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;
}
