+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file valuenode_dynamiclist.h
-** \brief Header file for implementation of the "Dynamic List" valuenode conversion.
-**
-** $Id$
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**
-** 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_VALUENODE_DYNAMICLIST_H
-#define __SYNFIG_VALUENODE_DYNAMICLIST_H
-
-/* === H E A D E R S ======================================================= */
-
-#include <vector>
-#include <list>
-
-#include "valuenode.h"
-#include "time.h"
-#include "uniqueid.h"
-#include "activepoint.h"
-
-/* === M A C R O S ========================================================= */
-
-/* === C L A S S E S & S T R U C T S ======================================= */
-
-namespace synfig {
-class ValueNode_BLine;
-class Canvas;
-
-/*! \class ValueNode_DynamicList
-** \brief Animated List ValueNode
-**
-** This ValueNode was originally set up to have a list
-** of ValueNodes and their associated "on" and "off" points.
-** ie: Any time that was directly after an "on" point,
-** the item would be "on", and any time that was directly
-** after an "off" point would be "off". This is pretty intuitive.
-** However, it does have its problems.
-**
-** The problems arise when we introduce the concept of a
-** Keyframe. Keyframes can be manipulated via the Synfig
-** Application Library. They allow the user to quickly
-** and "automagically" rearrange an animation by moving
-** the associated keyframes. With the old way that the
-** "on" and "off" points were handled, this task became
-** overly complicated.
-**
-** What is required is a "symmetric" system of describing
-** "on" and "off" points. Instead of the point representing
-** the state of the item after that point in time, we have
-** the point represent <i>only that frame</i>. The state
-** of the item is calculated by looking at the points
-** around it: If either (or both) points are "on", then the
-** current state is "on". Otherwise, the point is "off"
-**
-** This may be a bit confusing at first, but it is required
-** if we want the keyframe mechanism to "just work".
-*/
-class ValueNode_DynamicList : public LinkableValueNode
-{
-public:
-
- /*! \class ListEntry
- ** \brief Contains a potential list item, and associated timing information
- **
- ** This structure contains a RHandle to a ValueNode,
- ** as well as the associated on/off timing information
- ** which determines when this item is included in the list.
- **
- ** The timing information is stored in the member <tt>timing_info</tt>.
- */
- struct ListEntry : public UniqueID
- {
- friend class ValueNode_DynamicList;
- friend class ValueNode_BLine;
- public:
- typedef synfig::Activepoint Activepoint;
-
- typedef std::list<Activepoint> ActivepointList;
-
- typedef std::pair<ActivepointList::iterator,bool> findresult;
- typedef std::pair<ActivepointList::const_iterator,bool> const_findresult;
-
-
- private:
- mutable Node::time_set times;
- public:
- ValueNode::RHandle value_node;
-
- ActivepointList timing_info;
-
- private:
- int index;
- etl::loose_handle<ValueNode> parent_;
- void set_parent_value_node(const etl::loose_handle<ValueNode> &x) { parent_=x; }
-
- public:
-
- int get_index()const { return index; }
-
-
- bool status_at_time(const Time &x)const;
-
- float amount_at_time(const Time &x, bool *rising=0)const;
-
- ActivepointList::iterator add(Time time, bool status, int priority=0);
- ActivepointList::iterator add(const Activepoint &x);
-
- findresult find_uid(const UniqueID& x);
- const_findresult find_uid(const UniqueID& x)const;
-
- findresult find_time(const Time& x);
- const_findresult find_time(const Time& x)const;
-
- ActivepointList::iterator find(const UniqueID& x);
