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// Copyright 2014 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 InterpolableValue_h
#define InterpolableValue_h
#include "core/animation/AnimatableValue.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/Vector.h"
namespace WebCore {
class InterpolableValue : public NoBaseWillBeGarbageCollected<InterpolableValue> {
DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(InterpolableValue);
public:
virtual bool isNumber() const { return false; }
virtual bool isBool() const { return false; }
virtual bool isList() const { return false; }
virtual bool isAnimatableValue() const { return false; }
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> clone() const = 0;
virtual void trace(Visitor*) { }
private:
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> interpolate(const InterpolableValue &to, const double progress) const = 0;
friend class Interpolation;
// Keep interpolate private, but allow calls within the hierarchy without
// knowledge of type.
friend class DeferredLegacyStyleInterpolation;
friend class InterpolableNumber;
friend class InterpolableBool;
friend class InterpolableList;
};
class InterpolableNumber : public InterpolableValue {
public:
static PassOwnPtrWillBeRawPtr<InterpolableNumber> create(double value)
{
return adoptPtrWillBeNoop(new InterpolableNumber(value));
}
virtual bool isNumber() const OVERRIDE FINAL { return true; }
double value() const { return m_value; }
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> clone() const OVERRIDE FINAL { return create(m_value); }
virtual void trace(Visitor* visitor) OVERRIDE { InterpolableValue::trace(visitor); }
private:
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> interpolate(const InterpolableValue &to, const double progress) const OVERRIDE FINAL;
double m_value;
explicit InterpolableNumber(double value)
: m_value(value)
{
}
};
class InterpolableBool : public InterpolableValue {
public:
static PassOwnPtrWillBeRawPtr<InterpolableBool> create(bool value)
{
return adoptPtrWillBeNoop(new InterpolableBool(value));
}
virtual bool isBool() const OVERRIDE FINAL { return true; }
bool value() const { return m_value; }
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> clone() const OVERRIDE FINAL { return create(m_value); }
virtual void trace(Visitor* visitor) OVERRIDE { InterpolableValue::trace(visitor); }
private:
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> interpolate(const InterpolableValue &to, const double progress) const OVERRIDE FINAL;
bool m_value;
explicit InterpolableBool(bool value)
: m_value(value)
{
}
};
class InterpolableList : public InterpolableValue {
public:
static PassOwnPtrWillBeRawPtr<InterpolableList> create(const InterpolableList &other)
{
return adoptPtrWillBeNoop(new InterpolableList(other));
}
static PassOwnPtrWillBeRawPtr<InterpolableList> create(size_t size)
{
return adoptPtrWillBeNoop(new InterpolableList(size));
}
virtual bool isList() const OVERRIDE FINAL { return true; }
void set(size_t position, PassOwnPtrWillBeRawPtr<InterpolableValue> value)
{
ASSERT(position < m_size);
m_values[position] = value;
}
const InterpolableValue* get(size_t position) const
{
ASSERT(position < m_size);
return m_values[position].get();
}
size_t length() const { return m_size; }
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> clone() const OVERRIDE FINAL { return create(*this); }
virtual void trace(Visitor*) OVERRIDE;
private:
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> interpolate(const InterpolableValue &other, const double progress) const OVERRIDE FINAL;
explicit InterpolableList(size_t size)
: m_size(size)
, m_values(m_size)
{
}
InterpolableList(const InterpolableList& other)
: m_size(other.m_size)
, m_values(m_size)
{
for (size_t i = 0; i < m_size; i++)
set(i, other.m_values[i]->clone());
}
size_t m_size;
WillBeHeapVector<OwnPtrWillBeMember<InterpolableValue> > m_values;
};
// FIXME: Remove this when we can.
class InterpolableAnimatableValue : public InterpolableValue {
public:
static PassOwnPtrWillBeRawPtr<InterpolableAnimatableValue> create(PassRefPtrWillBeRawPtr<AnimatableValue> value)
{
return adoptPtrWillBeNoop(new InterpolableAnimatableValue(value));
}
virtual bool isAnimatableValue() const OVERRIDE FINAL { return true; }
AnimatableValue* value() const { return m_value.get(); }
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> clone() const OVERRIDE FINAL { return create(m_value); }
virtual void trace(Visitor*) OVERRIDE;
private:
virtual PassOwnPtrWillBeRawPtr<InterpolableValue> interpolate(const InterpolableValue &other, const double progress) const OVERRIDE FINAL;
RefPtrWillBeMember<AnimatableValue> m_value;
InterpolableAnimatableValue(PassRefPtrWillBeRawPtr<AnimatableValue> value)
: m_value(value)
{
}
};
DEFINE_TYPE_CASTS(InterpolableNumber, InterpolableValue, value, value->isNumber(), value.isNumber());
DEFINE_TYPE_CASTS(InterpolableBool, InterpolableValue, value, value->isBool(), value.isBool());
DEFINE_TYPE_CASTS(InterpolableList, InterpolableValue, value, value->isList(), value.isList());
DEFINE_TYPE_CASTS(InterpolableAnimatableValue, InterpolableValue, value, value->isAnimatableValue(), value.isAnimatableValue());
}
#endif
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