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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 "qgscsexception.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 "qgsdiagramrenderer.h"
#include "qgsfontutils.h"
#include "qgslabelsearchtree.h"
#include "qgsexpression.h"
#include "qgslabelingengine.h"
#include "qgsvectorlayerlabeling.h"
#include <qgslogger.h>
#include <qgsvectorlayer.h>
#include <qgsvectordataprovider.h>
#include <qgsvectorlayerdiagramprovider.h>
#include <qgsvectorlayerlabelprovider.h>
#include <qgsgeometry.h>
#include <qgsmarkersymbollayer.h>
#include <qgspainting.h>
#include <qgsproject.h>
#include "qgsproperty.h"
#include "qgssymbollayerutils.h"
#include "qgsmaptopixelgeometrysimplifier.h"
#include <QMessageBox>
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...!)
*/
const QVector< QgsPalLayerSettings::PredefinedPointPosition > QgsPalLayerSettings::DEFAULT_PLACEMENT_ORDER
{
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;*/
QgsPropertiesDefinition QgsPalLayerSettings::sPropertyDefinitions;
void QgsPalLayerSettings::initPropertyDefinitions()
{
if ( !sPropertyDefinitions.isEmpty() )
return;
sPropertyDefinitions = QgsPropertiesDefinition
{
{ QgsPalLayerSettings::Size, QgsPropertyDefinition( "Size", QObject::tr( "Font size" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::Bold, QgsPropertyDefinition( "Bold", QObject::tr( "Bold style" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::Italic, QgsPropertyDefinition( "Italic", QObject::tr( "Italic style" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::Underline, QgsPropertyDefinition( "Underline", QObject::tr( "Draw underline" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::Color, QgsPropertyDefinition( "Color", QObject::tr( "Text color" ), QgsPropertyDefinition::ColorNoAlpha ) },
{ QgsPalLayerSettings::Strikeout, QgsPropertyDefinition( "Strikeout", QObject::tr( "Draw strikeout" ), QgsPropertyDefinition::Boolean ) },
{
QgsPalLayerSettings::Family, QgsPropertyDefinition( "Family", QgsPropertyDefinition::DataTypeString, QObject::tr( "Font family" ), QObject::tr( "string " ) + QObject::tr( "[<b>family</b>|<b>family[foundry]</b>],<br>"
"e.g. Helvetica or Helvetica [Cronyx]" ) )
},
{
QgsPalLayerSettings::FontStyle, QgsPropertyDefinition( "FontStyle", QgsPropertyDefinition::DataTypeString, QObject::tr( "Font style" ), QObject::tr( "string " ) + QObject::tr( "[<b>font style name</b>|<b>Ignore</b>],<br>"
"e.g. Bold Condensed or Light Italic" ) )
},
{ QgsPalLayerSettings::FontSizeUnit, QgsPropertyDefinition( "FontSizeUnit", QObject::tr( "Font size units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::FontTransp, QgsPropertyDefinition( "FontTransp", QObject::tr( "Text transparency" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::FontOpacity, QgsPropertyDefinition( "FontOpacity", QObject::tr( "Text opacity" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::FontCase, QgsPropertyDefinition( "FontCase", QgsPropertyDefinition::DataTypeString, QObject::tr( "Font case" ), QObject::tr( "string " ) + QStringLiteral( "[<b>NoChange</b>|<b>Upper</b>|<br><b>Lower</b>|<b>Capitalize</b>]" ) ) },
{ QgsPalLayerSettings::FontLetterSpacing, QgsPropertyDefinition( "FontLetterSpacing", QObject::tr( "Letter spacing" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::FontWordSpacing, QgsPropertyDefinition( "FontWordSpacing", QObject::tr( "Word spacing" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::FontBlendMode, QgsPropertyDefinition( "FontBlendMode", QObject::tr( "Text blend mode" ), QgsPropertyDefinition::BlendMode ) },
{ QgsPalLayerSettings::MultiLineWrapChar, QgsPropertyDefinition( "MultiLineWrapChar", QObject::tr( "Wrap character" ), QgsPropertyDefinition::String ) },
{ QgsPalLayerSettings::MultiLineHeight, QgsPropertyDefinition( "MultiLineHeight", QObject::tr( "Line height" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::MultiLineAlignment, QgsPropertyDefinition( "MultiLineAlignment", QgsPropertyDefinition::DataTypeString, QObject::tr( "Line alignment" ), QObject::tr( "string " ) + "[<b>Left</b>|<b>Center</b>|<b>Right</b>|<b>Follow</b>]" ) },
{ QgsPalLayerSettings::DirSymbDraw, QgsPropertyDefinition( "DirSymbDraw", QObject::tr( "Draw direction symbol" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::DirSymbLeft, QgsPropertyDefinition( "DirSymbLeft", QObject::tr( "Left direction symbol" ), QgsPropertyDefinition::String ) },
{ QgsPalLayerSettings::DirSymbRight, QgsPropertyDefinition( "DirSymbRight", QObject::tr( "Right direction symbol" ), QgsPropertyDefinition::String ) },
{ QgsPalLayerSettings::DirSymbPlacement, QgsPropertyDefinition( "DirSymbPlacement", QgsPropertyDefinition::DataTypeString, QObject::tr( "Direction symbol placement" ), QObject::tr( "string " ) + "[<b>LeftRight</b>|<b>Above</b>|<b>Below</b>]" ) },
{ QgsPalLayerSettings::DirSymbReverse, QgsPropertyDefinition( "DirSymbReverse", QObject::tr( "Reverse direction symbol" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::NumFormat, QgsPropertyDefinition( "NumFormat", QObject::tr( "Format as number" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::NumDecimals, QgsPropertyDefinition( "NumDecimals", QObject::tr( "Number of decimal places" ), QgsPropertyDefinition::IntegerPositive ) },
{ QgsPalLayerSettings::NumPlusSign, QgsPropertyDefinition( "NumPlusSign", QObject::tr( "Draw + sign" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::BufferDraw, QgsPropertyDefinition( "BufferDraw", QObject::tr( "Draw buffer" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::BufferSize, QgsPropertyDefinition( "BufferSize", QObject::tr( "Symbol size" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::BufferUnit, QgsPropertyDefinition( "BufferUnit", QObject::tr( "Buffer units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::BufferColor, QgsPropertyDefinition( "BufferColor", QObject::tr( "Buffer color" ), QgsPropertyDefinition::ColorNoAlpha ) },
{ QgsPalLayerSettings::BufferTransp, QgsPropertyDefinition( "BufferTransp", QObject::tr( "Buffer transparency" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::BufferOpacity, QgsPropertyDefinition( "BufferOpacity", QObject::tr( "Buffer opacity" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::BufferJoinStyle, QgsPropertyDefinition( "BufferJoinStyle", QObject::tr( "Buffer join style" ), QgsPropertyDefinition::PenJoinStyle ) },
