QGIS API Documentation 3.37.0-Master (fdefdf9c27f)
qgsfeatureselectiondlg.cpp
Go to the documentation of this file.
1/***************************************************************************
2 qgsfeatureselectiondlg.cpp
3 --------------------------------------
4 Date : 11.6.2013
5 Copyright : (C) 2013 Matthias Kuhn
6 Email : matthias at opengis dot ch
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
17
19#include "qgsdistancearea.h"
20#include "qgsfeaturerequest.h"
22#include "qgsapplication.h"
24#include "qgsmapcanvas.h"
25
26#include <QWindow>
27
29 : QDialog( parent, Qt::Window )
30 , mVectorLayer( vl )
31 , mContext( context )
32{
33 setupUi( this );
34
35 mFeatureSelection = new QgsVectorLayerSelectionManager( vl, mDualView );
36
37 mDualView->setFeatureSelectionManager( mFeatureSelection );
38
39 mDualView->init( mVectorLayer, context.mapCanvas(), QgsFeatureRequest(), context );
40 mDualView->setView( QgsDualView::AttributeEditor );
41
42 mFeatureFilterWidget->init( vl, context, mDualView, mMessageBar, 5 );
43 mFeatureFilterWidget->filterVisible();
44
45 connect( mActionExpressionSelect, &QAction::triggered, this, &QgsFeatureSelectionDlg::mActionExpressionSelect_triggered );
46 connect( mActionSelectAll, &QAction::triggered, this, &QgsFeatureSelectionDlg::mActionSelectAll_triggered );
47 connect( mActionInvertSelection, &QAction::triggered, this, &QgsFeatureSelectionDlg::mActionInvertSelection_triggered );
48 connect( mActionRemoveSelection, &QAction::triggered, this, &QgsFeatureSelectionDlg::mActionRemoveSelection_triggered );
49 connect( mActionSearchForm, &QAction::toggled, mDualView, &QgsDualView::toggleSearchMode );
50 connect( mActionSelectedToTop, &QAction::toggled, this, [this]( bool checked ) { mDualView->setSelectedOnTop( checked ); } );
51 connect( mActionZoomMapToSelectedRows, &QAction::triggered, this, &QgsFeatureSelectionDlg::mActionZoomMapToSelectedRows_triggered );
52 connect( mActionPanMapToSelectedRows, &QAction::triggered, this, &QgsFeatureSelectionDlg::mActionPanMapToSelectedRows_triggered );
53
54 connect( mDualView, &QgsDualView::filterExpressionSet, this, &QgsFeatureSelectionDlg::setFilterExpression );
55 connect( mDualView, &QgsDualView::formModeChanged, this, &QgsFeatureSelectionDlg::viewModeChanged );
56}
57
59{
60 // don't accept Enter key to accept the dialog, user could be editing a text field
61 if ( evt->key() == Qt::Key_Enter || evt->key() == Qt::Key_Return )
62 return;
63 QDialog::keyPressEvent( evt );
64}
65
67{
68 return mFeatureSelection->selectedFeatureIds();
69}
70
72{
73 mFeatureSelection->setSelectedFeatures( ids );
74}
75
76void QgsFeatureSelectionDlg::showEvent( QShowEvent *event )
77{
78
79 QWindow *mainWindow = nullptr;
80 for ( const auto &w : QgsApplication::topLevelWindows() )
81 {
82 if ( w->objectName() == QLatin1String( "QgisAppWindow" ) )
83 {
84 mainWindow = w;
85 break;
86 }
87 }
88
89 if ( mainWindow )
90 {
91 const QSize margins( size() - scrollAreaWidgetContents->size() );
92 const QSize innerWinSize( mainWindow->width(), mainWindow->height() );
93 setMaximumSize( innerWinSize );
94 const QSize minSize( scrollAreaWidgetContents->sizeHint() );
95 setMinimumSize( std::min( minSize.width() + margins.width( ), innerWinSize.width() ),
96 std::min( minSize.height() + margins.width( ), innerWinSize.height() ) );
97 }
98
99 QDialog::showEvent( event );
100}
