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contiki/backyard/apps/editor/editor.c

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/*
* Copyright (c) 2004, Adam Dunkels.
* 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: editor.c,v 1.1 2007/05/23 23:34:33 oliverschmidt Exp $
*/
#define EDITOR_CONF_WIDTH 32
#define EDITOR_CONF_HEIGHT 16
#define EDITOR_CONF_MAX_FILENAME_LEN 16
#include "contiki.h"
#include "contiki-lib.h"
#include "ctk/ctk.h"
#include "cfs/cfs.h"
#include "lib/ctk-filedialog.h"
#define ISO_nl 0x0a
PROCESS(editor_process, "Editor");
static struct ctk_window window;
#define LINE_LEN 60
#define NUM_LINES EDITOR_CONF_HEIGHT
struct line {
struct line *next, *prev;
char text[LINE_LEN];
};
MEMB(linesmem, struct line, NUM_LINES);
static struct line *lines;
static struct {
unsigned char x, y;
struct ctk_label labels[NUM_LINES];
} editor_state;
static struct ctk_button openbutton =
{CTK_BUTTON(0, 0, 4, "Open")};
static char statustext[EDITOR_CONF_WIDTH + 1];
static struct ctk_label statuslabel =
{CTK_LABEL(0, EDITOR_CONF_HEIGHT + 2, EDITOR_CONF_WIDTH, 1, statustext)};
static struct ctk_menu menu;
static unsigned char menuitem_new, menuitem_open, menuitem_save;
static char filename[EDITOR_CONF_MAX_FILENAME_LEN];
static struct ctk_filedialog_state filedialog;
enum {
OPEN_EVENT
};
/*---------------------------------------------------------------------------*/
static void
show_statustext(char *text1, char *text2)
{
int len;
len = strlen(text1);
if(len < sizeof(statustext)) {
strncpy(statustext, text1, sizeof(statustext));
strncpy(statustext + len, text2, sizeof(statustext) - len);
CTK_WIDGET_REDRAW(&statuslabel);
}
}
/*---------------------------------------------------------------------------*/
static void
editor_start(void)
{
unsigned char i;
register struct ctk_label *label;
struct line *l, *m;
m = NULL;
for(i = 0; i < NUM_LINES; ++i) {
label = &editor_state.labels[i];
l = (struct line *)memb_alloc(&linesmem);
if(l != NULL) {
l->next = NULL;
l->prev = m;
if(m == NULL) {
/* First line */
lines = l;
} else {
m->next = l;
}
CTK_LABEL_NEW(label, 0, i + 1, EDITOR_CONF_WIDTH, 1, l->text);
CTK_WIDGET_SET_FLAG(label, CTK_WIDGET_FLAG_MONOSPACE);
CTK_WIDGET_ADD(&window, label);
}
m = l;
}
}
/*---------------------------------------------------------------------------*/
static void
editor_eventhandler(process_event_t ev, process_data_t data)
{
char *textptr, *textptr2;
unsigned char len;
if(ev == ctk_signal_keypress) {
/* CTK_WIDGET_FOCUS(t->label.window, &t->label);*/
textptr = &(editor_state.labels[editor_state.y].text[editor_state.x]);
*textptr &= 0x7f;
CTK_WIDGET_REDRAW(&(editor_state.labels[editor_state.y]));
switch((ctk_arch_key_t)data) {
case CH_CURS_DOWN:
++editor_state.y;
if(editor_state.y >= EDITOR_CONF_HEIGHT) {
editor_state.y = EDITOR_CONF_HEIGHT - 1;
}
break;
case CH_CURS_UP:
if(editor_state.y > 0) {
--editor_state.y;
}
break;
case CH_CURS_RIGHT:
if(editor_state.x < strlen(editor_state.labels[editor_state.y].text)) {
++editor_state.x;
}
break;
case CH_CURS_LEFT:
if(editor_state.x > 0) {
--editor_state.x;
} else {
if(editor_state.y > 0) {
--editor_state.y;
editor_state.x = strlen(editor_state.labels[editor_state.y].text);
