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0a40256cd9
GPO's added again git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@602 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
142 lines
3.0 KiB
C
142 lines
3.0 KiB
C
/* $Id: widget_gpo.c,v 1.1 2005/12/18 16:18:36 reinelt Exp $
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*
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* GPO widget handling
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*
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* Copyright (C) 2005 Michael Reinelt <reinelt@eunet.at>
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* Copyright (C) 2005 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* $Log: widget_gpo.c,v $
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* Revision 1.1 2005/12/18 16:18:36 reinelt
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* GPO's added again
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*
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*/
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/*
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* exported functions:
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*
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* WIDGET_CLASS Widget_GPO
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* the GPO widget
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*
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "debug.h"
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#include "cfg.h"
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#include "evaluator.h"
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#include "timer.h"
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#include "widget.h"
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#include "widget_gpo.h"
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif
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void widget_gpo_update(void *Self)
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{
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WIDGET *W = (WIDGET *) Self;
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WIDGET_GPO *GPO = W->data;
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RESULT result = { 0, 0, 0, NULL };
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int val;
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/* evaluate expression */
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val = 0;
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if (GPO->tree != NULL) {
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Eval(GPO->tree, &result);
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val = R2N(&result);
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DelResult(&result);
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}
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GPO->num = W->row;
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GPO->val = val;
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/* finally, draw it! */
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if (W->class->draw)
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W->class->draw(W);
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}
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int widget_gpo_init(WIDGET * Self)
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{
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char *section;
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WIDGET_GPO *GPO;
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/* prepare config section */
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/* strlen("Widget:")=7 */
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section = malloc(strlen(Self->name) + 8);
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strcpy(section, "Widget:");
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strcat(section, Self->name);
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GPO = malloc(sizeof(WIDGET_GPO));
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memset(GPO, 0, sizeof(WIDGET_GPO));
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/* get raw expression (we evaluate them ourselves) */
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GPO->expression = cfg_get_raw(section, "expression", NULL);
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/* sanity check */
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if (GPO->expression == NULL || *GPO->expression == '\0') {
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error("widget %s has no expression, using '0.0'", Self->name);
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GPO->expression = "0";
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}
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/* compile expression */
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Compile(GPO->expression, &GPO->tree);
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/* update interval (msec), default 1 sec */
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cfg_number(section, "update", 1000, 10, -1, &(GPO->update));
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free(section);
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Self->data = GPO;
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timer_add(widget_gpo_update, Self, GPO->update, 0);
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return 0;
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}
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int widget_gpo_quit(WIDGET * Self)
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{
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if (Self) {
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if (Self->data) {
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WIDGET_GPO *GPO = Self->data;
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DelTree(GPO->tree);
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free(Self->data);
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}
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Self->data = NULL;
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}
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return 0;
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}
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WIDGET_CLASS Widget_GPO = {
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name:"gpo",
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type:WIDGET_TYPE_GPO,
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init:widget_gpo_init,
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draw:NULL,
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quit:widget_gpo_quit,
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};
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