1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/html/document/src/ImageDocument.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,135 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +#ifndef mozilla_dom_ImageDocument_h
1.9 +#define mozilla_dom_ImageDocument_h
1.10 +
1.11 +#include "mozilla/Attributes.h"
1.12 +#include "imgINotificationObserver.h"
1.13 +#include "MediaDocument.h"
1.14 +#include "nsIDOMEventListener.h"
1.15 +#include "nsIImageDocument.h"
1.16 +
1.17 +namespace mozilla {
1.18 +namespace dom {
1.19 +
1.20 +class ImageDocument MOZ_FINAL : public MediaDocument,
1.21 + public nsIImageDocument,
1.22 + public imgINotificationObserver,
1.23 + public nsIDOMEventListener
1.24 +{
1.25 +public:
1.26 + ImageDocument();
1.27 + virtual ~ImageDocument();
1.28 +
1.29 + NS_DECL_ISUPPORTS_INHERITED
1.30 +
1.31 + virtual nsresult Init() MOZ_OVERRIDE;
1.32 +
1.33 + virtual nsresult StartDocumentLoad(const char* aCommand,
1.34 + nsIChannel* aChannel,
1.35 + nsILoadGroup* aLoadGroup,
1.36 + nsISupports* aContainer,
1.37 + nsIStreamListener** aDocListener,
1.38 + bool aReset = true,
1.39 + nsIContentSink* aSink = nullptr) MOZ_OVERRIDE;
1.40 +
1.41 + virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject) MOZ_OVERRIDE;
1.42 + virtual void Destroy() MOZ_OVERRIDE;
1.43 + virtual void OnPageShow(bool aPersisted,
1.44 + EventTarget* aDispatchStartTarget) MOZ_OVERRIDE;
1.45 +
1.46 + NS_DECL_NSIIMAGEDOCUMENT
1.47 + NS_DECL_IMGINOTIFICATIONOBSERVER
1.48 +
1.49 + // nsIDOMEventListener
1.50 + NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) MOZ_OVERRIDE;
1.51 +
1.52 + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ImageDocument, MediaDocument)
1.53 +
1.54 + friend class ImageListener;
1.55 +
1.56 + void DefaultCheckOverflowing() { CheckOverflowing(mResizeImageByDefault); }
1.57 +
1.58 + // WebIDL API
1.59 + virtual JSObject* WrapNode(JSContext* aCx)
1.60 + MOZ_OVERRIDE;
1.61 +
1.62 + bool ImageResizingEnabled() const
1.63 + {
1.64 + return true;
1.65 + }
1.66 + bool ImageIsOverflowing() const
1.67 + {
1.68 + return mImageIsOverflowing;
1.69 + }
1.70 + bool ImageIsResized() const
1.71 + {
1.72 + return mImageIsResized;
1.73 + }
1.74 + already_AddRefed<imgIRequest> GetImageRequest(ErrorResult& aRv);
1.75 + void ShrinkToFit();
1.76 + void RestoreImage();
1.77 + void RestoreImageTo(int32_t aX, int32_t aY)
1.78 + {
1.79 + ScrollImageTo(aX, aY, true);
1.80 + }
1.81 + void ToggleImageSize();
1.82 +
1.83 +protected:
1.84 + virtual nsresult CreateSyntheticDocument();
1.85 +
1.86 + nsresult CheckOverflowing(bool changeState);
1.87 +
1.88 + void UpdateTitleAndCharset();
1.89 +
1.90 + void ScrollImageTo(int32_t aX, int32_t aY, bool restoreImage);
1.91 +
1.92 + float GetRatio() {
1.93 + return std::min(mVisibleWidth / mImageWidth,
1.94 + mVisibleHeight / mImageHeight);
1.95 + }
1.96 +
1.97 + void ResetZoomLevel();
1.98 + float GetZoomLevel();
1.99 +
1.100 + void UpdateSizeFromLayout();
1.101 +
1.102 + enum eModeClasses {
1.103 + eNone,
1.104 + eShrinkToFit,
1.105 + eOverflowing
1.106 + };
1.107 + void SetModeClass(eModeClasses mode);
1.108 +
1.109 + nsresult OnStartContainer(imgIRequest* aRequest, imgIContainer* aImage);
1.110 + nsresult OnStopRequest(imgIRequest *aRequest, nsresult aStatus);
1.111 +
1.112 + nsCOMPtr<nsIContent> mImageContent;
1.113 +
1.114 + float mVisibleWidth;
1.115 + float mVisibleHeight;
1.116 + int32_t mImageWidth;
1.117 + int32_t mImageHeight;
1.118 +
1.119 + bool mResizeImageByDefault;
1.120 + bool mClickResizingEnabled;
1.121 + bool mImageIsOverflowing;
1.122 + // mImageIsResized is true if the image is currently resized
1.123 + bool mImageIsResized;
1.124 + // mShouldResize is true if the image should be resized when it doesn't fit
1.125 + // mImageIsResized cannot be true when this is false, but mImageIsResized
1.126 + // can be false when this is true
1.127 + bool mShouldResize;
1.128 + bool mFirstResize;
1.129 + // mObservingImageLoader is true while the observer is set.
1.130 + bool mObservingImageLoader;
1.131 +
1.132 + float mOriginalZoomLevel;
1.133 +};
1.134 +
1.135 +} // namespace dom
1.136 +} // namespace mozilla
1.137 +
1.138 +#endif /* mozilla_dom_ImageDocument_h */
