QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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qgsmaplayermodel.h
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1/***************************************************************************
2 qgsmaplayermodel.h
3 --------------------------------------
4 Date : 01.04.2014
5 Copyright : (C) 2014 Denis Rouzaud
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 QGSMAPLAYERMODEL_H
17#define QGSMAPLAYERMODEL_H
18
19#include <QAbstractItemModel>
20#include <QSortFilterProxyModel>
21#include <QStringList>
22#include <QIcon>
23
24#include "qgis_core.h"
25#include "qgis_sip.h"
26
27class QgsMapLayer;
28class QgsProject;
29
36class CORE_EXPORT QgsMapLayerModel : public QAbstractItemModel
37{
38 Q_OBJECT
39
40 Q_PROPERTY( bool allowEmptyLayer READ allowEmptyLayer WRITE setAllowEmptyLayer )
41 Q_PROPERTY( bool showCrs READ showCrs WRITE setShowCrs )
42 Q_PROPERTY( bool itemsCheckable READ itemsCheckable WRITE setItemsCheckable )
43 Q_PROPERTY( QStringList additionalItems READ additionalItems WRITE setAdditionalItems )
44
45 public:
46
47 // *INDENT-OFF*
48
56 {
57 LayerId SIP_MONKEYPATCH_COMPAT_NAME(LayerIdRole) = Qt::UserRole + 1,
58 Layer SIP_MONKEYPATCH_COMPAT_NAME(LayerRole),
59 Empty SIP_MONKEYPATCH_COMPAT_NAME(EmptyRole),
60 Additional SIP_MONKEYPATCH_COMPAT_NAME(AdditionalRole),
61 };
62 Q_ENUM( CustomRole )
63 // *INDENT-ON*
64
65
71 explicit QgsMapLayerModel( QObject *parent SIP_TRANSFERTHIS = nullptr, QgsProject *project = nullptr );
72
79 explicit QgsMapLayerModel( const QList<QgsMapLayer *> &layers, QObject *parent = nullptr, QgsProject *project = nullptr );
80
84 void setItemsCheckable( bool checkable );
85
91 void setProject( QgsProject *project );
92
99 void setItemsCanBeReordered( bool allow );
100
107 bool itemsCanBeReordered() const;
108
112 void checkAll( Qt::CheckState checkState );
113
121 void setAllowEmptyLayer( bool allowEmpty, const QString &text = QString(), const QIcon &icon = QIcon() );
122
127 bool allowEmptyLayer() const { return mAllowEmpty; }
128
133 void setShowCrs( bool showCrs );
134
139 bool showCrs() const { return mShowCrs; }
140
144 QList<QgsMapLayer *> layersChecked( Qt::CheckState checkState = Qt::Checked );
145
149 void setLayersChecked( const QList< QgsMapLayer * > &layers );
150
152 bool itemsCheckable() const { return mItemCheckable; }
153
158 QModelIndex indexFromLayer( QgsMapLayer *layer ) const;
159
164 QgsMapLayer *layerFromIndex( const QModelIndex &index ) const;
165
172 void setAdditionalItems( const QStringList &items );
173
178 QStringList additionalItems() const { return mAdditionalItems; }
179
189 void setAdditionalLayers( const QList<QgsMapLayer *> &layers );
190
197 QList< QgsMapLayer * > additionalLayers() const;
198
199 // QAbstractItemModel interface
200 QModelIndex index( int row, int column, const QModelIndex &parent = QModelIndex() ) const override;
201 QModelIndex parent( const QModelIndex &child ) const override;
202 int rowCount( const QModelIndex &parent = QModelIndex() ) const override;
203 int columnCount( const QModelIndex &parent = QModelIndex() ) const override;
204 QVariant data( const QModelIndex &index, int role = Qt::DisplayRole ) const override;
205 bool setData( const QModelIndex &index, const QVariant &value, int role = Qt::EditRole ) override;
206 Qt::ItemFlags flags( const QModelIndex &index ) const override;
207 bool insertRows( int row, int count, const QModelIndex &parent = QModelIndex() ) override;
208 bool removeRows( int row, int count, const QModelIndex &parent = QModelIndex() ) override;
209 QStringList mimeTypes() const override;
210 bool canDropMimeData( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent ) const override;
211 QMimeData *mimeData( const QModelIndexList &indexes ) const override;
212 bool dropMimeData( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent ) override;
213 Qt::DropActions supportedDropActions() const override;
214
220 QHash<int, QByteArray> roleNames() const override SIP_SKIP;
221
225 static QIcon iconForLayer( QgsMapLayer *layer );
226
227 protected slots:
228 void removeLayers( const QStringList &layerIds );
229 void addLayers( const QList<QgsMapLayer *> &layers );
230
231 protected:
232 QList<QgsMapLayer *> mLayers;
233 QList< QPointer<QgsMapLayer> > mAdditionalLayers;
234 QMap<QString, Qt::CheckState> mLayersChecked;
235 bool mItemCheckable = false;
236 bool mCanReorder = false;
237
238 QgsProject *mProject = nullptr;
239
240 private:
241
242 bool mAllowEmpty = false;
243 QString mEmptyText;
244 QIcon mEmptyIcon;
245 bool mShowCrs = false;
246 QStringList mAdditionalItems;
247};
248
249#endif // QGSMAPLAYERMODEL_H
The QgsMapLayerModel class is a model to display layers in widgets.
bool itemsCheckable() const
returns if the items can be checked or not
bool showCrs() const
Returns true if the model includes layer's CRS in the display role.
CustomRole
Custom model roles.
QStringList additionalItems() const
Returns the list of additional (non map layer) items included at the end of the model.
bool allowEmptyLayer() const
Returns true if the model allows the empty layer ("not set") choice.
Base class for all map layer types.
Definition qgsmaplayer.h:76
Encapsulates a QGIS project, including sets of map layers and their styles, layouts,...
Definition qgsproject.h:107
#define SIP_TRANSFERTHIS
Definition qgis_sip.h:53
#define SIP_SKIP
Definition qgis_sip.h:126
#define SIP_MONKEYPATCH_SCOPEENUM_UNNEST(OUTSIDE_CLASS, FORMERNAME)
Definition qgis_sip.h:271
#define SIP_MONKEYPATCH_COMPAT_NAME(FORMERNAME)
Definition qgis_sip.h:273