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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 "qgstextlabelfeature.h"
#include "qgsunittypes.h"
#include <list>
#include <pal/pal.h>
#include <pal/feature.h>
#include <pal/layer.h>
#include <pal/palexception.h>
#include <pal/problem.h>
#include <pal/labelposition.h>
#include <cmath>
#include <QApplication>
#include <QByteArray>
#include <QString>
#include <QFontMetrics>
#include <QTime>
#include <QPainter>
#include "diagram/qgsdiagram.h"
#include "qgsdiagramrendererv2.h"
#include "qgsfontutils.h"
#include "qgslabelsearchtree.h"
#include "qgsexpression.h"
#include "qgsdatadefined.h"
#include "qgslabelingenginev2.h"
#include "qgsvectorlayerlabeling.h"
#include <qgslogger.h>
#include <qgsvectorlayer.h>
#include <qgsmaplayerregistry.h>
#include <qgsvectordataprovider.h>
#include <qgsvectorlayerdiagramprovider.h>
#include <qgsvectorlayerlabelprovider.h>
#include <qgsgeometry.h>
#include <qgsmaprenderer.h>
#include <qgsmarkersymbollayerv2.h>
#include <qgsproject.h>
#include "qgssymbolv2.h"
#include "qgssymbollayerv2utils.h"
#include "qgsmaptopixelgeometrysimplifier.h"
#include <QMessageBox>
Q_GUI_EXPORT extern int qt_defaultDpiX();
Q_GUI_EXPORT extern int qt_defaultDpiY();
static void _fixQPictureDPI( QPainter* p )
{
// QPicture makes an assumption that we drawing to it with system DPI.
// Then when being drawn, it scales the painter. The following call
// negates the effect. There is no way of setting QPicture's DPI.
// See QTBUG-20361
p->scale( static_cast< double >( qt_defaultDpiX() ) / p->device()->logicalDpiX(),
static_cast< double >( qt_defaultDpiY() ) / p->device()->logicalDpiY() );
}
using namespace pal;
// -------------
/* ND: Default point label position priority. These are set to match variants of the ideal placement priority described
in "Making Maps", Krygier & Wood (2011) (p216),
"Elements of Cartography", Robinson et al (1995)
and "Designing Better Maps", Brewer (2005) (p76)
Note that while they agree on positions 1-4, 5-8 are more contentious so I've selected these placements
based on my preferences, and to follow Krygier and Wood's placements more closer. (I'm not going to disagree
with Denis Wood on anything cartography related...!)
*/
QVector< QgsPalLayerSettings::PredefinedPointPosition > QgsPalLayerSettings::DEFAULT_PLACEMENT_ORDER = QVector< QgsPalLayerSettings::PredefinedPointPosition >()
<< QgsPalLayerSettings::TopRight
<< QgsPalLayerSettings::TopLeft
<< QgsPalLayerSettings::BottomRight
<< QgsPalLayerSettings::BottomLeft
<< QgsPalLayerSettings::MiddleRight
<< QgsPalLayerSettings::MiddleLeft
<< QgsPalLayerSettings::TopSlightlyRight
<< QgsPalLayerSettings::BottomSlightlyRight;
//debugging only - don't use these placements by default
/* << QgsPalLayerSettings::TopSlightlyLeft
<< QgsPalLayerSettings::BottomSlightlyLeft;
<< QgsPalLayerSettings::TopMiddle
<< QgsPalLayerSettings::BottomMiddle;*/
QgsPalLayerSettings::QgsPalLayerSettings()
: upsidedownLabels( Upright )
, mCurFeat( nullptr )
, xform( nullptr )
, ct( nullptr )
, extentGeom( nullptr )
, mFeaturesToLabel( 0 )
, mFeatsSendingToPal( 0 )
, mFeatsRegPal( 0 )
, expression( nullptr )
{
enabled = false;
drawLabels = true;
isExpression = false;
fieldIndex = 0;
// text style
textFont = QApplication::font();
fontSizeInMapUnits = false;
textColor = Qt::black;
textTransp = 0;
blendMode = QPainter::CompositionMode_SourceOver;
previewBkgrdColor = Qt::white;
// font processing info
mTextFontFound = true;
mTextFontFamily = QApplication::font().family();
// text formatting
wrapChar = "";
multilineHeight = 1.0;
multilineAlign = MultiFollowPlacement;
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 = AboveLine | MapOrientation;
centroidWhole = false;
centroidInside = false;
predefinedPositionOrder = DEFAULT_PLACEMENT_ORDER;
fitInPolygonOnly = false;
quadOffset = QuadrantOver;
xOffset = 0;
yOffset = 0;
labelOffsetInMapUnits = true;
dist = 0;
distInMapUnits = false;
offsetType = FromPoint;
angleOffset = 0;
preserveRotation = true;
maxCurvedCharAngleIn = 25.0;
