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108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Main header first:
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#include "nsSVGGFrame.h"
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// Keep others in (case-insensitive) order:
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#include "nsGkAtoms.h"
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#include "SVGTransformableElement.h"
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#include "nsIFrame.h"
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#include "SVGGraphicsElement.h"
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#include "nsSVGIntegrationUtils.h"
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#include "nsSVGUtils.h"
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using namespace mozilla::dom;
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//----------------------------------------------------------------------
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// Implementation
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nsIFrame*
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NS_NewSVGGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsSVGGFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsSVGGFrame)
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#ifdef DEBUG
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void
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nsSVGGFrame::Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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NS_ASSERTION(aContent->IsSVG() &&
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static_cast<nsSVGElement*>(aContent)->IsTransformable(),
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"The element doesn't support nsIDOMSVGTransformable");
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nsSVGGFrameBase::Init(aContent, aParent, aPrevInFlow);
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}
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#endif /* DEBUG */
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nsIAtom *
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nsSVGGFrame::GetType() const
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{
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return nsGkAtoms::svgGFrame;
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}
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//----------------------------------------------------------------------
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// nsISVGChildFrame methods
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void
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nsSVGGFrame::NotifySVGChanged(uint32_t aFlags)
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{
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NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
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"Invalidation logic may need adjusting");
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if (aFlags & TRANSFORM_CHANGED) {
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// make sure our cached transform matrix gets (lazily) updated
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mCanvasTM = nullptr;
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}
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nsSVGGFrameBase::NotifySVGChanged(aFlags);
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}
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gfxMatrix
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nsSVGGFrame::GetCanvasTM(uint32_t aFor, nsIFrame* aTransformRoot)
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{
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if (!(GetStateBits() & NS_FRAME_IS_NONDISPLAY) && !aTransformRoot) {
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if (aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) {
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return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
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}
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if (aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled()) {
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return gfxMatrix();
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}
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}
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if (!mCanvasTM) {
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NS_ASSERTION(GetParent(), "null parent");
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nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(GetParent());
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SVGGraphicsElement *content = static_cast<SVGGraphicsElement*>(mContent);
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gfxMatrix tm = content->PrependLocalTransformsTo(
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this == aTransformRoot ? gfxMatrix() :
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parent->GetCanvasTM(aFor, aTransformRoot));
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mCanvasTM = new gfxMatrix(tm);
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}
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return *mCanvasTM;
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}
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nsresult
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nsSVGGFrame::AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType)
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{
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if (aNameSpaceID == kNameSpaceID_None &&
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aAttribute == nsGkAtoms::transform) {
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// We don't invalidate for transform changes (the layers code does that).
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// Also note that SVGTransformableElement::GetAttributeChangeHint will
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// return nsChangeHint_UpdateOverflow for "transform" attribute changes
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// and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.
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NotifySVGChanged(TRANSFORM_CHANGED);
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}
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return NS_OK;
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}
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