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/*
* This file is part of the XForms library package.
*
* XForms is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1, or
* (at your option) any later version.
*
* XForms 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with XForms. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file timer.c
*
* This file is part of the XForms library package.
* Copyright (c) 1996-2002 T.C. Zhao and Mark Overmars
* All rights reserved.
*
* Forms Object class: TIMER
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <stdlib.h>
#include "include/forms.h"
#include "flinternal.h"
/* Extra information need for input boxes. */
typedef struct
{
double time_left; /* the time (sec) left to wait */
double timer; /* total duration */
long sec, /* start time */
usec;
int on,
up;
FL_TIMER_FILTER filter;
} SPEC;
static int update_only;
/***************************************
***************************************/
static char *
default_filter( FL_OBJECT * ob FL_UNUSED_ARG,
double totalsec )
{
static char buf[ 32 ];
int hr,
minutes;
double sec;
if ( totalsec >= 3600.0 )
{
hr = totalsec / 3600.0 + 0.001;
minutes = totalsec / 60.0 + 0.001;
minutes -= hr * 60;
sec = totalsec - 60 * ( minutes + 60 * hr );
sprintf( buf, "%d:%02d:%04.1f", hr, minutes, sec );
}
else if ( totalsec >= 60.0 )
{
minutes = totalsec / 60.0 + 0.001;
sec = totalsec - minutes * 60;
sprintf( buf, "%d:%04.1f", minutes, sec );
}
else
sprintf( buf, "%.1f", totalsec );
return buf;
}
/***************************************
* draws the timer
***************************************/
static void
draw_timer( FL_OBJECT * ob )
{
FL_COLOR col;
char *str;
SPEC *sp = ob->spec;
if ( ob->type == FL_HIDDEN_TIMER )
return;
if ( ! sp->on || sp->time_left > 0.0 )
col = ob->col1;
else if ( ( int ) ( sp->time_left / FL_TIMER_BLINKRATE ) % 2 )
col = ob->col1;
else
col = ob->col2;
fl_drw_box( ob->boxtype, ob->x, ob->y, ob->w, ob->h, col, ob->bw );
if ( ob->type == FL_VALUE_TIMER && sp->time_left > 0.0 )
{
double time_shown = sp->up ? sp->timer - sp->time_left : sp->time_left;
str = ( sp->filter ? sp->filter : default_filter )( ob, time_shown );
fl_drw_text( FL_ALIGN_CENTER, ob->x, ob->y, ob->w, ob->h,
ob->lcol, ob->lstyle, ob->lsize, str );
}
}
/***************************************
* Handles an event
***************************************/
static int
handle_timer( FL_OBJECT * ob,
int event,
FL_Coord mx FL_UNUSED_ARG,
FL_Coord my FL_UNUSED_ARG,
int key FL_UNUSED_ARG,
void * ev FL_UNUSED_ARG )
{
SPEC *sp = ob->spec;
long sec,
usec;
double lasttime_left;
int ret = FL_RETURN_NONE;
switch ( event )
{
case FL_DRAW:
draw_timer( ob );
/* fall through */
case FL_DRAWLABEL:
if ( ob->type != FL_HIDDEN_TIMER && ! update_only )
{
if ( ob->type == FL_VALUE_TIMER
&& ( ob->align & ~ FL_ALIGN_INSIDE ) == FL_ALIGN_CENTER )
fl_drw_text_beside( FL_ALIGN_LEFT, ob->x, ob->y,
ob->w, ob->h, ob->lcol, ob->lstyle,
ob->lsize, ob->label );
else
fl_drw_text_beside( ob->align, ob->x, ob->y, ob->w, ob->h,
ob->lcol, ob->lstyle, ob->lsize,
ob->label );
}
break;
case FL_RELEASE:
if ( ob->type != FL_HIDDEN_TIMER && sp->time_left < 0.0 )
fl_set_timer( ob, 0.0 );
break;
case FL_STEP:
if ( ! sp->on )
break;
lasttime_left = sp->time_left;
fl_gettime( &sec, &usec );
sp->time_left = sp->timer - ( sec - sp->sec )
- ( usec - sp->usec ) * 1.0e-6;
update_only = 1;
/* Don't check for zero. we can overshoot by as much as 50msec. try
