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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 "qgsexception.h"
#include "qgsapplication.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 <QDesktopWidget>
#include <QTextBoundaryFinder>
#include "diagram/qgsdiagram.h"
#include "qgsdiagramrenderer.h"
#include "qgsfontutils.h"
#include "qgslabelsearchtree.h"
#include "qgsexpression.h"
#include "qgslabelingengine.h"
#include "qgsvectorlayerlabeling.h"
#include "qgstextrendererutils.h"
#include "qgstextfragment.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 "qgscurvepolygon.h"
#include "qgsmessagelog.h"
#include "qgsgeometrycollection.h"
#include "callouts/qgscallout.h"
#include "callouts/qgscalloutsregistry.h"
#include "qgsvectortilelayer.h"
#include "qgsvectortilebasiclabeling.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...!)
*/
typedef QVector< QgsPalLayerSettings::PredefinedPointPosition > PredefinedPointPositionVector;
Q_GLOBAL_STATIC_WITH_ARGS( PredefinedPointPositionVector, 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;*/
Q_GLOBAL_STATIC( QgsPropertiesDefinition, sPropertyDefinitions )
void QgsPalLayerSettings::initPropertyDefinitions()
{
if ( !sPropertyDefinitions()->isEmpty() )
return;
const QString origin = QStringLiteral( "labeling" );
*sPropertyDefinitions() = QgsPropertiesDefinition
{
{ QgsPalLayerSettings::Size, QgsPropertyDefinition( "Size", QObject::tr( "Font size" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::Bold, QgsPropertyDefinition( "Bold", QObject::tr( "Bold style" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::Italic, QgsPropertyDefinition( "Italic", QObject::tr( "Italic style" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::Underline, QgsPropertyDefinition( "Underline", QObject::tr( "Draw underline" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::Color, QgsPropertyDefinition( "Color", QObject::tr( "Text color" ), QgsPropertyDefinition::ColorNoAlpha, origin ) },
{ QgsPalLayerSettings::Strikeout, QgsPropertyDefinition( "Strikeout", QObject::tr( "Draw strikeout" ), QgsPropertyDefinition::Boolean, origin ) },
{
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]" ), origin )
},
{
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" ), origin )
},
{ QgsPalLayerSettings::FontSizeUnit, QgsPropertyDefinition( "FontSizeUnit", QObject::tr( "Font size units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::FontTransp, QgsPropertyDefinition( "FontTransp", QObject::tr( "Text transparency" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::FontOpacity, QgsPropertyDefinition( "FontOpacity", QObject::tr( "Text opacity" ), QgsPropertyDefinition::Opacity, origin ) },
{ 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>Title</b>|<b>Capitalize</b>]" ), origin ) },
{ QgsPalLayerSettings::FontLetterSpacing, QgsPropertyDefinition( "FontLetterSpacing", QObject::tr( "Letter spacing" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::FontWordSpacing, QgsPropertyDefinition( "FontWordSpacing", QObject::tr( "Word spacing" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::FontBlendMode, QgsPropertyDefinition( "FontBlendMode", QObject::tr( "Text blend mode" ), QgsPropertyDefinition::BlendMode, origin ) },
{ QgsPalLayerSettings::MultiLineWrapChar, QgsPropertyDefinition( "MultiLineWrapChar", QObject::tr( "Wrap character" ), QgsPropertyDefinition::String, origin ) },
{ QgsPalLayerSettings::AutoWrapLength, QgsPropertyDefinition( "AutoWrapLength", QObject::tr( "Automatic word wrap line length" ), QgsPropertyDefinition::IntegerPositive, origin ) },
{ QgsPalLayerSettings::MultiLineHeight, QgsPropertyDefinition( "MultiLineHeight", QObject::tr( "Line height" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ 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>]", origin ) },
{ QgsPalLayerSettings::TextOrientation, QgsPropertyDefinition( "TextOrientation", QgsPropertyDefinition::DataTypeString, QObject::tr( "Text orientation" ), QObject::tr( "string " ) + "[<b>horizontal</b>|<b>vertical</b>]", origin ) },
{ QgsPalLayerSettings::DirSymbDraw, QgsPropertyDefinition( "DirSymbDraw", QObject::tr( "Draw direction symbol" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::DirSymbLeft, QgsPropertyDefinition( "DirSymbLeft", QObject::tr( "Left direction symbol" ), QgsPropertyDefinition::String, origin ) },
{ QgsPalLayerSettings::DirSymbRight, QgsPropertyDefinition( "DirSymbRight", QObject::tr( "Right direction symbol" ), QgsPropertyDefinition::String, origin ) },