101
102void QgsFeatureSelectionDlg::mActionExpressionSelect_triggered()
103{
105 dlg->setMessageBar( mMessageBar );
106 dlg->setAttribute( Qt::WA_DeleteOnClose );
107 dlg->show();
108}
109
110void QgsFeatureSelectionDlg::mActionInvertSelection_triggered()
111{
112 mVectorLayer->invertSelection();
113}
114
115void QgsFeatureSelectionDlg::mActionRemoveSelection_triggered()
116{
117 mVectorLayer->removeSelection();
118}
119
120void QgsFeatureSelectionDlg::mActionSelectAll_triggered()
121{
122 mVectorLayer->selectAll();
123}
124
125void QgsFeatureSelectionDlg::mActionZoomMapToSelectedRows_triggered()
126{
127 mContext.mapCanvas()->zoomToSelected( mVectorLayer );
128}
129
130void QgsFeatureSelectionDlg::mActionPanMapToSelectedRows_triggered()
131{
132 mContext.mapCanvas()->panToSelected( mVectorLayer );
133}
134
135void QgsFeatureSelectionDlg::setFilterExpression( const QString &filter, QgsAttributeForm::FilterType type )
136{
137 mFeatureFilterWidget->setFilterExpression( filter, type, true );
138}
139
140void QgsFeatureSelectionDlg::viewModeChanged( QgsAttributeEditorContext::Mode mode )
141{
142 mActionSearchForm->setChecked( mode == QgsAttributeEditorContext::SearchMode );
143}
This class contains context information for attribute editor widgets.
QgsMapCanvas * mapCanvas() const
Returns the associated map canvas (e.g.
@ SearchMode
Form values are used for searching/filtering the layer.
FilterType
Filter types.
@ AttributeEditor
Show a list of the features, where one can be chosen and the according attribute dialog will be prese...
Definition: qgsdualview.h:68
void formModeChanged(QgsAttributeEditorContext::Mode mode)
Emitted when the form changes mode.
void filterExpressionSet(const QString &expression, QgsAttributeForm::FilterType type)
Emitted when a filter expression is set using the view.
void toggleSearchMode(bool enabled)
Toggles whether search mode should be enabled in the form.
This class offers a dialog to change feature selections.
void setMessageBar(QgsMessageBar *messageBar)
Sets the message bar to display feedback from the dialog.
This class wraps a request for features to a vector layer (or directly its vector data provider).
void setSelectedFeatures(const QgsFeatureIds &ids)
Set the selected features.
const QgsFeatureIds & selectedFeatures()
Gets the selected features.
QgsFeatureSelectionDlg(QgsVectorLayer *vl, const QgsAttributeEditorContext &context, QWidget *parent=nullptr)
Constructor for QgsFeatureSelectionDlg.
void showEvent(QShowEvent *event) override
Make sure the dialog does not grow too much.
void keyPressEvent(QKeyEvent *evt) override
void panToSelected(QgsMapLayer *layer=nullptr)
Pan to the selected features of current ayer keeping same extent.
void zoomToSelected(QgsMapLayer *layer=nullptr)
Zoom to the extent of the selected features of provided map layer.
void setSelectedFeatures(const QgsFeatureIds &ids) override
Change selection to the new set of features.
const QgsFeatureIds & selectedFeatureIds() const override
Returns reference to identifiers of selected features.
Represents a vector layer which manages a vector based data sets.
Q_INVOKABLE void selectAll()
Select all the features.
Q_INVOKABLE void removeSelection()
Clear selection.
Q_INVOKABLE void invertSelection()
Selects not selected features and deselects selected ones.
QSet< QgsFeatureId > QgsFeatureIds
Definition: qgsfeatureid.h:37