|
QGIS API Documentation
3.4.15-Madeira (e83d02e274)
|
|
QGIS API Documentation
3.4.15-Madeira (e83d02e274)
|
A fill symbol type, for rendering Polygon and MultiPolygon geometries. More...
#include <qgssymbol.h>
Public Member Functions | |
| QgsFillSymbol (const QgsSymbolLayerList &layers=QgsSymbolLayerList()) | |
| Constructor for QgsFillSymbol, with the specified list of initial symbol layers. More... | |
| QgsFillSymbol * | clone () const override |
| Returns a deep copy of this symbol. More... | |
| void | renderPolygon (const QPolygonF &points, QList< QPolygonF > *rings, const QgsFeature *f, QgsRenderContext &context, int layer=-1, bool selected=false) |
| void | setAngle (double angle) |
 Public Member Functions inherited from QgsSymbol | |
| virtual | ~QgsSymbol () |
| bool | appendSymbolLayer (QgsSymbolLayer *layer) |
| Appends a symbol layer at the end of the current symbol layer list. More... | |
| QImage | asImage (QSize size, QgsRenderContext *customContext=nullptr) |
| Returns an image of the symbol at the specified size. More... | |
| QImage | bigSymbolPreviewImage (QgsExpressionContext *expressionContext=nullptr) |
| Returns a large (roughly 100x100 pixel) preview image for the symbol. More... | |
| bool | changeSymbolLayer (int index, QgsSymbolLayer *layer) |
| Deletes the current layer at the specified index and replaces it with layer. More... | |
| bool | clipFeaturesToExtent () const |
| Returns whether features drawn by the symbol will be clipped to the render context's extent. More... | |
| QColor | color () const |
| Returns the symbol's color. More... | |
| bool | deleteSymbolLayer (int index) |
| Removes and deletes the symbol layer at the specified index. More... | |
| void | drawPreviewIcon (QPainter *painter, QSize size, QgsRenderContext *customContext=nullptr) |
| Draws an icon of the symbol that occupies an area given by size using the specified painter. More... | |
| QString | dump () const |
| Returns a string dump of the symbol's properties. More... | |
| void | exportImage (const QString &path, const QString &format, QSize size) |
| Export the symbol as an image format, to the specified path and with the given size. More... | |
| bool | forceRHR () const |
| Returns true if polygon features drawn by the symbol will be reoriented to follow the standard right-hand-rule orientation, in which the area that is bounded by the polygon is to the right of the boundary. More... | |
| bool | hasDataDefinedProperties () const |
| Returns whether the symbol utilizes any data defined properties. More... | |
| bool | insertSymbolLayer (int index, QgsSymbolLayer *layer) |
| Inserts a symbol layer to specified index. More... | |
| Q_DECL_DEPRECATED const QgsVectorLayer * | layer () const |
| QgsMapUnitScale | mapUnitScale () const |
| Returns the map unit scale for the symbol. More... | |
| qreal | opacity () const |
| Returns the opacity for the symbol. More... | |
| QgsUnitTypes::RenderUnit | outputUnit () const |
| Returns the units to use for sizes and widths within the symbol. More... | |
| void | renderFeature (const QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false, int currentVertexMarkerType=0, double currentVertexMarkerSize=0.0) SIP_THROW(QgsCsException) |
| Render a feature. More... | |
| RenderHints | renderHints () const |
| Returns the rendering hint flags for the symbol. More... | |
| void | setClipFeaturesToExtent (bool clipFeaturesToExtent) |
| Sets whether features drawn by the symbol should be clipped to the render context's extent. More... | |
| void | setColor (const QColor &color) |
| Sets the color for the symbol. More... | |
| void | setForceRHR (bool force) |
| Sets whether polygon features drawn by the symbol should be reoriented to follow the standard right-hand-rule orientation, in which the area that is bounded by the polygon is to the right of the boundary. More... | |
| Q_DECL_DEPRECATED void | setLayer (const QgsVectorLayer *layer) |
| void | setMapUnitScale (const QgsMapUnitScale &scale) |
| Sets the map unit scale for the symbol. More... | |
| void | setOpacity (qreal opacity) |
| Sets the opacity for the symbol. More... | |
| void | setOutputUnit (QgsUnitTypes::RenderUnit unit) |
| Sets the units to use for sizes and widths within the symbol. More... | |
| void | setRenderHints (RenderHints hints) |
| Sets rendering hint flags for the symbol. More... | |
| void | startRender (QgsRenderContext &context, const QgsFields &fields=QgsFields()) |
| Begins the rendering process for the symbol. More... | |
| void | stopRender (QgsRenderContext &context) |
| Ends the rendering process. More... | |
| QgsSymbolLayer * | symbolLayer (int layer) |
| Returns a specific symbol layer contained in the symbol. More... | |