{ QgsPalLayerSettings::DirSymbPlacement, QgsPropertyDefinition( "DirSymbPlacement", QgsPropertyDefinition::DataTypeString, QObject::tr( "Direction symbol placement" ), QObject::tr( "string " ) + "[<b>LeftRight</b>|<b>Above</b>|<b>Below</b>]", origin ) },
{ QgsPalLayerSettings::DirSymbReverse, QgsPropertyDefinition( "DirSymbReverse", QObject::tr( "Reverse direction symbol" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::NumFormat, QgsPropertyDefinition( "NumFormat", QObject::tr( "Format as number" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::NumDecimals, QgsPropertyDefinition( "NumDecimals", QObject::tr( "Number of decimal places" ), QgsPropertyDefinition::IntegerPositive, origin ) },
{ QgsPalLayerSettings::NumPlusSign, QgsPropertyDefinition( "NumPlusSign", QObject::tr( "Draw + sign" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::BufferDraw, QgsPropertyDefinition( "BufferDraw", QObject::tr( "Draw buffer" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::BufferSize, QgsPropertyDefinition( "BufferSize", QObject::tr( "Symbol size" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::BufferUnit, QgsPropertyDefinition( "BufferUnit", QObject::tr( "Buffer units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::BufferColor, QgsPropertyDefinition( "BufferColor", QObject::tr( "Buffer color" ), QgsPropertyDefinition::ColorNoAlpha, origin ) },
{ QgsPalLayerSettings::BufferTransp, QgsPropertyDefinition( "BufferTransp", QObject::tr( "Buffer transparency" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::BufferOpacity, QgsPropertyDefinition( "BufferOpacity", QObject::tr( "Buffer opacity" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::BufferJoinStyle, QgsPropertyDefinition( "BufferJoinStyle", QObject::tr( "Buffer join style" ), QgsPropertyDefinition::PenJoinStyle, origin ) },
{ QgsPalLayerSettings::BufferBlendMode, QgsPropertyDefinition( "BufferBlendMode", QObject::tr( "Buffer blend mode" ), QgsPropertyDefinition::BlendMode, origin ) },
{ QgsPalLayerSettings::MaskEnabled, QgsPropertyDefinition( "MaskEnabled", QObject::tr( "Enable mask" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::MaskBufferSize, QgsPropertyDefinition( "MaskBufferSize", QObject::tr( "Mask buffer size" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::MaskBufferUnit, QgsPropertyDefinition( "MaskBufferUnit", QObject::tr( "Mask buffer unit" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::MaskOpacity, QgsPropertyDefinition( "MaskOpacity", QObject::tr( "Mask opacity" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::MaskJoinStyle, QgsPropertyDefinition( "MaskJoinStyle", QObject::tr( "Mask join style" ), QgsPropertyDefinition::PenJoinStyle, origin ) },
{ QgsPalLayerSettings::ShapeDraw, QgsPropertyDefinition( "ShapeDraw", QObject::tr( "Draw shape" ), QgsPropertyDefinition::Boolean, origin ) },
{
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>]" ), origin )
},
{ QgsPalLayerSettings::ShapeSVGFile, QgsPropertyDefinition( "ShapeSVGFile", QObject::tr( "Shape SVG path" ), QgsPropertyDefinition::SvgPath, origin ) },
{ QgsPalLayerSettings::ShapeSizeType, QgsPropertyDefinition( "ShapeSizeType", QgsPropertyDefinition::DataTypeString, QObject::tr( "Shape size type" ), QObject::tr( "string " ) + "[<b>Buffer</b>|<b>Fixed</b>]", origin ) },
{ QgsPalLayerSettings::ShapeSizeX, QgsPropertyDefinition( "ShapeSizeX", QObject::tr( "Shape size (X)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::ShapeSizeY, QgsPropertyDefinition( "ShapeSizeY", QObject::tr( "Shape size (Y)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::ShapeSizeUnits, QgsPropertyDefinition( "ShapeSizeUnits", QObject::tr( "Shape size units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::ShapeRotationType, QgsPropertyDefinition( "ShapeRotationType", QgsPropertyDefinition::DataTypeString, QObject::tr( "Shape rotation type" ), QObject::tr( "string " ) + "[<b>Sync</b>|<b>Offset</b>|<b>Fixed</b>]", origin ) },
{ QgsPalLayerSettings::ShapeRotation, QgsPropertyDefinition( "ShapeRotation", QObject::tr( "Shape rotation" ), QgsPropertyDefinition::Rotation, origin ) },
{ QgsPalLayerSettings::ShapeOffset, QgsPropertyDefinition( "ShapeOffset", QObject::tr( "Shape offset" ), QgsPropertyDefinition::Offset, origin ) },
{ QgsPalLayerSettings::ShapeOffsetUnits, QgsPropertyDefinition( "ShapeOffsetUnits", QObject::tr( "Shape offset units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::ShapeRadii, QgsPropertyDefinition( "ShapeRadii", QObject::tr( "Shape radii" ), QgsPropertyDefinition::Size2D, origin ) },
