--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/SVGAnimateTransformElement.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,231 @@
+/*
+ Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
+ 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
+ Copyright (C) 2007 Eric Seidel <eric@webkit.org>
+ Copyright (C) 2008 Apple Inc. All Rights Reserved.
+
+ This file is part of the WebKit project
+
+ 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"
+
+#if ENABLE(SVG) && ENABLE(SVG_ANIMATION)
+#include "SVGAnimateTransformElement.h"
+
+#include "AffineTransform.h"
+#include "Attribute.h"
+#include "RenderObject.h"
+#include "RenderSVGResource.h"
+#include "SVGAngle.h"
+#include "SVGElementInstance.h"
+#include "SVGGradientElement.h"
+#include "SVGParserUtilities.h"
+#include "SVGSVGElement.h"
+#include "SVGStyledTransformableElement.h"
+#include "SVGTextElement.h"
+#include "SVGTransform.h"
+#include "SVGTransformList.h"
+#include "SVGUseElement.h"
+#include <math.h>
+#include <wtf/MathExtras.h>
+
+using namespace std;
+
+namespace WebCore {
+
+SVGAnimateTransformElement::SVGAnimateTransformElement(const QualifiedName& tagName, Document* doc)
+ : SVGAnimationElement(tagName, doc)
+ , m_type(SVGTransform::SVG_TRANSFORM_UNKNOWN)
+ , m_baseIndexInTransformList(0)
+{
+}
+
+SVGAnimateTransformElement::~SVGAnimateTransformElement()
+{
+}
+
+bool SVGAnimateTransformElement::hasValidTarget() const
+{
+ SVGElement* targetElement = this->targetElement();
+ return SVGAnimationElement::hasValidTarget()
+ && (targetElement->isStyledTransformable()
+ || targetElement->hasTagName(SVGNames::textTag)
+ || targetElement->hasTagName(SVGNames::linearGradientTag)
+ || targetElement->hasTagName(SVGNames::radialGradientTag));
+}
+
+void SVGAnimateTransformElement::parseMappedAttribute(Attribute* attr)
+{
+ if (attr->name() == SVGNames::typeAttr) {
+ if (attr->value() == "translate")
+ m_type = SVGTransform::SVG_TRANSFORM_TRANSLATE;
+ else if (attr->value() == "scale")
+ m_type = SVGTransform::SVG_TRANSFORM_SCALE;
+ else if (attr->value() == "rotate")
+ m_type = SVGTransform::SVG_TRANSFORM_ROTATE;
+ else if (attr->value() == "skewX")
+ m_type = SVGTransform::SVG_TRANSFORM_SKEWX;
+ else if (attr->value() == "skewY")
+ m_type = SVGTransform::SVG_TRANSFORM_SKEWY;
+ } else
+ SVGAnimationElement::parseMappedAttribute(attr);
+}
+
+
+static PassRefPtr<SVGTransformList> transformListFor(SVGElement* element)
+{
+ ASSERT(element);
+ if (element->isStyledTransformable())
+ return static_cast<SVGStyledTransformableElement*>(element)->transform();
+ if (element->hasTagName(SVGNames::textTag))
+ return static_cast<SVGTextElement*>(element)->transform();
+ if (element->hasTagName(SVGNames::linearGradientTag) || element->hasTagName(SVGNames::radialGradientTag))
+ return static_cast<SVGGradientElement*>(element)->gradientTransform();
+ return 0;
+}
+
+void SVGAnimateTransformElement::resetToBaseValue(const String& baseValue)
+{
+ if (!hasValidTarget())
+ return;
+
+ if (targetElement()->hasTagName(SVGNames::linearGradientTag) || targetElement()->hasTagName(SVGNames::radialGradientTag)) {
+ targetElement()->setAttribute(SVGNames::gradientTransformAttr, baseValue.isEmpty() ? "matrix(1 0 0 1 0 0)" : baseValue);
+ return;
+ }
+
+ if (baseValue.isEmpty()) {
+ ExceptionCode ec;
+ RefPtr<SVGTransformList> list = transformListFor(targetElement());
+ list->clear(ec);
+ } else
+ targetElement()->setAttribute(SVGNames::transformAttr, baseValue);
+}
+
+void SVGAnimateTransformElement::calculateAnimatedValue(float percentage, unsigned repeat, SVGSMILElement* resultElement)
+{
+ if (!hasValidTarget())
+ return;
+ SVGElement* targetElement = resultElement->targetElement();
+ RefPtr<SVGTransformList> transformList = transformListFor(targetElement);
+ ASSERT(transformList);
+
+ ExceptionCode ec;
+ if (!isAdditive())
+ transformList->clear(ec);
+ if (isAccumulated() && repeat) {
+ SVGTransform accumulatedTransform = SVGTransformDistance(m_fromTransform, m_toTransform).scaledDistance(repeat).addToSVGTransform(SVGTransform());
+ transformList->appendItem(accumulatedTransform, ec);
