1 files changed, 142 insertions, 0 deletions
diff --git a/dom/svg/SVGAnimatedPreserveAspectRatio.h b/dom/svg/SVGAnimatedPreserveAspectRatio.h
new file mode 100644
index 0000000000..6b0a08b7a5
--- /dev/null
+++ b/dom/svg/SVGAnimatedPreserveAspectRatio.h
@@ -0,0 +1,142 @@
+/* -*- 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_SVGANIMATEDPRESERVEASPECTRATIO_H__
+#define MOZILLA_SVGANIMATEDPRESERVEASPECTRATIO_H__
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "nsISMILAttr.h"
+#include "nsSVGElement.h"
+#include "SVGPreserveAspectRatio.h"
+#include "mozilla/Attributes.h"
+
+class nsSMILValue;
+
+namespace mozilla {
+namespace dom {
+class DOMSVGAnimatedPreserveAspectRatio;
+class SVGAnimationElement;
+} // namespace dom
+
+class SVGAnimatedPreserveAspectRatio final
+{
+public:
+  void Init() {
+    mBaseVal.mAlign = SVG_PRESERVEASPECTRATIO_XMIDYMID;
+    mBaseVal.mMeetOrSlice = SVG_MEETORSLICE_MEET;
+    mAnimVal = mBaseVal;
+    mIsAnimated = false;
+    mIsBaseSet = false;
+  }
+
+  nsresult SetBaseValueString(const nsAString& aValue,
+                              nsSVGElement *aSVGElement,
+                              bool aDoSetAttr);
+  void GetBaseValueString(nsAString& aValue) const;
+
+  void SetBaseValue(const SVGPreserveAspectRatio &aValue,
+                    nsSVGElement *aSVGElement);
+  nsresult SetBaseAlign(uint16_t aAlign, nsSVGElement *aSVGElement) {
+    if (aAlign < SVG_ALIGN_MIN_VALID || aAlign > SVG_ALIGN_MAX_VALID) {
+      return NS_ERROR_FAILURE;
+    }
+    SetBaseValue(SVGPreserveAspectRatio(
+                   static_cast<SVGAlign>(aAlign), mBaseVal.GetMeetOrSlice()),
+                 aSVGElement);
+    return NS_OK;
+  }
+  nsresult SetBaseMeetOrSlice(uint16_t aMeetOrSlice, nsSVGElement *aSVGElement) {
+    if (aMeetOrSlice < SVG_MEETORSLICE_MIN_VALID ||
+        aMeetOrSlice > SVG_MEETORSLICE_MAX_VALID) {
+      return NS_ERROR_FAILURE;
+    }
+    SetBaseValue(SVGPreserveAspectRatio(
+                   mBaseVal.GetAlign(), static_cast<SVGMeetOrSlice>(aMeetOrSlice)),
+                 aSVGElement);
+    return NS_OK;
+  }
+  void SetAnimValue(uint64_t aPackedValue, nsSVGElement *aSVGElement);
+
+  const SVGPreserveAspectRatio &GetBaseValue() const
+    { return mBaseVal; }
+  const SVGPreserveAspectRatio &GetAnimValue() const
+    { return mAnimVal; }
+  bool IsAnimated() const
+    { return mIsAnimated; }
+  bool IsExplicitlySet() const
+    { return mIsAnimated || mIsBaseSet; }
+
+  already_AddRefed<mozilla::dom::DOMSVGAnimatedPreserveAspectRatio>
+  ToDOMAnimatedPreserveAspectRatio(nsSVGElement* aSVGElement);
+  // Returns a new nsISMILAttr object that the caller must delete
+  nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement);
+
+private:
+
+  SVGPreserveAspectRatio mAnimVal;
+  SVGPreserveAspectRatio mBaseVal;
+  bool mIsAnimated;
+  bool mIsBaseSet;
+
+public:
+  struct SMILPreserveAspectRatio final : public nsISMILAttr
+  {
+  public:
+    SMILPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal,
+                            nsSVGElement* aSVGElement)
+      : mVal(aVal), mSVGElement(aSVGElement) {}
+
+    // These will stay alive because a nsISMILAttr only lives as long
+    // as the Compositing step, and DOM elements don't get a chance to
+    // die during that.
+    SVGAnimatedPreserveAspectRatio* mVal;
+    nsSVGElement* mSVGElement;
+
+    // nsISMILAttr methods
+    virtual nsresult ValueFromString(const nsAString& aStr,
+                                     const dom::SVGAnimationElement* aSrcElement,
+                                     nsSMILValue& aValue,
+                                     bool& aPreventCachingOfSandwich) const override;
+    virtual nsSMILValue GetBaseValue() const override;
+    virtual void ClearAnimValue() override;
+    virtual nsresult SetAnimValue(const nsSMILValue& aValue) override;
+  };
+};
+
+namespace dom {
+class DOMSVGAnimatedPreserveAspectRatio final : public nsISupports,
+                                                public nsWrapperCache
+{
+  ~DOMSVGAnimatedPreserveAspectRatio();
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMSVGAnimatedPreserveAspectRatio)
+
+  DOMSVGAnimatedPreserveAspectRatio(SVGAnimatedPreserveAspectRatio* aVal,
+                                    nsSVGElement *aSVGElement)
+    : mVal(aVal), mSVGElement(aSVGElement)
+  {
+  }
+
+  // WebIDL
+  nsSVGElement* GetParentObject() const { return mSVGElement; }
+  virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+  // These aren't weak refs because new objects are returned each time
+  already_AddRefed<DOMSVGPreserveAspectRatio> BaseVal();
+  already_AddRefed<DOMSVGPreserveAspectRatio> AnimVal();
+
+protected:
+  // kept alive because it belongs to content:
+  SVGAnimatedPreserveAspectRatio* mVal;
+  RefPtr<nsSVGElement> mSVGElement;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // MOZILLA_SVGANIMATEDPRESERVEASPECTRATIO_H__