- Qt 6.6
- Qt Graphs
- Graph Gallery
- Qt Graphs | Commercial or GPLv3

# Graph Gallery

     // Copyright (C) 2023 The Qt Company Ltd.
     // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

     #ifndef AXESINPUTHANDLER_H
     #define AXESINPUTHANDLER_H

     #include <QtGraphs/q3dinputhandler.h>
     #include <QtGraphs/qabstract3dgraph.h>
     #include <QtGraphs/qvalue3daxis.h>

     class AxesInputHandler : public Q3DInputHandler
     {
         Q_OBJECT

         enum InputState {
             StateNormal = 0,
             StateDraggingX,
             StateDraggingZ,
             StateDraggingY
         };

     public:
         explicit AxesInputHandler(QAbstract3DGraph *graph, QObject *parent = 0);

         inline void setAxes(QValue3DAxis *axisX, QValue3DAxis *axisZ, QValue3DAxis *axisY) {
             m_axisX = axisX;
             m_axisZ = axisZ;
             m_axisY = axisY;
         }

         inline void setDragSpeedModifier(float modifier) { m_speedModifier = modifier; }

         virtual void mousePressEvent(QMouseEvent *event, const QPoint &mousePos);
         virtual void mouseMoveEvent(QMouseEvent *event, const QPoint &mousePos);
         virtual void mouseReleaseEvent(QMouseEvent *event, const QPoint &mousePos);

     private:
         void handleElementSelected(QAbstract3DGraph::ElementType type);
         void handleAxisDragging();

     private:
         bool m_mousePressed = false;
         InputState m_state = StateNormal;
         QValue3DAxis *m_axisX = nullptr;
         QValue3DAxis *m_axisZ = nullptr;
         QValue3DAxis *m_axisY = nullptr;
         float m_speedModifier = 15.f;
     };

     #endif