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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/svg/SVGTransformableElement.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/SVGTransformableElement.cpp')
-rw-r--r--dom/svg/SVGTransformableElement.cpp260
1 files changed, 260 insertions, 0 deletions
diff --git a/dom/svg/SVGTransformableElement.cpp b/dom/svg/SVGTransformableElement.cpp
new file mode 100644
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+++ b/dom/svg/SVGTransformableElement.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include "gfx2DGlue.h"
+#include "mozilla/dom/SVGAnimatedTransformList.h"
+#include "mozilla/dom/SVGGraphicsElementBinding.h"
+#include "mozilla/dom/SVGTransformableElement.h"
+#include "mozilla/dom/SVGMatrix.h"
+#include "mozilla/dom/SVGSVGElement.h"
+#include "nsContentUtils.h"
+#include "nsIDOMMutationEvent.h"
+#include "nsIFrame.h"
+#include "nsISVGChildFrame.h"
+#include "mozilla/dom/SVGRect.h"
+#include "nsSVGUtils.h"
+#include "SVGContentUtils.h"
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace dom {
+
+already_AddRefed<SVGAnimatedTransformList>
+SVGTransformableElement::Transform()
+{
+ // We're creating a DOM wrapper, so we must tell GetAnimatedTransformList
+ // to allocate the SVGAnimatedTransformList if it hasn't already done so:
+ return SVGAnimatedTransformList::GetDOMWrapper(
+ GetAnimatedTransformList(DO_ALLOCATE), this);
+
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+NS_IMETHODIMP_(bool)
+SVGTransformableElement::IsAttributeMapped(const nsIAtom* name) const
+{
+ static const MappedAttributeEntry* const map[] = {
+ sColorMap,
+ sFillStrokeMap,
+ sGraphicsMap
+ };
+
+ return FindAttributeDependence(name, map) ||
+ nsSVGElement::IsAttributeMapped(name);
+}
+
+nsChangeHint
+SVGTransformableElement::GetAttributeChangeHint(const nsIAtom* aAttribute,
+ int32_t aModType) const
+{
+ nsChangeHint retval =
+ nsSVGElement::GetAttributeChangeHint(aAttribute, aModType);
+ if (aAttribute == nsGkAtoms::transform ||
+ aAttribute == nsGkAtoms::mozAnimateMotionDummyAttr) {
+ nsIFrame* frame =
+ const_cast<SVGTransformableElement*>(this)->GetPrimaryFrame();
+ retval |= nsChangeHint_InvalidateRenderingObservers;
+ if (!frame || (frame->GetStateBits() & NS_FRAME_IS_NONDISPLAY)) {
+ return retval;
+ }
+
+ bool isAdditionOrRemoval = false;
+ if (aModType == nsIDOMMutationEvent::ADDITION ||
+ aModType == nsIDOMMutationEvent::REMOVAL) {
+ isAdditionOrRemoval = true;
+ } else {
+ MOZ_ASSERT(aModType == nsIDOMMutationEvent::MODIFICATION,
+ "Unknown modification type.");
+ if (!mTransforms ||
+ !mTransforms->HasTransform() ||
+ !mTransforms->HadTransformBeforeLastBaseValChange()) {
+ // New or old value is empty; this is effectively addition or removal.
+ isAdditionOrRemoval = true;
+ }
+ }
+
+ if (isAdditionOrRemoval) {
+ // Reconstruct the frame tree to handle stacking context changes:
+ retval |= nsChangeHint_ReconstructFrame;
+ } else {
+ // We just assume the old and new transforms are different.
+ retval |= nsChangeHint_UpdatePostTransformOverflow |
+ nsChangeHint_UpdateTransformLayer;
+ }
+ }
+ return retval;
+}
+
+bool
+SVGTransformableElement::IsEventAttributeName(nsIAtom* aName)
+{
+ return nsContentUtils::IsEventAttributeName(aName, EventNameType_SVGGraphic);
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement overrides
+
+gfxMatrix
+SVGTransformableElement::PrependLocalTransformsTo(
+ const gfxMatrix &aMatrix,
+ SVGTransformTypes aWhich) const
+{
+ return SVGContentUtils::PrependLocalTransformsTo(
+ aMatrix, aWhich, mAnimateMotionTransform, mTransforms);
+}
+
+const gfx::Matrix*
+SVGTransformableElement::GetAnimateMotionTransform() const
+{
+ return mAnimateMotionTransform.get();
+}
+
+void
+SVGTransformableElement::SetAnimateMotionTransform(const gfx::Matrix* aMatrix)
+{
+ if ((!aMatrix && !mAnimateMotionTransform) ||
+ (aMatrix && mAnimateMotionTransform && *aMatrix == *mAnimateMotionTransform)) {
+ return;
+ }
+ bool transformSet = mTransforms && mTransforms->IsExplicitlySet();
+ bool prevSet = mAnimateMotionTransform || transformSet;
+ mAnimateMotionTransform = aMatrix ? new gfx::Matrix(*aMatrix) : nullptr;
+ bool nowSet = mAnimateMotionTransform || transformSet;
+ int32_t modType;
+ if (prevSet && !nowSet) {
+ modType = nsIDOMMutationEvent::REMOVAL;
+ } else if(!prevSet && nowSet) {
+ modType = nsIDOMMutationEvent::ADDITION;
+ } else {
+ modType = nsIDOMMutationEvent::MODIFICATION;
+ }
+ DidAnimateTransformList(modType);
+ nsIFrame* frame = GetPrimaryFrame();
+ if (frame) {
+ // If the result of this transform and any other transforms on this frame
+ // is the identity matrix, then DoApplyRenderingChangeToTree won't handle
+ // our nsChangeHint_UpdateTransformLayer hint since aFrame->IsTransformed()
+ // will return false. That's fine, but we still need to schedule a repaint,
+ // and that won't otherwise happen. Since it's cheap to call SchedulePaint,
+ // we don't bother to check IsTransformed().
