void QgsVectorGradientColorRampV2Dialog::updatePreview()
{
// update ramp stops from the tree widget
QgsGradientStopsList stops;
if ( groupStops->isChecked() )
{
int count = treeStops->topLevelItemCount();
for ( int i = 0; i < count; i++ )
{
QTreeWidgetItem* item = treeStops->topLevelItem( i );
double offset = item->data( 0, StopOffsetRole ).toDouble();
QColor color = item->data( 0, StopColorRole ).value<QColor>();
stops.append( QgsGradientStop( offset, color ) );
}
}
mRamp->setStops( stops );
// generate the preview
QSize size( 300, 40 );
lblPreview->setPixmap( QgsSymbolLayerV2Utils::colorRampPreviewPixmap( mRamp, size ) );
btnColor1->setColor( mRamp->color1() );
btnColor2->setColor( mRamp->color2() );
}
QgsVectorColorRampV2* QgsVectorGradientColorRampV2::create( const QgsStringMap& props )
{
// color1 and color2
QColor color1 = DEFAULT_GRADIENT_COLOR1;
QColor color2 = DEFAULT_GRADIENT_COLOR2;
if ( props.contains( "color1" ) )
color1 = QgsSymbolLayerV2Utils::decodeColor( props["color1"] );
if ( props.contains( "color2" ) )
color2 = QgsSymbolLayerV2Utils::decodeColor( props["color2"] );
//stops
QgsGradientStopsList stops;
if ( props.contains( "stops" ) )
{
Q_FOREACH ( const QString& stop, props["stops"].split( ':' ) )
{
int i = stop.indexOf( ';' );
if ( i == -1 )
continue;
QColor c = QgsSymbolLayerV2Utils::decodeColor( stop.mid( i + 1 ) );
stops.append( QgsGradientStop( stop.left( i ).toDouble(), c ) );
}
}