void testPieDiagram()
{
QgsDiagramSettings ds;
QColor col1 = Qt::red;
QColor col2 = Qt::yellow;
col1.setAlphaF( 0.5 );
col2.setAlphaF( 0.5 );
ds.categoryColors = QList<QColor>() << col1 << col2;
ds.categoryAttributes = QList<QString>() << "\"Pilots\"" << "\"Cabin Crew\"";
ds.maxScaleDenominator = -1;
ds.minScaleDenominator = -1;
ds.minimumSize = 0;
ds.penColor = Qt::green;
ds.penWidth = .5;
ds.scaleByArea = true;
ds.sizeType = QgsUnitTypes::RenderMillimeters;
ds.size = QSizeF( 5, 5 );
ds.angleOffset = 0;
QgsLinearlyInterpolatedDiagramRenderer *dr = new QgsLinearlyInterpolatedDiagramRenderer();
dr->setLowerValue( 0.0 );
dr->setLowerSize( QSizeF( 0.0, 0.0 ) );
dr->setUpperValue( 10 );
dr->setUpperSize( QSizeF( 40, 40 ) );
dr->setClassificationAttribute( 5 ); // Staff
dr->setDiagram( new QgsPieDiagram() );
dr->setDiagramSettings( ds );
mPointsLayer->setDiagramRenderer( dr );
QgsDiagramLayerSettings dls = QgsDiagramLayerSettings();
dls.setPlacement( QgsDiagramLayerSettings::OverPoint );
dls.setShowAllDiagrams( true );
mPointsLayer->setDiagramLayerSettings( dls );
QVERIFY( imageCheck( "piediagram" ) );
}
void qgis_dev_layerPropDialog::apply()
{
QSettings().setValue( "/Windows/VectorLayerProperties/diagram/tab",
mDiagramPropertiesTabWidget->currentIndex() );
if ( !mDisplayDiagramsGroupBox->isChecked() ) {m_layer->setDiagramRenderer( 0 ); return;}
QgsDiagram* diagram = 0;
int index = diagramType_comboBox->currentIndex();
QString diagramType = diagramType_comboBox->itemData( index ).toString();
if ( 0 == mDiagramAttributesTreeWidget->topLevelItemCount() )
{
qgis_dev::instance()->messageBar()->pushMessage(
tr( "Diagrams: No attributes added." ),
tr( "You did not add any attributes to this diagram layer. Please specify the attributes to visualize on the diagrams or disable diagrams." ),
QgsMessageBar::WARNING );
}
bool scaleAttributeValueOk = false;
// Check if a (usable) scale attribute value is inserted
mValueLineEdit->text().toDouble( &scaleAttributeValueOk );
if ( !mFixedSizeCheckBox->isChecked() && !scaleAttributeValueOk )
{
double maxVal = DBL_MIN;
QgsVectorDataProvider* provider = m_layer->dataProvider();
if ( provider )
{
if ( diagramType == DIAGRAM_NAME_HISTOGRAM )
{
// Find maximum value
for ( int i = 0; i < mDiagramAttributesTreeWidget->topLevelItemCount(); ++i )
{
QString fldName = mDiagramAttributesTreeWidget->topLevelItem( i )->data( 0, Qt::UserRole ).toString();
if ( fldName.count() >= 2 && fldName.at( 0 ) == '"' && fldName.at( fldName.count() - 1 ) == '"' )
{
fldName = fldName.mid( 1, fldName.count() - 2 ); // remove enclosing double quotes
}
int fld = provider->fieldNameIndex( fldName );
if ( fld != -1 )
{
bool ok = false;
double val = provider->maximumValue( fld ).toDouble( &ok );
if ( ok )
{
maxVal = qMax( maxVal, val );
}
}
}
}
else
{
maxVal = provider->maximumValue( mSizeAttributeComboBox->itemData( mSizeAttributeComboBox->currentIndex() ).toInt() ).toDouble();
}
}
if ( maxVal != DBL_MIN )
{
qgis_dev::instance()->messageBar()->pushMessage(
tr( "Interpolation value" ),
tr( "You did not specify an interpolation value. A default value of %1 has been set." ).arg( QString::number( maxVal ) ),
QgsMessageBar::INFO,
5 );
mValueLineEdit->setText( QString::number( maxVal ) );
}
}
if ( diagramType == DIAGRAM_NAME_TEXT )
{
diagram = new QgsTextDiagram();
}
else if ( diagramType == DIAGRAM_NAME_PIE )
{
diagram = new QgsPieDiagram();
}
else // if ( diagramType == DIAGRAM_NAME_HISTOGRAM )
{
diagram = new QgsHistogramDiagram();
}
QgsDiagramSettings ds;
ds.font = font_comboBox->currentFont(); // 字体
ds.transparency = mTransparencySlider->value(); // 透明度
QList<QColor> categoryColors;
QList<QString> categoryAttributes;
for ( int i = 0; i < mDiagramAttributesTreeWidget->topLevelItemCount(); ++i )
{
QColor color = mDiagramAttributesTreeWidget->topLevelItem( i )->background( 1 ).color();
