77 lines
1.2 KiB
C
77 lines
1.2 KiB
C
|
/*
|
||
|
* \brief Utility for implementing animated objects
|
||
|
* \author Norman Feske
|
||
|
* \date 2014-06-24
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
* Copyright (C) 2014 Genode Labs GmbH
|
||
|
*
|
||
|
* This file is part of the Genode OS framework, which is distributed
|
||
|
* under the terms of the GNU General Public License version 2.
|
||
|
*/
|
||
|
|
||
|
#ifndef _ANIMATOR_H_
|
||
|
#define _ANIMATOR_H_
|
||
|
|
||
|
class Animator
|
||
|
{
|
||
|
public:
|
||
|
|
||
|
class Item;
|
||
|
|
||
|
private:
|
||
|
|
||
|
friend class Item;
|
||
|
|
||
|
Genode::List<Item> _items;
|
||
|
|
||
|
public:
|
||
|
|
||
|
inline void animate();
|
||
|
};
|
||
|
|
||
|
|
||
|
/**
|
||
|
* Interface to be implemented by animated objects
|
||
|
*/
|
||
|
class Animator::Item : public Genode::List<Item>::Element
|
||
|
{
|
||
|
private:
|
||
|
|
||
|
Animator &_animator;
|
||
|
bool _animated = false;
|
||
|
|
||
|
public:
|
||
|
|
||
|
Item(Animator &animator) : _animator(animator) { }
|
||
|
|
||
|
virtual ~Item() { animated(false); }
|
||
|
|
||
|
virtual void animate() = 0;
|
||
|
|
||
|
void animated(bool animated)
|
||
|
{
|
||
|
if (animated == _animated)
|
||
|
return;
|
||
|
|
||
|
if (animated)
|
||
|
_animator._items.insert(this);
|
||
|
else
|
||
|
_animator._items.remove(this);
|
||
|
|
||
|
_animated = animated;
|
||
|
}
|
||
|
|
||
|
bool animated() const { return _animated; }
|
||
|
};
|
||
|
|
||
|
|
||
|
inline void Animator::animate()
|
||
|
{
|
||
|
for (Item *item = _items.first(); item; item = item->next())
|
||
|
item->animate();
|
||
|
}
|
||
|
|
||
|
#endif /* _ANIMATOR_H_ */
|