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/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
*
* 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.
*
* 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.
*
* 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.
*/
#include "config.h"
#include "core/svg/SVGPointList.h"
#include "core/svg/SVGAnimationElement.h"
#include "core/svg/SVGParserUtilities.h"
#include "platform/geometry/FloatPoint.h"
#include "wtf/text/StringBuilder.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
inline PassRefPtr<SVGPointList> toSVGPointList(PassRefPtr<SVGPropertyBase> passBase)
{
RefPtr<SVGPropertyBase> base = passBase;
ASSERT(base->type() == SVGPointList::classType());
return static_pointer_cast<SVGPointList>(base.release());
}
SVGPointList::SVGPointList()
{
}
SVGPointList::~SVGPointList()
{
}
PassRefPtr<SVGPointList> SVGPointList::clone()
{
RefPtr<SVGPointList> svgPointList = SVGPointList::create();
svgPointList->deepCopy(this);
return svgPointList.release();
}
PassRefPtr<SVGPropertyBase> SVGPointList::cloneForAnimation(const String& value) const
{
RefPtr<SVGPointList> svgPointList = SVGPointList::create();
svgPointList->setValueAsString(value, IGNORE_EXCEPTION);
return svgPointList.release();
}
String SVGPointList::valueAsString() const
{
StringBuilder builder;
ConstIterator it = begin();
ConstIterator itEnd = end();
if (it != itEnd) {
builder.append(it->valueAsString());
++it;
for (; it != itEnd; ++it) {
builder.append(' ');
builder.append(it->valueAsString());
}
}
return builder.toString();
}
template <typename CharType>
bool SVGPointList::parse(const CharType*& ptr, const CharType* end)
{
clear();
skipOptionalSVGSpaces(ptr, end);
if (ptr >= end)
return true;
for (;;) {
float x = 0.0f;
float y = 0.0f;
bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y, DisallowWhitespace);
if (!valid) {
return false;
}
append(SVGPoint::create(FloatPoint(x, y)));
skipOptionalSVGSpaces(ptr, end);
if (ptr < end && *ptr == ',') {
++ptr;
skipOptionalSVGSpaces(ptr, end);
// ',' requires the list to be continued
continue;
}
// check end of list
if (ptr >= end)
return true;
}
}
void SVGPointList::setValueAsString(const String& value, ExceptionState& exceptionState)
{
if (value.isEmpty()) {
clear();
return;
}
bool valid = false;
if (value.is8Bit()) {
const LChar* ptr = value.characters8();
const LChar* end = ptr + value.length();
valid = parse(ptr, end);
} else {
const UChar* ptr = value.characters16();
const UChar* end = ptr + value.length();
valid = parse(ptr, end);
}
if (!valid)
exceptionState.throwDOMException(SyntaxError, "Problem parsing points=\""+value+"\"");
}
void SVGPointList::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement* contextElement)
{
RefPtr<SVGPointList> otherList = toSVGPointList(other);
if (length() != otherList->length())
return;
for (size_t i = 0; i < length(); ++i)
at(i)->setValue(at(i)->value() + otherList->at(i)->value());
}
bool SVGPointList::adjustFromToListValues(PassRefPtr<SVGPointList> passFromList, PassRefPtr<SVGPointList> passToList, float percentage, bool isToAnimation, bool resizeAnimatedListIfNeeded)
{
RefPtr<SVGPointList> fromList = passFromList;
RefPtr<SVGPointList> toList = passToList;
// If no 'to' value is given, nothing to animate.
size_t toListSize = toList->length();
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->length();
if (fromListSize != toListSize && fromListSize) {
if (percentage < 0.5) {
if (!isToAnimation)
deepCopy(fromList);
} else {
deepCopy(toList);
}
return false;
}
ASSERT(!fromListSize || fromListSize == toListSize);
if (resizeAnimatedListIfNeeded && length() < toListSize) {
size_t paddingCount = toListSize - length();
for (size_t i = 0; i < paddingCount; ++i)
append(SVGPoint::create());
}
return true;
}
void SVGPointList::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> fromValue, PassRefPtr<SVGPropertyBase> toValue, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement)
{
RefPtr<SVGPointList> fromList = toSVGPointList(fromValue);
RefPtr<SVGPointList> toList = toSVGPointList(toValue);
RefPtr<SVGPointList> toAtEndOfDurationList = toSVGPointList(toAtEndOfDurationValue);
size_t fromPointListSize = fromList->length();
size_t toPointListSize = toList->length();
size_t toAtEndOfDurationListSize = toAtEndOfDurationList->length();
if (!adjustFromToListValues(fromList, toList, percentage, animationElement->animationMode() == ToAnimation, true))
return;
for (size_t i = 0; i < toPointListSize; ++i) {
float animatedX = at(i)->x();
float animatedY = at(i)->y();
FloatPoint effectiveFrom;
if (fromPointListSize)
effectiveFrom = fromList->at(i)->value();
FloatPoint effectiveTo = toList->at(i)->value();
FloatPoint effectiveToAtEnd;
if (i < toAtEndOfDurationListSize)
effectiveToAtEnd = toAtEndOfDurationList->at(i)->value();
animationElement->animateAdditiveNumber(percentage, repeatCount, effectiveFrom.x(), effectiveTo.x(), effectiveToAtEnd.x(), animatedX);
animationElement->animateAdditiveNumber(percentage, repeatCount, effectiveFrom.y(), effectiveTo.y(), effectiveToAtEnd.y(), animatedY);
at(i)->setValue(FloatPoint(animatedX, animatedY));
}
}
float SVGPointList::calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement*)
{
// FIXME: Distance calculation is not possible for SVGPointList right now. We need the distance for every single value.
return -1;
}
}
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