nes-proj/core/lib/ctk-filedialog.c

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/*
* Copyright (c) 2004, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* Author: Adam Dunkels <adam@sics.se>
*
* $Id: ctk-filedialog.c,v 1.1 2006/06/17 22:41:17 adamdunkels Exp $
*/
#include "contiki.h"
#include "lib/ctk-filedialog.h"
#include "ctk/ctk.h"
#include "cfs/cfs.h"
#include <string.h>
#define MAX_NUMFILES 40
#define FILES_WIDTH 17
#define FILES_HEIGHT 14
static struct ctk_window dialog;
static char leftptr[FILES_HEIGHT];
static struct ctk_label leftptrlabel =
{CTK_LABEL(0, 1, 1, FILES_HEIGHT, leftptr)};
static char files[FILES_WIDTH * MAX_NUMFILES];
static struct ctk_label fileslabel =
{CTK_LABEL(1, 1,
FILES_WIDTH, FILES_HEIGHT, files)};
static char rightptr[FILES_HEIGHT];
static struct ctk_label rightptrlabel =
{CTK_LABEL(1 + FILES_WIDTH, 1, 1, FILES_HEIGHT, rightptr)};
static char filename[FILES_WIDTH + 1];
static struct ctk_textentry filenameentry =
{CTK_TEXTENTRY(1, 2 + FILES_HEIGHT, FILES_WIDTH, 1, filename,
FILES_WIDTH)};
static struct ctk_button button;
#define STATE_CLOSED 0
#define STATE_OPEN 1
static char state = STATE_CLOSED;
static unsigned char fileptr, dirfileptr;
static struct cfs_dir dir;
/*---------------------------------------------------------------------------*/
static void
clearptr(void)
{
leftptr[fileptr] = ' ';
rightptr[fileptr] = ' ';
}
/*---------------------------------------------------------------------------*/
static void
showptr(void)
{
leftptr[fileptr] = '>';
rightptr[fileptr] = '<';
strncpy(filename,
&files[fileptr * FILES_WIDTH],
FILES_WIDTH);
CTK_WIDGET_REDRAW(&filenameentry);
CTK_WIDGET_REDRAW(&leftptrlabel);
CTK_WIDGET_REDRAW(&rightptrlabel);
}
/*---------------------------------------------------------------------------*/
void
ctk_filedialog_init(register struct ctk_filedialog_state *s)
{
state = STATE_CLOSED;
}
/*---------------------------------------------------------------------------*/
void
ctk_filedialog_open(register struct ctk_filedialog_state *s,
const char *buttontext, process_event_t event)
{
ctk_dialog_new(&dialog, 20, 5 + FILES_HEIGHT);
CTK_WIDGET_ADD(&dialog, &leftptrlabel);
CTK_WIDGET_ADD(&dialog, &fileslabel);
CTK_WIDGET_ADD(&dialog, &rightptrlabel);
CTK_WIDGET_ADD(&dialog, &filenameentry);
CTK_BUTTON_NEW(&button, 1, 4 + FILES_HEIGHT, strlen(buttontext), (char *)buttontext);
CTK_WIDGET_ADD(&dialog, &button);
ctk_dialog_open(&dialog);
state = STATE_OPEN;
memset(filename, 0, sizeof(filename));
memset(leftptr, ' ', sizeof(leftptr));
memset(rightptr, ' ', sizeof(rightptr));
memset(files, 0, sizeof(files));
fileptr = 0;
dirfileptr = 0;
showptr();
cfs_opendir(&dir, ".");
process_post(PROCESS_CURRENT(), PROCESS_EVENT_CONTINUE, s);
}
/*---------------------------------------------------------------------------*/
char
ctk_filedialog_eventhandler(struct ctk_filedialog_state *s,
process_event_t ev, process_data_t data)
{
static struct cfs_dirent dirent;
if(state == STATE_OPEN) {
if(ev == ctk_signal_widget_activate &&
data == (process_data_t)&button) {
ctk_dialog_close();
state = STATE_CLOSED;
process_post(PROCESS_CURRENT(), s->ev, &filename);
return 1;
} else if(ev == PROCESS_EVENT_CONTINUE &&
(process_data_t)s == data) {
if(cfs_readdir(&dir, &dirent) == 0 &&
dirfileptr < MAX_NUMFILES) {
strncpy(&files[dirfileptr * FILES_WIDTH],
dirent.name, FILES_WIDTH);
CTK_WIDGET_REDRAW(&fileslabel);
++dirfileptr;
process_post(PROCESS_CURRENT(), PROCESS_EVENT_CONTINUE, s);
} else {
fileptr = 0;
cfs_closedir(&dir);
}
return 1;
} else if(ev == ctk_signal_keypress) {
if((ctk_arch_key_t)data == CH_CURS_UP) {
clearptr();
if(fileptr > 0) {
--fileptr;
}
showptr();
return 1;
} else if((ctk_arch_key_t)data == CH_CURS_DOWN) {
clearptr();
if(fileptr < FILES_HEIGHT - 1) {
++fileptr;
}
showptr();
return 1;
}
}
}
return 0;
}
/*---------------------------------------------------------------------------*/