--- /dev/null
+/* === 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), link_scalar(0.0)
+{
+}
+
+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;
+
+ Real current_scalar(1.0);
+ bool found_inverse(false);
+
+ ParamList::const_iterator iter;
+ //Search thru all the Param and pick up the value descriptions
+ for(iter=x.begin(); iter!=x.end(); iter++)
+ {
+ if(iter->first == "value_desc")
+ {
+ ValueDesc v_desc(iter->second.get_value_desc());
+ // if the value description parent is linkable value node, continue
+ if(!v_desc.parent_is_linkable_value_node())
+ return false;
+ // if the link describe to any tangent (index 4 or 5), continue
+ if(v_desc.get_index() != 4 && v_desc.get_index() != 5)
+ return false;
+ synfig::Real iter_scalar=v_desc.get_scalar();
+ // Let's compare the sign of scalar of the value node witht the current one
+ // and remember if a change of sign is seen.
+ if(iter_scalar*current_scalar < 0) // if they have different signs
+ {
+ found_inverse=true;
+ current_scalar=iter_scalar;
+ }
+ }
+ }
+ // If we found two inverse tangents then continue
+ if(!found_inverse)
+ return false;
+ // We have reached two or more 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();
+ link_scalar=value_desc.get_scalar();
+ 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();
+ link_scalar=value_desc.get_scalar();
+ }
+ 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();
+ link_scalar=value_desc.get_scalar();
+ }
+ 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();
+ link_scalar=value_desc.get_scalar();
+ }
+ 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();
+ link_scalar=value_desc.get_scalar();
+ }
+ 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.");
+ }
+ }
+ // If both are Linkable Value Nodes and has waypoint in its children, use the one with more waypoints
+ else if(LinkableValueNode::Handle::cast_dynamic(link_value_node) &&
+ LinkableValueNode::Handle::cast_dynamic(value_desc.get_value_node()) &&
+ LinkableValueNode::Handle::cast_dynamic(link_value_node)->get_times().size() !=
+ LinkableValueNode::Handle::cast_dynamic(value_desc.get_value_node())->get_times().size())
+ {
+ if(LinkableValueNode::Handle::cast_dynamic(link_value_node)->get_times().size() <
+ LinkableValueNode::Handle::cast_dynamic(value_desc.get_value_node())->get_times().size())
+ {
+ status_level = 4;
+ status_message = _("There's a tie for most referenced, and both are linkable value node animated; using the one with the most waypoints.");
+ link_value_node=value_desc.get_value_node();
+ link_scalar=value_desc.get_scalar();
+ }
+ else if (status_level <= 4)
+ {
+ status_level = 4;
+ status_message = _("There's a tie for most referenced, and both are linkable value node 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();
+ link_scalar=value_desc.get_scalar();
+ }
+ 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()<=1)
+ 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(!link_value_node)
+ {
+ // we should have a value node selected because is_candidate()
+ // should have checked it before
+ throw Error(Error::TYPE_BUG);
+ }
+
+ // Check if the selected link value node is already a scale -1.0 Linkable Value Node
+ bool link_is_scaled(false);
+ if(synfig::ValueNode_Scale::Handle::cast_dynamic(link_value_node))
+ {
+ synfig::ValueNode_Const::Handle scale_vn(
+ synfig::ValueNode_Const::Handle::cast_dynamic(
+ synfig::ValueNode_Scale::Handle::cast_dynamic(link_value_node)->get_link(1)
+ )
+ );
+ if(scale_vn)
+ if((*scale_vn)(synfig::Time(0))==synfig::ValueBase(Real(-1.0)))
+ link_is_scaled=true;
+ }
+
+ //See what is the tangent selected to convert.
+ std::list<ValueDesc>::const_iterator vd_iter;
+ for(vd_iter=value_desc_list.begin(); vd_iter!=value_desc_list.end(); vd_iter++)
+ {
+ // Don't link the selected to itself
+ if(vd_iter->get_value_node() == link_value_node)
+ continue;
+ //Check if the current value node has opposite scalar than the link
+ // value node to convert to scale -1.0 before connect.
