+/* === S Y N F I G ========================================================= */
+/*! \file valuedescsmartlink.cpp
+** \brief Template File
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 Chris Moore
+**
+** This package 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 package 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.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "valuedescsmartlink.h"
+
+#include <synfigapp/canvasinterface.h>
+#include <synfig/valuenode_const.h>
+#include <synfig/valuenode_scale.h>
+
+#include <synfigapp/general.h>
+
+#endif
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+using namespace synfigapp;
+using namespace Action;
+
+/* === M A C R O S ========================================================= */
+
+ACTION_INIT(Action::ValueDescSmartLink);
+ACTION_SET_NAME(Action::ValueDescSmartLink,"ValueDescSmartLink");
+ACTION_SET_LOCAL_NAME(Action::ValueDescSmartLink,N_("Smart Link"));
+ACTION_SET_TASK(Action::ValueDescSmartLink,"connect");
+ACTION_SET_CATEGORY(Action::ValueDescSmartLink,Action::CATEGORY_VALUEDESC);
+ACTION_SET_PRIORITY(Action::ValueDescSmartLink,0);
+ACTION_SET_VERSION(Action::ValueDescSmartLink,"0.0");
+ACTION_SET_CVS_ID(Action::ValueDescSmartLink,"$Id$");
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+Action::ValueDescSmartLink::ValueDescSmartLink(): poison(false), status_level(0)
+{
+}
+
+Action::ParamVocab
+Action::ValueDescSmartLink::get_param_vocab()
+{
+ ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
+
+ ret.push_back(ParamDesc("value_desc",Param::TYPE_VALUEDESC)
+ .set_local_name(_("ValueDesc to smart link"))
+ .set_requires_multiple()
+ );
+
+ return ret;
+}
+
+bool
+Action::ValueDescSmartLink::is_candidate(const ParamList &x)
+{
+ // If action parameters are not Value Desc
+ if(!candidate_check(get_param_vocab(),x))
+ return false;
+ // If the size of the List of Param is not two
+
+ // If both value desc aren't Linkable Value Nodes children
+ ParamList::const_iterator iter;
+ int counter=0;
+ Param params[2];
+ for(iter=x.begin(); iter!=x.end(); iter++)
+ {
+ if(iter->first == "value_desc")
+ {
+ params[counter]=iter->second;
+ counter++;
+ }
+ if (counter>2)
+ return false;
+ }
+ Param pfront(params[0]);
+ Param pback(params[1]);
+ if(!pfront.get_value_desc().parent_is_linkable_value_node() ||
+ !pback.get_value_desc().parent_is_linkable_value_node())
+ return false;
+ // If both don't have opposite scalars.
+ if(!((pback.get_value_desc().get_scalar()< 0 && pfront.get_value_desc().get_scalar()> 0)
+ ||
+ (pback.get_value_desc().get_scalar()> 0 && pfront.get_value_desc().get_scalar()< 0))
+ )
+ return false;
+
+ //We have reached two opposite tangents
+ return true;
+}
+
+bool
+Action::ValueDescSmartLink::set_param(const synfig::String& name, const Action::Param ¶m)
+{
+ if(name=="time" && param.get_type()==Param::TYPE_TIME)
+ {
+ time=param.get_time();
+ return true;
+ }
+
+ // don't bother looking for the best value to use if there's already been an error
+ if (poison==true) return false;
+
+ if(name=="value_desc" && param.get_type()==Param::TYPE_VALUEDESC)
+ {
+ ValueDesc value_desc(param.get_value_desc());
+
+ if(value_desc.is_value_node() && value_desc.get_value_node()->is_exported())
+ {
+ if(link_value_node==value_desc.get_value_node())
+ return true;
+
+ if(link_value_node && link_value_node->is_exported())
+ {
+ poison=true;
+ status_message = (_("Cannot link two different exported values ('") +
+ value_desc.get_value_node()->get_id() + _("' and '") +
+ link_value_node->get_id()) + _("')");
+ return false;
+ }
+
+ link_value_node=value_desc.get_value_node();
+ status_message = _("Used exported ValueNode ('") + link_value_node->get_id() + _("').");
+ }
+ else if(value_desc.is_value_node())
+ {
+ if(!link_value_node)
+ {
+ status_level = 1;
+ status_message = _("Using the only available ValueNode.");
+ link_value_node=value_desc.get_value_node();
+ }
+ else if(link_value_node->is_exported())
+ {
+ // we've already seen an exported value, so use that rather than the current value
+ }
+ // Use the one that is referenced more
+ else if(link_value_node->rcount()!=value_desc.get_value_node()->rcount())
+ {
+ if(link_value_node->rcount()<value_desc.get_value_node()->rcount())
+ {
+ status_level = 2;
+ status_message = _("Using the most referenced ValueNode.");
+ link_value_node=value_desc.get_value_node();
+ }
+ else if (status_level <= 2)
+ {
+ status_level = 2;
+ status_message = _("Using the most referenced ValueNode.");
