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qgspallabeling.cpp
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qgspallabeling.cpp
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/***************************************************************************
qgspallabeling.cpp
Smart labeling for vector layers
-------------------
begin : June 2009
copyright : (C) Martin Dobias
email : wonder dot sk at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgspallabeling.h"
#include <list>
#include <pal/pal.h>
#include <pal/feature.h>
#include <pal/layer.h>
#include <pal/palgeometry.h>
#include <pal/palexception.h>
#include <pal/problem.h>
#include <pal/labelposition.h>
#include <geos_c.h>
#include <cmath>
#include <QApplication>
#include <QByteArray>
#include <QString>
#include <QFontMetrics>
#include <QTime>
#include <QPainter>
#include "diagram/qgsdiagram.h"
#include "qgsdiagramrendererv2.h"
#include "qgslabelsearchtree.h"
#include "qgsexpression.h"
#include "qgsdatadefined.h"
#include <qgslogger.h>
#include <qgsvectorlayer.h>
#include <qgsmaplayerregistry.h>
#include <qgsvectordataprovider.h>
#include <qgsgeometry.h>
#include <qgsmaprenderer.h>
#include <qgsmarkersymbollayerv2.h>
#include <qgsproject.h>
#include "qgssymbolv2.h"
#include "qgssymbollayerv2utils.h"
#include <QMessageBox>
using namespace pal;
class QgsPalGeometry : public PalGeometry
{
public:
QgsPalGeometry( QgsFeatureId id, QString text, GEOSGeometry* g,
qreal ltrSpacing = 0.0, qreal wordSpacing = 0.0, bool curvedLabeling = false )
: mG( g )
, mText( text )
, mId( id )
, mInfo( NULL )
, mIsDiagram( false )
, mIsPinned( false )
, mFontMetrics( NULL )
, mLetterSpacing( ltrSpacing )
, mWordSpacing( wordSpacing )
, mCurvedLabeling( curvedLabeling )
{
mStrId = FID_TO_STRING( id ).toAscii();
mDefinedFont = QFont();
}
~QgsPalGeometry()
{
if ( mG )
GEOSGeom_destroy( mG );
delete mInfo;
delete mFontMetrics;
}
// getGeosGeometry + releaseGeosGeometry is called twice: once when adding, second time when labeling
GEOSGeometry* getGeosGeometry()
{
return mG;
}
void releaseGeosGeometry( GEOSGeometry* /*geom*/ )
{
// nothing here - we'll delete the geometry in destructor
}
const char* strId() { return mStrId.data(); }
QString text() { return mText; }
pal::LabelInfo* info( QFontMetricsF* fm, const QgsMapToPixel* xform, double fontScale, double maxinangle, double maxoutangle )
{
if ( mInfo )
return mInfo;
mFontMetrics = new QFontMetricsF( *fm ); // duplicate metrics for when drawing label
// max angle between curved label characters (20.0/-20.0 was default in QGIS <= 1.8)
if ( maxinangle < 20.0 )
maxinangle = 20.0;
if ( 60.0 < maxinangle )
maxinangle = 60.0;
if ( maxoutangle > -20.0 )
maxoutangle = -20.0;
if ( -95.0 > maxoutangle )
maxoutangle = -95.0;
// create label info!
QgsPoint ptZero = xform->toMapCoordinates( 0, 0 );
QgsPoint ptSize = xform->toMapCoordinatesF( 0.0, -fm->height() / fontScale );
// mLetterSpacing/mWordSpacing = 0.0 is default for non-curved labels
// (non-curved spacings handled by Qt in QgsPalLayerSettings/QgsPalLabeling)
qreal charWidth;
qreal wordSpaceFix;
mInfo = new pal::LabelInfo( mText.count(), ptSize.y() - ptZero.y(), maxinangle, maxoutangle );
for ( int i = 0; i < mText.count(); i++ )
{
mInfo->char_info[i].chr = mText[i].unicode();
// reconstruct how Qt creates word spacing, then adjust per individual stored character
// this will allow PAL to create each candidate width = character width + correct spacing
charWidth = fm->width( mText[i] );
if ( mCurvedLabeling )
{
wordSpaceFix = qreal( 0.0 );
if ( mText[i] == QString( " " )[0] )
{
// word spacing only gets added once at end of consecutive run of spaces, see QTextEngine::shapeText()
int nxt = i + 1;
wordSpaceFix = ( nxt < mText.count() && mText[nxt] != QString( " " )[0] ) ? mWordSpacing : qreal( 0.0 );
}
if ( fm->width( QString( mText[i] ) ) - fm->width( mText[i] ) - mLetterSpacing != qreal( 0.0 ) )
{
// word spacing applied when it shouldn't be
wordSpaceFix -= mWordSpacing;
}
charWidth = fm->width( QString( mText[i] ) ) + wordSpaceFix;
}
ptSize = xform->toMapCoordinatesF((( double ) charWidth ) / fontScale , 0.0 );
mInfo->char_info[i].width = ptSize.x() - ptZero.x();
}
return mInfo;
}
const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant >& dataDefinedValues() const { return mDataDefinedValues; }
void addDataDefinedValue( QgsPalLayerSettings::DataDefinedProperties p, QVariant v ) { mDataDefinedValues.insert( p, v ); }
void setIsDiagram( bool d ) { mIsDiagram = d; }
bool isDiagram() const { return mIsDiagram; }
void setIsPinned( bool f ) { mIsPinned = f; }
bool isPinned() const { return mIsPinned; }
void setDefinedFont( QFont f ) { mDefinedFont = QFont( f ); }
QFont definedFont() { return mDefinedFont; }
QFontMetricsF* getLabelFontMetrics() { return mFontMetrics; }
void setDiagramAttributes( const QgsAttributes& attrs ) { mDiagramAttributes = attrs; }
const QgsAttributes& diagramAttributes() { return mDiagramAttributes; }
protected:
GEOSGeometry* mG;
QString mText;
QByteArray mStrId;
QgsFeatureId mId;
LabelInfo* mInfo;
bool mIsDiagram;
bool mIsPinned;
QFont mDefinedFont;
