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#include "config.h"
32
33#include "core/svg/SVGPoint.h"
34
35#include "bindings/v8/ExceptionState.h"
36#include "core/dom/ExceptionCode.h"
37#include "core/svg/SVGAnimationElement.h"
38#include "core/svg/SVGParserUtilities.h"
39#include "platform/transforms/AffineTransform.h"
40#include "wtf/text/StringBuilder.h"
41#include "wtf/text/WTFString.h"
42
43namespace WebCore {
44
45SVGPoint::SVGPoint()
46    : SVGPropertyBase(classType())
47{
48}
49
50SVGPoint::SVGPoint(const FloatPoint& point)
51    : SVGPropertyBase(classType())
52    , m_value(point)
53{
54}
55
56PassRefPtr<SVGPoint> SVGPoint::clone() const
57{
58    return SVGPoint::create(m_value);
59}
60
61PassRefPtr<SVGPropertyBase> SVGPoint::cloneForAnimation(const String& value) const
62{
63    RefPtr<SVGPoint> point = SVGPoint::create();
64    point->setValueAsString(value, IGNORE_EXCEPTION);
65    return point.release();
66}
67
68template<typename CharType>
69void SVGPoint::parse(const CharType*& ptr, const CharType* end, ExceptionState& exceptionState)
70{
71    const CharType* start = ptr;
72
73    skipOptionalSVGSpaces(ptr, end);
74
75    float x = 0.0f;
76    float y = 0.0f;
77    bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y, DisallowWhitespace);
78
79    if (!valid) {
80        exceptionState.throwDOMException(SyntaxError, "Problem parsing point \"" + String(start, end - start) + "\"");
81        return;
82    }
83
84    skipOptionalSVGSpaces(ptr, end);
85    if (ptr < end) { // nothing should come after the last, fourth number
86        exceptionState.throwDOMException(SyntaxError, "Problem parsing point \"" + String(start, end - start) + "\"");
87        return;
88    }
89
90    m_value = FloatPoint(x, y);
91}
92
93FloatPoint SVGPoint::matrixTransform(const AffineTransform& transform) const
94{
95    double newX, newY;
96    transform.map(static_cast<double>(x()), static_cast<double>(y()), newX, newY);
97    return FloatPoint::narrowPrecision(newX, newY);
98}
99
100void SVGPoint::setValueAsString(const String& string, ExceptionState& exceptionState)
101{
102    if (string.isEmpty()) {
103        m_value = FloatPoint(0.0f, 0.0f);
104        return;
105    }
106
107    if (string.is8Bit()) {
108        const LChar* ptr = string.characters8();
109        const LChar* end = ptr + string.length();
110        parse(ptr, end, exceptionState);
111        return;
112    }
113
114    const UChar* ptr = string.characters16();
115    const UChar* end = ptr + string.length();
116    parse(ptr, end, exceptionState);
117}
118
119String SVGPoint::valueAsString() const
120{
121    StringBuilder builder;
122    builder.append(String::number(x()));
123    builder.append(' ');
124    builder.append(String::number(y()));
125    return builder.toString();
126}
127
128void SVGPoint::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement*)
129{
130    // SVGPoint is not animated by itself
131    ASSERT_NOT_REACHED();
132}
133
134void SVGPoint::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> fromValue, PassRefPtr<SVGPropertyBase> toValue, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*)
135{
136    // SVGPoint is not animated by itself
137    ASSERT_NOT_REACHED();
138}
139
140float SVGPoint::calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement* contextElement)
141{
142    // SVGPoint is not animated by itself
143    ASSERT_NOT_REACHED();
144    return 0.0f;
145}
146
147}
148