patch from colinf that adds an 'empty' preset to the preset drop-down list, so that plugins can be set back to the 'no preset' state rather than being stuck in the state of 'preset loaded and modified'. This should apply to all plugin types, though I've only tried it on LV2 and LADSPA.

git-svn-id: svn://localhost/ardour2/branches/3.0@12787 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 6 insertions, 0 deletions

diff --git a/gtk2_ardour/plugin_ui.cc b/gtk2_ardour/plugin_ui.cc
index 455cea1364..169928843a 100644
--- a/gtk2_ardour/plugin_ui.cc
+++ b/gtk2_ardour/plugin_ui.cc
@@ -593,6 +593,9 @@ PlugUIBase::preset_selected ()
 			warning << string_compose(_("Plugin preset %1 not found"),
 						  _preset_combo.get_active_text()) << endmsg;
 		}
+	} else {
+		// blank selected = no preset
+		plugin->clear_preset();
 	}
 }
 
@@ -745,6 +748,8 @@ PlugUIBase::update_preset_list ()
 		preset_labels.push_back (i->label);
 	}
 
+	preset_labels.push_back("");
+
 	set_popdown_strings (_preset_combo, preset_labels);
 
 	--_no_load_preset;
@@ -768,6 +773,7 @@ PlugUIBase::update_preset ()
 void
 PlugUIBase::update_preset_modified ()
 {
+
 	if (plugin->last_preset().uri.empty()) {
 		_preset_modified.set_text ("");
 		return;