{ QgsPalLayerSettings::BufferBlendMode, QgsPropertyDefinition( "BufferBlendMode", QObject::tr( "Buffer blend mode" ), QgsPropertyDefinition::BlendMode ) },
{ QgsPalLayerSettings::ShapeDraw, QgsPropertyDefinition( "ShapeDraw", QObject::tr( "Draw shape" ), QgsPropertyDefinition::Boolean ) },
{
QgsPalLayerSettings::ShapeKind, QgsPropertyDefinition( "ShapeKind", QgsPropertyDefinition::DataTypeString, QObject::tr( "Shape type" ), QObject::tr( "string " ) + QStringLiteral( "[<b>Rectangle</b>|<b>Square</b>|<br>"
"<b>Ellipse</b>|<b>Circle</b>|<b>SVG</b>]" ) )
},
{ QgsPalLayerSettings::ShapeSVGFile, QgsPropertyDefinition( "ShapeSVGFile", QObject::tr( "Shape SVG path" ), QgsPropertyDefinition::SvgPath ) },
{ QgsPalLayerSettings::ShapeSizeType, QgsPropertyDefinition( "ShapeSizeType", QgsPropertyDefinition::DataTypeString, QObject::tr( "Shape size type" ), QObject::tr( "string " ) + "[<b>Buffer</b>|<b>Fixed</b>]" ) },
{ QgsPalLayerSettings::ShapeSizeX, QgsPropertyDefinition( "ShapeSizeX", QObject::tr( "Shape size (X)" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::ShapeSizeY, QgsPropertyDefinition( "ShapeSizeY", QObject::tr( "Shape size (Y)" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::ShapeSizeUnits, QgsPropertyDefinition( "ShapeSizeUnits", QObject::tr( "Shape size units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::ShapeRotationType, QgsPropertyDefinition( "ShapeRotationType", QgsPropertyDefinition::DataTypeString, QObject::tr( "Shape rotation type" ), QObject::tr( "string " ) + "[<b>Sync</b>|<b>Offset</b>|<b>Fixed</b>]" ) },
{ QgsPalLayerSettings::ShapeRotation, QgsPropertyDefinition( "ShapeRotation", QObject::tr( "Shape rotation" ), QgsPropertyDefinition::Rotation ) },
{ QgsPalLayerSettings::ShapeOffset, QgsPropertyDefinition( "ShapeOffset", QObject::tr( "Shape offset" ), QgsPropertyDefinition::Offset ) },
{ QgsPalLayerSettings::ShapeOffsetUnits, QgsPropertyDefinition( "ShapeOffsetUnits", QObject::tr( "Shape offset units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::ShapeRadii, QgsPropertyDefinition( "ShapeRadii", QObject::tr( "Shape radii" ), QgsPropertyDefinition::Size2D ) },
{ QgsPalLayerSettings::ShapeRadiiUnits, QgsPropertyDefinition( "ShapeRadiiUnits", QObject::tr( "Symbol radii units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::ShapeTransparency, QgsPropertyDefinition( "ShapeTransparency", QObject::tr( "Shape transparency" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::ShapeOpacity, QgsPropertyDefinition( "ShapeOpacity", QObject::tr( "Shape opacity" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::ShapeBlendMode, QgsPropertyDefinition( "ShapeBlendMode", QObject::tr( "Shape blend mode" ), QgsPropertyDefinition::BlendMode ) },
{ QgsPalLayerSettings::ShapeFillColor, QgsPropertyDefinition( "ShapeFillColor", QObject::tr( "Shape fill color" ), QgsPropertyDefinition::ColorWithAlpha ) },
{ QgsPalLayerSettings::ShapeStrokeColor, QgsPropertyDefinition( "ShapeBorderColor", QObject::tr( "Shape stroke color" ), QgsPropertyDefinition::ColorWithAlpha ) },
{ QgsPalLayerSettings::ShapeStrokeWidth, QgsPropertyDefinition( "ShapeBorderWidth", QObject::tr( "Shape stroke width" ), QgsPropertyDefinition::StrokeWidth ) },
{ QgsPalLayerSettings::ShapeStrokeWidthUnits, QgsPropertyDefinition( "ShapeBorderWidthUnits", QObject::tr( "Shape stroke width units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::ShapeJoinStyle, QgsPropertyDefinition( "ShapeJoinStyle", QObject::tr( "Shape join style" ), QgsPropertyDefinition::PenJoinStyle ) },
{ QgsPalLayerSettings::ShadowDraw, QgsPropertyDefinition( "ShadowDraw", QObject::tr( "Draw shadow" ), QgsPropertyDefinition::Boolean ) },
{
QgsPalLayerSettings::ShadowUnder, QgsPropertyDefinition( "ShadowUnder", QgsPropertyDefinition::DataTypeString, QObject::tr( "Symbol size" ), QObject::tr( "string " ) + QStringLiteral( "[<b>Lowest</b>|<b>Text</b>|<br>"
"<b>Buffer</b>|<b>Background</b>]" ) )
},
{ QgsPalLayerSettings::ShadowOffsetAngle, QgsPropertyDefinition( "ShadowOffsetAngle", QObject::tr( "Shadow offset angle" ), QgsPropertyDefinition::Rotation ) },
{ QgsPalLayerSettings::ShadowOffsetDist, QgsPropertyDefinition( "ShadowOffsetDist", QObject::tr( "Shadow offset distance" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::ShadowOffsetUnits, QgsPropertyDefinition( "ShadowOffsetUnits", QObject::tr( "Shadow offset units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::ShadowRadius, QgsPropertyDefinition( "ShadowRadius", QObject::tr( "Shadow blur radius" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::ShadowRadiusUnits, QgsPropertyDefinition( "ShadowRadiusUnits", QObject::tr( "Shadow blur units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::ShadowTransparency, QgsPropertyDefinition( "ShadowTransparency", QObject::tr( "Shadow transparency" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::ShadowOpacity, QgsPropertyDefinition( "ShadowOpacity", QObject::tr( "Shadow opacity" ), QgsPropertyDefinition::Transparency ) },
{ QgsPalLayerSettings::ShadowScale, QgsPropertyDefinition( "ShadowScale", QObject::tr( "Shadow scale" ), QgsPropertyDefinition::IntegerPositive ) },
{ QgsPalLayerSettings::ShadowColor, QgsPropertyDefinition( "ShadowColor", QObject::tr( "Shadow color" ), QgsPropertyDefinition::ColorNoAlpha ) },
{ QgsPalLayerSettings::ShadowBlendMode, QgsPropertyDefinition( "ShadowBlendMode", QObject::tr( "Shadow blend mode" ), QgsPropertyDefinition::BlendMode ) },
{ QgsPalLayerSettings::CentroidWhole, QgsPropertyDefinition( "CentroidWhole", QgsPropertyDefinition::DataTypeString, QObject::tr( "Centroid of whole shape" ), QObject::tr( "string " ) + "[<b>Visible</b>|<b>Whole</b>]" ) },
{
QgsPalLayerSettings::OffsetQuad, QgsPropertyDefinition( "OffsetQuad", QgsPropertyDefinition::DataTypeString, QObject::tr( "Offset quadrant" ), QObject::tr( "int<br>" ) + QStringLiteral( "[<b>0</b>=Above Left|<b>1</b>=Above|<b>2</b>=Above Right|<br>"
"<b>3</b>=Left|<b>4</b>=Over|<b>5</b>=Right|<br>"
"<b>6</b>=Below Left|<b>7</b>=Below|<b>8</b>=Below Right]" ) )
},
{ QgsPalLayerSettings::OffsetXY, QgsPropertyDefinition( "OffsetXY", QObject::tr( "Offset" ), QgsPropertyDefinition::Offset ) },
