GraphicsView.h

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// Copyright 2015 - 2026, GIBIS-UNIFESP and the wiRedPanda contributors
// SPDX-License-Identifier: GPL-3.0-or-later

 
#pragma once
 
#include <QGraphicsView>

class GraphicsView : public QGraphicsView
{
    Q_OBJECT
 
public:
    // --- Lifecycle ---

    explicit GraphicsView(QWidget *parent = nullptr);
 
    // --- Zoom ---

    bool canZoomIn() const;

    bool canZoomOut() const;

    void resetZoom();

    void zoomToFit();

    void zoomIn();

    void zoomOut();
 
    // --- Settings ---

    void setFastMode(const bool fastMode);
 
signals:
    void zoomChanged();
 
protected:
    // --- Event handlers ---

    void paintEvent(QPaintEvent *event) override;
 
    void keyPressEvent(QKeyEvent *event) override;
    void keyReleaseEvent(QKeyEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void wheelEvent(QWheelEvent *event) override;
 
    // --- Members ---
 
    int m_zoomLevel = 0;        
 
private:
    // --- Members ---
 
    bool m_pan = false;    
    bool m_space = false;  
    int m_panStartX = 0;   
    int m_panStartY = 0;   
};