+ frame->SchedulePaint();
+ }
+}
+
+nsSVGAnimatedTransformList*
+SVGTransformableElement::GetAnimatedTransformList(uint32_t aFlags)
+{
+ if (!mTransforms && (aFlags & DO_ALLOCATE)) {
+ mTransforms = new nsSVGAnimatedTransformList();
+ }
+ return mTransforms;
+}
+
+nsSVGElement*
+SVGTransformableElement::GetNearestViewportElement()
+{
+ return SVGContentUtils::GetNearestViewportElement(this);
+}
+
+nsSVGElement*
+SVGTransformableElement::GetFarthestViewportElement()
+{
+ return SVGContentUtils::GetOuterSVGElement(this);
+}
+
+already_AddRefed<SVGIRect>
+SVGTransformableElement::GetBBox(const SVGBoundingBoxOptions& aOptions,
+ ErrorResult& rv)
+{
+ nsIFrame* frame = GetPrimaryFrame(Flush_Layout);
+
+ if (!frame || (frame->GetStateBits() & NS_FRAME_IS_NONDISPLAY)) {
+ rv.Throw(NS_ERROR_FAILURE);
+ return nullptr;
+ }
+ nsISVGChildFrame* svgframe = do_QueryFrame(frame);
+ if (!svgframe) {
+ rv.Throw(NS_ERROR_NOT_IMPLEMENTED); // XXX: outer svg
+ return nullptr;
+ }
+
+ if (!NS_SVGNewGetBBoxEnabled()) {
+ return NS_NewSVGRect(this, ToRect(nsSVGUtils::GetBBox(frame)));
+ } else {
+ uint32_t flags = 0;
+ if (aOptions.mFill) {
+ flags |= nsSVGUtils::eBBoxIncludeFill;
+ }
+ if (aOptions.mStroke) {
+ flags |= nsSVGUtils::eBBoxIncludeStroke;
+ }
+ if (aOptions.mMarkers) {
+ flags |= nsSVGUtils::eBBoxIncludeMarkers;
+ }
+ if (aOptions.mClipped) {
+ flags |= nsSVGUtils::eBBoxIncludeClipped;
+ }
+ if (flags == 0) {
+ return NS_NewSVGRect(this,0,0,0,0);
+ }
+ if (flags == nsSVGUtils::eBBoxIncludeMarkers ||
+ flags == nsSVGUtils::eBBoxIncludeClipped) {
+ flags |= nsSVGUtils::eBBoxIncludeFill;
+ }
+ return NS_NewSVGRect(this, ToRect(nsSVGUtils::GetBBox(frame, flags)));
+ }
+}
+
+already_AddRefed<SVGMatrix>
+SVGTransformableElement::GetCTM()
+{
+ nsIDocument* currentDoc = GetComposedDoc();
+ if (currentDoc) {
+ // Flush all pending notifications so that our frames are up to date
+ currentDoc->FlushPendingNotifications(Flush_Layout);
+ }
+ gfx::Matrix m = SVGContentUtils::GetCTM(this, false);
+ RefPtr<SVGMatrix> mat = m.IsSingular() ? nullptr : new SVGMatrix(ThebesMatrix(m));
+ return mat.forget();
+}
+
+already_AddRefed<SVGMatrix>
+SVGTransformableElement::GetScreenCTM()
+{
+ nsIDocument* currentDoc = GetComposedDoc();
+ if (currentDoc) {
+ // Flush all pending notifications so that our frames are up to date
+ currentDoc->FlushPendingNotifications(Flush_Layout);
+ }
+ gfx::Matrix m = SVGContentUtils::GetCTM(this, true);
+ RefPtr<SVGMatrix> mat = m.IsSingular() ? nullptr : new SVGMatrix(ThebesMatrix(m));
+ return mat.forget();
+}
+
+already_AddRefed<SVGMatrix>
+SVGTransformableElement::GetTransformToElement(SVGGraphicsElement& aElement,
+ ErrorResult& rv)
+{
+ // the easiest way to do this (if likely to increase rounding error):
+ RefPtr<SVGMatrix> ourScreenCTM = GetScreenCTM();
+ RefPtr<SVGMatrix> targetScreenCTM = aElement.GetScreenCTM();
+ if (!ourScreenCTM || !targetScreenCTM) {
+ rv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
+ return nullptr;
+ }
+ RefPtr<SVGMatrix> tmp = targetScreenCTM->Inverse(rv);
+ if (rv.Failed()) return nullptr;
+
+ RefPtr<SVGMatrix> mat = tmp->Multiply(*ourScreenCTM);
+ return mat.forget();
+}
+
+} // namespace dom
+} // namespace mozilla
+