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