/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef mozilla_dom_ImageDocument_h #define mozilla_dom_ImageDocument_h #include "mozilla/Attributes.h" #include "imgINotificationObserver.h" #include "MediaDocument.h" #include "nsIDOMEventListener.h" #include "nsIImageDocument.h" namespace mozilla { namespace dom { class ImageDocument final : public MediaDocument, public nsIImageDocument, public imgINotificationObserver, public nsIDOMEventListener { public: ImageDocument(); NS_DECL_ISUPPORTS_INHERITED virtual nsresult Init() override; virtual nsresult StartDocumentLoad(const char* aCommand, nsIChannel* aChannel, nsILoadGroup* aLoadGroup, nsISupports* aContainer, nsIStreamListener** aDocListener, bool aReset = true, nsIContentSink* aSink = nullptr) override; virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject) override; virtual void Destroy() override; virtual void OnPageShow(bool aPersisted, EventTarget* aDispatchStartTarget) override; NS_DECL_NSIIMAGEDOCUMENT NS_DECL_IMGINOTIFICATIONOBSERVER // nsIDOMEventListener NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) override; NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ImageDocument, MediaDocument) friend class ImageListener; void DefaultCheckOverflowing() { CheckOverflowing(mResizeImageByDefault); } // WebIDL API virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override; bool ImageIsOverflowing() const { return mImageIsOverflowingHorizontally || mImageIsOverflowingVertically; } bool ImageIsResized() const { return mImageIsResized; } already_AddRefed<imgIRequest> GetImageRequest(ErrorResult& aRv); void ShrinkToFit(); void RestoreImage(); void RestoreImageTo(int32_t aX, int32_t aY) { ScrollImageTo(aX, aY, true); } void ToggleImageSize(); protected: virtual ~ImageDocument(); virtual nsresult CreateSyntheticDocument() override; nsresult CheckOverflowing(bool changeState); void UpdateTitleAndCharset(); void ScrollImageTo(int32_t aX, int32_t aY, bool restoreImage); float GetRatio() { return std::min(mVisibleWidth / mImageWidth, mVisibleHeight / mImageHeight); } void ResetZoomLevel(); float GetZoomLevel(); void UpdateSizeFromLayout(); enum eModeClasses { eNone, eShrinkToFit, eOverflowingVertical, // And maybe horizontal too. eOverflowingHorizontalOnly }; void SetModeClass(eModeClasses mode); nsresult OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage); nsresult OnLoadComplete(imgIRequest* aRequest, nsresult aStatus); void OnHasTransparency(); nsCOMPtr<Element> mImageContent; float mVisibleWidth; float mVisibleHeight; int32_t mImageWidth; int32_t mImageHeight; // Holds the custom background color for stand-alone images nsAutoString mBackgroundColor; bool mResizeImageByDefault; bool mClickResizingEnabled; bool mImageIsOverflowingHorizontally; bool mImageIsOverflowingVertically; // mImageIsResized is true if the image is currently resized bool mImageIsResized; // mShouldResize is true if the image should be resized when it doesn't fit // mImageIsResized cannot be true when this is false, but mImageIsResized // can be false when this is true bool mShouldResize; bool mFirstResize; // mObservingImageLoader is true while the observer is set. bool mObservingImageLoader; float mOriginalZoomLevel; }; } // namespace dom } // namespace mozilla #endif /* mozilla_dom_ImageDocument_h */