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| QgsHeatmapRenderer () |
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virtual | ~QgsHeatmapRenderer () |
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virtual QgsFeatureRendererV2 * | clone () const override |
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QgsVectorColorRampV2 * | colorRamp () const |
| Returns the color ramp used for shading the heatmap. More...
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virtual QString | dump () const override |
| for debugging More...
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bool | invertRamp () const |
| Returns whether the ramp is inverted. More...
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double | maximumValue () const |
| Returns the maximum value used for shading the heatmap. More...
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virtual void | modifyRequestExtent (QgsRectangle &extent, QgsRenderContext &context) override |
| Allows for a renderer to modify the extent of a feature request prior to rendering. More...
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double | radius () const |
| Returns the radius for the heatmap. More...
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const QgsMapUnitScale & | radiusMapUnitScale () const |
| Returns the map unit scale used for the heatmap's radius. More...
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QgsSymbolV2::OutputUnit | radiusUnit () const |
| Returns the units used for the heatmap's radius. More...
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virtual bool | renderFeature (QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false) override |
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double | renderQuality () const |
| Returns the render quality used for drawing the heatmap. More...
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virtual QDomElement | save (QDomDocument &doc) override |
| store renderer info to XML element More...
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void | setColorRamp (QgsVectorColorRampV2 *ramp) |
| Sets the color ramp to use for shading the heatmap. More...
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void | setInvertRamp (const bool invert) |
| Sets whether the ramp is inverted. More...
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void | setMaximumValue (const double value) |
| Sets the maximum value used for shading the heatmap. More...
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void | setRadius (const double radius) |
| Sets the radius for the heatmap. More...
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void | setRadiusMapUnitScale (const QgsMapUnitScale &scale) |
| Sets the map unit scale used for the heatmap's radius. More...
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void | setRadiusUnit (const QgsSymbolV2::OutputUnit unit) |
| Sets the units used for the heatmap's radius. More...
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void | setRenderQuality (const int quality) |
| Sets the render quality used for drawing the heatmap. More...
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void | setWeightExpression (const QString &expression) |
| Sets the expression used for weighting points when generating the heatmap. More...
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virtual void | startRender (QgsRenderContext &context, const QgsFields &fields) override |
| Needs to be called when a new render cycle is started. More...
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virtual void | stopRender (QgsRenderContext &context) override |
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virtual QgsSymbolV2 * | symbolForFeature (QgsFeature &feature, QgsRenderContext &context) override |
| To be overridden. More...
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virtual QgsSymbolV2List | symbols (QgsRenderContext &context) override |
| Returns list of symbols used by the renderer. More...
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virtual QList< QString > | usedAttributes () override |
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QString | weightExpression () const |
| Returns the expression used for weighting points when generating the heatmap. More...
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virtual | ~QgsFeatureRendererV2 () |
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virtual int | capabilities () |
| returns bitwise OR-ed capabilities of the renderer More...
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virtual void | checkLegendSymbolItem (const QString &key, bool state=true) |
| item in symbology was checked More...
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virtual QString | filter () |
| If a renderer does not require all the features this method may be overridden and return an expression used as where clause. More...
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bool | forceRasterRender () const |
| Returns whether the renderer must render as a raster. More...
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virtual QString | legendClassificationAttribute () const |
| If supported by the renderer, return classification attribute for the use in legend. More...
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virtual bool | legendSymbolItemChecked (const QString &key) |
| items of symbology items in legend is checked More...
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virtual QgsLegendSymbolList | legendSymbolItems (double scaleDenominator=-1, const QString &rule="") |
| return a list of item text / symbol More...
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virtual bool | legendSymbolItemsCheckable () const |
| items of symbology items in legend should be checkable More...
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virtual QgsLegendSymbolListV2 | legendSymbolItemsV2 () const |
| Return a list of symbology items for the legend. More...
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virtual QgsLegendSymbologyList | legendSymbologyItems (QSize iconSize) |
| return a list of symbology items for the legend More...
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virtual Q_DECL_DEPRECATED QgsSymbolV2 * | originalSymbolForFeature (QgsFeature &feature) |
| Return symbol for feature. More...
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virtual QgsSymbolV2 * | originalSymbolForFeature (QgsFeature &feature, QgsRenderContext &context) |
| Return symbol for feature. More...
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virtual Q_DECL_DEPRECATED QgsSymbolV2List | originalSymbolsForFeature (QgsFeature &feat) |
| Equivalent of originalSymbolsForFeature() call extended to support renderers that may use more symbols per feature - similar to symbolsForFeature() More...
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virtual QgsSymbolV2List | originalSymbolsForFeature (QgsFeature &feat, QgsRenderContext &context) |
| Equivalent of originalSymbolsForFeature() call extended to support renderers that may use more symbols per feature - similar to symbolsForFeature() More...
