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8ffd91ea90
This is necessary in order to be able to correctly translate between absolute and relative paths deeper in the code - e.g. paths to SVG files used in marker or fill symbols. Until now, relative paths were translated to absolute paths on the fly. This is now changed - paths to files should be always absolute within QGIS objects - and paths only get turned into relative when saving projects. When loading a project, relative paths are translated to absolute paths immediately. This should lower the overall confusion about relative/absolute paths within QGIS, and also allow having different base directories for relative paths (e.g. QML or QPT files may use relative paths to their directory - rather than to the project directory)
522 lines
18 KiB
Plaintext
522 lines
18 KiB
Plaintext
/** \ingroup core
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* \class QgsSimpleMarkerSymbolLayerBase
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* \brief Abstract base class for simple marker symbol layers. Handles creation of the symbol shapes but
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* leaves the actual drawing of the symbols to subclasses.
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* \note Added in version 2.16
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*/
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class QgsSimpleMarkerSymbolLayerBase : QgsMarkerSymbolLayer
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{
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%TypeHeaderCode
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#include <qgsmarkersymbollayer.h>
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%End
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public:
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//! Marker symbol shapes
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enum Shape
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{
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Square, /*!< Square */
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Diamond, /*!< Diamond */
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Pentagon, /*!< Pentagon */
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Hexagon, /*!< Hexagon */
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Triangle, /*!< Triangle */
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EquilateralTriangle, /*!< Equilateral triangle*/
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Star, /*!< Star*/
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Arrow, /*!< Arrow*/
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Circle, /*!< Circle*/
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Cross, /*!< Cross (lines only)*/
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CrossFill, /*!< Solid filled cross*/
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Cross2, /*!< Rotated cross (lines only), "x" shape*/
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Line, /*!< Vertical line*/
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ArrowHead, /*!< Right facing arrow head (unfilled, lines only)*/
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ArrowHeadFilled, /*!< Right facing filled arrow head*/
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SemiCircle, /*!< Semi circle (top half)*/
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ThirdCircle, /*!< One third circle (top left third)*/
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QuarterCircle, /*!< Quarter circle (top left quarter)*/
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QuarterSquare, /*!< Quarter square (top left quarter)*/
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HalfSquare, /*!< Half square (left half)*/
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DiagonalHalfSquare, /*!< Diagonal half square (bottom left half)*/
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RightHalfTriangle, /*!< Right half of triangle*/
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LeftHalfTriangle, /*!< Left half of triangle*/
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};
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//! Returns a list of all available shape types.
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static QList< QgsSimpleMarkerSymbolLayerBase::Shape > availableShapes();
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/** Returns true if a symbol shape has a fill.
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* @param shape shape to test
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* @returns true if shape uses a fill, or false if shape uses lines only
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*/
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static bool shapeIsFilled( Shape shape );
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/** Constructor for QgsSimpleMarkerSymbolLayerBase.
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* @param shape symbol shape for markers
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* @param size symbol size (in mm)
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* @param angle symbol rotation angle
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* @param scaleMethod scaling method for data defined scaling
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*/
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QgsSimpleMarkerSymbolLayerBase( Shape shape = Circle,
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double size = DEFAULT_SIMPLEMARKER_SIZE,
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double angle = DEFAULT_SIMPLEMARKER_ANGLE,
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QgsSymbol::ScaleMethod scaleMethod = DEFAULT_SCALE_METHOD );
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/** Returns the shape for the rendered marker symbol.
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* @see setShape()
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*/
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Shape shape() const;
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/** Sets the rendered marker shape.
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* @param shape new marker shape
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* @see shape()
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*/
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void setShape( Shape shape );
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/** Attempts to decode a string representation of a shape name to the corresponding
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* shape.
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* @param name encoded shape name
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* @param ok if specified, will be set to true if shape was successfully decoded
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* @return decoded name
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* @see encodeShape()
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*/
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static Shape decodeShape( const QString &name, bool *ok = 0 );
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/** Encodes a shape to its string representation.