{ QgsPalLayerSettings::OffsetUnits, QgsPropertyDefinition( "OffsetUnits", QObject::tr( "Offset units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::LabelDistance, QgsPropertyDefinition( "LabelDistance", QObject::tr( "Label distance" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::DistanceUnits, QgsPropertyDefinition( "DistanceUnits", QObject::tr( "Label distance units" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::OffsetRotation, QgsPropertyDefinition( "OffsetRotation", QObject::tr( "Offset rotation" ), QgsPropertyDefinition::Rotation ) },
{ QgsPalLayerSettings::CurvedCharAngleInOut, QgsPropertyDefinition( "CurvedCharAngleInOut", QgsPropertyDefinition::DataTypeString, QObject::tr( "Curved character angles" ), QObject::tr( "double coord [<b>in,out</b> as 20.0-60.0,20.0-95.0]" ) ) },
{ QgsPalLayerSettings::RepeatDistance, QgsPropertyDefinition( "RepeatDistance", QObject::tr( "Repeat distance" ), QgsPropertyDefinition::DoublePositive ) },
{ QgsPalLayerSettings::RepeatDistanceUnit, QgsPropertyDefinition( "RepeatDistanceUnit", QObject::tr( "Repeat distance unit" ), QgsPropertyDefinition::RenderUnits ) },
{ QgsPalLayerSettings::Priority, QgsPropertyDefinition( "Priority", QgsPropertyDefinition::DataTypeString, QObject::tr( "Label priority" ), QObject::tr( "double [0.0-10.0]" ) ) },
{ QgsPalLayerSettings::IsObstacle, QgsPropertyDefinition( "IsObstacle", QObject::tr( "Feature is a label obstacle" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::ObstacleFactor, QgsPropertyDefinition( "ObstacleFactor", QgsPropertyDefinition::DataTypeNumeric, QObject::tr( "Obstacle factor" ), QObject::tr( "double [0.0-10.0]" ) ) },
{
QgsPalLayerSettings::PredefinedPositionOrder, QgsPropertyDefinition( "PredefinedPositionOrder", QgsPropertyDefinition::DataTypeString, QObject::tr( "Predefined position order" ), QObject::tr( "Comma separated list of placements in order of priority<br>" )
+ QStringLiteral( "[<b>TL</b>=Top left|<b>TSL</b>=Top, slightly left|<b>T</b>=Top middle|<br>"
"<b>TSR</b>=Top, slightly right|<b>TR</b>=Top right|<br>"
"<b>L</b>=Left|<b>R</b>=Right|<br>"
"<b>BL</b>=Bottom left|<b>BSL</b>=Bottom, slightly left|<b>B</b>=Bottom middle|<br>"
"<b>BSR</b>=Bottom, slightly right|<b>BR</b>=Bottom right]" ) )
},
{ QgsPalLayerSettings::PositionX, QgsPropertyDefinition( "PositionX", QObject::tr( "Position (X)" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::PositionY, QgsPropertyDefinition( "PositionY", QObject::tr( "Position (Y)" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::Hali, QgsPropertyDefinition( "Hali", QgsPropertyDefinition::DataTypeString, QObject::tr( "Horizontal alignment" ), QObject::tr( "string " ) + "[<b>Left</b>|<b>Center</b>|<b>Right</b>]" ) },
{
QgsPalLayerSettings::Vali, QgsPropertyDefinition( "Vali", QgsPropertyDefinition::DataTypeString, QObject::tr( "Vertical alignment" ), QObject::tr( "string " ) + QStringLiteral( "[<b>Bottom</b>|<b>Base</b>|<br>"
"<b>Half</b>|<b>Cap</b>|<b>Top</b>]" ) )
},
{ QgsPalLayerSettings::Rotation, QgsPropertyDefinition( "Rotation", QObject::tr( "Label rotation" ), QgsPropertyDefinition::Rotation ) },
{ QgsPalLayerSettings::ScaleVisibility, QgsPropertyDefinition( "ScaleVisibility", QObject::tr( "Scale based visibility" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::MinScale, QgsPropertyDefinition( "MinScale", QObject::tr( "Minimum scale (denominator)" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::MaxScale, QgsPropertyDefinition( "MaxScale", QObject::tr( "Maximum scale (denominator)" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::FontLimitPixel, QgsPropertyDefinition( "FontLimitPixel", QObject::tr( "Limit font pixel size" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::FontMinPixel, QgsPropertyDefinition( "FontMinPixel", QObject::tr( "Minimum pixel size" ), QgsPropertyDefinition::IntegerPositive ) },
{ QgsPalLayerSettings::FontMaxPixel, QgsPropertyDefinition( "FontMaxPixel", QObject::tr( "Maximum pixel size" ), QgsPropertyDefinition::IntegerPositive ) },
{ QgsPalLayerSettings::ZIndex, QgsPropertyDefinition( "ZIndex", QObject::tr( "Label z-index" ), QgsPropertyDefinition::Double ) },
{ QgsPalLayerSettings::Show, QgsPropertyDefinition( "Show", QObject::tr( "Show label" ), QgsPropertyDefinition::Boolean ) },
{ QgsPalLayerSettings::AlwaysShow, QgsPropertyDefinition( "AlwaysShow", QObject::tr( "Always show label" ), QgsPropertyDefinition::Boolean ) },
};
}
QgsPalLayerSettings::QgsPalLayerSettings()
: upsidedownLabels( Upright )
, mCurFeat( nullptr )
, xform( nullptr )
, extentGeom( nullptr )
, mFeaturesToLabel( 0 )
, mFeatsSendingToPal( 0 )
, mFeatsRegPal( 0 )
, expression( nullptr )
{
initPropertyDefinitions();
drawLabels = true;
isExpression = false;
fieldIndex = 0;
previewBkgrdColor = Qt::white;
useSubstitutions = false;
// text formatting
wrapChar = QLatin1String( "" );
multilineAlign = MultiFollowPlacement;
addDirectionSymbol = false;
leftDirectionSymbol = QStringLiteral( "<" );
rightDirectionSymbol = QStringLiteral( ">" );
reverseDirectionSymbol = false;
placeDirectionSymbol = SymbolLeftRight;
formatNumbers = false;
decimals = 3;
plusSign = false;
// 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;
}
QgsPalLayerSettings::QgsPalLayerSettings( const QgsPalLayerSettings &s )
: mCurFeat( nullptr )
, fieldIndex( 0 )
, xform( nullptr )
, extentGeom( nullptr )
, mFeaturesToLabel( 0 )
, mFeatsSendingToPal( 0 )
, mFeatsRegPal( 0 )
, mDataDefinedProperties( s.mDataDefinedProperties )
, expression( nullptr )
{
*this = s;
}
QgsPalLayerSettings &QgsPalLayerSettings::operator=( const QgsPalLayerSettings &s )
{
if ( this == &s )
return *this;
// copy only permanent stuff
drawLabels = s.drawLabels;
// text style
fieldName = s.fieldName;
isExpression = s.isExpression;
previewBkgrdColor = s.previewBkgrdColor;
substitutions = s.substitutions;
useSubstitutions = s.useSubstitutions;
// text formatting
wrapChar = s.wrapChar;
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;
// 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 && !s.addDirectionSymbol;
minFeatureSize = s.minFeatureSize;
limitNumLabels = s.limitNumLabels;
maxNumLabels = s.maxNumLabels;
obstacle = s.obstacle;
obstacleFactor = s.obstacleFactor;
obstacleType = s.obstacleType;
zIndex = s.zIndex;
mFormat = s.mFormat;
mDataDefinedProperties = s.mDataDefinedProperties;
return *this;
}
QgsPalLayerSettings::~QgsPalLayerSettings()
{
// pal layer is deleted internally in PAL
delete expression;
}
const QgsPropertiesDefinition &QgsPalLayerSettings::propertyDefinitions()
{
initPropertyDefinitions();
return sPropertyDefinitions;
}
QgsExpression *QgsPalLayerSettings::getLabelExpression()
