Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 86 insertions, 0 deletions

diff --git a/dom/smil/SMILIntegerType.cpp b/dom/smil/SMILIntegerType.cpp
new file mode 100644
index 0000000000..c1ac207836
--- /dev/null
+++ b/dom/smil/SMILIntegerType.cpp
@@ -0,0 +1,86 @@
+/* -*- 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 "SMILIntegerType.h"
+
+#include "mozilla/SMILValue.h"
+#include "nsDebug.h"
+#include <math.h>
+
+namespace mozilla {
+
+void SMILIntegerType::Init(SMILValue& aValue) const {
+  MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
+  aValue.mU.mInt = 0;
+  aValue.mType = this;
+}
+
+void SMILIntegerType::Destroy(SMILValue& aValue) const {
+  MOZ_ASSERT(aValue.mType == this, "Unexpected SMIL value");
+  aValue.mU.mInt = 0;
+  aValue.mType = SMILNullType::Singleton();
+}
+
+nsresult SMILIntegerType::Assign(SMILValue& aDest,
+                                 const SMILValue& aSrc) const {
+  MOZ_ASSERT(aDest.mType == aSrc.mType, "Incompatible SMIL types");
+  MOZ_ASSERT(aDest.mType == this, "Unexpected SMIL value");
+  aDest.mU.mInt = aSrc.mU.mInt;
+  return NS_OK;
+}
+
+bool SMILIntegerType::IsEqual(const SMILValue& aLeft,
+                              const SMILValue& aRight) const {
+  MOZ_ASSERT(aLeft.mType == aRight.mType, "Incompatible SMIL types");
+  MOZ_ASSERT(aLeft.mType == this, "Unexpected type for SMIL value");
+
+  return aLeft.mU.mInt == aRight.mU.mInt;
+}
+
+nsresult SMILIntegerType::Add(SMILValue& aDest, const SMILValue& aValueToAdd,
+                              uint32_t aCount) const {
+  MOZ_ASSERT(aValueToAdd.mType == aDest.mType, "Trying to add invalid types");
+  MOZ_ASSERT(aValueToAdd.mType == this, "Unexpected source type");
+  aDest.mU.mInt += aValueToAdd.mU.mInt * aCount;
+  return NS_OK;
+}
+
+nsresult SMILIntegerType::ComputeDistance(const SMILValue& aFrom,
+                                          const SMILValue& aTo,
+                                          double& aDistance) const {
+  MOZ_ASSERT(aFrom.mType == aTo.mType, "Trying to compare different types");
+  MOZ_ASSERT(aFrom.mType == this, "Unexpected source type");
+  aDistance = fabs(double(aTo.mU.mInt - aFrom.mU.mInt));
+  return NS_OK;
+}
+
+nsresult SMILIntegerType::Interpolate(const SMILValue& aStartVal,
+                                      const SMILValue& aEndVal,
+                                      double aUnitDistance,
+                                      SMILValue& aResult) const {
+  MOZ_ASSERT(aStartVal.mType == aEndVal.mType,
+             "Trying to interpolate different types");
+  MOZ_ASSERT(aStartVal.mType == this, "Unexpected types for interpolation");
+  MOZ_ASSERT(aResult.mType == this, "Unexpected result type");
+
+  const double startVal = double(aStartVal.mU.mInt);
+  const double endVal = double(aEndVal.mU.mInt);
+  const double currentVal = startVal + (endVal - startVal) * aUnitDistance;
+
+  // When currentVal is exactly midway between its two nearest integers, we
+  // jump to the "next" integer to provide simple, easy to remember and
+  // consistent behaviour (from the SMIL author's point of view).
+
+  if (startVal < endVal) {
+    aResult.mU.mInt = int64_t(floor(currentVal + 0.5));  // round mid up
+  } else {
+    aResult.mU.mInt = int64_t(ceil(currentVal - 0.5));  // round mid down
+  }
+
+  return NS_OK;
+}
+
+}  // namespace mozilla