QGIS API Documentation 3.43.0-Master (56aa1fd18d7)
qgssymbollayerutils.h
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1/***************************************************************************
2 qgssymbollayerutils.h
3 ---------------------
4 begin : November 2009
5 copyright : (C) 2009 by Martin Dobias
6 email : wonder dot sk at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16
17#ifndef QGSSYMBOLLAYERUTILS_H
18#define QGSSYMBOLLAYERUTILS_H
19
20#include "qgis_core.h"
21#include "qgis_sip.h"
22#include <QMap>
23#include <QFont>
24#include <QColor>
25#include <QPainter>
26#include "qgis.h"
27#include "qgsmapunitscale.h"
28#include "qgscolorramp.h"
29#include "qgsarrowsymbollayer.h"
30#include "qgssymbol.h"
31
32#include <QFile>
33
34#define FONTMARKER_CHR_FIX "~!_#!#_!~"
35
36class QgsExpression;
37class QgsPathResolver;
38class QgsReadWriteContext;
39class QgsSymbolLayer;
40
41typedef QMap<QString, QString> QgsStringMap;
42typedef QMap<QString, QgsSymbol * > QgsSymbolMap;
43typedef QList< QPair< QColor, QString > > QgsNamedColorList SIP_SKIP;
44
45class QDomDocument;
46class QDomElement;
47class QIcon;
48class QPixmap;
49class QPointF;
50class QSize;
51class QMimeData;
52class QgsFeatureRenderer;
53class QgsSymbolLayerId;
54
60class CORE_EXPORT QgsSymbolLayerUtils
61{
62 public:
63
64 static QString encodeColor( const QColor &color );
65 static QColor decodeColor( const QString &str );
66
67 static QString encodeSldAlpha( int alpha );
68 static int decodeSldAlpha( const QString &str );
69
70 static QString encodeSldFontStyle( QFont::Style style );
71 static QFont::Style decodeSldFontStyle( const QString &str );
72
73 static QString encodeSldFontWeight( int weight );
74 static int decodeSldFontWeight( const QString &str );
75
76 static QString encodePenStyle( Qt::PenStyle style );
77 static Qt::PenStyle decodePenStyle( const QString &str );
78
79 static QString encodePenJoinStyle( Qt::PenJoinStyle style );
80 static Qt::PenJoinStyle decodePenJoinStyle( const QString &str );
81
82 static QString encodePenCapStyle( Qt::PenCapStyle style );
83 static Qt::PenCapStyle decodePenCapStyle( const QString &str );
84
85 static QString encodeSldLineJoinStyle( Qt::PenJoinStyle style );
86 static Qt::PenJoinStyle decodeSldLineJoinStyle( const QString &str );
87
88 static QString encodeSldLineCapStyle( Qt::PenCapStyle style );
89 static Qt::PenCapStyle decodeSldLineCapStyle( const QString &str );
90
91 static QString encodeBrushStyle( Qt::BrushStyle style );
92 static Qt::BrushStyle decodeBrushStyle( const QString &str );
93
94 static QString encodeSldBrushStyle( Qt::BrushStyle style );
95 static Qt::BrushStyle decodeSldBrushStyle( const QString &str );
96
102 static Qgis::EndCapStyle penCapStyleToEndCapStyle( Qt::PenCapStyle style );
103
109 static Qgis::JoinStyle penJoinStyleToJoinStyle( Qt::PenJoinStyle style );
110
116 static bool hasSldSymbolizer( const QDomElement &element );
117
128 static Qgis::SymbolCoordinateReference decodeCoordinateReference( const QString &string, bool *ok SIP_OUT = nullptr );
129
137 static QString encodeCoordinateReference( Qgis::SymbolCoordinateReference coordinateReference );
138
143 static QgsArrowSymbolLayer::HeadType decodeArrowHeadType( const QVariant &value, bool *ok SIP_OUT = nullptr );
144
149 static QgsArrowSymbolLayer::ArrowType decodeArrowType( const QVariant &value, bool *ok SIP_OUT = nullptr );
150
161 static Qgis::MarkerClipMode decodeMarkerClipMode( const QString &string, bool *ok SIP_OUT = nullptr );
162
