bool SVGTransformable::parseTransformValue(SVGTransform::SVGTransformType type, const UChar*& ptr, const UChar* end, SVGTransform& transform)
{
if (type == SVGTransform::SVG_TRANSFORM_UNKNOWN)
return false;
int valueCount = 0;
float values[] = {0, 0, 0, 0, 0, 0};
if ((valueCount = parseTransformParamList(ptr, end, values, requiredValuesForType[type], optionalValuesForType[type])) < 0)
return false;
switch (type) {
case SVGTransform::SVG_TRANSFORM_UNKNOWN:
ASSERT_NOT_REACHED();
break;
case SVGTransform::SVG_TRANSFORM_SKEWX:
transform.setSkewX(values[0]);
break;
case SVGTransform::SVG_TRANSFORM_SKEWY:
transform.setSkewY(values[0]);
break;
case SVGTransform::SVG_TRANSFORM_SCALE:
if (valueCount == 1) // Spec: if only one param given, assume uniform scaling
transform.setScale(values[0], values[0]);
else
transform.setScale(values[0], values[1]);
break;
case SVGTransform::SVG_TRANSFORM_TRANSLATE:
if (valueCount == 1) // Spec: if only one param given, assume 2nd param to be 0
transform.setTranslate(values[0], 0);
else
transform.setTranslate(values[0], values[1]);
break;
case SVGTransform::SVG_TRANSFORM_ROTATE:
if (valueCount == 1)
transform.setRotate(values[0], 0, 0);
else
transform.setRotate(values[0], values[1], values[2]);
break;
case SVGTransform::SVG_TRANSFORM_MATRIX:
transform.setMatrix(AffineTransform(values[0], values[1], values[2], values[3], values[4], values[5]));
break;
}
return true;
}
SVGTransform* SVGTransformDistance::addSVGTransforms(SVGTransform* first,
SVGTransform* second,
unsigned repeatCount) {
ASSERT(first->transformType() == second->transformType());
SVGTransform* transform = SVGTransform::create();
switch (first->transformType()) {
case kSvgTransformMatrix:
ASSERT_NOT_REACHED();
case kSvgTransformUnknown:
return transform;
case kSvgTransformRotate: {
transform->setRotate(first->angle() + second->angle() * repeatCount,
first->rotationCenter().x() +
second->rotationCenter().x() * repeatCount,
first->rotationCenter().y() +
second->rotationCenter().y() * repeatCount);
return transform;
}
case kSvgTransformTranslate: {
float dx = first->translate().x() + second->translate().x() * repeatCount;
float dy = first->translate().y() + second->translate().y() * repeatCount;
transform->setTranslate(dx, dy);
return transform;
}
case kSvgTransformScale: {
FloatSize scale = second->scale();
scale.scale(repeatCount);
scale += first->scale();
transform->setScale(scale.width(), scale.height());
return transform;
}
case kSvgTransformSkewx:
transform->setSkewX(first->angle() + second->angle() * repeatCount);
return transform;
case kSvgTransformSkewy:
transform->setSkewY(first->angle() + second->angle() * repeatCount);
return transform;
}
ASSERT_NOT_REACHED();
return transform;
}
SVGTransform SVGTransformDistance::addSVGTransforms(const SVGTransform& first, const SVGTransform& second)
{
ASSERT(first.type() == second.type());
SVGTransform transform;
switch (first.type()) {
case SVGTransform::SVG_TRANSFORM_UNKNOWN:
return SVGTransform();
case SVGTransform::SVG_TRANSFORM_ROTATE:
{
transform.setRotate(first.angle() + second.angle(), first.rotationCenter().x() + second.rotationCenter().x(),
first.rotationCenter().y() + second.rotationCenter().y());
return transform;
}
case SVGTransform::SVG_TRANSFORM_MATRIX:
transform.setMatrix(first.matrix() * second.matrix());
return transform;
case SVGTransform::SVG_TRANSFORM_TRANSLATE:
{
float dx = first.translate().x() + second.translate().x();
float dy = first.translate().y() + second.translate().y();
transform.setTranslate(dx, dy);
return transform;
}
case SVGTransform::SVG_TRANSFORM_SCALE:
{
FloatSize scale = first.scale() + second.scale();
transform.setScale(scale.width(), scale.height());
return transform;
}
case SVGTransform::SVG_TRANSFORM_SKEWX:
transform.setSkewX(first.angle() + second.angle());
return transform;
case SVGTransform::SVG_TRANSFORM_SKEWY:
transform.setSkewY(first.angle() + second.angle());
return transform;
}
ASSERT_NOT_REACHED();
return SVGTransform();
}
SVGTransform* SVGTransformDistance::addToSVGTransform(
SVGTransform* transform) const {
DCHECK(m_transformType == transform->transformType() ||
