--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file value_desc.h
+** \brief Template Header
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 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
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_APP_VALUE_DESC_H
+#define __SYNFIG_APP_VALUE_DESC_H
+
+/* === H E A D E R S ======================================================= */
+
+#include <synfig/valuenode.h>
+#include <synfig/string.h>
+#include <synfig/layer.h>
+#include <synfig/value.h>
+#include <synfig/valuenode_animated.h>
+#include <synfig/valuenode_const.h>
+#include <synfig/canvas.h>
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfigapp {
+
+class ValueDesc
+{
+ // Info for Layer parent
+ synfig::Layer::Handle layer;
+ synfig::String name;
+
+ // Info for ValueNode parent
+ synfig::ValueNode::Handle parent_value_node;
+ int index; // -2 if it's a waypoint, -1 if it's const, >=0 if it's LinkableValueNode
+ synfig::Time waypoint_time;
+
+ // Info for exported ValueNode
+ synfig::Canvas::Handle canvas;
+
+public:
+ bool operator==(const ValueDesc &rhs)const
+ {
+ if((layer||rhs.layer) && layer!=rhs.layer)
+ return false;
+ if((!name.empty()||!rhs.name.empty()) && name!=rhs.name)
+ return false;
+ if(layer)
+ return true;
+ if((canvas||rhs.canvas) && canvas!=rhs.canvas)
+ return false;
+ if((parent_value_node||rhs.parent_value_node) && parent_value_node!=rhs.parent_value_node)
+ return false;
+ if(index!=rhs.index)
+ return false;
+ return true;
+ }
+ bool operator!=(const ValueDesc &rhs)const
+ {
+ return !operator==(rhs);
+ }
+
+
+ ValueDesc(synfig::Layer::Handle layer,const synfig::String& param_name):
+ layer(layer),
+ name(param_name) { }
+
+ ValueDesc(synfig::Layer::LooseHandle layer,const synfig::String& param_name):
+ layer(layer),
+ name(param_name) { }
+
+ ValueDesc(synfig::LinkableValueNode::Handle parent_value_node,int index):
+ parent_value_node(parent_value_node),
+ index(index) { }
+
+// ValueDesc(synfig::LinkableValueNode::Handle parent_value_node,const synfig::String& param_name):
+// parent_value_node(parent_value_node),
+// index(parent_value_node->get_link_index_from_name(param_name)) { }
+
+ ValueDesc(synfig::ValueNode_Animated::Handle parent_value_node,synfig::Time waypoint_time):
+ parent_value_node(parent_value_node),
+ index(-2),
+ waypoint_time(waypoint_time) { }
+
+ ValueDesc(synfig::Canvas::Handle canvas,const synfig::String& name):
+ name(name),
+ canvas(canvas) { }
+
+ ValueDesc(synfig::ValueNode_Const::Handle parent_value_node):
+ parent_value_node(parent_value_node),
+ index(-1) { }
+
+ ValueDesc() { }
+
+ bool is_valid()const { return layer || parent_value_node || canvas; }
+ operator bool()const { return is_valid(); }
+
+ bool parent_is_layer_param()const { return (bool)layer; }
+ bool parent_is_value_node()const { return (bool)parent_value_node; }
+ bool parent_is_linkable_value_node()const { return parent_is_value_node() && index>=0; }
+ bool parent_is_value_node_const()const { return parent_is_value_node() && index==-1; }
+ bool parent_is_waypoint()const { return parent_is_value_node() && index==-2; }
+ bool parent_is_canvas()const { return (bool)canvas; }
+
+ bool is_value_node()const { return parent_is_value_node() || parent_is_canvas() || (parent_is_layer_param() && (bool)layer->dynamic_param_list().count(name)); }
+ bool is_const()const { return (parent_is_layer_param() && !layer->dynamic_param_list().count(name)) || parent_is_value_node_const(); }
+
+ synfig::Layer::Handle get_layer()const { assert(parent_is_layer_param()); return layer; }
+ const synfig::String& get_param_name()const { assert(parent_is_layer_param()); return name; }
+
+ synfig::ValueNode::Handle get_parent_value_node()const { assert(parent_is_value_node()); return parent_value_node; }
+ int get_index()const { assert(parent_is_linkable_value_node()); return index; }
+ synfig::Time get_waypoint_time()const { assert(parent_is_waypoint()); return waypoint_time; }
+
+ const synfig::String& get_value_node_id()const { assert(parent_is_canvas()); return name; }
+
+ synfig::Canvas::Handle get_canvas()const
+ {
+ if(canvas)
+ return canvas;
+ if(layer)
+ return layer->get_canvas();
+ if(parent_value_node)
+ return parent_value_node->get_root_canvas();
+ return 0;
+ }
+
+ synfig::ValueNode::Handle
+ get_value_node()const
+ {
+ if(parent_is_canvas())
+ return canvas->find_value_node(name);
+ if(parent_is_layer_param() && layer->dynamic_param_list().count(name))
+ return layer->dynamic_param_list().find(name)->second;
+ if(parent_is_linkable_value_node())
+ return (synfig::LinkableValueNode::Handle::cast_reinterpret(parent_value_node))->get_link(index);
+// return reinterpret_cast<synfig::LinkableValueNode*>(parent_value_node.get())->get_link(index);
+ if(parent_is_value_node_const())
+ return parent_value_node;
+ if(parent_is_waypoint())
+ return (synfig::ValueNode_Animated::Handle::cast_reinterpret(parent_value_node))->find(waypoint_time)->get_value_node();
+ return 0;
+ }
+
+ synfig::ValueBase
+ get_value(synfig::Time time=0)const
+ {
+ // if the value is constant, return that constant value (at *any* time, it doesn't matter which)
+ if(parent_is_value_node_const())
+ return (*parent_value_node)(0);
+ if(is_value_node() && get_value_node())
+ return (*get_value_node())(time);
+ if(parent_is_layer_param() && layer)
+ return layer->get_param(name);
+ return synfig::ValueBase();
+ }
+
+ synfig::ValueBase::Type
+ get_value_type()const
+ {
+ synfig::ValueNode::Handle value_node=get_value_node();
+ if(value_node)
+ return value_node->get_type();
+ return get_value().get_type();
+ }
+
+ bool
+ is_exported()const
+ {
+ return is_value_node() && get_value_node()->is_exported();
+ }
+
+ synfig::String
+ get_description(bool show_exported_name = true)const;
+}; // END of class ValueDesc
+
+}; // END of namespace synfigapp_instance
+
+/* === E N D =============================================================== */
+
+#endif
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