void QgsMapToolChangeLabelProperties::canvasReleaseEvent( QMouseEvent *e )
{
Q_UNUSED( e );
QgsVectorLayer* vlayer = currentLayer();
if ( mLabelRubberBand && mCanvas && vlayer )
{
QString labeltext = QString(); // NULL QString signifies no expression
bool settingsOk;
QgsPalLayerSettings& labelSettings = currentLabelSettings( &settingsOk );
if ( settingsOk && labelSettings.isExpression )
{
labeltext = mCurrentLabelPos.labelText;
}
QgsLabelPropertyDialog d( mCurrentLabelPos.layerID, mCurrentLabelPos.featureId, mCurrentLabelPos.labelFont, labeltext, 0 );
if ( d.exec() == QDialog::Accepted )
{
const QgsAttributeMap& changes = d.changedProperties();
if ( changes.size() > 0 )
{
vlayer->beginEditCommand( tr( "Changed properties for label" ) + QString( " '%1'" ).arg( currentLabelText( 24 ) ) );
QgsAttributeMap::const_iterator changeIt = changes.constBegin();
for ( ; changeIt != changes.constEnd(); ++changeIt )
{
vlayer->changeAttributeValue( mCurrentLabelPos.featureId, changeIt.key(), changeIt.value() );
}
vlayer->endEditCommand();
mCanvas->refresh();
}
}
deleteRubberBands();
}
}
void QgsMapToolLabel::currentAlignment( QString& hali, QString& vali )
{
hali = "Left";
vali = "Bottom";
QgsFeature f;
if ( !currentFeature( f ) )
{
return;
}
const QgsAttributeMap& featureAttributes = f.attributeMap();
bool settingsOk;
QgsPalLayerSettings& labelSettings = currentLabelSettings( &settingsOk );
if ( settingsOk )
{
QMap< QgsPalLayerSettings::DataDefinedProperties, int > ddProperties = labelSettings.dataDefinedProperties;
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator haliIter = ddProperties.find( QgsPalLayerSettings::Hali );
if ( haliIter != ddProperties.constEnd() )
{
hali = featureAttributes[*haliIter].toString();
}
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator valiIter = ddProperties.find( QgsPalLayerSettings::Vali );
if ( valiIter != ddProperties.constEnd() )
{
vali = featureAttributes[*valiIter].toString();
}
}
}
bool QgsMapToolLabel::preserveRotation()
{
bool labelSettingsOk;
QgsPalLayerSettings& labelSettings = currentLabelSettings( &labelSettingsOk );
if ( labelSettingsOk )
{
return labelSettings.preserveRotation;
}
return true; // default, so there is no accidental data loss
}
QString QgsMapToolLabel::currentLabelText( int trunc )
{
bool settingsOk;
QgsPalLayerSettings& labelSettings = currentLabelSettings( &settingsOk );
if ( !settingsOk )
{
return "";
}
if ( labelSettings.isExpression )
{
QString labelText = mCurrentLabelPos.labelText;
if ( trunc > 0 && labelText.length() > trunc )
{
labelText.truncate( trunc );
labelText += "...";
}
return labelText;
}
else
{
QgsVectorLayer* vlayer = currentLayer();
if ( !vlayer )
{
return "";
}
QString labelField = vlayer->customProperty( "labeling/fieldName" ).toString();
if ( !labelField.isEmpty() )
{
int labelFieldId = vlayer->fieldNameIndex( labelField );
QgsFeature f;
if ( vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mCurrentLabelPos.featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
{
QString labelText = f.attribute( labelFieldId ).toString();
if ( trunc > 0 && labelText.length() > trunc )
{
labelText.truncate( trunc );
labelText += "...";
}
return labelText;
}
}
}
return "";
}
QFont QgsMapToolLabel::labelFontCurrentFeature()
{
QFont font;
QgsVectorLayer* vlayer = currentLayer();
bool labelSettingsOk;
QgsPalLayerSettings& labelSettings = currentLabelSettings( &labelSettingsOk );
if ( labelSettingsOk && vlayer )
{
font = labelSettings.textFont;
QgsFeature f;
if ( vlayer->getFeatures( QgsFeatureRequest().setFilterFid( mCurrentLabelPos.featureId ).setFlags( QgsFeatureRequest::NoGeometry ) ).nextFeature( f ) )
{
//size
int sizeIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Size, vlayer );
if ( sizeIndx != -1 )
{
if ( labelSettings.fontSizeInMapUnits )
{
font.setPixelSize( labelSettings.sizeToPixel( f.attribute( sizeIndx ).toDouble(),
QgsRenderContext(), QgsPalLayerSettings::MapUnits, true ) );
}
else
{
font.setPointSizeF( f.attribute( sizeIndx ).toDouble() );
}
}
//family
int fmIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Family, vlayer );
if ( fmIndx != -1 )
{
font.setFamily( f.attribute( fmIndx ).toString() );
}
//underline
int ulIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Underline, vlayer );
if ( ulIndx != -1 )
{
font.setUnderline( f.attribute( ulIndx ).toBool() );
}
//strikeout
int soIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Strikeout, vlayer );
if ( soIndx != -1 )
{
font.setStrikeOut( f.attribute( soIndx ).toBool() );
}
//bold
int boIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Bold, vlayer );
if ( boIndx != -1 )
{
font.setBold( f.attribute( boIndx ).toBool() );
}
//italic
int itIndx = dataDefinedColumnIndex( QgsPalLayerSettings::Italic, vlayer );
if ( itIndx != -1 )
{
font.setItalic( f.attribute( itIndx ).toBool() );
}
// TODO: Add other font data defined values (word spacing, etc.)
