blob: 0b1f3ad294305b60db6ba9536fb6b16d7e28a5cc [file] [log] [blame]
// 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.
#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 {
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(); }
~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;
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