Scrubbing and Seeking

Peter 01May15: Very rough draft notes copied from Notes for Testers in the Wiki.

NEW FEATURE: Scrubbing

Scrubbing works only in Select and Multi tools.

• Middle-click-drag to scrub, or to seek when shift is down.
  • Control wheel to vary the speed limit, while scrubbing (not seeking).
• Middle-double-click-drag to scrub or (with SHIFT down) to seek while keeping the playhead at the midline of the track display.
  • Speed of play and direction of play is controlled by dragging left/right from the center of waveform display
• The transcription toolbar setting determines the initial scrubbing speed limit each time you start scrubbing
• The scrubbing position on completion can be marked with a left-click mouse gesture (moves the cursor to that position)

Also notice changes to status bar messages and the Mouse Preferences dialog.

• There is an intention to change middle-drag to ctrl-(double-)click. Using the middle (wheel) button for it works well for some mice and hands, but enough people had problems with it that the changed binding is thought to be better.

Scrubbing only works in selection tool now, no longer in Multi-tool in which ctrl-click already had another meaning (time shift).

Paul L wrote re the new UI

Finally the promised changes to scrubbing user interface:

• ctrl-click then drag to scrub, or to seek when shift is down.
  • Control wheel to vary the speed limit, while scrubbing (not seeking).
• ctrl-double-click then drag to scrub or (with SHIFT down to seek) while keeping the playhead at the midline of the track display.
  • Speed of play and direction of play is controlled by dragging left/right from the center of waveform display
• ctrl-click again to stop, or use space bar or > stop button, etc.

Between clicks, the scrub is governed by mouse movement, the shift key, and the (undepressed) mouse wheel.

I see James has changed the colors used for the speed numbers.

Are there any other strong opinions about other details?

1) Keep the transcription toolbar interaction or not 2) Appearance of the speed numbers (font, size, ...) 3) Range of speed limits (it goes to 32x now, maybe that is excessive) 4) Scrubbing backwards (Peter likes it, Gale does not) 5) Others?