diagrameventaddimage.h

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/*
        Copyright 2006-2026 The QElectroTech Team
        This file is part of QElectroTech.
 
        QElectroTech 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.
 
        QElectroTech is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
        GNU General Public License for more details.
 
        You should have received a copy of the GNU General Public License
        along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DIAGRAMEVENTADDIMAGE_H
#define DIAGRAMEVENTADDIMAGE_H
 
#include "diagrameventinterface.h"
 
#include <QPointF>
 
class Diagram;
class DiagramImageItem;

class DiagramEventAddImage : public DiagramEventInterface
{
        Q_OBJECT
 
        public:
                DiagramEventAddImage(Diagram *diagram);
                ~DiagramEventAddImage() override;
 
                void mousePressEvent       (QGraphicsSceneMouseEvent *event) override;
                void mouseMoveEvent        (QGraphicsSceneMouseEvent *event) override;
                void mouseReleaseEvent     (QGraphicsSceneMouseEvent *event) override;
                void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event) override;
                void wheelEvent            (QGraphicsSceneWheelEvent *event) override;
 
                 bool isNull () const;
        private:
                void openDialog();
                void showHint() const;
 
                DiagramImageItem *m_image;
                bool m_is_added;
                bool m_pressed = false;    // left button held: dragging out a size, not just positioning
                bool m_resize_engaged = false;   // latched once the drag threshold is crossed, matching the pen tool's own curve-drag threshold convention -- so dragging out and back near the start point doesn't "snap back" to original size before release
                QPointF m_press_pos;       // scene position of the left-button press, the resize anchor
};
 
#endif // DIAGRAMEVENTADDIMAGE_H