}
}
return font;
}
bool QgsMapToolLabel::rotationPoint( QgsPoint& pos, bool ignoreUpsideDown )
{
QVector<QgsPoint> cornerPoints = mCurrentLabelPos.cornerPoints;
if ( cornerPoints.size() < 4 )
{
return false;
}
if ( mCurrentLabelPos.upsideDown && !ignoreUpsideDown )
{
pos = mCurrentLabelPos.cornerPoints.at( 2 );
}
else
{
pos = mCurrentLabelPos.cornerPoints.at( 0 );
}
//alignment always center/center and rotation 0 for diagrams
if ( mCurrentLabelPos.isDiagram )
{
pos.setX( pos.x() + mCurrentLabelPos.labelRect.width() / 2.0 );
pos.setY( pos.y() + mCurrentLabelPos.labelRect.height() / 2.0 );
return true;
}
//adapt pos depending on data defined alignment
QString haliString, valiString;
currentAlignment( haliString, valiString );
if ( !mCurrentLabelPos.isPinned )
{
haliString = "Center";
valiString = "Half";
}
QFont labelFont = labelFontCurrentFeature();
QFontMetricsF labelFontMetrics( labelFont );
//label text?
QString labelText = currentLabelText();
bool labelSettingsOk;
QgsPalLayerSettings& labelSettings = currentLabelSettings( &labelSettingsOk );
if ( !labelSettingsOk )
{
return false;
}
double labelSizeX, labelSizeY;
labelSettings.calculateLabelSize( &labelFontMetrics, labelText, labelSizeX, labelSizeY );
double xdiff = 0;
double ydiff = 0;
if ( haliString.compare( "Center", Qt::CaseInsensitive ) == 0 )
{
xdiff = labelSizeX / 2.0;
}
else if ( haliString.compare( "Right", Qt::CaseInsensitive ) == 0 )
{
xdiff = labelSizeX;
}
if ( valiString.compare( "Top", Qt::CaseInsensitive ) == 0 || valiString.compare( "Cap", Qt::CaseInsensitive ) == 0 )
{
ydiff = labelSizeY;
}
else
{
double descentRatio = 1 / labelFontMetrics.ascent() / labelFontMetrics.height();
if ( valiString.compare( "Base", Qt::CaseInsensitive ) == 0 )
{
ydiff = labelSizeY * descentRatio;
}
else if ( valiString.compare( "Half", Qt::CaseInsensitive ) == 0 )
{
ydiff = labelSizeY * descentRatio;
ydiff = labelSizeY * 0.5 * ( 1 - descentRatio );
}
}
double angle = mCurrentLabelPos.rotation;
double xd = xdiff * cos( angle ) - ydiff * sin( angle );
double yd = xdiff * sin( angle ) + ydiff * cos( angle );
if ( mCurrentLabelPos.upsideDown && !ignoreUpsideDown )
{
pos.setX( pos.x() - xd );
pos.setY( pos.y() - yd );
}
else
{
pos.setX( pos.x() + xd );
pos.setY( pos.y() + yd );
}
return true;
}
QFont QgsMapToolLabel::labelFontCurrentFeature()
{
QFont font;
QgsVectorLayer* vlayer = currentLayer();
bool labelSettingsOk;
QgsPalLayerSettings& layerSettings = currentLabelSettings( &labelSettingsOk );
if ( labelSettingsOk && vlayer )
{
font = layerSettings.textFont;
QgsFeature f;
if ( vlayer->featureAtId( mCurrentLabelPos.featureId, f, false, true ) )
{
const QgsAttributeMap& attributes = f.attributeMap();
QMap< QgsPalLayerSettings::DataDefinedProperties, int > ddProperties = layerSettings.dataDefinedProperties;
//size
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator sizeIt = ddProperties.find( QgsPalLayerSettings::Size );
if ( sizeIt != ddProperties.constEnd() )
{
if ( layerSettings.fontSizeInMapUnits )
{
font.setPixelSize( layerSettings.sizeToPixel( attributes[*sizeIt].toDouble(), QgsRenderContext() ) );
}
else
{
font.setPointSizeF( attributes[*sizeIt].toDouble() );
}
}
//family
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator familyIt = ddProperties.find( QgsPalLayerSettings::Family );
if ( familyIt != ddProperties.constEnd() )
{
font.setFamily( attributes[*sizeIt].toString() );
}
//underline
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator underlineIt = ddProperties.find( QgsPalLayerSettings::Underline );
if ( familyIt != ddProperties.constEnd() )
{
font.setUnderline( attributes[*underlineIt].toBool() );
}
//strikeout
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator strikeoutIt = ddProperties.find( QgsPalLayerSettings::Strikeout );
if ( strikeoutIt != ddProperties.constEnd() )
{
font.setStrikeOut( attributes[*strikeoutIt].toBool() );
}
//bold
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator boldIt = ddProperties.find( QgsPalLayerSettings::Bold );
if ( boldIt != ddProperties.constEnd() )
{
font.setBold( attributes[*boldIt].toBool() );
}
//italic
QMap< QgsPalLayerSettings::DataDefinedProperties, int >::const_iterator italicIt = ddProperties.find( QgsPalLayerSettings::Italic );
if ( italicIt != ddProperties.constEnd() )
{
font.setItalic( attributes[*italicIt].toBool() );
}
}
}
return font;
}
