QGIS API Documentation 3.27.0-Master (0a97e3138f)
qgsprocessingmaplayercombobox.h
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1/***************************************************************************
2 qgsprocessingmaplayercombobox.h
3 -----------------------------
4 begin : June 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 QGSPROCESSINGMAPLAYERCOMBOBOX_H
17#define QGSPROCESSINGMAPLAYERCOMBOBOX_H
18
19#include "qgis.h"
20#include "qgis_gui.h"
21#include <QTreeView>
23#include "qgsfeatureid.h"
24#include "qgsmimedatautils.h"
26#include "qgsprocessinggui.h"
27
29class QToolButton;
30class QCheckBox;
34
36
43class GUI_EXPORT QgsProcessingMapLayerComboBox : public QWidget
44{
45 Q_OBJECT
46
47 public:
48
52 QgsProcessingMapLayerComboBox( const QgsProcessingParameterDefinition *parameter, QgsProcessingGui::WidgetType type = QgsProcessingGui::Standard, QWidget *parent = nullptr );
53
54 ~QgsProcessingMapLayerComboBox() override;
55
60 void setLayer( QgsMapLayer *layer );
61
71 QgsMapLayer *currentLayer();
72
81 QString currentText();
82
88 void setValue( const QVariant &value, QgsProcessingContext &context );
89
95 QVariant value() const;
96
101 void setWidgetContext( const QgsProcessingParameterWidgetContext &context );
102
109 void setEditable( bool editable );
110
117 bool isEditable() const;
118
119 signals:
120
124 void valueChanged();
125
126 protected:
127
128 void dragEnterEvent( QDragEnterEvent *event ) override;
129 void dragLeaveEvent( QDragLeaveEvent *event ) override;
130 void dropEvent( QDropEvent *event ) override;
131
132 private slots:
133
134 void onLayerChanged( QgsMapLayer *layer );
135 void selectionChanged( const QgsFeatureIds &selected, const QgsFeatureIds &deselected, bool clearAndSelect );
136 void showSourceOptions();
137 void selectFromFile();
138 void browseForLayer();
139
140 private:
141 std::unique_ptr< QgsProcessingParameterDefinition > mParameter;
142 QgsMapLayerComboBox *mCombo = nullptr;
143 QToolButton *mSelectButton = nullptr;
144 QToolButton *mIterateButton = nullptr;
145 QToolButton *mSettingsButton = nullptr;
146 QCheckBox *mUseSelectionCheckBox = nullptr;
147 bool mDragActive = false;
148 long long mFeatureLimit = -1;
149 bool mIsOverridingDefaultGeometryCheck = false;
151 QPointer< QgsMapLayer> mPrevLayer;
152 int mBlockChangedSignal = 0;
153
154 QgsBrowserGuiModel *mBrowserModel = nullptr;
155
156 QMenu *mFeatureSourceMenu = nullptr;
157 QgsMapLayer *compatibleMapLayerFromMimeData( const QMimeData *data, bool &incompatibleLayerSelected ) const;
158 QString compatibleUriFromMimeData( const QMimeData *data ) const;
159};
160
162#endif // QGSPROCESSINGMAPLAYERCOMBOBOX_H
A model for showing available data sources and other items in a structured tree.
InvalidGeometryCheck
Handling of features with invalid geometries.
@ GeometryAbortOnInvalid
Close iterator on encountering any features with invalid geometry. This requires a slow geometry vali...
The QgsMapLayerComboBox class is a combo box which displays the list of layers.
Base class for all map layer types.
Definition: qgsmaplayer.h:73
Contains information about the context in which a processing algorithm is executed.
WidgetType
Types of dialogs which Processing widgets can be created for.
@ Standard
Standard algorithm dialog.
Base class for the definition of processing parameters.
Contains settings which reflect the context in which a Processing parameter widget is shown,...
QSet< QgsFeatureId > QgsFeatureIds
Definition: qgsfeatureid.h:37