Designed to allow derived classes to *save* a different value than would be reported by ::get_value(). Specifically there so that slaved controls can save/restore their *own* state, not the value that ::get_value() would return.
167 lines
4.1 KiB
C++
167 lines
4.1 KiB
C++
/*
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Copyright (C) 2000-2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "pbd/controllable.h"
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#include "pbd/enumwriter.h"
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#include "pbd/xml++.h"
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#include "pbd/error.h"
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#include "pbd/locale_guard.h"
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#include "pbd/i18n.h"
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using namespace PBD;
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using namespace std;
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PBD::Signal1<void,Controllable*> Controllable::Destroyed;
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PBD::Signal1<bool,Controllable*> Controllable::StartLearning;
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PBD::Signal1<void,Controllable*> Controllable::StopLearning;
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PBD::Signal3<void,Controllable*,int,int> Controllable::CreateBinding;
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PBD::Signal1<void,Controllable*> Controllable::DeleteBinding;
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Glib::Threads::RWLock Controllable::registry_lock;
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Controllable::Controllables Controllable::registry;
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PBD::ScopedConnectionList* registry_connections = 0;
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const std::string Controllable::xml_node_name = X_("Controllable");
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Controllable::Controllable (const string& name, Flag f)
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: _name (name)
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, _flags (f)
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, _touching (false)
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{
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add (*this);
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}
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void
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Controllable::add (Controllable& ctl)
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{
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using namespace boost;
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Glib::Threads::RWLock::WriterLock lm (registry_lock);
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registry.insert (&ctl);
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if (!registry_connections) {
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registry_connections = new ScopedConnectionList;
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}
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/* Controllable::remove() is static - no need to manage this connection */
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ctl.DropReferences.connect_same_thread (*registry_connections, boost::bind (&Controllable::remove, &ctl));
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}
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void
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Controllable::remove (Controllable* ctl)
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{
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Glib::Threads::RWLock::WriterLock lm (registry_lock);
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for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
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if ((*i) == ctl) {
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registry.erase (i);
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break;
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}
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}
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}
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Controllable*
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Controllable::by_id (const ID& id)
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{
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Glib::Threads::RWLock::ReaderLock lm (registry_lock);
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for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
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if ((*i)->id() == id) {
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return (*i);
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}
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}
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return 0;
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}
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Controllable*
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Controllable::by_name (const string& str)
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{
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Glib::Threads::RWLock::ReaderLock lm (registry_lock);
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for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
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if ((*i)->_name == str) {
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return (*i);
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}
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}
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return 0;
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}
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XMLNode&
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Controllable::get_state ()
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{
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XMLNode* node = new XMLNode (xml_node_name);
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LocaleGuard lg;
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char buf[64];
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/* Waves' "Pressure3" has a parameter called "µ-iness"
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* which causes a parser error : Input is not proper UTF-8, indicate encoding !
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* Bytes: 0xB5 0x2D 0x69 0x6E
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* <Controllable name="<22>-iness" id="2391" flags="" value="0.000000000000" p
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*/
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// this is not reloaded from XML, but it must be present because it is
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// used to find and identify XML nodes by various Controllable-derived objects
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node->add_property (X_("name"), _name);
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id().print (buf, sizeof (buf));
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node->add_property (X_("id"), buf);
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node->add_property (X_("flags"), enum_2_string (_flags));
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snprintf (buf, sizeof (buf), "%2.12f", get_save_value());
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node->add_property (X_("value"), buf);
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if (_extra_xml) {
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node->add_child_copy (*_extra_xml);
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}
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return *node;
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}
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int
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Controllable::set_state (const XMLNode& node, int /*version*/)
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{
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LocaleGuard lg;
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const XMLProperty* prop;
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Stateful::save_extra_xml (node);
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set_id (node);
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if ((prop = node.property (X_("flags"))) != 0) {
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_flags = (Flag) string_2_enum (prop->value(), _flags);
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}
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if ((prop = node.property (X_("value"))) != 0) {
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float val;
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if (sscanf (prop->value().c_str(), "%f", &val) == 1) {
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set_value (val, NoGroup);
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}
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}
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return 0;
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}
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void
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Controllable::set_flags (Flag f)
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{
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_flags = f;
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}
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