1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_WEB_CONTENTS_AURA_IMAGE_WINDOW_DELEGATE_H_ 6 #define CONTENT_BROWSER_WEB_CONTENTS_AURA_IMAGE_WINDOW_DELEGATE_H_ 7 8 #include "content/common/content_export.h" 9 #include "ui/aura/window_delegate.h" 10 #include "ui/gfx/image/image.h" 11 #include "ui/gfx/size.h" 12 13 namespace content { 14 15 // An ImageWindowDelegate paints an image for a Window. The delegate destroys 16 // itself when the Window is destroyed. The delegate does not consume any event. 17 class CONTENT_EXPORT ImageWindowDelegate : public aura::WindowDelegate { 18 public: 19 ImageWindowDelegate(); 20 21 void SetImage(const gfx::Image& image); 22 bool has_image() const { return !image_.IsEmpty(); } 23 24 protected: 25 virtual ~ImageWindowDelegate(); 26 27 // Overridden from aura::WindowDelegate: 28 virtual gfx::Size GetMinimumSize() const OVERRIDE; 29 virtual gfx::Size GetMaximumSize() const OVERRIDE; 30 virtual void OnBoundsChanged(const gfx::Rect& old_bounds, 31 const gfx::Rect& new_bounds) OVERRIDE; 32 virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE; 33 virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE; 34 virtual bool ShouldDescendIntoChildForEventHandling( 35 aura::Window* child, 36 const gfx::Point& location) OVERRIDE; 37 virtual bool CanFocus() OVERRIDE; 38 virtual void OnCaptureLost() OVERRIDE; 39 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; 40 virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE; 41 virtual void OnWindowDestroying(aura::Window* window) OVERRIDE; 42 virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE; 43 virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE; 44 virtual bool HasHitTestMask() const OVERRIDE; 45 virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE; 46 47 protected: 48 gfx::Image image_; 49 gfx::Size window_size_; 50 51 // Keeps track of whether the window size matches the image size or not. If 52 // the image size is smaller than the window size, then the delegate paints a 53 // white background for the missing regions. 54 bool size_mismatch_; 55 56 DISALLOW_COPY_AND_ASSIGN(ImageWindowDelegate); 57 }; 58 59 } // namespace content 60 61 #endif // CONTENT_BROWSER_WEB_CONTENTS_AURA_IMAGE_WINDOW_DELEGATE_H_ 62
