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add RAII DisplaySuspender

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This commit is contained in:
Robin Gareus 2014-06-28 23:22:15 +02:00 • committed by Paul Davis
parent 8db5d93a35
commit 67c1322f0d
4 changed files with 41 additions and 0 deletions
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21
gtk2_ardour/public_editor.h
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@ -86,6 +86,8 @@ class VerboseCursor;
class XMLNode;
struct SelectionRect;
class DisplaySuspender;
namespace ARDOUR_UI_UTILS {
bool relay_key_press (GdkEventKey* ev, Gtk::Window* win);
bool forward_key_press (GdkEventKey* ev);
@ -430,6 +432,25 @@ class PublicEditor : public Gtk::Window, public PBD::StatefulDestructible, publi
(and protected) method here does not have a default value.
*/
virtual void _ensure_time_axis_view_is_visible (TimeAxisView const & tav, bool at_top) = 0;
friend class DisplaySuspender;
virtual void suspend_route_redisplay () = 0;
virtual void resume_route_redisplay () = 0;
gint _suspend_route_redisplay_counter;
};
class DisplaySuspender {
public:
DisplaySuspender() {
if (g_atomic_int_add(&PublicEditor::instance()._suspend_route_redisplay_counter, 1) == 0) {
PublicEditor::instance().suspend_route_redisplay ();
}
}
~DisplaySuspender () {
if (g_atomic_int_dec_and_test (&PublicEditor::instance()._suspend_route_redisplay_counter)) {
PublicEditor::instance().resume_route_redisplay ();
}
}
};
#endif // __gtk_ardour_public_editor_h__