[vte] emulation: Report middle mouse button release

[Egmont Koblinger <egmontkob src gnome org>]

commit 01d7eb0388b8215df5bed6165b519e03ca4e040b
Author: Egmont Koblinger <egmont gmail com>
Date:   Fri Feb 27 11:59:19 2015 +0100

    emulation: Report middle mouse button release
    
    https://bugzilla.gnome.org/show_bug.cgi?id=745131

 src/vte-private.h |    1 +
 src/vte.c         |   11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/src/vte-private.h b/src/vte-private.h
index e05216f..c5c1fcd 100644
--- a/src/vte-private.h
+++ b/src/vte-private.h
@@ -358,6 +358,7 @@ struct _VteTerminalPrivate {
        int mouse_tracking_mode; /* this is of type MouseTrackingMode,
                                    but we need to guarantee its type. */
         guint mouse_pressed_buttons;      /* bits 0, 1, 2 resp. for buttons 1, 2, 3 */
+        guint mouse_handled_buttons;      /* similar bitmap for buttons we handled ourselves */
        long mouse_last_x, mouse_last_y;
        gboolean mouse_autohide;
        guint mouse_autoscroll_tag;
diff --git a/src/vte.c b/src/vte.c
index 465f632..e0f017a 100644
--- a/src/vte.c
+++ b/src/vte.c
@@ -7199,6 +7199,12 @@ vte_terminal_button_press(GtkWidget *widget, GdkEventButton *event)
                default:
                        break;
                }
+                if (event->button >= 1 && event->button <= 3) {
+                        if (handled)
+                                terminal->pvt->mouse_handled_buttons |= (1 << (event->button - 1));
+                        else
+                                terminal->pvt->mouse_handled_buttons &= ~(1 << (event->button - 1));
+                }
                /* If we haven't done anything yet, try sending the mouse
                 * event to the app. */
                if (handled == FALSE) {
@@ -7296,7 +7302,8 @@ vte_terminal_button_release(GtkWidget *widget, GdkEventButton *event)
                        handled = _vte_terminal_maybe_end_selection (terminal);
                        break;
                case 2:
-                       handled = TRUE;
+                        handled = (terminal->pvt->mouse_handled_buttons & 2) != 0;
+                        terminal->pvt->mouse_handled_buttons &= ~2;
                        break;
                case 3:
                default:
@@ -7373,6 +7380,7 @@ vte_terminal_focus_out(GtkWidget *widget, GdkEventFocus *event)
                /* Mark the cursor as invisible to disable hilite updating */
                terminal->pvt->mouse_cursor_visible = FALSE;
                 terminal->pvt->mouse_pressed_buttons = 0;
+                terminal->pvt->mouse_handled_buttons = 0;
        }
 
        terminal->pvt->has_focus = FALSE;
@@ -11964,6 +11972,7 @@ vte_terminal_reset(VteTerminal *terminal,
        /* Reset mouse motion events. */
        pvt->mouse_tracking_mode = MOUSE_TRACKING_NONE;
         pvt->mouse_pressed_buttons = 0;
+        pvt->mouse_handled_buttons = 0;
        pvt->mouse_last_x = 0;
        pvt->mouse_last_y = 0;
        pvt->mouse_xterm_extension = FALSE;