window_manualupdate.cpp Example File

simplewindow/window_manualupdate.cpp

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  #include "window_manualupdate.h"
  #include <QOpenGLContext>
  #include <Q3DSSurfaceViewer>
  #include <Q3DSPresentation>

  // Here the window implementation drives rendering by manually calling
  // Q3DSSurfaceViewer::update() as seen fit.

  // It also relies on the default of autoSize==true (meaning the rendering
  // is automatically following the QWindow size).

  ManualUpdateWindow::ManualUpdateWindow()
  {
      setSurfaceType(QSurface::OpenGLSurface);
      m_context = new QOpenGLContext(this);
      m_context->create();
  }

  void ManualUpdateWindow::update()
  {
      if (isExposed() && m_viewer) {
          m_viewer->update();
          // render continuously
          requestUpdate();
      }
  }

  bool ManualUpdateWindow::event(QEvent *e)
  {
      if (e->type() == QEvent::Expose || e->type() == QEvent::UpdateRequest)
          update();

      return QWindow::event(e);
  }

  void ManualUpdateWindow::keyPressEvent(QKeyEvent *e)
  {
      m_viewer->presentation()->keyPressEvent(e);
  }

  void ManualUpdateWindow::keyReleaseEvent(QKeyEvent *e)
  {
      m_viewer->presentation()->keyReleaseEvent(e);
  }

  void ManualUpdateWindow::mousePressEvent(QMouseEvent *e)
  {
      m_viewer->presentation()->mousePressEvent(e);
  }

  void ManualUpdateWindow::mouseMoveEvent(QMouseEvent *e)
  {
      // Moves must be forwarded even when no button is down; the
      // default QWindow behavior is just what we need in this respect.
      m_viewer->presentation()->mouseMoveEvent(e);
  }

  void ManualUpdateWindow::mouseReleaseEvent(QMouseEvent *e)
  {
      m_viewer->presentation()->mouseReleaseEvent(e);
  }

  void ManualUpdateWindow::mouseDoubleClickEvent(QMouseEvent *e)
  {
      m_viewer->presentation()->mouseDoubleClickEvent(e);
  }

  #if QT_CONFIG(wheelevent)
  void ManualUpdateWindow::wheelEvent(QWheelEvent *e)
  {
      m_viewer->presentation()->wheelEvent(e);
  }
  #endif