static void _createCategories( QgsCategoryList& cats, QList<QVariant>& values, QgsSymbolV2* symbol, QgsVectorColorRampV2* ramp )
{
// sort the categories first
//TODO: make the order configurable?
QgsSymbolLayerV2Utils::sortVariantList( values, Qt::AscendingOrder );
int num = values.count();
bool hasNull = false;
for ( int i = 0; i < num; i++ )
{
QVariant value = values[i];
if ( value.toString().isNull() )
{
hasNull = true;
}
double x = i / ( double ) num;
QgsSymbolV2* newSymbol = symbol->clone();
newSymbol->setColor( ramp->color( x ) );
cats.append( QgsRendererCategoryV2( value, newSymbol, value.toString() ) );
}
// add null (default) value if not exists
if ( !hasNull )
{
QgsSymbolV2* newSymbol = symbol->clone();
newSymbol->setColor( ramp->color( 1 ) );
cats.append( QgsRendererCategoryV2( QVariant( "" ), newSymbol, QString() ) );
}
}
void QgsGraduatedSymbolRendererV2Widget::updateSymbolsFromWidget()
{
QgsSymbolV2SelectorWidget* dlg = qobject_cast<QgsSymbolV2SelectorWidget*>( sender() );
delete mGraduatedSymbol;
mGraduatedSymbol = dlg->symbol()->clone();
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
QItemSelectionModel* m = viewGraduated->selectionModel();
QModelIndexList selectedIndexes = m->selectedRows( 1 );
if ( m && !selectedIndexes.isEmpty() )
{
Q_FOREACH ( const QModelIndex& idx, selectedIndexes )
{
if ( idx.isValid() )
{
int rangeIdx = idx.row();
QgsSymbolV2* newRangeSymbol = mGraduatedSymbol->clone();
if ( selectedIndexes.count() > 1 )
{
//if updating multiple ranges, retain the existing range colors
newRangeSymbol->setColor( mRenderer->ranges().at( rangeIdx ).symbol()->color() );
}
mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
}
}
}
void QgsGraduatedSymbolRendererV2Widget::updateSymbolsFromWidget()
{
QgsRendererWidgetContainer* container = qobject_cast<QgsRendererWidgetContainer*>( mStackedWidget->currentWidget() );
QgsSymbolV2SelectorDialog* dlg = qobject_cast<QgsSymbolV2SelectorDialog*>( container->widget() );
delete mGraduatedSymbol;
mGraduatedSymbol = dlg->symbol()->clone();
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
QItemSelectionModel* m = viewGraduated->selectionModel();
QModelIndexList selectedIndexes = m->selectedRows( 1 );
if ( m && !selectedIndexes.isEmpty() )
{
Q_FOREACH ( const QModelIndex& idx, selectedIndexes )
{
if ( idx.isValid() )
{
int rangeIdx = idx.row();
QgsSymbolV2* newRangeSymbol = mGraduatedSymbol->clone();
newRangeSymbol->setColor( mRenderer->ranges()[rangeIdx].symbol()->color() );
mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
}
}
}
void QgsGraduatedSymbolRendererV2Widget::changeSelectedSymbols()
{
QItemSelectionModel* m = viewGraduated->selectionModel();
QModelIndexList selectedIndexes = m->selectedRows( 1 );
if ( m && !selectedIndexes.isEmpty() )
{
QgsSymbolV2* newSymbol = mGraduatedSymbol->clone();
QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
dlg.setMapCanvas( mMapCanvas );
if ( !dlg.exec() )
{
delete newSymbol;
return;
}
Q_FOREACH ( const QModelIndex& idx, selectedIndexes )
{
if ( idx.isValid() )
{
int rangeIdx = idx.row();
QgsSymbolV2* newRangeSymbol = newSymbol->clone();
newRangeSymbol->setColor( mRenderer->ranges()[rangeIdx].symbol()->color() );
mRenderer->updateRangeSymbol( rangeIdx, newRangeSymbol );
}
}
}
void QgsGraduatedSymbolRendererV2::updateColorRamp( QgsVectorColorRampV2 *ramp, bool inverted )
{
int i = 0;
if ( ramp )
{
setSourceColorRamp( ramp );
setInvertedColorRamp( inverted );
}
if ( mSourceColorRamp )
{