- ActivepointList::const_iterator find(const UniqueID& x)const;
- ActivepointList::iterator find(const Time& x);
- ActivepointList::const_iterator find(const Time& x)const;
- ActivepointList::iterator find_prev(const Time& x);
- ActivepointList::const_iterator find_prev(const Time& x)const;
- ActivepointList::iterator find_next(const Time& x);
- ActivepointList::const_iterator find_next(const Time& x)const;
-
- Activepoint new_activepoint_at_time(const Time& x)const;
-
- ActivepointList::iterator add(Time time)
- { return add(time, status_at_time(time)); }
-
- void erase(const UniqueID& x);
-
- int find(const Time& begin,const Time& end,std::vector<Activepoint*>& list);
-
- const synfig::Node::time_set &get_times() const;
-
- const etl::loose_handle<ValueNode> &get_parent_value_node()const { return parent_; }
-
- ListEntry();
- ListEntry(const ValueNode::Handle &value_node);
- ListEntry(const ValueNode::Handle &value_node,Time begin, Time end);
- }; // END of struct ValueNode_DynamicList::ListEntry
-
- typedef etl::handle<ValueNode_DynamicList> Handle;
- typedef etl::handle<const ValueNode_DynamicList> ConstHandle;
-
-protected:
- ValueNode_DynamicList(ValueBase::Type container_type=ValueBase::TYPE_NIL);
-
- ValueBase::Type container_type;
-
- bool loop_;
-
-
-public:
- std::vector<ListEntry> list;
-
-public:
-
- void add(const ValueNode::Handle &value_node, int index=-1);
- void add(const ListEntry &value_node, int index=-1);
- void erase(const ValueNode::Handle &value_node);
- void reindex();
-
- int find_next_valid_entry(int x, Time t)const;
- int find_prev_valid_entry(int x, Time t)const;
-
- virtual ValueNode::LooseHandle get_link_vfunc(int i)const;
-
- virtual int link_count()const;
-
- virtual String link_name(int i)const;
-
- virtual ValueBase operator()(Time t)const;
-
- virtual ~ValueNode_DynamicList();
-
- virtual String link_local_name(int i)const;
- virtual int get_link_index_from_name(const String &name)const;
-
- virtual String get_name()const;
- virtual String get_local_name()const;
-
- bool get_loop()const { return loop_; }
- void set_loop(bool x) { loop_=x; }
-
- void set_member_canvas(etl::loose_handle<Canvas>);
-
- ValueBase::Type get_contained_type()const;
-
-
- template <typename iterator> static Handle
- create(iterator begin, iterator end)
- {
- Handle ret=create((*begin)->get_type());
- for(;begin!=end;++begin)
- ret->add(ListEntry(*begin));
- return ret;
- }
-
- void insert_time(const Time& location, const Time& delta);
- //void manipulate_time(const Time& old_begin,const Time& old_end,const Time& new_begin,const Time& new_end);
-
- virtual ValueNode* clone(const GUID& deriv_guid=GUID())const;
-
- virtual ListEntry create_list_entry(int index, Time time=0, Real origin=0.5);
-
-protected:
-
- virtual bool set_link_vfunc(int i,ValueNode::Handle x);
- LinkableValueNode* create_new()const;
-
- virtual void get_times_vfunc(Node::time_set &set) const;
-
-public:
- /*! \note The construction parameter (\a id) is the type that the list
- ** contains, rather than the type that it will yield
- ** (which is ValueBase::TYPE_LIST)
- */
- static Handle create(ValueBase::Type id=ValueBase::TYPE_NIL);
- using synfig::LinkableValueNode::get_link_vfunc;
- using synfig::LinkableValueNode::set_link_vfunc;
- static bool check_type(ValueBase::Type type);
- static ValueNode_DynamicList* create_from(const ValueBase &x=ValueBase::TYPE_GRADIENT);
-}; // END of class ValueNode_DynamicList
-
-typedef ValueNode_DynamicList::ListEntry::Activepoint Activepoint;
-typedef ValueNode_DynamicList::ListEntry::ActivepointList ActivepointList;
-
-}; // END of namespace synfig
-
-/* === E N D =============================================================== */
-
-#endif
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