void QgsGraduatedSymbolRendererWidget::on_methodComboBox_currentIndexChanged( int idx )
{
toggleMethodWidgets( idx );
if ( idx == 0 )
{
mRenderer->setGraduatedMethod( QgsGraduatedSymbolRenderer::GraduatedColor );
QgsColorRamp* ramp = btnColorRamp->colorRamp();
if ( !ramp )
{
QMessageBox::critical( this, tr( "Error" ), tr( "No color ramp defined." ) );
return;
}
mRenderer->setSourceColorRamp( ramp );
reapplyColorRamp();
}
else
{
lblColorRamp->setVisible( false );
btnColorRamp->setVisible( false );
lblSize->setVisible( true );
minSizeSpinBox->setVisible( true );
lblSize->setVisible( true );
maxSizeSpinBox->setVisible( true );
mSizeUnitWidget->setVisible( true );
mRenderer->setGraduatedMethod( QgsGraduatedSymbolRenderer::GraduatedSize );
reapplySizes();
}
}
void QgsGraduatedSymbolRendererWidget::updateUiFromRenderer( bool updateCount )
{
disconnectUpdateHandlers();
updateGraduatedSymbolIcon();
// update UI from the graduated renderer (update combo boxes, view)
if ( mRenderer->mode() < cboGraduatedMode->count() )
cboGraduatedMode->setCurrentIndex( mRenderer->mode() );
// Only update class count if different - otherwise typing value gets very messy
int nclasses = mRenderer->ranges().count();
if ( nclasses && updateCount )
spinGraduatedClasses->setValue( mRenderer->ranges().count() );
// set column
QString attrName = mRenderer->classAttribute();
mExpressionWidget->setField( attrName );
mHistogramWidget->setSourceFieldExp( attrName );
// set source symbol
if ( mRenderer->sourceSymbol() )
{
delete mGraduatedSymbol;
mGraduatedSymbol = mRenderer->sourceSymbol()->clone();
updateGraduatedSymbolIcon();
}
mModel->setRenderer( mRenderer );
viewGraduated->setModel( mModel );
if ( mGraduatedSymbol )
{
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
}
// set source color ramp
methodComboBox->blockSignals( true );
if ( mRenderer->graduatedMethod() == QgsGraduatedSymbolRenderer::GraduatedColor )
{
methodComboBox->setCurrentIndex( 0 );
if ( mRenderer->sourceColorRamp() )
{
btnColorRamp->setColorRamp( mRenderer->sourceColorRamp() );
}
}
else
{
methodComboBox->setCurrentIndex( 1 );
if ( !mRenderer->ranges().isEmpty() ) // avoid overiding default size with zeros
{
minSizeSpinBox->setValue( mRenderer->minSymbolSize() );
maxSizeSpinBox->setValue( mRenderer->maxSymbolSize() );
}
}
toggleMethodWidgets( methodComboBox->currentIndex() );
methodComboBox->blockSignals( false );
QgsRendererRangeLabelFormat labelFormat = mRenderer->labelFormat();
txtLegendFormat->setText( labelFormat.format() );
spinPrecision->setValue( labelFormat.precision() );
cbxTrimTrailingZeroes->setChecked( labelFormat.trimTrailingZeroes() );
viewGraduated->resizeColumnToContents( 0 );
viewGraduated->resizeColumnToContents( 1 );
viewGraduated->resizeColumnToContents( 2 );
mHistogramWidget->refresh();
connectUpdateHandlers();
emit widgetChanged();
}
void QgsGraduatedSymbolRendererWidget::updateUiFromRenderer( bool updateCount )
{
disconnectUpdateHandlers();
updateGraduatedSymbolIcon();
spinSymmetryPointForOtherMethods->setShowClearButton( false );
// update UI from the graduated renderer (update combo boxes, view)
if ( cboGraduatedMode->findData( mRenderer->mode() ) >= 0 )
{
cboGraduatedMode->setCurrentIndex( cboGraduatedMode->findData( mRenderer->mode() ) );
}
// symmetric classification
const QgsGraduatedSymbolRenderer::Mode cboMode = static_cast< QgsGraduatedSymbolRenderer::Mode >( cboGraduatedMode->currentData().toInt() );
switch ( cboMode )
{
case QgsGraduatedSymbolRenderer::EqualInterval:
case QgsGraduatedSymbolRenderer::StdDev:
{
mGroupBoxSymmetric->setVisible( true );
cbxAstride->setVisible( true );
cboSymmetryPointForPretty->setVisible( false );
spinSymmetryPointForOtherMethods->setVisible( true );
spinSymmetryPointForOtherMethods->setValue( mRenderer->symmetryPoint() );
break;
}
case QgsGraduatedSymbolRenderer::Pretty:
{
mGroupBoxSymmetric->setVisible( true );
cbxAstride->setVisible( true );
spinSymmetryPointForOtherMethods->setVisible( false );
cboSymmetryPointForPretty->setVisible( true );
cboSymmetryPointForPretty->clear();
cboSymmetryPointForPretty->addItems( mRenderer->listForCboPrettyBreaks() );
// replace the combobox on the good old value
cboSymmetryPointForPretty->setCurrentText( QString::number( mRenderer->symmetryPoint(), 'f', 2 ) );
break;
}
case QgsGraduatedSymbolRenderer::Quantile:
case QgsGraduatedSymbolRenderer::Jenks:
case QgsGraduatedSymbolRenderer::Custom:
{
mGroupBoxSymmetric->setVisible( false );
cbxAstride->setVisible( false );
cboSymmetryPointForPretty->setVisible( false );
spinSymmetryPointForOtherMethods->setVisible( false );
spinSymmetryPointForOtherMethods->setValue( mRenderer->symmetryPoint() );
break;
}
}
if ( mRenderer->useSymmetricMode() )
{
mGroupBoxSymmetric->setChecked( true );
spinSymmetryPointForOtherMethods->setEnabled( true );
cbxAstride->setEnabled( true );
cboSymmetryPointForPretty->setEnabled( true );
}
else
{
mGroupBoxSymmetric->setChecked( false );
spinSymmetryPointForOtherMethods->setEnabled( false );
cbxAstride->setEnabled( false );
cboSymmetryPointForPretty->setEnabled( false );
}
if ( mRenderer->astride() )
cbxAstride->setChecked( true );
else
cbxAstride->setChecked( false );
// Only update class count if different - otherwise typing value gets very messy
int nclasses = mRenderer->ranges().count();
if ( nclasses && updateCount )
spinGraduatedClasses->setValue( mRenderer->ranges().count() );
// set column
QString attrName = mRenderer->classAttribute();
mExpressionWidget->setField( attrName );
mHistogramWidget->setSourceFieldExp( attrName );
// set source symbol
if ( mRenderer->sourceSymbol() )
{
mGraduatedSymbol.reset( mRenderer->sourceSymbol()->clone() );
updateGraduatedSymbolIcon();
}
mModel->setRenderer( mRenderer.get() );
viewGraduated->setModel( mModel );
if ( mGraduatedSymbol )
{
mSizeUnitWidget->blockSignals( true );
mSizeUnitWidget->setUnit( mGraduatedSymbol->outputUnit() );
mSizeUnitWidget->setMapUnitScale( mGraduatedSymbol->mapUnitScale() );
mSizeUnitWidget->blockSignals( false );
}
// set source color ramp
methodComboBox->blockSignals( true );
if ( mRenderer->graduatedMethod() == QgsGraduatedSymbolRenderer::GraduatedColor )
{
methodComboBox->setCurrentIndex( 0 );
if ( mRenderer->sourceColorRamp() )
{
btnColorRamp->setColorRamp( mRenderer->sourceColorRamp() );
}
}
else
{
methodComboBox->setCurrentIndex( 1 );
if ( !mRenderer->ranges().isEmpty() ) // avoid overriding default size with zeros
{
minSizeSpinBox->setValue( mRenderer->minSymbolSize() );
maxSizeSpinBox->setValue( mRenderer->maxSymbolSize() );
}
}
toggleMethodWidgets( methodComboBox->currentIndex() );
methodComboBox->blockSignals( false );
QgsRendererRangeLabelFormat labelFormat = mRenderer->labelFormat();
txtLegendFormat->setText( labelFormat.format() );
spinPrecision->setValue( labelFormat.precision() );
cbxTrimTrailingZeroes->setChecked( labelFormat.trimTrailingZeroes() );
viewGraduated->resizeColumnToContents( 0 );
viewGraduated->resizeColumnToContents( 1 );
viewGraduated->resizeColumnToContents( 2 );
mHistogramWidget->refresh();
connectUpdateHandlers();
emit widgetChanged();
}