non/FL/Fl_Blink_Button.H

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/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#pragma once
#include <FL/Fl_Button.H>
#include <FL/Fl.H>
/* Kind of like Fl_Light_Button except that the whole thing is the
* indicator and it can optionally blink */
class Fl_Blink_Button : public Fl_Button
{
bool _on;
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int _blink_interval;
bool _blinking;
bool _ignore_input;
static void
update_cb ( void *v )
{
((Fl_Blink_Button*)v)->update_cb();
}
float
blink_interval_as_fraction_of_seceond ( void ) const
{
return (float)_blink_interval / 1000;
}
void
update_cb ( void )
{
Fl::repeat_timeout( blink_interval_as_fraction_of_seceond(), update_cb, this );
_on = ! _on;
redraw();
}
public:
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enum
{
SLOW=500,
MEDIUM=300,
FAST=100,
DEFAULT=500
};
Fl_Blink_Button ( int X, int Y, int W, int H, const char *L=0 )
: Fl_Button( X, Y, W, H, L )
{
_blinking = true;
_on = false;
_ignore_input = false;
_blink_interval = DEFAULT;
type( FL_TOGGLE_BUTTON );
}
virtual
~Fl_Blink_Button ()
{
if ( value() )
Fl::remove_timeout( update_cb, this );
}
void ignore_input ( bool b )
{
_ignore_input = b;
}
bool ignore_input ( void ) const
{
return _ignore_input;
}
void blink ( bool b )
{
_blinking = b;
if ( ! b )
_on = true;
}
bool blink ( void ) const
{
return _blinking;
}
void
blink_interval ( float v )
{
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_blink_interval = v * 1000;
if ( value() )
{
Fl::remove_timeout( update_cb, this );
Fl::add_timeout( blink_interval_as_fraction_of_seceond(), update_cb, this );
}
}
virtual void value ( float v )
{
bool b = v;
if ( b != value() )
{
if ( b )
{
if ( _blinking )
{
/* just to be safe.. */
Fl::remove_timeout( update_cb, this );
Fl::add_timeout( blink_interval_as_fraction_of_seceond(), update_cb, this );
}
Fl_Button::value( b );
redraw();
}
else
{
Fl_Button::value( b );
Fl::remove_timeout( update_cb, this );
redraw();
}
}
}
virtual float value ( void ) { return (bool)Fl_Button::value(); }
virtual void
draw ( void )
{
draw_box( value() ? box() : down_box(), x(), y(), w(), h(),
( value() != 0 && _on ) ? selection_color() : color() );
draw_label();
}
virtual int handle ( int m )
{
if ( _ignore_input )
return 0;
else
return Fl_Button::handle( m );
}
};