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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef ASH_COMMON_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_ | |
6 #define ASH_COMMON_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_ | |
7 | |
8 #include "ash/ash_export.h" | |
9 #include "ash/common/wm_layout_manager.h" | |
10 #include "base/macros.h" | |
11 | |
12 namespace ash { | |
13 namespace wm { | |
14 | |
15 // A layout manager that places children's layer at the physical pixel | |
16 // boundaries. | |
17 class ASH_EXPORT WmSnapToPixelLayoutManager : public WmLayoutManager { | |
18 public: | |
19 WmSnapToPixelLayoutManager(); | |
20 ~WmSnapToPixelLayoutManager() override; | |
21 | |
22 // Sets WmSnapToPixelLayoutManager as the LayoutManager on the appropriate | |
23 // descendants of |window|. | |
24 static void InstallOnContainers(WmWindow* window); | |
25 | |
26 protected: | |
27 // Overridden from aura::LayoutManager: | |
28 void OnWindowResized() override; | |
29 void OnWindowAddedToLayout(WmWindow* child) override; | |
30 void OnWillRemoveWindowFromLayout(WmWindow* child) override; | |
31 void OnWindowRemovedFromLayout(WmWindow* child) override; | |
32 void OnChildWindowVisibilityChanged(WmWindow* child, bool visibile) override; | |
33 void SetChildBounds(WmWindow* child, | |
34 const gfx::Rect& requested_bounds) override; | |
35 | |
36 private: | |
37 DISALLOW_COPY_AND_ASSIGN(WmSnapToPixelLayoutManager); | |
38 }; | |
39 | |
40 } // namespace wm | |
41 } // namespace ash | |
42 | |
43 #endif // ASH_COMMON_WM_WM_SNAP_TO_PIXEL_LAYOUT_MANAGER_H_ | |
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