@ -3313,10 +3365,10 @@ drawregion(int x1, int y1, int x2, int y2) {
base = new;
}
- sl = utf8size(new.c);
+ sl = utf8decode(new.c, &u8char);
memcpy(buf+ib, new.c, sl);
ib += sl;
- ++ic;
+ ic += (new.mode & ATTR_WIDE)? 2 : 1;
}
if(ib > 0)
xdraws(buf, base, ox, y, ic, ib);