compositor.h Example File

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  #ifndef WINDOWCOMPOSITOR_H
  #define WINDOWCOMPOSITOR_H

  #include <QtWaylandCompositor/QWaylandCompositor>
  #include <QtWaylandCompositor/QWaylandSurface>
  #include <QtWaylandCompositor/QWaylandView>
  #include <QtWaylandCompositor/QWaylandWlShellSurface>
  #include <QtWaylandCompositor/QWaylandXdgSurface>
  #include <QTimer>

  class QWaylandWlShell;
  class QWaylandWlShellSurface;
  class QWaylandXdgShell;

  class View : public QWaylandView
  {
      Q_OBJECT
  public:
      View();
      GLuint getTexture(GLenum *target = 0);
      QPointF position() const { return m_position; }
      void setPosition(const QPointF &pos) { m_position = pos; }
      bool isCursor() const;
      bool hasShell() const { return m_wlShellSurface; }
      void setParentView(View *parent) { m_parentView = parent; }
      View *parentView() const { return m_parentView; }
      QPointF parentPosition() const { return m_parentView ? (m_parentView->position() + m_parentView->parentPosition()) : QPointF(); }
      QSize windowSize() { return m_xdgSurface ? m_xdgSurface->windowGeometry().size() : surface()->size(); }
      QPoint offset() const { return m_offset; }

  private:
      friend class Compositor;
      GLenum m_textureTarget;
      GLuint m_texture;
      QPointF m_position;
      QWaylandWlShellSurface *m_wlShellSurface;
      QWaylandXdgSurface *m_xdgSurface;
      QWaylandXdgPopup *m_xdgPopup;
      View *m_parentView;
      QPoint m_offset;

  public slots:
      void onXdgSetMaximized();
      void onXdgUnsetMaximized();
      void onXdgSetFullscreen(QWaylandOutput *output);
      void onXdgUnsetFullscreen();
      void onOffsetForNextFrame(const QPoint &offset);
  };

  class Compositor : public QWaylandCompositor
  {
      Q_OBJECT
  public:
      Compositor(QWindow *window);
      ~Compositor();
      void create() Q_DECL_OVERRIDE;

      void startRender();
      void endRender();

      QList<View*> views() const { return m_views; }
      void raise(View *view);

      void handleMouseEvent(QWaylandView *target, QMouseEvent *me);
      void handleResize(View *target, const QSize &initialSize, const QPoint &delta, int edge);
      void handleDrag(View *target, QMouseEvent *me);

      bool popupActive() const { return !m_popupViews.isEmpty(); }
      void closePopups();
  protected:
      void adjustCursorSurface(QWaylandSurface *surface, int hotspotX, int hotspotY);

  signals:
      void startMove();
      void startResize(int edge, bool anchored);
      void dragStarted(View *dragIcon);
      void frameOffset(const QPoint &offset);

  private slots:
      void surfaceMappedChanged();
      void surfaceDestroyed();
      void viewSurfaceDestroyed();
      void onStartMove();
      void onWlStartResize(QWaylandInputDevice *inputDevice, QWaylandWlShellSurface::ResizeEdge edges);
      void onXdgStartResize(QWaylandInputDevice *inputDevice, QWaylandXdgSurface::ResizeEdge edges);

      void startDrag();

      void triggerRender();

      void onSurfaceCreated(QWaylandSurface *surface);
      void onWlShellSurfaceCreated(QWaylandWlShellSurface *wlShellSurface);
      void onXdgSurfaceCreated(QWaylandXdgSurface *xdgSurface);
      void onCreateXdgPopup(QWaylandSurface *surface, QWaylandSurface *parent, QWaylandInputDevice *inputDevice,
                            const QPoint &position, const QWaylandResource &resource);
      void onSetTransient(QWaylandSurface *parentSurface, const QPoint &relativeToParent, QWaylandWlShellSurface::FocusPolicy focusPolicy);
      void onSetPopup(QWaylandInputDevice *inputDevice, QWaylandSurface *parent, const QPoint &relativeToParent);

      void onSubsurfaceChanged(QWaylandSurface *child, QWaylandSurface *parent);
      void onSubsurfacePositionChanged(const QPoint &position);

      void updateCursor();
  private:
      View *findView(const QWaylandSurface *s) const;
      QWindow *m_window;
      QList<View*> m_views;
      QList<View*> m_popupViews;
      QWaylandWlShell *m_wlShell;
      QWaylandXdgShell *m_xdgShell;
      QWaylandView m_cursorView;
      int m_cursorHotspotX;
      int m_cursorHotspotY;
  };


  #endif // WINDOWCOMPOSITOR_H