diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2014-05-20 23:08:15 -0400 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2014-06-03 16:10:27 -0400 |
commit | 6019f06bdf919e1d95dd0912116cdec0834af8db (patch) | |
tree | be8d2e41e692c2e8a572f531b546efde67b1503f /gtk2_ardour/editor.h | |
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 'gtk2_ardour/editor.h')
-rw-r--r-- | gtk2_ardour/editor.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gtk2_ardour/editor.h b/gtk2_ardour/editor.h index 4653ccc6b4..f6623a3a15 100644 --- a/gtk2_ardour/editor.h +++ b/gtk2_ardour/editor.h @@ -733,7 +733,20 @@ class Editor : public PublicEditor, public PBD::ScopedConnectionList, public ARD ArdourCanvas::Group* transport_marker_bar_group; ArdourCanvas::Group* cd_marker_bar_group; - /* The group containing all trackviews. Only scrolled vertically. */ + /* The group containing all other groups that are scrolled vertically + and horizontally. + */ + ArdourCanvas::Group* hv_scroll_group; + + /* The group containing all other groups that are scrolled vertically ONLY + */ + ArdourCanvas::Group* v_scroll_group; + + /* The group containing all other groups that are scrolled horizontally ONLY + */ + ArdourCanvas::Group* h_scroll_group; + + /* The group containing all trackviews. */ ArdourCanvas::Group* _trackview_group; /* The group used for region motion. Sits on top of _trackview_group */ |