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 /gtk2_ardour/editor_cursors.cc | |
| 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_cursors.cc')
| -rw-r--r-- | gtk2_ardour/editor_cursors.cc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gtk2_ardour/editor_cursors.cc b/gtk2_ardour/editor_cursors.cc index 1dd0d42a51..461fe4758e 100644 --- a/gtk2_ardour/editor_cursors.cc +++ b/gtk2_ardour/editor_cursors.cc @@ -33,8 +33,8 @@ using namespace Gtk; EditorCursor::EditorCursor (Editor& ed, bool (Editor::*callbck)(GdkEvent*,ArdourCanvas::Item*)) : _editor (ed) - , _time_bars_canvas_item (new ArdourCanvas::Arrow (_editor._time_bars_canvas->root ())) - , _track_canvas_item (new ArdourCanvas::Line (_editor._track_canvas->root ())) + , _time_bars_canvas_item (new ArdourCanvas::Arrow (_editor.get_time_bars_group())) + , _track_canvas_item (new ArdourCanvas::Line (_editor.get_track_canvas_group())) , _length (1.0) { CANVAS_DEBUG_NAME (_time_bars_canvas_item, "timebars editor cursor"); |