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

layout/xul/nsBox.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
michael@0	6	#ifndef nsBox_h___
michael@0	7	#define nsBox_h___
michael@0	8
michael@0	9	#include "mozilla/Attributes.h"
michael@0	10	#include "nsIFrame.h"
michael@0	11
michael@0	12	class nsITheme;
michael@0	13
michael@0	14	class nsBox : public nsIFrame {
michael@0	15
michael@0	16	public:
michael@0	17
michael@0	18	friend class nsIFrame;
michael@0	19
michael@0	20	static void Shutdown();
michael@0	21
michael@0	22	virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	23	virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	24	virtual nsSize GetMaxSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	25	virtual nscoord GetFlex(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	26	virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	27
michael@0	28	virtual nsSize GetMinSizeForScrollArea(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0	29
michael@0	30	virtual bool IsCollapsed() MOZ_OVERRIDE;
michael@0	31
michael@0	32	virtual void SetBounds(nsBoxLayoutState& aBoxLayoutState, const nsRect& aRect,
michael@0	33	bool aRemoveOverflowAreas = false) MOZ_OVERRIDE;
michael@0	34
michael@0	35	virtual nsresult GetBorder(nsMargin& aBorderAndPadding) MOZ_OVERRIDE;
michael@0	36	virtual nsresult GetPadding(nsMargin& aBorderAndPadding) MOZ_OVERRIDE;
michael@0	37	virtual nsresult GetMargin(nsMargin& aMargin) MOZ_OVERRIDE;
michael@0	38
michael@0	39	virtual Valignment GetVAlign() const MOZ_OVERRIDE { return vAlign_Top; }
michael@0	40	virtual Halignment GetHAlign() const MOZ_OVERRIDE { return hAlign_Left; }
michael@0	41
michael@0	42	virtual nsresult RelayoutChildAtOrdinal(nsBoxLayoutState& aState, nsIFrame* aChild) MOZ_OVERRIDE;
michael@0	43
michael@0	44	#ifdef DEBUG_LAYOUT
michael@0	45	NS_IMETHOD GetDebugBoxAt(const nsPoint& aPoint, nsIFrame** aBox);
michael@0	46	virtual nsresult GetDebug(bool& aDebug) MOZ_OVERRIDE;
michael@0	47	virtual nsresult SetDebug(nsBoxLayoutState& aState, bool aDebug) MOZ_OVERRIDE;
michael@0	48
michael@0	49	virtual nsresult DumpBox(FILE* out) MOZ_OVERRIDE;
michael@0	50	NS_HIDDEN_(void) PropagateDebug(nsBoxLayoutState& aState);
michael@0	51	#endif
michael@0	52
michael@0	53	nsBox();
michael@0	54	virtual ~nsBox();
michael@0	55
michael@0	56	/**
michael@0	57	* Returns true if this box clips its children, e.g., if this box is an sc
michael@0	58	rollbox.
michael@0	59	*/
michael@0	60	virtual bool DoesClipChildren();
michael@0	61	virtual bool ComputesOwnOverflowArea() = 0;
michael@0	62
michael@0	63	NS_HIDDEN_(nsresult) SyncLayout(nsBoxLayoutState& aBoxLayoutState);
michael@0	64
michael@0	65	bool DoesNeedRecalc(const nsSize& aSize);
michael@0	66	bool DoesNeedRecalc(nscoord aCoord);
michael@0	67	void SizeNeedsRecalc(nsSize& aSize);
michael@0	68	void CoordNeedsRecalc(nscoord& aCoord);
michael@0	69
michael@0	70	void AddBorderAndPadding(nsSize& aSize);
michael@0	71
michael@0	72	static void AddBorderAndPadding(nsIFrame* aBox, nsSize& aSize);
michael@0	73	static void AddMargin(nsIFrame* aChild, nsSize& aSize);
michael@0	74	static void AddMargin(nsSize& aSize, const nsMargin& aMargin);
michael@0	75
michael@0	76	static nsSize BoundsCheckMinMax(const nsSize& aMinSize, const nsSize& aMaxSize);
michael@0	77	static nsSize BoundsCheck(const nsSize& aMinSize, const nsSize& aPrefSize, const nsSize& aMaxSize);
michael@0	78	static nscoord BoundsCheck(nscoord aMinSize, nscoord aPrefSize, nscoord aMaxSize);
michael@0	79
michael@0	80	protected:
michael@0	81
michael@0	82	#ifdef DEBUG_LAYOUT
michael@0	83	virtual void AppendAttribute(const nsAutoString& aAttribute, const nsAutoString& aValue, nsAutoString& aResult);
michael@0	84
michael@0	85	virtual void ListBox(nsAutoString& aResult);
michael@0	86	#endif
michael@0	87
michael@0	88	virtual void GetLayoutFlags(uint32_t& aFlags);
michael@0	89
michael@0	90	NS_HIDDEN_(nsresult) BeginLayout(nsBoxLayoutState& aState);
michael@0	91	NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState);
michael@0	92	NS_HIDDEN_(nsresult) EndLayout(nsBoxLayoutState& aState);
michael@0	93
michael@0	94	#ifdef DEBUG_LAYOUT
michael@0	95	virtual void GetBoxName(nsAutoString& aName);
michael@0	96	NS_HIDDEN_(void) PropagateDebug(nsBoxLayoutState& aState);
michael@0	97	#endif
michael@0	98
michael@0	99	static bool gGotTheme;
michael@0	100	static nsITheme* gTheme;
michael@0	101
michael@0	102	enum eMouseThrough {
michael@0	103	unset,
michael@0	104	never,
michael@0	105	always
michael@0	106	};
michael@0	107
michael@0	108	private:
michael@0	109
michael@0	110	//nscoord mX;
michael@0	111	//nscoord mY;
michael@0	112	};
michael@0	113
michael@0	114	#ifdef DEBUG_LAYOUT
michael@0	115	#define NS_BOX_ASSERTION(box,expr,str) \
michael@0	116	if (!(expr)) { \
michael@0	117	box->DumpBox(stdout); \
michael@0	118	NS_DebugBreak(NSDebugAssertion, str, #expr, __FILE__, __LINE__); \
michael@0	119	}
michael@0	120	#else
michael@0	121	#define NS_BOX_ASSERTION(box,expr,str) {}
michael@0	122	#endif
michael@0	123
michael@0	124	#endif
michael@0	125