qgsprojectionselectionwidget.h

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/***************************************************************************
    qgsprojectionselectionwidget.h
     --------------------------------------
    Date                 : 05.01.2015
    Copyright            : (C) 2015 Denis Rouzaud
    Email                : denis.rouzaud@gmail.com
 ***************************************************************************
 *                                                                         *
 *   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 QGSPROJECTIONSELECTIONWIDGET_H
#define QGSPROJECTIONSELECTIONWIDGET_H
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgscoordinatereferencesystem.h"
#include "qgscoordinatereferencesystemmodel.h"
 
#include <QComboBox>
#include <QConcatenateTablesProxyModel>
#include <QLineEdit>
#include <QPointer>
#include <QToolButton>
#include <QWidget>
 
class QgsMapLayer;
class QgsHighlightableComboBox;
class QgsCrsSelectionWidget;
class QLabel;
class QgsMapLayer;
class QgsRecentCoordinateReferenceSystemsProxyModel;
class CombinedCoordinateReferenceSystemsProxyModel;

class GUI_EXPORT QgsProjectionSelectionWidget : public QWidget
{
    Q_OBJECT
  public:
    enum CrsOption SIP_ENUM_BASETYPE( IntFlag )
    {
      Invalid = 1 << 0,    
      LayerCrs = 1 << 1,   
      ProjectCrs = 1 << 2, 
      CurrentCrs = 1 << 3, 
      DefaultCrs = 1 << 4, 
      RecentCrs = 1 << 5,  
      CrsNotSet = 1 << 6,  
    };

    SIP_SKIP Q_DECLARE_FLAGS( CrsOptions, CrsOption )
 
      
      explicit QgsProjectionSelectionWidget(
        QWidget *parent SIP_TRANSFERTHIS = nullptr,
        QgsCoordinateReferenceSystemProxyModel::Filters filters = QgsCoordinateReferenceSystemProxyModel::FilterHorizontal | QgsCoordinateReferenceSystemProxyModel::FilterCompound
      );

    QgsCoordinateReferenceSystem crs() const;

    void setOptionVisible( CrsOption option, bool visible );

    bool optionVisible( CrsOption option ) const;

    void setNotSetText( const QString &text );

    void setMessage( const QString &text );

    static QString crsOptionText( const QgsCoordinateReferenceSystem &crs ) SIP_SKIP;

    bool showAccuracyWarnings() const;

    void setShowAccuracyWarnings( bool show );

    void setSourceEnsemble( const QString &ensemble );

    QString sourceEnsemble() const;

    void setDialogTitle( const QString &title );

    QString dialogTitle() const;

    void setFilter( const QList<QgsCoordinateReferenceSystem> &crses );

    QgsCoordinateReferenceSystemProxyModel::Filters filters() const;

    void setFilters( QgsCoordinateReferenceSystemProxyModel::Filters filters );

    void setAllowTopocentricCrs( bool allow );
 
  signals:

    void crsChanged( const QgsCoordinateReferenceSystem &crs );

    void cleared();
 
  public slots:

    void setCrs( const QgsCoordinateReferenceSystem &crs );

    void setLayerCrs( const QgsCoordinateReferenceSystem &crs );

    void selectCrs();
 
  protected:
    void dragEnterEvent( QDragEnterEvent *event ) override;
    void dragLeaveEvent( QDragLeaveEvent *event ) override;
    void dropEvent( QDropEvent *event ) override;
 
  private:
    CombinedCoordinateReferenceSystemsProxyModel *mModel = nullptr;
 
    QgsHighlightableComboBox *mCrsComboBox = nullptr;
    QToolButton *mButton = nullptr;
 
    QString mMessage;
 
    bool mAllowTopocentricCrs = true;
    bool mShowAccuracyWarnings = false;
    QString mSourceEnsemble;
 
    QWidget *mWarningLabelContainer = nullptr;
    QLabel *mWarningLabel = nullptr;
 
    QPointer<QgsCrsSelectionWidget> mActivePanel;
    int mIgnorePanelSignals = 0;
 
    QString mDialogTitle;
 
    void updateTooltip();
 
    QgsMapLayer *mapLayerFromMimeData( const QMimeData *data ) const;
 
  private slots:
 
    void comboIndexChanged( int idx );
    void updateWarning();
};
 