QFontMetricsF* mFontMetrics;
qreal mLetterSpacing; // for use with curved labels
qreal mWordSpacing; // for use with curved labels
bool mCurvedLabeling; // whether the geometry is to be used for curved labeling placement
/**Stores attribute values for data defined properties*/
QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant > mDataDefinedValues;
/**Stores attribute values for diagram rendering*/
QgsAttributes mDiagramAttributes;
};
// -------------
QgsPalLayerSettings::QgsPalLayerSettings()
: palLayer( NULL )
, mCurFeat( 0 )
, mCurFields( 0 )
, ct( NULL )
, extentGeom( NULL )
, mFeaturesToLabel( 0 )
, mFeatsSendingToPal( 0 )
, mFeatsRegPal( 0 )
, expression( NULL )
{
enabled = false;
// text style
textFont = QApplication::font();
fontSizeInMapUnits = false;
textNamedStyle = QString( "" );
textColor = Qt::black;
textTransp = 0;
blendMode = QPainter::CompositionMode_SourceOver;
previewBkgrdColor = Qt::white;
// text formatting
wrapChar = "";
multilineHeight = 1.0;
multilineAlign = MultiLeft;
addDirectionSymbol = false;
leftDirectionSymbol = QString( "<" );
rightDirectionSymbol = QString( ">" );
reverseDirectionSymbol = false;
placeDirectionSymbol = SymbolLeftRight;
formatNumbers = false;
decimals = 3;
plusSign = false;
// text buffer
bufferDraw = false;
bufferSize = 1.0;
bufferSizeInMapUnits = false;
bufferColor = Qt::white;
bufferTransp = 0;
bufferNoFill = false;
bufferJoinStyle = Qt::BevelJoin;
bufferBlendMode = QPainter::CompositionMode_SourceOver;
// shape background
shapeDraw = false;
shapeType = ShapeRectangle;
shapeSVGFile = QString();
shapeSizeType = SizeBuffer;
shapeSize = QPointF( 0.0, 0.0 );
shapeSizeUnits = MM;
shapeRotationType = RotationSync;
shapeRotation = 0.0;
shapeOffset = QPointF( 0.0, 0.0 );
shapeOffsetUnits = MM;
shapeRadii = QPointF( 0.0, 0.0 );
shapeRadiiUnits = MM;
shapeFillColor = Qt::white;
shapeBorderColor = Qt::darkGray;
shapeBorderWidth = 0.0;
shapeBorderWidthUnits = MM;
shapeJoinStyle = Qt::BevelJoin;
shapeTransparency = 0;
shapeBlendMode = QPainter::CompositionMode_SourceOver;
// drop shadow
shadowDraw = false;
shadowUnder = ShadowLowest;
shadowOffsetAngle = 135;
shadowOffsetDist = 1.0;
shadowOffsetUnits = MM;
shadowOffsetGlobal = true;
shadowRadius = 1.5;
shadowRadiusUnits = MM;
shadowRadiusAlphaOnly = false;
shadowTransparency = 30;
shadowScale = 100;
shadowColor = Qt::black;
shadowBlendMode = QPainter::CompositionMode_Multiply;
// placement
placement = AroundPoint;
placementFlags = 0;
centroidWhole = false;
quadOffset = QuadrantOver;
xOffset = 0;
yOffset = 0;
labelOffsetInMapUnits = true;
dist = 0;
distInMapUnits = false;
angleOffset = 0;
preserveRotation = true;
maxCurvedCharAngleIn = 20.0;
maxCurvedCharAngleOut = -20.0;
priority = 5;
// rendering
scaleVisibility = false;
scaleMin = 1;
scaleMax = 10000000;
fontLimitPixelSize = false;
fontMinPixelSize = 0; //trigger to turn it on by default for map unit labels
fontMaxPixelSize = 10000;
displayAll = false;
upsidedownLabels = Upright;
labelPerPart = false;
mergeLines = false;
minFeatureSize = 0.0;
limitNumLabels = false;
maxNumLabels = 2000;
obstacle = true;
// scale factors
vectorScaleFactor = 1.0;
rasterCompressFactor = 1.0;
// data defined string and old-style index values
// NOTE: in QPair use -1 for second value (other values are for old-style layer properties migration)
// text style
mDataDefinedNames.insert( Size, QPair<QString, int>( "Size", 0 ) );
mDataDefinedNames.insert( Bold, QPair<QString, int>( "Bold", 1 ) );
mDataDefinedNames.insert( Italic, QPair<QString, int>( "Italic", 2 ) );
mDataDefinedNames.insert( Underline, QPair<QString, int>( "Underline", 3 ) );
mDataDefinedNames.insert( Color, QPair<QString, int>( "Color", 4 ) );
mDataDefinedNames.insert( Strikeout, QPair<QString, int>( "Strikeout", 5 ) );
mDataDefinedNames.insert( Family, QPair<QString, int>( "Family", 6 ) );
mDataDefinedNames.insert( FontStyle, QPair<QString, int>( "FontStyle", -1 ) );
mDataDefinedNames.insert( FontSizeUnit, QPair<QString, int>( "FontSizeUnit", -1 ) );
mDataDefinedNames.insert( FontTransp, QPair<QString, int>( "FontTransp", 18 ) );
mDataDefinedNames.insert( FontCase, QPair<QString, int>( "FontCase", -1 ) );
mDataDefinedNames.insert( FontLetterSpacing, QPair<QString, int>( "FontLetterSpacing", -1 ) );
mDataDefinedNames.insert( FontWordSpacing, QPair<QString, int>( "FontWordSpacing", -1 ) );
mDataDefinedNames.insert( FontBlendMode, QPair<QString, int>( "FontBlendMode", -1 ) );
// text formatting
mDataDefinedNames.insert( MultiLineWrapChar, QPair<QString, int>( "MultiLineWrapChar", -1 ) );
mDataDefinedNames.insert( MultiLineHeight, QPair<QString, int>( "MultiLineHeight", -1 ) );
mDataDefinedNames.insert( MultiLineAlignment, QPair<QString, int>( "MultiLineAlignment", -1 ) );
mDataDefinedNames.insert( DirSymbDraw, QPair<QString, int>( "DirSymbDraw", -1 ) );
mDataDefinedNames.insert( DirSymbLeft, QPair<QString, int>( "DirSymbLeft", -1 ) );
mDataDefinedNames.insert( DirSymbRight, QPair<QString, int>( "DirSymbRight", -1 ) );
mDataDefinedNames.insert( DirSymbPlacement, QPair<QString, int>( "DirSymbPlacement", -1 ) );
