Fixes the following bug: if the zoom level is such that the jump does not cause a visible
change in display of the tracks, then the selection in the selection bar, and the play
region are not updated.
The fix simply moves the location of the call to TP_DisplaySelection(), so that it is called
irrespective of whether the tracks are redrawn.
... Start scrub by click or double click on the scrub head; release button or
not; then move.
If you release before moving, you get scrubbing as before, controlled by
motion. Click or drag to switch in and out of seeking. Stop with ESC,
spacebar, etc. No change of selection.
But now if you drag, then scrubbing contines until you release the mouse or
otherwise stop with a key.
If by release of the mouse, then the selection changes as if by a click at
the last play position. If you hold shift, then, as if by shift-click.
If drag begins with a double-click, then the play head remains centered and
the track moves.
... This fixes a display bug if you use a shortcut key for the Scrub command
while the mouse is left or right of the wave area. You should not get the
green line right at the pointer!
... if the event is not handled and skipped by sub-windows first, such as for
toolbar button clicks.
(But track panel clicks are skipped even after doing something, so they may
also cause seeking besides other responses. So click can seek AND set cursor.)
This is meant to make drag to seek and wheel for change of speed easier,
without needing to keep the mouse in the narrow time ruler.
Also lets you click in the ruler, then move in any direction, and not miss the
motion event that should start the scrub playback.
The event handling is a bit of a hack, using propagation. It does not use
capture.
... and works in any of the six tools.
Click and drag in select tool during scrub works just as when not scrubbing.
Seeks now only if you left-click or drag in the ruler, but this may change.
Mouse motion anywhere on the screen controls scrub as before.
No mouse clicks in TrackPanel are used by scrubbing.
The Ctrl-Click in TrackPanel is now unused. Should 2.1.0 behavior be restored?
That was click to quick play, redundant with click in the (lower part of) the
ruler.
