void QgsQuickPrint::scaleTextLabels( int theScaleFactor, SymbolScalingType theDirection )
{
if ( 0 >= theScaleFactor )
{
QgsDebugMsg( "invalid scale factor" );
return;
}
QStringList myLayerSet = mpMapRenderer->layerSet();
QStringListIterator myLayerIterator( myLayerSet );
while ( myLayerIterator.hasNext() )
{
QString myLayerId = myLayerIterator.next();
QgsDebugMsg( "Scaling text labels for print for " + myLayerId );
QgsMapLayer * mypLayer =
QgsMapLayerRegistry::instance()->mapLayer( myLayerId );
if ( mypLayer )
{
QgsVectorLayer *mypVectorLayer =
qobject_cast<QgsVectorLayer *>( mypLayer );
if ( mypVectorLayer )
{
QgsLabel * mypLabel = mypVectorLayer->label();
QgsLabelAttributes * mypLabelAttributes = mypLabel->labelAttributes();
if ( theDirection == ScaleUp )
{
mypLabelAttributes->setSize(
mypLabelAttributes->size() * theScaleFactor,
mypLabelAttributes->sizeType() );
}
else //scale down
{
mypLabelAttributes->setSize(
mypLabelAttributes->size() / theScaleFactor,
mypLabelAttributes->sizeType() );
}
} //if vectorlayer
} //if maplayer
} //layer iterator
}
void QgsLabelDialog::init()
{
QgsDebugMsg( "entering." );
QgsLabelAttributes * myLabelAttributes = mLabel->labelAttributes();
//populate a string list with all the field names which will be used to set up the
//data bound combos
const QgsFields& myFields = mLabel->fields();
QStringList myFieldStringList;
myFieldStringList.append( "" );
for ( int i = 0; i < myFields.count(); ++i )
{
myFieldStringList.append( myFields[i].name() );
}
//
//now set all the combos that need field lists using the string list
//
cboLabelField->clear();
cboLabelField->addItems( myFieldStringList );
cboLabelField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Text ), myFieldStringList ) );
cboFontField->clear();
cboFontField->addItems( myFieldStringList );
cboFontField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Family ), myFieldStringList ) );
cboBoldField->clear();
cboBoldField->addItems( myFieldStringList );
cboBoldField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Bold ), myFieldStringList ) );
cboItalicField->clear();
cboItalicField->addItems( myFieldStringList );
cboItalicField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Italic ), myFieldStringList ) );
cboUnderlineField->clear();
cboUnderlineField->addItems( myFieldStringList );
cboUnderlineField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Underline ), myFieldStringList ) );
cboStrikeOutField->clear();
cboStrikeOutField->addItems( myFieldStringList );
cboStrikeOutField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::StrikeOut ), myFieldStringList ) );
cboFontSizeField->clear();
cboFontSizeField->addItems( myFieldStringList );
cboFontSizeField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Size ), myFieldStringList ) );
cboFontSizeTypeField->clear();
cboFontSizeTypeField->addItems( myFieldStringList );
cboFontSizeTypeField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::SizeType ), myFieldStringList ) );
#if 0
cboFontTransparencyField->clear();
cboFontTransparencyField->addItems( myFieldStringList );
cboFontTransparencyField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::FontTransparency ), myFieldStringList ) );
#endif
cboFontColorField->clear();
cboFontColorField->addItems( myFieldStringList );
cboFontColorField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Color ), myFieldStringList ) );
cboBufferSizeField->clear();
cboBufferSizeField->addItems( myFieldStringList );
cboBufferSizeField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::BufferSize ), myFieldStringList ) );
cboBufferTransparencyField->clear();
cboBufferTransparencyField->addItems( myFieldStringList );
//cboBufferTransparencyField->setCurrentIndex(itemNoForField(mLabel->labelField(QgsLabel::BufferTransparency),myFieldStringList));
cboXCoordinateField->clear();
cboXCoordinateField->addItems( myFieldStringList );
cboXCoordinateField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::XCoordinate ), myFieldStringList ) );
cboYCoordinateField->clear();
cboYCoordinateField->addItems( myFieldStringList );
cboYCoordinateField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::YCoordinate ), myFieldStringList ) );
cboXOffsetField->clear();
cboXOffsetField->addItems( myFieldStringList );
cboXOffsetField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::XOffset ), myFieldStringList ) );
cboYOffsetField->clear();
cboYOffsetField->addItems( myFieldStringList );
cboYOffsetField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::YOffset ), myFieldStringList ) );
cboAlignmentField->clear();
cboAlignmentField->addItems( myFieldStringList );
cboAlignmentField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Alignment ), myFieldStringList ) );
cboAngleField->clear();
cboAngleField->addItems( myFieldStringList );
cboAngleField->setCurrentIndex( itemNoForField( mLabel->labelField( QgsLabel::Angle ), myFieldStringList ) );
// set up the scale based layer visibility stuff....
