[SVG] SVGLength{,List} migration to new SVG property impl.

Source/core/svg/SVGLengthList.cpp

 /*
- * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
- * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
+ * Copyright (C) 2013 Google Inc. All rights reserved.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
  *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
  *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/svg/SVGLengthList.h"
 
-#include "bindings/v8/ExceptionState.h"
+#include "bindings/v8/ExceptionStatePlaceholder.h"
+#include "core/svg/SVGAnimationElement.h"
 #include "core/svg/SVGParserUtilities.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
-template<typename CharType>
-void SVGLengthList::parseInternal(const CharType*& ptr, const CharType* end, SVGLengthMode mode)
+inline SVGLengthList* toSVGLengthList(NewSVGPropertyBase* base)
 {
-    TrackExceptionState exceptionState;
+    // FIXME: add type checking
+    return static_cast<SVGLengthList*>(base);
+}
 
+SVGLengthList::SVGLengthList(SVGLengthMode mode)
+:   m_mode(mode)
+{
+}
+
+SVGLengthList::~SVGLengthList()
+{
+}
+
+PassRefPtr<SVGLengthList> SVGLengthList::clone() const
+{
+    RefPtr<SVGLengthList> ret = SVGLengthList::create(m_mode);
+    ret->deepCopy(*this);
+    return ret.release();
+}
+
+PassRefPtr<NewSVGPropertyBase> SVGLengthList::cloneForAnimation(const String& value) const
+{
+    RefPtr<SVGLengthList> ret = SVGLengthList::create(m_mode);
+    ret->setValueAsString(value, IGNORE_EXCEPTION);
+    return ret.release();
+}
+
+String SVGLengthList::valueAsString() const
+{
+    StringBuilder builder;
+
+    unsigned size = m_values.size();

[pdr., 2014/01/07 06:42:53]

Using an iterator here will be faster due to bounds checking.

[kouhei (in TOK), 2014/01/08 08:12:07]

Done.

+    for (unsigned i = 0; i < size; ++i) {
+        if (i > 0)
+            builder.append(' ');
+
+        builder.append(m_values[i]->valueAsString());
+    }
+
+    return builder.toString();
+}
+
+template <typename CharType>
+void SVGLengthList::parseInternal(const CharType*& ptr, const CharType* end, ExceptionState& exceptionState)
+{
+    m_values.clear();
     while (ptr < end) {
         const CharType* start = ptr;
         while (ptr < end && *ptr != ',' && !isSVGSpace(*ptr))
             ptr++;
         if (ptr == start)
             break;
 
-        SVGLength length(mode);
+        RefPtr<SVGLength> length = SVGLength::create(m_mode);
         String valueString(start, ptr - start);
         if (valueString.isEmpty())
             return;
-        length.setValueAsString(valueString, exceptionState);
+        length->setValueAsString(valueString, exceptionState);
         if (exceptionState.hadException())
             return;
-        append(length);
+        m_values.append(length);
         skipOptionalSVGSpacesOrDelimiter(ptr, end);
     }
 }
 
-void SVGLengthList::parse(const String& value, SVGLengthMode mode)
+void SVGLengthList::setValueAsString(const String& value, ExceptionState& exceptionState)
 {
-    clear();
     if (value.isEmpty())
         return;
     if (value.is8Bit()) {
         const LChar* ptr = value.characters8();
         const LChar* end = ptr + value.length();
-        parseInternal(ptr, end, mode);
+        parseInternal(ptr, end, exceptionState);
     } else {
         const UChar* ptr = value.characters16();
         const UChar* end = ptr + value.length();
-        parseInternal(ptr, end, mode);
+        parseInternal(ptr, end, exceptionState);
     }
 }
 
-String SVGLengthList::valueAsString() const
+void SVGLengthList::add(PassRefPtr<NewSVGPropertyBase> other, SVGElement* contextElement)
 {
-    StringBuilder builder;
+    SVGLengthList* otherList = toSVGLengthList(other.get());
 
