1 files changed, 37 insertions, 0 deletions
diff --git a/layout/style/nsTimingFunction.h b/layout/style/nsTimingFunction.h
new file mode 100644
index 0000000000..92c9d399bd
--- /dev/null
+++ b/layout/style/nsTimingFunction.h
@@ -0,0 +1,37 @@
+/* -*- 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 nsTimingFunction_h
+#define nsTimingFunction_h
+
+#include "mozilla/ServoStyleConsts.h"
+
+struct nsTimingFunction {
+  mozilla::StyleComputedTimingFunction mTiming;
+
+  explicit nsTimingFunction(
+      mozilla::StyleTimingKeyword aKeyword = mozilla::StyleTimingKeyword::Ease)
+      : mTiming(mozilla::StyleComputedTimingFunction::Keyword(aKeyword)) {}
+
+  nsTimingFunction(float x1, float y1, float x2, float y2)
+      : mTiming(mozilla::StyleComputedTimingFunction::CubicBezier(x1, y1, x2,
+                                                                  y2)) {}
+
+  bool IsLinear() const {
+    return mTiming.IsKeyword() &&
+           mTiming.AsKeyword() == mozilla::StyleTimingKeyword::Linear;
+  }
+
+  bool operator==(const nsTimingFunction& aOther) const {
+    return mTiming == aOther.mTiming;
+  }
+
+  bool operator!=(const nsTimingFunction& aOther) const {
+    return !(*this == aOther);
+  }
+};
+
+#endif  // nsTimingFunction_h