Qt 5.9 | Qt Data Visualization | Axis Range Dragging With Labels Example | axesinputhandler.h Example File

Qt 5.9.9 Reference Documentation

# axesinputhandler.h Example File

draggableaxes/axesinputhandler.h

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      #ifndef AXESINPUTHANDLER_H
      #define AXESINPUTHANDLER_H

      #include <QtDataVisualization/Q3DInputHandler>
      #include <QtDataVisualization/QAbstract3DGraph>
      #include <QtDataVisualization/QValue3DAxis>

      using namespace QtDataVisualization;

      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;
          InputState m_state;
          QValue3DAxis *m_axisX;
          QValue3DAxis *m_axisZ;
          QValue3DAxis *m_axisY;
          float m_speedModifier;
      };

      #endif