169 static QString encodeMarkerClipMode( Qgis::MarkerClipMode mode );
170
181 static Qgis::LineClipMode decodeLineClipMode( const QString &string, bool *ok SIP_OUT = nullptr );
182
189 static QString encodeLineClipMode( Qgis::LineClipMode mode );
190
196 static QString encodePoint( QPointF point );
197
203 static QPointF decodePoint( const QString &string );
204
217 static QPointF toPoint( const QVariant &value, bool *ok SIP_OUT = nullptr );
218
224 static QString encodeSize( QSizeF size );
225
231 static QSizeF decodeSize( const QString &string );
232
245 static QSizeF toSize( const QVariant &value, bool *ok SIP_OUT = nullptr );
246
247 static QString encodeMapUnitScale( const QgsMapUnitScale &mapUnitScale );
248 static QgsMapUnitScale decodeMapUnitScale( const QString &str );
249
250 static QString encodeRealVector( const QVector<qreal> &v );
251 static QVector<qreal> decodeRealVector( const QString &s );
252
253 static QString encodeSldRealVector( const QVector<qreal> &v );
254 static QVector<qreal> decodeSldRealVector( const QString &s );
255
263 static QString encodeSldUom( Qgis::RenderUnit unit, double *scaleFactor );
264
272 static Qgis::RenderUnit decodeSldUom( const QString &str, double *scaleFactor = nullptr );
273
280 static double sizeInPixelsFromSldUom( const QString &uom, double size );
281
287 static QString encodeScaleMethod( Qgis::ScaleMethod scaleMethod );
288
294 static Qgis::ScaleMethod decodeScaleMethod( const QString &str );
295
296 static QPainter::CompositionMode decodeBlendMode( const QString &s );
297
307 static QIcon symbolPreviewIcon( const QgsSymbol *symbol, QSize size, int padding = 0, QgsLegendPatchShape *shape = nullptr, const QgsScreenProperties &screen = QgsScreenProperties() );
308
321 static QPixmap symbolPreviewPixmap( const QgsSymbol *symbol, QSize size, int padding = 0, QgsRenderContext *customContext = nullptr, bool selected = false,
322 const QgsExpressionContext *expressionContext = nullptr,
323 const QgsLegendPatchShape *shape = nullptr,
324 const QgsScreenProperties &screen = QgsScreenProperties() );
325
336 static QPicture symbolLayerPreviewPicture( const QgsSymbolLayer *layer, Qgis::RenderUnit units, QSize size, const QgsMapUnitScale &scale = QgsMapUnitScale(), Qgis::SymbolType parentSymbolType = Qgis::SymbolType::Hybrid );
337
350 static QIcon symbolLayerPreviewIcon( const QgsSymbolLayer *layer, Qgis::RenderUnit u, QSize size, const QgsMapUnitScale &scale = QgsMapUnitScale(), Qgis::SymbolType parentSymbolType = Qgis::SymbolType::Hybrid, QgsMapLayer *mapLayer = nullptr, const QgsScreenProperties &screen = QgsScreenProperties() );
351
359 static QIcon colorRampPreviewIcon( QgsColorRamp *ramp, QSize size, int padding = 0 );
360
373 static QPixmap colorRampPreviewPixmap( QgsColorRamp *ramp, QSize size, int padding = 0, Qt::Orientation direction = Qt::Horizontal,
374 bool flipDirection = false, bool drawTransparentBackground = true );
375
376 static void drawStippledBackground( QPainter *painter, QRect rect );
377
382 static void drawVertexMarker( double x, double y, QPainter &p, Qgis::VertexMarkerType type, int markerSize );
383
385 static double estimateMaxSymbolBleed( QgsSymbol *symbol, const QgsRenderContext &context );
386
393 static std::unique_ptr< QgsSymbol > loadSymbol( const QDomElement &element, const QgsReadWriteContext &context );
394
403 template <class SymbolType> static std::unique_ptr< SymbolType > loadSymbol( const QDomElement &element, const QgsReadWriteContext &context ) SIP_SKIP
404 {
405 std::unique_ptr< QgsSymbol > tmpSymbol = QgsSymbolLayerUtils::loadSymbol( element, context );
