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/* $Id: widget_icon.c,v 1.2 2004/01/23 07:04:39 reinelt Exp $
*
* icon widget handling
*
* Copyright 2003,2004 Michael Reinelt <reinelt@eunet.at>
* Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.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, 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.
*
*
* $Log: widget_icon.c,v $
* Revision 1.2 2004/01/23 07:04:39 reinelt
* icons finished!
*
* Revision 1.1 2004/01/23 04:54:03 reinelt
* icon widget added (not finished yet!)
*
*/
/*
* exported functions:
*
* WIDGET_CLASS Widget_Icon
* the icon widget
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "debug.h"
#include "cfg.h"
#include "evaluator.h"
#include "timer.h"
#include "widget.h"
#include "widget_icon.h"
// icons always are 8 pixels high
#define YRES 8
static void widget_icon_read_bitmap (char *section, WIDGET_ICON *Icon)
{
int row, n;
char key[15];
char *val, *v;
char *map;
for (row=0; row<YRES; row++) {
snprintf (key, sizeof(key), "Bitmap.Row%d", row+1);
val=cfg_get(section, key, "");
map=Icon->bitmap+row;
n=0;
for (v=val; *v!='\0'; v++) {
if (n>=Icon->maxmap) {
Icon->maxmap++;
Icon->bitmap=realloc(Icon->bitmap, Icon->maxmap*YRES*sizeof(char));
memset (Icon->bitmap+n*YRES, 0, YRES*sizeof(char));
map=Icon->bitmap+n*YRES+row;
}
switch (*v) {
case '|':
n++;
map+=YRES;
break;
case '*':
(*map)<<=1;
(*map)|=1;
break;
default:
(*map)<<=1;
}
}
}
}
void widget_icon_update (void *Self)
{
WIDGET *W = (WIDGET*)Self;
WIDGET_ICON *Icon = W->data;
RESULT result = {0, 0.0, NULL};
// evaluate expressions
Icon->speed = 100;
if (Icon->speed_expr!=NULL && *Icon->speed_expr!='\0') {
Eval(Icon->speed_expr, &result);
Icon->speed = R2N(&result);
if (Icon->speed<10) Icon->speed=10;
DelResult(&result);
}
// rotate icon bitmap
Icon->curmap++;
if (Icon->curmap >= Icon->maxmap)
Icon->curmap=0;
// finally, draw it!
if (W->class->draw)
W->class->draw(W);
// store currently visible bitmap
Icon->prvmap=Icon->curmap;
// add a new one-shot timer
timer_add (widget_icon_update, Self, Icon->speed, 1);
}
int widget_icon_init (WIDGET *Self)
{
char *section;
WIDGET_ICON *Icon;
// prepare config section
// strlen("Widget:")=7
section=malloc(strlen(Self->name)+8);
strcpy(section, "Widget:");
strcat(section, Self->name);
Icon=malloc(sizeof(WIDGET_ICON));
memset (Icon, 0, sizeof(WIDGET_ICON));
// get raw expressions (we evaluate them ourselves)
Icon->speed_expr = cfg_get_raw (section, "speed", NULL);
// sanity check
if (Icon->speed_expr==NULL || *Icon->speed_expr=='\0') {
error ("Icon %s has no speed, using '100'", Self->name);
Icon->speed_expr="100";
}
// read bitmap
widget_icon_read_bitmap (section, Icon);
free (section);
Self->data=Icon;
// as the speed is evaluatod on every call, we use 'one-shot'-timers.
// The timer will be reactivated on every call to widget_icon_update().
// We do the initial call here...
Icon->prvmap=-1;
// reset ascii
Icon->ascii=-1;
// just do it!
widget_icon_update(Self);
return 0;
}
int widget_icon_quit (WIDGET *Self)
{
WIDGET_ICON *Icon = Self->data;
if (Self->data) {
if (Icon->bitmap) free (Icon->bitmap);
free (Self->data);
Self->data=NULL;
}
return 0;
}
WIDGET_CLASS Widget_Icon = {
name: "icon",
init: widget_icon_init,
draw: NULL,
quit: widget_icon_quit,
};
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