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QgsPaintEffect * | paintEffect () const |
| Returns the current paint effect for the renderer. More...
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virtual Q_DECL_DEPRECATED QString | rotationField () const |
| return rotation field name (or empty string if not set or not supported by renderer) More...
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void | setForceRasterRender (bool forceRaster) |
| Sets whether the renderer should be rendered to a raster destination. More...
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void | setPaintEffect (QgsPaintEffect *effect) |
| Sets the current paint effect for the renderer. More...
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virtual Q_DECL_DEPRECATED void | setRotationField (const QString &fieldName) |
| sets rotation field of renderer (if supported by the renderer) More...
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void | setUsingSymbolLevels (bool usingSymbolLevels) |
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void | setVertexMarkerAppearance (int type, int size) |
| set type and size of editing vertex markers for subsequent rendering More...
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virtual Q_DECL_DEPRECATED void | startRender (QgsRenderContext &context, const QgsVectorLayer *vlayer) |
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virtual Q_DECL_DEPRECATED QgsSymbolV2 * | symbolForFeature (QgsFeature &feature) |
| To be overridden. More...
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virtual Q_DECL_DEPRECATED QgsSymbolV2List | symbols () |
| for symbol levels More...
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virtual Q_DECL_DEPRECATED QgsSymbolV2List | symbolsForFeature (QgsFeature &feat) |
| return list of symbols used for rendering the feature. More...
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virtual QgsSymbolV2List | symbolsForFeature (QgsFeature &feat, QgsRenderContext &context) |
| Returns list of symbols used for rendering the feature. More...
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virtual void | toSld (QDomDocument &doc, QDomElement &element) const |
| used from subclasses to create SLD Rule elements following SLD v1.1 specs More...
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QString | type () const |
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bool | usingSymbolLevels () const |
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virtual Q_DECL_DEPRECATED bool | willRenderFeature (QgsFeature &feat) |
| return whether the renderer will render a feature or not. More...
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virtual bool | willRenderFeature (QgsFeature &feat, QgsRenderContext &context) |
| Returns whether the renderer will render a feature or not. More...
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virtual Q_DECL_DEPRECATED QDomElement | writeSld (QDomDocument &doc, const QgsVectorLayer &layer) const |
| create the SLD UserStyle element following the SLD v1.1 specs More...
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virtual QDomElement | writeSld (QDomDocument &doc, const QString &styleName) const |
| create the SLD UserStyle element following the SLD v1.1 specs with the given name More...
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enum | Capabilities {
SymbolLevels = 1,
RotationField = 1 << 1,
MoreSymbolsPerFeature = 1 << 2,
Filter = 1 << 3,
ScaleDependent = 1 << 4
} |
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| QgsFeatureRendererV2 (const QString &type) |
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void | copyPaintEffect (QgsFeatureRendererV2 *destRenderer) const |
| Copies paint effect of this renderer to another renderer. More...
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void | renderFeatureWithSymbol (QgsFeature &feature, QgsSymbolV2 *symbol, QgsRenderContext &context, int layer, bool selected, bool drawVertexMarker) |
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void | renderVertexMarker (const QPointF &pt, QgsRenderContext &context) |
| render editing vertex marker at specified point More...
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void | renderVertexMarkerPolygon (QPolygonF &pts, QList< QPolygonF > *rings, QgsRenderContext &context) |
| render editing vertex marker for a polygon More...
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void | renderVertexMarkerPolyline (QPolygonF &pts, QgsRenderContext &context) |
| render editing vertex marker for a polyline More...
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void | setScaleMethodToSymbol (QgsSymbolV2 *symbol, int scaleMethod) |
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static const unsigned char * | _getLineString (QPolygonF &pts, QgsRenderContext &context, const unsigned char *wkb, bool clipToExtent=true) |
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static const unsigned char * | _getPoint (QPointF &pt, QgsRenderContext &context, const unsigned char *wkb) |
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static const unsigned char * | _getPolygon (QPolygonF &pts, QList< QPolygonF > &holes, QgsRenderContext &context, const unsigned char *wkb, bool clipToExtent=true) |
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static void | convertSymbolRotation (QgsSymbolV2 *symbol, const QString &field) |
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static void | convertSymbolSizeScale (QgsSymbolV2 *symbol, QgsSymbolV2::ScaleMethod method, const QString &field) |
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int | mCurrentVertexMarkerSize |
| The current size of editing marker. More...
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int | mCurrentVertexMarkerType |
| The current type of editing marker. More...
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bool | mForceRaster |
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QgsPaintEffect * | mPaintEffect |
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QString | mType |
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bool | mUsingSymbolLevels |
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A renderer which draws points as a live heatmap.
- Note
- Added in version 2.7
Definition at line 33 of file qgsheatmaprenderer.h.