maxCurvedCharAngleOut = -25.0;
priority = 5;
repeatDistance = 0;
repeatDistanceUnit = MM;
// 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;
obstacleFactor = 1.0;
obstacleType = PolygonInterior;
zIndex = 0.0;
// 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 ) );
mDataDefinedNames.insert( RepeatDistance, QPair<QString, int>( "RepeatDistance", -1 ) );
mDataDefinedNames.insert( RepeatDistanceUnit, QPair<QString, int>( "RepeatDistanceUnit", -1 ) );
mDataDefinedNames.insert( Priority, QPair<QString, int>( "Priority", -1 ) );
mDataDefinedNames.insert( IsObstacle, QPair<QString, int>( "IsObstacle", -1 ) );
mDataDefinedNames.insert( ObstacleFactor, QPair<QString, int>( "ObstacleFactor", -1 ) );
mDataDefinedNames.insert( PredefinedPositionOrder, QPair<QString, int>( "PredefinedPositionOrder", -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 ) );
mDataDefinedNames.insert( ZIndex, QPair<QString, int>( "ZIndex", -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 )
: mCurFeat( nullptr )
, fieldIndex( 0 )
, xform( nullptr )
, ct( nullptr )
, extentGeom( nullptr )
, mFeaturesToLabel( 0 )
, mFeatsSendingToPal( 0 )
, mFeatsRegPal( 0 )
, showingShadowRects( false )
, expression( nullptr )
{
*this = s;
}
QgsPalLayerSettings& QgsPalLayerSettings::operator=( const QgsPalLayerSettings & s )
{
if ( this == &s )
return *this;
// copy only permanent stuff
enabled = s.enabled;
drawLabels = s.drawLabels;
// text style
fieldName = s.fieldName;
isExpression = s.isExpression;
textFont = s.textFont;
textNamedStyle = s.textNamedStyle;
fontSizeInMapUnits = s.fontSizeInMapUnits;
fontSizeMapUnitScale = s.fontSizeMapUnitScale;
textColor = s.textColor;
textTransp = s.textTransp;
blendMode = s.blendMode;
previewBkgrdColor = s.previewBkgrdColor;
// font processing info
mTextFontFound = s.mTextFontFound;
mTextFontFamily = s.mTextFontFamily;
// 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;
bufferSizeMapUnitScale = s.bufferSizeMapUnitScale;
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;
centroidInside = s.centroidInside;
predefinedPositionOrder = s.predefinedPositionOrder;
fitInPolygonOnly = s.fitInPolygonOnly;
quadOffset = s.quadOffset;
xOffset = s.xOffset;
yOffset = s.yOffset;
labelOffsetInMapUnits = s.labelOffsetInMapUnits;
labelOffsetMapUnitScale = s.labelOffsetMapUnitScale;
dist = s.dist;
offsetType = s.offsetType;
distInMapUnits = s.distInMapUnits;
distMapUnitScale = s.distMapUnitScale;
angleOffset = s.angleOffset;
preserveRotation = s.preserveRotation;
maxCurvedCharAngleIn = s.maxCurvedCharAngleIn;
maxCurvedCharAngleOut = s.maxCurvedCharAngleOut;
priority = s.priority;
repeatDistance = s.repeatDistance;
repeatDistanceUnit = s.repeatDistanceUnit;
repeatDistanceMapUnitScale = s.repeatDistanceMapUnitScale;
// 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;
obstacleFactor = s.obstacleFactor;
obstacleType = s.obstacleType;
zIndex = s.zIndex;
// shape background
shapeDraw = s.shapeDraw;
shapeType = s.shapeType;
shapeSVGFile = s.shapeSVGFile;
shapeSizeType = s.shapeSizeType;
shapeSize = s.shapeSize;
shapeSizeUnits = s.shapeSizeUnits;
shapeSizeMapUnitScale = s.shapeSizeMapUnitScale;
shapeRotationType = s.shapeRotationType;
shapeRotation = s.shapeRotation;
shapeOffset = s.shapeOffset;
shapeOffsetUnits = s.shapeOffsetUnits;
shapeOffsetMapUnitScale = s.shapeOffsetMapUnitScale;
shapeRadii = s.shapeRadii;
shapeRadiiUnits = s.shapeRadiiUnits;
shapeRadiiMapUnitScale = s.shapeRadiiMapUnitScale;
shapeFillColor = s.shapeFillColor;
shapeBorderColor = s.shapeBorderColor;
shapeBorderWidth = s.shapeBorderWidth;
shapeBorderWidthUnits = s.shapeBorderWidthUnits;
shapeBorderWidthMapUnitScale = s.shapeBorderWidthMapUnitScale;
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;
shadowOffsetMapUnitScale = s.shadowOffsetMapUnitScale;
shadowOffsetGlobal = s.shadowOffsetGlobal;
shadowRadius = s.shadowRadius;
shadowRadiusUnits = s.shadowRadiusUnits;
shadowRadiusMapUnitScale = s.shadowRadiusMapUnitScale;
shadowRadiusAlphaOnly = s.shadowRadiusAlphaOnly;
shadowTransparency = s.shadowTransparency;
