fix track height resizing on OSX.

If the transport is running, g_idle with G_PRIORITY_DEFAULT_IDLE is
never called.

TODO: check other g_idle functions in libs/gtkmm2ext

diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index e7eb4f04fa49b5590006d805163c49834dab21dc..eeb09c5aa845ef600b8684458eb9f4061e7bbad9 100644 (file)
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -4384,7 +4384,8 @@ void
 Editor::ensure_visual_change_idle_handler ()
 {
        if (pending_visual_change.idle_handler_id < 0) {
-               pending_visual_change.idle_handler_id = g_idle_add (_idle_visual_changer, this);
+               // see comment in add_to_idle_resize above.
+               pending_visual_change.idle_handler_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE + 20, _idle_visual_changer, this, NULL);
                pending_visual_change.being_handled = false;
        }
 }
@@ -4844,7 +4845,11 @@ void
 Editor::add_to_idle_resize (TimeAxisView* view, int32_t h)
 {
        if (resize_idle_id < 0) {
-               resize_idle_id = g_idle_add (_idle_resize, this);
+               /* https://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html#G-PRIORITY-HIGH-IDLE:CAPS
+                * GTK+ uses G_PRIORITY_HIGH_IDLE + 10 for resizing operations, and G_PRIORITY_HIGH_IDLE + 20 for redrawing operations.
+                * (This is done to ensure that any pending resizes are processed before any pending redraws, so that widgets are not redrawn twice unnecessarily.)
+                */
+               resize_idle_id = g_idle_add_full (G_PRIORITY_HIGH_IDLE + 10, _idle_resize, this, NULL);
                _pending_resize_amount = 0;
        }