foreach ( QgsRendererRangeV2 range, mRanges )
{
QgsSymbolV2 *symbol = range.symbol() ? range.symbol()->clone() : 0;
if ( symbol )
{
double colorValue;
if ( inverted )
colorValue = ( mRanges.count() > 1 ? ( double )( mRanges.count() - i - 1 ) / ( mRanges.count() - 1 ) : 0 );
else
colorValue = ( mRanges.count() > 1 ? ( double ) i / ( mRanges.count() - 1 ) : 0 );
symbol->setColor( mSourceColorRamp->color( colorValue ) );
}
updateRangeSymbol( i, symbol );
++i;
}
}
void QgsCategorizedSymbolRendererV2::updateSymbols( QgsSymbolV2 * sym )
{
int i = 0;
foreach ( QgsRendererCategoryV2 cat, mCategories )
{
QgsSymbolV2* symbol = sym->clone();
symbol->setColor( cat.symbol()->color() );
updateCategorySymbol( i, symbol );
++i;
}
void QgsGraduatedSymbolRendererV2::updateColorRamp( QgsVectorColorRampV2 *ramp )
{
int i = 0;
foreach( QgsRendererRangeV2 range, mRanges )
{
QgsSymbolV2* symbol = range.symbol()->clone();
double colorValue = ( mRanges.count() > 1 ? ( double ) i / ( mRanges.count() - 1 ) : 0 );
symbol->setColor( ramp->color( colorValue ) );
updateRangeSymbol( i, symbol );
++i;
}
QgsSymbolV2* QgsSymbolV2::defaultSymbol( QGis::GeometryType geomType )
{
QgsSymbolV2* s;
switch ( geomType )
{
case QGis::Point: s = new QgsMarkerSymbolV2(); break;
case QGis::Line: s = new QgsLineSymbolV2(); break;
case QGis::Polygon: s = new QgsFillSymbolV2(); break;
default: QgsDebugMsg( "unknown layer's geometry type" ); return NULL;
}
s->setColor( QColor::fromHsv( rand() % 360, 64 + rand() % 192, 128 + rand() % 128 ) );
return s;
}
QgsSymbolV2* QgsSymbolV2::defaultSymbol( QGis::GeometryType geomType )
{
QgsSymbolV2* s = 0;
// override global default if project has a default for this type
QString defaultSymbol;
switch ( geomType )
{
case QGis::Point :
defaultSymbol = QgsProject::instance()->readEntry( "DefaultStyles", "/Marker", "" );
break;
case QGis::Line :
defaultSymbol = QgsProject::instance()->readEntry( "DefaultStyles", "/Line", "" );
break;
case QGis::Polygon :
defaultSymbol = QgsProject::instance()->readEntry( "DefaultStyles", "/Fill", "" );
break;
default: defaultSymbol = ""; break;
}
if ( defaultSymbol != "" )
s = QgsStyleV2::defaultStyle()->symbol( defaultSymbol );
// if no default found for this type, get global default (as previously)
if ( ! s )
{
switch ( geomType )
{
case QGis::Point: s = new QgsMarkerSymbolV2(); break;
case QGis::Line: s = new QgsLineSymbolV2(); break;
case QGis::Polygon: s = new QgsFillSymbolV2(); break;
default: QgsDebugMsg( "unknown layer's geometry type" ); return NULL;
}
}
// set alpha transparency
s->setAlpha( QgsProject::instance()->readDoubleEntry( "DefaultStyles", "/AlphaInt", 255 ) / 255.0 );
// set random color, it project prefs allow
if ( defaultSymbol == "" ||
QgsProject::instance()->readBoolEntry( "DefaultStyles", "/RandomColors", true ) )
{
s->setColor( QColor::fromHsv( qrand() % 360, 64 + qrand() % 192, 128 + qrand() % 128 ) );
}
return s;
}
void QgsCategorizedSymbolRendererV2Widget::changeSelectedSymbols()
{
QList<int> selectedCats = selectedCategories();
if ( selectedCats.size() > 0 )
{
QgsSymbolV2* newSymbol = mCategorizedSymbol->clone();
QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
if ( !dlg.exec() )
{
delete newSymbol;
return;
}
foreach ( const int idx, selectedCats )
{
QgsRendererCategoryV2 category = mRenderer->categories().value( idx );
QgsSymbolV2* newCatSymbol = newSymbol->clone();
newCatSymbol->setColor( mRenderer->categories()[idx].symbol()->color() );
mRenderer->updateCategorySymbol( idx, newCatSymbol );
