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      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 #include "core/svg/SVGNumber.h"
     33 
     34 #include "core/svg/SVGAnimationElement.h"
     35 #include "core/svg/SVGParserUtilities.h"
     36 
     37 namespace WebCore {
     38 
     39 SVGNumber::SVGNumber(float value)
     40     : SVGPropertyBase(classType())
     41     , m_value(value)
     42 {
     43 }
     44 
     45 PassRefPtr<SVGNumber> SVGNumber::clone() const
     46 {
     47     return create(m_value);
     48 }
     49 
     50 PassRefPtr<SVGPropertyBase> SVGNumber::cloneForAnimation(const String& value) const
     51 {
     52     RefPtr<SVGNumber> svgNumber = create();
     53     svgNumber->setValueAsString(value, IGNORE_EXCEPTION);
     54     return svgNumber.release();
     55 }
     56 
     57 String SVGNumber::valueAsString() const
     58 {
     59     return String::number(m_value);
     60 }
     61 
     62 template<typename CharType>
     63 bool SVGNumber::parse(const CharType*& ptr, const CharType* end)
     64 {
     65     if (!parseNumber(ptr, end, m_value, AllowLeadingAndTrailingWhitespace)) {
     66         m_value = 0;
     67         return false;
     68     }
     69 
     70     if (ptr != end) {
     71         m_value = 0;
     72         return false;
     73     }
     74 
     75     return true;
     76 }
     77 
     78 void SVGNumber::setValueAsString(const String& string, ExceptionState& exceptionState)
     79 {
     80     if (string.isEmpty()) {
     81         m_value = 0;
     82         return;
     83     }
     84 
     85     bool valid = false;
     86     if (string.is8Bit()) {
     87         const LChar* ptr = string.characters8();
     88         const LChar* end = ptr + string.length();
     89         valid = parse(ptr, end);
     90     } else {
     91         const UChar* ptr = string.characters16();
     92         const UChar* end = ptr + string.length();
     93         valid = parse(ptr, end);
     94     }
     95 
     96     if (!valid) {
     97         exceptionState.throwDOMException(SyntaxError, "The value provided ('" + string + "') is invalid.");
     98         m_value = 0;
     99     }
    100 }
    101 
    102 void SVGNumber::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement*)
    103 {
    104     setValue(m_value + toSVGNumber(other)->value());
    105 }
    106 
    107 void SVGNumber::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> from, PassRefPtr<SVGPropertyBase> to, PassRefPtr<SVGPropertyBase> toAtEndOfDuration, SVGElement*)
    108 {
    109     ASSERT(animationElement);
    110 
    111     RefPtr<SVGNumber> fromNumber = toSVGNumber(from);
    112     RefPtr<SVGNumber> toNumber = toSVGNumber(to);
    113     RefPtr<SVGNumber> toAtEndOfDurationNumber = toSVGNumber(toAtEndOfDuration);
    114 
    115     animationElement->animateAdditiveNumber(percentage, repeatCount, fromNumber->value(), toNumber->value(), toAtEndOfDurationNumber->value(), m_value);
    116 }
    117 
    118 float SVGNumber::calculateDistance(PassRefPtr<SVGPropertyBase> other, SVGElement*)
    119 {
    120     return fabsf(m_value - toSVGNumber(other)->value());
    121 }
    122 
    123 PassRefPtr<SVGNumber> SVGNumberAcceptPercentage::clone() const
    124 {
    125     return create(m_value);
    126 }
    127 
    128 void SVGNumberAcceptPercentage::setValueAsString(const String& string, ExceptionState& exceptionState)
    129 {
    130     bool valid = parseNumberOrPercentage(string, m_value);
    131 
    132     if (!valid) {
    133         exceptionState.throwDOMException(SyntaxError, "The value provided ('" + string + "') is invalid.");
    134         m_value = 0;
    135     }
    136 }
    137 
    138 SVGNumberAcceptPercentage::SVGNumberAcceptPercentage(float value)
    139     : SVGNumber(value)
    140 {
    141 }
    142 
    143 }
    144