page2
Geometry and variables specific for a sliding line
m_marginCursor
m_marginHorWidget
m_cursorRangeLen
m_slideLineHeight
m_xCursorTeacher
m_cursorHeight
The dotted vertical lines show the range where the cursor is allowed to move between. This ensures that there is always
at least one character to be seen to the left (right) of the cursor, in case one has to erase it by hitting backspace.
The coordinates need to be transformed for right-to-left writing, as explained later.
This is the visible area of this sliding line and essentially the part that is copied from the complete Teachers/Students text into the widget.
m_slideLineWidth