{ QgsPalLayerSettings::ShapeRadiiUnits, QgsPropertyDefinition( "ShapeRadiiUnits", QObject::tr( "Symbol radii units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::ShapeTransparency, QgsPropertyDefinition( "ShapeTransparency", QObject::tr( "Shape transparency" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::ShapeOpacity, QgsPropertyDefinition( "ShapeOpacity", QObject::tr( "Shape opacity" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::ShapeBlendMode, QgsPropertyDefinition( "ShapeBlendMode", QObject::tr( "Shape blend mode" ), QgsPropertyDefinition::BlendMode, origin ) },
{ QgsPalLayerSettings::ShapeFillColor, QgsPropertyDefinition( "ShapeFillColor", QObject::tr( "Shape fill color" ), QgsPropertyDefinition::ColorWithAlpha, origin ) },
{ QgsPalLayerSettings::ShapeStrokeColor, QgsPropertyDefinition( "ShapeBorderColor", QObject::tr( "Shape stroke color" ), QgsPropertyDefinition::ColorWithAlpha, origin ) },
{ QgsPalLayerSettings::ShapeStrokeWidth, QgsPropertyDefinition( "ShapeBorderWidth", QObject::tr( "Shape stroke width" ), QgsPropertyDefinition::StrokeWidth, origin ) },
{ QgsPalLayerSettings::ShapeStrokeWidthUnits, QgsPropertyDefinition( "ShapeBorderWidthUnits", QObject::tr( "Shape stroke width units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::ShapeJoinStyle, QgsPropertyDefinition( "ShapeJoinStyle", QObject::tr( "Shape join style" ), QgsPropertyDefinition::PenJoinStyle, origin ) },
{ QgsPalLayerSettings::ShadowDraw, QgsPropertyDefinition( "ShadowDraw", QObject::tr( "Draw shadow" ), QgsPropertyDefinition::Boolean, origin ) },
{
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>]" ), origin )
},
{ QgsPalLayerSettings::ShadowOffsetAngle, QgsPropertyDefinition( "ShadowOffsetAngle", QObject::tr( "Shadow offset angle" ), QgsPropertyDefinition::Rotation, origin ) },
{ QgsPalLayerSettings::ShadowOffsetDist, QgsPropertyDefinition( "ShadowOffsetDist", QObject::tr( "Shadow offset distance" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::ShadowOffsetUnits, QgsPropertyDefinition( "ShadowOffsetUnits", QObject::tr( "Shadow offset units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::ShadowRadius, QgsPropertyDefinition( "ShadowRadius", QObject::tr( "Shadow blur radius" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::ShadowRadiusUnits, QgsPropertyDefinition( "ShadowRadiusUnits", QObject::tr( "Shadow blur units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::ShadowTransparency, QgsPropertyDefinition( "ShadowTransparency", QObject::tr( "Shadow transparency" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::ShadowOpacity, QgsPropertyDefinition( "ShadowOpacity", QObject::tr( "Shadow opacity" ), QgsPropertyDefinition::Opacity, origin ) },
{ QgsPalLayerSettings::ShadowScale, QgsPropertyDefinition( "ShadowScale", QObject::tr( "Shadow scale" ), QgsPropertyDefinition::IntegerPositive, origin ) },
{ QgsPalLayerSettings::ShadowColor, QgsPropertyDefinition( "ShadowColor", QObject::tr( "Shadow color" ), QgsPropertyDefinition::ColorNoAlpha, origin ) },
{ QgsPalLayerSettings::ShadowBlendMode, QgsPropertyDefinition( "ShadowBlendMode", QObject::tr( "Shadow blend mode" ), QgsPropertyDefinition::BlendMode, origin ) },
{ QgsPalLayerSettings::CentroidWhole, QgsPropertyDefinition( "CentroidWhole", QgsPropertyDefinition::DataTypeString, QObject::tr( "Centroid of whole shape" ), QObject::tr( "string " ) + "[<b>Visible</b>|<b>Whole</b>]", origin ) },
{
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]" ), origin )
},
{ QgsPalLayerSettings::OffsetXY, QgsPropertyDefinition( "OffsetXY", QObject::tr( "Offset" ), QgsPropertyDefinition::Offset, origin ) },
{ QgsPalLayerSettings::OffsetUnits, QgsPropertyDefinition( "OffsetUnits", QObject::tr( "Offset units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::LabelDistance, QgsPropertyDefinition( "LabelDistance", QObject::tr( "Label distance" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::DistanceUnits, QgsPropertyDefinition( "DistanceUnits", QObject::tr( "Label distance units" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::OffsetRotation, QgsPropertyDefinition( "OffsetRotation", QObject::tr( "Offset rotation" ), QgsPropertyDefinition::Rotation, origin ) },
{ 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]" ), origin ) },
{ QgsPalLayerSettings::RepeatDistance, QgsPropertyDefinition( "RepeatDistance", QObject::tr( "Repeat distance" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::RepeatDistanceUnit, QgsPropertyDefinition( "RepeatDistanceUnit", QObject::tr( "Repeat distance unit" ), QgsPropertyDefinition::RenderUnits, origin ) },
{ QgsPalLayerSettings::OverrunDistance, QgsPropertyDefinition( "OverrunDistance", QObject::tr( "Overrun distance" ), QgsPropertyDefinition::DoublePositive, origin ) },
