/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ // Keep in (case-insensitive) order: #include "gfxMatrix.h" #include "mozilla/dom/SVGAElement.h" #include "nsAutoPtr.h" #include "nsSVGContainerFrame.h" #include "nsSVGIntegrationUtils.h" #include "nsSVGUtils.h" #include "SVGLengthList.h" using namespace mozilla; class nsSVGAFrame : public nsSVGDisplayContainerFrame { friend nsIFrame* NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); protected: explicit nsSVGAFrame(nsStyleContext* aContext) : nsSVGDisplayContainerFrame(aContext) {} public: NS_DECL_FRAMEARENA_HELPERS #ifdef DEBUG virtual void Init(nsIContent* aContent, nsContainerFrame* aParent, nsIFrame* aPrevInFlow) override; #endif // nsIFrame: virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType) override; /** * Get the "type" of the frame * * @see nsGkAtoms::svgAFrame */ virtual nsIAtom* GetType() const override; #ifdef DEBUG_FRAME_DUMP virtual nsresult GetFrameName(nsAString& aResult) const override { return MakeFrameName(NS_LITERAL_STRING("SVGA"), aResult); } #endif // nsISVGChildFrame interface: virtual void NotifySVGChanged(uint32_t aFlags) override; // nsSVGContainerFrame methods: virtual gfxMatrix GetCanvasTM() override; private: nsAutoPtr<gfxMatrix> mCanvasTM; }; //---------------------------------------------------------------------- // Implementation nsIFrame* NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsSVGAFrame(aContext); } NS_IMPL_FRAMEARENA_HELPERS(nsSVGAFrame) //---------------------------------------------------------------------- // nsIFrame methods #ifdef DEBUG void nsSVGAFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, nsIFrame* aPrevInFlow) { NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::a), "Trying to construct an SVGAFrame for a " "content element that doesn't support the right interfaces"); nsSVGDisplayContainerFrame::Init(aContent, aParent, aPrevInFlow); } #endif /* DEBUG */ nsresult nsSVGAFrame::AttributeChanged(int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType) { if (aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::transform) { // We don't invalidate for transform changes (the layers code does that). // Also note that SVGTransformableElement::GetAttributeChangeHint will // return nsChangeHint_UpdateOverflow for "transform" attribute changes // and cause DoApplyRenderingChangeToTree to make the SchedulePaint call. NotifySVGChanged(TRANSFORM_CHANGED); } return NS_OK; } nsIAtom * nsSVGAFrame::GetType() const { return nsGkAtoms::svgAFrame; } //---------------------------------------------------------------------- // nsISVGChildFrame methods void nsSVGAFrame::NotifySVGChanged(uint32_t aFlags) { MOZ_ASSERT(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED), "Invalidation logic may need adjusting"); if (aFlags & TRANSFORM_CHANGED) { // make sure our cached transform matrix gets (lazily) updated mCanvasTM = nullptr; } nsSVGDisplayContainerFrame::NotifySVGChanged(aFlags); } //---------------------------------------------------------------------- // nsSVGContainerFrame methods: gfxMatrix nsSVGAFrame::GetCanvasTM() { if (!mCanvasTM) { NS_ASSERTION(GetParent(), "null parent"); nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(GetParent()); dom::SVGAElement *content = static_cast<dom::SVGAElement*>(mContent); gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM()); mCanvasTM = new gfxMatrix(tm); } return *mCanvasTM; }