qgsmodelviewtoollink.h

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/***************************************************************************
                             qgsmodelviewtoollink.h
                             ----------------------------------
    Date                 : January 2024
    Copyright            : (C) 2024 Valentin Buira
    Email                : valentin dot buira at gmail dot 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 QGSMODELVIEWTOOLLINK_H
#define QGSMODELVIEWTOOLLINK_H
 
#include <memory>
 
#include "qgis_gui.h"
#include "qgis_sip.h"
#include "qgsmodelviewtool.h"
 
#define SIP_NO_FILE
 
class QgsModelViewBezierRubberBand;
class QgsModelDesignerSocketGraphicItem;
class QgsProcessingModelComponent;

class GUI_EXPORT QgsModelViewToolLink : public QgsModelViewTool
{
    Q_OBJECT
 
  public:

    QgsModelViewToolLink( QgsModelGraphicsView *view SIP_TRANSFERTHIS );
 
    void modelMoveEvent( QgsModelViewMouseEvent *event ) override;
    void modelReleaseEvent( QgsModelViewMouseEvent *event ) override;
    bool allowItemInteraction() override;
    void activate() override;
    void deactivate() override;

    void setFromSocket( QgsModelDesignerSocketGraphicItem *socket );
 
  signals:

    void requestRebuildRequired();
 
  private:
    std::unique_ptr<QgsModelViewBezierRubberBand> mBezierRubberBand;
    QgsModelDesignerSocketGraphicItem *mFromSocket = nullptr;
    QgsModelDesignerSocketGraphicItem *mToSocket = nullptr;
 
    QgsModelDesignerSocketGraphicItem *mLastHoveredSocket = nullptr;
 
    /* Used to return to select tool */
    QPointer<QgsModelViewTool> mPreviousViewTool;
 
    // These two are populated when clicking on an input socket that is already connected
    // We use them to restore the connection when aborting, or to skip the undo step when the same input is selected
    QString mPreviousInputChildId;
    int mPreviousInputSocketNumber = -1;
};
#endif // QGSMODELVIEWTOOLLINK_H