-    unsigned size = this->size();
-    for (unsigned i = 0; i < size; ++i) {
-        if (i > 0)
-            builder.append(' ');
+    if (m_values.size() != otherList->m_values.size())
+        return;
 
-        builder.append(at(i).valueAsString());
+    SVGLengthContext lengthContext(contextElement);
+    for (size_t i = 0; i < m_values.size(); ++i)
+        m_values[i]->setValue(m_values[i]->value(lengthContext) + otherList->m_values[i]->value(lengthContext), lengthContext, ASSERT_NO_EXCEPTION);
+}
+
+bool SVGLengthList::adjustFromToListValues(const SVGLengthList* fromList, const SVGLengthList* toList, float percentage, bool isToAnimation, bool resizeAnimatedListIfNeeded)
+{
+    // If no 'to' value is given, nothing to animate.
+    size_t toListSize = toList->m_values.size();
+    if (!toListSize)
+        return false;
+
+    // If the 'from' value is given and it's length doesn't match the 'to' value list length, fallback to a discrete animation.
+    size_t fromListSize = fromList->m_values.size();
+    if (fromListSize != toListSize && fromListSize) {
+        if (percentage < 0.5) {
+            if (!isToAnimation)
+                deepCopy(*fromList);
+        } else {
+            deepCopy(*toList);
+        }
+
+        return false;
     }
 
-    return builder.toString();
+    ASSERT(!fromListSize || fromListSize == toListSize);
+    if (resizeAnimatedListIfNeeded && m_values.size() < toListSize) {
+        size_t paddingCount = toListSize - m_values.size();
+        for (size_t i = 0; i < paddingCount; ++i)
+            m_values.append(SVGLength::create(m_mode));
+    }
+
+    return true;
 }
 
+void SVGLengthList::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<NewSVGPropertyBase> fromValue, PassRefPtr<NewSVGPropertyBase> toValue, PassRefPtr<NewSVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement)
+{
+    SVGLengthContext lengthContext(contextElement);
+    ASSERT(m_mode == SVGLength::lengthModeForAnimatedLengthAttribute(animationElement->attributeName()));
+    const SVGLengthList* fromList = toSVGLengthList(fromValue.get());
+    const SVGLengthList* toList = toSVGLengthList(toValue.get());
+    const SVGLengthList* toAtEndOfDurationList = toSVGLengthList(toAtEndOfDurationValue.get());
+
+    size_t fromLengthListSize = fromList->m_values.size();
+    size_t toLengthListSize = toList->m_values.size();
+    size_t toAtEndOfDurationListSize = toAtEndOfDurationList->m_values.size();
+
+    if (!adjustFromToListValues(fromList, toList, percentage, animationElement->animationMode() == ToAnimation, true))
+        return;
+
+    for (size_t i = 0; i < toLengthListSize; ++i) {
+        float animatedNumber = m_values[i]->value(lengthContext);
+        SVGLengthType unitType = toList->m_values[i]->unitType();
+        float effectiveFrom = 0;
+        if (fromLengthListSize) {
+            if (percentage < 0.5)
+                unitType = fromList->m_values[i]->unitType();
+            effectiveFrom = fromList->m_values[i]->value(lengthContext);
+        }
+        float effectiveTo = toList->m_values[i]->value(lengthContext);
+        float effectiveToAtEnd = i < toAtEndOfDurationListSize ? toAtEndOfDurationList->m_values[i]->value(lengthContext) : 0;
+
+        animationElement->animateAdditiveNumber(percentage, repeatCount, effectiveFrom, effectiveTo, effectiveToAtEnd, animatedNumber);
+        m_values[i]->setUnitType(unitType);
+        m_values[i]->setValue(animatedNumber, lengthContext, ASSERT_NO_EXCEPTION);
+    }
 }
+
+float SVGLengthList::calculateDistance(PassRefPtr<NewSVGPropertyBase> to, SVGElement*)
+{
+    // FIXME: Distance calculation is not possible for SVGLengthList right now. We need the distance for every single value.
+    return -1;
+}
+}