{ QgsPalLayerSettings::LineAnchorPercent, QgsPropertyDefinition( "LineAnchorPercent", QObject::tr( "Line anchor percentage, as fraction from 0.0 to 1.0" ), QgsPropertyDefinition::Double0To1, origin ) },
{ QgsPalLayerSettings::Priority, QgsPropertyDefinition( "Priority", QgsPropertyDefinition::DataTypeNumeric, QObject::tr( "Label priority" ), QObject::tr( "double [0.0-10.0]" ), origin ) },
{ QgsPalLayerSettings::IsObstacle, QgsPropertyDefinition( "IsObstacle", QObject::tr( "Feature is a label obstacle" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::ObstacleFactor, QgsPropertyDefinition( "ObstacleFactor", QgsPropertyDefinition::DataTypeNumeric, QObject::tr( "Obstacle factor" ), QObject::tr( "double [0.0-10.0]" ), origin ) },
{
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]" ), origin )
},
{
QgsPalLayerSettings::LinePlacementOptions, QgsPropertyDefinition( "LinePlacementFlags", QgsPropertyDefinition::DataTypeString, QObject::tr( "Line placement options" ), QObject::tr( "Comma separated list of placement options<br>" )
+ QStringLiteral( "[<b>OL</b>=On line|<b>AL</b>=Above line|<b>BL</b>=Below line|<br>"
"<b>LO</b>=Respect line orientation]" ), origin )
},
{ QgsPalLayerSettings::PolygonLabelOutside, QgsPropertyDefinition( "PolygonLabelOutside", QgsPropertyDefinition::DataTypeString, QObject::tr( "Label outside polygons" ), QObject::tr( "string " ) + "[<b>yes</b> (allow placing outside)|<b>no</b> (never place outside)|<b>force</b> (always place outside)]", origin ) },
{ QgsPalLayerSettings::PositionX, QgsPropertyDefinition( "PositionX", QObject::tr( "Position (X)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::PositionY, QgsPropertyDefinition( "PositionY", QObject::tr( "Position (Y)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::Hali, QgsPropertyDefinition( "Hali", QgsPropertyDefinition::DataTypeString, QObject::tr( "Horizontal alignment" ), QObject::tr( "string " ) + "[<b>Left</b>|<b>Center</b>|<b>Right</b>]", origin ) },
{
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>]" ), origin )
},
{ QgsPalLayerSettings::Rotation, QgsPropertyDefinition( "Rotation", QObject::tr( "Label rotation (deprecated)" ), QgsPropertyDefinition::Rotation, origin ) },
{ QgsPalLayerSettings::LabelRotation, QgsPropertyDefinition( "LabelRotation", QObject::tr( "Label rotation" ), QgsPropertyDefinition::Rotation, origin ) },
{ QgsPalLayerSettings::ScaleVisibility, QgsPropertyDefinition( "ScaleVisibility", QObject::tr( "Scale based visibility" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::MinScale, QgsPropertyDefinition( "MinScale", QObject::tr( "Minimum scale (denominator)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::MaxScale, QgsPropertyDefinition( "MaxScale", QObject::tr( "Maximum scale (denominator)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::MinimumScale, QgsPropertyDefinition( "MinimumScale", QObject::tr( "Minimum scale (denominator)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::MaximumScale, QgsPropertyDefinition( "MaximumScale", QObject::tr( "Maximum scale (denominator)" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::FontLimitPixel, QgsPropertyDefinition( "FontLimitPixel", QObject::tr( "Limit font pixel size" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::FontMinPixel, QgsPropertyDefinition( "FontMinPixel", QObject::tr( "Minimum pixel size" ), QgsPropertyDefinition::IntegerPositive, origin ) },
{ QgsPalLayerSettings::FontMaxPixel, QgsPropertyDefinition( "FontMaxPixel", QObject::tr( "Maximum pixel size" ), QgsPropertyDefinition::IntegerPositive, origin ) },
{ QgsPalLayerSettings::ZIndex, QgsPropertyDefinition( "ZIndex", QObject::tr( "Label z-index" ), QgsPropertyDefinition::Double, origin ) },
{ QgsPalLayerSettings::Show, QgsPropertyDefinition( "Show", QObject::tr( "Show label" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::AlwaysShow, QgsPropertyDefinition( "AlwaysShow", QObject::tr( "Always show label" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::CalloutDraw, QgsPropertyDefinition( "CalloutDraw", QObject::tr( "Draw callout" ), QgsPropertyDefinition::Boolean, origin ) },
{ QgsPalLayerSettings::LabelAllParts, QgsPropertyDefinition( "LabelAllParts", QObject::tr( "Label all parts" ), QgsPropertyDefinition::Boolean, origin ) },
};
}
Q_NOWARN_DEPRECATED_PUSH // because of deprecated members
QgsPalLayerSettings::QgsPalLayerSettings()
: predefinedPositionOrder( *DEFAULT_PLACEMENT_ORDER() )
, mCallout( QgsApplication::calloutRegistry()->defaultCallout() )
{
initPropertyDefinitions();
}
Q_NOWARN_DEPRECATED_POP
Q_NOWARN_DEPRECATED_PUSH // because of deprecated members
