1 files changed, 123 insertions, 0 deletions
diff --git a/dom/svg/nsSVGNumber2.h b/dom/svg/nsSVGNumber2.h
new file mode 100644
index 000000000..7a39a5699
--- /dev/null
+++ b/dom/svg/nsSVGNumber2.h
@@ -0,0 +1,123 @@
+/* -*- 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_SVGNUMBER2_H__
+#define __NS_SVGNUMBER2_H__
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsError.h"
+#include "nsISMILAttr.h"
+#include "nsMathUtils.h"
+#include "nsSVGElement.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/FloatingPoint.h"
+#include "mozilla/dom/SVGAnimatedNumber.h"
+
+class nsSMILValue;
+
+namespace mozilla {
+namespace dom {
+class SVGAnimationElement;
+} // namespace dom
+} // namespace mozilla
+
+class nsSVGNumber2
+{
+
+public:
+  void Init(uint8_t aAttrEnum = 0xff, float aValue = 0) {
+    mAnimVal = mBaseVal = aValue;
+    mAttrEnum = aAttrEnum;
+    mIsAnimated = false;
+    mIsBaseSet = false;
+  }
+
+  nsresult SetBaseValueString(const nsAString& aValue,
+                              nsSVGElement *aSVGElement);
+  void GetBaseValueString(nsAString& aValue);
+
+  void SetBaseValue(float aValue, nsSVGElement *aSVGElement);
+  float GetBaseValue() const
+    { return mBaseVal; }
+  void SetAnimValue(float aValue, nsSVGElement *aSVGElement);
+  float GetAnimValue() const
+    { return mAnimVal; }
+
+  // Returns true if the animated value of this number 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::SVGAnimatedNumber>
+  ToDOMAnimatedNumber(nsSVGElement* aSVGElement);
+  // Returns a new nsISMILAttr object that the caller must delete
+  nsISMILAttr* ToSMILAttr(nsSVGElement* aSVGElement);
+
+private:
+
+  float mAnimVal;
+  float mBaseVal;
+  uint8_t mAttrEnum; // element specified tracking for attribute
+  bool mIsAnimated;
+  bool mIsBaseSet;
+
+public:
+  struct DOMAnimatedNumber final : public mozilla::dom::SVGAnimatedNumber
+  {
+    DOMAnimatedNumber(nsSVGNumber2* aVal, nsSVGElement* aSVGElement)
+      : mozilla::dom::SVGAnimatedNumber(aSVGElement)
+      , mVal(aVal)
+    {}
+    virtual ~DOMAnimatedNumber();
+
+    nsSVGNumber2* mVal; // kept alive because it belongs to content
+
+    virtual float BaseVal() override
+    {
+      return mVal->GetBaseValue();
+    }
+    virtual void SetBaseVal(float aValue) override
+    {
+      MOZ_ASSERT(mozilla::IsFinite(aValue));
+      mVal->SetBaseValue(aValue, mSVGElement);
+    }
+
+    // Script may have modified animation parameters or timeline -- DOM getters
+    // need to flush any resample requests to reflect these modifications.
+    virtual float AnimVal() override
+    {
+      mSVGElement->FlushAnimations();
+      return mVal->GetAnimValue();
+    }
+  };
+
+  struct SMILNumber : public nsISMILAttr
+  {
+  public:
+    SMILNumber(nsSVGNumber2* 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.
+    nsSVGNumber2* 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_SVGNUMBER2_H__