chkUseScaleDependentRendering->setChecked( mLabel->scaleBasedVisibility() );
leMinimumScale->setText( QString::number( mLabel->minScale(), 'f' ) );
leMinimumScale->setValidator( new QDoubleValidator( 0, std::numeric_limits<float>::max(), 1000, this ) );
leMaximumScale->setText( QString::number( mLabel->maxScale(), 'f' ) );
leMaximumScale->setValidator( new QDoubleValidator( 0, std::numeric_limits<float>::max(), 1000, this ) );
//
//set the non-databound fields up now
//
leDefaultLabel->setText( myLabelAttributes->text() );
mFont.setFamily( myLabelAttributes->family() );
if ( myLabelAttributes->sizeIsSet() )
{
mFont.setPointSizeF( myLabelAttributes->size() );
int myTypeInt = myLabelAttributes->sizeType();
cboFontSizeUnits->setCurrentIndex( myTypeInt == QgsLabelAttributes::PointUnits ? 0 : 1 );
}
else //defaults for when no size has been set
{
mFont.setPointSizeF( myLabelAttributes->size() );
cboFontSizeUnits->setCurrentIndex( 0 );
}
spinFontSize->setValue( myLabelAttributes->size() );
if ( myLabelAttributes->boldIsSet() )
{
mFont.setBold( myLabelAttributes->bold() );
}
else
{
mFont.setBold( false );
}
if ( myLabelAttributes->italicIsSet() )
{
mFont.setItalic( myLabelAttributes->italic() );
}
else
{
mFont.setItalic( false );
}
if ( myLabelAttributes->underlineIsSet() )
{
mFont.setUnderline( myLabelAttributes->underline() );
}
else
{
mFont.setUnderline( false );
}
if ( myLabelAttributes->strikeOutIsSet() )
{
mFont.setStrikeOut( myLabelAttributes->strikeOut() );
}
else
{
mFont.setStrikeOut( false );
}
mFontColor = myLabelAttributes->color();
if ( myLabelAttributes->offsetIsSet() )
{
int myTypeInt = myLabelAttributes->offsetType();
cboOffsetUnits->setCurrentIndex( myTypeInt == QgsLabelAttributes::PointUnits ? 0 : 1 );
spinXOffset->setValue( myLabelAttributes->xOffset() );
spinYOffset->setValue( myLabelAttributes->yOffset() );
}
else //defaults for when no offset is defined
{
cboOffsetUnits->setCurrentIndex( 0 );
spinXOffset->setValue( 0 );
spinYOffset->setValue( 0 );
}
spinAngle->setRange( -1, 360 );
spinAngle->setSpecialValueText( tr( "Auto" ) );
if ( myLabelAttributes->angleIsAuto() )
{
spinAngle->setValue( -1 );
}
else
{
spinAngle->setValue( static_cast<int>( myLabelAttributes->angle() ) );
}
//the values here may seem a bit counterintuitive - basically everything
//is the reverse of the way you think it should be...
//TODO investigate in QgsLabel why this needs to be the case
//TODO add support for corners (e.g. bottom right) to xml serialiser
if ( myLabelAttributes->alignment() == ( Qt::AlignRight | Qt::AlignBottom ) ) radioAboveLeft->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignRight | Qt::AlignTop ) ) radioBelowLeft->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignLeft | Qt::AlignBottom ) ) radioAboveRight->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignLeft | Qt::AlignTop ) ) radioBelowRight->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignRight | Qt::AlignVCenter ) ) radioLeft->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignLeft | Qt::AlignVCenter ) ) radioRight->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignBottom | Qt::AlignHCenter ) ) radioAbove->setChecked( true );
if ( myLabelAttributes->alignment() == ( Qt::AlignTop | Qt::AlignHCenter ) ) radioBelow->setChecked( true );
if ( myLabelAttributes->alignment() == Qt::AlignCenter ) radioOver->setChecked( true );
mBufferColor = myLabelAttributes->bufferColor();
//note that it could be that buffer properties are set, but the bufer is disabled
if ( myLabelAttributes->bufferSizeIsSet() )
{
int myTypeInt = myLabelAttributes->bufferSizeType();
cboBufferSizeUnits->setCurrentIndex( myTypeInt == QgsLabelAttributes::PointUnits ? 0 : 1 );
spinBufferSize->setValue( myLabelAttributes->bufferSize() );
}
else //defaults for when no offset is defined
{
cboBufferSizeUnits->setCurrentIndex( 0 );
spinBufferSize->setValue( 1 );
}
//set the state of the multiline enabled checkbox
chkUseMultiline->setChecked( myLabelAttributes->multilineEnabled() );
//set the state of the selected features only checkbox
chkSelectedOnly->setChecked( myLabelAttributes->selectedOnly() );
//set the state of the buffer enabled checkbox
chkUseBuffer->setChecked( myLabelAttributes->bufferEnabled() );
//NOTE: do we need this line too? TS
spinBufferSize->setValue( myLabelAttributes->bufferSize() );