{
if ( !expression )
{
expression = new QgsExpression( fieldName );
}
return expression;
}
static QgsPalLayerSettings::SizeUnit _decodeUnits( const QString &str )
{
if ( str.compare( QLatin1String( "Point" ), Qt::CaseInsensitive ) == 0
|| str.compare( QLatin1String( "Points" ), Qt::CaseInsensitive ) == 0 ) return QgsPalLayerSettings::Points;
if ( str.compare( QLatin1String( "MapUnit" ), Qt::CaseInsensitive ) == 0
|| str.compare( QLatin1String( "MapUnits" ), Qt::CaseInsensitive ) == 0 ) return QgsPalLayerSettings::MapUnits;
if ( str.compare( QLatin1String( "Percent" ), Qt::CaseInsensitive ) == 0 ) return QgsPalLayerSettings::Percent;
return QgsPalLayerSettings::MM; // "MM"
}
static Qt::PenJoinStyle _decodePenJoinStyle( const QString &str )
{
if ( str.compare( QLatin1String( "Miter" ), Qt::CaseInsensitive ) == 0 ) return Qt::MiterJoin;
if ( str.compare( QLatin1String( "Round" ), Qt::CaseInsensitive ) == 0 ) return Qt::RoundJoin;
return Qt::BevelJoin; // "Bevel"
}
QString updateDataDefinedString( const QString &value )
{
// TODO: update or remove this when project settings for labeling are migrated to better XML layout
QString newValue = value;
if ( !value.isEmpty() && !value.contains( QLatin1String( "~~" ) ) )
{
QStringList values;
values << QStringLiteral( "1" ); // all old-style values are active if not empty
values << QStringLiteral( "0" );
values << QLatin1String( "" );
values << value; // all old-style values are only field names
newValue = values.join( QStringLiteral( "~~" ) );
}
return newValue;
}
void QgsPalLayerSettings::readOldDataDefinedProperty( QgsVectorLayer *layer, QgsPalLayerSettings::Property p )
{
QString newPropertyName = "labeling/dataDefined/" + sPropertyDefinitions.value( p ).name();
QVariant newPropertyField = layer->customProperty( newPropertyName, QVariant() );
if ( !newPropertyField.isValid() )
return;
QString ddString = newPropertyField.toString();
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( QStringLiteral( "~~" ) );
bool active = ddv.at( 0 ).toInt();
if ( ddv.at( 1 ).toInt() )
{
mDataDefinedProperties.setProperty( p, QgsProperty::fromExpression( ddv.at( 2 ), active ) );
}
else
{
mDataDefinedProperties.setProperty( p, QgsProperty::fromField( ddv.at( 3 ), active ) );
}
}
else
{
// remove unused properties
layer->removeCustomProperty( newPropertyName );
}
}
void QgsPalLayerSettings::readOldDataDefinedPropertyMap( QgsVectorLayer *layer, QDomElement *parentElem )
{
if ( !layer && !parentElem )
{
return;
}
QgsPropertiesDefinition::const_iterator i = sPropertyDefinitions.constBegin();
for ( ; i != sPropertyDefinitions.constEnd(); ++i )
{
if ( layer )
{
// reading from layer's custom properties
readOldDataDefinedProperty( layer, static_cast< Property >( i.key() ) );
}
else if ( parentElem )
{
// reading from XML
QDomElement e = parentElem->firstChildElement( i.value().name() );
if ( !e.isNull() )
{
bool active = e.attribute( QStringLiteral( "active" ) ).compare( QLatin1String( "true" ), Qt::CaseInsensitive ) == 0;
bool isExpression = e.attribute( QStringLiteral( "useExpr" ) ).compare( QLatin1String( "true" ), Qt::CaseInsensitive ) == 0;
if ( isExpression )
{
mDataDefinedProperties.setProperty( i.key(), QgsProperty::fromExpression( e.attribute( QStringLiteral( "expr" ) ), active ) );
}
else
{
mDataDefinedProperties.setProperty( i.key(), QgsProperty::fromField( e.attribute( QStringLiteral( "field" ) ), active ) );
}
}
}
}
}
void QgsPalLayerSettings::readFromLayerCustomProperties( QgsVectorLayer *layer )
{
if ( layer->customProperty( QStringLiteral( "labeling" ) ).toString() != QLatin1String( "pal" ) )
{
if ( layer->geometryType() == QgsWkbTypes::PointGeometry )
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() == QgsWkbTypes::PolygonGeometry )
placement = OverPoint;
return; // there's no information available
}
// NOTE: set defaults for newly added properties, for backwards compatibility
drawLabels = layer->customProperty( QStringLiteral( "labeling/drawLabels" ), true ).toBool();
mFormat.readFromLayer( layer );
// text style
fieldName = layer->customProperty( QStringLiteral( "labeling/fieldName" ) ).toString();
isExpression = layer->customProperty( QStringLiteral( "labeling/isExpression" ) ).toBool();
previewBkgrdColor = QColor( layer->customProperty( QStringLiteral( "labeling/previewBkgrdColor" ), QVariant( "#ffffff" ) ).toString() );
QDomDocument doc( QStringLiteral( "substitutions" ) );
doc.setContent( layer->customProperty( QStringLiteral( "labeling/substitutions" ) ).toString() );
QDomElement replacementElem = doc.firstChildElement( QStringLiteral( "substitutions" ) );
substitutions.readXml( replacementElem );
useSubstitutions = layer->customProperty( QStringLiteral( "labeling/useSubstitutions" ) ).toBool();
// text formatting
wrapChar = layer->customProperty( QStringLiteral( "labeling/wrapChar" ) ).toString();
multilineAlign = static_cast< MultiLineAlign >( layer->customProperty( QStringLiteral( "labeling/multilineAlign" ), QVariant( MultiFollowPlacement ) ).toUInt() );
addDirectionSymbol = layer->customProperty( QStringLiteral( "labeling/addDirectionSymbol" ) ).toBool();
leftDirectionSymbol = layer->customProperty( QStringLiteral( "labeling/leftDirectionSymbol" ), QVariant( "<" ) ).toString();
rightDirectionSymbol = layer->customProperty( QStringLiteral( "labeling/rightDirectionSymbol" ), QVariant( ">" ) ).toString();
reverseDirectionSymbol = layer->customProperty( QStringLiteral( "labeling/reverseDirectionSymbol" ) ).toBool();
placeDirectionSymbol = static_cast< DirectionSymbols >( layer->customProperty( QStringLiteral( "labeling/placeDirectionSymbol" ), QVariant( SymbolLeftRight ) ).toUInt() );
formatNumbers = layer->customProperty( QStringLiteral( "labeling/formatNumbers" ) ).toBool();
decimals = layer->customProperty( QStringLiteral( "labeling/decimals" ) ).toInt();
plusSign = layer->customProperty( QStringLiteral( "labeling/plussign" ) ).toBool();
// placement
placement = static_cast< Placement >( layer->customProperty( QStringLiteral( "labeling/placement" ) ).toInt() );
placementFlags = layer->customProperty( QStringLiteral( "labeling/placementFlags" ) ).toUInt();
centroidWhole = layer->customProperty( QStringLiteral( "labeling/centroidWhole" ), QVariant( false ) ).toBool();
centroidInside = layer->customProperty( QStringLiteral( "labeling/centroidInside" ), QVariant( false ) ).toBool();
