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// Copyright 2015 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/ash_export.h"
#include "base/macros.h"
#include "ui/aura/window.h"
#include "ui/aura/window_observer.h"
namespace ash {
// A window used to dim the child windows of the given container.
class ASH_EXPORT DimWindow : public aura::Window, public aura::WindowObserver {
public:
// Return a dim window for the container if any, or nullptr.
static DimWindow* Get(aura::Window* container);
explicit DimWindow(aura::Window* parent);
~DimWindow() override;
void SetDimOpacity(float target_opacity);
// aura::WindowObserver:
void OnWindowBoundsChanged(aura::Window* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds) override;
void OnWindowDestroying(aura::Window* window) override;
private:
aura::Window* parent_;
DISALLOW_COPY_AND_ASSIGN(DimWindow);
};
} // namespace ash
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