dispatchers in mathed and text only do local work, i.e. only try to
move the cursor with their local knowledge, not globally as before in
the Cursor::goUpDown function before. The old approach used one of
brutefind functions as a last way out to really move the cursor up or
down. The result was some strange behavior that the nearest inset was
selected when jumping from math to text, not one in the next line.
2. removed LFUN_FINISHED_UP/DOWN, as there seem to be no effect and it
seems to be obsolete.
3. target_x is working again, mainly by adding a textTargetOffset_
member to the Cursor which keeps the difference between the target_x
and the actual position of the cursor on screen. As long as
pos+offset=target is fulfilled the target_x is not touched and the
cursor keep the column while going up/down.
4. moved the text cursor up/down code to the Cursor class, in analogy
to the mathed code.
5. For 1 it is necessary to know the cursor position before the
dispatch. So this data is added to the Cursor.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18569 a592a061-630c-0410-9148-cb99ea01b6c8