406 const bool canCast = dynamic_cast<SymbolType *>( tmpSymbol.get() );
407
408 if ( canCast )
409 {
410 std::unique_ptr< SymbolType > castRes( static_cast<SymbolType *>( tmpSymbol.release() ) );
411 return castRes;
412 }
413 else
414 {
415 //could not cast
416 return nullptr;
417 }
418 }
419
421 static std::unique_ptr< QgsSymbolLayer > loadSymbolLayer( QDomElement &element, const QgsReadWriteContext &context );
422
424 static QDomElement saveSymbol( const QString &symbolName, const QgsSymbol *symbol, QDomDocument &doc, const QgsReadWriteContext &context );
425
430 static QString symbolProperties( QgsSymbol *symbol );
431
435 static bool createSymbolLayerListFromSld( QDomElement &element, Qgis::GeometryType geomType, QList<QgsSymbolLayer *> &layers );
436
440 static std::unique_ptr< QgsSymbolLayer > createFillLayerFromSld( QDomElement &element );
441
445 static std::unique_ptr< QgsSymbolLayer > createLineLayerFromSld( QDomElement &element );
446
450 static std::unique_ptr< QgsSymbolLayer > createMarkerLayerFromSld( QDomElement &element );
451
455 static bool convertPolygonSymbolizerToPointMarker( QDomElement &element, QList<QgsSymbolLayer *> &layerList );
456
462 static bool hasExternalGraphic( QDomElement &element );
463
470 static bool hasExternalGraphicV2( QDomElement &element, const QString format = QString() );
471
472 static bool hasWellKnownMark( QDomElement &element );
473
474 static bool needFontMarker( QDomElement &element );
475 static bool needSvgMarker( QDomElement &element );
476 static bool needEllipseMarker( QDomElement &element );
477 static bool needMarkerLine( QDomElement &element );
478 static bool needLinePatternFill( QDomElement &element );
479 static bool needPointPatternFill( QDomElement &element );
480 static bool needSvgFill( QDomElement &element );
481
488 static bool needRasterImageFill( QDomElement &element );
489
495 Q_DECL_DEPRECATED static void fillToSld( QDomDocument &doc, QDomElement &element,
496 Qt::BrushStyle brushStyle, const QColor &color = QColor() ) SIP_DEPRECATED;
497
503 static void fillToSld( QDomDocument &doc, QDomElement &element, QgsSldExportContext &context,
504 Qt::BrushStyle brushStyle, const QColor &color = QColor() );
505
506 static bool fillFromSld( QDomElement &element,
507 Qt::BrushStyle &brushStyle, QColor &color );
508
510 static void lineToSld( QDomDocument &doc, QDomElement &element,
511 Qt::PenStyle penStyle, const QColor &color, QgsSldExportContext &context, double width = -1,
512 const Qt::PenJoinStyle *penJoinStyle = nullptr, const Qt::PenCapStyle *penCapStyle = nullptr,
513 const QVector<qreal> *customDashPattern = nullptr, double dashOffset = 0.0 ) SIP_SKIP;
514 static bool lineFromSld( QDomElement &element,
515 Qt::PenStyle &penStyle, QColor &color, double &width,
516 Qt::PenJoinStyle *penJoinStyle = nullptr, Qt::PenCapStyle *penCapStyle = nullptr,
517 QVector<qreal> *customDashPattern = nullptr, double *dashOffset = nullptr );
518
519 static void externalGraphicToSld( QDomDocument &doc, QDomElement &element,
520 const QString &path, const QString &mime,
521 const QColor &color, double size = -1 );
522 static bool externalGraphicFromSld( QDomElement &element,
523 QString &path, QString &mime,
524 QColor &color, double &size );
525
530 Q_DECL_DEPRECATED static void wellKnownMarkerToSld( QDomDocument &doc, QDomElement &element,
531 const QString &name, const QColor &color, const QColor &strokeColor, Qt::PenStyle strokeStyle,
532 double strokeWidth = -1, double size = -1 ) SIP_DEPRECATED;
533
