diff view/ViewManager.h @ 815:09026c875301

Create separate play scroll modes for (Tony-style, DAW-style) page mode and (SV-style) paging with playhead alignment to centre on drag

--- a/view/ViewManager.h	Wed Jul 02 08:42:45 2014 +0100
+++ b/view/ViewManager.h	Wed Jul 02 17:30:09 2014 +0100
@@ -31,8 +31,31 @@
 class Model;
 
 enum PlaybackFollowMode {
+
+    /**
+     * View scrolls continuously during playback, keeping the playback
+     * position at the centre.
+     */
     PlaybackScrollContinuous,
+
+    /**
+     * View follows playback page-by-page, but dragging the view
+     * relocates playback to the centre frame. This is the classic
+     * Sonic Visualiser behaviour.
+     */
+    PlaybackScrollPageWithCentre,
+
+    /**
+     * View follows playback page-by-page, and the play head is moved
+     * (by the user) separately from dragging the view. This is
+     * roughly the behaviour of a typical DAW or audio editor.
+     */
     PlaybackScrollPage,
+
+    /**
+     * View is detached from playback. It doesn't follow playback, and
+     * dragging the view does not affect the play head.
+     */
     PlaybackIgnore
 };