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// 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_
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