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Diffstat (limited to '')
| -rw-r--r-- | widget_timer.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/widget_timer.c b/widget_timer.c new file mode 100644 index 0000000..6c9c832 --- /dev/null +++ b/widget_timer.c @@ -0,0 +1,175 @@ +/* $Id: widget_timer.c,v 1.1 2006/01/23 06:17:18 reinelt Exp $ + * + * timer widget handling + * + * Copyright (C) 2006 Michael Reinelt <reinelt@eunet.at> + * Copyright (C) 2006 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_timer.c,v $ + * Revision 1.1 2006/01/23 06:17:18 reinelt + * timer widget added + * + */ + +/* + * exported functions: + * + * WIDGET_CLASS Widget_Timer + * the timer widget + * + */ + + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> + +#include "debug.h" +#include "cfg.h" +#include "qprintf.h" +#include "evaluator.h" +#include "timer.h" +#include "widget.h" +#include "widget_timer.h" + +#ifdef WITH_DMALLOC +#include <dmalloc.h> +#endif + +void widget_timer_update(void *Self) +{ + WIDGET *W = (WIDGET *) Self; + WIDGET_TIMER *Timer = W->data; + RESULT result = { 0, 0, 0, NULL }; + + /* evaluate expressions */ + Timer->update = 10; + if (Timer->update_tree != NULL) { + Eval(Timer->update_tree, &result); + Timer->update = R2N(&result); + if (Timer->update < 10) + Timer->update = 10; + DelResult(&result); + } + + Timer->active = 1; + if (Timer->active_tree != NULL) { + Eval(Timer->active_tree, &result); + Timer->active = R2N(&result); + if (Timer->active < 0) + Timer->active = 0; + DelResult(&result); + } + + /* finally, fire it! */ + if (Timer->active) { + Eval(Timer->expr_tree, &result); + DelResult(&result); + } + + /* add a new one-shot timer */ + timer_add(widget_timer_update, Self, Timer->update, 1); +} + + + +int widget_timer_init(WIDGET * Self) +{ + char *section; + WIDGET_TIMER *Timer; + + /* prepare config section */ + /* strlen("Widget:")=7 */ + section = malloc(strlen(Self->name) + 8); + strcpy(section, "Widget:"); + strcat(section, Self->name); + + Timer = malloc(sizeof(WIDGET_TIMER)); + memset(Timer, 0, sizeof(WIDGET_TIMER)); + + /* get raw expressions (we evaluate them ourselves) */ + Timer->expression = cfg_get_raw(section, "axpression", NULL); + Timer->update_expr = cfg_get_raw(section, "update", "100"); + Timer->active_expr = cfg_get_raw(section, "active", "1"); + + /* sanity checks */ + if (Timer->expression == NULL || *Timer->expression == '\0') { + error("Timer %s has no expression, using '1'", Self->name); + Timer->expression = "1"; + } + if (Timer->update_expr == NULL || *Timer->update_expr == '\0') { + error("Timer %s has no update, using '100'", Self->name); + Timer->update_expr = "100"; + } + + /* compile'em */ + Compile(Timer->expression, &Timer->expr_tree); + Compile(Timer->update_expr, &Timer->update_tree); + Compile(Timer->active_expr, &Timer->active_tree); + + + free(section); + Self->data = Timer; + + /* just do it! */ + widget_timer_update(Self); + + return 0; +} + + +int widget_timer_quit(WIDGET * Self) +{ + if (Self) { + /* do not deallocate child widget! */ + if (Self->parent == NULL) { + if (Self->data) { + WIDGET_TIMER *Timer = Self->data; + DelTree(Timer->expr_tree); + DelTree(Timer->update_tree); + DelTree(Timer->active_tree); + free(Self->data); + Self->data = NULL; + } + } + } + + return 0; + +} + + +int widget_timer_register(void) +{ + WIDGET_CLASS wc; + wc = Widget_Timer; + widget_register(&wc); + return 0; +} + + +WIDGET_CLASS Widget_Timer = { + name:"timer", + type:WIDGET_TYPE_TIMER, + init:widget_timer_init, + draw:NULL, + quit:widget_timer_quit, +}; |