mDataDefinedNames.insert( DirSymbReverse, QPair<QString, int>( "DirSymbReverse", -1 ) );
mDataDefinedNames.insert( NumFormat, QPair<QString, int>( "NumFormat", -1 ) );
mDataDefinedNames.insert( NumDecimals, QPair<QString, int>( "NumDecimals", -1 ) );
mDataDefinedNames.insert( NumPlusSign, QPair<QString, int>( "NumPlusSign", -1 ) );
// text buffer
mDataDefinedNames.insert( BufferDraw, QPair<QString, int>( "BufferDraw", -1 ) );
mDataDefinedNames.insert( BufferSize, QPair<QString, int>( "BufferSize", 7 ) );
mDataDefinedNames.insert( BufferUnit, QPair<QString, int>( "BufferUnit", -1 ) );
mDataDefinedNames.insert( BufferColor, QPair<QString, int>( "BufferColor", 8 ) );
mDataDefinedNames.insert( BufferTransp, QPair<QString, int>( "BufferTransp", 19 ) );
mDataDefinedNames.insert( BufferJoinStyle, QPair<QString, int>( "BufferJoinStyle", -1 ) );
mDataDefinedNames.insert( BufferBlendMode, QPair<QString, int>( "BufferBlendMode", -1 ) );
// background
mDataDefinedNames.insert( ShapeDraw, QPair<QString, int>( "ShapeDraw", -1 ) );
mDataDefinedNames.insert( ShapeKind, QPair<QString, int>( "ShapeKind", -1 ) );
mDataDefinedNames.insert( ShapeSVGFile, QPair<QString, int>( "ShapeSVGFile", -1 ) );
mDataDefinedNames.insert( ShapeSizeType, QPair<QString, int>( "ShapeSizeType", -1 ) );
mDataDefinedNames.insert( ShapeSizeX, QPair<QString, int>( "ShapeSizeX", -1 ) );
mDataDefinedNames.insert( ShapeSizeY, QPair<QString, int>( "ShapeSizeY", -1 ) );
mDataDefinedNames.insert( ShapeSizeUnits, QPair<QString, int>( "ShapeSizeUnits", -1 ) );
mDataDefinedNames.insert( ShapeRotationType, QPair<QString, int>( "ShapeRotationType", -1 ) );
mDataDefinedNames.insert( ShapeRotation, QPair<QString, int>( "ShapeRotation", -1 ) );
mDataDefinedNames.insert( ShapeOffset, QPair<QString, int>( "ShapeOffset", -1 ) );
mDataDefinedNames.insert( ShapeOffsetUnits, QPair<QString, int>( "ShapeOffsetUnits", -1 ) );
mDataDefinedNames.insert( ShapeRadii, QPair<QString, int>( "ShapeRadii", -1 ) );
mDataDefinedNames.insert( ShapeRadiiUnits, QPair<QString, int>( "ShapeRadiiUnits", -1 ) );
mDataDefinedNames.insert( ShapeTransparency, QPair<QString, int>( "ShapeTransparency", -1 ) );
mDataDefinedNames.insert( ShapeBlendMode, QPair<QString, int>( "ShapeBlendMode", -1 ) );
mDataDefinedNames.insert( ShapeFillColor, QPair<QString, int>( "ShapeFillColor", -1 ) );
mDataDefinedNames.insert( ShapeBorderColor, QPair<QString, int>( "ShapeBorderColor", -1 ) );
mDataDefinedNames.insert( ShapeBorderWidth, QPair<QString, int>( "ShapeBorderWidth", -1 ) );
mDataDefinedNames.insert( ShapeBorderWidthUnits, QPair<QString, int>( "ShapeBorderWidthUnits", -1 ) );
mDataDefinedNames.insert( ShapeJoinStyle, QPair<QString, int>( "ShapeJoinStyle", -1 ) );
// drop shadow
mDataDefinedNames.insert( ShadowDraw, QPair<QString, int>( "ShadowDraw", -1 ) );
mDataDefinedNames.insert( ShadowUnder, QPair<QString, int>( "ShadowUnder", -1 ) );
mDataDefinedNames.insert( ShadowOffsetAngle, QPair<QString, int>( "ShadowOffsetAngle", -1 ) );
mDataDefinedNames.insert( ShadowOffsetDist, QPair<QString, int>( "ShadowOffsetDist", -1 ) );
mDataDefinedNames.insert( ShadowOffsetUnits, QPair<QString, int>( "ShadowOffsetUnits", -1 ) );
mDataDefinedNames.insert( ShadowRadius, QPair<QString, int>( "ShadowRadius", -1 ) );
mDataDefinedNames.insert( ShadowRadiusUnits, QPair<QString, int>( "ShadowRadiusUnits", -1 ) );
mDataDefinedNames.insert( ShadowTransparency, QPair<QString, int>( "ShadowTransparency", -1 ) );
mDataDefinedNames.insert( ShadowScale, QPair<QString, int>( "ShadowScale", -1 ) );
mDataDefinedNames.insert( ShadowColor, QPair<QString, int>( "ShadowColor", -1 ) );
mDataDefinedNames.insert( ShadowBlendMode, QPair<QString, int>( "ShadowBlendMode", -1 ) );
// placement
mDataDefinedNames.insert( CentroidWhole, QPair<QString, int>( "CentroidWhole", -1 ) );
mDataDefinedNames.insert( OffsetQuad, QPair<QString, int>( "OffsetQuad", -1 ) );
mDataDefinedNames.insert( OffsetXY, QPair<QString, int>( "OffsetXY", -1 ) );
mDataDefinedNames.insert( OffsetUnits, QPair<QString, int>( "OffsetUnits", -1 ) );
mDataDefinedNames.insert( LabelDistance, QPair<QString, int>( "LabelDistance", 13 ) );
mDataDefinedNames.insert( DistanceUnits, QPair<QString, int>( "DistanceUnits", -1 ) );
mDataDefinedNames.insert( OffsetRotation, QPair<QString, int>( "OffsetRotation", -1 ) );
mDataDefinedNames.insert( CurvedCharAngleInOut, QPair<QString, int>( "CurvedCharAngleInOut", -1 ) );
// (data defined only)
mDataDefinedNames.insert( PositionX, QPair<QString, int>( "PositionX", 9 ) );
mDataDefinedNames.insert( PositionY, QPair<QString, int>( "PositionY", 10 ) );
mDataDefinedNames.insert( Hali, QPair<QString, int>( "Hali", 11 ) );
mDataDefinedNames.insert( Vali, QPair<QString, int>( "Vali", 12 ) );
mDataDefinedNames.insert( Rotation, QPair<QString, int>( "Rotation", 14 ) );
//rendering
mDataDefinedNames.insert( ScaleVisibility, QPair<QString, int>( "ScaleVisibility", -1 ) );
mDataDefinedNames.insert( MinScale, QPair<QString, int>( "MinScale", 16 ) );
mDataDefinedNames.insert( MaxScale, QPair<QString, int>( "MaxScale", 17 ) );
mDataDefinedNames.insert( FontLimitPixel, QPair<QString, int>( "FontLimitPixel", -1 ) );
