1/*
2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef CSSTimingFunctionValue_h
27#define CSSTimingFunctionValue_h
28
29#include "CSSValue.h"
30#include <wtf/PassRefPtr.h>
31
32namespace WebCore {
33
34class CSSTimingFunctionValue : public CSSValue {
35public:
36    virtual String cssText() const = 0;
37
38    virtual bool isLinearTimingFunctionValue() const { return false; }
39    virtual bool isCubicBezierTimingFunctionValue() const { return false; }
40    virtual bool isStepsTimingFunctionValue() const { return false; }
41
42protected:
43    CSSTimingFunctionValue()
44    {
45    }
46
47    virtual bool isTimingFunctionValue() const { return true; }
48};
49
50class CSSLinearTimingFunctionValue : public CSSTimingFunctionValue {
51public:
52    static PassRefPtr<CSSLinearTimingFunctionValue> create()
53    {
54        return adoptRef(new CSSLinearTimingFunctionValue);
55    }
56
57private:
58    CSSLinearTimingFunctionValue()
59    {
60    }
61
62    virtual String cssText() const;
63
64    virtual bool isLinearTimingFunctionValue() const { return true; }
65};
66
67class CSSCubicBezierTimingFunctionValue : public CSSTimingFunctionValue {
68public:
69    static PassRefPtr<CSSCubicBezierTimingFunctionValue> create(double x1, double y1, double x2, double y2)
70    {
71        return adoptRef(new CSSCubicBezierTimingFunctionValue(x1, y1, x2, y2));
72    }
73
74    double x1() const { return m_x1; }
75    double y1() const { return m_y1; }
76    double x2() const { return m_x2; }
77    double y2() const { return m_y2; }
78
79private:
80    CSSCubicBezierTimingFunctionValue(double x1, double y1, double x2, double y2)
81        : m_x1(x1)
82        , m_y1(y1)
83        , m_x2(x2)
84        , m_y2(y2)
85    {
86    }
87
88    virtual String cssText() const;
89
90    virtual bool isCubicBezierTimingFunctionValue() const { return true; }
91
92    double m_x1;
93    double m_y1;
94    double m_x2;
95    double m_y2;
96};
97
98class CSSStepsTimingFunctionValue : public CSSTimingFunctionValue {
99public:
100    static PassRefPtr<CSSStepsTimingFunctionValue> create(int steps, bool stepAtStart)
101    {
102        return adoptRef(new CSSStepsTimingFunctionValue(steps, stepAtStart));
103    }
104
105    int numberOfSteps() const { return m_steps; }
106    bool stepAtStart() const { return m_stepAtStart; }
107
108private:
109    CSSStepsTimingFunctionValue(int steps, bool stepAtStart)
110        : m_steps(steps)
111        , m_stepAtStart(stepAtStart)
112    {
113    }
114
115    virtual String cssText() const;
116
117    virtual bool isStepsTimingFunctionValue() const { return true; }
118
119    int m_steps;
120    bool m_stepAtStart;
121};
122
123} // namespace
124
125#endif
126