predefinedPositionOrder = QgsLabelingUtils::decodePredefinedPositionOrder( layer->customProperty( QStringLiteral( "labeling/predefinedPositionOrder" ) ).toString() );
if ( predefinedPositionOrder.isEmpty() )
predefinedPositionOrder = DEFAULT_PLACEMENT_ORDER;
fitInPolygonOnly = layer->customProperty( QStringLiteral( "labeling/fitInPolygonOnly" ), QVariant( false ) ).toBool();
dist = layer->customProperty( QStringLiteral( "labeling/dist" ) ).toDouble();
distInMapUnits = layer->customProperty( QStringLiteral( "labeling/distInMapUnits" ) ).toBool();
if ( layer->customProperty( QStringLiteral( "labeling/distMapUnitScale" ) ).toString().isEmpty() )
{
//fallback to older property
distMapUnitScale.minScale = layer->customProperty( QStringLiteral( "labeling/distMapUnitMinScale" ), 0.0 ).toDouble();
distMapUnitScale.maxScale = layer->customProperty( QStringLiteral( "labeling/distMapUnitMaxScale" ), 0.0 ).toDouble();
}
else
{
distMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( layer->customProperty( QStringLiteral( "labeling/distMapUnitScale" ) ).toString() );
}
offsetType = static_cast< OffsetType >( layer->customProperty( QStringLiteral( "labeling/offsetType" ), QVariant( FromPoint ) ).toUInt() );
quadOffset = static_cast< QuadrantPosition >( layer->customProperty( QStringLiteral( "labeling/quadOffset" ), QVariant( QuadrantOver ) ).toUInt() );
xOffset = layer->customProperty( QStringLiteral( "labeling/xOffset" ), QVariant( 0.0 ) ).toDouble();
yOffset = layer->customProperty( QStringLiteral( "labeling/yOffset" ), QVariant( 0.0 ) ).toDouble();
labelOffsetInMapUnits = layer->customProperty( QStringLiteral( "labeling/labelOffsetInMapUnits" ), QVariant( true ) ).toBool();
if ( layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitScale" ) ).toString().isEmpty() )
{
//fallback to older property
labelOffsetMapUnitScale.minScale = layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitMinScale" ), 0.0 ).toDouble();
labelOffsetMapUnitScale.maxScale = layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitMaxScale" ), 0.0 ).toDouble();
}
else
{
labelOffsetMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitScale" ) ).toString() );
}
angleOffset = layer->customProperty( QStringLiteral( "labeling/angleOffset" ), QVariant( 0.0 ) ).toDouble();
preserveRotation = layer->customProperty( QStringLiteral( "labeling/preserveRotation" ), QVariant( true ) ).toBool();
maxCurvedCharAngleIn = layer->customProperty( QStringLiteral( "labeling/maxCurvedCharAngleIn" ), QVariant( 25.0 ) ).toDouble();
maxCurvedCharAngleOut = layer->customProperty( QStringLiteral( "labeling/maxCurvedCharAngleOut" ), QVariant( -25.0 ) ).toDouble();
priority = layer->customProperty( QStringLiteral( "labeling/priority" ) ).toInt();
repeatDistance = layer->customProperty( QStringLiteral( "labeling/repeatDistance" ), 0.0 ).toDouble();
repeatDistanceUnit = static_cast< SizeUnit >( layer->customProperty( QStringLiteral( "labeling/repeatDistanceUnit" ), QVariant( MM ) ).toUInt() );
if ( layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitScale" ) ).toString().isEmpty() )
{
//fallback to older property
repeatDistanceMapUnitScale.minScale = layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitMinScale" ), 0.0 ).toDouble();
repeatDistanceMapUnitScale.maxScale = layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitMaxScale" ), 0.0 ).toDouble();
}
else
{
repeatDistanceMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitScale" ) ).toString() );
}
// rendering
int scalemn = layer->customProperty( QStringLiteral( "labeling/scaleMin" ), QVariant( 0 ) ).toInt();
int scalemx = layer->customProperty( QStringLiteral( "labeling/scaleMax" ), QVariant( 0 ) ).toInt();
// fix for scale visibility limits being keyed off of just its values in the past (<2.0)
QVariant scalevis = layer->customProperty( QStringLiteral( "labeling/scaleVisibility" ), QVariant() );
if ( scalevis.isValid() )
{
scaleVisibility = scalevis.toBool();
scaleMin = scalemn;
scaleMax = scalemx;
}
else if ( scalemn > 0 || scalemx > 0 )
{
scaleVisibility = true;
scaleMin = scalemn;
scaleMax = scalemx;
}
else
{
// keep scaleMin and scaleMax at new 1.0 defaults (1 and 10000000, were 0 and 0)
scaleVisibility = false;
}
fontLimitPixelSize = layer->customProperty( QStringLiteral( "labeling/fontLimitPixelSize" ), QVariant( false ) ).toBool();
fontMinPixelSize = layer->customProperty( QStringLiteral( "labeling/fontMinPixelSize" ), QVariant( 0 ) ).toInt();
fontMaxPixelSize = layer->customProperty( QStringLiteral( "labeling/fontMaxPixelSize" ), QVariant( 10000 ) ).toInt();
displayAll = layer->customProperty( QStringLiteral( "labeling/displayAll" ), QVariant( false ) ).toBool();
upsidedownLabels = static_cast< UpsideDownLabels >( layer->customProperty( QStringLiteral( "labeling/upsidedownLabels" ), QVariant( Upright ) ).toUInt() );
labelPerPart = layer->customProperty( QStringLiteral( "labeling/labelPerPart" ) ).toBool();
mergeLines = layer->customProperty( QStringLiteral( "labeling/mergeLines" ) ).toBool();
minFeatureSize = layer->customProperty( QStringLiteral( "labeling/minFeatureSize" ) ).toDouble();
limitNumLabels = layer->customProperty( QStringLiteral( "labeling/limitNumLabels" ), QVariant( false ) ).toBool();
maxNumLabels = layer->customProperty( QStringLiteral( "labeling/maxNumLabels" ), QVariant( 2000 ) ).toInt();
obstacle = layer->customProperty( QStringLiteral( "labeling/obstacle" ), QVariant( true ) ).toBool();
obstacleFactor = layer->customProperty( QStringLiteral( "labeling/obstacleFactor" ), QVariant( 1.0 ) ).toDouble();
obstacleType = static_cast< ObstacleType >( layer->customProperty( QStringLiteral( "labeling/obstacleType" ), QVariant( PolygonInterior ) ).toUInt() );
zIndex = layer->customProperty( QStringLiteral( "labeling/zIndex" ), QVariant( 0.0 ) ).toDouble();
mDataDefinedProperties.clear();
if ( layer->customProperty( QStringLiteral( "labeling/ddProperties" ) ).isValid() )
{
QDomDocument doc( QStringLiteral( "dd" ) );
doc.setContent( layer->customProperty( QStringLiteral( "labeling/ddProperties" ) ).toString() );
QDomElement elem = doc.firstChildElement( QStringLiteral( "properties" ) );
mDataDefinedProperties.readXml( elem, sPropertyDefinitions );
}
else
{
// read QGIS 2.x style data defined properties
readOldDataDefinedPropertyMap( layer, nullptr );
}
// upgrade older data defined settings
if ( mDataDefinedProperties.isActive( FontTransp ) )
{