SIP_SKIP Q_DECLARE_OPERATORS_FOR_FLAGS( QgsProjectionSelectionWidget::CrsOptions );

 
class StandardCoordinateReferenceSystemsModel : public QAbstractItemModel SIP_SKIP
{
    Q_OBJECT
 
  public:
    enum Role
    {
      // values copied from QgsRecentCoordinateReferenceSystemsModel
      RoleCrs = Qt::UserRole, 
      // new values
      RoleOption = RoleCrs + 100, 
    };
 
    StandardCoordinateReferenceSystemsModel( QObject *parent SIP_TRANSFERTHIS = nullptr );
 
    Qt::ItemFlags flags( const QModelIndex &index ) const override;
    QVariant data( const QModelIndex &index, int role ) const override;
    int rowCount( const QModelIndex &parent = QModelIndex() ) const override;
    int columnCount( const QModelIndex & = QModelIndex() ) const override;
    QModelIndex index( int row, int column, const QModelIndex &parent = QModelIndex() ) const override;
    QModelIndex parent( const QModelIndex &index ) const override;
 
    QgsCoordinateReferenceSystem crs( const QModelIndex &index ) const;
    QgsProjectionSelectionWidget::CrsOption optionForIndex( const QModelIndex &index ) const;
    QModelIndex indexForOption( QgsProjectionSelectionWidget::CrsOption option ) const;
 
    void setLayerCrs( const QgsCoordinateReferenceSystem &crs );
    void setCurrentCrs( const QgsCoordinateReferenceSystem &crs );
    void setNotSetText( const QString &text );
    QString notSetText() const { return mNotSetText; }
    QgsCoordinateReferenceSystem currentCrs() const { return mCurrentCrs; }
 
  private:
    QgsProjectionSelectionWidget::CrsOptions mOptions;
    QgsCoordinateReferenceSystem mCurrentCrs;
    QgsCoordinateReferenceSystem mProjectCrs;
    QgsCoordinateReferenceSystem mDefaultCrs;
    QgsCoordinateReferenceSystem mLayerCrs;
 
    QString mNotSetText;
};
 
class CombinedCoordinateReferenceSystemsModel : public QConcatenateTablesProxyModel SIP_SKIP
{
    Q_OBJECT
 
  public:
    CombinedCoordinateReferenceSystemsModel( QObject *parent );
    void setNotSetText( const QString &text );
    QString notSetText() const;
    QgsCoordinateReferenceSystem currentCrs() const;
    StandardCoordinateReferenceSystemsModel *standardModel() { return mStandardModel; }
 
  private:
    StandardCoordinateReferenceSystemsModel *mStandardModel = nullptr;
    QgsRecentCoordinateReferenceSystemsProxyModel *mRecentModel = nullptr;
};
 
class CombinedCoordinateReferenceSystemsProxyModel : public QSortFilterProxyModel SIP_SKIP
{
    Q_OBJECT
 
  public:
    CombinedCoordinateReferenceSystemsProxyModel( QObject *parent );
    bool filterAcceptsRow( int sourceRow, const QModelIndex &sourceParent ) const override;
    void setLayerCrs( const QgsCoordinateReferenceSystem &crs );
    void setCurrentCrs( const QgsCoordinateReferenceSystem &crs );
    void setFilters( QgsCoordinateReferenceSystemProxyModel::Filters filters );
    QgsCoordinateReferenceSystemProxyModel::Filters filters() const;
 
    void setFilteredCrs( const QList<QgsCoordinateReferenceSystem> &crses );
    QList<QgsCoordinateReferenceSystem> filteredCrs() const { return mFilteredCrs; }
 
    void setOption( QgsProjectionSelectionWidget::CrsOption option, bool enabled );
    CombinedCoordinateReferenceSystemsModel *combinedModel() const { return mModel; }
 
  private:
    CombinedCoordinateReferenceSystemsModel *mModel = nullptr;
    QgsProjectionSelectionWidget::CrsOptions mVisibleOptions;
 
    QList<QgsCoordinateReferenceSystem> mFilteredCrs;
 
    QgsCoordinateReferenceSystemProxyModel::Filters mFilters = QgsCoordinateReferenceSystemProxyModel::FilterHorizontal | QgsCoordinateReferenceSystemProxyModel::FilterCompound;
};

 
#endif // QGSPROJECTIONSELECTIONWIDGET_H