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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, 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(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;
ui::TextInputClient* GetFocusedTextInputClient() 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(gfx::Canvas* canvas) override;
void OnDeviceScaleFactorChanged(float 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(gfx::Path* 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_
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