QgsPalLayerSettings::QgsPalLayerSettings( const QgsPalLayerSettings &s )
: fieldIndex( 0 )
, mDataDefinedProperties( s.mDataDefinedProperties )
{
*this = s;
}
Q_NOWARN_DEPRECATED_POP
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;
Q_NOWARN_DEPRECATED_PUSH
previewBkgrdColor = s.previewBkgrdColor;
Q_NOWARN_DEPRECATED_POP
substitutions = s.substitutions;
useSubstitutions = s.useSubstitutions;
// text formatting
wrapChar = s.wrapChar;
autoWrapLength = s.autoWrapLength;
useMaxLineLengthForAutoWrap = s.useMaxLineLengthForAutoWrap;
multilineAlign = s.multilineAlign;
formatNumbers = s.formatNumbers;
decimals = s.decimals;
plusSign = s.plusSign;
// placement
placement = s.placement;
mPolygonPlacementFlags = s.mPolygonPlacementFlags;
centroidWhole = s.centroidWhole;
centroidInside = s.centroidInside;
predefinedPositionOrder = s.predefinedPositionOrder;
fitInPolygonOnly = s.fitInPolygonOnly;
quadOffset = s.quadOffset;
xOffset = s.xOffset;
yOffset = s.yOffset;
offsetUnits = s.offsetUnits;
labelOffsetMapUnitScale = s.labelOffsetMapUnitScale;
dist = s.dist;
offsetType = s.offsetType;
distUnits = s.distUnits;
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;
maximumScale = s.maximumScale;
minimumScale = s.minimumScale;
fontLimitPixelSize = s.fontLimitPixelSize;
fontMinPixelSize = s.fontMinPixelSize;
fontMaxPixelSize = s.fontMaxPixelSize;
displayAll = s.displayAll;
upsidedownLabels = s.upsidedownLabels;
labelPerPart = s.labelPerPart;
zIndex = s.zIndex;
mFormat = s.mFormat;
mDataDefinedProperties = s.mDataDefinedProperties;
mCallout.reset( s.mCallout ? s.mCallout->clone() : nullptr );
mLineSettings = s.mLineSettings;
mObstacleSettings = s.mObstacleSettings;
mThinningSettings = s.mThinningSettings;
geometryGenerator = s.geometryGenerator;
geometryGeneratorEnabled = s.geometryGeneratorEnabled;
geometryGeneratorType = s.geometryGeneratorType;
layerType = s.layerType;
return *this;
}
bool QgsPalLayerSettings::prepare( QgsRenderContext &context, QSet<QString> &attributeNames, const QgsFields &fields, const QgsMapSettings &mapSettings, const QgsCoordinateReferenceSystem &crs )
{
if ( drawLabels )
{
if ( fieldName.isEmpty() )
{
return false;
}
if ( isExpression )
{
QgsExpression exp( fieldName );
if ( exp.hasEvalError() )
{
QgsDebugMsgLevel( "Prepare error:" + exp.evalErrorString(), 4 );
return false;
}
}
else
{
// If we aren't an expression, we check to see if we can find the column.
if ( fields.lookupField( fieldName ) == -1 )
{
return false;
}
}
}
mCurFields = fields;
if ( drawLabels || mObstacleSettings.isObstacle() )
{
if ( drawLabels )
{
// add field indices for label's text, from expression or field
if ( isExpression )
{
// prepare expression for use in QgsPalLayerSettings::registerFeature()
QgsExpression *exp = getLabelExpression();
exp->prepare( &context.expressionContext() );
if ( exp->hasEvalError() )
{
QgsDebugMsgLevel( "Prepare error:" + exp->evalErrorString(), 4 );
}
const auto referencedColumns = exp->referencedColumns();
for ( const QString &name : referencedColumns )
{
attributeNames.insert( name );
}
}
else
{
attributeNames.insert( fieldName );
}
}
mDataDefinedProperties.prepare( context.expressionContext() );
// add field indices of data defined expression or field
attributeNames.unite( dataDefinedProperties().referencedFields( context.expressionContext() ) );
}
// NOW INITIALIZE QgsPalLayerSettings
// TODO: ideally these (non-configuration) members should get out of QgsPalLayerSettings to QgsVectorLayerLabelProvider::prepare
// (together with registerFeature() & related methods) and QgsPalLayerSettings just stores config
// save the pal layer to our layer context (with some additional info)
fieldIndex = fields.lookupField( fieldName );
xform = &mapSettings.mapToPixel();
ct = QgsCoordinateTransform();
if ( context.coordinateTransform().isValid() )
// this is context for layer rendering
ct = context.coordinateTransform();
else
{
// otherwise fall back to creating our own CT
ct = QgsCoordinateTransform( crs, mapSettings.destinationCrs(), mapSettings.transformContext() );
}
ptZero = xform->toMapCoordinates( 0, 0 );
ptOne = xform->toMapCoordinates( 1, 0 );
// rect for clipping
extentGeom = QgsGeometry::fromRect( mapSettings.visibleExtent() );
if ( !qgsDoubleNear( mapSettings.rotation(), 0.0 ) )
{
//PAL features are prerotated, so extent also needs to be unrotated
extentGeom.rotate( -mapSettings.rotation(), mapSettings.visibleExtent().center() );
}
mFeatsSendingToPal = 0;
if ( geometryGeneratorEnabled )
{
mGeometryGeneratorExpression = QgsExpression( geometryGenerator );
mGeometryGeneratorExpression.prepare( &context.expressionContext() );
