This is tuiview.c in view mode; [Download] [Up]
/*
* tuiview.c - A (very) simple text viewer.
*
* Written by
* Ettore Perazzoli (ettore@comm2000.it)
*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* 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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA.
*
*/
#include "vice.h"
#include <string.h>
#include <pc.h>
#include <keys.h>
#include "tui.h"
static const char *find_next_line(const char *text, const char *pos)
{
const char *p = strchr(pos, '\n');
return p == NULL ? pos : p + 1;
}
static const char *find_prev_line(const char *text, const char *pos)
{
const char *p;
if (pos - text <= 2)
return text;
for (p = pos - 2; p != text; p--)
if (*p == '\n')
break;
if (*p == '\n')
p++;
return p;
}
static void update(int x, int y, int width, int height, const char *text)
{
const char *p = text;
int i, j;
for (j = 0; j < height; j++) {
for (i = 0; i < width; i++) {
if (*p != '\n' && *p != '\0') {
tui_put_char(x + i, y + j, *p);
p++;
} else {
tui_put_char(x + i, y + j, ' ');
}
}
if (*p == '\n')
p++;
}
}
void tui_view_text(int width, int height, const char *title, const char *text)
{
const char *p;
tui_area_t backing_store = NULL;
int x, y, i;
int need_update = 1;
x = CENTER_X(width);
y = CENTER_Y(height);
tui_display_window(x, y, width, height, MESSAGE_BORDER, MESSAGE_BACK,
title, &backing_store);
tui_set_attr(MESSAGE_BORDER, MESSAGE_BACK, 0);
tui_put_char(x + width - 1, y + 1, 0x1e); /* Up arrow */
tui_put_char(x + width - 1, y + height - 2, 0x1f); /* Down arrow */
for (i = y + 2; i < y + height - 2; i++)
tui_put_char(x + width - 1, i, 0xb1);
tui_set_attr(MESSAGE_FORE, MESSAGE_BACK, 0);
p = text;
while (1) {
int key;
if (need_update) {
update(x + 2, y + 1, width - 4, height - 2, p);
need_update = 0;
}
key = getkey();
switch (key) {
case K_Escape:
case K_Return:
tui_area_put(backing_store, x, y);
tui_area_free(backing_store);
return;
case K_Up:
case K_Left:
p = find_prev_line(text, p);
need_update = 1;
break;
case K_Down:
case K_Right:
p = find_next_line(text, p);
need_update = 1;
break;
case K_PageDown:
for (i = 0; i < height - 3; i++)
p = find_next_line(text, p);
need_update = 1;
break;
case K_PageUp:
for (i = 0; i < height - 3; i++)
p = find_prev_line(text, p);
need_update = 1;
break;
}
}
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.