538 static void wellKnownMarkerToSld( QDomDocument &doc, QDomElement &element,
539 const QString &name, const QColor &color, const QColor &strokeColor, Qt::PenStyle strokeStyle,
540 QgsSldExportContext &context,
541 double strokeWidth = -1, double size = -1 );
542
546 static bool wellKnownMarkerFromSld( QDomElement &element,
547 QString &name, QColor &color, QColor &strokeColor, Qt::PenStyle &strokeStyle,
548 double &strokeWidth, double &size ) SIP_PYNAME( wellKnownMarkerFromSld2 );
549
555 Q_DECL_DEPRECATED static void externalMarkerToSld( QDomDocument &doc, QDomElement &element,
556 const QString &path, const QString &format, int *markIndex = nullptr,
557 const QColor &color = QColor(), double size = -1 ) SIP_DEPRECATED;
558
564 static void externalMarkerToSld( QDomDocument &doc, QDomElement &element,
565 const QString &path, const QString &format, QgsSldExportContext &context, int *markIndex = nullptr,
566 const QColor &color = QColor(), double size = -1 );
567
568 static bool externalMarkerFromSld( QDomElement &element,
569 QString &path, QString &format, int &markIndex,
570 QColor &color, double &size );
571
577 Q_DECL_DEPRECATED static void labelTextToSld( QDomDocument &doc, QDomElement &element, const QString &label,
578 const QFont &font, const QColor &color = QColor(), double size = -1 ) SIP_DEPRECATED;
579
585 static void labelTextToSld( QDomDocument &doc, QDomElement &element, const QString &label,
586 const QFont &font, QgsSldExportContext &context, const QColor &color = QColor(), double size = -1 );
587
589 static QString ogrFeatureStylePen( double width, double mmScaleFactor, double mapUnitsScaleFactor, const QColor &c,
590 Qt::PenJoinStyle joinStyle = Qt::MiterJoin,
591 Qt::PenCapStyle capStyle = Qt::FlatCap,
592 double offset = 0.0,
593 const QVector<qreal> *dashPattern = nullptr );
594
599 static QString ogrFeatureStyleBrush( const QColor &fillColr );
600
605 Q_DECL_DEPRECATED static void createRotationElement( QDomDocument &doc, QDomElement &element, const QString &rotationFunc ) SIP_DEPRECATED;
606
611 static void createRotationElement( QDomDocument &doc, QDomElement &element, const QString &rotationFunc, QgsSldExportContext &context );
612
613 static bool rotationFromSldElement( QDomElement &element, QString &rotationFunc );
614
619 Q_DECL_DEPRECATED static void createOpacityElement( QDomDocument &doc, QDomElement &element, const QString &alphaFunc ) SIP_DEPRECATED;
620
625 static void createOpacityElement( QDomDocument &doc, QDomElement &element, const QString &alphaFunc, QgsSldExportContext &context );
626
627 static bool opacityFromSldElement( QDomElement &element, QString &alphaFunc );
628
629 static void createDisplacementElement( QDomDocument &doc, QDomElement &element, QPointF offset );
630 static bool displacementFromSldElement( QDomElement &element, QPointF &offset );
631
638 static void createAnchorPointElement( QDomDocument &doc, QDomElement &element, QPointF anchor );
639
640 static void createOnlineResourceElement( QDomDocument &doc, QDomElement &element, const QString &path, const QString &format );
641 static bool onlineResourceFromSldElement( QDomElement &element, QString &path, QString &format );
642
647 Q_DECL_DEPRECATED static void createGeometryElement( QDomDocument &doc, QDomElement &element, const QString &geomFunc ) SIP_DEPRECATED;
648
653 static void createGeometryElement( QDomDocument &doc, QDomElement &element, const QString &geomFunc, QgsSldExportContext &context );
654
655 static bool geometryFromSldElement( QDomElement &element, QString &geomFunc );
