[mutter/wip/fmuellner/contraint-tiling: 2/10] window: Maximize tiled windows when resizing to work area

[Florian Müllner <fmuellner src gnome org>]

commit 0b0bc50d4103385e9e996f963be7b56570fc4afe
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 4eb79d9..ba0013f 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -6146,6 +6146,24 @@ 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,
@@ -6189,6 +6207,7 @@ 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;