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* @param shape shape to encode
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* @returns encoded string
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* @see decodeShape()
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*/
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static QString encodeShape( Shape shape );
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void startRender( QgsSymbolRenderContext &context );
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void stopRender( QgsSymbolRenderContext &context );
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void renderPoint( QPointF point, QgsSymbolRenderContext &context );
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QRectF bounds( QPointF point, QgsSymbolRenderContext &context );
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protected:
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//! Prepares the layer for drawing the specified shape (QPolygonF version)
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bool prepareMarkerShape( Shape shape );
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//! Prepares the layer for drawing the specified shape (QPainterPath version)
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bool prepareMarkerPath( Shape symbol );
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/** Creates a polygon representing the specified shape.
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* @param shape shape to create
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* @param polygon destination polygon for shape
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* @returns true if shape was successfully stored in polygon
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*/
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bool shapeToPolygon( Shape shape, QPolygonF &polygon ) const;
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/** Calculates the desired size of the marker, considering data defined size overrides.
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* @param context symbol render context
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* @param hasDataDefinedSize will be set to true if marker uses data defined sizes
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* @returns marker size, in original size units
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*/
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double calculateSize( QgsSymbolRenderContext &context, bool &hasDataDefinedSize ) const;
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/** Calculates the marker offset and rotation.
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* @param context symbol render context
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* @param scaledSize size of symbol to render
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* @param hasDataDefinedRotation will be set to true if marker has data defined rotation
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* @param offset will be set to calculated marker offset (in painter units)
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* @param angle will be set to calculated marker angle
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*/
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void calculateOffsetAndRotation( QgsSymbolRenderContext &context, double scaledSize, bool &hasDataDefinedRotation, QPointF &offset, double &angle ) const;
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private:
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/** Derived classes must implement draw() to handle drawing the generated shape onto the painter surface.
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* @param context symbol render context
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* @param shape shape to draw
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* @param polygon polygon representing transformed marker shape. May be empty, in which case the shape will be specified
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* in the path argument.
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* @param path transformed painter path representing shape to draw
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*/
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virtual void draw( QgsSymbolRenderContext &context, Shape shape, const QPolygonF &polygon, const QPainterPath &path ) = 0;
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};
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/** \ingroup core
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* \class QgsSimpleMarkerSymbolLayer
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* \brief Simple marker symbol layer, consisting of a rendered shape with solid fill color and an stroke.
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*/
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class QgsSimpleMarkerSymbolLayer : QgsSimpleMarkerSymbolLayerBase
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{
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%TypeHeaderCode
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#include <qgsmarkersymbollayer.h>
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%End
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public:
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/** Constructor for QgsSimpleMarkerSymbolLayer.
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* @param shape symbol shape
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* @param size symbol size (in mm)
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* @param angle symbol rotation angle
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* @param scaleMethod scaling method for data defined scaling
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* @param color fill color for symbol
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* @param strokeColor stroke color for symbol
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* @param penJoinStyle join style for stroke pen
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*/
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QgsSimpleMarkerSymbolLayer( Shape shape = Circle,
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double size = DEFAULT_SIMPLEMARKER_SIZE,
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double angle = DEFAULT_SIMPLEMARKER_ANGLE,
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QgsSymbol::ScaleMethod scaleMethod = DEFAULT_SCALE_METHOD,
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const QColor& color = DEFAULT_SIMPLEMARKER_COLOR,
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const QColor& strokeColor = DEFAULT_SIMPLEMARKER_BORDERCOLOR,
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Qt::PenJoinStyle penJoinStyle = DEFAULT_SIMPLEMARKER_JOINSTYLE );
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// static methods
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/** Creates a new QgsSimpleMarkerSymbolLayer.
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* @param properties a property map containing symbol properties (see properties())
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* @returns new QgsSimpleMarkerSymbolLayer
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*/
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static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) /Factory/;
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/** Creates a new QgsSimpleMarkerSymbolLayer from an SLD XML element.
