Contiki 2.6
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00001 /* 00002 * Copyright (c) 2002-2003, Adam Dunkels. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above 00011 * copyright notice, this list of conditions and the following 00012 * disclaimer in the documentation and/or other materials provided 00013 * with the distribution. 00014 * 3. The name of the author may not be used to endorse or promote 00015 * products derived from this software without specific prior 00016 * written permission. 00017 * 00018 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 00019 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 00020 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00021 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 00022 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00023 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 00024 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00025 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00026 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00027 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 * 00030 * This file is part of the Contiki operating system. 00031 * 00032 * $Id: ctk-textentry-multiline.c,v 1.2 2006/08/21 21:59:59 oliverschmidt Exp $ 00033 * 00034 */ 00035 00036 #include <string.h> 00037 00038 #include "ctk/ctk.h" 00039 00040 #include "lib/ctk-textentry-multiline.h" 00041 00042 /*-----------------------------------------------------------------------------------*/ 00043 unsigned char 00044 ctk_textentry_multiline_input(ctk_arch_key_t c, 00045 struct ctk_textentry *t) 00046 { 00047 unsigned char len; 00048 00049 switch(c) { 00050 case 0: 00051 t->xpos = (unsigned char)strlen(&t->text[t->ypos * (t->len + 1)]); 00052 if(t->xpos == t->len) { 00053 --t->xpos; 00054 } 00055 return 1; 00056 00057 case CH_CURS_UP: 00058 if(t->ypos == 0) { 00059 t->xpos = 0; 00060 return 1; 00061 } 00062 --t->ypos; 00063 break; 00064 00065 case CH_CURS_DOWN: 00066 if(t->ypos == t->h - 1) { 00067 t->xpos = (unsigned char)strlen(&t->text[t->ypos * (t->len + 1)]); 00068 if(t->xpos == t->len) { 00069 --t->xpos; 00070 } 00071 return 1; 00072 } 00073 ++t->ypos; 00074 break; 00075 00076 case CH_ENTER: 00077 if(t->ypos == t->h - 1) { 00078 return 0; 00079 } 00080 ++t->ypos; 00081 t->xpos = 0; 00082 return 1; 00083 00084 default: 00085 return 0; 00086 } 00087 00088 len = (unsigned char)strlen(&t->text[t->ypos * (t->len + 1)]); 00089 if(t->xpos > len) { 00090 t->xpos = len; 00091 } 00092 return 1; 00093 } 00094 /*-----------------------------------------------------------------------------------*/