}
void MainWindow::addLayer()
{
QString myLayerPath = "../data";
QString myLayerBaseName = "test";
QString myProviderName = "ogr";
QgsVectorLayer * mypLayer = new QgsVectorLayer(myLayerPath, myLayerBaseName, myProviderName);
if (mypLayer->isValid())
{
qDebug("Layer is valid");
}
else
{
qDebug("Layer is NOT valid");
return;
}
//set up a renderer for the layer
QgsSingleSymbolRenderer *mypRenderer = new QgsSingleSymbolRenderer(mypLayer->geometryType());
QList<QgsMapCanvasLayer> myLayerSet;
mypLayer->setRenderer(mypRenderer);
//
//set up labelling for the layer
//
//get the label instance associated with the layer
QgsLabel * mypLabel;
mypLabel = mypLayer->label();
//and the label attributes associated with the label
QgsLabelAttributes * mypLabelAttributes;
mypLabelAttributes = mypLabel->layerAttributes();
//note in QGIS 1.4 and up you should use mypLabel->labelAttributes rather
//get the field list associated with the layer
//we'll print the names out to console for diagnostic purposes
QgsFieldMap myFields = mypLayer->dataProvider()->fields();
for (unsigned int i = 0; i < myFields.size(); i++ )
{
qDebug("Field Name: " + QString(myFields[i].name()).toLocal8Bit() );
}
//just use the last field's name in the fields list as the label field!
qDebug("set label field to " + QString(myFields[myFields.size()-1].name()).toLocal8Bit());
mypLabel->setLabelField( QgsLabel::Text, myFields.size()-1);
//set the colour of the label text
mypLabelAttributes->setColor(Qt::black);
//create a 'halo' effect around each label so it
//can still be read on dark backgrounds
mypLabelAttributes->setBufferEnabled(true);
mypLabelAttributes->setBufferColor(Qt::yellow);
int myType = QgsLabelAttributes::PointUnits;
mypLabelAttributes->setBufferSize(1,myType);
/*
* Here are a bunch of other things you can set based on values on a database field
* the second parameter in each case would be the field name from which the
* attribute can be retrieved.
mypLabel->setLabelField( QgsLabel::Family, "fontFamily" );
mypLabel->setLabelField( QgsLabel::Bold, "fontIsBold" );
mypLabel->setLabelField( QgsLabel::Italic, "fontIsItalic" );
mypLabel->setLabelField( QgsLabel::Underline, "fontIsUnderlined" );
mypLabel->setLabelField( QgsLabel::Size, "fontSize" );
mypLabel->setLabelField( QgsLabel::BufferSize,"fontBufferSize" );
mypLabel->setLabelField( QgsLabel::XCoordinate, "labelX" );
mypLabel->setLabelField( QgsLabel::YCoordinate, "labelY");
mypLabel->setLabelField( QgsLabel::XOffset, "labelXOffset");
mypLabel->setLabelField( QgsLabel::YOffset, "labelYOffset");
mypLabel->setLabelField( QgsLabel::Alignment, "labelAlignment" );
mypLabel->setLabelField( QgsLabel::Angle, "labelAngle");
*/
//lastly we enable labelling!
mypLayer->enableLabels(true);
// Add the Vector Layer to the Layer Registry
QgsMapLayerRegistry::instance()->addMapLayer(mypLayer, TRUE);
// Add the Layer to the Layer Set
myLayerSet.append(QgsMapCanvasLayer( mypLayer ) );
// set teh canvas to the extent of our layer
mpMapCanvas->setExtent(mypLayer->extent());
// Set the Map Canvas Layer Set
mpMapCanvas->setLayerSet(myLayerSet);
}
void QgsLabelDialog::apply()
{
QgsDebugMsg( "entering." );
//set the label props that are NOT bound to a field in the attributes tbl
//All of these are set in the labelAttributes member of the layer
QgsLabelAttributes * myLabelAttributes = mLabel->labelAttributes();
myLabelAttributes->setText( leDefaultLabel->text() );
myLabelAttributes->setFamily( mFont.family() );
int myTypeInt = cboFontSizeUnits->currentIndex() == 0 ? QgsLabelAttributes::PointUnits : QgsLabelAttributes::MapUnits;
myLabelAttributes->setSize( mFont.pointSizeF(), myTypeInt );
myLabelAttributes->setBold( mFont.bold() );
myLabelAttributes->setItalic( mFont.italic() );
myLabelAttributes->setUnderline( mFont.underline() );
myLabelAttributes->setStrikeOut( mFont.strikeOut() );
myLabelAttributes->setColor( mFontColor );
myTypeInt = cboOffsetUnits->currentIndex() == 0 ? QgsLabelAttributes::PointUnits : QgsLabelAttributes::MapUnits;
myLabelAttributes->setOffset( spinXOffset->value(), spinYOffset->value(), myTypeInt );
myLabelAttributes->setAutoAngle( spinAngle->value() == -1 );
myLabelAttributes->setAngle( spinAngle->value() );
//the values here may seem a bit counterintuitive - basically everything
//is the reverse of the way you think it should be...
