layout/svg/nsSVGStopFrame.cpp@97036ab72558 (annotated)
layout/svg/nsSVGStopFrame.cpp
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 | // Keep in (case-insensitive) order: |
| michael@0 | 7 | #include "nsFrame.h" |
| michael@0 | 8 | #include "nsGkAtoms.h" |
| michael@0 | 9 | #include "nsStyleContext.h" |
| michael@0 | 10 | #include "nsSVGEffects.h" |
| michael@0 | 11 | |
| michael@0 | 12 | // This is a very simple frame whose only purpose is to capture style change |
| michael@0 | 13 | // events and propagate them to the parent. Most of the heavy lifting is done |
| michael@0 | 14 | // within the nsSVGGradientFrame, which is the parent for this frame |
| michael@0 | 15 | |
| michael@0 | 16 | typedef nsFrame nsSVGStopFrameBase; |
| michael@0 | 17 | |
| michael@0 | 18 | class nsSVGStopFrame : public nsSVGStopFrameBase |
| michael@0 | 19 | { |
| michael@0 | 20 | friend nsIFrame* |
| michael@0 | 21 | NS_NewSVGStopFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); |
| michael@0 | 22 | protected: |
| michael@0 | 23 | nsSVGStopFrame(nsStyleContext* aContext) |
| michael@0 | 24 | : nsSVGStopFrameBase(aContext) |
| michael@0 | 25 | { |
| michael@0 | 26 | AddStateBits(NS_FRAME_IS_NONDISPLAY); |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | public: |
| michael@0 | 30 | NS_DECL_FRAMEARENA_HELPERS |
| michael@0 | 31 | |
| michael@0 | 32 | // nsIFrame interface: |
| michael@0 | 33 | #ifdef DEBUG |
| michael@0 | 34 | virtual void Init(nsIContent* aContent, |
| michael@0 | 35 | nsIFrame* aParent, |
| michael@0 | 36 | nsIFrame* aPrevInFlow) MOZ_OVERRIDE; |
| michael@0 | 37 | #endif |
| michael@0 | 38 | |
| michael@0 | 39 | void BuildDisplayList(nsDisplayListBuilder* aBuilder, |
| michael@0 | 40 | const nsRect& aDirtyRect, |
| michael@0 | 41 | const nsDisplayListSet& aLists) MOZ_OVERRIDE {} |
| michael@0 | 42 | |
| michael@0 | 43 | virtual nsresult AttributeChanged(int32_t aNameSpaceID, |
| michael@0 | 44 | nsIAtom* aAttribute, |
| michael@0 | 45 | int32_t aModType) MOZ_OVERRIDE; |
| michael@0 | 46 | |
| michael@0 | 47 | /** |
| michael@0 | 48 | * Get the "type" of the frame |
| michael@0 | 49 | * |
| michael@0 | 50 | * @see nsGkAtoms::svgStopFrame |
| michael@0 | 51 | */ |
| michael@0 | 52 | virtual nsIAtom* GetType() const MOZ_OVERRIDE; |
| michael@0 | 53 | |
| michael@0 | 54 | virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE |
| michael@0 | 55 | { |
| michael@0 | 56 | return nsSVGStopFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG)); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | #ifdef DEBUG_FRAME_DUMP |
| michael@0 | 60 | virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE |
| michael@0 | 61 | { |
| michael@0 | 62 | return MakeFrameName(NS_LITERAL_STRING("SVGStop"), aResult); |
| michael@0 | 63 | } |
| michael@0 | 64 | #endif |
| michael@0 | 65 | }; |
| michael@0 | 66 | |
| michael@0 | 67 | //---------------------------------------------------------------------- |
| michael@0 | 68 | // Implementation |
| michael@0 | 69 | |
| michael@0 | 70 | NS_IMPL_FRAMEARENA_HELPERS(nsSVGStopFrame) |
| michael@0 | 71 | |
| michael@0 | 72 | //---------------------------------------------------------------------- |
| michael@0 | 73 | // nsIFrame methods: |
| michael@0 | 74 | |
| michael@0 | 75 | #ifdef DEBUG |
| michael@0 | 76 | void |
| michael@0 | 77 | nsSVGStopFrame::Init(nsIContent* aContent, |
| michael@0 | 78 | nsIFrame* aParent, |
| michael@0 | 79 | nsIFrame* aPrevInFlow) |
| michael@0 | 80 | { |
| michael@0 | 81 | NS_ASSERTION(aContent->IsSVG(nsGkAtoms::stop), "Content is not a stop element"); |
| michael@0 | 82 | |
| michael@0 | 83 | nsSVGStopFrameBase::Init(aContent, aParent, aPrevInFlow); |
| michael@0 | 84 | } |
| michael@0 | 85 | #endif /* DEBUG */ |
| michael@0 | 86 | |
| michael@0 | 87 | nsIAtom * |
| michael@0 | 88 | nsSVGStopFrame::GetType() const |
| michael@0 | 89 | { |
| michael@0 | 90 | return nsGkAtoms::svgStopFrame; |
| michael@0 | 91 | } |
| michael@0 | 92 | |
| michael@0 | 93 | nsresult |
| michael@0 | 94 | nsSVGStopFrame::AttributeChanged(int32_t aNameSpaceID, |
| michael@0 | 95 | nsIAtom* aAttribute, |
| michael@0 | 96 | int32_t aModType) |
| michael@0 | 97 | { |
| michael@0 | 98 | if (aNameSpaceID == kNameSpaceID_None && |
| michael@0 | 99 | aAttribute == nsGkAtoms::offset) { |
| michael@0 | 100 | nsSVGEffects::InvalidateRenderingObservers(this); |
| michael@0 | 101 | } |
| michael@0 | 102 | |
| michael@0 | 103 | return nsSVGStopFrameBase::AttributeChanged(aNameSpaceID, |
| michael@0 | 104 | aAttribute, aModType); |
| michael@0 | 105 | } |
| michael@0 | 106 | |
| michael@0 | 107 | // ------------------------------------------------------------------------- |
| michael@0 | 108 | // Public functions |
| michael@0 | 109 | // ------------------------------------------------------------------------- |
| michael@0 | 110 | |
| michael@0 | 111 | nsIFrame* NS_NewSVGStopFrame(nsIPresShell* aPresShell, |
| michael@0 | 112 | nsStyleContext* aContext) |
| michael@0 | 113 | { |
| michael@0 | 114 | return new (aPresShell) nsSVGStopFrame(aContext); |
| michael@0 | 115 | } |
