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| author |  Lubomir I. Ivanov <neolit123@gmail.com> | 2013-07-04 23:55:27 +0300 |
|---|---|---|
| committer |  Dirk Hohndel <dirk@hohndel.org> | 2013-07-04 22:59:46 -0700 |
| commit | c7f8ada4ff5e84e2ea52e387806c640eee05f45f (patch) | |
| tree | 51cc2989d029f67cb3837e802bc3dcf61735fbbd /qt-ui/models.cpp | |
| parent | 1257adfd267e04b3dbe149c9c5874132dc70ec62 (diff) | |
| download | subsurface-c7f8ada4ff5e84e2ea52e387806c640eee05f45f.tar.gz | |
Profile: attempt on better zoom and pan logic
QGraphicsView::AnchorUnderMouse does not work for
Qt 4.8.1 on Ubuntu 12.04 and if the mouseMoveEvent
overload is disabled it practically can be seen that
the anchor point is [0, 0] instead of the mouse location.
After a suggestion found on the web this patch attempts
to use the hidden scroll bars to calculate reposition
on pan and zoom *near the mouse cursor.
On the other hand QAbstactSlider (QScrollBar) class
strangly uses negative offsets for minimum scroll
position, which makes the implementation even more
ugly.
[*near] because it's not that accurate!
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Diffstat (limited to 'qt-ui/models.cpp')
0 files changed, 0 insertions, 0 deletions