656
664 Q_DECL_DEPRECATED static bool createExpressionElement( QDomDocument &doc, QDomElement &element, const QString &function ) SIP_DEPRECATED;
665
674 static bool createExpressionElement( QDomDocument &doc, QDomElement &element, const QString &function, QgsSldExportContext &context );
675
680 Q_DECL_DEPRECATED static bool createFunctionElement( QDomDocument &doc, QDomElement &element, const QString &function ) SIP_DEPRECATED;
681
686 static bool createFunctionElement( QDomDocument &doc, QDomElement &element, const QString &function, QgsSldExportContext &context );
687
688 static bool functionFromSldElement( QDomElement &element, QString &function );
689
690 static QDomElement createSvgParameterElement( QDomDocument &doc, const QString &name, const QString &value );
691 static QgsStringMap getSvgParameterList( QDomElement &element );
692
693 static QDomElement createVendorOptionElement( QDomDocument &doc, const QString &name, const QString &value );
694 static QgsStringMap getVendorOptionList( QDomElement &element );
695
697 static QVariantMap parseProperties( const QDomElement &element );
699 static void saveProperties( QVariantMap props, QDomDocument &doc, QDomElement &element );
700
702 static QgsSymbolMap loadSymbols( QDomElement &element, const QgsReadWriteContext &context ) SIP_FACTORY;
704 static QDomElement saveSymbols( QgsSymbolMap &symbols, const QString &tagName, QDomDocument &doc, const QgsReadWriteContext &context );
705
706 static void clearSymbolMap( QgsSymbolMap &symbols );
707
714 static QMimeData *symbolToMimeData( const QgsSymbol *symbol ) SIP_FACTORY;
715
721 static std::unique_ptr< QgsSymbol > symbolFromMimeData( const QMimeData *data );
722
729 static std::unique_ptr< QgsColorRamp > loadColorRamp( QDomElement &element );
730
739 static QDomElement saveColorRamp( const QString &name, const QgsColorRamp *ramp, QDomDocument &doc );
740
747 static QVariant colorRampToVariant( const QString &name, QgsColorRamp *ramp );
748
755 static std::unique_ptr< QgsColorRamp > loadColorRamp( const QVariant &value );
756
762 static QString colorToName( const QColor &color );
763
770 static QList< QColor > parseColorList( const QString &colorStr );
771
778 static QMimeData *colorToMimeData( const QColor &color ) SIP_FACTORY;
779
787 static QColor colorFromMimeData( const QMimeData *data, bool &hasAlpha SIP_OUT );
788
794 static QgsNamedColorList colorListFromMimeData( const QMimeData *data );
795
802 static QMimeData *colorListToMimeData( const QgsNamedColorList &colorList, bool allFormats = true ) SIP_FACTORY;
803
812 static bool saveColorsToGpl( QFile &file, const QString &paletteName, const QgsNamedColorList &colors );
813
822 static QgsNamedColorList importColorsFromGpl( QFile &file, bool &ok, QString &name );
823
831 static QColor parseColor( const QString &colorStr, bool strictEval = false );
832
841 static QColor parseColorWithAlpha( const QString &colorStr, bool &containsAlpha, bool strictEval = false );
842
846 static void multiplyImageOpacity( QImage *image, qreal opacity );
847
849 static void blurImageInPlace( QImage &image, QRect rect, int radius, bool alphaOnly );
850
854 static void premultiplyColor( QColor &rgb, int alpha );
855
868 static bool condenseFillAndOutline( QgsFillSymbolLayer *fill, QgsLineSymbolLayer *outline );
869
871 static void sortVariantList( QList<QVariant> &list, Qt::SortOrder order );
873 static QPointF pointOnLineWithDistance( QPointF startPoint, QPointF directionPoint, double distance );
874
876 static QStringList listSvgFiles();
877
