| // Copyright 2013 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. |
| |
| #ifndef CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_ |
| #define CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "ui/compositor/layer_delegate.h" |
| #include "ui/gfx/rect.h" |
| |
| namespace aura { |
| class Window; |
| } |
| |
| namespace ui { |
| class Layer; |
| } |
| |
| namespace views { |
| class View; |
| } |
| |
| namespace chromeos { |
| |
| // FocusRingLayer draws a focus ring for a given view. |
| class FocusRingLayer : public ui::LayerDelegate { |
| public: |
| FocusRingLayer(); |
| virtual ~FocusRingLayer(); |
| |
| // Create the layer and update its bounds and position in the hierarchy. |
| void Update(); |
| |
| // Updates the focus ring layer for the view or clears it if |view| is NULL. |
| void SetForView(views::View* view); |
| |
| private: |
| // ui::LayerDelegate overrides: |
| virtual void OnPaintLayer(gfx::Canvas* canvas) OVERRIDE; |
| virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE; |
| virtual base::Closure PrepareForLayerBoundsChange() OVERRIDE; |
| |
| // The window containing focus. |
| aura::Window* window_; |
| |
| // The current root window containing the focused object. |
| aura::Window* root_window_; |
| |
| // The bounding rectangle of the focused object, in |window_| coordinates. |
| gfx::Rect focus_ring_; |
| |
| // The current layer. |
| scoped_ptr<ui::Layer> layer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FocusRingLayer); |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_UI_FOCUS_RING_LAYER_H_ |