First visual change will be processed as normal and then blocked until the
canvas renders the change. If further visual changes need processing then
Editor::pre_render callback will schedule another expose/redraw/render.
This prevents an issue where idle_visual_changer is called many times in
response to events(keys/motion/etc) but the canvas does not get a chance to
render any but the last one which results in a big pause/jump.
This results in a more responsive canvas and in particular a smoother and more
predictable zooming experience.
This can be hard to reproduce and I have not been able to work out the steps to
reproduce reliably, but as it is still occuring work around the issue by just
checking the variable is valid before dereferencing it.
Resolves: #7304
- save mode separately for Editor-sidebar and Location Window
- cache mode (multiple calls to set_session())
- fix restore: after creating the editor, instant_save() is called,
potentially overwriting the previous value.
snap now fills in a struct (MusicFrame) which contins a snapped frame
along with a music divisor.
this gives useful information wrt magnetic snap which may or may not
have rounded to an exact musical position.
region position may now be set musically (using quarter notes for now).
this patch fixes several problems in the current code:
- dragging a list of music-locked regions now maintains correct
musical offsets within the list.
- splitting regions using magnetic snap works correctly (#7192)
- cut drag should now work correctly with magnetic snap.
- musical length of split midi regions is no longer frame based.
When deleting the last track before a VCA, on-delete the editor-mixer
switches to display the next TAV. If that turns out to be a VCATAV,
the editor-mixer will ignore it and keep displaying the deleted route,
holding a shared pointer reference (ports won't be dropped, etc etc).
* "Follow Edits" button had several behaviors that confused users.
* "Follow Range" only has 2 behaviors:
** Click anywhere in Range mode (or Smart mode) to locate the playhead.
** When you select a Range, "Play" will play the selected range.
