QCursor: Associate cursor with screen.

- Introduce cursor() accessor to QPlatformScreen.
- Remove screen member of QPlatformCursor (a
  cursor can be shared by multiple screens
  of a virtual desktop).
- Add QCursor::pos()/ QCursor::setPos() taking
  a QScreen-parameter, use primaryScreen() for
  old overloads.  QCursor::pos() can then query
  the platform cursor for the position and return
  the position even if the mouse position is outside
  the windows owned by the Qt application.
- Fix tests

Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

Task-number: QTBUG-22457
Task-number: QTBUG-22565
Task-number: QTBUG-20753
Change-Id: Ia69f37343f95772e934eab1cd806bd54cbdbbe51
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/plugins/platforms/xlib/qxlibcursor.h b/src/plugins/platforms/xlib/qxlibcursor.h
index 92e42ac7a1..0056aa9554 100644
--- a/src/plugins/platforms/xlib/qxlibcursor.h
+++ b/src/plugins/platforms/xlib/qxlibcursor.h
@@ -48,7 +48,7 @@
 
 QT_BEGIN_NAMESPACE
 
-class QXlibCursor : QPlatformCursor
+class QXlibCursor : public QPlatformCursor
 {
 public:
     QXlibCursor(QXlibScreen *screen);
@@ -59,8 +59,9 @@ private:
     Cursor createCursorBitmap(QCursor * cursor);
     Cursor createCursorShape(int cshape);
 
-    QXlibScreen *testLiteScreen() const;
+    QXlibScreen *testLiteScreen() const { return m_screen; }
     QMap<int, Cursor> cursorMap;
+    QXlibScreen *m_screen;
 };
 
 QT_END_NAMESPACE