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* @param element XML element containing SLD definition of symbol
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* @returns new QgsSimpleMarkerSymbolLayer
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*/
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static QgsSymbolLayer *createFromSld( QDomElement &element ) /Factory/;
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// reimplemented from base classes
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QString layerType() const;
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void startRender( QgsSymbolRenderContext &context );
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void renderPoint( QPointF point, QgsSymbolRenderContext &context );
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QgsStringMap properties() const;
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virtual QgsSimpleMarkerSymbolLayer *clone() const /Factory/;
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void writeSldMarker( QDomDocument &doc, QDomElement &element, const QgsStringMap &props ) const;
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QString ogrFeatureStyle( double mmScaleFactor, double mapUnitScaleFactor ) const;
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bool writeDxf( QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift = QPointF( 0.0, 0.0 ) ) const;
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void setOutputUnit( QgsUnitTypes::RenderUnit unit );
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QgsUnitTypes::RenderUnit outputUnit() const;
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void setMapUnitScale( const QgsMapUnitScale &scale );
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QgsMapUnitScale mapUnitScale() const;
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QRectF bounds( QPointF point, QgsSymbolRenderContext &context );
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QColor fillColor() const;
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void setFillColor( const QColor &color );
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void setColor( const QColor &color );
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virtual QColor color() const;
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// new methods
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/** Returns the marker's stroke color.
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* @see setStrokeColor()
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* @see strokeStyle()
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* @see penJoinStyle()
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*/
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QColor strokeColor() const;
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/** Sets the marker's stroke color.
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* @param color stroke color
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* @see strokeColor()
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* @see setStrokeStyle()
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* @see setPenJoinStyle()
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*/
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void setStrokeColor( const QColor &color );
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/** Returns the marker's stroke style (e.g., solid, dashed, etc)
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* @note added in 2.4
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* @see setStrokeStyle()
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* @see strokeColor()
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* @see penJoinStyle()
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*/
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Qt::PenStyle strokeStyle() const;
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/** Sets the marker's stroke style (e.g., solid, dashed, etc)
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* @param strokeStyle style
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* @note added in 2.4
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* @see strokeStyle()
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* @see setStrokeColor()
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* @see setPenJoinStyle()
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*/
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void setStrokeStyle( Qt::PenStyle strokeStyle );
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/** Returns the marker's stroke join style (e.g., miter, bevel, etc).
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* @note added in 2.16
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* @see setPenJoinStyle()
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* @see strokeColor()
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* @see strokeStyle()
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*/
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Qt::PenJoinStyle penJoinStyle() const;
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/** Sets the marker's stroke join style (e.g., miter, bevel, etc).
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* @param style join style
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* @note added in 2.16
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* @see penJoinStyle()
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* @see setStrokeColor()
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* @see setStrokeStyle()
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*/
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void setPenJoinStyle( Qt::PenJoinStyle style );
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/** Returns the width of the marker's stroke.
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* @see setStrokeWidth()
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* @see strokeWidthUnit()
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* @see strokeWidthMapUnitScale()
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*/
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double strokeWidth() const;
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/** Sets the width of the marker's stroke.
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* @param w stroke width. See strokeWidthUnit() for units.
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* @see strokeWidth()
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* @see setStrokeWidthUnit()
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* @see setStrokeWidthMapUnitScale()
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*/
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void setStrokeWidth( double w );
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/** Sets the unit for the width of the marker's stroke.
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* @param u stroke width unit
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* @see strokeWidthUnit()
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* @see setStrokeWidth()
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* @see setStrokeWidthMapUnitScale()
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*/
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void setStrokeWidthUnit( QgsUnitTypes::RenderUnit u );
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/** Returns the unit for the width of the marker's stroke.
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* @see setStrokeWidthUnit()
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* @see strokeWidth()
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* @see strokeWidthMapUnitScale()
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*/
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QgsUnitTypes::RenderUnit strokeWidthUnit() const;
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/** Sets the map scale for the width of the marker's stroke.
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* @param scale stroke width map unit scale
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* @see strokeWidthMapUnitScale()
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* @see setStrokeWidth()
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* @see setStrokeWidthUnit()
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*/
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void setStrokeWidthMapUnitScale( const QgsMapUnitScale &scale );
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/** Returns the map scale for the width of the marker's stroke.
