1 files changed, 131 insertions, 0 deletions
diff --git a/dom/svg/nsSVGIntegerPair.h b/dom/svg/nsSVGIntegerPair.h
new file mode 100644
index 000000000..b3eec328a
--- /dev/null
+++ b/dom/svg/nsSVGIntegerPair.h
@@ -0,0 +1,131 @@
+/* -*- 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 __NS_SVGINTEGERPAIR_H__
+#define __NS_SVGINTEGERPAIR_H__
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "nsISMILAttr.h"
+#include "nsSVGElement.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/dom/SVGAnimatedInteger.h"
+
+class nsSMILValue;
+
+namespace mozilla {
+namespace dom {
+class SVGAnimationElement;
+} // namespace dom
+} // namespace mozilla
+
+class nsSVGIntegerPair
+{
+
+public:
+  enum PairIndex {
+    eFirst,
+    eSecond
+  };
+
+  void Init(uint8_t aAttrEnum = 0xff, int32_t aValue1 = 0, int32_t aValue2 = 0) {
+    mAnimVal[0] = mBaseVal[0] = aValue1;
+    mAnimVal[1] = mBaseVal[1] = aValue2;
+    mAttrEnum = aAttrEnum;
+    mIsAnimated = false;
+    mIsBaseSet = false;
+  }
+
+  nsresult SetBaseValueString(const nsAString& aValue,
+                              nsSVGElement *aSVGElement);
+  void GetBaseValueString(nsAString& aValue) const;
+
+  void SetBaseValue(int32_t aValue, PairIndex aIndex, nsSVGElement *aSVGElement);
+  void SetBaseValues(int32_t aValue1, int32_t aValue2, nsSVGElement *aSVGElement);
+  int32_t GetBaseValue(PairIndex aIndex) const
+    { return mBaseVal[aIndex == eFirst ? 0 : 1]; }
+  void SetAnimValue(const int32_t aValue[2], nsSVGElement *aSVGElement);
+  int32_t GetAnimValue(PairIndex aIndex) const
+    { return mAnimVal[aIndex == eFirst ? 0 : 1]; }
+
+  // Returns true if the animated value of this integer has been explicitly
+  // set (either by animation, or by taking on the base value which has been
+  // explicitly set by markup or a DOM call), false otherwise.
+  // If this returns false, the animated value is still valid, that is,
+  // useable, and represents the default base value of the attribute.
+  bool IsExplicitlySet() const
+    { return mIsAnimated || mIsBaseSet; }
+
+  already_AddRefed<mozilla::dom::SVGAnimatedInteger>
+    ToDOMAnimatedInteger(PairIndex aIndex,
+                         nsSVGElement* aSVGElement);
+   // Returns a new nsISMILAttr object that the caller must delete
+  nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement);
+
+private:
+
+  int32_t mAnimVal[2];
+  int32_t mBaseVal[2];
+  uint8_t mAttrEnum; // element specified tracking for attribute
+  bool mIsAnimated;
+  bool mIsBaseSet;
+
+public:
+  struct DOMAnimatedInteger final : public mozilla::dom::SVGAnimatedInteger
+  {
+    DOMAnimatedInteger(nsSVGIntegerPair* aVal, PairIndex aIndex,
+                       nsSVGElement* aSVGElement)
+      : mozilla::dom::SVGAnimatedInteger(aSVGElement)
+      , mVal(aVal)
+      , mIndex(aIndex)
+    {}
+    virtual ~DOMAnimatedInteger();
+
+    nsSVGIntegerPair* mVal; // kept alive because it belongs to content
+    PairIndex mIndex; // are we the first or second integer
+
+    virtual int32_t BaseVal() override
+    {
+      return mVal->GetBaseValue(mIndex);
+    }
+    virtual void SetBaseVal(int32_t aValue) override
+    {
+      mVal->SetBaseValue(aValue, mIndex, mSVGElement);
+    }
+
+    // Script may have modified animation parameters or timeline -- DOM getters
+    // need to flush any resample requests to reflect these modifications.
+    virtual int32_t AnimVal() override
+    {
+      mSVGElement->FlushAnimations();
+      return mVal->GetAnimValue(mIndex);
+    }
+  };
+
+  struct SMILIntegerPair : public nsISMILAttr
+  {
+  public:
+    SMILIntegerPair(nsSVGIntegerPair* 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.
+    nsSVGIntegerPair* mVal;
+    nsSVGElement* mSVGElement;
+
+    // nsISMILAttr methods
+    virtual nsresult ValueFromString(const nsAString& aStr,
+                                     const mozilla::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;
+  };
+};
+
+#endif //__NS_SVGINTEGERPAIR_H__