the endless quest to plug memory leaks -- episode 379

[ardour.git] / libs / pbd / controllable.cc

diff --git a/libs/pbd/controllable.cc b/libs/pbd/controllable.cc
index 2264a955ae1accfda27633482b812beea5f0de35..b730a42980ffa08b05b8ec3390c22690113088c5 100644 (file)
--- a/libs/pbd/controllable.cc
+++ b/libs/pbd/controllable.cc
@@ -1,40 +1,167 @@
-#include <pbd/controllable.h>
-#include <pbd/xml++.h>
-#include <pbd/error.h>
+/*
+    Copyright (C) 2000-2007 Paul Davis
 
-#include "i18n.h"
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "pbd/controllable.h"
+#include "pbd/enumwriter.h"
+#include "pbd/xml++.h"
+#include "pbd/error.h"
+#include "pbd/locale_guard.h"
+
+#include "pbd/i18n.h"
 
 using namespace PBD;
+using namespace std;
+
+PBD::Signal1<void,Controllable*> Controllable::Destroyed;
+PBD::Signal1<bool,Controllable*> Controllable::StartLearning;
+PBD::Signal1<void,Controllable*> Controllable::StopLearning;
+PBD::Signal3<void,Controllable*,int,int> Controllable::CreateBinding;
+PBD::Signal1<void,Controllable*> Controllable::DeleteBinding;
 
-sigc::signal<void,Controllable*> Controllable::Destroyed;
-sigc::signal<bool,Controllable*> Controllable::StartLearning;
-sigc::signal<void,Controllable*> Controllable::StopLearning;
+Glib::Threads::RWLock Controllable::registry_lock;
+Controllable::Controllables Controllable::registry;
+PBD::ScopedConnectionList* registry_connections = 0;
+const std::string Controllable::xml_node_name = X_("Controllable");
 
-Controllable::Controllable (std::string name)
+Controllable::Controllable (const string& name, Flag f)
        : _name (name)
+       , _flags (f)
+       , _touching (false)
 {
+       add (*this);
+}
+
+void
+Controllable::add (Controllable& ctl)
+{
+       using namespace boost;
+
+       Glib::Threads::RWLock::WriterLock lm (registry_lock);
+       registry.insert (&ctl);
+
+       if (!registry_connections) {
+               registry_connections = new ScopedConnectionList;
+       }
+
+       /* Controllable::remove() is static - no need to manage this connection */
+
+       ctl.DropReferences.connect_same_thread (*registry_connections, boost::bind (&Controllable::remove, &ctl));
+}
+
+void
+Controllable::remove (Controllable* ctl)
+{
+       Glib::Threads::RWLock::WriterLock lm (registry_lock);
+
+       for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
+               if ((*i) == ctl) {
+                       registry.erase (i);
+                       break;
+               }
+       }
+}
+
+Controllable*
+Controllable::by_id (const ID& id)
+{
+       Glib::Threads::RWLock::ReaderLock lm (registry_lock);
+
+       for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
+               if ((*i)->id() == id) {
+                       return (*i);
+               }
+       }
+       return 0;
+}
+
+Controllable*
+Controllable::by_name (const string& str)
+{
+       Glib::Threads::RWLock::ReaderLock lm (registry_lock);
+
+       for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
+               if ((*i)->_name == str) {
+                       return (*i);
+               }
+       }
+       return 0;
 }
 
 XMLNode&
 Controllable::get_state ()
 {
-       XMLNode* node = new XMLNode (_name);
+       XMLNode* node = new XMLNode (xml_node_name);
+       LocaleGuard lg;
        char buf[64];
-       _id.print (buf, sizeof (buf));
+
+       /* Waves' "Pressure3" has a parameter called "µ-iness"
+        * which causes a  parser error : Input is not proper UTF-8, indicate encoding !
+        *  Bytes: 0xB5 0x2D 0x69 0x6E
+        *          <Controllable name="�-iness" id="2391" flags="" value="0.000000000000" p
+        */
+
+       // this is not reloaded from XML, but it must be present because it is
+       // used to find and identify XML nodes by various Controllable-derived objects
+
+       node->add_property (X_("name"), _name);
+
+       id().print (buf, sizeof (buf));
        node->add_property (X_("id"), buf);
+       node->add_property (X_("flags"), enum_2_string (_flags));
+       snprintf (buf, sizeof (buf), "%2.12f", get_value());
+        node->add_property (X_("value"), buf);
+
+       if (_extra_xml) {
+               node->add_child_copy (*_extra_xml);
+       }
+
        return *node;
 }
 
+
 int
-Controllable::set_state (const XMLNode& node)
+Controllable::set_state (const XMLNode& node, int /*version*/)
 {
-       const XMLProperty* prop = node.property (X_("id"));
+       LocaleGuard lg;
+       const XMLProperty* prop;
 
-       if (prop) {
-               _id = prop->value();
-               return 0;
-       } else {
-               error << _("Controllable state node has no ID property") << endmsg;
-               return -1;
+       Stateful::save_extra_xml (node);
+
+       set_id (node);
+
+       if ((prop = node.property (X_("flags"))) != 0) {
+               _flags = (Flag) string_2_enum (prop->value(), _flags);
        }
+
+       if ((prop = node.property (X_("value"))) != 0) {
+               float val;
+
+               if (sscanf (prop->value().c_str(), "%f", &val) == 1) {
+                       set_value (val, NoGroup);
+               }
+        }
+
+        return 0;
+}
+
+void
+Controllable::set_flags (Flag f)
+{
+       _flags = f;
 }