if ( mGeometryGeneratorExpression.hasParserError() )
{
QgsMessageLog::logMessage( mGeometryGeneratorExpression.parserErrorString(), QObject::tr( "Labeling" ) );
return false;
}
const auto referencedColumns = mGeometryGeneratorExpression.referencedColumns();
for ( const QString &name : referencedColumns )
{
attributeNames.insert( name );
}
}
attributeNames.unite( mFormat.referencedFields( context ) );
if ( mCallout )
{
const auto referencedColumns = mCallout->referencedFields( context );
for ( const QString &name : referencedColumns )
{
attributeNames.insert( name );
}
}
return true;
}
QSet<QString> QgsPalLayerSettings::referencedFields( const QgsRenderContext &context ) const
{
QSet<QString> referenced;
if ( drawLabels )
{
if ( isExpression )
{
referenced.unite( QgsExpression( fieldName ).referencedColumns() );
}
else
{
referenced.insert( fieldName );
}
}
referenced.unite( mFormat.referencedFields( context ) );
// calling referencedFields() with ignoreContext=true because in our expression context
// we do not have valid QgsFields yet - because of that the field names from expressions
// wouldn't get reported
referenced.unite( mDataDefinedProperties.referencedFields( context.expressionContext(), true ) );
if ( geometryGeneratorEnabled )
{
QgsExpression geomGeneratorExpr( geometryGenerator );
referenced.unite( geomGeneratorExpr.referencedColumns() );
}
if ( mCallout )
{
referenced.unite( mCallout->referencedFields( context ) );
}
return referenced;
}
void QgsPalLayerSettings::startRender( QgsRenderContext &context )
{
if ( mRenderStarted )
{
qWarning( "Start render called for when a previous render was already underway!!" );
return;
}
if ( placement == QgsPalLayerSettings::Curved )
{
// force horizontal orientation, other orientation modes aren't unsupported for curved placement
mFormat.setOrientation( QgsTextFormat::HorizontalOrientation );
mDataDefinedProperties.property( QgsPalLayerSettings::TextOrientation ).setActive( false );
}
if ( mCallout )
{
mCallout->startRender( context );
}
mRenderStarted = true;
}
void QgsPalLayerSettings::stopRender( QgsRenderContext &context )
{
if ( !mRenderStarted )
{
qWarning( "Stop render called for QgsPalLayerSettings without a startRender call!" );
return;
}
if ( mCallout )
{
mCallout->stopRender( context );
}
mRenderStarted = false;
}
QgsPalLayerSettings::~QgsPalLayerSettings()
{
if ( mRenderStarted )
{
qWarning( "stopRender was not called on QgsPalLayerSettings object!" );
}
// 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;
}
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 << QString();
values << value; // all old-style values are only field names
newValue = values.join( QLatin1String( "~~" ) );
}
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();
Q_NOWARN_DEPRECATED_PUSH
previewBkgrdColor = QColor( layer->customProperty( QStringLiteral( "labeling/previewBkgrdColor" ), QVariant( "#ffffff" ) ).toString() );
Q_NOWARN_DEPRECATED_POP
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();
autoWrapLength = layer->customProperty( QStringLiteral( "labeling/autoWrapLength" ) ).toInt();
useMaxLineLengthForAutoWrap = layer->customProperty( QStringLiteral( "labeling/useMaxLineLengthForAutoWrap" ), QStringLiteral( "1" ) ).toBool();
multilineAlign = static_cast< MultiLineAlign >( layer->customProperty( QStringLiteral( "labeling/multilineAlign" ), QVariant( MultiFollowPlacement ) ).toUInt() );
mLineSettings.setAddDirectionSymbol( layer->customProperty( QStringLiteral( "labeling/addDirectionSymbol" ) ).toBool() );
mLineSettings.setLeftDirectionSymbol( layer->customProperty( QStringLiteral( "labeling/leftDirectionSymbol" ), QVariant( "<" ) ).toString() );
mLineSettings.setRightDirectionSymbol( layer->customProperty( QStringLiteral( "labeling/rightDirectionSymbol" ), QVariant( ">" ) ).toString() );
mLineSettings.setReverseDirectionSymbol( layer->customProperty( QStringLiteral( "labeling/reverseDirectionSymbol" ) ).toBool() );
mLineSettings.setDirectionSymbolPlacement( static_cast< QgsLabelLineSettings::DirectionSymbolPlacement >( layer->customProperty( QStringLiteral( "labeling/placeDirectionSymbol" ), QVariant( static_cast< int >( QgsLabelLineSettings::DirectionSymbolPlacement::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() );
mLineSettings.setPlacementFlags( static_cast< QgsLabeling::LinePlacementFlags >( 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();
distUnits = layer->customProperty( QStringLiteral( "labeling/distInMapUnits" ) ).toBool() ? QgsUnitTypes::RenderMapUnits : QgsUnitTypes::RenderMillimeters;
if ( layer->customProperty( QStringLiteral( "labeling/distMapUnitScale" ) ).toString().isEmpty() )