shadowScale = s.shadowScale;
shadowColor = s.shadowColor;
shadowBlendMode = s.shadowBlendMode;
// data defined
removeAllDataDefinedProperties();
QMap< QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* >::const_iterator it = s.dataDefinedProperties.constBegin();
for ( ; it != s.dataDefinedProperties.constEnd(); ++it )
{
dataDefinedProperties.insert( it.key(), it.value() ? new QgsDataDefined( *it.value() ) : nullptr );
}
mDataDefinedNames = s.mDataDefinedNames;
// scale factors
vectorScaleFactor = s.vectorScaleFactor;
rasterCompressFactor = s.rasterCompressFactor;
return *this;
}
QgsPalLayerSettings::~QgsPalLayerSettings()
{
// pal layer is deleted internally in PAL
delete ct;
delete expression;
delete extentGeom;
// delete all QgsDataDefined objects (which also deletes their QgsExpression object)
removeAllDataDefinedProperties();
}
QgsPalLayerSettings QgsPalLayerSettings::fromLayer( QgsVectorLayer* layer )
{
QgsPalLayerSettings settings;
settings.readFromLayer( layer );
return settings;
}
QgsExpression* QgsPalLayerSettings::getLabelExpression()
{
if ( !expression )
{
expression = new QgsExpression( fieldName );
}
return expression;
}
static QColor _readColor( QgsVectorLayer* layer, const QString& property, const 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, const QString& property, const 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 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, QDomElement* parentElem,
QMap < QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* > & propertyMap )
{
if ( !layer && !parentElem )
{
return;
}
QMapIterator<QgsPalLayerSettings::DataDefinedProperties, QPair<QString, int> > i( mDataDefinedNames );
while ( i.hasNext() )
{
i.next();
if ( layer )
{
// reading from layer's custom properties (old way)
readDataDefinedProperty( layer, i.key(), propertyMap );
}
else if ( parentElem )
{
// reading from XML (new way)
QDomElement e = parentElem->firstChildElement( i.value().first );
if ( !e.isNull() )
{
QgsDataDefined* dd = new QgsDataDefined();
if ( dd->setFromXmlElement( e ) )
propertyMap.insert( i.key(), dd );
else
delete dd;
}
}
}
}
void QgsPalLayerSettings::writeDataDefinedPropertyMap( QgsVectorLayer* layer, QDomElement* parentElem,
const QMap < QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* > & propertyMap )
{
if ( !layer && !parentElem )
{
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 ( parentElem )
{
// writing to XML document (instead of writing to layer)
QDomDocument doc = parentElem->ownerDocument();
QDomElement e = dd->toXmlElement( doc, i.value().first );
parentElem->appendChild( e );
}
}
}
if ( layer )
{
// writing to layer's custom properties (old method)
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 );
}
// fix for scale visibility limits triggered off of just its data defined values in the past (<2.0)
if ( oldIndx == 16 || oldIndx == 17 ) // old minScale and maxScale enums
{
scaleVisibility = true;
layer->setCustomProperty( "labeling/scaleVisibility", true );
}
}
// remove old-style field index-based property
layer->removeCustomProperty( oldPropertyName );
}
if ( !ddString.isEmpty() && ddString != QLatin1String( "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::readFromLayer( QgsVectorLayer* layer )
{
if ( layer->customProperty( "labeling" ).toString() != QLatin1String( "pal" ) )
{
if ( layer->geometryType() == QGis::Point )
placement = OrderedPositionsAroundPoint;
// for polygons the "over point" (over centroid) placement is better than the default
// "around point" (around centroid) which is more suitable for points
if ( layer->geometryType() == QGis::Polygon )
placement = OverPoint;
return; // there's no information available
}
// NOTE: set defaults for newly added properties, for backwards compatibility
enabled = layer->labelsEnabled();
drawLabels = layer->customProperty( "labeling/drawLabels", true ).toBool();
// text style
fieldName = layer->customProperty( "labeling/fieldName" ).toString();
isExpression = layer->customProperty( "labeling/isExpression" ).toBool();
