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 /libs/canvas/wscript | |
| 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 'libs/canvas/wscript')
| -rw-r--r-- | libs/canvas/wscript | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libs/canvas/wscript b/libs/canvas/wscript index 913f8298fa..d0cbfc882f 100644 --- a/libs/canvas/wscript +++ b/libs/canvas/wscript @@ -50,6 +50,7 @@ canvas_sources = [ 'polygon.cc', 'rectangle.cc', 'root_group.cc', + 'scroll_group.cc', 'stateful_image.cc', 'text.cc', 'types.cc', |