/* -*- 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/. */ // Main header first: #include "nsSVGGFrame.h" // Keep others in (case-insensitive) order: #include "nsGkAtoms.h" #include "SVGTransformableElement.h" #include "nsIFrame.h" #include "SVGGraphicsElement.h" #include "nsSVGIntegrationUtils.h" #include "nsSVGUtils.h" using namespace mozilla; using namespace mozilla::dom; //---------------------------------------------------------------------- // Implementation nsIFrame* NS_NewSVGGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsSVGGFrame(aContext); } NS_IMPL_FRAMEARENA_HELPERS(nsSVGGFrame) #ifdef DEBUG void nsSVGGFrame::Init(nsIContent* aContent, nsIFrame* aParent, nsIFrame* aPrevInFlow) { NS_ASSERTION(aContent->IsSVG() && static_cast(aContent)->IsTransformable(), "The element doesn't support nsIDOMSVGTransformable"); nsSVGGFrameBase::Init(aContent, aParent, aPrevInFlow); } #endif /* DEBUG */ nsIAtom * nsSVGGFrame::GetType() const { return nsGkAtoms::svgGFrame; } //---------------------------------------------------------------------- // nsISVGChildFrame methods void nsSVGGFrame::NotifySVGChanged(uint32_t aFlags) { NS_ABORT_IF_FALSE(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; } nsSVGGFrameBase::NotifySVGChanged(aFlags); } gfxMatrix nsSVGGFrame::GetCanvasTM(uint32_t aFor, nsIFrame* aTransformRoot) { if (!(GetStateBits() & NS_FRAME_IS_NONDISPLAY) && !aTransformRoot) { if ((aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) || (aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled())) { return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this); } } if (!mCanvasTM) { NS_ASSERTION(mParent, "null parent"); nsSVGContainerFrame *parent = static_cast(mParent); SVGGraphicsElement *content = static_cast(mContent); gfx::Matrix tm = content->PrependLocalTransformsTo( this == aTransformRoot ? gfx::Matrix() : gfx::ToMatrix(parent->GetCanvasTM(aFor, aTransformRoot))); mCanvasTM = new gfxMatrix(ThebesMatrix(tm)); } return *mCanvasTM; } NS_IMETHODIMP nsSVGGFrame::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; }