diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2014-05-20 23:08:15 -0400 |
---|---|---|
committer | Paul Davis <paul@linuxaudiosystems.com> | 2014-06-03 16:10:27 -0400 |
commit | 6019f06bdf919e1d95dd0912116cdec0834af8db (patch) | |
tree | be8d2e41e692c2e8a572f531b546efde67b1503f /waf | |
parent | fc9e6651dd804672822e06cbd4092c043dc8406d (diff) |
different approach to independent scrolling, involving ArdourCanvas::ScrollGroup
The idea now is that a scroll group item can be added to the canvas which will causes its children to scroll in either or both
directions (horizontal or vertical). There are few complications: the position() of the ScrollGroup is ambiguous depending
on whether you want it with scroll taken into account or not, so Item::canvas_position() was added, which defaults to
the same value as Item::position() but is overridden by ScrollGroup to return the position independent of scrolling. This
method is used when translating between item/canvas/window coordinate systems.
Note that the basic idea is that we MOVE the scroll group when a scroll happens. This mirrors what happens in the GnomeCanvas,
where Nick Mainsbridge came up with a great idea that allowed unification of the time bar and track canvases.
Diffstat (limited to 'waf')
0 files changed, 0 insertions, 0 deletions