From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 dom/smil/nsSMILFloatType.cpp | 92 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 dom/smil/nsSMILFloatType.cpp

(limited to 'dom/smil/nsSMILFloatType.cpp')

diff --git a/dom/smil/nsSMILFloatType.cpp b/dom/smil/nsSMILFloatType.cpp
new file mode 100644
index 000000000..d3e298043
--- /dev/null
+++ b/dom/smil/nsSMILFloatType.cpp
@@ -0,0 +1,92 @@
+/* -*- 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/. */
+
+#include "nsSMILFloatType.h"
+#include "nsSMILValue.h"
+#include "nsDebug.h"
+#include <math.h>
+
+void
+nsSMILFloatType::Init(nsSMILValue& aValue) const
+{
+  NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");
+  aValue.mU.mDouble = 0.0;
+  aValue.mType = this;
+}
+
+void
+nsSMILFloatType::Destroy(nsSMILValue& aValue) const
+{
+  NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
+  aValue.mU.mDouble = 0.0;
+  aValue.mType      = nsSMILNullType::Singleton();
+}
+
+nsresult
+nsSMILFloatType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
+{
+  NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
+  NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
+  aDest.mU.mDouble = aSrc.mU.mDouble;
+  return NS_OK;
+}
+
+bool
+nsSMILFloatType::IsEqual(const nsSMILValue& aLeft,
+                         const nsSMILValue& aRight) const
+{
+  NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
+  NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
+
+  return aLeft.mU.mDouble == aRight.mU.mDouble;
+}
+
+nsresult
+nsSMILFloatType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
+                     uint32_t aCount) const
+{
+  NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
+                  "Trying to add invalid types");
+  NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
+  aDest.mU.mDouble += aValueToAdd.mU.mDouble * aCount;
+  return NS_OK;
+}
+
+nsresult
+nsSMILFloatType::ComputeDistance(const nsSMILValue& aFrom,
+                                 const nsSMILValue& aTo,
+                                 double& aDistance) const
+{
+  NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
+  NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
+
+  const double &from = aFrom.mU.mDouble;
+  const double &to   = aTo.mU.mDouble;
+
+  aDistance = fabs(to - from);
+
+  return NS_OK;
+}
+
+nsresult
+nsSMILFloatType::Interpolate(const nsSMILValue& aStartVal,
+                             const nsSMILValue& aEndVal,
+                             double aUnitDistance,
+                             nsSMILValue& aResult) const
+{
+  NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
+      "Trying to interpolate different types");
+  NS_PRECONDITION(aStartVal.mType == this,
+      "Unexpected types for interpolation");
+  NS_PRECONDITION(aResult.mType   == this, "Unexpected result type");
+
+  const double &startVal = aStartVal.mU.mDouble;
+  const double &endVal   = aEndVal.mU.mDouble;
+
+  aResult.mU.mDouble = (startVal + (endVal - startVal) * aUnitDistance);
+
+  return NS_OK;
+}
-- 
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