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-rw-r--r--widget_keypad.c176
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+/* $Id: widget_keypad.c,v 1.1 2006/02/21 05:50:34 reinelt Exp $
+ *
+ * keypad widget handling
+ *
+ * Copyright (C) 2006 Chris Maj <cmaj@freedomcorpse.com>
+ * 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_keypad.c,v $
+ * Revision 1.1 2006/02/21 05:50:34 reinelt
+ * keypad support from Cris Maj
+ *
+ *
+ */
+
+/*
+ * exported functions:
+ *
+ * WIDGET_CLASS Widget_Keypad
+ * the keypad 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_keypad.h"
+
+#ifdef WITH_DMALLOC
+#include <dmalloc.h>
+#endif
+
+
+void widget_keypad_update(void *Self)
+{
+ WIDGET *W = (WIDGET *) Self;
+ WIDGET_KEYPAD *keypad = W->data;
+ RESULT result = { 0, 0, 0, NULL };
+
+ int val;
+
+ /* evaluate expression */
+ val = 0;
+ if (keypad->tree != NULL) {
+ Eval(keypad->tree, &result);
+ val = R2N(&result);
+ DelResult(&result);
+ }
+ keypad->val = val;
+
+ /* finally, draw it! */
+ if (W->class->draw)
+ W->class->draw(W);
+
+}
+
+
+int widget_keypad_init(WIDGET * Self)
+{
+ char *section;
+ char *c;
+ WIDGET_KEYPAD *keypad;
+
+ /* prepare config section */
+ /* strlen("Widget:")=7 */
+ section = malloc(strlen(Self->name) + 8);
+ strcpy(section, "Widget:");
+ strcat(section, Self->name);
+
+ keypad = malloc(sizeof(WIDGET_KEYPAD));
+ memset(keypad, 0, sizeof(WIDGET_KEYPAD));
+
+ /* get raw expression (we evaluate them ourselves) */
+ keypad->expression = cfg_get_raw(section, "expression", NULL);
+
+ /* sanity check */
+ if (keypad->expression == NULL || *keypad->expression == '\0') {
+ error("widget %s has no expression, using '0.0'", Self->name);
+ keypad->expression = "0";
+ }
+
+ /* compile expression */
+ Compile(keypad->expression, &keypad->tree);
+
+ /* state: pressed (default), released */
+ c = cfg_get(section, "state", "pressed");
+ if (!strcasecmp(c, "released"))
+ keypad->key = KEY_RELEASED;
+ else
+ keypad->key = KEY_PRESSED;
+
+ /* position: confirm (default), up, down, left, right, cancel */
+ c = cfg_get(section, "position", "confirm");
+ if (!strcasecmp(c, "up"))
+ keypad->key += KEY_UP;
+ else if (!strcasecmp(c, "down"))
+ keypad->key += KEY_DOWN;
+ else if (!strcasecmp(c, "left"))
+ keypad->key += KEY_LEFT;
+ else if (!strcasecmp(c, "right"))
+ keypad->key += KEY_RIGHT;
+ else if (!strcasecmp(c, "cancel"))
+ keypad->key += KEY_CANCEL;
+ else
+ keypad->key += KEY_CONFIRM;
+
+ free(section);
+ Self->data = keypad;
+
+ return 0;
+}
+
+int widget_keypad_find(WIDGET * Self, void *needle)
+{
+ WIDGET_KEYPAD *keypad;
+ unsigned int *n = needle;
+
+ if (Self) {
+ if (Self->data) {
+ keypad = Self->data;
+ if (keypad->key == *n)
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+int widget_keypad_quit(WIDGET * Self)
+{
+ if (Self) {
+ if (Self->data) {
+ WIDGET_KEYPAD *KEYPAD = Self->data;
+ DelTree(KEYPAD->tree);
+ free(Self->data);
+ }
+ Self->data = NULL;
+ }
+ return 0;
+}
+
+
+
+WIDGET_CLASS Widget_Keypad = {
+ name:"keypad",
+ type:WIDGET_TYPE_KEYPAD,
+ init:widget_keypad_init,
+ draw:NULL,
+ find:widget_keypad_find,
+ update:widget_keypad_update,
+ quit:widget_keypad_quit,
+};