Fix region reporting in Maliit Keyboard
Fix region reporting in Maliit Keyboard

RevBy: TrustMe
The coordinate mapping in the QGraphicsScene did not work reliably. Switched to
a simple mapping function, depending on layout orientation.

KDE/plasma-maliit-plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,KDE/plasma-maliit-plugins,KDE/plasma-maliit-plugins,maliit/plugins,maliit/plugins,develersrl/maliit-demo-qml,maliit/plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,RHawkeyed/plugins,RHawkeyed/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,maliit/plugins