reverse video mode. (thx Bert Münnich)

[st.git] / st.c

diff --git a/st.c b/st.c
index 65c7532..a4aca51 100644 (file)
--- a/st.c
+++ b/st.c
@@ -34,8 +34,8 @@
 #endif
 
 #define USAGE \
-       "st-" VERSION ", (c) 2010 st engineers\n" \
-       "usage: st [-t title] [-c class] [-v] [-e cmd]\n"
+       "st-" VERSION ", (c) 2010-2011 st engineers\n" \
+       "usage: st [-t title] [-c class] [-v] [-e command...]\n"
 
 /* Arbitrary sizes */
 #define ESC_TITLE_SIZ 256
@@ -53,7 +53,9 @@
 #define LIMIT(x, a, b)    (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
 #define IS_SET(flag) (term.mode & (flag))
-#define TIMEDIFFERENCE(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
+#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
+#define X2COL(x) (((x) - BORDER)/xw.cw)
+#define Y2ROW(y) (((y) - BORDER)/xw.ch)
 
 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
@@ -62,7 +64,7 @@ enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8,
-       MODE_CRLF=16, MODE_MOUSE=32 };
+       MODE_CRLF=16, MODE_MOUSE=32, MODE_REVERSE=64 };
 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
 enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
 
@@ -401,8 +403,8 @@ getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
        if(b)
                *b = e->xbutton.button;
 
-       *x = (e->xbutton.x - BORDER)/xw.cw;
-       *y = (e->xbutton.y - BORDER)/xw.ch;
+       *x = X2COL(e->xbutton.x);
+       *y = Y2ROW(e->xbutton.y);
        sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
        sel.b.y = MIN(sel.by, sel.ey);
        sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
@@ -411,8 +413,8 @@ getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
 
 void
 mousereport(XEvent *e) {
-       int x = (e->xbutton.x - BORDER)/xw.cw;
-       int y = (e->xbutton.y - BORDER)/xw.ch;
+       int x = X2COL(e->xbutton.x);
+       int y = Y2ROW(e->xbutton.y);
        int button = e->xbutton.button;
        int state = e->xbutton.state;
        char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
@@ -440,8 +442,8 @@ void
 bpress(XEvent *e) {
        mousereport(e);
        sel.mode = 1;
-       sel.ex = sel.bx = (e->xbutton.x - BORDER)/xw.cw;
-       sel.ey = sel.by = (e->xbutton.y - BORDER)/xw.ch;
+       sel.ex = sel.bx = X2COL(e->xbutton.x);
+       sel.ey = sel.by = Y2ROW(e->xbutton.y);
 }
 
 void
@@ -563,13 +565,13 @@ brelease(XEvent *e) {
                        struct timeval now;
                        gettimeofday(&now, NULL);
 
-                       if(TIMEDIFFERENCE(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
+                       if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
                                /* triple click on the line */
                                sel.b.x = sel.bx = 0;
                                sel.e.x = sel.ex = term.col;
                                sel.b.y = sel.e.y = sel.ey;
                                selcopy();
-                       } else if(TIMEDIFFERENCE(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
+                       } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
                                /* double click to select word */
                                sel.bx = sel.ex;
                                while(term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
@@ -1101,7 +1103,11 @@ csihandle(void) {
                        case 1:
                                term.mode &= ~MODE_APPKEYPAD;
                                break;
-                       case 5: /* TODO: DECSCNM -- Remove reverse video */
+                       case 5: /* DECSCNM -- Remove reverse video */
+                               if(IS_SET(MODE_REVERSE)) {
+                                       term.mode &= ~MODE_REVERSE;
+                                       draw();
+                               }
                                break;
                        case 7:
                                term.mode &= ~MODE_WRAP;
@@ -1165,7 +1171,10 @@ csihandle(void) {
                                term.mode |= MODE_APPKEYPAD;
                                break;
                        case 5: /* DECSCNM -- Reverve video */
-                               /* TODO: set REVERSE on the whole screen (f) */
+                               if(!IS_SET(MODE_REVERSE)) {
+                                       term.mode |= MODE_REVERSE;
+                                       draw();
+                               }
                                break;
                        case 7:
                                term.mode |= MODE_WRAP;
@@ -1506,7 +1515,7 @@ xloadcols(void) {
 
 void
 xclear(int x1, int y1, int x2, int y2) {
-       XSetForeground(xw.dpy, dc.gc, dc.col[DefaultBG]);
+       XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
        XFillRectangle(xw.dpy, xw.buf, dc.gc,
                       x1 * xw.cw, y1 * xw.ch,
                       (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
@@ -1630,22 +1639,28 @@ xinit(void) {
                &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
                &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
 
+       XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
        XMapWindow(xw.dpy, xw.win);
        xhints();
-       XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
        XSync(xw.dpy, 0);
 }
 
 void
 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
-       unsigned long xfg, xbg;
+       unsigned long xfg = dc.col[base.fg], xbg = dc.col[base.bg], temp;
        int winx = x*xw.cw, winy = y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
        int i;
+       
+       /* only switch default fg/bg if term is in RV mode */
+       if(IS_SET(MODE_REVERSE)) {
+               if(base.fg == DefaultFG)
+                       xfg = dc.col[DefaultBG];
+               if(base.bg == DefaultBG)
+                       xbg = dc.col[DefaultFG];
+       }
 
        if(base.mode & ATTR_REVERSE)
-               xfg = dc.col[base.bg], xbg = dc.col[base.fg];
-       else
-               xfg = dc.col[base.fg], xbg = dc.col[base.bg];
+               temp = xfg, xfg = xbg, xbg = temp;
 
        XSetBackground(xw.dpy, dc.gc, xbg);
        XSetForeground(xw.dpy, dc.gc, xfg);
@@ -1690,6 +1705,8 @@ xdrawcursor(void) {
        /* draw the new one */
        if(!(term.c.state & CURSOR_HIDE) && (xw.state & WIN_FOCUSED)) {
                sl = utf8size(g.c);
+               if(IS_SET(MODE_REVERSE))
+                       g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
                xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
                oldx = term.c.x, oldy = term.c.y;
        }
@@ -1905,17 +1922,17 @@ main(int argc, char *argv[]) {
                case 'c':
                        if(++i < argc) opt_class = argv[i];
                        break;
-               case 'e':
+               case 'e': 
+                       /* eat every remaining arguments */
                        if(++i < argc) opt_cmd = &argv[i];
-                       break;
+                       goto run;
                case 'v':
                default:
                        die(USAGE);
                }
-               /* -e eats every remaining arguments */
-               if(opt_cmd)
-                       break;
        }
+
+ run:
        setlocale(LC_CTYPE, "");
        tnew(80, 24);
        ttynew();