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* @see setStrokeWidthMapUnitScale()
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* @see strokeWidth()
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* @see strokeWidthUnit()
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*/
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const QgsMapUnitScale &strokeWidthMapUnitScale() const;
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protected:
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/** Draws the marker shape in the specified painter.
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* @param p destination QPainter
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* @param context symbol context
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* @note this method does not handle setting the painter pen or brush to match the symbol's fill or stroke
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*/
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void drawMarker( QPainter *p, QgsSymbolRenderContext &context );
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/** Prepares cache image
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* @returns true in case of success, false if cache image size too large
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*/
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bool prepareCache( QgsSymbolRenderContext &context );
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private:
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virtual void draw( QgsSymbolRenderContext &context, Shape shape, const QPolygonF &polygon, const QPainterPath &path );
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};
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/** \ingroup core
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* \class QgsFilledMarkerSymbolLayer
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* \brief Filled marker symbol layer, consisting of a shape which is rendered using a QgsFillSymbol. This allows
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* the symbol to support advanced styling of the interior and stroke of the shape.
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* \note Added in version 2.16
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*/
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class QgsFilledMarkerSymbolLayer : QgsSimpleMarkerSymbolLayerBase
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{
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%TypeHeaderCode
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#include <qgsmarkersymbollayer.h>
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%End
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public:
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/** Constructor for QgsFilledMarkerSymbolLayer.
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* @param shape symbol shape
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* @param size symbol size (in mm)
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* @param angle symbol rotation angle
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* @param scaleMethod size scaling method
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*/
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QgsFilledMarkerSymbolLayer( Shape shape = Circle,
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double size = DEFAULT_SIMPLEMARKER_SIZE,
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double angle = DEFAULT_SIMPLEMARKER_ANGLE,
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QgsSymbol::ScaleMethod scaleMethod = DEFAULT_SCALE_METHOD );
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/** Creates a new QgsFilledMarkerSymbolLayer.
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* @param properties a property map containing symbol properties (see properties())
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* @returns new QgsFilledMarkerSymbolLayer
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*/
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static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) /Factory/;
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QString layerType() const;
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void startRender( QgsSymbolRenderContext &context );
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void stopRender( QgsSymbolRenderContext &context );
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QgsStringMap properties() const;
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virtual QgsFilledMarkerSymbolLayer *clone() const /Factory/;
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virtual QgsSymbol *subSymbol();
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virtual bool setSubSymbol( QgsSymbol *symbol /Transfer/ );
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virtual double estimateMaxBleed( const QgsRenderContext &context ) const;
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QSet<QString> usedAttributes( const QgsRenderContext &context ) const;
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void setColor( const QColor &c );
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virtual QColor color() const;
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private:
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virtual void draw( QgsSymbolRenderContext &context, Shape shape, const QPolygonF &polygon, const QPainterPath &path );
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QgsFilledMarkerSymbolLayer( const QgsFilledMarkerSymbolLayer& );
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};
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class QgsSvgMarkerSymbolLayer : QgsMarkerSymbolLayer
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{
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%TypeHeaderCode
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#include <qgsmarkersymbollayer.h>
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%End
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public:
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QgsSvgMarkerSymbolLayer( const QString& path,
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double size = DEFAULT_SVGMARKER_SIZE,
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double angle = DEFAULT_SVGMARKER_ANGLE,
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QgsSymbol::ScaleMethod scaleMethod = DEFAULT_SCALE_METHOD );
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// static stuff
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static QgsSymbolLayer* create( const QgsStringMap& properties = QgsStringMap() ) /Factory/;
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static QgsSymbolLayer* createFromSld( QDomElement &element ) /Factory/;
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static void resolvePaths( QgsStringMap& properties, const QgsPathResolver& pathResolver, bool saving );
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// implemented from base classes
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QString layerType() const;
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void startRender( QgsSymbolRenderContext &context );
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void stopRender( QgsSymbolRenderContext &context );
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void renderPoint( QPointF point, QgsSymbolRenderContext &context );
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QgsStringMap properties() const;
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virtual QgsSvgMarkerSymbolLayer *clone() const /Factory/;
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void writeSldMarker( QDomDocument &doc, QDomElement &element, const QgsStringMap &props ) const;
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QString path() const;
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void setPath( const QString &path );
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QColor fillColor() const;
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void setFillColor( const QColor &c );
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QColor strokeColor() const;
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void setStrokeColor( const QColor &c );
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double strokeWidth() const;
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void setStrokeWidth( double w );
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/** Sets the units for the stroke width.