+ // Check also if the link value node is NOT also a scale -1
+ if( (vd_iter->get_scalar()*link_scalar<0) && (link_is_scaled==false) )
+ {
+ //Let's create a Scale Value Node
+ synfig::ValueNode::Handle scale_value_node=synfig::LinkableValueNode::create("scale",vd_iter->get_value(time));
+ if(!scale_value_node)
+ throw Error(Error::TYPE_BUG);
+ scale_value_node->set_parent_canvas(get_canvas());
+ //Let's connect the new Scale Value Node to the value node
+ Action::Handle action1(Action::create("ValueDescConnect"));
+ if(!action1)
+ throw Error(Error::TYPE_CRITICAL);
+ action1->set_param("canvas",get_canvas());
+ action1->set_param("canvas_interface",get_canvas_interface());
+ action1->set_param("dest",*vd_iter);
+ action1->set_param("src",scale_value_node);
+ assert(action1->is_ready());
+ if(!action1->is_ready())
+ throw Error(Error::TYPE_NOTREADY);
+ add_action_front(action1);
+
+ //Let's Connect the link value node to the scale value node link subparam
+ Action::Handle action2(Action::create("ValueNodeLinkConnect"));
+ if(!action2)
+ throw Error(Error::TYPE_CRITICAL);
+
+ action2->set_param("canvas",get_canvas());
+ action2->set_param("canvas_interface",get_canvas_interface());
+ action2->set_param("parent_value_node",scale_value_node);
+ action2->set_param("index",0);
+ action2->set_param("value_node",link_value_node);
+ assert(action2->is_ready());
+ if(!action2->is_ready())
+ throw Error(Error::TYPE_NOTREADY);
+ add_action_front(action2);
+
+ //Let's Set the scale to -1
+ Action::Handle action3(Action::create("ValueNodeConstSet"));
+ if(!action3)
+ throw Error(Error::TYPE_CRITICAL);
+
+ action3->set_param("canvas",get_canvas());
+ action3->set_param("canvas_interface",get_canvas_interface());
+ action3->set_param("value_node",synfig::LinkableValueNode::Handle::cast_dynamic(scale_value_node)->get_link(1));
+ action3->set_param("new_value",synfig::ValueBase(Real(-1.0)));
+ assert(action3->is_ready());
+ if(!action3->is_ready())
+ throw Error(Error::TYPE_NOTREADY);
+ add_action_front(action3);
+ }
+ else if((vd_iter->get_scalar()*link_scalar<0) && (link_is_scaled==true) )
+ {
+ synfig::info("adding action4");
+ //Let's connect the link value node -> link to the value node
+ // There is not needed conversion to scale of the value node
+ // because the link value node is already a scale -1
+ Action::Handle action4(Action::create("ValueDescConnect"));
+ if(!action4)
+ throw Error(Error::TYPE_CRITICAL);
+ action4->set_param("canvas",get_canvas());
+ action4->set_param("canvas_interface",get_canvas_interface());
+ action4->set_param("dest",*vd_iter);
+ action4->set_param("src",synfig::ValueNode_Scale::Handle::cast_dynamic(link_value_node)->get_link(0));
+ assert(action4->is_ready());
+ if(!action4->is_ready())
+ throw Error(Error::TYPE_NOTREADY);
+ add_action_front(action4);
+ }
+ else
+ {
+ //Let's connect the link value node to the value node
+ Action::Handle action(Action::create("ValueDescConnect"));
+ if(!action)
+ throw Error(Error::TYPE_CRITICAL);
+ action->set_param("canvas",get_canvas());
+ action->set_param("canvas_interface",get_canvas_interface());
+ action->set_param("dest",*vd_iter);
+ action->set_param("src",link_value_node);
+ 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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