int QgsUniqueValueRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
int classificationId = vl.fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
//go on. Because with joins, it might be the joined layer is not loaded yet
}
setClassificationField( classificationId );
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* msy = new QgsSymbol( mGeometryType );
msy->readXML( symbolnode, &vl );
insertValue( msy->lowerValue(), msy );
symbolnode = symbolnode.nextSibling();
}
updateSymbolAttributes();
vl.setRenderer( this );
return 0;
}
QgsSingleSymbolRenderer::QgsSingleSymbolRenderer( QGis::GeometryType type )
{
mGeometryType = type;
//initial setting based on random color
QgsSymbol* sy = new QgsSymbol( mGeometryType );
//random fill colors for points and polygons and pen colors for lines
int red = 1 + ( int )( 255.0 * rand() / ( RAND_MAX + 1.0 ) );
int green = 1 + ( int )( 255.0 * rand() / ( RAND_MAX + 1.0 ) );
int blue = 1 + ( int )( 255.0 * rand() / ( RAND_MAX + 1.0 ) );
if ( type == QGis::Line )
{
sy->setColor( QColor( red, green, blue ) );
}
else
{
sy->setFillColor( QColor( red, green, blue ) );
sy->setFillStyle( Qt::SolidPattern );
sy->setColor( QColor( 0, 0, 0 ) );
}
mSymbol = sy;
updateSymbolAttributes();
}
void QgsUniqueValueRenderer::clearValues()
{
for ( QMap<QString, QgsSymbol*>::iterator it = mSymbols.begin(); it != mSymbols.end(); ++it )
{
delete it.value();
}
mSymbols.clear();
updateSymbolAttributes();
}
QgsSingleSymbolRenderer& QgsSingleSymbolRenderer::operator=( const QgsSingleSymbolRenderer & other )
{
if ( this != &other )
{
mGeometryType = other.mGeometryType;
delete mSymbol;
mSymbol = new QgsSymbol( *other.mSymbol );
}
updateSymbolAttributes();
return *this;
}
QgsUniqueValueRenderer::QgsUniqueValueRenderer( const QgsUniqueValueRenderer& other )
{
mGeometryType = other.mGeometryType;
mClassificationField = other.mClassificationField;
QMap<QString, QgsSymbol*> s = other.mSymbols;
for ( QMap<QString, QgsSymbol*>::iterator it = s.begin(); it != s.end(); ++it )
{
QgsSymbol* s = new QgsSymbol( * it.value() );
insertValue( it.key(), s );
}
updateSymbolAttributes();
}
void QgsGraduatedSymbolRenderer::removeSymbols()
{
//free the memory first
for ( QList<QgsSymbol*>::iterator it = mSymbols.begin(); it != mSymbols.end(); ++it )
{
delete *it;
}
//and remove the pointers then
mSymbols.clear();
updateSymbolAttributes();
}
QgsGraduatedSymbolRenderer::QgsGraduatedSymbolRenderer( const QgsGraduatedSymbolRenderer& other )
{
mMode = other.mMode;
mGeometryType = other.mGeometryType;
mClassificationField = other.mClassificationField;
const QList<QgsSymbol*> s = other.symbols();
for ( QList<QgsSymbol*>::const_iterator it = s.begin(); it != s.end(); ++it )
{
addSymbol( new QgsSymbol( **it ) );
}
updateSymbolAttributes();
}
QgsUniqueValueRenderer& QgsUniqueValueRenderer::operator=( const QgsUniqueValueRenderer & other )
{
if ( this != &other )
{
mGeometryType = other.mGeometryType;
mClassificationField = other.mClassificationField;
clearValues();
for ( QMap<QString, QgsSymbol*>::iterator it = mSymbols.begin(); it != mSymbols.end(); ++it )
{
QgsSymbol* s = new QgsSymbol( *it.value() );
insertValue( it.key(), s );
}
updateSymbolAttributes();
}
return *this;
}
int QgsGraduatedSymbolRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode modeNode = rnode.namedItem( "mode" );
QString modeValue = modeNode.toElement().text();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
if ( modeValue == "Empty" )
{
mMode = QgsGraduatedSymbolRenderer::Empty;
}
else if ( modeValue == "Quantile" )
{
mMode = QgsGraduatedSymbolRenderer::Quantile;
}
else //default
{
mMode = QgsGraduatedSymbolRenderer::EqualInterval;
}
int classificationId = theProvider->fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
return 2; //@todo: handle gracefully in gui situation where user needs to nominate field
}
setClassificationField( classificationId );
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* sy = new QgsSymbol( mGeometryType );
sy->readXML( symbolnode, &vl );
addSymbol( sy );
symbolnode = symbolnode.nextSibling();
}
updateSymbolAttributes();
vl.setRenderer( this );
return 0;
}
int QgsGraduatedSymbolRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode modeNode = rnode.namedItem( "mode" );
QString modeValue = modeNode.toElement().text();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
if ( modeValue == "Empty" )
{
mMode = QgsGraduatedSymbolRenderer::Empty;
}
else if ( modeValue == "Quantile" )
{
mMode = QgsGraduatedSymbolRenderer::Quantile;
}
else //default
{
mMode = QgsGraduatedSymbolRenderer::EqualInterval;
}
int classificationId = vl.fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
//go on. Because with joins, it might be the joined layer is not loaded yet
}
setClassificationField( classificationId );
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* sy = new QgsSymbol( mGeometryType );
sy->readXML( symbolnode, &vl );
addSymbol( sy );
symbolnode = symbolnode.nextSibling();
}
updateSymbolAttributes();
vl.setRenderer( this );
return 0;
}
int QgsSingleSymbolRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QgsSymbol* sy = new QgsSymbol( mGeometryType );
QDomNode synode = rnode.namedItem( "symbol" );
if ( synode.isNull() )
{
QgsDebugMsg( "No symbol node in project file's renderitem Dom" );
// XXX abort?
}
else
{
sy->readXML( synode, &vl );
}
updateSymbolAttributes();
//create a renderer and add it to the vector layer
addSymbol( sy );
vl.setRenderer( this );
return 0;
}
void QgsSingleSymbolRenderer::addSymbol( QgsSymbol* sy )
{
delete mSymbol;
mSymbol = sy;
updateSymbolAttributes();
}
QgsSingleSymbolRenderer::QgsSingleSymbolRenderer( const QgsSingleSymbolRenderer& other )
{
mGeometryType = other.mGeometryType;
mSymbol = new QgsSymbol( *other.mSymbol );
updateSymbolAttributes();
}