| int | symbolLayerCount () const |
| Returns the total number of symbol layers contained in the symbol. More... | |
| QgsSymbolLayerList | symbolLayers () |
| Returns the list of symbol layers contained in the symbol. More... | |
| QgsSymbolRenderContext * | symbolRenderContext () |
| Returns the symbol render context. More... | |
| QgsSymbolLayer * | takeSymbolLayer (int index) |
| Removes a symbol layer from the list and returns a pointer to it. More... | |
| void | toSld (QDomDocument &doc, QDomElement &element, QgsStringMap props) const |
| Converts the symbol to a SLD representation. More... | |
| SymbolType | type () const |
| Returns the symbol's type. More... | |
| QSet< QString > | usedAttributes (const QgsRenderContext &context) const |
| Returns a list of attributes required to render this feature. More... | |
Static Public Member Functions | |
| static QgsFillSymbol * | createSimple (const QgsStringMap &properties) |
| Create a fill symbol with one symbol layer: SimpleFill with specified properties. More... | |
| Static Public Member Functions inherited from QgsSymbol | |
| static QgsSymbol * | defaultSymbol (QgsWkbTypes::GeometryType geomType) |
| Returns a new default symbol for the specified geometry type. More... | |
Additional Inherited Members | |
| Public Types inherited from QgsSymbol | |
| enum | RenderHint { DynamicRotation = 2 } |
| Flags controlling behavior of symbols during rendering. More... | |
| enum | ScaleMethod { ScaleArea, ScaleDiameter } |
| Scale method. More... | |
| enum | SymbolType { Marker, Line, Fill, Hybrid } |
| Type of the symbol. More... | |
| Protected Member Functions inherited from QgsSymbol | |
| QgsSymbol (SymbolType type, const QgsSymbolLayerList &layers) | |
| QgsSymbolLayerList | cloneLayers () const |
| Retrieve a cloned list of all layers that make up this symbol. More... | |
| void | renderUsingLayer (QgsSymbolLayer *layer, QgsSymbolRenderContext &context) |
| Renders a context using a particular symbol layer without passing in a geometry. More... | |
| void | renderVertexMarker (QPointF pt, QgsRenderContext &context, int currentVertexMarkerType, double currentVertexMarkerSize) |
| Render editing vertex marker at specified point. More... | |
| Static Protected Member Functions inherited from QgsSymbol | |
| static QPolygonF | _getLineString (QgsRenderContext &context, const QgsCurve &curve, bool clipToExtent=true) |
| Creates a line string in screen coordinates from a QgsCurve in map coordinates. More... | |
| static QPointF | _getPoint (QgsRenderContext &context, const QgsPoint &point) |
| Creates a point in screen coordinates from a QgsPoint in map coordinates. More... | |
| static void | _getPolygon (QPolygonF &pts, QList< QPolygonF > &holes, QgsRenderContext &context, const QgsPolygon &polygon, bool clipToExtent=true, bool correctRingOrientation=false) |
| Creates a polygon in screen coordinates from a QgsPolygonXYin map coordinates. More... | |
| static QPolygonF | _getPolygonRing (QgsRenderContext &context, const QgsCurve &curve, bool clipToExtent, bool isExteriorRing=false, bool correctRingOrientation=false) |
| Creates a polygon ring in screen coordinates from a QgsCurve in map coordinates. More... | |
| Protected Attributes inherited from QgsSymbol | |
| bool | mClipFeaturesToExtent = true |
| bool | mForceRHR = false |
| Q_DECL_DEPRECATED const QgsVectorLayer * | mLayer = nullptr |
| QgsSymbolLayerList | mLayers |
| qreal | mOpacity = 1.0 |
| Symbol opacity (in the range 0 - 1) More... | |
| RenderHints | mRenderHints = nullptr |
| SymbolType | mType |
A fill symbol type, for rendering Polygon and MultiPolygon geometries.
Definition at line 1003 of file qgssymbol.h.
| QgsFillSymbol::QgsFillSymbol | ( | const QgsSymbolLayerList & | layers = QgsSymbolLayerList() | ) |
Constructor for QgsFillSymbol, with the specified list of initial symbol layers.
Ownership of the layers are transferred to the symbol.
Definition at line 1843 of file qgssymbol.cpp.
|
overridevirtual |
Returns a deep copy of this symbol.
Ownership is transferred to the caller.
Implements QgsSymbol.
Definition at line 1952 of file qgssymbol.cpp.
|
static |
Create a fill symbol with one symbol layer: SimpleFill with specified properties.
This is a convenience method for easier creation of fill symbols.
Definition at line 1150 of file qgssymbol.cpp.
| void QgsFillSymbol::renderPolygon | ( | const QPolygonF & | points, |
| QList< QPolygonF > * | rings, | ||
| const QgsFeature * | f, | ||
| QgsRenderContext & | context, | ||
| int | layer = -1, |
||
| bool | selected = false |
||
| ) |
Definition at line 1850 of file qgssymbol.cpp.
| void QgsFillSymbol::setAngle | ( | double | angle | ) |
Definition at line 1964 of file qgssymbol.cpp.
1.8.11