to split the error */
if ( sp->time_left > 0.02 )
{
if ( ob->type == FL_VALUE_TIMER
&& ( int ) ( 10.0 * sp->time_left ) !=
( int ) ( 10.0 * lasttime_left ) )
fl_redraw_object( ob );
}
else if ( lasttime_left > 0.0 )
{
if ( ob->type == FL_HIDDEN_TIMER )
fl_set_timer( ob, 0.0 );
else
fl_redraw_object( ob );
update_only = 0;
ret = FL_RETURN_CHANGED | FL_RETURN_END;
break;
}
else if ( ( int ) ( lasttime_left / FL_TIMER_BLINKRATE ) !=
( int ) ( sp->time_left / FL_TIMER_BLINKRATE ) )
fl_redraw_object( ob );
update_only = 0;
break;
case FL_FREEMEM:
fl_free( ob->spec );
break;
}
return ret;
}
/***************************************
* creates an object
***************************************/
FL_OBJECT *
fl_create_timer( int type,
FL_Coord x,
FL_Coord y,
FL_Coord w,
FL_Coord h,
const char * l )
{
FL_OBJECT *ob;
ob = fl_make_object( FL_TIMER, type, x, y, w, h, l, handle_timer );
ob->boxtype = FL_TIMER_BOXTYPE;
ob->col1 = FL_TIMER_COL1;
ob->col2 = FL_TIMER_COL2;
ob->align = FL_TIMER_ALIGN;
ob->lcol = FL_TIMER_LCOL;
ob->spec = fl_calloc( 1, sizeof( SPEC ) );
fl_set_timer( ob, 0.0 ); /* disabled timer */
( ( SPEC * ) ob->spec )->filter = default_filter;
return ob;
}
/***************************************
* Adds an object
***************************************/
FL_OBJECT *
fl_add_timer( int type,
FL_Coord x,
FL_Coord y,
FL_Coord w,
FL_Coord h,
const char * l )
{
FL_OBJECT *ob= fl_create_timer( type, x, y, w, h, l );
fl_add_object( fl_current_form, ob );
if ( ob->type == FL_VALUE_TIMER )
fl_set_object_dblbuffer( ob, 1 );
return ob;
}
/***************************************
* Sets the timer clock to the particular delay. (0.0 to reset)
***************************************/
void
fl_set_timer( FL_OBJECT * ob,
double total )
{
SPEC *sp = ob->spec;
sp->time_left = sp->timer = total;
sp->on = total > 0.0;
fl_set_object_automatic( ob, sp->on );
fl_gettime( &sp->sec, &sp->usec );
if ( ob->type != FL_HIDDEN_TIMER )
fl_redraw_object( ob );
}
/***************************************
* returns the amount of time left
***************************************/
double
fl_get_timer( FL_OBJECT * ob )
{
SPEC *sp = ob->spec;
return sp->time_left > 0.0 ? sp->time_left : 0.0;
}
/***************************************
***************************************/
void
fl_set_timer_countup( FL_OBJECT * ob,
int yes )
{
( ( SPEC * ) ob->spec )->up = yes;
}
/***************************************
***************************************/
FL_TIMER_FILTER
fl_set_timer_filter( FL_OBJECT * ob,
FL_TIMER_FILTER filter )
{
SPEC *sp = ob->spec;
FL_TIMER_FILTER old = sp->filter;
if ( filter != sp->filter )
{
sp->filter = filter;
fl_redraw_object( ob );
}
return old;
}
/***************************************
***************************************/
void
fl_suspend_timer( FL_OBJECT * ob )
{
( ( SPEC * ) ob->spec )->on = 0;
fl_set_object_automatic( ob, 0 );
}
/***************************************
***************************************/
void
fl_resume_timer( FL_OBJECT * ob )
{
SPEC *sp = ob->spec;
long sec, usec;
double elapsed;
if ( sp->on )
return;
elapsed = sp->timer - sp->time_left;
fl_gettime( &sec, &usec );
sp->sec = sec - ( long ) elapsed;
sp->usec = usec - ( long ) ( ( elapsed - ( long ) elapsed ) * 1.0e6 );
fl_set_object_automatic( ob, 1 );
sp->on = 1;
}
/*
* Local variables:
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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