{
//fallback to older property
double oldMin = layer->customProperty( QStringLiteral( "labeling/distMapUnitMinScale" ), 0.0 ).toDouble();
distMapUnitScale.minScale = !qgsDoubleNear( oldMin, 0.0 ) ? 1.0 / oldMin : 0;
double oldMax = layer->customProperty( QStringLiteral( "labeling/distMapUnitMaxScale" ), 0.0 ).toDouble();
distMapUnitScale.maxScale = !qgsDoubleNear( oldMax, 0.0 ) ? 1.0 / oldMax : 0;
}
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();
if ( layer->customProperty( QStringLiteral( "labeling/labelOffsetInMapUnits" ), QVariant( true ) ).toBool() )
offsetUnits = QgsUnitTypes::RenderMapUnits;
else
offsetUnits = QgsUnitTypes::RenderMillimeters;
if ( layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitScale" ) ).toString().isEmpty() )
{
//fallback to older property
double oldMin = layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitMinScale" ), 0.0 ).toDouble();
labelOffsetMapUnitScale.minScale = !qgsDoubleNear( oldMin, 0.0 ) ? 1.0 / oldMin : 0;
double oldMax = layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitMaxScale" ), 0.0 ).toDouble();
labelOffsetMapUnitScale.maxScale = !qgsDoubleNear( oldMax, 0 ) ? 1.0 / oldMax : 0;
}
else
{
labelOffsetMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( layer->customProperty( QStringLiteral( "labeling/labelOffsetMapUnitScale" ) ).toString() );
}
QVariant tempAngle = layer->customProperty( QStringLiteral( "labeling/angleOffset" ), QVariant() );
if ( tempAngle.isValid() )
{
double oldAngle = layer->customProperty( QStringLiteral( "labeling/angleOffset" ), QVariant( 0.0 ) ).toDouble();
angleOffset = std::fmod( 360 - oldAngle, 360.0 );
}
else
{
angleOffset = layer->customProperty( QStringLiteral( "labeling/rotationAngle" ), 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();
switch ( layer->customProperty( QStringLiteral( "labeling/repeatDistanceUnit" ), QVariant( 1 ) ).toUInt() )
{
case 0:
repeatDistanceUnit = QgsUnitTypes::RenderPoints;
break;
case 1:
repeatDistanceUnit = QgsUnitTypes::RenderMillimeters;
break;
case 2:
repeatDistanceUnit = QgsUnitTypes::RenderMapUnits;
break;
case 3:
repeatDistanceUnit = QgsUnitTypes::RenderPercentage;
break;
}
if ( layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitScale" ) ).toString().isEmpty() )
{
//fallback to older property
double oldMin = layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitMinScale" ), 0.0 ).toDouble();
repeatDistanceMapUnitScale.minScale = !qgsDoubleNear( oldMin, 0 ) ? 1.0 / oldMin : 0;
double oldMax = layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitMaxScale" ), 0.0 ).toDouble();
repeatDistanceMapUnitScale.maxScale = !qgsDoubleNear( oldMax, 0 ) ? 1.0 / oldMax : 0;
}
else
{
repeatDistanceMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( layer->customProperty( QStringLiteral( "labeling/repeatDistanceMapUnitScale" ) ).toString() );
}
// rendering
double scalemn = layer->customProperty( QStringLiteral( "labeling/scaleMin" ), QVariant( 0 ) ).toDouble();
double scalemx = layer->customProperty( QStringLiteral( "labeling/scaleMax" ), QVariant( 0 ) ).toDouble();
// 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();
maximumScale = scalemn;
minimumScale = scalemx;
}
else if ( scalemn > 0 || scalemx > 0 )
{
scaleVisibility = true;
maximumScale = scalemn;
minimumScale = 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();
mLineSettings.setMergeLines( layer->customProperty( QStringLiteral( "labeling/mergeLines" ) ).toBool() );
mThinningSettings.setMinimumFeatureSize( layer->customProperty( QStringLiteral( "labeling/minFeatureSize" ) ).toDouble() );
mThinningSettings.setLimitNumberLabelsEnabled( layer->customProperty( QStringLiteral( "labeling/limitNumLabels" ), QVariant( false ) ).toBool() );
mThinningSettings.setMaximumNumberLabels( layer->customProperty( QStringLiteral( "labeling/maxNumLabels" ), QVariant( 2000 ) ).toInt() );
mObstacleSettings.setIsObstacle( layer->customProperty( QStringLiteral( "labeling/obstacle" ), QVariant( true ) ).toBool() );
mObstacleSettings.setFactor( layer->customProperty( QStringLiteral( "labeling/obstacleFactor" ), QVariant( 1.0 ) ).toDouble() );
mObstacleSettings.setType( static_cast< QgsLabelObstacleSettings::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() );
}
if ( mDataDefinedProperties.isActive( Rotation ) )
{
mDataDefinedProperties.setProperty( LabelRotation, QgsProperty::fromExpression( QStringLiteral( "360 - (%1)" ).arg( mDataDefinedProperties.property( Rotation ).asExpression() ) ) );
mDataDefinedProperties.setProperty( Rotation, QgsProperty() );
}
// older 2.x projects had min/max scale flipped - so change them here.
