/****************************************************************************
* Copyright 2018,2020 Thomas E. Dickey *
* Copyright 2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/*
* $Id: popup_msg.c,v 1.10 2020/02/02 23:34:34 tom Exp $
*
* Show a multi-line message in a window which may extend beyond the screen.
*
* Thomas Dickey - 2017/4/15.
*/
#include <test.priv.h>
#include <popup_msg.h>
#if HAVE_NEWPAD
static WINDOW *old_window;
static void
begin_popup(void)
{
doupdate();
old_window = dupwin(curscr);
}
static void
end_popup(void)
{
touchwin(old_window);
wnoutrefresh(old_window);
doupdate();
delwin(old_window);
}
/*
* Display a temporary window, e.g., to display a help-message.
*/
void
popup_msg(WINDOW *parent, const char *const *msg)
{
int x0 = 4;
int y0 = 2;
int y1 = 0;
int y2 = 0;
int wide = getmaxx(parent) - ((x0 + 1) * 2);
int high = getmaxy(parent) - ((y0 + 1) * 2);
WINDOW *help;
WINDOW *data;
int n;
int width = 0;
int length;
int last_y;
int ch = ERR;
for (n = 0; msg[n] != 0; ++n) {
int check = (int) strlen(msg[n]);
if (width < check)
width = check;
}
length = n;
if ((help = newwin(high, wide, y0, x0)) == 0)
return;
if ((data = newpad(length + 1, width)) == 0) {
delwin(help);
return;
}
begin_popup();
keypad(data, TRUE);
for (n = 0; n < length; ++n) {
waddstr(data, msg[n]);
if ((n + 1) < length) {
waddch(data, '\n');
}
}
y2 = getcury(data);
last_y = (y2 - (high - 3));
do {
switch (ch) {
case KEY_HOME:
y1 = 0;
break;
case KEY_END:
y1 = last_y;
break;
case KEY_PREVIOUS:
case KEY_PPAGE:
if (y1 > 0) {
y1 -= high / 2;
if (y1 < 0)
y1 = 0;
} else {
beep();
}
break;
case KEY_NEXT:
case KEY_NPAGE:
if (y1 < last_y) {
y1 += high / 2;
if (y1 > last_y)
y1 = last_y;
} else {
beep();
}
break;
case CTRL('P'):
case KEY_UP:
if (y1 > 0)
--y1;
else
beep();
break;
case CTRL('N'):
case KEY_DOWN:
if (y1 < last_y)
++y1;
else
beep();
break;
default:
beep();
break;
case ERR:
break;
}
werase(help);
box(help, 0, 0);
wnoutrefresh(help);
pnoutrefresh(data, y1, 0, y0 + 1, x0 + 1, high, wide);
doupdate();
} while ((ch = wgetch(data)) != ERR && ch != QUIT && ch != ESCAPE);
werase(help);
wrefresh(help);
delwin(help);
delwin(data);
end_popup();
}
void
popup_msg2(WINDOW *parent, char **msg)
{
popup_msg(parent, (const char *const *) msg);
}
#else
void
popup_msg(WINDOW *parent, const char *const *msg)
{
(void) parent;
(void) msg;
beep();
}
#endif