mDataDefinedNames.insert( FontMinPixel, QPair<QString, int>( "FontMinPixel", -1 ) );
mDataDefinedNames.insert( FontMaxPixel, QPair<QString, int>( "FontMaxPixel", -1 ) );
// (data defined only)
mDataDefinedNames.insert( Show, QPair<QString, int>( "Show", 15 ) );
mDataDefinedNames.insert( AlwaysShow, QPair<QString, int>( "AlwaysShow", 20 ) );
// temp stuff for when drawing label components (don't copy)
showingShadowRects = false;
}
QgsPalLayerSettings::QgsPalLayerSettings( const QgsPalLayerSettings& s )
{
// copy only permanent stuff
enabled = s.enabled;
// text style
fieldName = s.fieldName;
isExpression = s.isExpression;
textFont = s.textFont;
fontSizeInMapUnits = s.fontSizeInMapUnits;
textNamedStyle = s.textNamedStyle;
textColor = s.textColor;
textTransp = s.textTransp;
blendMode = s.blendMode;
previewBkgrdColor = s.previewBkgrdColor;
// text formatting
wrapChar = s.wrapChar;
multilineHeight = s.multilineHeight;
multilineAlign = s.multilineAlign;
addDirectionSymbol = s.addDirectionSymbol;
leftDirectionSymbol = s.leftDirectionSymbol;
rightDirectionSymbol = s.rightDirectionSymbol;
reverseDirectionSymbol = s.reverseDirectionSymbol;
placeDirectionSymbol = s.placeDirectionSymbol;
formatNumbers = s.formatNumbers;
decimals = s.decimals;
plusSign = s.plusSign;
// text buffer
bufferDraw = s.bufferDraw;
bufferSize = s.bufferSize;
bufferSizeInMapUnits = s.bufferSizeInMapUnits;
bufferColor = s.bufferColor;
bufferTransp = s.bufferTransp;
bufferNoFill = s.bufferNoFill;
bufferJoinStyle = s.bufferJoinStyle;
bufferBlendMode = s.bufferBlendMode;
// placement
placement = s.placement;
placementFlags = s.placementFlags;
centroidWhole = s.centroidWhole;
quadOffset = s.quadOffset;
xOffset = s.xOffset;
yOffset = s.yOffset;
labelOffsetInMapUnits = s.labelOffsetInMapUnits;
dist = s.dist;
distInMapUnits = s.distInMapUnits;
angleOffset = s.angleOffset;
preserveRotation = s.preserveRotation;
maxCurvedCharAngleIn = s.maxCurvedCharAngleIn;
maxCurvedCharAngleOut = s.maxCurvedCharAngleOut;
priority = s.priority;
// rendering
scaleVisibility = s.scaleVisibility;
scaleMin = s.scaleMin;
scaleMax = s.scaleMax;
fontLimitPixelSize = s.fontLimitPixelSize;
fontMinPixelSize = s.fontMinPixelSize;
fontMaxPixelSize = s.fontMaxPixelSize;
displayAll = s.displayAll;
upsidedownLabels = s.upsidedownLabels;
labelPerPart = s.labelPerPart;
mergeLines = s.mergeLines;
minFeatureSize = s.minFeatureSize;
limitNumLabels = s.limitNumLabels;
maxNumLabels = s.maxNumLabels;
obstacle = s.obstacle;
// shape background
shapeDraw = s.shapeDraw;
shapeType = s.shapeType;
shapeSVGFile = s.shapeSVGFile;
shapeSizeType = s.shapeSizeType;
shapeSize = s.shapeSize;
shapeSizeUnits = s.shapeSizeUnits;
shapeRotationType = s.shapeRotationType;
shapeRotation = s.shapeRotation;
shapeOffset = s.shapeOffset;
shapeOffsetUnits = s.shapeOffsetUnits;
shapeRadii = s.shapeRadii;
shapeRadiiUnits = s.shapeRadiiUnits;
shapeFillColor = s.shapeFillColor;
shapeBorderColor = s.shapeBorderColor;
shapeBorderWidth = s.shapeBorderWidth;
shapeBorderWidthUnits = s.shapeBorderWidthUnits;
shapeJoinStyle = s.shapeJoinStyle;
shapeTransparency = s.shapeTransparency;
shapeBlendMode = s.shapeBlendMode;
// drop shadow
shadowDraw = s.shadowDraw;
shadowUnder = s.shadowUnder;
shadowOffsetAngle = s.shadowOffsetAngle;
shadowOffsetDist = s.shadowOffsetDist;
shadowOffsetUnits = s.shadowOffsetUnits;
shadowOffsetGlobal = s.shadowOffsetGlobal;
shadowRadius = s.shadowRadius;
shadowRadiusUnits = s.shadowRadiusUnits;
shadowRadiusAlphaOnly = s.shadowRadiusAlphaOnly;
shadowTransparency = s.shadowTransparency;
shadowScale = s.shadowScale;
shadowColor = s.shadowColor;
shadowBlendMode = s.shadowBlendMode;
// data defined
dataDefinedProperties = s.dataDefinedProperties;
mDataDefinedNames = s.mDataDefinedNames;
// scale factors
vectorScaleFactor = s.vectorScaleFactor;
rasterCompressFactor = s.rasterCompressFactor;
ct = NULL;
extentGeom = NULL;
expression = NULL;
}
QgsPalLayerSettings::~QgsPalLayerSettings()
{
// pal layer is deleted internally in PAL
delete ct;
delete expression;
delete extentGeom;
// clear pointers to QgsDataDefined objects
dataDefinedProperties.clear();
}
QgsExpression* QgsPalLayerSettings::getLabelExpression()
{
if ( expression == NULL )
{
expression = new QgsExpression( fieldName );
}
return expression;
}
static QColor _readColor( QgsVectorLayer* layer, QString property, QColor defaultColor = Qt::black, bool withAlpha = true )
{
int r = layer->customProperty( property + "R", QVariant( defaultColor.red() ) ).toInt();
int g = layer->customProperty( property + "G", QVariant( defaultColor.green() ) ).toInt();
int b = layer->customProperty( property + "B", QVariant( defaultColor.blue() ) ).toInt();
int a = withAlpha ? layer->customProperty( property + "A", QVariant( defaultColor.alpha() ) ).toInt() : 255;
return QColor( r, g, b, a );
}
static void _writeColor( QgsVectorLayer* layer, QString property, QColor color, bool withAlpha = true )
{
layer->setCustomProperty( property + "R", color.red() );
layer->setCustomProperty( property + "G", color.green() );
layer->setCustomProperty( property + "B", color.blue() );
