tdf#140207 Qt downscale the ExtTextInputPos

Qt reports the unscaled pixel values to the IM, so simply divide
all values reported by SalEvent::ExtTextInputPos by the window's
scale factor. This correctly positions the IM window on a scaled
LO window.

Change-Id: Ia639ee3e5fc0e47f7017896b34730bbda7f06a16
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110945
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
(cherry picked from commit 41cffc379259fec626a282ca243a9750d96d1c63)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110915
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
(cherry picked from commit 61bf6b4d90aa1d37009b397e44fe39c9c5b06afd)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110920
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
diff --git a/vcl/qt5/Qt5Widget.cxx b/vcl/qt5/Qt5Widget.cxx
index 0ef305f..92fd43a 100644
--- a/vcl/qt5/Qt5Widget.cxx
+++ b/vcl/qt5/Qt5Widget.cxx
@@ -680,10 +680,11 @@ QVariant Qt5Widget::inputMethodQuery(Qt::InputMethodQuery property) const
        }
        case Qt::ImCursorRectangle:
        {
            const qreal fRatio = m_rFrame.devicePixelRatioF();
            SalExtTextInputPosEvent aPosEvent;
            m_rFrame.CallCallback(SalEvent::ExtTextInputPos, &aPosEvent);
            return QVariant(
                QRect(aPosEvent.mnX, aPosEvent.mnY, aPosEvent.mnWidth, aPosEvent.mnHeight));
            return QVariant(QRect(aPosEvent.mnX / fRatio, aPosEvent.mnY / fRatio,
                                  aPosEvent.mnWidth / fRatio, aPosEvent.mnHeight / fRatio));
        }
        case Qt::ImAnchorPosition:
        {