Merge lp:~3v1n0/unity/panel-restore-button-partially-unmaximize into lp:unity

[Marco Trevisan (Treviño)]

WindowButton: properly partially unmaximize a window when middle/left clicking in the restore button

[Andrea Azzarone (azzar1)]

Thanks

review: Approve

=== modified file 'unity-shared/WindowButtons.cpp'
--- unity-shared/WindowButtons.cpp	2016-03-07 18:37:24 +0000
+++ unity-shared/WindowButtons.cpp	2016-08-24 11:27:24 +0000
@@ -420,10 +420,23 @@
   {
     WindowManager& wm = WindowManager::Default();
     Window to_restore = controlled_window();
+    int button = nux::GetGraphicsDisplay()->GetCurrentEvent().GetEventButton();
 
     wm.Raise(to_restore);
     wm.Activate(to_restore);
-    wm.Restore(to_restore);
+
+    if (button == nux::NUX_MOUSE_BUTTON1)
+    {
+      wm.Restore(to_restore);
+    }
+    else if (button == nux::NUX_MOUSE_BUTTON2)
+    {
+      wm.VerticallyMaximize(to_restore);
+    }
+    else if (button == nux::NUX_MOUSE_BUTTON3)
+    {
+      wm.HorizontallyMaximize(to_restore);
+    }
   }
 
   restore_clicked.emit();