qgsmaplayercombobox.h

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/***************************************************************************
   qgsmaplayercombobox.h
    --------------------------------------
   Date                 : 01.04.2014
   Copyright            : (C) 2014 Denis Rouzaud
   Email                : [email protected]
***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************/
 
#ifndef QGSMAPLAYERCOMBOBOX_H
#define QGSMAPLAYERCOMBOBOX_H
 
#include <QComboBox>
 
#include "qgsmaplayerproxymodel.h"
#include "qgis_gui.h"
 
#include "qgis_sip.h"
 
class QgsMapLayer;
class QgsVectorLayer;
 
class GUI_EXPORT QgsMapLayerComboBox : public QComboBox
{
    Q_OBJECT
    Q_PROPERTY( QgsMapLayerProxyModel::Filters filters READ filters WRITE setFilters )
    Q_PROPERTY( bool allowEmptyLayer READ allowEmptyLayer WRITE setAllowEmptyLayer )
    Q_PROPERTY( bool showCrs READ showCrs WRITE setShowCrs )
    Q_PROPERTY( QStringList excludedProviders READ excludedProviders WRITE setExcludedProviders )
 
  public:
 
    explicit QgsMapLayerComboBox( QWidget *parent SIP_TRANSFERTHIS = nullptr );
 
    void setFilters( QgsMapLayerProxyModel::Filters filters ) { mProxyModel->setFilters( filters ); }
 
    QgsMapLayerProxyModel::Filters filters() const { return mProxyModel->filters(); }
 
    void setExceptedLayerList( const QList<QgsMapLayer *> &layerList ) { mProxyModel->setExceptedLayerList( layerList );}
 
    QList<QgsMapLayer *> exceptedLayerList() const {return mProxyModel->exceptedLayerList();}
 
    void setExcludedProviders( const QStringList &providers );
 
    QStringList excludedProviders() const;
 
    void setAllowEmptyLayer( bool allowEmpty, const QString &text = QString(), const QIcon &icon = QIcon() );
 
    bool allowEmptyLayer() const;
 
    void setShowCrs( bool showCrs );
 
    bool showCrs() const;
 
    void setAdditionalItems( const QStringList &items );
 
    QStringList additionalItems() const;
 
    void setAdditionalLayers( const QList<QgsMapLayer *> &layers );
 
    QList< QgsMapLayer * > additionalLayers() const;
 
    QgsMapLayer *currentLayer() const;
 
    QgsMapLayer *layer( int layerIndex ) const;
 
  public slots:
    void setLayer( QgsMapLayer *layer );
 
  signals:
    void layerChanged( QgsMapLayer *layer );
 
  protected:
 
    void dragEnterEvent( QDragEnterEvent *event ) override;
    void dragLeaveEvent( QDragLeaveEvent *event ) override;
    void dropEvent( QDropEvent *event ) override;
    void paintEvent( QPaintEvent *e ) override;
 
  protected slots:
    void indexChanged( int i );
    void rowsChanged();
 
  private:
    QgsMapLayerProxyModel *mProxyModel = nullptr;
    bool mDragActive = false;
    bool mHighlight = false;
 
    QgsMapLayer *compatibleMapLayerFromMimeData( const QMimeData *data ) const;
 
    friend class QgsProcessingMapLayerComboBox;
};
 
#endif // QGSMAPLAYERCOMBOBOX_H