mDataDefinedProperties.setProperty( FontOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( FontTransp ).asExpression() ) ) );
mDataDefinedProperties.setProperty( FontTransp, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( BufferTransp ) )
{
mDataDefinedProperties.setProperty( BufferOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( BufferTransp ).asExpression() ) ) );
mDataDefinedProperties.setProperty( BufferTransp, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( ShapeTransparency ) )
{
mDataDefinedProperties.setProperty( ShapeOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( ShapeTransparency ).asExpression() ) ) );
mDataDefinedProperties.setProperty( ShapeTransparency, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( ShadowTransparency ) )
{
mDataDefinedProperties.setProperty( ShadowOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( ShadowTransparency ).asExpression() ) ) );
mDataDefinedProperties.setProperty( ShadowTransparency, QgsProperty() );
}
}
void QgsPalLayerSettings::readXml( QDomElement &elem, const QgsReadWriteContext &context )
{
// text style
QDomElement textStyleElem = elem.firstChildElement( QStringLiteral( "text-style" ) );
fieldName = textStyleElem.attribute( QStringLiteral( "fieldName" ) );
isExpression = textStyleElem.attribute( QStringLiteral( "isExpression" ) ).toInt();
mFormat.readXml( elem, context );
previewBkgrdColor = QColor( textStyleElem.attribute( QStringLiteral( "previewBkgrdColor" ), QStringLiteral( "#ffffff" ) ) );
substitutions.readXml( textStyleElem.firstChildElement( QStringLiteral( "substitutions" ) ) );
useSubstitutions = textStyleElem.attribute( QStringLiteral( "useSubstitutions" ) ).toInt();
// text formatting
QDomElement textFormatElem = elem.firstChildElement( QStringLiteral( "text-format" ) );
wrapChar = textFormatElem.attribute( QStringLiteral( "wrapChar" ) );
multilineAlign = static_cast< MultiLineAlign >( textFormatElem.attribute( QStringLiteral( "multilineAlign" ), QString::number( MultiFollowPlacement ) ).toUInt() );
addDirectionSymbol = textFormatElem.attribute( QStringLiteral( "addDirectionSymbol" ) ).toInt();
leftDirectionSymbol = textFormatElem.attribute( QStringLiteral( "leftDirectionSymbol" ), QStringLiteral( "<" ) );
rightDirectionSymbol = textFormatElem.attribute( QStringLiteral( "rightDirectionSymbol" ), QStringLiteral( ">" ) );
reverseDirectionSymbol = textFormatElem.attribute( QStringLiteral( "reverseDirectionSymbol" ) ).toInt();
placeDirectionSymbol = static_cast< DirectionSymbols >( textFormatElem.attribute( QStringLiteral( "placeDirectionSymbol" ), QString::number( SymbolLeftRight ) ).toUInt() );
formatNumbers = textFormatElem.attribute( QStringLiteral( "formatNumbers" ) ).toInt();
decimals = textFormatElem.attribute( QStringLiteral( "decimals" ) ).toInt();
plusSign = textFormatElem.attribute( QStringLiteral( "plussign" ) ).toInt();
// placement
QDomElement placementElem = elem.firstChildElement( QStringLiteral( "placement" ) );
placement = static_cast< Placement >( placementElem.attribute( QStringLiteral( "placement" ) ).toInt() );
placementFlags = placementElem.attribute( QStringLiteral( "placementFlags" ) ).toUInt();
centroidWhole = placementElem.attribute( QStringLiteral( "centroidWhole" ), QStringLiteral( "0" ) ).toInt();
centroidInside = placementElem.attribute( QStringLiteral( "centroidInside" ), QStringLiteral( "0" ) ).toInt();
predefinedPositionOrder = QgsLabelingUtils::decodePredefinedPositionOrder( placementElem.attribute( QStringLiteral( "predefinedPositionOrder" ) ) );
if ( predefinedPositionOrder.isEmpty() )
predefinedPositionOrder = DEFAULT_PLACEMENT_ORDER;
fitInPolygonOnly = placementElem.attribute( QStringLiteral( "fitInPolygonOnly" ), QStringLiteral( "0" ) ).toInt();
dist = placementElem.attribute( QStringLiteral( "dist" ) ).toDouble();
distInMapUnits = placementElem.attribute( QStringLiteral( "distInMapUnits" ) ).toInt();
if ( !placementElem.hasAttribute( QStringLiteral( "distMapUnitScale" ) ) )
{
//fallback to older property
distMapUnitScale.minScale = placementElem.attribute( QStringLiteral( "distMapUnitMinScale" ), QStringLiteral( "0" ) ).toDouble();
distMapUnitScale.maxScale = placementElem.attribute( QStringLiteral( "distMapUnitMaxScale" ), QStringLiteral( "0" ) ).toDouble();
}
else
{
distMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( placementElem.attribute( QStringLiteral( "distMapUnitScale" ) ) );
}
offsetType = static_cast< OffsetType >( placementElem.attribute( QStringLiteral( "offsetType" ), QString::number( FromPoint ) ).toUInt() );
quadOffset = static_cast< QuadrantPosition >( placementElem.attribute( QStringLiteral( "quadOffset" ), QString::number( QuadrantOver ) ).toUInt() );
xOffset = placementElem.attribute( QStringLiteral( "xOffset" ), QStringLiteral( "0" ) ).toDouble();
yOffset = placementElem.attribute( QStringLiteral( "yOffset" ), QStringLiteral( "0" ) ).toDouble();
labelOffsetInMapUnits = placementElem.attribute( QStringLiteral( "labelOffsetInMapUnits" ), QStringLiteral( "1" ) ).toInt();
if ( !placementElem.hasAttribute( QStringLiteral( "labelOffsetMapUnitScale" ) ) )
{
//fallback to older property
labelOffsetMapUnitScale.minScale = placementElem.attribute( QStringLiteral( "labelOffsetMapUnitMinScale" ), QStringLiteral( "0" ) ).toDouble();
labelOffsetMapUnitScale.maxScale = placementElem.attribute( QStringLiteral( "labelOffsetMapUnitMaxScale" ), QStringLiteral( "0" ) ).toDouble();
}
else
{
labelOffsetMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( placementElem.attribute( QStringLiteral( "labelOffsetMapUnitScale" ) ) );
}
angleOffset = placementElem.attribute( QStringLiteral( "angleOffset" ), QStringLiteral( "0" ) ).toDouble();
preserveRotation = placementElem.attribute( QStringLiteral( "preserveRotation" ), QStringLiteral( "1" ) ).toInt();
maxCurvedCharAngleIn = placementElem.attribute( QStringLiteral( "maxCurvedCharAngleIn" ), QStringLiteral( "25" ) ).toDouble();
maxCurvedCharAngleOut = placementElem.attribute( QStringLiteral( "maxCurvedCharAngleOut" ), QStringLiteral( "-25" ) ).toDouble();
priority = placementElem.attribute( QStringLiteral( "priority" ) ).toInt();
repeatDistance = placementElem.attribute( QStringLiteral( "repeatDistance" ), QStringLiteral( "0" ) ).toDouble();
repeatDistanceUnit = static_cast< SizeUnit >( placementElem.attribute( QStringLiteral( "repeatDistanceUnit" ), QString::number( MM ) ).toUInt() );
