support for x11 xterm mouse reporting

diff --git a/st.c b/st.c
index 56c3c6b..65c7532 100644 (file)
--- a/st.c
+++ b/st.c
@@ -62,7 +62,7 @@ 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_CRLF=16, MODE_MOUSE=32 };
 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 };
 
@@ -409,8 +409,36 @@ getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
        sel.e.y = MAX(sel.by, sel.ey);
 }
 
+void
+mousereport(XEvent *e) {
+       int x = (e->xbutton.x - BORDER)/xw.cw;
+       int y = (e->xbutton.y - BORDER)/xw.ch;
+       int button = e->xbutton.button;
+       int state = e->xbutton.state;
+       char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
+       
+       if(!IS_SET(MODE_MOUSE))
+               return;
+       
+       /* from urxvt */
+       if(e->xbutton.type == ButtonRelease || button == AnyButton)
+               button = 3;
+       else {
+               button -= Button1;
+               if(button >= 3)
+                       button += 64 - 3;
+       }
+       
+       buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
+               + (state & Mod4Mask    ? 8  : 0)
+               + (state & ControlMask ? 16 : 0);
+       
+       ttywrite(buf, sizeof(buf));
+}
+
 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;
@@ -526,6 +554,7 @@ brelease(XEvent *e) {
 
        sel.mode = 0;
        getbuttoninfo(e, &b, &sel.ex, &sel.ey);
+       mousereport(e);
        if(sel.bx == sel.ex && sel.by == sel.ey) {
                sel.bx = -1;
                if(b == 2)
@@ -1085,6 +1114,9 @@ csihandle(void) {
                        case 25:
                                term.c.state |= CURSOR_HIDE;
                                break;
+                       case 1000: /* disable X11 xterm mouse reporting */
+                               term.mode &= ~MODE_MOUSE;
+                               break;
                        case 1049: /* = 1047 and 1048 */
                        case 1047:
                                if(IS_SET(MODE_ALTSCREEN)) {
@@ -1148,6 +1180,9 @@ csihandle(void) {
                        case 25:
                                term.c.state &= ~CURSOR_HIDE;
                                break;
+                       case 1000: /* enable X11 xterm mouse reporting */
+                               term.mode |= MODE_MOUSE;
+                               break;
                        case 1049: /* = 1047 and 1048 */
                        case 1047:
                                if(IS_SET(MODE_ALTSCREEN))