QGIS API Documentation 3.41.0-Master (fda2aa46e9a)
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qgslabelsettingswidgetbase.h
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1/***************************************************************************
2 qgslabelsettingswidgetbase.h
3 ----------------------
4 begin : December 2019
5 copyright : (C) 2019 by Nyall Dawson
6 email : nyall dot dawson at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGSLABELSETTINGSWIDGETBASE_H
17#define QGSLABELSETTINGSWIDGETBASE_H
18
20#include "qgspallabeling.h"
22#include "qgspanelwidget.h"
24#include "qgis_gui.h"
25#include "qgis_sip.h"
26
27#include <QDialog>
28
29class QDialogButtonBox;
31
39{
40 Q_OBJECT
41
42 public:
43
49 QgsLabelSettingsWidgetBase( QWidget *parent SIP_TRANSFERTHIS = nullptr, QgsVectorLayer *vl = nullptr );
50
55 virtual void setContext( const QgsSymbolWidgetContext &context );
56
61 QgsSymbolWidgetContext context() const;
62
66 virtual void setGeometryType( Qgis::GeometryType type );
67
74 QgsPropertyCollection dataDefinedProperties() const;
75
81 void setDataDefinedProperties( const QgsPropertyCollection &dataDefinedProperties );
82
90 virtual void updateDataDefinedProperties( QgsPropertyCollection &properties );
91
92 signals:
93
97 void changed();
98
103
104 protected:
105
107
113 void registerDataDefinedButton( QgsPropertyOverrideButton *button, QgsPalLayerSettings::Property key );
114
119
120 private slots:
121
122 void createAuxiliaryField();
123 void updateDataDefinedProperty();
124
125 private:
126
127 QgsVectorLayer *mVectorLayer = nullptr;
128
129 QgsSymbolWidgetContext mContext;
130
131
132};
133
140class GUI_EXPORT QgsLabelSettingsWidgetDialog : public QDialog
141{
142 Q_OBJECT
143
144 public:
145
146
152 QgsLabelSettingsWidgetDialog( QgsLabelSettingsWidgetBase *widget SIP_TRANSFER, QWidget *parent = nullptr );
153
154
160 QDialogButtonBox *buttonBox();
161
162 private:
163
164 QDialogButtonBox *mButtonBox = nullptr;
165
166};
167
168#endif // QGSLABELSETTINGSWIDGETBASE_H
GeometryType
The geometry types are used to group Qgis::WkbType in a coarse way.
Definition qgis.h:337
Abstract interface for generating an expression context.
virtual QgsExpressionContext createExpressionContext() const =0
This method needs to be reimplemented in all classes which implement this interface and return an exp...
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
Base class for widgets which allow customization of label engine properties, such as label placement ...
void changed()
Emitted when any of the settings described by the widget are changed.
QgsPropertyCollection mDataDefinedProperties
Contains the data defined properties defined by the widget.
void auxiliaryFieldCreated()
Emitted when an auxiliary field is created in the widget.
A blocking dialog containing a QgsLabelSettingsWidgetBase.
Property
Data definable properties.
Base class for any widget that can be shown as a inline panel.
A grouped map of multiple QgsProperty objects, each referenced by a integer key value.
A button for controlling property overrides which may apply to a widget.
Contains settings which reflect the context in which a symbol (or renderer) widget is shown,...
Represents a vector layer which manages a vector based data sets.
#define SIP_TRANSFERTHIS
Definition qgis_sip.h:53
#define SIP_TRANSFER
Definition qgis_sip.h:36