From f82370e12ebfa55f0458a26dc2a1c500347185a3 Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Wed, 23 Jan 2013 22:59:17 +0000
Subject: [PATCH] Patch from Egmont Koblinger to implement two extended
 variants of xterm mouse tracking, both supported by the current up-to-date
 xterm (288). They take the form of two new DEC terminal modes, 1006 and 1015,
 which do not in themselves _enable_ mouse tracking but they modify the escape
 sequences sent if mouse tracking is enabled in the usual way.

git-svn-id: svn://svn.tartarus.org/sgt/putty@9752 cda61777-01e9-0310-a592-d414129be87e
---
 terminal.c | 42 ++++++++++++++++++++++++++++++------------
 terminal.h |  2 ++
 2 files changed, 32 insertions(+), 12 deletions(-)

diff --git a/terminal.c b/terminal.c
index a29645a0..171db039 100644
--- a/terminal.c
+++ b/terminal.c
@@ -1224,6 +1224,8 @@ static void power_on(Terminal *term, int clear)
     term->alt_which = 0;
     term_print_finish(term);
     term->xterm_mouse = 0;
+    term->xterm_extended_mouse = 0;
+    term->urxvt_extended_mouse = 0;
     set_raw_mouse_mode(term->frontend, FALSE);
     term->bracketed_paste = FALSE;
     {
@@ -2491,6 +2493,12 @@ static void toggle_mode(Terminal *term, int mode, int query, int state)
 	    term->xterm_mouse = state ? 2 : 0;
 	    set_raw_mouse_mode(term->frontend, state);
 	    break;
+	  case 1006:		       /* xterm extended mouse */
+	    term->xterm_extended_mouse = state ? 1 : 0;
+	    break;
+	  case 1015:		       /* urxvt extended mouse */
+	    term->urxvt_extended_mouse = state ? 1 : 0;
+	    break;
 	  case 1047:                   /* alternate screen */
 	    compatibility(OTHER);
 	    deselect(term);
@@ -5818,25 +5826,26 @@ void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
     if (raw_mouse &&
 	(term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
 	int encstate = 0, r, c;
-	char abuf[16];
+	char abuf[32];
+	int len = 0;
 
 	if (term->ldisc) {
 
 	    switch (braw) {
 	      case MBT_LEFT:
-		encstate = 0x20;	       /* left button down */
+		encstate = 0x00;	       /* left button down */
 		break;
 	      case MBT_MIDDLE:
-		encstate = 0x21;
+		encstate = 0x01;
 		break;
 	      case MBT_RIGHT:
-		encstate = 0x22;
+		encstate = 0x02;
 		break;
 	      case MBT_WHEEL_UP:
-		encstate = 0x60;
+		encstate = 0x40;
 		break;
 	      case MBT_WHEEL_DOWN:
-		encstate = 0x61;
+		encstate = 0x41;
 		break;
 	      default: break;	       /* placate gcc warning about enum use */
 	    }
@@ -5847,7 +5856,9 @@ void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
 		encstate += 0x20;
 		break;
 	      case MA_RELEASE:
-		encstate = 0x23;
+		/* If multiple extensions are enabled, the xterm 1006 is used, so it's okay to check for only that */
+		if (!term->xterm_extended_mouse)
+		    encstate = 0x03;
 		term->mouse_is_down = 0;
 		break;
 	      case MA_CLICK:
@@ -5861,11 +5872,18 @@ void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
 		encstate += 0x04;
 	    if (ctrl)
 		encstate += 0x10;
-	    r = y + 33;
-	    c = x + 33;
-
-	    sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
-	    ldisc_send(term->ldisc, abuf, 6, 0);
+	    r = y + 1;
+	    c = x + 1;
+
+	    /* Check the extensions in decreasing order of preference. Encoding the release event above assumes that 1006 comes first. */
+	    if (term->xterm_extended_mouse) {
+		len = sprintf(abuf, "\033[<%d;%d;%d%c", encstate, c, r, a == MA_RELEASE ? 'm' : 'M');
+	    } else if (term->urxvt_extended_mouse) {
+		len = sprintf(abuf, "\033[%d;%d;%dM", encstate + 32, c, r);
+	    } else if (c <= 223 && r <= 223) {
+		len = sprintf(abuf, "\033[M%c%c%c", encstate + 32, c + 32, r + 32);
+	    }
+	    ldisc_send(term->ldisc, abuf, len, 0);
 	}
 	return;
     }
diff --git a/terminal.h b/terminal.h
index 5c9658b8..14e797b0 100644
--- a/terminal.h
+++ b/terminal.h
@@ -152,6 +152,8 @@ struct terminal_tag {
     int big_cursor;
 
     int xterm_mouse;		       /* send mouse messages to host */
+    int xterm_extended_mouse;
+    int urxvt_extended_mouse;
     int mouse_is_down;		       /* used while tracking mouse buttons */
 
     int bracketed_paste;
-- 
2.11.0