}
void QgsCategorizedSymbolRendererV2Widget::changeSelectedSymbols()
{
QList<int> selectedCats = selectedCategories();
if ( !selectedCats.isEmpty() )
{
QgsSymbolV2* newSymbol = mCategorizedSymbol->clone();
QgsSymbolV2SelectorDialog dlg( newSymbol, mStyle, mLayer, this );
dlg.setMapCanvas( mMapCanvas );
if ( !dlg.exec() )
{
delete newSymbol;
return;
}
Q_FOREACH ( int idx, selectedCats )
{
QgsRendererCategoryV2 category = mRenderer->categories().value( idx );
QgsSymbolV2* newCatSymbol = newSymbol->clone();
newCatSymbol->setColor( mRenderer->categories()[idx].symbol()->color() );
mRenderer->updateCategorySymbol( idx, newCatSymbol );
}
QgsGraduatedSymbolRendererV2* QgsGraduatedSymbolRendererV2::createRenderer(
QgsVectorLayer* vlayer,
QString attrName,
int classes,
Mode mode,
QgsSymbolV2* symbol,
QgsVectorColorRampV2* ramp,
bool inverted )
{
if ( classes < 1 )
return NULL;
int attrNum = vlayer->fieldNameIndex( attrName );
double minimum;
double maximum;
QScopedPointer<QgsExpression> expression;
if ( attrNum == -1 )
{
// try to use expression
expression.reset( new QgsExpression( attrName ) );
if ( expression->hasParserError() || !expression->prepare( vlayer->pendingFields() ) )
return 0; // should have a means to report errors
QList<double> values;
QgsFeatureIterator fit = vlayer->getFeatures();
QgsFeature feature;
while ( fit.nextFeature( feature ) )
{
values << expression->evaluate( feature ).toDouble();
}
qSort( values );
minimum = values.first();
maximum = values.last();
}
else
{
minimum = vlayer->minimumValue( attrNum ).toDouble();
maximum = vlayer->maximumValue( attrNum ).toDouble();
}
QgsDebugMsg( QString( "min %1 // max %2" ).arg( minimum ).arg( maximum ) );
QList<double> breaks;
QList<int> labels;
if ( mode == EqualInterval )
{
breaks = _calcEqualIntervalBreaks( minimum, maximum, classes );
}
else if ( mode == Pretty )
{
breaks = _calcPrettyBreaks( minimum, maximum, classes );
}
else if ( mode == Quantile || mode == Jenks || mode == StdDev )
{
// get values from layer
QList<double> values;
QgsFeature f;
QStringList lst;
if ( expression.isNull() )
lst.append( attrName );
else
lst = expression->referencedColumns();
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( lst, vlayer->pendingFields() ) );
// create list of non-null attribute values
while ( fit.nextFeature( f ) )
{
QVariant v = expression.isNull() ? f.attribute( attrNum ) : expression->evaluate( f );
if ( !v.isNull() )
values.append( v.toDouble() );
}
// calculate the breaks
if ( mode == Quantile )
{
breaks = _calcQuantileBreaks( values, classes );
}
else if ( mode == Jenks )
{
breaks = _calcJenksBreaks( values, classes, minimum, maximum );
}
else if ( mode == StdDev )
{
breaks = _calcStdDevBreaks( values, classes, labels );
}
}
else
{
Q_ASSERT( false );
}
QgsRangeList ranges;
double lower, upper = minimum;
QString label;
// "breaks" list contains all values at class breaks plus maximum as last break
int i = 0;
for ( QList<double>::iterator it = breaks.begin(); it != breaks.end(); ++it, ++i )
{
lower = upper; // upper border from last interval
upper = *it;
if ( mode == StdDev )
{
if ( i == 0 )
{
label = "< " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
}
else if ( i == labels.count() - 1 )
{
label = ">= " + QString::number( labels[i-1], 'i', 0 ) + " Std Dev";
}
else
{
label = QString::number( labels[i-1], 'i', 0 ) + " Std Dev" + " - " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
}
}
else
{
