Add RGB color definition

[st.git] / st.c

diff --git a/st.c b/st.c
index 947373f..097244c 100644 (file)
--- a/st.c
+++ b/st.c
@@ -77,6 +77,13 @@ char *argv0;
 #define IS_SET(flag) ((term.mode & (flag)) != 0)
 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
 
+#define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
+#define IS_TRUECOL(x)    (1 << 24 & (x))
+#define TRUERED(x)       (((x) & 0xff0000) >> 8)
+#define TRUEGREEN(x)     (((x) & 0xff00))
+#define TRUEBLUE(x)      (((x) & 0xff) << 8)
+
+
 #define VT102ID "\033[?6c"
 
 enum glyph_attribute {
@@ -158,8 +165,8 @@ typedef unsigned short ushort;
 typedef struct {
        char c[UTF_SIZ]; /* character code */
        uchar mode;      /* attribute flags */
-       ushort fg;       /* foreground  */
-       ushort bg;       /* background  */
+       ulong fg;        /* foreground  */
+       ulong bg;        /* background  */
 } Glyph;
 
 typedef Glyph *Line;
@@ -354,7 +361,7 @@ static void tsetdirtattr(int);
 static void tsetmode(bool, bool, int *, int);
 static void tfulldirt(void);
 static void techo(char *, int);
-
+static ulong tdefcolor(int *, int *, int);
 static inline bool match(uint, uint);
 static void ttynew(void);
 static void ttyread(void);
@@ -1618,9 +1625,58 @@ tdeleteline(int n) {
        tscrollup(term.c.y, n);
 }
 
+ulong
+tdefcolor(int *attr, int *npar, int l) {
+       long idx = -1;
+       uint r, g, b;
+
+       switch (attr[*npar + 1]) {
+       case 2: /* direct colour in RGB space */
+               if (*npar + 4 >= l) {
+                       fprintf(stderr,
+                               "erresc(38): Incorrect number of parameters (%d)\n",
+                               *npar);
+                       break;
+               }
+               r = attr[*npar + 2];
+               g = attr[*npar + 3];
+               b = attr[*npar + 4];
+               *npar += 4;
+               if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
+                       fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
+                               r, g, b);
+               else
+                       idx = TRUECOLOR(r, g, b);
+               break;
+       case 5: /* indexed colour */
+               if (*npar + 2 >= l) {
+                       fprintf(stderr,
+                               "erresc(38): Incorrect number of parameters (%d)\n",
+                               *npar);
+                       break;
+               }
+               *npar += 2;
+               if(!BETWEEN(attr[*npar], 0, 255))
+                       fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
+               else
+                       idx = attr[*npar];
+               break;
+       case 0: /* implemented defined (only foreground) */
+       case 1: /* transparent */
+       case 3: /* direct colour in CMY space */
+       case 4: /* direct colour in CMYK space */
+       default:
+               fprintf(stderr,
+                       "erresc(38): gfx attr %d unknown\n", attr[*npar]);
+       }
+
+       return idx;
+}
+
 void
 tsetattr(int *attr, int l) {
        int i;
+       ulong idx;
 
        for(i = 0; i < l; i++) {
                switch(attr[i]) {
@@ -1665,39 +1721,15 @@ tsetattr(int *attr, int l) {
                        term.c.attr.mode &= ~ATTR_REVERSE;
                        break;
                case 38:
-                       if(i + 2 < l && attr[i + 1] == 5) {
-                               i += 2;
-                               if(BETWEEN(attr[i], 0, 255)) {
-                                       term.c.attr.fg = attr[i];
-                               } else {
-                                       fprintf(stderr,
-                                               "erresc: bad fgcolor %d\n",
-                                               attr[i]);
-                               }
-                       } else {
-                               fprintf(stderr,
-                                       "erresc(38): gfx attr %d unknown\n",
-                                       attr[i]);
-                       }
+                       if ((idx = tdefcolor(attr, &i, l)) >= 0)
+                               term.c.attr.fg = idx;
                        break;
                case 39:
                        term.c.attr.fg = defaultfg;
                        break;
                case 48:
-                       if(i + 2 < l && attr[i + 1] == 5) {
-                               i += 2;
-                               if(BETWEEN(attr[i], 0, 255)) {
-                                       term.c.attr.bg = attr[i];
-                               } else {
-                                       fprintf(stderr,
-                                               "erresc: bad bgcolor %d\n",
-                                               attr[i]);
-                               }
-                       } else {
-                               fprintf(stderr,
-                                       "erresc(48): gfx attr %d unknown\n",
-                                       attr[i]);
-                       }
+                       if ((idx = tdefcolor(attr, &i, l)) >= 0)
+                               term.c.attr.bg = idx;
                        break;
                case 49:
                        term.c.attr.bg = defaultbg;
@@ -2916,7 +2948,7 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
        FcPattern *fcpattern, *fontpattern;
        FcFontSet *fcsets[] = { NULL };
        FcCharSet *fccharset;
-       Colour *fg, *bg, *temp, revfg, revbg;
+       Colour *fg, *bg, *temp, revfg, revbg, truefg, truebg;
        XRenderColor colfg, colbg;
        Rectangle r;
 
@@ -2936,8 +2968,27 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
                if(base.fg == defaultfg)
                        base.fg = defaultunderline;
        }
-       fg = &dc.col[base.fg];
-       bg = &dc.col[base.bg];
+       if(IS_TRUECOL(base.fg)) {
+               colfg.red = TRUERED(base.fg);
+               colfg.green = TRUEGREEN(base.fg);
+               colfg.blue = TRUEBLUE(base.fg);
+               XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
+               fg = &truefg;
+       } else {
+               fg = &dc.col[base.fg];
+       }
+
+       if(IS_TRUECOL(base.bg)) {
+               colbg.green = TRUEGREEN(base.bg);
+               colbg.red = TRUERED(base.bg);
+               colbg.blue = TRUEBLUE(base.bg);
+               XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
+               bg = &truebg;
+       } else {
+               bg = &dc.col[base.bg];
+       }
+
+
 
        if(base.mode & ATTR_BOLD) {
                if(BETWEEN(base.fg, 0, 7)) {