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