Qt 5.8 | Qt Data Visualization | Textured Surface Example | custominputhandler.h Example File

Qt 5.8.0 Reference Documentation

# custominputhandler.h Example File

texturesurface/custominputhandler.h

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      ** Contact: https://www.qt.io/licensing/
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      ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
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      #ifndef CUSTOMINPUTHANDLER_H
      #define CUSTOMINPUTHANDLER_H

      #include <QtDataVisualization/Q3DInputHandler>
      #include <QtDataVisualization/QAbstract3DGraph>
      #include <QtDataVisualization/QValue3DAxis>
      #include "highlightseries.h"

      using namespace QtDataVisualization;

      class CustomInputHandler : public Q3DInputHandler
      {
          Q_OBJECT

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

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

          inline void setLimits(float min, float max, float minRange) {
              m_areaMinValue = min;
              m_areaMaxValue = max;
              m_axisXMinValue = m_areaMinValue;
              m_axisXMaxValue = m_areaMaxValue;
              m_axisZMinValue = m_areaMinValue;
              m_axisZMaxValue = m_areaMaxValue;
              m_axisXMinRange = minRange;
              m_axisZMinRange = minRange;
          }
          inline void setAxes(QValue3DAxis *axisX, QValue3DAxis *axisY, QValue3DAxis *axisZ) {
              m_axisX = axisX;
              m_axisY = axisY;
              m_axisZ = axisZ;
          }
          inline void setAspectRatio(float ratio) { m_aspectRatio = ratio; }
          inline void setHighlightSeries(HighlightSeries *series) { m_highlight = series; }
          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);
          virtual void wheelEvent(QWheelEvent *event);

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

      private:
          HighlightSeries *m_highlight;
          bool m_mousePressed;
          InputState m_state;
          QValue3DAxis *m_axisX;
          QValue3DAxis *m_axisY;
          QValue3DAxis *m_axisZ;
          float m_speedModifier;
          float m_aspectRatio;
          float m_axisXMinValue;
          float m_axisXMaxValue;
          float m_axisXMinRange;
          float m_axisZMinValue;
          float m_axisZMaxValue;
          float m_axisZMinRange;
          float m_areaMinValue;
          float m_areaMaxValue;
      };

      #endif