import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/svg/SVGIntegerPairSMILType.cpp

@@ -0,0 +1,108 @@
+/* -*- 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 "SVGIntegerPairSMILType.h"
+#include "nsSMILValue.h"
+#include "nsMathUtils.h"
+#include "nsDebug.h"
+
+namespace mozilla {
+
+void
+SVGIntegerPairSMILType::Init(nsSMILValue& aValue) const
+{
+  MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
+
+  aValue.mU.mIntPair[0] = 0;
+  aValue.mU.mIntPair[1] = 0;
+  aValue.mType = this;
+}
+
+void
+SVGIntegerPairSMILType::Destroy(nsSMILValue& aValue) const
+{
+  NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
+  aValue.mU.mIntPair[0] = 0;
+  aValue.mU.mIntPair[1] = 0;
+  aValue.mType = nsSMILNullType::Singleton();
+}
+
+nsresult
+SVGIntegerPairSMILType::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.mIntPair[0] = aSrc.mU.mIntPair[0];
+  aDest.mU.mIntPair[1] = aSrc.mU.mIntPair[1];
+  return NS_OK;
+}
+
+bool
+SVGIntegerPairSMILType::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.mIntPair[0] == aRight.mU.mIntPair[0] &&
+         aLeft.mU.mIntPair[1] == aRight.mU.mIntPair[1];
+}
+
+nsresult
+SVGIntegerPairSMILType::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.mIntPair[0] += aValueToAdd.mU.mIntPair[0] * aCount;
+  aDest.mU.mIntPair[1] += aValueToAdd.mU.mIntPair[1] * aCount;
+
+  return NS_OK;
+}
+
+nsresult
+SVGIntegerPairSMILType::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");
+
+  double delta[2];
+  delta[0] = aTo.mU.mIntPair[0] - aFrom.mU.mIntPair[0];
+  delta[1] = aTo.mU.mIntPair[1] - aFrom.mU.mIntPair[1];
+
+  aDistance = NS_hypot(delta[0], delta[1]);
+  return NS_OK;
+}
+
+nsresult
+SVGIntegerPairSMILType::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");
+
+  double currentVal[2];
+  currentVal[0] = aStartVal.mU.mIntPair[0] +
+                  (aEndVal.mU.mIntPair[0] - aStartVal.mU.mIntPair[0]) * aUnitDistance;
+  currentVal[1] = aStartVal.mU.mIntPair[1] +
+                  (aEndVal.mU.mIntPair[1] - aStartVal.mU.mIntPair[1]) * aUnitDistance;
+
+  aResult.mU.mIntPair[0] = NS_lround(currentVal[0]);
+  aResult.mU.mIntPair[1] = NS_lround(currentVal[1]);
+  return NS_OK;
+}
+
+} // namespace mozilla