QgsHeatmapRendererWidget::QgsHeatmapRendererWidget( QgsVectorLayer* layer, QgsStyleV2* style, QgsFeatureRendererV2* renderer )
: QgsRendererV2Widget( layer, style )
, mRenderer( nullptr )
{
if ( !layer )
{
return;
}
// the renderer only applies to point vector layers
if ( layer->geometryType() != QGis::Point )
{
//setup blank dialog
mRenderer = nullptr;
QGridLayout* layout = new QGridLayout( this );
QLabel* label = new QLabel( tr( "The heatmap renderer only applies to point and multipoint layers. \n"
"'%1' is not a point layer and cannot be rendered as a heatmap." )
.arg( layer->name() ), this );
layout->addWidget( label );
return;
}
setupUi( this );
mRadiusUnitWidget->setUnits( QgsSymbolV2::OutputUnitList() << QgsSymbolV2::MM << QgsSymbolV2::Pixel << QgsSymbolV2::MapUnit );
mWeightExpressionWidget->registerGetExpressionContextCallback( &_getExpressionContext, this );
if ( renderer )
{
mRenderer = QgsHeatmapRenderer::convertFromRenderer( renderer );
}
if ( !mRenderer )
{
mRenderer = new QgsHeatmapRenderer();
}
mRampComboBox->setShowGradientOnly( true );
mRampComboBox->populate( QgsStyleV2::defaultStyle() );
connect( mRampComboBox, SIGNAL( currentIndexChanged( int ) ), this, SLOT( applyColorRamp() ) );
connect( mRampComboBox, SIGNAL( sourceRampEdited() ), this, SLOT( applyColorRamp() ) );
connect( mButtonEditRamp, SIGNAL( clicked() ), mRampComboBox, SLOT( editSourceRamp() ) );
if ( mRenderer->colorRamp() )
{
mRampComboBox->blockSignals( true );
mRampComboBox->setSourceColorRamp( mRenderer->colorRamp() );
mRampComboBox->blockSignals( false );
}
mRadiusSpinBox->blockSignals( true );
mRadiusSpinBox->setValue( mRenderer->radius() );
mRadiusSpinBox->blockSignals( false );
mRadiusUnitWidget->blockSignals( true );
mRadiusUnitWidget->setUnit( mRenderer->radiusUnit() );
mRadiusUnitWidget->setMapUnitScale( mRenderer->radiusMapUnitScale() );
mRadiusUnitWidget->blockSignals( false );
mMaxSpinBox->blockSignals( true );
mMaxSpinBox->setValue( mRenderer->maximumValue() );
mMaxSpinBox->blockSignals( false );
mQualitySlider->blockSignals( true );
mQualitySlider->setValue( mRenderer->renderQuality() );
mQualitySlider->blockSignals( false );
mInvertCheckBox->blockSignals( true );
mInvertCheckBox->setChecked( mRenderer->invertRamp() );
mInvertCheckBox->blockSignals( false );
mWeightExpressionWidget->setLayer( layer );
mWeightExpressionWidget->setField( mRenderer->weightExpression() );
connect( mWeightExpressionWidget, SIGNAL( fieldChanged( QString ) ), this, SLOT( weightExpressionChanged( QString ) ) );
}
QgsHeatmapRendererWidget::QgsHeatmapRendererWidget( QgsVectorLayer* layer, QgsStyle* style, QgsFeatureRenderer* renderer )
: QgsRendererWidget( layer, style )
, mRenderer( nullptr )
{
if ( !layer )
{
return;
}
// the renderer only applies to point vector layers
if ( layer->geometryType() != QgsWkbTypes::PointGeometry )
{
//setup blank dialog
mRenderer = nullptr;
QLabel* label = new QLabel( tr( "The heatmap renderer only applies to point and multipoint layers. \n"
"'%1' is not a point layer and cannot be rendered as a heatmap." )
.arg( layer->name() ), this );
layout()->addWidget( label );
return;
}
setupUi( this );
this->layout()->setContentsMargins( 0, 0, 0, 0 );
mRadiusUnitWidget->setUnits( QgsUnitTypes::RenderUnitList() << QgsUnitTypes::RenderMillimeters << QgsUnitTypes::RenderPixels << QgsUnitTypes::RenderMapUnits
<< QgsUnitTypes::RenderPoints << QgsUnitTypes::RenderInches );
mWeightExpressionWidget->registerExpressionContextGenerator( this );
if ( renderer )
{
mRenderer = QgsHeatmapRenderer::convertFromRenderer( renderer );
}
if ( !mRenderer )
{
mRenderer = new QgsHeatmapRenderer();
}
btnColorRamp->setShowGradientOnly( true );
connect( btnColorRamp, &QgsColorRampButton::colorRampChanged, this, &QgsHeatmapRendererWidget::applyColorRamp );
if ( mRenderer->colorRamp() )
{
btnColorRamp->blockSignals( true );
btnColorRamp->setColorRamp( mRenderer->colorRamp() );
btnColorRamp->blockSignals( false );
}
mRadiusSpinBox->blockSignals( true );
mRadiusSpinBox->setValue( mRenderer->radius() );
mRadiusSpinBox->blockSignals( false );
mRadiusUnitWidget->blockSignals( true );
mRadiusUnitWidget->setUnit( mRenderer->radiusUnit() );
mRadiusUnitWidget->setMapUnitScale( mRenderer->radiusMapUnitScale() );
mRadiusUnitWidget->blockSignals( false );
mMaxSpinBox->blockSignals( true );
mMaxSpinBox->setValue( mRenderer->maximumValue() );
mMaxSpinBox->blockSignals( false );
mQualitySlider->blockSignals( true );
mQualitySlider->setValue( mRenderer->renderQuality() );
mQualitySlider->blockSignals( false );
mWeightExpressionWidget->setLayer( layer );
mWeightExpressionWidget->setField( mRenderer->weightExpression() );
connect( mWeightExpressionWidget, SIGNAL( fieldChanged( QString ) ), this, SLOT( weightExpressionChanged( QString ) ) );
}
