support for x11 xterm mouse reporting

1 files changed, 36 insertions, 1 deletions

diff --git a/st.c b/st.c
index 56c3c6b..65c7532 100644
--- 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 };
 
@@ -410,7 +410,35 @@ 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 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))