label = QString::number( lower, 'f', 4 ) + " - " + QString::number( upper, 'f', 4 );
}
QgsSymbolV2* newSymbol = symbol->clone();
double colorValue;
if ( inverted ) colorValue = ( breaks.count() > 1 ? ( double )( breaks.count() - i - 1 ) / ( breaks.count() - 1 ) : 0 );
else colorValue = ( breaks.count() > 1 ? ( double ) i / ( breaks.count() - 1 ) : 0 );
newSymbol->setColor( ramp->color( colorValue ) ); // color from (0 / cl-1) to (cl-1 / cl-1)
ranges.append( QgsRendererRangeV2( lower, upper, newSymbol, label ) );
}
QgsGraduatedSymbolRendererV2* r = new QgsGraduatedSymbolRendererV2( attrName, ranges );
r->setSourceSymbol( symbol->clone() );
r->setSourceColorRamp( ramp->clone() );
r->setInvertedColorRamp( inverted );
r->setMode( mode );
return r;
}
QgsGraduatedSymbolRendererV2* QgsGraduatedSymbolRendererV2::createRenderer(
QgsVectorLayer* vlayer,
QString attrName,
int classes,
Mode mode,
QgsSymbolV2* symbol,
QgsVectorColorRampV2* ramp )
{
if ( classes < 1 )
return NULL;
int attrNum = vlayer->fieldNameIndex( attrName );
double minimum = vlayer->minimumValue( attrNum ).toDouble();
double maximum = vlayer->maximumValue( attrNum ).toDouble();
QgsDebugMsg( QString( "min %1 // max %2" ).arg( minimum ).arg( maximum ) );
QList<double> breaks;
QList<int> labels;
if ( mode == EqualInterval )
{
breaks = _calcEqualIntervalBreaks( minimum, maximum, classes );
}
else if ( mode == Pretty )
{
breaks = _calcPrettyBreaks( minimum, maximum, classes );
}
else if ( mode == Quantile || mode == Jenks || mode == StdDev )
{
// get values from layer
QList<double> values;
QgsFeature f;
QgsAttributeList lst;
lst.append( attrNum );
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( lst ) );
// create list of non-null attribute values
while ( fit.nextFeature( f ) )
if ( !f.attribute( attrNum ).isNull() )
values.append( f.attribute( attrNum ).toDouble() );
// calculate the breaks
if ( mode == Quantile )
{
breaks = _calcQuantileBreaks( values, classes );
}
else if ( mode == Jenks )
{
breaks = _calcJenksBreaks( values, classes, minimum, maximum );
}
else if ( mode == StdDev )
{
breaks = _calcStdDevBreaks( values, classes, labels );
}
}
else
{
Q_ASSERT( false );
}
QgsRangeList ranges;
double lower, upper = minimum;
QString label;
// "breaks" list contains all values at class breaks plus maximum as last break
int i = 0;
for ( QList<double>::iterator it = breaks.begin(); it != breaks.end(); ++it, ++i )
{
lower = upper; // upper border from last interval
upper = *it;
if ( mode == StdDev )
{
if ( i == 0 )
{
label = "< " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
}
else if ( i == labels.count() - 1 )
{
label = ">= " + QString::number( labels[i-1], 'i', 0 ) + " Std Dev";
}
else
{
label = QString::number( labels[i-1], 'i', 0 ) + " Std Dev" + " - " + QString::number( labels[i], 'i', 0 ) + " Std Dev";
}
}
else
{
label = QString::number( lower, 'f', 4 ) + " - " + QString::number( upper, 'f', 4 );
}
QgsSymbolV2* newSymbol = symbol->clone();
double colorValue = ( breaks.count() > 1 ? ( double ) i / ( breaks.count() - 1 ) : 0 );
newSymbol->setColor( ramp->color( colorValue ) ); // color from (0 / cl-1) to (cl-1 / cl-1)
ranges.append( QgsRendererRangeV2( lower, upper, newSymbol, label ) );
}
QgsGraduatedSymbolRendererV2* r = new QgsGraduatedSymbolRendererV2( attrName, ranges );
r->setSourceSymbol( symbol->clone() );
r->setSourceColorRamp( ramp->clone() );
r->setMode( mode );
return r;
}
QgsGrassEditRenderer::QgsGrassEditRenderer()
: QgsFeatureRendererV2( "grassEdit" )
, mLineRenderer( 0 )
