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/*
* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef DRAWABLE_HPP
#define DRAWABLE_HPP
namespace usdx
{
/**
* Abstract base class for all classes that could be draw.
*/
class Drawable
{
private:
/**
* Whether the drawable should be visible at the moment or not.
*/
bool visible;
protected:
/**
* Pure virtual method, that descendant classes have to
* implement. It should contain all actions that are required for
* displaying this drawable. This methoed gets allways called from the
* same thread, from that the video output is initialized at programm
* start.
*
* WARNING: This method should not be called manually. If you want to
* request, that a drawable is redrawn, use repaint() instead.
*/
virtual void draw(void) = 0;
public:
Drawable(void);
virtual ~Drawable(void) {};
/**
* Method for redraw this object. If visible executes the draw method.
*/
virtual void repaint(void);
/**
* Set if the drawable should be visible.
*/
virtual void set_visible(bool value);
/**
* Returns whether the drawable should be visible.
*/
virtual const bool is_visible(void) const;
};
};
#endif
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