| // Copyright 2015 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_TOUCH_SELECTION_TOUCH_HANDLE_DRAWABLE_AURA_H_ |
| #define UI_TOUCH_SELECTION_TOUCH_HANDLE_DRAWABLE_AURA_H_ |
| |
| #include "base/memory/raw_ptr.h" |
| #include "base/scoped_observation.h" |
| #include "ui/base/models/image_model.h" |
| #include "ui/compositor/layer_delegate.h" |
| #include "ui/native_theme/native_theme_observer.h" |
| #include "ui/touch_selection/touch_handle.h" |
| #include "ui/touch_selection/touch_handle_orientation.h" |
| #include "ui/touch_selection/ui_touch_selection_export.h" |
| |
| namespace aura { |
| class Window; |
| } |
| |
| namespace ui { |
| |
| class UI_TOUCH_SELECTION_EXPORT TouchHandleDrawableAura |
| : public TouchHandleDrawable, |
| public LayerDelegate, |
| public NativeThemeObserver { |
| public: |
| explicit TouchHandleDrawableAura(aura::Window* parent); |
| |
| TouchHandleDrawableAura(const TouchHandleDrawableAura&) = delete; |
| TouchHandleDrawableAura& operator=(const TouchHandleDrawableAura&) = delete; |
| |
| ~TouchHandleDrawableAura() override; |
| |
| private: |
| // Updates the bounds of the window containing the handle image. |
| void UpdateWindowBounds(); |
| |
| bool IsVisible() const; |
| |
| // TouchHandleDrawable: |
| void SetEnabled(bool enabled) override; |
| void SetOrientation(TouchHandleOrientation orientation, |
| bool mirror_vertical, |
| bool mirror_horizontal) override; |
| void SetOrigin(const gfx::PointF& position) override; |
| void SetAlpha(float alpha) override; |
| gfx::RectF GetVisibleBounds() const override; |
| float GetDrawableHorizontalPaddingRatio() const override; |
| |
| // LayerDelegate: |
| void OnPaintLayer(const PaintContext& context) override; |
| void OnDeviceScaleFactorChanged(float old_device_scale_factor, |
| float new_device_scale_factor) override {} |
| |
| // NativeThemeObserver: |
| void OnNativeThemeUpdated(NativeTheme* observed_theme) override; |
| |
| // The window for drawing the handle image. This doesn't include invisible |
| // padding which is applied around the handle image. |
| std::unique_ptr<aura::Window> window_; |
| |
| bool enabled_; |
| |
| // Used to set the opacity of the handle drawable. The actual handle opacity |
| // is further scaled by a max opacity value (since the handle can be slightly |
| // transparent by default). |
| float alpha_; |
| TouchHandleOrientation orientation_; |
| |
| // The origin of the targetable area of the touch handle, in coordinates of |
| // the handle window's parent. When drawing the handle image, an additional |
| // offset should be applied to this origin to account for invisible padding. |
| gfx::PointF targetable_origin_; |
| |
| // The handle image to draw. |
| ImageModel handle_image_; |
| |
| base::ScopedObservation<NativeTheme, NativeThemeObserver> theme_observation_{ |
| this}; |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_TOUCH_SELECTION_TOUCH_HANDLE_DRAWABLE_AURA_H_ |