QGIS API Documentation
3.14.0-Pi (9f7028fd23)
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#include <qgslayertreemodellegendnode.h>
Public Member Functions | |
QgsSimpleLegendNode (QgsLayerTreeLayer *nodeLayer, const QString &label, const QIcon &icon=QIcon(), QObject *parent=nullptr, const QString &key=QString()) | |
Constructor for QgsSimpleLegendNode. More... | |
QVariant | data (int role) const override |
Returns data associated with the item. Must be implemented in derived class. More... | |
Public Member Functions inherited from QgsLayerTreeModelLegendNode | |
virtual bool | columnBreak () const |
Returns whether a forced column break should occur before the node. More... | |
virtual ItemMetrics | draw (const QgsLegendSettings &settings, ItemContext *ctx) |
Entry point called from QgsLegendRenderer to do the rendering. More... | |
virtual QSizeF | drawSymbol (const QgsLegendSettings &settings, ItemContext *ctx, double itemHeight) const |
Draws symbol on the left side of the item. More... | |
virtual QSizeF | drawSymbolText (const QgsLegendSettings &settings, ItemContext *ctx, QSizeF symbolSize) const |
Draws label on the right side of the item. More... | |
virtual QJsonObject | exportSymbolToJson (const QgsLegendSettings &settings, const QgsRenderContext &context) const |
Adds a symbol in base64 string within a JSON object with the key "icon". More... | |
QJsonObject | exportToJson (const QgsLegendSettings &settings, const QgsRenderContext &context) |
Entry point called from QgsLegendRenderer to do the rendering in a JSON object. 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 void | setColumnBreak (bool breakBeforeNode) |
Sets whether a forced column break should occur before the 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 void | setUserPatchSize (QSizeF size) |
Sets the user (overridden) size for the legend node. More... | |
virtual QString | userLabel () const |
virtual QSizeF | userPatchSize () const |
Returns the user (overridden) size for the legend node. More... | |
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 nullptr if legendMapViewData are not valid. More... | |
Protected Attributes inherited from QgsLayerTreeModelLegendNode | |
bool | mColumnBreakBeforeNode = false |
bool | mEmbeddedInParent |
QgsLayerTreeLayer * | mLayerNode = nullptr |
QgsLegendPatchShape | mPatchShape |
QString | mUserLabel |
QSizeF | mUserSize |
Implementation of legend node interface for displaying arbitrary label with icon.
Definition at line 497 of file qgslayertreemodellegendnode.h.
QgsSimpleLegendNode::QgsSimpleLegendNode | ( | QgsLayerTreeLayer * | nodeLayer, |
const QString & | label, | ||
const QIcon & | icon = QIcon() , |
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QObject * | parent = nullptr , |
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const QString & | key = QString() |
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Constructor for QgsSimpleLegendNode.
nodeLayer | layer node |
label | label |
icon | icon |
parent | attach a parent QObject to the legend node. |
key | the rule key |
Definition at line 793 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 801 of file qgslayertreemodellegendnode.cpp.