third_party/WebKit/Source/core/css/CSSTimingFunctionValue.h

/*
 * Copyright (C) 2007, 2008, 2012 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef CSSTimingFunctionValue_h
#define CSSTimingFunctionValue_h

#include "core/css/CSSValue.h"
#include "platform/animation/TimingFunction.h"
#include "wtf/PassRefPtr.h"

namespace blink {

class CSSCubicBezierTimingFunctionValue : public CSSValue {
 public:
  static CSSCubicBezierTimingFunctionValue* create(double x1,
                                                   double y1,
                                                   double x2,
                                                   double y2) {
    return new CSSCubicBezierTimingFunctionValue(x1, y1, x2, y2);
  }

  String customCSSText() const;

  double x1() const { return m_x1; }
  double y1() const { return m_y1; }
  double x2() const { return m_x2; }
  double y2() const { return m_y2; }

  bool equals(const CSSCubicBezierTimingFunctionValue&) const;

  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
    CSSValue::traceAfterDispatch(visitor);
  }

 private:
  CSSCubicBezierTimingFunctionValue(double x1, double y1, double x2, double y2)
      : CSSValue(CubicBezierTimingFunctionClass),
        m_x1(x1),
        m_y1(y1),
        m_x2(x2),
        m_y2(y2) {}

  double m_x1;
  double m_y1;
  double m_x2;
  double m_y2;
};

DEFINE_CSS_VALUE_TYPE_CASTS(CSSCubicBezierTimingFunctionValue,
                            isCubicBezierTimingFunctionValue());

class CSSStepsTimingFunctionValue : public CSSValue {
 public:
  static CSSStepsTimingFunctionValue* create(
      int steps,
      StepsTimingFunction::StepPosition stepPosition) {
    return new CSSStepsTimingFunctionValue(steps, stepPosition);
  }

  int numberOfSteps() const { return m_steps; }
  StepsTimingFunction::StepPosition getStepPosition() const {
    return m_stepPosition;
  }

  String customCSSText() const;

  bool equals(const CSSStepsTimingFunctionValue&) const;

  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
    CSSValue::traceAfterDispatch(visitor);
  }

 private:
  CSSStepsTimingFunctionValue(int steps,
                              StepsTimingFunction::StepPosition stepPosition)
      : CSSValue(StepsTimingFunctionClass),
        m_steps(steps),
        m_stepPosition(stepPosition) {}

  int m_steps;
  StepsTimingFunction::StepPosition m_stepPosition;
};

DEFINE_CSS_VALUE_TYPE_CASTS(CSSStepsTimingFunctionValue,
                            isStepsTimingFunctionValue());

}  // namespace blink

#endif