+ }
+ }
+ // If the current link value node is a constant and
+ // this one isn't, then give preference to the exotic
+ else if(ValueNode_Const::Handle::cast_dynamic(link_value_node) && !ValueNode_Const::Handle::cast_dynamic(value_desc.get_value_node()))
+ {
+ status_level = 3;
+ status_message = _("There's a tie for most referenced; using the animated ValueNode.");
+ link_value_node=value_desc.get_value_node();
+ }
+ else if(ValueNode_Const::Handle::cast_dynamic(value_desc.get_value_node()) && !ValueNode_Const::Handle::cast_dynamic(link_value_node))
+ {
+ if (status_level <= 3)
+ {
+ status_level = 3;
+ status_message = _("There's a tie for most referenced; using the animated ValueNode.");
+ }
+ }
+ // If both are animated, and this one has more waypoints, then use the one with more waypoints
+ else if(ValueNode_Animated::Handle::cast_dynamic(link_value_node) &&
+ ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node()) &&
+ ValueNode_Animated::Handle::cast_dynamic(link_value_node)->waypoint_list().size() !=
+ ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node())->waypoint_list().size())
+ {
+ if (ValueNode_Animated::Handle::cast_dynamic(link_value_node)->waypoint_list().size() <
+ ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node())->waypoint_list().size())
+ {
+ status_level = 4;
+ status_message = _("There's a tie for most referenced, and both are animated; using the one with the most waypoints.");
+ link_value_node=value_desc.get_value_node();
+ }
+ else if (status_level <= 4)
+ {
+ status_level = 4;
+ status_message = _("There's a tie for most referenced, and both are animated; using the one with the most waypoints.");
+ }
+ }
+ // Use the one that was least recently changed
+ else if(link_value_node->get_time_last_changed()!=value_desc.get_value_node()->get_time_last_changed())
+ {
+ if(link_value_node->get_time_last_changed()>value_desc.get_value_node()->get_time_last_changed())
+ {
+ status_level = 5;
+ status_message = _("Everything is tied; using the least recently modified value.");
+ link_value_node=value_desc.get_value_node();
+ }
+ else if (status_level <= 5)
+ {
+ status_level = 5;
+ status_message = _("Everything is tied; using the least recently modified value.");
+ }
+ }
+ else
+ {
+ status_level = 6;
+ status_message = _("Absolutely everything is tied.");
+ }
+ }
+
+ if(value_desc_list.size() && value_desc.get_value_type()!=value_desc_list.front().get_value_type())
+ {
+ // Everything must be of the same type
+ poison=true;
+ status_message = (strprintf(_("Cannot link two values of different types ('%s' and '%s')"),
+ ValueBase::type_local_name(value_desc.get_value_type()).c_str(),
+ ValueBase::type_local_name(value_desc_list.front().get_value_type()).c_str()));
+ return false;
+ }
+
+ value_desc_list.push_back(value_desc);
+
+ return true;
+ }
+
+ return Action::CanvasSpecific::set_param(name,param);
+}
+
+bool
+Action::ValueDescSmartLink::is_ready()const
+{
+ if(poison)
+ return true;
+ if(value_desc_list.size()!=2)
+ return false;
+ return Action::CanvasSpecific::is_ready();
+}
+
+void
+Action::ValueDescSmartLink::prepare()
+{
+ if(poison)
+ throw Error(status_message.c_str());
+
+ if(value_desc_list.empty())
+ throw Error(Error::TYPE_NOTREADY);
+
+ clear();
+/*
+ if(value_desc_list.size()!=2)
+ throw Error(Error::TYPE_BUG);
+
+ ValueDesc& value_desc_t1(value_desc_list.front());
+ ValueDesc& value_desc_t2(value_desc_list.back());
+ t1 = value_desc_t1.get_value_node();
+ t2 = value_desc_t2.get_value_node();
+
+ if(!link_value_node)
+ {
+ throw Error(Error::TYPE_BUG);
+ }
+
+ //Study the particular case of two tangents of a bline being linked.
+ ValueDesc& toconvert;
+ if(t1==link_value_node)
+ {
+ // Convert t2
+ synfig::info("converting t2");
+ toconvert=value_desc_t2;
+ }
+ else if(t2==link_value_node)
+ {
+ //Convert t1
+ synfig::info("converting t1");
+ toconvert=value_desc_t1;
+ }
+ else { synfig::info("error"); }
+
+
+ Action::Handle action(Action::create("ValueDescConvert"));
+ action->set_param("canvas",get_canvas());
+ action->set_param("canvas_interface",get_canvas_interface());
+ action->set_param("time",time);
+ action->set_param("type","scalar");
+ action->set_param("value_desc",toconvert);
+ assert(action->is_ready());
+ if(!action->is_ready())
+ throw Error(Error::TYPE_NOTREADY);
+ add_action_front(action);
+*/
+ synfig::info("http://synfig.org/Linking#Tier_%d : %s", status_level, status_message.c_str());
+}
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