QFont appFont = QApplication::font();
mTextFontFamily = layer->customProperty( "labeling/fontFamily", QVariant( appFont.family() ) ).toString();
QString fontFamily = mTextFontFamily;
if ( mTextFontFamily != appFont.family() && !QgsFontUtils::fontFamilyMatchOnSystem( mTextFontFamily ) )
{
// trigger to notify user about font family substitution (signal emitted in QgsVectorLayer::prepareLabelingAndDiagrams)
mTextFontFound = false;
// TODO: update when pref for how to resolve missing family (use matching algorithm or just default font) is implemented
// currently only defaults to matching algorithm for resolving [foundry], if a font of similar family is found (default for QFont)
// for now, do not use matching algorithm for substitution if family not found, substitute default instead
fontFamily = appFont.family();
}
double fontSize = layer->customProperty( "labeling/fontSize" ).toDouble();
fontSizeInMapUnits = layer->customProperty( "labeling/fontSizeInMapUnits" ).toBool();
if ( layer->customProperty( "labeling/fontSizeMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
fontSizeMapUnitScale.minScale = layer->customProperty( "labeling/fontSizeMapUnitMinScale", 0.0 ).toDouble();
fontSizeMapUnitScale.maxScale = layer->customProperty( "labeling/fontSizeMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
fontSizeMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/fontSizeMapUnitScale" ).toString() );
}
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 = QgsFontUtils::translateNamedStyle( layer->customProperty( "labeling/namedStyle", QVariant( "" ) ).toString() );
QgsFontUtils::updateFontViaStyle( textFont, textNamedStyle ); // must come after textFont.setPointSizeF()
textFont.setCapitalization( static_cast< 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(
static_cast< 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 = static_cast< MultiLineAlign >( layer->customProperty( "labeling/multilineAlign", QVariant( MultiFollowPlacement ) ).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 = static_cast< 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" ).toBool();
// 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 (<2.0)
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();
if ( layer->customProperty( "labeling/bufferSizeMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
bufferSizeMapUnitScale.minScale = layer->customProperty( "labeling/bufferSizeMapUnitMinScale", 0.0 ).toDouble();
bufferSizeMapUnitScale.maxScale = layer->customProperty( "labeling/bufferSizeMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
bufferSizeMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/bufferSizeMapUnitScale" ).toString() );
}
bufferColor = _readColor( layer, "labeling/bufferColor", Qt::white, false );
bufferTransp = layer->customProperty( "labeling/bufferTransp" ).toInt();
bufferBlendMode = QgsMapRenderer::getCompositionMode(
static_cast< QgsMapRenderer::BlendMode >( layer->customProperty( "labeling/bufferBlendMode", QVariant( QgsMapRenderer::BlendNormal ) ).toUInt() ) );
bufferJoinStyle = static_cast< 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 = static_cast< ShapeType >( layer->customProperty( "labeling/shapeType", QVariant( ShapeRectangle ) ).toUInt() );
shapeSVGFile = layer->customProperty( "labeling/shapeSVGFile", QVariant( "" ) ).toString();
shapeSizeType = static_cast< 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 = static_cast< SizeUnit >( layer->customProperty( "labeling/shapeSizeUnits", QVariant( MM ) ).toUInt() );
if ( layer->customProperty( "labeling/shapeSizeMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
shapeSizeMapUnitScale.minScale = layer->customProperty( "labeling/shapeSizeMapUnitMinScale", 0.0 ).toDouble();
shapeSizeMapUnitScale.maxScale = layer->customProperty( "labeling/shapeSizeMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
shapeSizeMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/shapeSizeMapUnitScale" ).toString() );
}