if ( !placementElem.hasAttribute( QStringLiteral( "repeatDistanceMapUnitScale" ) ) )
{
//fallback to older property
repeatDistanceMapUnitScale.minScale = placementElem.attribute( QStringLiteral( "repeatDistanceMapUnitMinScale" ), QStringLiteral( "0" ) ).toDouble();
repeatDistanceMapUnitScale.maxScale = placementElem.attribute( QStringLiteral( "repeatDistanceMapUnitMaxScale" ), QStringLiteral( "0" ) ).toDouble();
}
else
{
repeatDistanceMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( placementElem.attribute( QStringLiteral( "repeatDistanceMapUnitScale" ) ) );
}
// rendering
QDomElement renderingElem = elem.firstChildElement( QStringLiteral( "rendering" ) );
drawLabels = renderingElem.attribute( QStringLiteral( "drawLabels" ), QStringLiteral( "1" ) ).toInt();
scaleMin = renderingElem.attribute( QStringLiteral( "scaleMin" ), QStringLiteral( "0" ) ).toInt();
scaleMax = renderingElem.attribute( QStringLiteral( "scaleMax" ), QStringLiteral( "0" ) ).toInt();
scaleVisibility = renderingElem.attribute( QStringLiteral( "scaleVisibility" ) ).toInt();
fontLimitPixelSize = renderingElem.attribute( QStringLiteral( "fontLimitPixelSize" ), QStringLiteral( "0" ) ).toInt();
fontMinPixelSize = renderingElem.attribute( QStringLiteral( "fontMinPixelSize" ), QStringLiteral( "0" ) ).toInt();
fontMaxPixelSize = renderingElem.attribute( QStringLiteral( "fontMaxPixelSize" ), QStringLiteral( "10000" ) ).toInt();
displayAll = renderingElem.attribute( QStringLiteral( "displayAll" ), QStringLiteral( "0" ) ).toInt();
upsidedownLabels = static_cast< UpsideDownLabels >( renderingElem.attribute( QStringLiteral( "upsidedownLabels" ), QString::number( Upright ) ).toUInt() );
labelPerPart = renderingElem.attribute( QStringLiteral( "labelPerPart" ) ).toInt();
mergeLines = renderingElem.attribute( QStringLiteral( "mergeLines" ) ).toInt();
minFeatureSize = renderingElem.attribute( QStringLiteral( "minFeatureSize" ) ).toDouble();
limitNumLabels = renderingElem.attribute( QStringLiteral( "limitNumLabels" ), QStringLiteral( "0" ) ).toInt();
maxNumLabels = renderingElem.attribute( QStringLiteral( "maxNumLabels" ), QStringLiteral( "2000" ) ).toInt();
obstacle = renderingElem.attribute( QStringLiteral( "obstacle" ), QStringLiteral( "1" ) ).toInt();
obstacleFactor = renderingElem.attribute( QStringLiteral( "obstacleFactor" ), QStringLiteral( "1" ) ).toDouble();
obstacleType = static_cast< ObstacleType >( renderingElem.attribute( QStringLiteral( "obstacleType" ), QString::number( PolygonInterior ) ).toUInt() );
zIndex = renderingElem.attribute( QStringLiteral( "zIndex" ), QStringLiteral( "0.0" ) ).toDouble();
QDomElement ddElem = elem.firstChildElement( QStringLiteral( "dd_properties" ) );
if ( !ddElem.isNull() )
{
mDataDefinedProperties.readXml( ddElem, sPropertyDefinitions );
}
else
{
// upgrade 2.x style dd project
mDataDefinedProperties.clear();
QDomElement ddElem = elem.firstChildElement( QStringLiteral( "data-defined" ) );
readOldDataDefinedPropertyMap( nullptr, &ddElem );
}
// upgrade older data defined settings
if ( mDataDefinedProperties.isActive( FontTransp ) )
{
mDataDefinedProperties.setProperty( FontOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( FontTransp ).asExpression() ) ) );
mDataDefinedProperties.setProperty( FontTransp, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( BufferTransp ) )
{
mDataDefinedProperties.setProperty( BufferOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( BufferTransp ).asExpression() ) ) );
mDataDefinedProperties.setProperty( BufferTransp, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( ShapeTransparency ) )
{
mDataDefinedProperties.setProperty( ShapeOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( ShapeTransparency ).asExpression() ) ) );
mDataDefinedProperties.setProperty( ShapeTransparency, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( ShadowTransparency ) )
{
mDataDefinedProperties.setProperty( ShadowOpacity, QgsProperty::fromExpression( QStringLiteral( "100 - (%1)" ).arg( mDataDefinedProperties.property( ShadowTransparency ).asExpression() ) ) );
mDataDefinedProperties.setProperty( ShadowTransparency, QgsProperty() );
}
}
QDomElement QgsPalLayerSettings::writeXml( QDomDocument &doc, const QgsReadWriteContext &context )
{
QDomElement textStyleElem = mFormat.writeXml( doc, context );
// text style
textStyleElem.setAttribute( QStringLiteral( "fieldName" ), fieldName );
textStyleElem.setAttribute( QStringLiteral( "isExpression" ), isExpression );
textStyleElem.setAttribute( QStringLiteral( "previewBkgrdColor" ), previewBkgrdColor.name() );
QDomElement replacementElem = doc.createElement( QStringLiteral( "substitutions" ) );
substitutions.writeXml( replacementElem, doc );
textStyleElem.appendChild( replacementElem );
textStyleElem.setAttribute( QStringLiteral( "useSubstitutions" ), useSubstitutions );
// text formatting
QDomElement textFormatElem = doc.createElement( QStringLiteral( "text-format" ) );
textFormatElem.setAttribute( QStringLiteral( "wrapChar" ), wrapChar );
textFormatElem.setAttribute( QStringLiteral( "multilineAlign" ), static_cast< unsigned int >( multilineAlign ) );
textFormatElem.setAttribute( QStringLiteral( "addDirectionSymbol" ), addDirectionSymbol );
textFormatElem.setAttribute( QStringLiteral( "leftDirectionSymbol" ), leftDirectionSymbol );
textFormatElem.setAttribute( QStringLiteral( "rightDirectionSymbol" ), rightDirectionSymbol );
textFormatElem.setAttribute( QStringLiteral( "reverseDirectionSymbol" ), reverseDirectionSymbol );
textFormatElem.setAttribute( QStringLiteral( "placeDirectionSymbol" ), static_cast< unsigned int >( placeDirectionSymbol ) );
textFormatElem.setAttribute( QStringLiteral( "formatNumbers" ), formatNumbers );
textFormatElem.setAttribute( QStringLiteral( "decimals" ), decimals );
textFormatElem.setAttribute( QStringLiteral( "plussign" ), plusSign );
// placement
QDomElement placementElem = doc.createElement( QStringLiteral( "placement" ) );
placementElem.setAttribute( QStringLiteral( "placement" ), placement );
placementElem.setAttribute( QStringLiteral( "placementFlags" ), static_cast< unsigned int >( placementFlags ) );
placementElem.setAttribute( QStringLiteral( "centroidWhole" ), centroidWhole );
placementElem.setAttribute( QStringLiteral( "centroidInside" ), centroidInside );
placementElem.setAttribute( QStringLiteral( "predefinedPositionOrder" ), QgsLabelingUtils::encodePredefinedPositionOrder( predefinedPositionOrder ) );