879 static QStringList listSvgFilesAt( const QString &directory );
880
887 static QString svgSymbolNameToPath( const QString &name, const QgsPathResolver &pathResolver );
888
893 static QString svgSymbolPathToName( const QString &path, const QgsPathResolver &pathResolver );
894
902 static QList< QList< QPolygonF > > toQPolygonF( const QgsGeometry &geometry, Qgis::SymbolType type );
903
911 static QList< QList< QPolygonF > > toQPolygonF( const QgsAbstractGeometry *geometry, Qgis::SymbolType type );
912
914 static QPointF polygonCentroid( const QPolygonF &points );
915
917 static QPointF polygonPointOnSurface( const QPolygonF &points, const QVector<QPolygonF> *rings = nullptr );
918
920 static bool pointInPolygon( const QPolygonF &points, QPointF point );
921
927 static double polylineLength( const QPolygonF &polyline );
928
941 static QPolygonF polylineSubstring( const QPolygonF &polyline, double startOffset, double endOffset );
942
950 static bool isSharpCorner( QPointF p1, QPointF p2, QPointF p3 );
951
959 static void appendPolyline( QPolygonF &target, const QPolygonF &line );
960
967 static std::unique_ptr< QgsExpression > fieldOrExpressionToExpression( const QString &fieldOrExpression );
968
975 static QString fieldOrExpressionFromExpression( QgsExpression *expression );
976
982 static QList<double> prettyBreaks( double minimum, double maximum, int classes );
983
988 static double rescaleUom( double size, Qgis::RenderUnit unit, const QVariantMap &props );
989
994 static QPointF rescaleUom( QPointF point, Qgis::RenderUnit unit, const QVariantMap &props ) SIP_PYNAME( rescalePointUom );
995
1000 static QVector<qreal> rescaleUom( const QVector<qreal> &array, Qgis::RenderUnit unit, const QVariantMap &props ) SIP_PYNAME( rescaleArrayUom );
1001
1005 static void applyScaleDependency( QDomDocument &doc, QDomElement &ruleElem, QVariantMap &props );
1006
1010 static void mergeScaleDependencies( double mScaleMinDenom, double mScaleMaxDenom, QVariantMap &props );
1011
1018 Q_DECL_DEPRECATED static void parametricSvgToSld( QDomDocument &doc, QDomElement &graphicElem,
1019 const QString &path,
1020 const QColor &fillColor, double size, const QColor &strokeColor, double strokeWidth ) SIP_DEPRECATED;
1021
1028 static void parametricSvgToSld( QDomDocument &doc, QDomElement &graphicElem,
1029 const QString &path,
1030 const QColor &fillColor, double size, const QColor &strokeColor, double strokeWidth,
1031 QgsSldExportContext &context );
1032
1036 static QString getSvgParametricPath( const QString &basePath, const QColor &fillColor, const QColor &strokeColor, double strokeWidth );
1037
1043 Q_DECL_DEPRECATED static QSet<const QgsSymbolLayer *> toSymbolLayerPointers( const QgsFeatureRenderer *renderer, const QSet<QgsSymbolLayerId> &symbolLayerIds );
1044
1052 static double rendererFrameRate( const QgsFeatureRenderer *renderer );
1053
1068 static QgsSymbol *restrictedSizeSymbol( const QgsSymbol *s, double minSize, double maxSize, QgsRenderContext *context, double &width, double &height, bool *ok = nullptr );
1069
1074 static QgsStringMap evaluatePropertiesMap( const QMap<QString, QgsProperty> &propertiesMap, const QgsExpressionContext &context );
1075
1085 static QSize tileSize( int width, int height, double &angleRad SIP_INOUT );
1086
1091 static void clearSymbolLayerIds( QgsSymbol *symbol );
1092
1097 static void clearSymbolLayerIds( QgsSymbolLayer *symbolLayer );
1098
1103 static void resetSymbolLayerIds( QgsSymbol *symbol );
1104
1109 static void resetSymbolLayerIds( QgsSymbolLayer *symbolLayer );
1110
