| // Copyright 2018 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 ASH_PUBLIC_CPP_ROUNDED_CORNER_DECORATOR_H_ |
| #define ASH_PUBLIC_CPP_ROUNDED_CORNER_DECORATOR_H_ |
| |
| #include <memory> |
| |
| #include "ash/public/cpp/ash_public_export.h" |
| #include "ui/aura/window_observer.h" |
| #include "ui/compositor/layer.h" |
| #include "ui/compositor/layer_delegate.h" |
| #include "ui/compositor/layer_observer.h" |
| #include "ui/gfx/geometry/size.h" |
| |
| namespace ash { |
| |
| constexpr int kPipRoundedCornerRadius = 8; |
| |
| // Applies rounded corners to the given layer, and modifies the shadow of |
| // the given window to be rounded. |
| class ASH_PUBLIC_EXPORT RoundedCornerDecorator : public ui::LayerDelegate, |
| public ui::LayerObserver, |
| public aura::WindowObserver { |
| public: |
| RoundedCornerDecorator(aura::Window* shadow_window, |
| aura::Window* layer_window, |
| ui::Layer* layer, |
| int radius); |
| ~RoundedCornerDecorator() override; |
| |
| // Returns true if the rounded corner decorator is still applied to a valid |
| // layer. |
| bool IsValid(); |
| |
| // ui::LayerDelegate: |
| void OnPaintLayer(const ui::PaintContext& context) override; |
| void OnDeviceScaleFactorChanged(float old_device_scale_factor, |
| float new_device_scale_factor) override {} |
| |
| // ui::LayerObserver: |
| void LayerDestroyed(ui::Layer* layer) override; |
| |
| // aura::WindowObserver: |
| void OnWindowBoundsChanged(aura::Window* window, |
| const gfx::Rect& old_bounds, |
| const gfx::Rect& new_bounds, |
| ui::PropertyChangeReason reason) override; |
| void OnWindowDestroying(aura::Window* window) override; |
| |
| private: |
| void Update(const gfx::Size& size); |
| void Shutdown(); |
| |
| aura::Window* layer_window_; |
| ui::Layer* layer_; |
| std::unique_ptr<ui::Layer> mask_layer_; |
| int radius_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RoundedCornerDecorator); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_PUBLIC_CPP_ROUNDED_CORNER_DECORATOR_H_ |