[mutter/wip/fmuellner/contraint-tiling: 6/15] window: Maximize tiled windows when resizing to work area

[Florian Müllner <fmuellner src gnome org>]

commit c580a3c918575acddce2bb159f852eed0d928943
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Jun 11 14:58:21 2017 -0300

    window: Maximize tiled windows when resizing to work area
    
    Now that tiled windows are resizable, the user may grow a tiled
    windows until it covers the entire work area. As this makes the
    window state mostly indistinguishable from maximization, avoid
    subtle differences by properly maximizing the window in that case.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=645153

 src/core/window.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)
---
diff --git a/src/core/window.c b/src/core/window.c
index 723704b..de418f2 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -6141,6 +6141,24 @@ update_resize (MetaWindow *window,
     g_get_current_time (&window->display->grab_last_moveresize_time);
 }
 
+static void
+maybe_maximize_tiled_window (MetaWindow *window)
+{
+  MetaRectangle work_area;
+  gint shake_threshold;
+
+  if (!META_WINDOW_TILED_SIDE_BY_SIDE (window))
+    return;
+
+  shake_threshold = meta_prefs_get_drag_threshold ();
+
+  meta_window_get_work_area_for_monitor (window,
+                                         window->tile_monitor_number,
+                                         &work_area);
+  if (window->rect.width >= work_area.width - shake_threshold)
+    meta_window_maximize (window, META_MAXIMIZE_BOTH);
+}
+
 void
 meta_window_update_resize (MetaWindow *window,
                            gboolean    snap,
@@ -6184,6 +6202,7 @@ end_grab_op (MetaWindow *window,
                          modifiers & CLUTTER_SHIFT_MASK,
                          x, y,
                          TRUE);
+          maybe_maximize_tiled_window (window);
         }
     }
   window->screen->preview_tile_mode = META_TILE_NONE;