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/v8/ExceptionMessages.h"
35#include "bindings/v8/ExceptionStatePlaceholder.h"
36#include "core/svg/properties/SVGProperty.h"
37
38namespace WebCore {
39
40class SVGNumberTearOff;
41
42class SVGNumber : public SVGPropertyBase {
43public:
44    // SVGNumber has a tear-off type, but SVGAnimatedNumber uses primitive type.
45    typedef SVGNumberTearOff TearOffType;
46    typedef float PrimitiveType;
47
48    static PassRefPtr<SVGNumber> create(float value = 0.0f)
49    {
50        return adoptRef(new SVGNumber(value));
51    }
52
53    virtual PassRefPtr<SVGNumber> clone() const;
54    virtual PassRefPtr<SVGPropertyBase> cloneForAnimation(const String&) const OVERRIDE;
55
56    float value() const { return m_value; }
57    void setValue(float value) { m_value = value; }
58
59    virtual String valueAsString() const OVERRIDE;
60    virtual void setValueAsString(const String&, ExceptionState&);
61
62    virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) OVERRIDE;
63    virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) OVERRIDE;
64    virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement* contextElement) OVERRIDE;
65
66    static AnimatedPropertyType classType() { return AnimatedNumber; }
67
68protected:
69    explicit SVGNumber(float);
70
71    template<typename CharType>
72    bool parse(const CharType*& ptr, const CharType* end);
73
74    float m_value;
75};
76
77inline PassRefPtr<SVGNumber> toSVGNumber(PassRefPtr<SVGPropertyBase> passBase)
78{
79    RefPtr<SVGPropertyBase> base = passBase;
80    ASSERT(base->type() == SVGNumber::classType());
81    return static_pointer_cast<SVGNumber>(base.release());
82}
83
84// SVGNumber which also accepts percentage as its value.
85// This is used for <stop> "offset"
86// Spec: http://www.w3.org/TR/SVG11/pservers.html#GradientStops
87//   offset = "<number> | <percentage>"
88class SVGNumberAcceptPercentage FINAL : public SVGNumber {
89public:
90    static PassRefPtr<SVGNumberAcceptPercentage> create(float value = 0)
91    {
92        return adoptRef(new SVGNumberAcceptPercentage(value));
93    }
94
95    virtual PassRefPtr<SVGNumber> clone() const OVERRIDE;
96    virtual void setValueAsString(const String&, ExceptionState&) OVERRIDE;
97
98private:
99    SVGNumberAcceptPercentage(float value);
100};
101
102} // namespace WebCore
103
104#endif // SVGNumber_h
105