void QgsLayerTreeLayer::writeXML( QDomElement& parentElement )
{
QDomDocument doc = parentElement.ownerDocument();
QDomElement elem = doc.createElement( "layer-tree-layer" );
elem.setAttribute( "id", mLayerId );
elem.setAttribute( "name", layerName() );
elem.setAttribute( "checked", QgsLayerTreeUtils::checkStateToXml( mVisible ) );
elem.setAttribute( "expanded", mExpanded ? "1" : "0" );
writeCommonXML( elem );
parentElement.appendChild( elem );
}
void SVGRadialGradient::writeXML(xmlNodePtr node, Rect& bounds, bool hasModes, double opacity) {
Matrix m;
double w = bounds.right - bounds.left;
double h = bounds.bottom - bounds.top;
double shift = 0;
if(userSpace) {
m *= transform;
m.translate(cx * 20, cy * 20);
if(hasFocalPoint) {
double dx = fx - cx;
double dy = fy - cy;
m.rotate(atan2(dy, dx));
shift = sqrt(pow(dx, 2) + pow(dy, 2)) / r;
}
m.scale(r * 20 / 16348.0, r * 20 / 16384.0);
} else {
double _cx = bounds.left + cx * w;
double _cy = bounds.top + cy * h;
m.translate(_cx, _cy);
m.scale(r * w / 16348.0, r * h / 16384.0);
if(hasFocalPoint) {
double _fx = bounds.left + fx * w;
double _fy = bounds.top + fy * h;
double dx = _fx - _cx;
double dy = _fy - _cy;
m.rotate(atan2(dy, dx));
shift = sqrt(pow(dx, 2) + pow(dy, 2)) / (r * sqrt(pow(w, 2) + pow(h, 2)) / sqrt(2));
}
}
xmlNodePtr topNode;
if(hasFocalPoint) {
topNode = xmlNewChild(node, NULL, (const xmlChar *)"ShiftedRadialGradient", NULL);
char tmp[TMP_STRLEN];
snprintf(tmp, TMP_STRLEN, "%f", shift);
xmlSetProp(topNode, (const xmlChar *)"shift", (const xmlChar *)tmp);
} else {
topNode = xmlNewChild(node, NULL, (const xmlChar *)"RadialGradient", NULL);
}
writeCommonXML(topNode, m, hasModes, opacity);
}
void SVGLinearGradient::writeXML(xmlNodePtr node, Rect& bounds, bool hadModes, double opacity) {
double w = bounds.right - bounds.left;
double h = bounds.bottom - bounds.top;
Matrix m;
if(userSpace) {
double dx = x2 - x1;
double dy = y2 - y1;
double d = sqrt(dx * dx + dy * dy);
double a = atan2(dy, dx);
m *= transform;
m.translate((x1 + x2) / 2 * 20, (y1 + y2) / 2 * 20);
m.rotate(a);
m.scale(d * 20 / 32768);
} else {
double sx, sy;
double _x1 = bounds.left + x1 * w;
double _y1 = bounds.top + y1 * h;
double _x2 = bounds.left + x2 * w;
double _y2 = bounds.top + y2 * h;
if(x1 != x2) {
sx = (_x2 - _x1) / 32768.0;
} else {
sx = 1;
}
if(y1 != y2) {
sy = (_y2 - _y1) / 32768.0;
} else {
sy = 1;
}
double dx = x2 - x1;
double dy = y2 - y1;
double d = sqrt(dx * dx + dy * dy);
double a = atan2(dy, dx);
m.translate((_x1 + _x2) / 2, (_y1 + _y2) / 2);
m.scale(sx, sy);
m.rotate(a);
m.scale(d);
}
xmlNodePtr topNode = xmlNewChild(node, NULL, (const xmlChar *)"LinearGradient", NULL);
writeCommonXML(topNode, m, hadModes, opacity);
}
