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Slide line widget geometry and corresponding member variables
Sliding widget width()
Sliding widget height()
m_marginHorWidget
m_marginHorWidget
m_marginVerWidget
m_marginVerWidget
m_slideLineDist
The slide line widget has essentially two rectangles inside, the upper one for the teacher text, the lower one for
the students text. The teacher's text, which will typically be longer then the rectangle, will slide from left to right
(or right to left for languages like hebrew) while the text is typed through. The sliding is done in such a way that at
the begin, when nothing has been typed yet the cursor is at the left side of the rectangle, and just reaches the
right side when the last character has been typed correctly. The students line slides similarly.
m_slideLineWidth