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();
}
bool SVGTransformable::parseTransformAttribute(SVGTransformList* list, const UChar*& currTransform, const UChar* end)
{
bool delimParsed = false;
while (currTransform < end) {
delimParsed = false;
unsigned short type = SVGTransform::SVG_TRANSFORM_UNKNOWN;
skipOptionalSpaces(currTransform, end);
if (!parseAndSkipType(currTransform, end, type))
return false;
SVGTransform t;
if (!parseTransformValue(type, currTransform, end, t))
return false;
ExceptionCode ec = 0;
list->appendItem(t, ec);
skipOptionalSpaces(currTransform, end);
if (currTransform < end && *currTransform == ',') {
delimParsed = true;
currTransform++;
}
skipOptionalSpaces(currTransform, end);
}
return !delimParsed;
}
bool SVGTransformable::parseTransformAttribute(SVGTransformList& list, const UChar*& currTransform, const UChar* end, TransformParsingMode mode)
{
if (mode == ClearList)
list.clear();
bool delimParsed = false;
while (currTransform < end) {
delimParsed = false;
SVGTransform::SVGTransformType type = SVGTransform::SVG_TRANSFORM_UNKNOWN;
skipOptionalSVGSpaces(currTransform, end);
if (!parseAndSkipType(currTransform, end, type))
return false;
SVGTransform transform;
if (!parseTransformValue(type, currTransform, end, transform))
return false;
list.append(transform);
skipOptionalSVGSpaces(currTransform, end);
if (currTransform < end && *currTransform == ',') {
delimParsed = true;
++currTransform;
}
skipOptionalSVGSpaces(currTransform, end);
}
return !delimParsed;
}
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;
}
