1/*
2 * Copyright (C) 2014 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef SVGNumber_h
32#define SVGNumber_h
33
34#include "bindings/core/v8/ExceptionMessages.h"
35#include "core/svg/properties/SVGPropertyHelper.h"
36
37namespace blink {
38
39class SVGNumberTearOff;
40
41class SVGNumber : public SVGPropertyHelper<SVGNumber> {
42public:
43    // SVGNumber has a tear-off type, but SVGAnimatedNumber uses primitive type.
44    typedef SVGNumberTearOff TearOffType;
45    typedef float PrimitiveType;
46
47    static PassRefPtr<SVGNumber> create(float value = 0.0f)
48    {
49        return adoptRef(new SVGNumber(value));
50    }
51
52    virtual PassRefPtr<SVGNumber> clone() const;
53
54    float value() const { return m_value; }
55    void setValue(float value) { m_value = value; }
56
57    virtual String valueAsString() const OVERRIDE;
58    virtual void setValueAsString(const String&, ExceptionState&);
59
60    virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) OVERRIDE;
61    virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) OVERRIDE;
62    virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement* contextElement) OVERRIDE;
63
64    static AnimatedPropertyType classType() { return AnimatedNumber; }
65
66protected:
67    explicit SVGNumber(float);
68
69    template<typename CharType>
70    bool parse(const CharType*& ptr, const CharType* end);
71
72    float m_value;
73};
74
75inline PassRefPtr<SVGNumber> toSVGNumber(PassRefPtr<SVGPropertyBase> passBase)
76{
77    RefPtr<SVGPropertyBase> base = passBase;
78    ASSERT(base->type() == SVGNumber::classType());
79    return static_pointer_cast<SVGNumber>(base.release());
80}
81
82// SVGNumber which also accepts percentage as its value.
83// This is used for <stop> "offset"
84// Spec: http://www.w3.org/TR/SVG11/pservers.html#GradientStops
85//   offset = "<number> | <percentage>"
86class SVGNumberAcceptPercentage FINAL : public SVGNumber {
87public:
88    static PassRefPtr<SVGNumberAcceptPercentage> create(float value = 0)
89    {
90        return adoptRef(new SVGNumberAcceptPercentage(value));
91    }
92
93    virtual PassRefPtr<SVGNumber> clone() const OVERRIDE;
94    virtual void setValueAsString(const String&, ExceptionState&) OVERRIDE;
95
96private:
97    SVGNumberAcceptPercentage(float value);
98};
99
100} // namespace blink
101
102#endif // SVGNumber_h
103