| // 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 "base/macros.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, possibly also filling |
| // the window with a specified backround color. 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(); |
| |
| 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_; |
| 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_| (defult is white). |
| bool size_mismatch_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ImageWindowDelegate); |
| }; |
| |
| } // namespace aura_extra |
| |
| #endif // UI_AURA_EXTRA_IMAGE_WINDOW_DELEGATE_H_ |