if ( mDataDefinedProperties.isActive( MinScale ) )
{
mDataDefinedProperties.setProperty( MaximumScale, mDataDefinedProperties.property( MinScale ) );
mDataDefinedProperties.setProperty( MinScale, QgsProperty() );
}
if ( mDataDefinedProperties.isActive( MaxScale ) )
{
mDataDefinedProperties.setProperty( MinimumScale, mDataDefinedProperties.property( MaxScale ) );
mDataDefinedProperties.setProperty( MaxScale, QgsProperty() );
}
}
void QgsPalLayerSettings::readXml( const 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 );
Q_NOWARN_DEPRECATED_PUSH
previewBkgrdColor = QColor( textStyleElem.attribute( QStringLiteral( "previewBkgrdColor" ), QStringLiteral( "#ffffff" ) ) );
Q_NOWARN_DEPRECATED_POP
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" ) );
autoWrapLength = textFormatElem.attribute( QStringLiteral( "autoWrapLength" ), QStringLiteral( "0" ) ).toInt();
useMaxLineLengthForAutoWrap = textFormatElem.attribute( QStringLiteral( "useMaxLineLengthForAutoWrap" ), QStringLiteral( "1" ) ).toInt();
multilineAlign = static_cast< MultiLineAlign >( textFormatElem.attribute( QStringLiteral( "multilineAlign" ), QString::number( MultiFollowPlacement ) ).toUInt() );
mLineSettings.setAddDirectionSymbol( textFormatElem.attribute( QStringLiteral( "addDirectionSymbol" ) ).toInt() );
mLineSettings.setLeftDirectionSymbol( textFormatElem.attribute( QStringLiteral( "leftDirectionSymbol" ), QStringLiteral( "<" ) ) );
mLineSettings.setRightDirectionSymbol( textFormatElem.attribute( QStringLiteral( "rightDirectionSymbol" ), QStringLiteral( ">" ) ) );
mLineSettings.setReverseDirectionSymbol( textFormatElem.attribute( QStringLiteral( "reverseDirectionSymbol" ) ).toInt() );
mLineSettings.setDirectionSymbolPlacement( static_cast< QgsLabelLineSettings::DirectionSymbolPlacement >( textFormatElem.attribute( QStringLiteral( "placeDirectionSymbol" ), QString::number( static_cast< int >( QgsLabelLineSettings::DirectionSymbolPlacement::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() );
mLineSettings.setPlacementFlags( static_cast< QgsLabeling::LinePlacementFlags >( placementElem.attribute( QStringLiteral( "placementFlags" ) ).toUInt() ) );
mPolygonPlacementFlags = static_cast< QgsLabeling::PolygonPlacementFlags >( placementElem.attribute( QStringLiteral( "polygonPlacementFlags" ), QString::number( static_cast< int >( QgsLabeling::PolygonPlacementFlag::AllowPlacementInsideOfPolygon ) ) ).toInt() );
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();
if ( !placementElem.hasAttribute( QStringLiteral( "distUnits" ) ) )
{
if ( placementElem.attribute( QStringLiteral( "distInMapUnits" ) ).toInt() )
distUnits = QgsUnitTypes::RenderMapUnits;
else
distUnits = QgsUnitTypes::RenderMillimeters;
}
else
{
distUnits = QgsUnitTypes::decodeRenderUnit( placementElem.attribute( QStringLiteral( "distUnits" ) ) );
}
if ( !placementElem.hasAttribute( QStringLiteral( "distMapUnitScale" ) ) )
{
//fallback to older property
double oldMin = placementElem.attribute( QStringLiteral( "distMapUnitMinScale" ), QStringLiteral( "0" ) ).toDouble();
distMapUnitScale.minScale = !qgsDoubleNear( oldMin, 0 ) ? 1.0 / oldMin : 0;
double oldMax = placementElem.attribute( QStringLiteral( "distMapUnitMaxScale" ), QStringLiteral( "0" ) ).toDouble();
distMapUnitScale.maxScale = !qgsDoubleNear( oldMax, 0 ) ? 1.0 / oldMax : 0;
}
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();
if ( !placementElem.hasAttribute( QStringLiteral( "offsetUnits" ) ) )
{
offsetUnits = placementElem.attribute( QStringLiteral( "labelOffsetInMapUnits" ), QStringLiteral( "1" ) ).toInt() ? QgsUnitTypes::RenderMapUnits : QgsUnitTypes::RenderMillimeters;
}
else
{
offsetUnits = QgsUnitTypes::decodeRenderUnit( placementElem.attribute( QStringLiteral( "offsetUnits" ) ) );
}
if ( !placementElem.hasAttribute( QStringLiteral( "labelOffsetMapUnitScale" ) ) )
{
//fallback to older property
double oldMin = placementElem.attribute( QStringLiteral( "labelOffsetMapUnitMinScale" ), QStringLiteral( "0" ) ).toDouble();
labelOffsetMapUnitScale.minScale = !qgsDoubleNear( oldMin, 0.0 ) ? 1.0 / oldMin : 0;
double oldMax = placementElem.attribute( QStringLiteral( "labelOffsetMapUnitMaxScale" ), QStringLiteral( "0" ) ).toDouble();
labelOffsetMapUnitScale.maxScale = !qgsDoubleNear( oldMax, 0.0 ) ? 1.0 / oldMax : 0;
}
else
{
labelOffsetMapUnitScale = QgsSymbolLayerUtils::decodeMapUnitScale( placementElem.attribute( QStringLiteral( "labelOffsetMapUnitScale" ) ) );
}
if ( placementElem.hasAttribute( QStringLiteral( "angleOffset" ) ) )
{
double oldAngle = placementElem.attribute( QStringLiteral( "angleOffset" ), QStringLiteral( "0" ) ).toDouble();
angleOffset = std::fmod( 360 - oldAngle, 360.0 );
}
else