, mMarkerRenderer( 0 )
{
QHash<int, QColor> colors;
//colors.insert( QgsGrassVectorMap::TopoUndefined, QColor( 125, 125, 125 ) );
colors.insert( QgsGrassVectorMap::TopoLine, QColor( Qt::black ) );
colors.insert( QgsGrassVectorMap::TopoBoundaryError, QColor( Qt::red ) );
colors.insert( QgsGrassVectorMap::TopoBoundaryErrorLeft, QColor( 255, 125, 0 ) );
colors.insert( QgsGrassVectorMap::TopoBoundaryErrorRight, QColor( 255, 125, 0 ) );
colors.insert( QgsGrassVectorMap::TopoBoundaryOk, QColor( Qt::green ) );
QHash<int, QString> labels;
//labels.insert( QgsGrassVectorMap::TopoUndefined, "Unknown type" );
labels.insert( QgsGrassVectorMap::TopoLine, "Line" );
labels.insert( QgsGrassVectorMap::TopoBoundaryError, "Boundary (topological error on both sides)" );
labels.insert( QgsGrassVectorMap::TopoBoundaryErrorLeft, "Boundary (topological error on the left side)" );
labels.insert( QgsGrassVectorMap::TopoBoundaryErrorRight, "Boundary (topological error on the right side)" );
labels.insert( QgsGrassVectorMap::TopoBoundaryOk, "Boundary (correct)" );
QgsCategoryList categoryList;
// first/last vertex marker to distinguish vertices from nodes
QgsMarkerLineSymbolLayerV2 * firstVertexMarkerLine = new QgsMarkerLineSymbolLayerV2( false );
QgsSimpleMarkerSymbolLayerV2 *markerSymbolLayer = new QgsSimpleMarkerSymbolLayerV2( QgsSimpleMarkerSymbolLayerBase::Cross2, 2 );
markerSymbolLayer->setColor( QColor( 255, 0, 0 ) );
markerSymbolLayer->setBorderColor( QColor( 255, 0, 0 ) );
markerSymbolLayer->setOutlineWidth( 0.5 );
QgsSymbolLayerV2List markerLayers;
markerLayers << markerSymbolLayer;
QgsMarkerSymbolV2 * markerSymbol = new QgsMarkerSymbolV2( markerLayers );
firstVertexMarkerLine->setSubSymbol( markerSymbol );
firstVertexMarkerLine->setPlacement( QgsMarkerLineSymbolLayerV2::FirstVertex );
QgsMarkerLineSymbolLayerV2 * lastVertexMarkerLine = static_cast<QgsMarkerLineSymbolLayerV2 *>( firstVertexMarkerLine->clone() );
lastVertexMarkerLine->setPlacement( QgsMarkerLineSymbolLayerV2::LastVertex );
Q_FOREACH ( int value, colors.keys() )
{
QgsSymbolV2 * symbol = QgsSymbolV2::defaultSymbol( QGis::Line );
symbol->setColor( colors.value( value ) );
symbol->appendSymbolLayer( firstVertexMarkerLine->clone() );
symbol->appendSymbolLayer( lastVertexMarkerLine->clone() );
categoryList << QgsRendererCategoryV2( QVariant( value ), symbol, labels.value( value ) );
}
delete firstVertexMarkerLine;
delete lastVertexMarkerLine;
mLineRenderer = new QgsCategorizedSymbolRendererV2( "topo_symbol", categoryList );
colors.clear();
labels.clear();
colors.insert( QgsGrassVectorMap::TopoPoint, QColor( 0, 255, 255 ) );
colors.insert( QgsGrassVectorMap::TopoCentroidIn, QColor( 0, 255, 0 ) );
colors.insert( QgsGrassVectorMap::TopoCentroidOut, QColor( 255, 0, 0 ) );
colors.insert( QgsGrassVectorMap::TopoCentroidDupl, QColor( 255, 0, 255 ) );
labels.insert( QgsGrassVectorMap::TopoPoint, "Point" );
labels.insert( QgsGrassVectorMap::TopoCentroidIn, "Centroid in area" );
labels.insert( QgsGrassVectorMap::TopoCentroidOut, "Centroid outside area" );
labels.insert( QgsGrassVectorMap::TopoCentroidDupl, "Duplicate centroid" );
categoryList.clear();
Q_FOREACH ( int value, colors.keys() )
{
QgsSymbolV2 * symbol = QgsSymbolV2::defaultSymbol( QGis::Point );
symbol->setColor( colors.value( value ) );
categoryList << QgsRendererCategoryV2( QVariant( value ), symbol, labels.value( value ) );
}
mMarkerRenderer = new QgsCategorizedSymbolRendererV2( "topo_symbol", categoryList );
}
