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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/svg/SVGTransformableElement.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/svg/SVGTransformableElement.cpp')
-rw-r--r--dom/svg/SVGTransformableElement.cpp151
1 files changed, 151 insertions, 0 deletions
diff --git a/dom/svg/SVGTransformableElement.cpp 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 "SVGTransformableElement.h"
+
+#include "DOMSVGAnimatedTransformList.h"
+#include "mozilla/dom/MutationEventBinding.h"
+#include "nsContentUtils.h"
+#include "nsIFrame.h"
+
+using namespace mozilla::gfx;
+
+namespace mozilla::dom {
+
+already_AddRefed<DOMSVGAnimatedTransformList>
+SVGTransformableElement::Transform() {
+ // We're creating a DOM wrapper, so we must tell GetAnimatedTransformList
+ // to allocate the DOMSVGAnimatedTransformList if it hasn't already done so:
+ return DOMSVGAnimatedTransformList::GetDOMWrapper(
+ GetAnimatedTransformList(DO_ALLOCATE), this);
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+nsChangeHint SVGTransformableElement::GetAttributeChangeHint(
+ const nsAtom* aAttribute, int32_t aModType) const {
+ nsChangeHint retval =
+ SVGElement::GetAttributeChangeHint(aAttribute, aModType);
+ if (aAttribute == nsGkAtoms::transform ||
+ aAttribute == nsGkAtoms::mozAnimateMotionDummyAttr) {
+ nsIFrame* frame =
+ const_cast<SVGTransformableElement*>(this)->GetPrimaryFrame();
+ retval |= nsChangeHint_InvalidateRenderingObservers;
+ if (!frame || frame->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) {
+ return retval;
+ }
+
+ bool isAdditionOrRemoval = false;
+ if (aModType == MutationEvent_Binding::ADDITION ||
+ aModType == MutationEvent_Binding::REMOVAL) {
+ isAdditionOrRemoval = true;
+ } else {
+ MOZ_ASSERT(aModType == MutationEvent_Binding::MODIFICATION,
+ "Unknown modification type.");
+ if (!mTransforms || !mTransforms->HasTransform()) {
+ // New value is empty, treat as removal.
+ // FIXME: Should we just rely on CreatedOrRemovedOnLastChange?
+ isAdditionOrRemoval = true;
+ } else if (mTransforms->CreatedOrRemovedOnLastChange()) {
+ // Old value was empty, treat as addition.
+ isAdditionOrRemoval = true;
+ }
+ }
+
+ if (isAdditionOrRemoval) {
+ retval |= nsChangeHint_ComprehensiveAddOrRemoveTransform;
+ } else {
+ // We just assume the old and new transforms are different.
+ retval |= nsChangeHint_UpdatePostTransformOverflow |
+ nsChangeHint_UpdateTransformLayer;
+ }
+ }
+ return retval;
+}
+
+bool SVGTransformableElement::IsEventAttributeNameInternal(nsAtom* aName) {
+ return nsContentUtils::IsEventAttributeName(aName, EventNameType_SVGGraphic);
+}
+
+//----------------------------------------------------------------------
+// SVGElement overrides
+
+gfxMatrix SVGTransformableElement::PrependLocalTransformsTo(
+ const gfxMatrix& aMatrix, SVGTransformTypes aWhich) const {
+ if (aWhich == eChildToUserSpace) {
+ // We don't have any eUserSpaceToParent transforms. (Sub-classes that do
+ // must override this function and handle that themselves.)
+ return aMatrix;
+ }
+ return GetUserToParentTransform(mAnimateMotionTransform.get(),
+ mTransforms.get()) *
+ aMatrix;
+}
+
+const gfx::Matrix* SVGTransformableElement::GetAnimateMotionTransform() const {
+ return mAnimateMotionTransform.get();
+}
+
+void SVGTransformableElement::SetAnimateMotionTransform(
+ const gfx::Matrix* aMatrix) {
+ if ((!aMatrix && !mAnimateMotionTransform) ||
+ (aMatrix && mAnimateMotionTransform &&
+ aMatrix->FuzzyEquals(*mAnimateMotionTransform))) {
+ return;
+ }
+ bool transformSet = mTransforms && mTransforms->IsExplicitlySet();
+ bool prevSet = mAnimateMotionTransform || transformSet;
+ mAnimateMotionTransform =
+ aMatrix ? MakeUnique<gfx::Matrix>(*aMatrix) : nullptr;
+ bool nowSet = mAnimateMotionTransform || transformSet;
+ int32_t modType;
+ if (prevSet && !nowSet) {
+ modType = MutationEvent_Binding::REMOVAL;
+ } else if (!prevSet && nowSet) {
+ modType = MutationEvent_Binding::ADDITION;
+ } else {
+ modType = MutationEvent_Binding::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();
+ }
+}
+
+SVGAnimatedTransformList* SVGTransformableElement::GetAnimatedTransformList(
+ uint32_t aFlags) {
+ if (!mTransforms && (aFlags & DO_ALLOCATE)) {
+ mTransforms = MakeUnique<SVGAnimatedTransformList>();
+ }
+ return mTransforms.get();
+}
+
+/* static */
+gfxMatrix SVGTransformableElement::GetUserToParentTransform(
+ const gfx::Matrix* aAnimateMotionTransform,
+ const SVGAnimatedTransformList* aTransforms) {
+ gfxMatrix result;
+
+ if (aAnimateMotionTransform) {
+ result.PreMultiply(ThebesMatrix(*aAnimateMotionTransform));
+ }
+
+ if (aTransforms) {
+ result.PreMultiply(aTransforms->GetAnimValue().GetConsolidationMatrix());
+ }
+
+ return result;
+}
+
+} // namespace mozilla::dom