//TODO investigate in QgsLabel why this needs to be the case
if ( radioAboveLeft->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignRight | Qt::AlignBottom );
if ( radioBelowLeft->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignRight | Qt::AlignTop );
if ( radioAboveRight->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignLeft | Qt::AlignBottom );
if ( radioBelowRight->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignLeft | Qt::AlignTop );
if ( radioLeft->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignRight | Qt::AlignVCenter );
if ( radioRight->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignLeft | Qt::AlignVCenter );
if ( radioAbove->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignBottom | Qt::AlignHCenter );
if ( radioBelow->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignTop | Qt::AlignHCenter );
if ( radioOver->isChecked() ) myLabelAttributes->setAlignment( Qt::AlignCenter );
myLabelAttributes->setMultilineEnabled( chkUseMultiline->isChecked() );
myLabelAttributes->setSelectedOnly( chkSelectedOnly->isChecked() );
myLabelAttributes->setBufferEnabled( chkUseBuffer->isChecked() );
myLabelAttributes->setBufferColor( mBufferColor );
myTypeInt = cboBufferSizeUnits->currentIndex() == 0 ? QgsLabelAttributes::PointUnits : QgsLabelAttributes::MapUnits;
myLabelAttributes->setBufferSize( spinBufferSize->value(), myTypeInt );
//TODO - transparency attributes for buffers
//set the label props that are data bound to a field in the attributes tbl
mLabel->setLabelField( QgsLabel::Text, fieldIndexFromName( cboLabelField->currentText() ) );
mLabel->setLabelField( QgsLabel::Family, fieldIndexFromName( cboFontField->currentText() ) );
mLabel->setLabelField( QgsLabel::Bold, fieldIndexFromName( cboBoldField->currentText() ) );
mLabel->setLabelField( QgsLabel::Italic, fieldIndexFromName( cboItalicField->currentText() ) );
mLabel->setLabelField( QgsLabel::Underline, fieldIndexFromName( cboUnderlineField->currentText() ) );
mLabel->setLabelField( QgsLabel::StrikeOut, fieldIndexFromName( cboStrikeOutField->currentText() ) );
mLabel->setLabelField( QgsLabel::Size, fieldIndexFromName( cboFontSizeField->currentText() ) );
mLabel->setLabelField( QgsLabel::SizeType, fieldIndexFromName( cboFontSizeTypeField->currentText() ) );
mLabel->setLabelField( QgsLabel::Color, fieldIndexFromName( cboFontColorField->currentText() ) );
mLabel->setLabelField( QgsLabel::BufferSize, fieldIndexFromName( cboBufferSizeField->currentText() ) );
//mLabel->setLabelField( QgsLabel::BufferTransparency, cboBufferTransparencyField->currentText() );
mLabel->setLabelField( QgsLabel::XCoordinate, fieldIndexFromName( cboXCoordinateField->currentText() ) );
mLabel->setLabelField( QgsLabel::YCoordinate, fieldIndexFromName( cboYCoordinateField->currentText() ) );
mLabel->setLabelField( QgsLabel::XOffset, fieldIndexFromName( cboXOffsetField->currentText() ) );
mLabel->setLabelField( QgsLabel::YOffset, fieldIndexFromName( cboYOffsetField->currentText() ) );
mLabel->setLabelField( QgsLabel::Alignment, fieldIndexFromName( cboAlignmentField->currentText() ) );
mLabel->setLabelField( QgsLabel::Angle, fieldIndexFromName( cboAngleField->currentText() ) );
// set up the scale based layer visibility stuff....
mLabel->setScaleBasedVisibility( chkUseScaleDependentRendering->isChecked() );
mLabel->setMinScale( leMinimumScale->text().toFloat() );
mLabel->setMaxScale( leMaximumScale->text().toFloat() );
}
