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Added basic xterm-ish palette swap support.

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Signed-off-by: Christoph Lohmann <20h@r-36.net>
This commit is contained in:
Alexander Sedov 2013-02-19 21:39:13 +04:00 committed by Christoph Lohmann
parent 3865e9eaaf
commit 800800a3bb
1 changed files with 93 additions and 18 deletions
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111
st.c
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@ -302,6 +302,7 @@ static void execsh(void);
static void sigchld(int);
static void run(void);
static inline int parse_int(char *);
static void csidump(void);
static void csihandle(void);
static void csiparse(void);
@ -348,6 +349,7 @@ static void xclear(int, int, int, int);
static void xdrawcursor(void);
static void xinit(void);
static void xloadcols(void);
static int xsetcolorname(int, const char *);
static int xloadfont(Font *, FcPattern *);
static void xloadfonts(char *, int);
static void xresettitle(void);
@ -1855,35 +1857,59 @@ csireset(void) {
memset(&csiescseq, 0, sizeof(csiescseq));
}
inline int
parse_int(char *s) {
int x = 0;
char c;
while(isdigit(c = *s)) {
if((INT_MAX - c + '0') / 10 >= x) {
x = x * 10 + c - '0';
} else
return -1;
s++;
}
if(*s != '\0')
return -1;
return x;
}
void
strhandle(void) {
char *p;
char *p = NULL;
int i, j;
int narg;
/*
* TODO: make this being useful in case of color palette change.
*/
strparse();
p = strescseq.buf;
narg = strescseq.narg;
switch(strescseq.type) {
case ']': /* OSC -- Operating System Command */
switch(p[0]) {
case '0':
case '1':
case '2':
switch(i = parse_int(strescseq.args[0])) {
case 0:
case 1:
case 2:
/*
* TODO: Handle special chars in string, like umlauts.
*/
if(p[1] == ';') {
XStoreName(xw.dpy, xw.win, strescseq.buf+2);
if(narg > 1)
XStoreName(xw.dpy, xw.win, strescseq.args[2]);
break;
case 4: /* color set */
if(narg < 3)
break;
p = strescseq.args[2];
/* fall through */
case 104: /* color reset, here p = NULL */
j = (narg > 1) ? parse_int(strescseq.args[1]) : -1;
if (!xsetcolorname(j, p))
fprintf(stderr, "erresc: invalid color %s\n", p);
else {
redraw(0); /* TODO if defaultbg color is changed, borders are dirty */
}
break;
case ';':
XStoreName(xw.dpy, xw.win, strescseq.buf+1);
break;
case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
break;
default:
fprintf(stderr, "erresc: unknown str ");
strdump();
@ -1910,7 +1936,19 @@ strparse(void) {
* TODO: Implement parsing like for CSI when required.
* Format: ESC type cmd ';' arg0 [';' argn] ESC \
*/
return;
int narg = 0;
char *start = strescseq.buf, *end = start + strescseq.len;
strescseq.args[0] = start;
while(start < end && narg < LEN(strescseq.args)) {
start = memchr(start, ';', end - start);
if(!start)
break;
*start++ = '\0';
if(start < end) {
strescseq.args[++narg] = start;
}
}
strescseq.narg = narg + 1;
}
void
@ -2325,6 +2363,11 @@ xresize(int col, int row) {
XftDrawChange(xw.draw, xw.buf);
}
static inline ushort
sixd_to_16bit(int x) {
return x == 0 ? 0 : 0x3737 + 0x2828 * x;
}
void
xloadcols(void) {
int i, r, g, b;
@ -2343,9 +2386,9 @@ xloadcols(void) {
for(i = 16, r = 0; r < 6; r++) {
for(g = 0; g < 6; g++) {
for(b = 0; b < 6; b++) {
color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
color.red = sixd_to_16bit(r);
color.green = sixd_to_16bit(g);
color.blue = sixd_to_16bit(b);
if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
die("Could not allocate color %d\n", i);
}
@ -2363,6 +2406,38 @@ xloadcols(void) {
}
}
int
xsetcolorname(int x, const char *name) {
XRenderColor color = { .alpha = 0xffff };
Colour colour;
if (x < 0 || x > LEN(colorname))
return -1;
if(!name) {
if(16 <= x && x < 16 + 216) {
int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
color.red = sixd_to_16bit(r);
color.green = sixd_to_16bit(g);
color.blue = sixd_to_16bit(b);
if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
return 0; /* something went wrong */
dc.col[x] = colour;
return 1;
} else if (16 + 216 <= x && x < 256) {
color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
return 0; /* something went wrong */
dc.col[x] = colour;
return 1;
} else {
name = colorname[x];
}
}
if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
return 0;
dc.col[x] = colour;
return 1;
}
void
xtermclear(int col1, int row1, int col2, int row2) {
XftDrawRect(xw.draw,