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layout/xul/nsImageBoxFrame.h@97036ab72558 (annotated)

layout/xul/nsImageBoxFrame.h

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	3	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	4	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	5	#ifndef nsImageBoxFrame_h___
michael@0	6	#define nsImageBoxFrame_h___
michael@0	7
michael@0	8	#include "mozilla/Attributes.h"
michael@0	9	#include "nsLeafBoxFrame.h"
michael@0	10
michael@0	11	#include "imgILoader.h"
michael@0	12	#include "imgIRequest.h"
michael@0	13	#include "imgIContainer.h"
michael@0	14	#include "imgINotificationObserver.h"
michael@0	15	#include "imgIOnloadBlocker.h"
michael@0	16
michael@0	17	class imgRequestProxy;
michael@0	18	class nsImageBoxFrame;
michael@0	19
michael@0	20	class nsDisplayXULImage;
michael@0	21
michael@0	22	class nsImageBoxListener : public imgINotificationObserver,
michael@0	23	public imgIOnloadBlocker
michael@0	24	{
michael@0	25	public:
michael@0	26	nsImageBoxListener();
michael@0	27	virtual ~nsImageBoxListener();
michael@0	28
michael@0	29	NS_DECL_ISUPPORTS
michael@0	30	NS_DECL_IMGINOTIFICATIONOBSERVER
michael@0	31	NS_DECL_IMGIONLOADBLOCKER
michael@0	32
michael@0	33	void SetFrame(nsImageBoxFrame *frame) { mFrame = frame; }
michael@0	34
michael@0	35	private:
michael@0	36	nsImageBoxFrame *mFrame;
michael@0	37	};
michael@0	38
michael@0	39	class nsImageBoxFrame : public nsLeafBoxFrame
michael@0	40	{
michael@0	41	public:
michael@0	42	typedef mozilla::layers::LayerManager LayerManager;
michael@0	43
michael@0	44	friend class nsDisplayXULImage;
michael@0	45	NS_DECL_FRAMEARENA_HELPERS
michael@0	46
michael@0	47	virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	48	virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	49	virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	50	virtual void MarkIntrinsicWidthsDirty() MOZ_OVERRIDE;
michael@0	51
michael@0	52	nsresult Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData);
michael@0	53
michael@0	54	friend nsIFrame* NS_NewImageBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
michael@0	55
michael@0	56	virtual void Init(nsIContent* aContent,
michael@0	57	nsIFrame* aParent,
michael@0	58	nsIFrame* asPrevInFlow) MOZ_OVERRIDE;
michael@0	59
michael@0	60	virtual nsresult AttributeChanged(int32_t aNameSpaceID,
michael@0	61	nsIAtom* aAttribute,
michael@0	62	int32_t aModType) MOZ_OVERRIDE;
michael@0	63
michael@0	64	virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE;
michael@0	65
michael@0	66	virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
michael@0	67
michael@0	68	virtual nsIAtom* GetType() const MOZ_OVERRIDE;
michael@0	69	#ifdef DEBUG_FRAME_DUMP
michael@0	70	virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
michael@0	71	#endif
michael@0	72
michael@0	73	/**
michael@0	74	* Update mUseSrcAttr from appropriate content attributes or from
michael@0	75	* style, throw away the current image, and load the appropriate
michael@0	76	* image.
michael@0	77	* */
michael@0	78	void UpdateImage();
michael@0	79
michael@0	80	/**
michael@0	81	* Update mLoadFlags from content attributes. Does not attempt to reload the
michael@0	82	* image using the new load flags.