1115 static void clearSymbolLayerMasks( QgsSymbol *symbol );
1116
1127 static QVector< QgsGeometry > collectSymbolLayerClipGeometries( const QgsRenderContext &context, const QString &symbolLayerId, const QRectF &bounds );
1128
1130#ifndef SIP_RUN
1131 static QgsProperty rotateWholeSymbol( double additionalRotation, const QgsProperty &property )
1132 {
1133 const QString exprString = property.asExpression();
1134 return QgsProperty::fromExpression( QString::number( additionalRotation ) + " + (" + exprString + ')' );
1135 }
1136
1137 static QgsProperty scaleWholeSymbol( double scaleFactor, const QgsProperty &property )
1138 {
1139 const QString exprString = property.asExpression();
1140 return QgsProperty::fromExpression( QString::number( scaleFactor ) + "*(" + exprString + ')' );
1141 }
1142
1143 static QgsProperty scaleWholeSymbol( double scaleFactorX, double scaleFactorY, const QgsProperty &property )
1144 {
1145 const QString exprString = property.asExpression();
1146 return QgsProperty::fromExpression(
1147 ( !qgsDoubleNear( scaleFactorX, 0.0 ) ? "tostring(" + QString::number( scaleFactorX ) + "*(" + exprString + "))" : QStringLiteral( "'0'" ) ) +
1148 "|| ',' || " +
1149 ( !qgsDoubleNear( scaleFactorY, 0.0 ) ? "tostring(" + QString::number( scaleFactorY ) + "*(" + exprString + "))" : QStringLiteral( "'0'" ) ) );
1150 }
1151#endif
1153
1154};
1155
1156class QPolygonF;
1157
1159QList<QPolygonF> offsetLine( QPolygonF polyline, double dist, Qgis::GeometryType geometryType ) SIP_SKIP;
1160
1161#endif
Qgis
Provides global constants and enumerations for use throughout the application.
Definition qgis.h:54
Qgis::MarkerClipMode
MarkerClipMode
Marker clipping modes.
Definition qgis.h:3143
Qgis::LineClipMode
LineClipMode
Line clipping modes.
Definition qgis.h:3157
Qgis::ScaleMethod
ScaleMethod
Scale methods.
Definition qgis.h:588
Qgis::GeometryType
GeometryType
The geometry types are used to group Qgis::WkbType in a coarse way.
Definition qgis.h:337
Qgis::JoinStyle
JoinStyle
Join styles for buffers.
Definition qgis.h:2084
Qgis::RenderUnit
RenderUnit
Rendering size units.
Definition qgis.h:5029
Qgis::EndCapStyle
EndCapStyle
End cap styles for buffers.
Definition qgis.h:2071
Qgis::VertexMarkerType
VertexMarkerType
Editing vertex markers, used for showing vertices during a edit operation.
Definition qgis.h:1796
Qgis::SymbolType
SymbolType
Symbol types.
Definition qgis.h:574
Qgis::SymbolType::Hybrid
@ Hybrid
Hybrid symbol.
Qgis::SymbolCoordinateReference
SymbolCoordinateReference
Symbol coordinate reference modes.
Definition qgis.h:3101
QgsAbstractGeometry
Abstract base class for all geometries.
Definition qgsabstractgeometry.h:80
QgsArrowSymbolLayer::HeadType
HeadType
Possible head types.
Definition qgsarrowsymbollayer.h:120
QgsArrowSymbolLayer::ArrowType
ArrowType
Possible arrow types.
Definition qgsarrowsymbollayer.h:133
QgsColorRamp
Abstract base class for color ramps.
Definition qgscolorramp.h:29
QgsExpressionContext
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
Definition qgsexpressioncontext.h:472
QgsExpression
Handles parsing and evaluation of expressions (formerly called "search strings").
Definition qgsexpression.h:190
QgsFeatureRenderer
Abstract base class for all 2D vector feature renderers.
Definition qgsrenderer.h:108
QgsFillSymbolLayer
Abstract base class for fill symbol layers.
Definition qgssymbollayer.h:1299
QgsGeometry
A geometry is the spatial representation of a feature.
Definition qgsgeometry.h:162
QgsLegendPatchShape
Represents a patch shape for use in map legends.
