Add m-esr52 at 52.6.0

1 files changed, 190 insertions, 0 deletions

diff --git a/dom/svg/SVGTransform.h b/dom/svg/SVGTransform.h
new file mode 100644
index 000000000..49c0b03ed
--- /dev/null
+++ b/dom/svg/SVGTransform.h
@@ -0,0 +1,190 @@
+/* -*- 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