color.setAlpha( 255 - ds.transparency );
categoryColors.append( color );
categoryAttributes.append( mDiagramAttributesTreeWidget->topLevelItem( i )->data( 0, Qt::UserRole ).toString() );
}
ds.categoryColors = categoryColors;
ds.categoryAttributes = categoryAttributes;
//ds.size = QSizeF( mDiagramSizeSpinBox->value(), mDiagramSizeSpinBox->value() );
ds.size = QSizeF( 50, 50 );
//ds.sizeType = static_cast<QgsDiagramSettings::SizeType>( mDiagramUnitComboBox->itemData( mDiagramUnitComboBox->currentIndex() ).toInt() );
ds.sizeType = static_cast<QgsDiagramSettings::SizeType>( 0 );
ds.labelPlacementMethod = static_cast<QgsDiagramSettings::LabelPlacementMethod>( mLabelPlacementComboBox->itemData( mLabelPlacementComboBox->currentIndex() ).toInt() );
//ds.scaleByArea = mScaleDependencyComboBox->itemData( mScaleDependencyComboBox->currentIndex() ).toBool();
ds.scaleByArea = false;
if ( mIncreaseSmallDiagramsGroupBox->isChecked() )
{
ds.minimumSize = mIncreaseMinimumSizeSpinBox->value();
}
else
{
ds.minimumSize = 0;
}
/*ds.backgroundColor = mBackgroundColorButton->backgroundColor();
ds.penColor = mDiagramPenColorButton->backgroundColor();*/
ds.backgroundColor = QColor( 255, 0, 0 );
ds.penColor = QColor( 255, 255, 0 );
ds.penWidth = mPenWidthSpinBox->value();
if ( mVisibilityGroupBox->isChecked() )
{
ds.minScaleDenominator = mMinimumDiagramScaleLineEdit->text().toDouble();
ds.maxScaleDenominator = mMaximumDiagramScaleLineEdit->text().toDouble();
}
else
{
ds.minScaleDenominator = -1;
ds.maxScaleDenominator = -1;
}
// Diagram angle offset (pie)
ds.angleOffset = mAngleOffsetComboBox->itemData( mAngleOffsetComboBox->currentIndex() ).toInt();
// Diagram orientation (histogram)
//ds.diagramOrientation = static_cast<QgsDiagramSettings::DiagramOrientation>( mOrientationButtonGroup->checkedButton()->property( "direction" ).toInt() );
ds.diagramOrientation = static_cast<QgsDiagramSettings::DiagramOrientation>( 0 );
ds.barWidth = mBarWidthSpinBox->value();
if ( mFixedSizeCheckBox->isChecked() )
{
QgsSingleCategoryDiagramRenderer* dr = new QgsSingleCategoryDiagramRenderer();
dr->setDiagram( diagram );
dr->setDiagramSettings( ds );
m_layer->setDiagramRenderer( dr );
}
else
{
QgsLinearlyInterpolatedDiagramRenderer* dr = new QgsLinearlyInterpolatedDiagramRenderer();
dr->setLowerValue( 0.0 );
dr->setLowerSize( QSizeF( 0.0, 0.0 ) );
dr->setUpperValue( mValueLineEdit->text().toDouble() );
dr->setUpperSize( QSizeF( mSizeSpinBox->value(), mSizeSpinBox->value() ) );
bool isExpression = mSizeAttributeComboBox->currentIndex() >= m_availableAttributeCount;
dr->setClassificationAttributeIsExpression( isExpression );
if ( isExpression )
{
dr->setClassificationAttributeExpression( mSizeAttributeComboBox->currentText() );
}
else
{
dr->setClassificationAttribute( mSizeAttributeComboBox->itemData( mSizeAttributeComboBox->currentIndex() ).toInt() );
}
dr->setDiagram( diagram );
dr->setDiagramSettings( ds );
m_layer->setDiagramRenderer( dr );
}
QgsDiagramLayerSettings dls;
dls.dist = mDiagramDistanceSpinBox->value();
dls.priority = mPrioritySlider->value();
if ( mDataDefinedPositionGroupBox->isChecked() )
{
//dls.xPosColumn = mDataDefinedXComboBox->itemData( mDataDefinedXComboBox->currentIndex() ).toInt();
//dls.yPosColumn = mDataDefinedYComboBox->itemData( mDataDefinedYComboBox->currentIndex() ).toInt();
dls.xPosColumn = -1;
dls.yPosColumn = -1;
}
else
{
dls.xPosColumn = -1;
dls.yPosColumn = -1;
}
dls.placement = ( QgsDiagramLayerSettings::Placement )mPlacementComboBox->itemData( mPlacementComboBox->currentIndex() ).toInt();
if ( mLineOptionsComboBox->isEnabled() )
{
dls.placementFlags = static_cast<QgsDiagramLayerSettings::LinePlacementFlags>( mLineOptionsComboBox->itemData( mLineOptionsComboBox->currentIndex() ).toInt() );
}
m_layer->setDiagramLayerSettings( dls );
}