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QGIS API Documentation
3.4.15-Madeira (e83d02e274)
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QGIS API Documentation
3.4.15-Madeira (e83d02e274)
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Implementation of legend node interface for displaying arbitrary raster image. More...
#include <qgslayertreemodellegendnode.h>
Public Member Functions | |
| QgsImageLegendNode (QgsLayerTreeLayer *nodeLayer, const QImage &img, QObject *parent=nullptr) | |
| Constructor for QgsImageLegendNode. More... | |
| QVariant | data (int role) const override |
| Returns data associated with the item. Must be implemented in derived class. More... | |
| QSizeF | drawSymbol (const QgsLegendSettings &settings, ItemContext *ctx, double itemHeight) const override |
| Draws symbol on the left side of the item. More... | |
 Public Member Functions inherited from QgsLayerTreeModelLegendNode | |
| virtual ItemMetrics | draw (const QgsLegendSettings &settings, ItemContext *ctx) |
| Entry point called from QgsLegendRenderer to do the rendering. More... | |
| virtual QSizeF | drawSymbolText (const QgsLegendSettings &settings, ItemContext *ctx, QSizeF symbolSize) const |
| Draws label on the right side of the item. More... | |
| virtual Qt::ItemFlags | flags () const |
| Returns item flags associated with the item. Default implementation returns Qt::ItemIsEnabled. More... | |
| virtual void | invalidateMapBasedData () |
| Notification from model that information from associated map view has changed. More... | |
| virtual bool | isEmbeddedInParent () const |
| virtual bool | isScaleOK (double scale) const |
| QgsLayerTreeLayer * | layerNode () const |
| Returns pointer to the parent layer node. More... | |
| QgsLayerTreeModel * | model () const |
| Returns pointer to model owning this legend node. More... | |
| virtual bool | setData (const QVariant &value, int role) |
| Sets some data associated with the item. Default implementation does nothing and returns false. More... | |
| virtual void | setEmbeddedInParent (bool embedded) |
| virtual void | setUserLabel (const QString &userLabel) |
| virtual QString | userLabel () const |
Additional Inherited Members | |
| Public Types inherited from QgsLayerTreeModelLegendNode | |
| enum | LegendNodeRoles { RuleKeyRole = Qt::UserRole, ParentRuleKeyRole } |
| Signals inherited from QgsLayerTreeModelLegendNode | |
| void | dataChanged () |
| Emitted on internal data change so the layer tree model can forward the signal to views. More... | |
| Protected Member Functions inherited from QgsLayerTreeModelLegendNode | |
| QgsLayerTreeModelLegendNode (QgsLayerTreeLayer *nodeL, QObject *parent=nullptr) | |
| Construct the node with pointer to its parent layer node. More... | |
| QgsRenderContext * | createTemporaryRenderContext () const |
| Returns a temporary context or null if legendMapViewData are not valid. More... | |
| Protected Attributes inherited from QgsLayerTreeModelLegendNode | |
| bool | mEmbeddedInParent |
| QgsLayerTreeLayer * | mLayerNode = nullptr |
| QString | mUserLabel |
Implementation of legend node interface for displaying arbitrary raster image.
Definition at line 327 of file qgslayertreemodellegendnode.h.
| QgsImageLegendNode::QgsImageLegendNode | ( | QgsLayerTreeLayer * | nodeLayer, |
| const QImage & | img, | ||
| QObject * | parent = nullptr |
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| ) |
Constructor for QgsImageLegendNode.
| nodeLayer | layer node |
| img | the image |
| parent | attach a parent QObject to the legend node. |
Definition at line 540 of file qgslayertreemodellegendnode.cpp.
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overridevirtual |
Returns data associated with the item. Must be implemented in derived class.
Implements QgsLayerTreeModelLegendNode.
Definition at line 546 of file qgslayertreemodellegendnode.cpp.
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overridevirtual |
Draws symbol on the left side of the item.
| settings | Legend layout configuration |
| ctx | Context for rendering - may be null if only doing layout without actual rendering |
| itemHeight | Minimal height of the legend item - used for correct positioning when rendering |
Reimplemented from QgsLayerTreeModelLegendNode.
Definition at line 559 of file qgslayertreemodellegendnode.cpp.
1.8.11
