1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/svg/nsSVGAFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,157 @@
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 +
1.9 +// Keep in (case-insensitive) order:
1.10 +#include "gfxMatrix.h"
1.11 +#include "mozilla/dom/SVGAElement.h"
1.12 +#include "nsSVGContainerFrame.h"
1.13 +#include "nsSVGIntegrationUtils.h"
1.14 +#include "nsSVGUtils.h"
1.15 +#include "SVGLengthList.h"
1.16 +
1.17 +using namespace mozilla;
1.18 +
1.19 +typedef nsSVGDisplayContainerFrame nsSVGAFrameBase;
1.20 +
1.21 +class nsSVGAFrame : public nsSVGAFrameBase
1.22 +{
1.23 + friend nsIFrame*
1.24 + NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
1.25 +protected:
1.26 + nsSVGAFrame(nsStyleContext* aContext) :
1.27 + nsSVGAFrameBase(aContext) {}
1.28 +
1.29 +public:
1.30 + NS_DECL_FRAMEARENA_HELPERS
1.31 +
1.32 +#ifdef DEBUG
1.33 + virtual void Init(nsIContent* aContent,
1.34 + nsIFrame* aParent,
1.35 + nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
1.36 +#endif
1.37 +
1.38 + // nsIFrame:
1.39 + virtual nsresult AttributeChanged(int32_t aNameSpaceID,
1.40 + nsIAtom* aAttribute,
1.41 + int32_t aModType) MOZ_OVERRIDE;
1.42 +
1.43 + /**
1.44 + * Get the "type" of the frame
1.45 + *
1.46 + * @see nsGkAtoms::svgAFrame
1.47 + */
1.48 + virtual nsIAtom* GetType() const MOZ_OVERRIDE;
1.49 +
1.50 +#ifdef DEBUG_FRAME_DUMP
1.51 + virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE
1.52 + {
1.53 + return MakeFrameName(NS_LITERAL_STRING("SVGA"), aResult);
1.54 + }
1.55 +#endif
1.56 + // nsISVGChildFrame interface:
1.57 + virtual void NotifySVGChanged(uint32_t aFlags) MOZ_OVERRIDE;
1.58 +
1.59 + // nsSVGContainerFrame methods:
1.60 + virtual gfxMatrix GetCanvasTM(uint32_t aFor,
1.61 + nsIFrame* aTransformRoot = nullptr) MOZ_OVERRIDE;
1.62 +
1.63 +private:
1.64 + nsAutoPtr<gfxMatrix> mCanvasTM;
1.65 +};
1.66 +
1.67 +//----------------------------------------------------------------------
1.68 +// Implementation
1.69 +
1.70 +nsIFrame*
1.71 +NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.72 +{
1.73 + return new (aPresShell) nsSVGAFrame(aContext);
1.74 +}
1.75 +
1.76 +NS_IMPL_FRAMEARENA_HELPERS(nsSVGAFrame)
1.77 +
1.78 +//----------------------------------------------------------------------
1.79 +// nsIFrame methods
1.80 +#ifdef DEBUG
1.81 +void
1.82 +nsSVGAFrame::Init(nsIContent* aContent,
1.83 + nsIFrame* aParent,
1.84 + nsIFrame* aPrevInFlow)
1.85 +{
1.86 + NS_ASSERTION(aContent->IsSVG(nsGkAtoms::a),
1.87 + "Trying to construct an SVGAFrame for a "
1.88 + "content element that doesn't support the right interfaces");
1.89 +
1.90 + nsSVGAFrameBase::Init(aContent, aParent, aPrevInFlow);
1.91 +}
1.92 +#endif /* DEBUG */
1.93 +
1.94 +nsresult
1.95 +nsSVGAFrame::AttributeChanged(int32_t aNameSpaceID,
1.96 + nsIAtom* aAttribute,
1.97 + int32_t aModType)
1.98 +{
1.99 + if (aNameSpaceID == kNameSpaceID_None &&
1.100 + aAttribute == nsGkAtoms::transform) {
1.101 + // We don't invalidate for transform changes (the layers code does that).
1.102 + // Also note that SVGTransformableElement::GetAttributeChangeHint will
1.103 + // return nsChangeHint_UpdateOverflow for "transform" attribute changes
1.104 + // and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.
1.105 + NotifySVGChanged(TRANSFORM_CHANGED);
1.106 + }
1.107 +
1.108 + return NS_OK;
1.109 +}
1.110 +
1.111 +nsIAtom *
1.112 +nsSVGAFrame::GetType() const
1.113 +{
1.114 + return nsGkAtoms::svgAFrame;
1.115 +}
1.116 +
1.117 +//----------------------------------------------------------------------
1.118 +// nsISVGChildFrame methods
1.119 +
1.120 +void
1.121 +nsSVGAFrame::NotifySVGChanged(uint32_t aFlags)
1.122 +{
1.123 + NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
1.124 + "Invalidation logic may need adjusting");
1.125 +
1.126 + if (aFlags & TRANSFORM_CHANGED) {
1.127 + // make sure our cached transform matrix gets (lazily) updated
1.128 + mCanvasTM = nullptr;
1.129 + }
1.130 +
1.131 + nsSVGAFrameBase::NotifySVGChanged(aFlags);
1.132 +}
1.133 +
1.134 +//----------------------------------------------------------------------
1.135 +// nsSVGContainerFrame methods:
1.136 +
1.137 +gfxMatrix
1.138 +nsSVGAFrame::GetCanvasTM(uint32_t aFor, nsIFrame* aTransformRoot)
1.139 +{
1.140 + if (!(GetStateBits() & NS_FRAME_IS_NONDISPLAY) && !aTransformRoot) {
1.141 + if ((aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) ||
1.142 + (aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled())) {
1.143 + return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
1.144 + }
1.145 + }
1.146 + if (!mCanvasTM) {
1.147 + NS_ASSERTION(mParent, "null parent");
1.148 +
1.149 + nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(mParent);
1.150 + dom::SVGAElement *content = static_cast<dom::SVGAElement*>(mContent);
1.151 +
1.152 + gfxMatrix tm = content->PrependLocalTransformsTo(
1.153 + this == aTransformRoot ? gfxMatrix() :
1.154 + parent->GetCanvasTM(aFor, aTransformRoot));
1.155 +
1.156 + mCanvasTM = new gfxMatrix(tm);
1.157 + }
1.158 +
1.159 + return *mCanvasTM;
1.160 +}