if ( withAlpha )
layer->setCustomProperty( property + "A", color.alpha() );
}
static QgsPalLayerSettings::SizeUnit _decodeUnits( const QString& str )
{
if ( str.compare( "Point", Qt::CaseInsensitive ) == 0
|| str.compare( "Points", Qt::CaseInsensitive ) == 0 ) return QgsPalLayerSettings::Points;
if ( str.compare( "MapUnit", Qt::CaseInsensitive ) == 0
|| str.compare( "MapUnits", Qt::CaseInsensitive ) == 0 ) return QgsPalLayerSettings::MapUnits;
if ( str.compare( "Percent", Qt::CaseInsensitive ) == 0 ) return QgsPalLayerSettings::Percent;
return QgsPalLayerSettings::MM; // "MM"
}
static QPainter::CompositionMode _decodeBlendMode( const QString& str )
{
if ( str.compare( "Lighten", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Lighten;
if ( str.compare( "Screen", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Screen;
if ( str.compare( "Dodge", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_ColorDodge;
if ( str.compare( "Addition", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Plus;
if ( str.compare( "Darken", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Darken;
if ( str.compare( "Multiply", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Multiply;
if ( str.compare( "Burn", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_ColorBurn;
if ( str.compare( "Overlay", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Overlay;
if ( str.compare( "SoftLight", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_SoftLight;
if ( str.compare( "HardLight", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_HardLight;
if ( str.compare( "Difference", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Difference;
if ( str.compare( "Subtract", Qt::CaseInsensitive ) == 0 ) return QPainter::CompositionMode_Exclusion;
return QPainter::CompositionMode_SourceOver; // "Normal"
}
static Qt::PenJoinStyle _decodePenJoinStyle( const QString& str )
{
if ( str.compare( "Miter", Qt::CaseInsensitive ) == 0 ) return Qt::MiterJoin;
if ( str.compare( "Round", Qt::CaseInsensitive ) == 0 ) return Qt::RoundJoin;
return Qt::BevelJoin; // "Bevel"
}
void QgsPalLayerSettings::readDataDefinedPropertyMap( QgsVectorLayer* layer,
QMap < QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* > & propertyMap )
{
if ( !layer )
{
return;
}
QMapIterator<QgsPalLayerSettings::DataDefinedProperties, QPair<QString, int> > i( mDataDefinedNames );
while ( i.hasNext() )
{
i.next();
readDataDefinedProperty( layer, i.key(), propertyMap );
}
}
void QgsPalLayerSettings::writeDataDefinedPropertyMap( QgsVectorLayer* layer,
const QMap < QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* > & propertyMap )
{
if ( !layer )
{
return;
}
QMapIterator<QgsPalLayerSettings::DataDefinedProperties, QPair<QString, int> > i( mDataDefinedNames );
while ( i.hasNext() )
{
i.next();
QString newPropertyName = "labeling/dataDefined/" + i.value().first;
QVariant propertyValue = QVariant();
QMap< QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* >::const_iterator it = propertyMap.find( i.key() );
if ( it != propertyMap.constEnd() )
{
QgsDataDefined* dd = it.value();
if ( dd )
{
bool active = dd->isActive();
bool useExpr = dd->useExpression();
QString expr = dd->expressionString();
QString field = dd->field();
bool defaultVals = ( !active && !useExpr && expr.isEmpty() && field.isEmpty() );
if ( !defaultVals )
{
// TODO: update this when project settings for labeling are migrated to better XML layout
QStringList values;
values << ( active ? "1" : "0" );
values << ( useExpr ? "1" : "0" );
values << expr;
values << field;
if ( !values.isEmpty() )
{
propertyValue = QVariant( values.join( "~~" ) );
}
}
}
}
if ( propertyValue.isValid() )
{
layer->setCustomProperty( newPropertyName, propertyValue );
}
else
{
// remove unused properties
layer->removeCustomProperty( newPropertyName );
}
if ( layer->customProperty( newPropertyName, QVariant() ).isValid() && i.value().second > -1 )
{
// remove old-style field index-based property, if still present
layer->removeCustomProperty( QString( "labeling/dataDefinedProperty" ) + QString::number( i.value().second ) );
}
}
}
void QgsPalLayerSettings::readDataDefinedProperty( QgsVectorLayer* layer,
QgsPalLayerSettings::DataDefinedProperties p,
QMap < QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* > & propertyMap )
{
QString newPropertyName = "labeling/dataDefined/" + mDataDefinedNames.value( p ).first;
QVariant newPropertyField = layer->customProperty( newPropertyName, QVariant() );
QString ddString = QString();
if ( newPropertyField.isValid() )
{
ddString = newPropertyField.toString();
}
else // maybe working with old-style field index-based property (< QGIS 2.0)
{
int oldIndx = mDataDefinedNames.value( p ).second;
if ( oldIndx < 0 ) // something went wrong and we are working with new-style
{
return;
}
QString oldPropertyName = "labeling/dataDefinedProperty" + QString::number( oldIndx );
QVariant oldPropertyField = layer->customProperty( oldPropertyName, QVariant() );
if ( !oldPropertyField.isValid() )
{
return;
}
// switch from old-style field index- to name-based properties
bool conversionOk;
int indx = oldPropertyField.toInt( &conversionOk );