m_transformType == kSvgTransformUnknown);
SVGTransform* newTransform = transform->clone();
switch (m_transformType) {
case kSvgTransformMatrix:
ASSERT_NOT_REACHED();
case kSvgTransformUnknown:
return SVGTransform::create();
case kSvgTransformTranslate: {
FloatPoint translation = transform->translate();
translation +=
FloatSize::narrowPrecision(m_transform.e(), m_transform.f());
newTransform->setTranslate(translation.x(), translation.y());
return newTransform;
}
case kSvgTransformScale: {
FloatSize scale = transform->scale();
scale += FloatSize::narrowPrecision(m_transform.a(), m_transform.d());
newTransform->setScale(scale.width(), scale.height());
return newTransform;
}
case kSvgTransformRotate: {
FloatPoint center = transform->rotationCenter();
newTransform->setRotate(transform->angle() + m_angle, center.x() + m_cx,
center.y() + m_cy);
return newTransform;
}
case kSvgTransformSkewx:
newTransform->setSkewX(transform->angle() + m_angle);
return newTransform;
case kSvgTransformSkewy:
newTransform->setSkewY(transform->angle() + m_angle);
return newTransform;
}
ASSERT_NOT_REACHED();
return newTransform;
}
bool SVGTransformable::parseTransformAttribute(SVGTransformList* list, const AtomicString& transform)
{
double x[] = {0, 0, 0, 0, 0, 0};
int nr = 0, required = 0, optional = 0;
const UChar* currTransform = transform.characters();
const UChar* end = currTransform + transform.length();
bool delimParsed = false;
while (currTransform < end) {
delimParsed = false;
unsigned short type = SVGTransform::SVG_TRANSFORM_UNKNOWN;
skipOptionalSpaces(currTransform, end);
if (currTransform >= end)
return false;
if (*currTransform == 's') {
if (skipString(currTransform, end, skewXDesc, sizeof(skewXDesc) / sizeof(UChar))) {
required = 1;
optional = 0;
type = SVGTransform::SVG_TRANSFORM_SKEWX;
} else if (skipString(currTransform, end, skewYDesc, sizeof(skewYDesc) / sizeof(UChar))) {
required = 1;
optional = 0;
type = SVGTransform::SVG_TRANSFORM_SKEWY;
} else if (skipString(currTransform, end, scaleDesc, sizeof(scaleDesc) / sizeof(UChar))) {
required = 1;
optional = 1;
type = SVGTransform::SVG_TRANSFORM_SCALE;
} else
return false;
} else if (skipString(currTransform, end, translateDesc, sizeof(translateDesc) / sizeof(UChar))) {
required = 1;
optional = 1;
type = SVGTransform::SVG_TRANSFORM_TRANSLATE;
} else if (skipString(currTransform, end, rotateDesc, sizeof(rotateDesc) / sizeof(UChar))) {
required = 1;
optional = 2;
type = SVGTransform::SVG_TRANSFORM_ROTATE;
} else if (skipString(currTransform, end, matrixDesc, sizeof(matrixDesc) / sizeof(UChar))) {
required = 6;
optional = 0;
type = SVGTransform::SVG_TRANSFORM_MATRIX;
} else
return false;
if ((nr = parseTransformParamList(currTransform, end, x, required, optional)) < 0)
return false;
SVGTransform t;
switch (type) {
case SVGTransform::SVG_TRANSFORM_SKEWX:
t.setSkewX(narrowPrecisionToFloat(x[0]));
break;
case SVGTransform::SVG_TRANSFORM_SKEWY:
t.setSkewY(narrowPrecisionToFloat(x[0]));
break;
case SVGTransform::SVG_TRANSFORM_SCALE:
if (nr == 1) // Spec: if only one param given, assume uniform scaling
t.setScale(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[0]));
else
t.setScale(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[1]));
break;
case SVGTransform::SVG_TRANSFORM_TRANSLATE:
if (nr == 1) // Spec: if only one param given, assume 2nd param to be 0
t.setTranslate(narrowPrecisionToFloat(x[0]), 0);
else
t.setTranslate(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[1]));
break;
case SVGTransform::SVG_TRANSFORM_ROTATE:
if (nr == 1)
t.setRotate(narrowPrecisionToFloat(x[0]), 0, 0);
else
t.setRotate(narrowPrecisionToFloat(x[0]), narrowPrecisionToFloat(x[1]), narrowPrecisionToFloat(x[2]));
break;
case SVGTransform::SVG_TRANSFORM_MATRIX:
t.setMatrix(AffineTransform(x[0], x[1], x[2], x[3], x[4], x[5]));
break;
}
ExceptionCode ec = 0;
list->appendItem(t, ec);
skipOptionalSpaces(currTransform, end);
if (currTransform < end && *currTransform == ',') {
delimParsed = true;
currTransform++;
}
skipOptionalSpaces(currTransform, end);
}
return !delimParsed;
}