Web Animations API: Bindings for TimedItem.specified with readonly attributes

Source/platform/animation/TimingFunction.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 16 matching lines @@
 
 #include "RuntimeEnabledFeatures.h"
 #include "platform/animation/AnimationUtilities.h" // For blend()
 #include "platform/animation/UnitBezier.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Vector.h"
+#include "wtf/text/StringBuilder.h"
+#include "wtf/text/WTFString.h"
 #include <algorithm>
 
 
 namespace WebCore {
 
-class TimingFunction : public RefCounted<TimingFunction> {
+class PLATFORM_EXPORT TimingFunction : public RefCounted<TimingFunction> {
 public:
 
     enum Type {
         LinearFunction, CubicBezierFunction, StepsFunction, ChainedFunction
     };
 
     virtual ~TimingFunction() { }
 
     Type type() const { return m_type; }
 
+    virtual String toString() const = 0;
+
     // Evaluates the timing function at the given fraction. The accuracy parameter provides a hint as to the required
     // accuracy and is not guaranteed.
-    virtual double evaluate(double fraction, double accuracy) const = 0;
+    virtual double evaluate(double fraction, double accuracy) const =0;
 
 protected:
     TimingFunction(Type type)
         : m_type(type)
     {
     }
 
 private:
     Type m_type;
 };
 
-class LinearTimingFunction FINAL : public TimingFunction {
+class PLATFORM_EXPORT LinearTimingFunction FINAL : public TimingFunction {
 public:
     static PassRefPtr<LinearTimingFunction> create()
     {
         return adoptRef(new LinearTimingFunction);
     }
 
     virtual ~LinearTimingFunction() { }
 
-    virtual double evaluate(double fraction, double) const OVERRIDE
-    {
-        ASSERT_WITH_MESSAGE(fraction >= 0 && fraction <= 1, "Web Animations not yet implemented: Timing function behavior outside the range [0, 1] is not yet specified");
-        return fraction;
-    }
+    virtual String toString() const OVERRIDE;
+
+    virtual double evaluate(double fraction, double) const OVERRIDE;
 
 private:
     LinearTimingFunction()
         : TimingFunction(LinearFunction)
     {
     }
 };
 
-
 // Forward declare so we can friend it below. Don't use in production code!
 class ChainedTimingFunctionTestHelper;
 
-class CubicBezierTimingFunction FINAL : public TimingFunction {
+class PLATFORM_EXPORT CubicBezierTimingFunction FINAL : public TimingFunction {
 public:
     enum SubType {
         Ease,
         EaseIn,
         EaseOut,
         EaseInOut,
         Custom
     };
 
     static PassRefPtr<CubicBezierTimingFunction> create(double x1, double y1, double x2, double y2)
@@ skipping 25 matching lines @@
                 return easeInOut;
             }
         default:
             ASSERT_NOT_REACHED();
             return 0;
         }
     }
 
     virtual ~CubicBezierTimingFunction() { }
 
-    virtual double evaluate(double fraction, double accuracy) const OVERRIDE
-    {
-        ASSERT_WITH_MESSAGE(fraction >= 0 && fraction <= 1, "Web Animations not yet implemented: Timing function behavior outside the range [0, 1] is not yet specified");
-        if (!m_bezier)
-            m_bezier = adoptPtr(new UnitBezier(m_x1, m_y1, m_x2, m_y2));
-        return m_bezier->solve(fraction, accuracy);
-    }
+    virtual String toString() const OVERRIDE;
+
+    virtual double evaluate(double fraction, double accuracy) const OVERRIDE;
 
     double x1() const { return m_x1; }
     double y1() const { return m_y1; }
     double x2() const { return m_x2; }
     double y2() const { return m_y2; }
 
     SubType subType() const { return m_subType; }
 
 private:
     explicit CubicBezierTimingFunction(SubType subType, double x1, double y1, double x2, double y2)
         : TimingFunction(CubicBezierFunction)
         , m_x1(x1)
         , m_y1(y1)
         , m_x2(x2)
         , m_y2(y2)
         , m_subType(subType)
     {
     }
 
     double m_x1;
     double m_y1;
     double m_x2;
     double m_y2;
     SubType m_subType;
     mutable OwnPtr<UnitBezier> m_bezier;
 };
 