+ }
+ SVGTransform transform = SVGTransformDistance(m_fromTransform, m_toTransform).scaledDistance(percentage).addToSVGTransform(m_fromTransform);
+ transformList->appendItem(transform, ec);
+}
+
+bool SVGAnimateTransformElement::calculateFromAndToValues(const String& fromString, const String& toString)
+{
+ m_fromTransform = parseTransformValue(fromString);
+ if (!m_fromTransform.isValid())
+ return false;
+ m_toTransform = parseTransformValue(toString);
+ return m_toTransform.isValid();
+}
+
+bool SVGAnimateTransformElement::calculateFromAndByValues(const String& fromString, const String& byString)
+{
+
+ m_fromTransform = parseTransformValue(fromString);
+ if (!m_fromTransform.isValid())
+ return false;
+ m_toTransform = SVGTransformDistance::addSVGTransforms(m_fromTransform, parseTransformValue(byString));
+ return m_toTransform.isValid();
+}
+
+SVGTransform SVGAnimateTransformElement::parseTransformValue(const String& value) const
+{
+ if (value.isEmpty())
+ return SVGTransform(m_type);
+ SVGTransform result;
+ // FIXME: This is pretty dumb but parseTransformValue() wants those parenthesis.
+ String parseString("(" + value + ")");
+ const UChar* ptr = parseString.characters();
+ SVGTransformable::parseTransformValue(m_type, ptr, ptr + parseString.length(), result); // ignoring return value
+ return result;
+}
+
+void SVGAnimateTransformElement::applyResultsToTarget()
+{
+ if (!hasValidTarget())
+ return;
+ // We accumulate to the target element transform list so there is not much to do here.
+ SVGElement* targetElement = this->targetElement();
+ if (!targetElement)
+ return;
+
+ if (RenderObject* renderer = targetElement->renderer()) {
+ renderer->setNeedsTransformUpdate();
+ RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
+ }
+
+ // ...except in case where we have additional instances in <use> trees.
+ const HashSet<SVGElementInstance*>& instances = targetElement->instancesForElement();
+ RefPtr<SVGTransformList> transformList = transformListFor(targetElement);
+ const HashSet<SVGElementInstance*>::const_iterator end = instances.end();
+ for (HashSet<SVGElementInstance*>::const_iterator it = instances.begin(); it != end; ++it) {
+ SVGElement* shadowTreeElement = (*it)->shadowTreeElement();
+ ASSERT(shadowTreeElement);
+ if (shadowTreeElement->isStyledTransformable())
+ static_cast<SVGStyledTransformableElement*>(shadowTreeElement)->setTransformBaseValue(transformList.get());
+ else if (shadowTreeElement->hasTagName(SVGNames::textTag))
+ static_cast<SVGTextElement*>(shadowTreeElement)->setTransformBaseValue(transformList.get());
+ else if (shadowTreeElement->hasTagName(SVGNames::linearGradientTag) || shadowTreeElement->hasTagName(SVGNames::radialGradientTag))
+ static_cast<SVGGradientElement*>(shadowTreeElement)->setGradientTransformBaseValue(transformList.get());
+ if (RenderObject* renderer = shadowTreeElement->renderer()) {
+ renderer->setNeedsTransformUpdate();
+ RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
+ }
+ }
+}
+
+float SVGAnimateTransformElement::calculateDistance(const String& fromString, const String& toString)
+{
+ // FIXME: This is not correct in all cases. The spec demands that each component (translate x and y for example)
+ // is paced separately. To implement this we need to treat each component as individual animation everywhere.
+ SVGTransform from = parseTransformValue(fromString);
+ if (!from.isValid())
+ return -1.f;
+ SVGTransform to = parseTransformValue(toString);
+ if (!to.isValid() || from.type() != to.type())
+ return -1.f;
+ if (to.type() == SVGTransform::SVG_TRANSFORM_TRANSLATE) {
+ FloatSize diff = to.translate() - from.translate();
+ return sqrtf(diff.width() * diff.width() + diff.height() * diff.height());
+ }
+ if (to.type() == SVGTransform::SVG_TRANSFORM_ROTATE)
+ return fabsf(to.angle() - from.angle());
+ if (to.type() == SVGTransform::SVG_TRANSFORM_SCALE) {
+ FloatSize diff = to.scale() - from.scale();
+ return sqrtf(diff.width() * diff.width() + diff.height() * diff.height());
+ }
+ return -1.f;
+}
+
+}
+
+// vim:ts=4:noet
+#endif // ENABLE(SVG)
+