if ( conversionOk )
{
// Fix to migrate from old-style vector api, where returned QMap keys possibly
// had 'holes' in sequence of field indices, e.g. 0,2,3
// QgsAttrPalIndexNameHash provides a means of access field name in sequences from
// providers that procuded holes (e.g. PostGIS skipped geom column), otherwise it is empty
QgsAttrPalIndexNameHash oldIndicesToNames = layer->dataProvider()->palAttributeIndexNames();
if ( !oldIndicesToNames.isEmpty() )
{
ddString = oldIndicesToNames.value( indx );
}
else
{
QgsFields fields = layer->dataProvider()->fields();
if ( indx < fields.size() ) // in case field count has changed
{
ddString = fields.at( indx ).name();
}
}
}
if ( !ddString.isEmpty() )
{
//upgrade any existing property to field name-based
layer->setCustomProperty( newPropertyName, QVariant( updateDataDefinedString( ddString ) ) );
// fix for buffer drawing triggered off of just its data defined size in the past (<2.0)
if ( oldIndx == 7 ) // old bufferSize enum
{
bufferDraw = true;
layer->setCustomProperty( "labeling/bufferDraw", true );
}
}
// remove old-style field index-based property
layer->removeCustomProperty( oldPropertyName );
}
if ( !ddString.isEmpty() && ddString != QString( "0~~0~~~~" ) )
{
// TODO: update this when project settings for labeling are migrated to better XML layout
QString newStyleString = updateDataDefinedString( ddString );
QStringList ddv = newStyleString.split( "~~" );
QgsDataDefined* dd = new QgsDataDefined( ddv.at( 0 ).toInt(), ddv.at( 1 ).toInt(), ddv.at( 2 ), ddv.at( 3 ) );
propertyMap.insert( p, dd );
}
else
{
// remove unused properties
layer->removeCustomProperty( newPropertyName );
}
}
void QgsPalLayerSettings::updateFontViaStyle( QFont& font, const QString & fontstyle )
{
if ( !fontstyle.isEmpty() )
{
QFont styledfont = mFontDB.font( font.family(), fontstyle, 12 );
if ( QApplication::font().toString() != styledfont.toString() )
{
if ( font.pointSizeF() != -1 )
{
styledfont.setPointSizeF( font.pointSizeF() );
}
else if ( font.pixelSize() != -1 )
{
styledfont.setPixelSize( font.pixelSize() );
}
font = styledfont;
}
}
}
void QgsPalLayerSettings::readFromLayer( QgsVectorLayer* layer )
{
if ( layer->customProperty( "labeling" ).toString() != QString( "pal" ) )
return; // there's no information available
// NOTE: set defaults for newly added properties, for backwards compatibility
enabled = layer->customProperty( "labeling/enabled" ).toBool();
// text style
fieldName = layer->customProperty( "labeling/fieldName" ).toString();
isExpression = layer->customProperty( "labeling/isExpression" ).toBool();
QString fontFamily = layer->customProperty( "labeling/fontFamily", QVariant( QApplication::font().family() ) ).toString();
double fontSize = layer->customProperty( "labeling/fontSize" ).toDouble();
fontSizeInMapUnits = layer->customProperty( "labeling/fontSizeInMapUnits" ).toBool();
int fontWeight = layer->customProperty( "labeling/fontWeight" ).toInt();
bool fontItalic = layer->customProperty( "labeling/fontItalic" ).toBool();
textFont = QFont( fontFamily, fontSize, fontWeight, fontItalic );
textFont.setPointSizeF( fontSize ); //double precision needed because of map units
textNamedStyle = layer->customProperty( "labeling/namedStyle", QVariant( "" ) ).toString();
updateFontViaStyle( textFont, textNamedStyle ); // must come after textFont.setPointSizeF()
textFont.setCapitalization(( QFont::Capitalization )layer->customProperty( "labeling/fontCapitals", QVariant( 0 ) ).toUInt() );
textFont.setUnderline( layer->customProperty( "labeling/fontUnderline" ).toBool() );
textFont.setStrikeOut( layer->customProperty( "labeling/fontStrikeout" ).toBool() );
textFont.setLetterSpacing( QFont::AbsoluteSpacing, layer->customProperty( "labeling/fontLetterSpacing", QVariant( 0.0 ) ).toDouble() );
textFont.setWordSpacing( layer->customProperty( "labeling/fontWordSpacing", QVariant( 0.0 ) ).toDouble() );
textColor = _readColor( layer, "labeling/textColor", Qt::black, false );
textTransp = layer->customProperty( "labeling/textTransp" ).toInt();
blendMode = QgsMapRenderer::getCompositionMode(
( QgsMapRenderer::BlendMode )layer->customProperty( "labeling/blendMode", QVariant( QgsMapRenderer::BlendNormal ) ).toUInt() );
previewBkgrdColor = QColor( layer->customProperty( "labeling/previewBkgrdColor", QVariant( "#ffffff" ) ).toString() );
// text formatting
wrapChar = layer->customProperty( "labeling/wrapChar" ).toString();
multilineHeight = layer->customProperty( "labeling/multilineHeight", QVariant( 1.0 ) ).toDouble();
multilineAlign = ( MultiLineAlign )layer->customProperty( "labeling/multilineAlign", QVariant( MultiLeft ) ).toUInt();
addDirectionSymbol = layer->customProperty( "labeling/addDirectionSymbol" ).toBool();
leftDirectionSymbol = layer->customProperty( "labeling/leftDirectionSymbol", QVariant( "<" ) ).toString();
rightDirectionSymbol = layer->customProperty( "labeling/rightDirectionSymbol", QVariant( ">" ) ).toString();
reverseDirectionSymbol = layer->customProperty( "labeling/reverseDirectionSymbol" ).toBool();
