1 files changed, 59 insertions, 0 deletions
diff --git a/cc/timing_function.h b/cc/timing_function.h
index 638cbb2..993ab87 100644
--- a/cc/timing_function.h
+++ b/cc/timing_function.h
@@ -1,3 +1,62 @@
 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
+
+#ifndef CCTimingFunction_h
+#define CCTimingFunction_h
+
+#include "CCAnimationCurve.h"
+#include "UnitBezier.h"
+
+namespace cc {
+
+// See http://www.w3.org/TR/css3-transitions/.
+class CCTimingFunction : public CCFloatAnimationCurve {
+public:
+    virtual ~CCTimingFunction();
+
+    // Partial implementation of CCFloatAnimationCurve.
+    virtual double duration() const OVERRIDE;
+
+protected:
+    CCTimingFunction();
+};
+
+class CCCubicBezierTimingFunction : public CCTimingFunction {
+public:
+    static scoped_ptr<CCCubicBezierTimingFunction> create(double x1, double y1, double x2, double y2);
+    virtual ~CCCubicBezierTimingFunction();
+
+    // Partial implementation of CCFloatAnimationCurve.
+    virtual float getValue(double time) const OVERRIDE;
+    virtual scoped_ptr<CCAnimationCurve> clone() const OVERRIDE;
+
+protected:
+    CCCubicBezierTimingFunction(double x1, double y1, double x2, double y2);
+
+    UnitBezier m_curve;
+};
+
+class CCEaseTimingFunction {
+public:
+    static scoped_ptr<CCTimingFunction> create();
+};
+
+class CCEaseInTimingFunction {
+public:
+    static scoped_ptr<CCTimingFunction> create();
+};
+
+class CCEaseOutTimingFunction {
+public:
+    static scoped_ptr<CCTimingFunction> create();
+};
+
+class CCEaseInOutTimingFunction {
+public:
+    static scoped_ptr<CCTimingFunction> create();
+};
+
+} // namespace cc
+
+#endif // CCTimingFunction_h