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comparison: content/html/document/src/ImageDocument.h
content/html/document/src/ImageDocument.h
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| -1:000000000000 | 0:6cd80d62e20e |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 #ifndef mozilla_dom_ImageDocument_h | |
| 6 #define mozilla_dom_ImageDocument_h | |
| 7 | |
| 8 #include "mozilla/Attributes.h" | |
| 9 #include "imgINotificationObserver.h" | |
| 10 #include "MediaDocument.h" | |
| 11 #include "nsIDOMEventListener.h" | |
| 12 #include "nsIImageDocument.h" | |
| 13 | |
| 14 namespace mozilla { | |
| 15 namespace dom { | |
| 16 | |
| 17 class ImageDocument MOZ_FINAL : public MediaDocument, | |
| 18 public nsIImageDocument, | |
| 19 public imgINotificationObserver, | |
| 20 public nsIDOMEventListener | |
| 21 { | |
| 22 public: | |
| 23 ImageDocument(); | |
| 24 virtual ~ImageDocument(); | |
| 25 | |
| 26 NS_DECL_ISUPPORTS_INHERITED | |
| 27 | |
| 28 virtual nsresult Init() MOZ_OVERRIDE; | |
| 29 | |
| 30 virtual nsresult StartDocumentLoad(const char* aCommand, | |
| 31 nsIChannel* aChannel, | |
| 32 nsILoadGroup* aLoadGroup, | |
| 33 nsISupports* aContainer, | |
| 34 nsIStreamListener** aDocListener, | |
| 35 bool aReset = true, | |
| 36 nsIContentSink* aSink = nullptr) MOZ_OVERRIDE; | |
| 37 | |
| 38 virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject) MOZ_OVERRIDE; | |
| 39 virtual void Destroy() MOZ_OVERRIDE; | |
| 40 virtual void OnPageShow(bool aPersisted, | |
| 41 EventTarget* aDispatchStartTarget) MOZ_OVERRIDE; | |
| 42 | |
| 43 NS_DECL_NSIIMAGEDOCUMENT | |
| 44 NS_DECL_IMGINOTIFICATIONOBSERVER | |
| 45 | |
| 46 // nsIDOMEventListener | |
| 47 NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) MOZ_OVERRIDE; | |
| 48 | |
| 49 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ImageDocument, MediaDocument) | |
| 50 | |
| 51 friend class ImageListener; | |
| 52 | |
| 53 void DefaultCheckOverflowing() { CheckOverflowing(mResizeImageByDefault); } | |
| 54 | |
| 55 // WebIDL API | |
| 56 virtual JSObject* WrapNode(JSContext* aCx) | |
| 57 MOZ_OVERRIDE; | |
| 58 | |
| 59 bool ImageResizingEnabled() const | |
| 60 { | |
| 61 return true; | |
| 62 } | |
| 63 bool ImageIsOverflowing() const | |
| 64 { | |
| 65 return mImageIsOverflowing; | |
| 66 } | |
| 67 bool ImageIsResized() const | |
| 68 { | |
| 69 return mImageIsResized; | |
| 70 } | |
| 71 already_AddRefed<imgIRequest> GetImageRequest(ErrorResult& aRv); | |
| 72 void ShrinkToFit(); | |
| 73 void RestoreImage(); | |
| 74 void RestoreImageTo(int32_t aX, int32_t aY) | |
| 75 { | |
| 76 ScrollImageTo(aX, aY, true); | |
| 77 } | |
| 78 void ToggleImageSize(); | |
| 79 | |
| 80 protected: | |
| 81 virtual nsresult CreateSyntheticDocument(); | |
| 82 | |
| 83 nsresult CheckOverflowing(bool changeState); | |
| 84 | |
| 85 void UpdateTitleAndCharset(); | |
| 86 | |
| 87 void ScrollImageTo(int32_t aX, int32_t aY, bool restoreImage); | |
| 88 | |
| 89 float GetRatio() { | |
| 90 return std::min(mVisibleWidth / mImageWidth, | |
| 91 mVisibleHeight / mImageHeight); | |
| 92 } | |
| 93 | |
| 94 void ResetZoomLevel(); | |
| 95 float GetZoomLevel(); | |
| 96 | |
| 97 void UpdateSizeFromLayout(); | |
| 98 | |
| 99 enum eModeClasses { | |
| 100 eNone, | |
| 101 eShrinkToFit, | |
| 102 eOverflowing | |
| 103 }; | |
| 104 void SetModeClass(eModeClasses mode); | |
| 105 | |
| 106 nsresult OnStartContainer(imgIRequest* aRequest, imgIContainer* aImage); | |
| 107 nsresult OnStopRequest(imgIRequest *aRequest, nsresult aStatus); | |
| 108 | |
| 109 nsCOMPtr<nsIContent> mImageContent; | |
| 110 | |
| 111 float mVisibleWidth; | |
| 112 float mVisibleHeight; | |
| 113 int32_t mImageWidth; | |
| 114 int32_t mImageHeight; | |
| 115 | |
| 116 bool mResizeImageByDefault; | |
| 117 bool mClickResizingEnabled; | |
| 118 bool mImageIsOverflowing; | |
| 119 // mImageIsResized is true if the image is currently resized | |
| 120 bool mImageIsResized; | |
| 121 // mShouldResize is true if the image should be resized when it doesn't fit | |
| 122 // mImageIsResized cannot be true when this is false, but mImageIsResized | |
| 123 // can be false when this is true | |
| 124 bool mShouldResize; | |
| 125 bool mFirstResize; | |
| 126 // mObservingImageLoader is true while the observer is set. | |
| 127 bool mObservingImageLoader; | |
| 128 | |
| 129 float mOriginalZoomLevel; | |
| 130 }; | |
| 131 | |
| 132 } // namespace dom | |
| 133 } // namespace mozilla | |
| 134 | |
| 135 #endif /* mozilla_dom_ImageDocument_h */ |