-class StepsTimingFunction FINAL : public TimingFunction {
+class PLATFORM_EXPORT StepsTimingFunction FINAL : public TimingFunction {
 public:
     enum SubType {
         Start,
         End,
         Custom
     };
 
     static PassRefPtr<StepsTimingFunction> create(int steps, bool stepAtStart)
     {
         return adoptRef(new StepsTimingFunction(Custom, steps, stepAtStart));
@@ skipping 14 matching lines @@
             }
         default:
             ASSERT_NOT_REACHED();
             return 0;
         }
     }
 
 
     virtual ~StepsTimingFunction() { }
 
-    virtual double evaluate(double fraction, double) const OVERRIDE
-    {
-        ASSERT_WITH_MESSAGE(fraction >= 0 && fraction <= 1, "Web Animations not yet implemented: Timing function behavior outside the range [0, 1] is not yet specified");
-        return std::min(1.0, (floor(m_steps * fraction) + m_stepAtStart) / m_steps);
-    }
+    virtual String toString() const OVERRIDE;
+
+    virtual double evaluate(double fraction, double) const OVERRIDE;
 
     int numberOfSteps() const { return m_steps; }
     bool stepAtStart() const { return m_stepAtStart; }
 
     SubType subType() const { return m_subType; }
 
 private:
     StepsTimingFunction(SubType subType, int steps, bool stepAtStart)
         : TimingFunction(StepsFunction)
         , m_steps(steps)
         , m_stepAtStart(stepAtStart)
         , m_subType(subType)
     {
     }
 
     int m_steps;
     bool m_stepAtStart;
     SubType m_subType;
 };
 
-class ChainedTimingFunction FINAL : public TimingFunction {
+class PLATFORM_EXPORT ChainedTimingFunction FINAL : public TimingFunction {
 public:
     static PassRefPtr<ChainedTimingFunction> create()
     {
         return adoptRef(new ChainedTimingFunction);
     }
 
     void appendSegment(double upperBound, TimingFunction* timingFunction)
     {
         double max = m_segments.isEmpty() ? 0 : m_segments.last().max();
         ASSERT(upperBound > max);
         m_segments.append(Segment(max, upperBound, timingFunction));
     }
-    virtual double evaluate(double fraction, double accuracy) const OVERRIDE
-    {
-        ASSERT_WITH_MESSAGE(fraction >= 0 && fraction <= 1, "Web Animations not yet implemented: Timing function behavior outside the range [0, 1] is not yet specified");
-        ASSERT(!m_segments.isEmpty());
-        ASSERT(m_segments.last().max() == 1);
-        size_t i = 0;
-        const Segment* segment = &m_segments[i++];
-        while (fraction >= segment->max() && i < m_segments.size()) {
-            segment = &m_segments[i++];
-        }
-        return segment->evaluate(fraction, accuracy);
-    }
+
+    virtual String toString() const OVERRIDE;
+
+    virtual double evaluate(double fraction, double accuracy) const OVERRIDE;
 
 private:
     class Segment {
     public:
         Segment(double min, double max, TimingFunction* timingFunction)
             : m_min(min)
             , m_max(max)
             , m_timingFunction(timingFunction)
         { ASSERT(timingFunction); }
 
@@ skipping 14 matching lines @@
         // FIXME: Come up with a public API for the segments and remove this.
         friend class CompositorAnimationsImpl;
         friend class CompositorAnimations;
 
         // Allow the compositor to reverse the timing function.
         friend class CompositorAnimationsTimingFunctionReverser;
 
         // Allow PrintTo/operator== of the segments. Can be removed once
         // ChainedTimingFunction has a public API for segments.
         friend class ChainedTimingFunctionTestHelper;
+        friend class ChainedTimingFunction;
     };
 
     ChainedTimingFunction()
         : TimingFunction(ChainedFunction)
     {
     }
 
     Vector<Segment> m_segments;
 
     // FIXME: Come up with a public API for the segments and remove this.
@@ skipping 15 matching lines @@
         value.type() == TimingFunction::typeName##Function)
 
 DEFINE_TIMING_FUNCTION_TYPE_CASTS(Linear);
 DEFINE_TIMING_FUNCTION_TYPE_CASTS(CubicBezier);
 DEFINE_TIMING_FUNCTION_TYPE_CASTS(Steps);
 DEFINE_TIMING_FUNCTION_TYPE_CASTS(Chained);
 
 } // namespace WebCore
 
 #endif // TimingFunction_h