After instantiation of InstrumentTrack save its settings so we can
restore it each time before previewing resources. Otherwise preview
of incomplete presets or just samples could be distorted by settings
of previosly loaded preset.
Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
Added a PianoView widget to ResourceBrowser so one can easily preview selected
preset, sample etc.
Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
Make the internal InstrumentTrack play the default key in preview()
and stop playback in new method stopPreview().
Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
Added initial version of ResourcePreviewer, a replacement for the old
PresetPreviewPlayHandle technology. It can take any ResourceItem and
preview it depending on its type.
Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
