QGIS API Documentation
3.0.2-Girona (307d082)
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Implementation of legend node interface for displaying raster legend entries. More...
#include <qgslayertreemodellegendnode.h>
Public Member Functions | |
QgsRasterSymbolLegendNode (QgsLayerTreeLayer *nodeLayer, const QColor &color, const QString &label, QObject *parent=nullptr) | |
Constructor for QgsRasterSymbolLegendNode. More... | |
QVariant | data (int role) const override |
Return 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 |
Return 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 |
Return pointer to the parent layer node. More... | |
QgsLayerTreeModel * | model () const |
Return pointer to model owning this legend node. More... | |
virtual bool | setData (const QVariant &value, int role) |
Set 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 raster legend entries.
Definition at line 327 of file qgslayertreemodellegendnode.h.
QgsRasterSymbolLegendNode::QgsRasterSymbolLegendNode | ( | QgsLayerTreeLayer * | nodeLayer, |
const QColor & | color, | ||
const QString & | label, | ||
QObject * | parent = nullptr |
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Constructor for QgsRasterSymbolLegendNode.
nodeLayer | layer node |
color | color |
label | label |
parent | attach a parent QObject to the legend node. |
Definition at line 538 of file qgslayertreemodellegendnode.cpp.
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overridevirtual |
Return data associated with the item. Must be implemented in derived class.
Implements QgsLayerTreeModelLegendNode.
Definition at line 545 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 561 of file qgslayertreemodellegendnode.cpp.