Fixes: vertical touchpoint offset
Fixes: vertical touchpoint offset

RevBy: Pekka Vuorela, Jarno Malmari
Details: don't go over the widget bottom.

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