Added basic xterm-ish palette swap support. - st - Simple Terminal
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---
(DIR) commit 800800a3bba020f1e71e821b31c1ad037aab64ee
(DIR) parent 3865e9eaaf4e1c7820b1f41ce9d0b1d7b109fb26
(HTM) Author: Alexander Sedov <alex0player@gmail.com>
Date: Tue, 19 Feb 2013 21:39:13 +0400
Added basic xterm-ish palette swap support.
Signed-off-by: Christoph Lohmann <20h@r-36.net>
Diffstat:
st.c | 111 ++++++++++++++++++++++++++-----
1 file changed, 93 insertions(+), 18 deletions(-)
---
(DIR) diff --git a/st.c b/st.c
@@ -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);
@@ -1855,34 +1857,58 @@ 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);
- }
- break;
- case ';':
- XStoreName(xw.dpy, xw.win, strescseq.buf+1);
+ if(narg > 1)
+ XStoreName(xw.dpy, xw.win, strescseq.args[2]);
break;
- case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
+ 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;
default:
fprintf(stderr, "erresc: unknown str ");
@@ -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,