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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/SVGTransform.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/SVGTransform.h')
-rw-r--r--dom/svg/SVGTransform.h190
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diff --git a/dom/svg/SVGTransform.h b/dom/svg/SVGTransform.h
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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/. */
+
+#ifndef mozilla_dom_SVGTransform_h
+#define mozilla_dom_SVGTransform_h
+
+#include "DOMSVGTransformList.h"
+#include "nsAutoPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsDebug.h"
+#include "nsID.h"
+#include "nsSVGTransform.h"
+#include "nsWrapperCache.h"
+#include "mozilla/Attributes.h"
+
+class nsSVGElement;
+
+class gfxMatrix;
+
+#define MOZ_SVG_LIST_INDEX_BIT_COUNT 31 // supports > 2 billion list items
+
+namespace mozilla {
+namespace dom {
+
+class SVGMatrix;
+
+/**
+ * DOM wrapper for an SVG transform. See DOMSVGLength.h.
+ */
+class SVGTransform final : public nsWrapperCache
+{
+ friend class AutoChangeTransformNotifier;
+
+public:
+ NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(SVGTransform)
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(SVGTransform)
+
+ /**
+ * Generic ctor for SVGTransform objects that are created for an attribute.
+ */
+ SVGTransform(DOMSVGTransformList *aList,
+ uint32_t aListIndex,
+ bool aIsAnimValItem);
+
+ /**
+ * Ctors for creating the objects returned by:
+ * SVGSVGElement.createSVGTransform(),
+ * SVGSVGElement.createSVGTransformFromMatrix(in SVGMatrix matrix),
+ * SVGTransformList.createSVGTransformFromMatrix(in SVGMatrix matrix)
+ * which do not initially belong to an attribute.
+ */
+ explicit SVGTransform();
+ explicit SVGTransform(const gfxMatrix &aMatrix);
+
+ /**
+ * Ctor for creating an unowned copy. Used with Clone().
+ */
+ explicit SVGTransform(const nsSVGTransform &aMatrix);
+
+ /**
+ * Create an unowned copy of an owned transform. The caller is responsible for
+ * the first AddRef().
+ */
+ SVGTransform* Clone() {
+ NS_ASSERTION(mList, "unexpected caller");
+ return new SVGTransform(InternalItem());
+ }
+
+ bool IsInList() const {
+ return !!mList;
+ }
+
+ /**
+ * In future, if this class is used for non-list transforms, this will be
+ * different to IsInList().
+ */
+ bool HasOwner() const {
+ return !!mList;
+ }
+
+ /**
+ * This method is called to notify this DOM object that it is being inserted
+ * into a list, and give it the information it needs as a result.
+ *
+ * This object MUST NOT already belong to a list when this method is called.
+ * That's not to say that script can't move these DOM objects between
+ * lists - it can - it's just that the logic to handle that (and send out
+ * the necessary notifications) is located elsewhere (in
+ * DOMSVGTransformList).)
+ */
+ void InsertingIntoList(DOMSVGTransformList *aList,
+ uint32_t aListIndex,
+ bool aIsAnimValItem);
+
+ static uint32_t MaxListIndex() {
+ return (1U << MOZ_SVG_LIST_INDEX_BIT_COUNT) - 1;
+ }
+
+ /// This method is called to notify this object that its list index changed.
+ void UpdateListIndex(uint32_t aListIndex) {
+ mListIndex = aListIndex;
+ }
+
+ /**
+ * This method is called to notify this DOM object that it is about to be
+ * removed from its current DOM list so that it can first make a copy of its
+ * internal counterpart's values. (If it didn't do this, then it would
+ * "lose" its value on being removed.)
+ */
+ void RemovingFromList();
+
+ nsSVGTransform ToSVGTransform() const {
+ return Transform();
+ }
+
+ // WebIDL
+ DOMSVGTransformList* GetParentObject() const { return mList; }
+ virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+ uint16_t Type() const;
+ dom::SVGMatrix* GetMatrix();
+ float Angle() const;
+ void SetMatrix(dom::SVGMatrix& matrix, ErrorResult& rv);
+ void SetTranslate(float tx, float ty, ErrorResult& rv);
+ void SetScale(float sx, float sy, ErrorResult& rv);
+ void SetRotate(float angle, float cx, float cy, ErrorResult& rv);
+ void SetSkewX(float angle, ErrorResult& rv);
+ void SetSkewY(float angle, ErrorResult& rv);
+
+protected:
+ ~SVGTransform();
+
+ // Interface for SVGMatrix's use
+ friend class dom::SVGMatrix;
+ bool IsAnimVal() const {
+ return mIsAnimValItem;
+ }
+ const gfxMatrix& Matrixgfx() const {
+ return Transform().GetMatrix();
+ }
+ void SetMatrix(const gfxMatrix& aMatrix);
+
+private:
+ nsSVGElement* Element() {
+ return mList->Element();
+ }
+
+ /**
+ * Get a reference to the internal nsSVGTransform list item that this DOM
+ * wrapper object currently wraps.
+ */
+ nsSVGTransform& InternalItem();
+ const nsSVGTransform& InternalItem() const;
+
+#ifdef DEBUG
+ bool IndexIsValid();
+#endif
+
+ const nsSVGTransform& Transform() const {
+ return HasOwner() ? InternalItem() : *mTransform;
+ }
+ nsSVGTransform& Transform() {
+ return HasOwner() ? InternalItem() : *mTransform;
+ }
+
+ RefPtr<DOMSVGTransformList> mList;
+
+ // Bounds for the following are checked in the ctor, so be sure to update
+ // that if you change the capacity of any of the following.
+
+ uint32_t mListIndex:MOZ_SVG_LIST_INDEX_BIT_COUNT;
+ uint32_t mIsAnimValItem:1;
+
+ // Usually this class acts as a wrapper for an nsSVGTransform object which is
+ // part of a list and is accessed by going via the owning Element.
+ //
+ // However, in some circumstances, objects of this class may not be associated
+ // with any particular list and thus, no internal nsSVGTransform object. In
+ // that case we allocate an nsSVGTransform object on the heap to store the data.
+ nsAutoPtr<nsSVGTransform> mTransform;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#undef MOZ_SVG_LIST_INDEX_BIT_COUNT
+
+#endif // mozilla_dom_SVGTransform_h