core/lib/ctk-filedialog.c

   1 /*
   2  * Copyright (c) 2004, Swedish Institute of Computer Science.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the Institute nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * This file is part of the Contiki operating system.
  30  *
  31  * Author: Adam Dunkels <adam@sics.se>
  32  *
  33  * $Id: ctk-filedialog.c,v 1.2 2007/08/30 14:39:18 matsutsuka Exp $
  34  */
  35
  36 #include "contiki.h"
  37 #include "lib/ctk-filedialog.h"
  38 #include "ctk/ctk.h"
  39 #include "cfs/cfs.h"
  40
  41 #include <string.h>
  42
  43 #define MAX_NUMFILES 40
  44 #define FILES_WIDTH 17
  45 #if FILES_CONF_HEIGHT
  46 #define FILES_HEIGHT FILES_CONF_HEIGHT
  47 #else
  48 #define FILES_HEIGHT 14
  49 #endif
  50
  51 static struct ctk_window dialog;
  52 static char leftptr[FILES_HEIGHT];
  53 static struct ctk_label leftptrlabel =
  54   {CTK_LABEL(0, 1, 1, FILES_HEIGHT, leftptr)};
  55
  56 static char files[FILES_WIDTH * MAX_NUMFILES];
  57 static struct ctk_label fileslabel =
  58   {CTK_LABEL(1, 1,
  59              FILES_WIDTH, FILES_HEIGHT, files)};
  60
  61 static char rightptr[FILES_HEIGHT];
  62 static struct ctk_label rightptrlabel =
  63   {CTK_LABEL(1 + FILES_WIDTH, 1, 1, FILES_HEIGHT, rightptr)};
  64
  65 static char filename[FILES_WIDTH + 1];
  66 static struct ctk_textentry filenameentry =
  67   {CTK_TEXTENTRY(1, 2 + FILES_HEIGHT, FILES_WIDTH, 1, filename,
  68                  FILES_WIDTH)};
  69
  70 static struct ctk_button button;
  71
  72 #define STATE_CLOSED 0
  73 #define STATE_OPEN 1
  74 static char state = STATE_CLOSED;
  75 static unsigned char fileptr, dirfileptr;
  76 static struct cfs_dir dir;
  77 /*---------------------------------------------------------------------------*/
  78 static void
  79 clearptr(void)
  80 {
  81   leftptr[fileptr] = ' ';
  82   rightptr[fileptr] = ' ';
  83 }
  84 /*---------------------------------------------------------------------------*/
  85 static void
  86 showptr(void)
  87 {
  88   leftptr[fileptr] = '>';
  89   rightptr[fileptr] = '<';
  90
  91   strncpy(filename,
  92           &files[fileptr * FILES_WIDTH],
  93           FILES_WIDTH);
  94
  95   CTK_WIDGET_REDRAW(&filenameentry);
  96   CTK_WIDGET_REDRAW(&leftptrlabel);
  97   CTK_WIDGET_REDRAW(&rightptrlabel);
  98 }
  99 /*---------------------------------------------------------------------------*/
 100 void
 101 ctk_filedialog_init(CC_REGISTER_ARG struct ctk_filedialog_state *s)
 102 {
 103   state = STATE_CLOSED;
 104 }
 105 /*---------------------------------------------------------------------------*/
 106 void
 107 ctk_filedialog_open(CC_REGISTER_ARG struct ctk_filedialog_state *s,
 108                     const char *buttontext, process_event_t event)
 109 {
 110   ctk_dialog_new(&dialog, 20, 5 + FILES_HEIGHT);
 111   CTK_WIDGET_ADD(&dialog, &leftptrlabel);
 112   CTK_WIDGET_ADD(&dialog, &fileslabel);
 113   CTK_WIDGET_ADD(&dialog, &rightptrlabel);
 114   CTK_WIDGET_ADD(&dialog, &filenameentry);
 115   CTK_BUTTON_NEW(&button, 1, 4 + FILES_HEIGHT, strlen(buttontext), (char *)buttontext);
 116   CTK_WIDGET_ADD(&dialog, &button);
 117   ctk_dialog_open(&dialog);
 118   state = STATE_OPEN;
 119   memset(filename, 0, sizeof(filename));
 120   memset(leftptr, ' ', sizeof(leftptr));
 121   memset(rightptr, ' ', sizeof(rightptr));
 122   memset(files, 0, sizeof(files));
 123
 124   fileptr = 0;
 125   dirfileptr = 0;
 126   showptr();
 127   cfs_opendir(&dir, ".");
 128   process_post(PROCESS_CURRENT(), PROCESS_EVENT_CONTINUE, s);
 129 }
 130 /*---------------------------------------------------------------------------*/
 131 char
 132 ctk_filedialog_eventhandler(struct ctk_filedialog_state *s,
 133                             process_event_t ev, process_data_t data)
 134 {
 135   static struct cfs_dirent dirent;
 136
 137   if(state == STATE_OPEN) {
 138     if(ev == ctk_signal_widget_activate &&
 139        data == (process_data_t)&button) {
 140       ctk_dialog_close();
 141       state = STATE_CLOSED;
 142       process_post(PROCESS_CURRENT(), s->ev, &filename);
 143       return 1;
 144     } else if(ev == PROCESS_EVENT_CONTINUE &&
 145               (process_data_t)s == data) {
 146       if(cfs_readdir(&dir, &dirent) == 0 &&
 147          dirfileptr < MAX_NUMFILES) {
 148         strncpy(&files[dirfileptr * FILES_WIDTH],
 149                 dirent.name, FILES_WIDTH);
 150         CTK_WIDGET_REDRAW(&fileslabel);
 151         ++dirfileptr;
 152         process_post(PROCESS_CURRENT(), PROCESS_EVENT_CONTINUE, s);
 153       } else {
 154         fileptr = 0;
 155         cfs_closedir(&dir);
 156       }
 157       return 1;
 158     } else if(ev == ctk_signal_keypress) {
 159       if((ctk_arch_key_t)data == CH_CURS_UP) {
 160         clearptr();
 161         if(fileptr > 0) {
 162           --fileptr;
 163         }
 164         showptr();
 165         return 1;
 166       } else if((ctk_arch_key_t)data == CH_CURS_DOWN) {
 167         clearptr();
 168         if(fileptr < FILES_HEIGHT - 1) {
 169           ++fileptr;
 170         }
 171         showptr();
 172         return 1;
 173       }
 174     }
 175   }
 176   return 0;
 177 }
 178 /*---------------------------------------------------------------------------*/