placementElem.setAttribute( QStringLiteral( "fitInPolygonOnly" ), fitInPolygonOnly );
placementElem.setAttribute( QStringLiteral( "dist" ), dist );
placementElem.setAttribute( QStringLiteral( "distInMapUnits" ), distInMapUnits );
placementElem.setAttribute( QStringLiteral( "distMapUnitScale" ), QgsSymbolLayerUtils::encodeMapUnitScale( distMapUnitScale ) );
placementElem.setAttribute( QStringLiteral( "offsetType" ), static_cast< unsigned int >( offsetType ) );
placementElem.setAttribute( QStringLiteral( "quadOffset" ), static_cast< unsigned int >( quadOffset ) );
placementElem.setAttribute( QStringLiteral( "xOffset" ), xOffset );
placementElem.setAttribute( QStringLiteral( "yOffset" ), yOffset );
placementElem.setAttribute( QStringLiteral( "labelOffsetInMapUnits" ), labelOffsetInMapUnits );
placementElem.setAttribute( QStringLiteral( "labelOffsetMapUnitScale" ), QgsSymbolLayerUtils::encodeMapUnitScale( labelOffsetMapUnitScale ) );
placementElem.setAttribute( QStringLiteral( "angleOffset" ), angleOffset );
placementElem.setAttribute( QStringLiteral( "preserveRotation" ), preserveRotation );
placementElem.setAttribute( QStringLiteral( "maxCurvedCharAngleIn" ), maxCurvedCharAngleIn );
placementElem.setAttribute( QStringLiteral( "maxCurvedCharAngleOut" ), maxCurvedCharAngleOut );
placementElem.setAttribute( QStringLiteral( "priority" ), priority );
placementElem.setAttribute( QStringLiteral( "repeatDistance" ), repeatDistance );
placementElem.setAttribute( QStringLiteral( "repeatDistanceUnit" ), repeatDistanceUnit );
placementElem.setAttribute( QStringLiteral( "repeatDistanceMapUnitScale" ), QgsSymbolLayerUtils::encodeMapUnitScale( repeatDistanceMapUnitScale ) );
// rendering
QDomElement renderingElem = doc.createElement( QStringLiteral( "rendering" ) );
renderingElem.setAttribute( QStringLiteral( "drawLabels" ), drawLabels );
renderingElem.setAttribute( QStringLiteral( "scaleVisibility" ), scaleVisibility );
renderingElem.setAttribute( QStringLiteral( "scaleMin" ), scaleMin );
renderingElem.setAttribute( QStringLiteral( "scaleMax" ), scaleMax );
renderingElem.setAttribute( QStringLiteral( "fontLimitPixelSize" ), fontLimitPixelSize );
renderingElem.setAttribute( QStringLiteral( "fontMinPixelSize" ), fontMinPixelSize );
renderingElem.setAttribute( QStringLiteral( "fontMaxPixelSize" ), fontMaxPixelSize );
renderingElem.setAttribute( QStringLiteral( "displayAll" ), displayAll );
renderingElem.setAttribute( QStringLiteral( "upsidedownLabels" ), static_cast< unsigned int >( upsidedownLabels ) );
renderingElem.setAttribute( QStringLiteral( "labelPerPart" ), labelPerPart );
renderingElem.setAttribute( QStringLiteral( "mergeLines" ), mergeLines );
renderingElem.setAttribute( QStringLiteral( "minFeatureSize" ), minFeatureSize );
renderingElem.setAttribute( QStringLiteral( "limitNumLabels" ), limitNumLabels );
renderingElem.setAttribute( QStringLiteral( "maxNumLabels" ), maxNumLabels );
renderingElem.setAttribute( QStringLiteral( "obstacle" ), obstacle );
renderingElem.setAttribute( QStringLiteral( "obstacleFactor" ), obstacleFactor );
renderingElem.setAttribute( QStringLiteral( "obstacleType" ), static_cast< unsigned int >( obstacleType ) );
renderingElem.setAttribute( QStringLiteral( "zIndex" ), zIndex );
QDomElement ddElem = doc.createElement( QStringLiteral( "dd_properties" ) );
mDataDefinedProperties.writeXml( ddElem, sPropertyDefinitions );
QDomElement elem = doc.createElement( QStringLiteral( "settings" ) );
elem.appendChild( textStyleElem );
elem.appendChild( textFormatElem );
elem.appendChild( placementElem );
elem.appendChild( renderingElem );
elem.appendChild( ddElem );
return elem;
}
bool QgsPalLayerSettings::checkMinimumSizeMM( const QgsRenderContext &ct, const QgsGeometry &geom, double minSize ) const
{
return QgsPalLabeling::checkMinimumSizeMM( ct, &geom, minSize );
}
void QgsPalLayerSettings::calculateLabelSize( const QFontMetricsF *fm, QString text, double &labelX, double &labelY, QgsFeature *f, QgsRenderContext *context )
{
if ( !fm || !f )
{
return;
}
//try to keep < 2.12 API - handle no passed render context
std::unique_ptr< QgsRenderContext > scopedRc;
if ( !context )
{
scopedRc.reset( new QgsRenderContext() );
if ( f )
scopedRc->expressionContext().setFeature( *f );
}
QgsRenderContext *rc = context ? context : scopedRc.get();
QString wrapchr = wrapChar;
double multilineH = mFormat.lineHeight();
bool addDirSymb = addDirectionSymbol;
QString leftDirSymb = leftDirectionSymbol;
QString rightDirSymb = rightDirectionSymbol;
QgsPalLayerSettings::DirectionSymbols placeDirSymb = placeDirectionSymbol;
if ( f == mCurFeat ) // called internally, use any stored data defined values
{
if ( dataDefinedValues.contains( QgsPalLayerSettings::MultiLineWrapChar ) )
{
wrapchr = dataDefinedValues.value( QgsPalLayerSettings::MultiLineWrapChar ).toString();
}
if ( dataDefinedValues.contains( QgsPalLayerSettings::MultiLineHeight ) )
{
multilineH = dataDefinedValues.value( QgsPalLayerSettings::MultiLineHeight ).toDouble();
}
if ( dataDefinedValues.contains( QgsPalLayerSettings::DirSymbDraw ) )
{
addDirSymb = dataDefinedValues.value( QgsPalLayerSettings::DirSymbDraw ).toBool();
}
if ( addDirSymb )
{
if ( dataDefinedValues.contains( QgsPalLayerSettings::DirSymbLeft ) )
{
leftDirSymb = dataDefinedValues.value( QgsPalLayerSettings::DirSymbLeft ).toString();
}
if ( dataDefinedValues.contains( QgsPalLayerSettings::DirSymbRight ) )
{
rightDirSymb = dataDefinedValues.value( QgsPalLayerSettings::DirSymbRight ).toString();
}
if ( dataDefinedValues.contains( QgsPalLayerSettings::DirSymbPlacement ) )
{
placeDirSymb = static_cast< QgsPalLayerSettings::DirectionSymbols >( dataDefinedValues.value( QgsPalLayerSettings::DirSymbPlacement ).toInt() );
}
}
}
else // called externally with passed-in feature, evaluate data defined
{
rc->expressionContext().setOriginalValueVariable( wrapChar );
wrapchr = mDataDefinedProperties.value( QgsPalLayerSettings::MultiLineWrapChar, rc->expressionContext(), wrapchr ).toString();
rc->expressionContext().setOriginalValueVariable( multilineH );
multilineH = mDataDefinedProperties.valueAsDouble( QgsPalLayerSettings::MultiLineHeight, rc->expressionContext(), multilineH );
rc->expressionContext().setOriginalValueVariable( addDirSymb );
addDirSymb = mDataDefinedProperties.valueAsBool( QgsPalLayerSettings::DirSymbDraw, rc->expressionContext(), addDirSymb );