shapeRotationType = static_cast< 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 = static_cast< SizeUnit >( layer->customProperty( "labeling/shapeOffsetUnits", QVariant( MM ) ).toUInt() );
if ( layer->customProperty( "labeling/shapeOffsetMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
shapeOffsetMapUnitScale.minScale = layer->customProperty( "labeling/shapeOffsetMapUnitMinScale", 0.0 ).toDouble();
shapeOffsetMapUnitScale.maxScale = layer->customProperty( "labeling/shapeOffsetMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
shapeOffsetMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/shapeOffsetMapUnitScale" ).toString() );
}
shapeRadii = QPointF( layer->customProperty( "labeling/shapeRadiiX", QVariant( 0.0 ) ).toDouble(),
layer->customProperty( "labeling/shapeRadiiY", QVariant( 0.0 ) ).toDouble() );
shapeRadiiUnits = static_cast< SizeUnit >( layer->customProperty( "labeling/shapeRadiiUnits", QVariant( MM ) ).toUInt() );
if ( layer->customProperty( "labeling/shapeRadiiMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
shapeRadiiMapUnitScale.minScale = layer->customProperty( "labeling/shapeRadiiMapUnitMinScale", 0.0 ).toDouble();
shapeRadiiMapUnitScale.maxScale = layer->customProperty( "labeling/shapeRadiiMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
shapeRadiiMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/shapeRadiiMapUnitScale" ).toString() );
}
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 = static_cast< SizeUnit >( layer->customProperty( "labeling/shapeBorderWidthUnits", QVariant( MM ) ).toUInt() );
if ( layer->customProperty( "labeling/shapeBorderWidthMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
shapeBorderWidthMapUnitScale.minScale = layer->customProperty( "labeling/shapeBorderWidthMapUnitMinScale", 0.0 ).toDouble();
shapeBorderWidthMapUnitScale.maxScale = layer->customProperty( "labeling/shapeBorderWidthMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
shapeBorderWidthMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/shapeBorderWidthMapUnitScale" ).toString() );
}
shapeJoinStyle = static_cast< Qt::PenJoinStyle >( layer->customProperty( "labeling/shapeJoinStyle", QVariant( Qt::BevelJoin ) ).toUInt() );
shapeTransparency = layer->customProperty( "labeling/shapeTransparency", QVariant( 0 ) ).toInt();
shapeBlendMode = QgsMapRenderer::getCompositionMode(
static_cast< QgsMapRenderer::BlendMode >( layer->customProperty( "labeling/shapeBlendMode", QVariant( QgsMapRenderer::BlendNormal ) ).toUInt() ) );
// drop shadow
shadowDraw = layer->customProperty( "labeling/shadowDraw", QVariant( false ) ).toBool();
shadowUnder = static_cast< 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 = static_cast< SizeUnit >( layer->customProperty( "labeling/shadowOffsetUnits", QVariant( MM ) ).toUInt() );
if ( layer->customProperty( "labeling/shadowOffsetMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
shadowOffsetMapUnitScale.minScale = layer->customProperty( "labeling/shadowOffsetMapUnitMinScale", 0.0 ).toDouble();
shadowOffsetMapUnitScale.maxScale = layer->customProperty( "labeling/shadowOffsetMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
shadowOffsetMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/shadowOffsetMapUnitScale" ).toString() );
}
shadowOffsetGlobal = layer->customProperty( "labeling/shadowOffsetGlobal", QVariant( true ) ).toBool();
shadowRadius = layer->customProperty( "labeling/shadowRadius", QVariant( 1.5 ) ).toDouble();
shadowRadiusUnits = static_cast< SizeUnit >( layer->customProperty( "labeling/shadowRadiusUnits", QVariant( MM ) ).toUInt() );
if ( layer->customProperty( "labeling/shadowRadiusMapUnitScale" ).toString().isEmpty() )
{
//fallback to older property
shadowRadiusMapUnitScale.minScale = layer->customProperty( "labeling/shadowRadiusMapUnitMinScale", 0.0 ).toDouble();
shadowRadiusMapUnitScale.maxScale = layer->customProperty( "labeling/shadowRadiusMapUnitMaxScale", 0.0 ).toDouble();
}
else
{
shadowRadiusMapUnitScale = QgsSymbolLayerV2Utils::decodeMapUnitScale( layer->customProperty( "labeling/shadowRadiusMapUnitScale" ).toString() );