Definition qgslegendpatchshape.h:34
QgsLineSymbolLayer
Abstract base class for line symbol layers.
Definition qgssymbollayer.h:1103
QgsMapLayer
Base class for all map layer types.
Definition qgsmaplayer.h:77
QgsMapUnitScale
Struct for storing maximum and minimum scales for measurements in map units.
Definition qgsmapunitscale.h:37
QgsPathResolver
Resolves relative paths into absolute paths and vice versa.
Definition qgspathresolver.h:32
QgsProperty
A store for object properties.
Definition qgsproperty.h:228
QgsProperty::asExpression
QString asExpression() const
Returns an expression string representing the state of the property, or an empty string if the proper...
Definition qgsproperty.cpp:395
QgsProperty::fromExpression
static QgsProperty fromExpression(const QString &expression, bool isActive=true)
Returns a new ExpressionBasedProperty created from the specified expression.
Definition qgsproperty.cpp:234
QgsReadWriteContext
A container for the context for various read/write operations on objects.
Definition qgsreadwritecontext.h:34
QgsRenderContext
Contains information about the context of a rendering operation.
Definition qgsrendercontext.h:62
QgsScreenProperties
Stores properties relating to a screen.
Definition qgsscreenproperties.h:36
QgsSldExportContext
Holds SLD export options and other information related to SLD export of a QGIS layer style.
Definition qgssldexportcontext.h:29
QgsSymbolLayerId
We may need stable references to symbol layers, when pointers to symbol layers are not usable (when a...
Definition qgssymbollayerreference.h:58
QgsSymbolLayerUtils
Contains utility functions for working with symbols and symbol layers.
Definition qgssymbollayerutils.h:61
QgsSymbolLayerUtils::loadSymbol
static std::unique_ptr< QgsSymbol > loadSymbol(const QDomElement &element, const QgsReadWriteContext &context)
Attempts to load a symbol from a DOM element.
Definition qgssymbollayerutils.cpp:1281
QgsSymbolLayerUtils::loadSymbol
static std::unique_ptr< SymbolType > loadSymbol(const QDomElement &element, const QgsReadWriteContext &context)
Attempts to load a symbol from a DOM element and cast it to a particular symbol type.
Definition qgssymbollayerutils.h:403
QgsSymbolLayer
Abstract base class for symbol layers.
Definition qgssymbollayer.h:57
QgsSymbol
Abstract base class for all rendered symbols.
Definition qgssymbol.h:231
QgsNamedColorList
QList< QPair< QColor, QString > > QgsNamedColorList
List of colors paired with a friendly display name identifying the color.
Definition qgscolorscheme.h:33
c
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
Definition porting_processing.dox:1
qgsDoubleNear
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
Definition qgis.h:6302
QgsStringMap
QMap< QString, QString > QgsStringMap
Definition qgis.h:6816
qgis_sip.h
SIP_DEPRECATED
#define SIP_DEPRECATED
Definition qgis_sip.h:106
SIP_SKIP
#define SIP_SKIP
Definition qgis_sip.h:126
SIP_PYNAME
#define SIP_PYNAME(name)
Definition qgis_sip.h:81
SIP_OUT
#define SIP_OUT
Definition qgis_sip.h:58
SIP_FACTORY
#define SIP_FACTORY
Definition qgis_sip.h:76
SIP_INOUT
#define SIP_INOUT
Definition qgis_sip.h:71
QgsSymbolMap
QMap< QString, QgsSymbol * > QgsSymbolMap
Definition qgsrenderer.h:49
offsetLine
QList< QPolygonF > offsetLine(QPolygonF polyline, double dist, Qgis::GeometryType geometryType)
calculate geometry shifted by a specified distance
Definition qgssymbollayerutils.cpp:1206
QgsSymbolMap
QMap< QString, QgsSymbol * > QgsSymbolMap
Definition qgssymbollayerutils.h:42
QgsStringMap
QMap< QString, QString > QgsStringMap
Definition qgssymbollayerutils.h:41
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