placeDirectionSymbol = ( DirectionSymbols )layer->customProperty( "labeling/placeDirectionSymbol", QVariant( SymbolLeftRight ) ).toUInt();
formatNumbers = layer->customProperty( "labeling/formatNumbers" ).toBool();
decimals = layer->customProperty( "labeling/decimals" ).toInt();
plusSign = layer->customProperty( "labeling/plussign" ).toInt();
// text buffer
double bufSize = layer->customProperty( "labeling/bufferSize", QVariant( 0.0 ) ).toDouble();
// fix for buffer being keyed off of just its size in the past
QVariant drawBuffer = layer->customProperty( "labeling/bufferDraw", QVariant() );
if ( drawBuffer.isValid() )
{
bufferDraw = drawBuffer.toBool();
bufferSize = bufSize;
}
else if ( bufSize != 0.0 )
{
bufferDraw = true;
bufferSize = bufSize;
}
else
{
// keep bufferSize at new 1.0 default
bufferDraw = false;
}
bufferSizeInMapUnits = layer->customProperty( "labeling/bufferSizeInMapUnits" ).toBool();
bufferColor = _readColor( layer, "labeling/bufferColor", Qt::white, false );
bufferTransp = layer->customProperty( "labeling/bufferTransp" ).toInt();
bufferBlendMode = QgsMapRenderer::getCompositionMode(
( QgsMapRenderer::BlendMode )layer->customProperty( "labeling/bufferBlendMode", QVariant( QgsMapRenderer::BlendNormal ) ).toUInt() );
bufferJoinStyle = ( Qt::PenJoinStyle )layer->customProperty( "labeling/bufferJoinStyle", QVariant( Qt::BevelJoin ) ).toUInt();
bufferNoFill = layer->customProperty( "labeling/bufferNoFill", QVariant( false ) ).toBool();
// background
shapeDraw = layer->customProperty( "labeling/shapeDraw", QVariant( false ) ).toBool();
shapeType = ( ShapeType )layer->customProperty( "labeling/shapeType", QVariant( ShapeRectangle ) ).toUInt();
shapeSVGFile = layer->customProperty( "labeling/shapeSVGFile", QVariant( "" ) ).toString();
shapeSizeType = ( SizeType )layer->customProperty( "labeling/shapeSizeType", QVariant( SizeBuffer ) ).toUInt();
shapeSize = QPointF( layer->customProperty( "labeling/shapeSizeX", QVariant( 0.0 ) ).toDouble(),
layer->customProperty( "labeling/shapeSizeY", QVariant( 0.0 ) ).toDouble() );
shapeSizeUnits = ( SizeUnit )layer->customProperty( "labeling/shapeSizeUnits", QVariant( MM ) ).toUInt();
shapeRotationType = ( RotationType )layer->customProperty( "labeling/shapeRotationType", QVariant( RotationSync ) ).toUInt();
shapeRotation = layer->customProperty( "labeling/shapeRotation", QVariant( 0.0 ) ).toDouble();
shapeOffset = QPointF( layer->customProperty( "labeling/shapeOffsetX", QVariant( 0.0 ) ).toDouble(),
layer->customProperty( "labeling/shapeOffsetY", QVariant( 0.0 ) ).toDouble() );
shapeOffsetUnits = ( SizeUnit )layer->customProperty( "labeling/shapeOffsetUnits", QVariant( MM ) ).toUInt();
shapeRadii = QPointF( layer->customProperty( "labeling/shapeRadiiX", QVariant( 0.0 ) ).toDouble(),
layer->customProperty( "labeling/shapeRadiiY", QVariant( 0.0 ) ).toDouble() );
shapeRadiiUnits = ( SizeUnit )layer->customProperty( "labeling/shapeRadiiUnits", QVariant( MM ) ).toUInt();
shapeFillColor = _readColor( layer, "labeling/shapeFillColor", Qt::white, true );
shapeBorderColor = _readColor( layer, "labeling/shapeBorderColor", Qt::darkGray, true );
shapeBorderWidth = layer->customProperty( "labeling/shapeBorderWidth", QVariant( .0 ) ).toDouble();
shapeBorderWidthUnits = ( SizeUnit )layer->customProperty( "labeling/shapeBorderWidthUnits", QVariant( MM ) ).toUInt();
shapeJoinStyle = ( Qt::PenJoinStyle )layer->customProperty( "labeling/shapeJoinStyle", QVariant( Qt::BevelJoin ) ).toUInt();
shapeTransparency = layer->customProperty( "labeling/shapeTransparency", QVariant( 0 ) ).toInt();
shapeBlendMode = QgsMapRenderer::getCompositionMode(
( QgsMapRenderer::BlendMode )layer->customProperty( "labeling/shapeBlendMode", QVariant( QgsMapRenderer::BlendNormal ) ).toUInt() );
// drop shadow
shadowDraw = layer->customProperty( "labeling/shadowDraw", QVariant( false ) ).toBool();
shadowUnder = ( ShadowType )layer->customProperty( "labeling/shadowUnder", QVariant( ShadowLowest ) ).toUInt();//ShadowLowest;
shadowOffsetAngle = layer->customProperty( "labeling/shadowOffsetAngle", QVariant( 135 ) ).toInt();
shadowOffsetDist = layer->customProperty( "labeling/shadowOffsetDist", QVariant( 1.0 ) ).toDouble();
shadowOffsetUnits = ( SizeUnit )layer->customProperty( "labeling/shadowOffsetUnits", QVariant( MM ) ).toUInt();
shadowOffsetGlobal = layer->customProperty( "labeling/shadowOffsetGlobal", QVariant( true ) ).toBool();
shadowRadius = layer->customProperty( "labeling/shadowRadius", QVariant( 1.5 ) ).toDouble();
shadowRadiusUnits = ( SizeUnit )layer->customProperty( "labeling/shadowRadiusUnits", QVariant( MM ) ).toUInt();
shadowRadiusAlphaOnly = layer->customProperty( "labeling/shadowRadiusAlphaOnly", QVariant( false ) ).toBool();
shadowTransparency = layer->customProperty( "labeling/shadowTransparency", QVariant( 30 ) ).toInt();
shadowScale = layer->customProperty( "labeling/shadowScale", QVariant( 100 ) ).toInt();
shadowColor = _readColor( layer, "labeling/shadowColor", Qt::black, false );
shadowBlendMode = QgsMapRenderer::getCompositionMode(
( QgsMapRenderer::BlendMode )layer->customProperty( "labeling/shadowBlendMode", QVariant( QgsMapRenderer::BlendMultiply ) ).toUInt() );
