Add support for bitmap cursors

So far QtWayland did not support custom bitmap/pixmap QCursors.
This change adds support for them by creating a QWaylandShmBuffer and
copying the pixmap data into that buffer. The internal API to set
cursors images is changed to not only rely on wl_cursor_image, but also
allow to just set the buffer with a specific size and a hot spot.

The created WaylandShmBuffer is passed around as a shared pointer, so
that it can be automatically cleaned up once the cursor image is no
longer used on any seat.

Task-number: QTBUG-51604
Change-Id: I1f1ee87f03186c3d564468d3e8ea2a3141d7e2fb
Reviewed-by: Giulio Camuffo <giulio.camuffo@kdab.com>
Reviewed-by: Johan Helsing <johan.helsing@theqtcompany.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/client/qwaylandinputdevice_p.h b/src/client/qwaylandinputdevice_p.h
index 8bfb45cd4..508b67078 100644
--- a/src/client/qwaylandinputdevice_p.h
+++ b/src/client/qwaylandinputdevice_p.h
@@ -93,7 +93,10 @@ public:
     struct ::wl_seat *wl_seat() { return QtWayland::wl_seat::object(); }
 
     void setCursor(Qt::CursorShape cursor, QWaylandScreen *screen);
+    void setCursor(const QCursor &cursor, QWaylandScreen *screen);
     void setCursor(struct wl_buffer *buffer, struct ::wl_cursor_image *image);
+    void setCursor(struct wl_buffer *buffer, const QPoint &hotSpot, const QSize &size);
+    void setCursor(const QSharedPointer<QWaylandBuffer> &buffer, const QPoint &hotSpot);
     void handleWindowDestroyed(QWaylandWindow *window);
 
     void setDataDevice(QWaylandDataDevice *device);
@@ -137,6 +140,8 @@ private:
 
     QTouchDevice *mTouchDevice;
 
+    QSharedPointer<QWaylandBuffer> mPixmapCursor;
+
     friend class QWaylandTouchExtension;
     friend class QWaylandQtKeyExtension;
 };