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- // Copyright (c) 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 UI_AURA_EXTRA_IMAGE_WINDOW_DELEGATE_H_
- #define UI_AURA_EXTRA_IMAGE_WINDOW_DELEGATE_H_
- #include "third_party/skia/include/core/SkColor.h"
- #include "ui/aura/window_delegate.h"
- #include "ui/aura_extra/aura_extra_export.h"
- #include "ui/gfx/geometry/size.h"
- #include "ui/gfx/geometry/vector2d.h"
- #include "ui/gfx/image/image.h"
- namespace aura_extra {
- // An ImageWindowDelegate paints an image for a Window. If there is uncovered
- // area, it also fills the window with a background color when specified.
- // The delegate does not consume any event.
- //
- // The delegate destroys itself when the Window is destroyed. This is done in
- // |OnWindowDestroyed()| function which subclasses can override to prevent
- // self-destroying.
- class AURA_EXTRA_EXPORT ImageWindowDelegate : public aura::WindowDelegate {
- public:
- ImageWindowDelegate();
- ImageWindowDelegate(const ImageWindowDelegate&) = delete;
- ImageWindowDelegate& operator=(const ImageWindowDelegate&) = delete;
- void SetImage(const gfx::Image& image);
- void set_background_color(SkColor color) { background_color_ = color; }
- void set_image_offset(const gfx::Vector2d& offset) { offset_ = offset; }
- bool has_image() const { return !image_.IsEmpty(); }
- protected:
- ~ImageWindowDelegate() override;
- // Overridden from aura::WindowDelegate:
- gfx::Size GetMinimumSize() const override;
- gfx::Size GetMaximumSize() const override;
- void OnBoundsChanged(const gfx::Rect& old_bounds,
- const gfx::Rect& new_bounds) override;
- gfx::NativeCursor GetCursor(const gfx::Point& point) override;
- int GetNonClientComponent(const gfx::Point& point) const override;
- bool ShouldDescendIntoChildForEventHandling(
- aura::Window* child,
- const gfx::Point& location) override;
- bool CanFocus() override;
- void OnCaptureLost() override;
- void OnPaint(const ui::PaintContext& context) override;
- void OnDeviceScaleFactorChanged(float old_device_scale_factor,
- float new_device_scale_factor) override;
- void OnWindowDestroying(aura::Window* window) override;
- void OnWindowDestroyed(aura::Window* window) override;
- void OnWindowTargetVisibilityChanged(bool visible) override;
- bool HasHitTestMask() const override;
- void GetHitTestMask(SkPath* mask) const override;
- protected:
- SkColor background_color_ = SK_ColorTRANSPARENT;
- gfx::Image image_;
- gfx::Vector2d offset_;
- gfx::Size window_size_;
- // Keeps track of whether the window size matches the image size or not. If
- // the image size is smaller than the window size, then the delegate fills the
- // missing regions with |background_color_| (default is transparent).
- bool size_mismatch_ = false;
- };
- } // namespace aura_extra
- #endif // UI_AURA_EXTRA_IMAGE_WINDOW_DELEGATE_H_
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