compositor.h Example File

qwindow-compositor/compositor.h
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 #ifndef WINDOWCOMPOSITOR_H
 #define WINDOWCOMPOSITOR_H

 #include <QtWaylandCompositor/QWaylandCompositor>
 #include <QtWaylandCompositor/QWaylandSurface>
 #include <QtWaylandCompositor/QWaylandView>
 #include <QtWaylandCompositor/QWaylandWlShellSurface>
 #include <QtWaylandCompositor/QWaylandXdgSurfaceV5>
 #include <QTimer>
 #include <QOpenGLTextureBlitter>

 class QWaylandWlShell;
 class QWaylandWlShellSurface;
 class QWaylandXdgShellV5;
 class QOpenGLTexture;
 class Compositor;

 class View : public QWaylandView
 {
     Q_OBJECT
 public:
     View(Compositor *compositor);
     QOpenGLTexture *getTexture();
     QOpenGLTextureBlitter::Origin textureOrigin() const;
     QPointF position() const { return m_position; }
     void setPosition(const QPointF &pos) { m_position = pos; }
     QSize size() const;
     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() ? surface()->size() : m_size; }
     QPoint offset() const { return m_offset; }

     qreal animationFactor() const {return m_animationFactor; }
     void setAnimationFactor(qreal f) {m_animationFactor = f; }

 signals:
     void animationDone();

 protected:
     void timerEvent(QTimerEvent *event) override;

 private:
     friend class Compositor;
     Compositor *m_compositor = nullptr;
     GLenum m_textureTarget = GL_TEXTURE_2D;
     QOpenGLTexture *m_texture = nullptr;
     QOpenGLTextureBlitter::Origin m_origin;
     QPointF m_position;
     QSize m_size;
     QWaylandWlShellSurface *m_wlShellSurface = nullptr;
     QWaylandXdgSurfaceV5 *m_xdgSurface = nullptr;
     QWaylandXdgPopupV5 *m_xdgPopup = nullptr;
     View *m_parentView = nullptr;
     QPoint m_offset;
     qreal m_animationFactor = 1.0;
     QBasicTimer m_animationTimer;
     bool m_animationCountUp;

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

     void startAnimation(bool countUp);
     void cancelAnimation();
 };

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

     QWaylandClient *popupClient() const;
     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);

 public slots:
     void triggerRender();

 private slots:
     void surfaceHasContentChanged();
     void surfaceDestroyed();
     void viewSurfaceDestroyed();
     void onStartMove();
     void onWlStartResize(QWaylandSeat *seat, QWaylandWlShellSurface::ResizeEdge edges);
     void onXdgStartResize(QWaylandSeat *seat, QWaylandXdgSurfaceV5::ResizeEdge edges);

     void startDrag();

     void onSurfaceCreated(QWaylandSurface *surface);
     void onWlShellSurfaceCreated(QWaylandWlShellSurface *wlShellSurface);
     void onXdgSurfaceCreated(QWaylandXdgSurfaceV5 *xdgSurface);
     void onXdgPopupRequested(QWaylandSurface *surface, QWaylandSurface *parent, QWaylandSeat *seat,
                              const QPoint &position, const QWaylandResource &resource);
     void onSetTransient(QWaylandSurface *parentSurface, const QPoint &relativeToParent, bool inactive);
     void onSetPopup(QWaylandSeat *seat, QWaylandSurface *parent, const QPoint &relativeToParent);

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

     void updateCursor();
     void viewAnimationDone();
 private:
     View *findView(const QWaylandSurface *s) const;
     QWindow *m_window = nullptr;
     QList<View*> m_views;
     QWaylandWlShell *m_wlShell = nullptr;
     QWaylandXdgShellV5 *m_xdgShell = nullptr;
     QWaylandView m_cursorView;
     int m_cursorHotspotX;
     int m_cursorHotspotY;
 };


 #endif // WINDOWCOMPOSITOR_H