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/*
Copyright (C) 2011-2014 Paul Davis
Original Author: Carl Hetherington <cth@carlh.net>
This program 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 program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __CANVAS_CONTAINER_H__
#define __CANVAS_CONTAINER_H__
#include "canvas/item.h"
namespace ArdourCanvas
{
/** a Container is an item which has no content of its own
* but renders its children in some geometrical arrangement.
*
* Imagined examples of containers:
*
* Container: renders each child at the child's self-determined position
* Box: renders each child along an axis (vertical or horizontal)
* Table/Grid: renders each child within a two-dimensional grid
*
* Other?
*/
class LIBCANVAS_API Container : public Item
{
public:
Container (Canvas *);
Container (Item *);
Container (Item *, Duple const & position);
/** The compute_bounding_box() method is likely to be identical
* in all containers (the union of the children's bounding boxes).
* It can be overridden as necessary.
*/
void compute_bounding_box () const;
/** The render() method is likely to be identical in all containers
* (just call Item::render_children()). It can be overridden as necessary.
*/
void render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const;
};
}
#endif
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