michael@0	83	*/
michael@0	84	void UpdateLoadFlags();
michael@0	85
michael@0	86	virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
michael@0	87	const nsRect& aDirtyRect,
michael@0	88	const nsDisplayListSet& aLists) MOZ_OVERRIDE;
michael@0	89
michael@0	90	virtual ~nsImageBoxFrame();
michael@0	91
michael@0	92	void PaintImage(nsRenderingContext& aRenderingContext,
michael@0	93	const nsRect& aDirtyRect,
michael@0	94	nsPoint aPt, uint32_t aFlags);
michael@0	95
michael@0	96	already_AddRefed<mozilla::layers::ImageContainer> GetContainer(LayerManager* aManager);
michael@0	97	protected:
michael@0	98	nsImageBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext);
michael@0	99
michael@0	100	virtual void GetImageSize();
michael@0	101
michael@0	102	private:
michael@0	103	nsresult OnStartContainer(imgIRequest *request, imgIContainer *image);
michael@0	104	nsresult OnStopDecode(imgIRequest *request);
michael@0	105	nsresult OnStopRequest(imgIRequest *request, nsresult status);
michael@0	106	nsresult OnImageIsAnimated(imgIRequest* aRequest);
michael@0	107	nsresult FrameChanged(imgIRequest *aRequest);
michael@0	108
michael@0	109	nsRect mSubRect; ///< If set, indicates that only the portion of the image specified by the rect should be used.
michael@0	110	nsSize mIntrinsicSize;
michael@0	111	nsSize mImageSize;
michael@0	112
michael@0	113	// Boolean variable to determine if the current image request has been
michael@0	114	// registered with the refresh driver.
michael@0	115	bool mRequestRegistered;
michael@0	116
michael@0	117	nsRefPtr<imgRequestProxy> mImageRequest;
michael@0	118	nsCOMPtr<imgINotificationObserver> mListener;
michael@0	119
michael@0	120	int32_t mLoadFlags;
michael@0	121
michael@0	122	bool mUseSrcAttr; ///< Whether or not the image src comes from an attribute.
michael@0	123	bool mSuppressStyleCheck;
michael@0	124	bool mFireEventOnDecode;
michael@0	125	}; // class nsImageBoxFrame
michael@0	126
michael@0	127	class nsDisplayXULImage : public nsDisplayImageContainer {
michael@0	128	public:
michael@0	129	nsDisplayXULImage(nsDisplayListBuilder* aBuilder,
michael@0	130	nsImageBoxFrame* aFrame) :
michael@0	131	nsDisplayImageContainer(aBuilder, aFrame) {
michael@0	132	MOZ_COUNT_CTOR(nsDisplayXULImage);
michael@0	133	}
michael@0	134	#ifdef NS_BUILD_REFCNT_LOGGING
michael@0	135	virtual ~nsDisplayXULImage() {
michael@0	136	MOZ_COUNT_DTOR(nsDisplayXULImage);
michael@0	137	}
michael@0	138	#endif
michael@0	139
michael@0	140	virtual already_AddRefed<ImageContainer> GetContainer(LayerManager* aManager,
michael@0	141	nsDisplayListBuilder* aBuilder) MOZ_OVERRIDE;
michael@0	142	virtual void ConfigureLayer(ImageLayer* aLayer, const nsIntPoint& aOffset) MOZ_OVERRIDE;
michael@0	143	virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) MOZ_OVERRIDE
michael@0	144	{
michael@0	145	*aSnap = true;
michael@0	146	return nsRect(ToReferenceFrame(), Frame()->GetSize());
michael@0	147	}
michael@0	148	virtual void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
michael@0	149	const nsDisplayItemGeometry* aGeometry,
michael@0	150	nsRegion* aInvalidRegion) MOZ_OVERRIDE;
michael@0	151	// Doesn't handle HitTest because nsLeafBoxFrame already creates an
michael@0	152	// event receiver for us
michael@0	153	virtual void Paint(nsDisplayListBuilder* aBuilder,
michael@0	154	nsRenderingContext* aCtx) MOZ_OVERRIDE;
michael@0	155	NS_DISPLAY_DECL_NAME("XULImage", TYPE_XUL_IMAGE)
michael@0	156	};
michael@0	157
michael@0	158	#endif /* nsImageBoxFrame_h___ */