1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/svg/nsSVGGFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,105 @@
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 +// Main header first:
1.10 +#include "nsSVGGFrame.h"
1.11 +
1.12 +// Keep others in (case-insensitive) order:
1.13 +#include "nsGkAtoms.h"
1.14 +#include "SVGTransformableElement.h"
1.15 +#include "nsIFrame.h"
1.16 +#include "SVGGraphicsElement.h"
1.17 +#include "nsSVGIntegrationUtils.h"
1.18 +#include "nsSVGUtils.h"
1.19 +
1.20 +using namespace mozilla::dom;
1.21 +
1.22 +//----------------------------------------------------------------------
1.23 +// Implementation
1.24 +
1.25 +nsIFrame*
1.26 +NS_NewSVGGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.27 +{
1.28 + return new (aPresShell) nsSVGGFrame(aContext);
1.29 +}
1.30 +
1.31 +NS_IMPL_FRAMEARENA_HELPERS(nsSVGGFrame)
1.32 +
1.33 +#ifdef DEBUG
1.34 +void
1.35 +nsSVGGFrame::Init(nsIContent* aContent,
1.36 + nsIFrame* aParent,
1.37 + nsIFrame* aPrevInFlow)
1.38 +{
1.39 + NS_ASSERTION(aContent->IsSVG() &&
1.40 + static_cast<nsSVGElement*>(aContent)->IsTransformable(),
1.41 + "The element doesn't support nsIDOMSVGTransformable");
1.42 +
1.43 + nsSVGGFrameBase::Init(aContent, aParent, aPrevInFlow);
1.44 +}
1.45 +#endif /* DEBUG */
1.46 +
1.47 +nsIAtom *
1.48 +nsSVGGFrame::GetType() const
1.49 +{
1.50 + return nsGkAtoms::svgGFrame;
1.51 +}
1.52 +
1.53 +//----------------------------------------------------------------------
1.54 +// nsISVGChildFrame methods
1.55 +
1.56 +void
1.57 +nsSVGGFrame::NotifySVGChanged(uint32_t aFlags)
1.58 +{
1.59 + NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
1.60 + "Invalidation logic may need adjusting");
1.61 +
1.62 + if (aFlags & TRANSFORM_CHANGED) {
1.63 + // make sure our cached transform matrix gets (lazily) updated
1.64 + mCanvasTM = nullptr;
1.65 + }
1.66 +
1.67 + nsSVGGFrameBase::NotifySVGChanged(aFlags);
1.68 +}
1.69 +
1.70 +gfxMatrix
1.71 +nsSVGGFrame::GetCanvasTM(uint32_t aFor, nsIFrame* aTransformRoot)
1.72 +{
1.73 + if (!(GetStateBits() & NS_FRAME_IS_NONDISPLAY) && !aTransformRoot) {
1.74 + if ((aFor == FOR_PAINTING && NS_SVGDisplayListPaintingEnabled()) ||
1.75 + (aFor == FOR_HIT_TESTING && NS_SVGDisplayListHitTestingEnabled())) {
1.76 + return nsSVGIntegrationUtils::GetCSSPxToDevPxMatrix(this);
1.77 + }
1.78 + }
1.79 + if (!mCanvasTM) {
1.80 + NS_ASSERTION(mParent, "null parent");
1.81 +
1.82 + nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(mParent);
1.83 + SVGGraphicsElement *content = static_cast<SVGGraphicsElement*>(mContent);
1.84 + gfxMatrix tm = content->PrependLocalTransformsTo(
1.85 + this == aTransformRoot ? gfxMatrix() :
1.86 + parent->GetCanvasTM(aFor, aTransformRoot));
1.87 +
1.88 + mCanvasTM = new gfxMatrix(tm);
1.89 + }
1.90 + return *mCanvasTM;
1.91 +}
1.92 +
1.93 +nsresult
1.94 +nsSVGGFrame::AttributeChanged(int32_t aNameSpaceID,
1.95 + nsIAtom* aAttribute,
1.96 + int32_t aModType)
1.97 +{
1.98 + if (aNameSpaceID == kNameSpaceID_None &&
1.99 + aAttribute == nsGkAtoms::transform) {
1.100 + // We don't invalidate for transform changes (the layers code does that).
1.101 + // Also note that SVGTransformableElement::GetAttributeChangeHint will
1.102 + // return nsChangeHint_UpdateOverflow for "transform" attribute changes
1.103 + // and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.
1.104 + NotifySVGChanged(TRANSFORM_CHANGED);
1.105 + }
1.106 +
1.107 + return NS_OK;
1.108 +}