// placement
placement = ( Placement )layer->customProperty( "labeling/placement" ).toInt();
placementFlags = layer->customProperty( "labeling/placementFlags" ).toUInt();
centroidWhole = layer->customProperty( "labeling/centroidWhole", QVariant( false ) ).toBool();
dist = layer->customProperty( "labeling/dist" ).toDouble();
distInMapUnits = layer->customProperty( "labeling/distInMapUnits" ).toBool();
quadOffset = ( QuadrantPosition )layer->customProperty( "labeling/quadOffset", QVariant( QuadrantOver ) ).toUInt();
xOffset = layer->customProperty( "labeling/xOffset", QVariant( 0.0 ) ).toDouble();
yOffset = layer->customProperty( "labeling/yOffset", QVariant( 0.0 ) ).toDouble();
labelOffsetInMapUnits = layer->customProperty( "labeling/labelOffsetInMapUnits", QVariant( true ) ).toBool();
angleOffset = layer->customProperty( "labeling/angleOffset", QVariant( 0.0 ) ).toDouble();
preserveRotation = layer->customProperty( "labeling/preserveRotation", QVariant( true ) ).toBool();
maxCurvedCharAngleIn = layer->customProperty( "labeling/maxCurvedCharAngleIn", QVariant( 20.0 ) ).toDouble();
maxCurvedCharAngleOut = layer->customProperty( "labeling/maxCurvedCharAngleOut", QVariant( -20.0 ) ).toDouble();
priority = layer->customProperty( "labeling/priority" ).toInt();
// rendering
scaleVisibility = layer->customProperty( "labeling/scaleVisibility" ).toBool();
scaleMin = layer->customProperty( "labeling/scaleMin", QVariant( 1 ) ).toInt();
scaleMax = layer->customProperty( "labeling/scaleMax", QVariant( 10000000 ) ).toInt();
fontLimitPixelSize = layer->customProperty( "labeling/fontLimitPixelSize", QVariant( false ) ).toBool();
fontMinPixelSize = layer->customProperty( "labeling/fontMinPixelSize", QVariant( 0 ) ).toInt();
fontMaxPixelSize = layer->customProperty( "labeling/fontMaxPixelSize", QVariant( 10000 ) ).toInt();
displayAll = layer->customProperty( "labeling/displayAll", QVariant( false ) ).toBool();
upsidedownLabels = ( UpsideDownLabels )layer->customProperty( "labeling/upsidedownLabels", QVariant( Upright ) ).toUInt();
labelPerPart = layer->customProperty( "labeling/labelPerPart" ).toBool();
mergeLines = layer->customProperty( "labeling/mergeLines" ).toBool();
minFeatureSize = layer->customProperty( "labeling/minFeatureSize" ).toDouble();
limitNumLabels = layer->customProperty( "labeling/limitNumLabels", QVariant( false ) ).toBool();
maxNumLabels = layer->customProperty( "labeling/maxNumLabels", QVariant( 2000 ) ).toInt();
obstacle = layer->customProperty( "labeling/obstacle", QVariant( true ) ).toBool();
readDataDefinedPropertyMap( layer, dataDefinedProperties );
}
void QgsPalLayerSettings::writeToLayer( QgsVectorLayer* layer )
{
// this is a mark that labeling information is present
layer->setCustomProperty( "labeling", "pal" );
layer->setCustomProperty( "labeling/enabled", enabled );
// text style
layer->setCustomProperty( "labeling/fieldName", fieldName );
layer->setCustomProperty( "labeling/isExpression", isExpression );
layer->setCustomProperty( "labeling/fontFamily", textFont.family() );
layer->setCustomProperty( "labeling/namedStyle", textNamedStyle );
layer->setCustomProperty( "labeling/fontSize", textFont.pointSizeF() );
layer->setCustomProperty( "labeling/fontSizeInMapUnits", fontSizeInMapUnits );
layer->setCustomProperty( "labeling/fontWeight", textFont.weight() );
layer->setCustomProperty( "labeling/fontItalic", textFont.italic() );
layer->setCustomProperty( "labeling/fontBold", textFont.bold() );
layer->setCustomProperty( "labeling/fontStrikeout", textFont.strikeOut() );
layer->setCustomProperty( "labeling/fontUnderline", textFont.underline() );
_writeColor( layer, "labeling/textColor", textColor );
layer->setCustomProperty( "labeling/fontCapitals", ( unsigned int )textFont.capitalization() );
layer->setCustomProperty( "labeling/fontLetterSpacing", textFont.letterSpacing() );
layer->setCustomProperty( "labeling/fontWordSpacing", textFont.wordSpacing() );
layer->setCustomProperty( "labeling/textTransp", textTransp );
layer->setCustomProperty( "labeling/blendMode", QgsMapRenderer::getBlendModeEnum( blendMode ) );
layer->setCustomProperty( "labeling/previewBkgrdColor", previewBkgrdColor.name() );
// text formatting
layer->setCustomProperty( "labeling/wrapChar", wrapChar );
layer->setCustomProperty( "labeling/multilineHeight", multilineHeight );
layer->setCustomProperty( "labeling/multilineAlign", ( unsigned int )multilineAlign );
layer->setCustomProperty( "labeling/addDirectionSymbol", addDirectionSymbol );
layer->setCustomProperty( "labeling/leftDirectionSymbol", leftDirectionSymbol );
layer->setCustomProperty( "labeling/rightDirectionSymbol", rightDirectionSymbol );
layer->setCustomProperty( "labeling/reverseDirectionSymbol", reverseDirectionSymbol );
layer->setCustomProperty( "labeling/placeDirectionSymbol", ( unsigned int )placeDirectionSymbol );
layer->setCustomProperty( "labeling/formatNumbers", formatNumbers );
layer->setCustomProperty( "labeling/decimals", decimals );
layer->setCustomProperty( "labeling/plussign", plusSign );
// text buffer
layer->setCustomProperty( "labeling/bufferDraw", bufferDraw );