Prevents windows in chromeos from resizing bigger than their maximum size.

ash/wm/window_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/wm/window_util.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/shell.h"
 #include "ash/wm/activation_controller.h"
 #include "ash/wm/window_properties.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_delegate.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/screen.h"
 
 namespace ash {
 namespace wm {
 
 void ActivateWindow(aura::Window* window) {
   DCHECK(window);
@@ skipping 49 matching lines @@
 }
 
 bool CanMaximizeWindow(const aura::Window* window) {
   return window->GetProperty(aura::client::kCanMaximizeKey);
 }
 
 bool CanResizeWindow(const aura::Window* window) {
   return window->GetProperty(aura::client::kCanResizeKey);
 }
 
+bool CanSnapWindow(aura::Window* window) {
+  // If a window has a maximum size defined, snapping may make it too big.
+  return window->delegate()->GetMaximumSize().IsEmpty();
+}
+
 bool IsWindowNormal(const aura::Window* window) {
   return IsWindowStateNormal(window->GetProperty(aura::client::kShowStateKey));
 }
 
 bool IsWindowStateNormal(ui::WindowShowState state) {
   return state == ui::SHOW_STATE_NORMAL || state == ui::SHOW_STATE_DEFAULT;
 }
 
 bool IsWindowMaximized(const aura::Window* window) {
   return window->GetProperty(aura::client::kShowStateKey) ==
@@ skipping 108 matching lines @@
       x_offset = work_area.right() - bounds->x() - kMinimumOnScreenArea;
     } else if (bounds->right() < work_area.x()) {
       x_offset = work_area.x() - bounds->right() + kMinimumOnScreenArea;
     }
     bounds->Offset(x_offset, y_offset);
   }
 }
 
 }  // namespace wm
 }  // namespace ash