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authorreinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2005-12-18 16:18:36 +0000
committerreinelt <reinelt@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2005-12-18 16:18:36 +0000
commit0a40256cd918d386d0a7b9955322cf9aa0f9da8b (patch)
tree819babba1e548bbcd9fffef6875593e7ade8b57b /widget_gpo.c
parent59524120cfc433dbf1095cf095d8035d21e69784 (diff)
downloadlcd4linux-0a40256cd918d386d0a7b9955322cf9aa0f9da8b.tar.gz
[lcd4linux @ 2005-12-18 16:18:34 by reinelt]
GPO's added again git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@602 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
Diffstat (limited to 'widget_gpo.c')
-rw-r--r--widget_gpo.c141
1 files changed, 141 insertions, 0 deletions
diff --git a/widget_gpo.c b/widget_gpo.c
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+++ b/widget_gpo.c
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+/* $Id: widget_gpo.c,v 1.1 2005/12/18 16:18:36 reinelt Exp $
+ *
+ * GPO widget handling
+ *
+ * Copyright (C) 2005 Michael Reinelt <reinelt@eunet.at>
+ * Copyright (C) 2005 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_gpo.c,v $
+ * Revision 1.1 2005/12/18 16:18:36 reinelt
+ * GPO's added again
+ *
+ */
+
+/*
+ * exported functions:
+ *
+ * WIDGET_CLASS Widget_GPO
+ * the GPO widget
+ *
+ */
+
+
+#include "config.h"
+
+#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_gpo.h"
+
+#ifdef WITH_DMALLOC
+#include <dmalloc.h>
+#endif
+
+
+void widget_gpo_update(void *Self)
+{
+ WIDGET *W = (WIDGET *) Self;
+ WIDGET_GPO *GPO = W->data;
+ RESULT result = { 0, 0, 0, NULL };
+
+ int val;
+
+ /* evaluate expression */
+ val = 0;
+ if (GPO->tree != NULL) {
+ Eval(GPO->tree, &result);
+ val = R2N(&result);
+ DelResult(&result);
+ }
+ GPO->num = W->row;
+ GPO->val = val;
+
+ /* finally, draw it! */
+ if (W->class->draw)
+ W->class->draw(W);
+
+}
+
+
+int widget_gpo_init(WIDGET * Self)
+{
+ char *section;
+ WIDGET_GPO *GPO;
+
+ /* prepare config section */
+ /* strlen("Widget:")=7 */
+ section = malloc(strlen(Self->name) + 8);
+ strcpy(section, "Widget:");
+ strcat(section, Self->name);
+
+ GPO = malloc(sizeof(WIDGET_GPO));
+ memset(GPO, 0, sizeof(WIDGET_GPO));
+
+ /* get raw expression (we evaluate them ourselves) */
+ GPO->expression = cfg_get_raw(section, "expression", NULL);
+
+ /* sanity check */
+ if (GPO->expression == NULL || *GPO->expression == '\0') {
+ error("widget %s has no expression, using '0.0'", Self->name);
+ GPO->expression = "0";
+ }
+
+ /* compile expression */
+ Compile(GPO->expression, &GPO->tree);
+
+ /* update interval (msec), default 1 sec */
+ cfg_number(section, "update", 1000, 10, -1, &(GPO->update));
+
+ free(section);
+ Self->data = GPO;
+
+ timer_add(widget_gpo_update, Self, GPO->update, 0);
+
+ return 0;
+}
+
+
+int widget_gpo_quit(WIDGET * Self)
+{
+ if (Self) {
+ if (Self->data) {
+ WIDGET_GPO *GPO = Self->data;
+ DelTree(GPO->tree);
+ free(Self->data);
+ }
+ Self->data = NULL;
+ }
+ return 0;
+}
+
+
+
+WIDGET_CLASS Widget_GPO = {
+ name:"gpo",
+ type:WIDGET_TYPE_GPO,
+ init:widget_gpo_init,
+ draw:NULL,
+ quit:widget_gpo_quit,
+};