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* @param unit width units
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* @see strokeWidthUnit()
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*/
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void setStrokeWidthUnit( QgsUnitTypes::RenderUnit unit );
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/** Returns the units for the stroke width.
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* @see strokeWidthUnit()
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*/
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QgsUnitTypes::RenderUnit strokeWidthUnit() const;
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void setStrokeWidthMapUnitScale( const QgsMapUnitScale &scale);
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const QgsMapUnitScale &strokeWidthMapUnitScale() const;
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void setOutputUnit( QgsUnitTypes::RenderUnit unit );
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QgsUnitTypes::RenderUnit outputUnit() const;
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void setMapUnitScale( const QgsMapUnitScale &scale );
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QgsMapUnitScale mapUnitScale() const;
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bool writeDxf( QgsDxfExport &e, double mmMapUnitScaleFactor, const QString &layerName, QgsSymbolRenderContext &context, QPointF shift = QPointF( 0.0, 0.0 ) ) const;
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QRectF bounds( QPointF point, QgsSymbolRenderContext &context );
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};
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class QgsFontMarkerSymbolLayer : QgsMarkerSymbolLayer
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{
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%TypeHeaderCode
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#include <qgsmarkersymbollayer.h>
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%End
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public:
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QgsFontMarkerSymbolLayer( const QString& fontFamily = DEFAULT_FONTMARKER_FONT,
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QChar chr = DEFAULT_FONTMARKER_CHR,
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double pointSize = DEFAULT_FONTMARKER_SIZE,
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const QColor& color = DEFAULT_FONTMARKER_COLOR,
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double angle = DEFAULT_FONTMARKER_ANGLE );
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~QgsFontMarkerSymbolLayer();
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// static stuff
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static QgsSymbolLayer *create( const QgsStringMap &properties = QgsStringMap() ) /Factory/;
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static QgsSymbolLayer *createFromSld( QDomElement &element ) /Factory/;
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// implemented from base classes
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QString layerType() const;
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void startRender( QgsSymbolRenderContext &context );
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void stopRender( QgsSymbolRenderContext &context );
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void renderPoint( QPointF point, QgsSymbolRenderContext &context );
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QgsStringMap properties() const;
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virtual QgsFontMarkerSymbolLayer *clone() const /Factory/;
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void writeSldMarker( QDomDocument &doc, QDomElement &element, const QgsStringMap &props ) const;
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// new methods
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QString fontFamily() const;
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void setFontFamily( const QString &family );
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QChar character() const;
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void setCharacter( QChar ch );
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/** Get stroke color.
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* @note added in 2.16 */
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QColor strokeColor() const;
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/** Set stroke color.
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* @note added in 2.16 */
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void setStrokeColor( const QColor &color );
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/** Get stroke width.
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* @note added in 2.16 */
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double strokeWidth() const;
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/** Set stroke width.
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* @note added in 2.16 */
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void setStrokeWidth( double width );
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/** Get stroke width unit.
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* @note added in 2.16 */
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QgsUnitTypes::RenderUnit strokeWidthUnit() const;
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/** Set stroke width unit.
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* @note added in 2.16 */
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void setStrokeWidthUnit( QgsUnitTypes::RenderUnit unit );
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/** Get stroke width map unit scale.
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* @note added in 2.16 */
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const QgsMapUnitScale &strokeWidthMapUnitScale() const;
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/** Set stroke width map unit scale.
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* @note added in 2.16 */
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void setStrokeWidthMapUnitScale( const QgsMapUnitScale &scale );
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/** Get stroke join style.
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* @note added in 2.16 */
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Qt::PenJoinStyle penJoinStyle() const;
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/** Set stroke join style.
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* @note added in 2.16 */
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void setPenJoinStyle( Qt::PenJoinStyle style );
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QRectF bounds( QPointF point, QgsSymbolRenderContext &context );
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};
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