third_party/WebKit/Source/core/svg/SVGNumber.cpp

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