}
}
break;
case CH_ENTER:
editor_state.x = 0;
++editor_state.y;
if(editor_state.y >= EDITOR_CONF_HEIGHT) {
editor_state.y = EDITOR_CONF_HEIGHT - 1;
}
break;
case CH_DEL:
/* len = t->label.w - t->xpos;
if(t->xpos > 0 && len > 0) {
strncpy(textptr - 1, textptr,
len);
*(textptr + len - 1) = 0;
--t->xpos;
}*/
break;
default:
len = EDITOR_CONF_WIDTH - editor_state.x;
if(len > 0) {
textptr2 = textptr + len - 1;
while(textptr2 + 1 > textptr) {
*(textptr2 + 1) = *textptr2;
--textptr2;
}
*textptr = (char)data;
++editor_state.x;
if(editor_state.x == EDITOR_CONF_WIDTH) {
editor_state.x = 0;
if(editor_state.y < EDITOR_CONF_HEIGHT - 1) {
++editor_state.y;
}
}
}
break;
}
textptr = &(editor_state.labels[editor_state.y].text[editor_state.x]);
*textptr |= 0x80;
CTK_WIDGET_REDRAW(&(editor_state.labels[editor_state.y]));
/* } else if(s == ctk_signal_widget_activate &&
data == (process_data_t)t) {
textptr = &(t->label.text[t->ypos * t->label.w + t->xpos]);
*textptr &= 0x7f;
t->xpos = 0;
if(t->ypos < t->label.h - 1) {
++t->ypos;
}
textptr = &(t->label.text[t->ypos * t->label.w + t->xpos]);
*textptr |= 0x80;
CTK_WIDGET_REDRAW(&t->label);*/
}
}
/*---------------------------------------------------------------------------*/
static void
open_file(char *name)
{
int fd;
struct line *l;
char line[LINE_LEN];
char *cptr;
int i, len, clen;
fd = cfs_open(name, 0);
if(fd < 0) {
show_statustext("Could not open file ", name);
return;
}
l = lines;
cptr = l->text;
clen = LINE_LEN;
do {
/* Read a portion of the input file */
len = cfs_read(fd, line, LINE_LEN);
/* Split the input into lines. */
for(i = 0; i < len; ++i) {
if(line[i] == ISO_nl ||
clen == 0) {
*cptr = 0;
l = l->next;
if(l != NULL) {
cptr = l->text;
clen = LINE_LEN;
} else {
len = -1;
break;
}
} else {
*cptr++ = line[i];
--clen;
}
}
} while(len > 0);
cfs_close(fd);
}
/*---------------------------------------------------------------------------*/
static void
quit(void)
{
ctk_window_close(&window);
process_exit(&editor_process);
LOADER_UNLOAD();
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(editor_process, ev, data)
{
PROCESS_BEGIN();
memb_init(&linesmem);
ctk_window_new(&window,
EDITOR_CONF_WIDTH + 2,
EDITOR_CONF_HEIGHT + 3,
"Editor");
CTK_WIDGET_ADD(&window, &openbutton);
CTK_WIDGET_ADD(&window, &statuslabel);
CTK_WIDGET_FOCUS(&window, &openbutton);
editor_start();
ctk_window_open(&window);
while(1) {
PROCESS_WAIT_EVENT();
if(ctk_filedialog_eventhandler(&filedialog, ev, data)) {
} else {
if(ev == PROCESS_EVENT_EXIT) {
quit();
} else if(ev == OPEN_EVENT) {
/* printf("Open file '%s'\n", (char *)data);*/
open_file((char *)data);
ctk_window_redraw(&window);
} else {
if(ev == ctk_signal_window_close &&
data == (process_data_t)&window) {
quit();
} else if(ev == ctk_signal_widget_activate) {
if(data == (process_data_t)&openbutton) {
ctk_filedialog_open(&filedialog, "Open", OPEN_EVENT);
}
} else {
editor_eventhandler(ev, data);
}
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/*LOADER_INIT_FUNC(editor_init, arg)
{
arg_free(arg);
id = ek_start(&p);
}*/
/*---------------------------------------------------------------------------*/
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