qgsprojectionselectiontreewidget.h

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/***************************************************************************
 *   qgsprojectionselector.h                                               *
 *   Copyright (C) 2005 by Tim Sutton                                      *
 *   [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 QGSCRSSELECTOR_H
#define QGSCRSSELECTOR_H
 
#include "ui_qgsprojectionselectorbase.h"
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgscoordinatereferencesystem.h"
#include "qgscoordinatereferencesystemmodel.h"
#include "qgsrecentcoordinatereferencesystemsmodel.h"
 
#include <QIdentityProxyModel>
#include <QSet>
#include <QStringList>
#include <QStyledItemDelegate>
 
class QResizeEvent;
class QTreeWidgetItem;

// proxy to expand base recent crs model to three column model
class QgsRecentCoordinateReferenceSystemTableModel : public QgsRecentCoordinateReferenceSystemsProxyModel SIP_SKIP
{
    Q_OBJECT
  public:
    QgsRecentCoordinateReferenceSystemTableModel( QObject *parent );
    QVariant headerData( int section, Qt::Orientation orientation, int role ) const override;
    QVariant data( const QModelIndex &index, int role ) const override;
};
 
class RemoveRecentCrsDelegate : public QStyledItemDelegate SIP_SKIP
{
    Q_OBJECT
 
  public:
    RemoveRecentCrsDelegate( QObject *parent );
    bool eventFilter( QObject *obj, QEvent *event ) override;
 
  protected:
    void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const override;
 
  private:
    void setHoveredIndex( const QModelIndex &index );
 
    QModelIndex mHoveredIndex;
};
 


 
class GUI_EXPORT QgsProjectionSelectionTreeWidget : public QWidget, private Ui::QgsProjectionSelectorBase
{
    Q_OBJECT
 
  public:
    QgsProjectionSelectionTreeWidget(
      QWidget *parent SIP_TRANSFERTHIS = nullptr,
      QgsCoordinateReferenceSystemProxyModel::Filters filters = QgsCoordinateReferenceSystemProxyModel::FilterHorizontal | QgsCoordinateReferenceSystemProxyModel::FilterCompound
    );
 
    ~QgsProjectionSelectionTreeWidget() override;

    QgsCoordinateReferenceSystem crs() const;

    void setShowNoProjection( bool show );

    void setShowBoundsMap( bool show );

    bool showNoProjection() const;

    void setNotSetText( const QString &text );

    bool showBoundsMap() const;

    bool hasValidSelection() const;

    QgsRectangle previewRect() const;

    QgsCoordinateReferenceSystemProxyModel::Filters filters() const;

    void setFilters( QgsCoordinateReferenceSystemProxyModel::Filters filters );
 
  public slots:

    void setCrs( const QgsCoordinateReferenceSystem &crs );

    void setPreviewRect( const QgsRectangle &rect );

    void setOgcWmsCrsFilter( const QSet<QString> &crsFilter );

    Q_DECL_DEPRECATED void pushProjectionToFront() SIP_DEPRECATED;

    void clearRecentCrs();
 
  signals:

    void crsSelected();

    Q_DECL_DEPRECATED void initialized() SIP_DEPRECATED;

    void projectionDoubleClicked();

    void hasValidSelectionChanged( bool isValid );
 
  protected:
    // Used to manage column sizes
    void resizeEvent( QResizeEvent *event ) override;
 
    // Used to catch key presses on the recent projections list
    bool eventFilter( QObject *obj, QEvent *ev ) override;
 
  private:
    void loadUnknownCrs( const QgsCoordinateReferenceSystem &crs );
 
    void selectCrsByAuthId( const QString &authid );
 
    enum Roles
    {
      RoleDeprecated = Qt::UserRole,
      RoleWkt,
      RoleProj
    };
 
    QgsCoordinateReferenceSystemProxyModel *mCrsModel = nullptr;
    QgsRecentCoordinateReferenceSystemTableModel *mRecentCrsModel = nullptr;
 
    enum Columns
    {
      NameColumn,
      AuthidColumn,
      ClearColumn
    };
 
    bool mShowMap = true;
 
    bool mBlockSignals = false;
 
  private slots:
 
    void updateBoundsPreview();

    void lstCoordinateSystemsDoubleClicked( const QModelIndex &index );
    void lstRecentDoubleClicked( const QModelIndex &index );
    void lstRecentClicked( const QModelIndex &index );
    void lstCoordinateSystemsSelectionChanged( const QItemSelection &selected, const QItemSelection &deselected );
    void lstRecentSelectionChanged( const QItemSelection &selected, const QItemSelection &deselected );
 
    void removeRecentCrsItem( const QModelIndex &index );
};
 
#endif