/* * $Id: msgbox.c,v 1.38 2004/11/18 21:57:00 tom Exp $ * * msgbox.c -- implements the message box and info box * * AUTHOR: Savio Lam (lam836@cs.cuhk.hk) * and: Thomas E. Dickey * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "dialog.h" /* * Display the message in a scrollable window. Actually the way it works is * that we create a "tall" window of the proper width, let the text wrap within * that, and copy a slice of the result to the dialog. * * It works for ncurses. Other curses implementations show only blanks (Tru64) * or garbage (NetBSD). */ static int show_message(WINDOW *dialog, const char *prompt, int offset, int page, int width, int pauseopt) { #ifdef NCURSES_VERSION if (pauseopt) { int wide = width - (2 * MARGIN); int high = LINES; int y, x; int len; int percent; WINDOW *dummy; char buffer[5]; #if defined(NCURSES_VERSION_PATCH) && NCURSES_VERSION_PATCH >= 20040417 /* * If we're not limited by the screensize, allow text to possibly be * one character per line. */ if ((len = strlen(prompt)) > high) high = len; #endif dummy = newwin(high, width, 0, 0); wbkgdset(dummy, dialog_attr | ' '); wattrset(dummy, dialog_attr); werase(dummy); dlg_print_autowrap(dummy, prompt, high, wide); getyx(dummy, y, x); copywin(dummy, /* srcwin */ dialog, /* dstwin */ offset + MARGIN, /* sminrow */ MARGIN, /* smincol */ MARGIN, /* dminrow */ MARGIN, /* dmincol */ page, /* dmaxrow */ wide, /* dmaxcol */ FALSE); delwin(dummy); /* if the text is incomplete, or we have scrolled, show the percentage */ if (y > 0 && wide > 4) { percent = ((page + offset) * 100.0 / y); if (percent < 0) percent = 0; if (percent > 100) percent = 100; if (offset != 0 || percent != 100) { (void) wattrset(dialog, position_indicator_attr); (void) wmove(dialog, MARGIN + page, wide - 4); (void) sprintf(buffer, "%d%%", percent); (void) waddstr(dialog, buffer); if ((len = strlen(buffer)) < 4) { wattrset(dialog, border_attr); whline(dialog, ACS_HLINE, 4 - len); } } } return (y - page); } #endif (void) offset; wattrset(dialog, dialog_attr); dlg_print_autowrap(dialog, prompt, page + 1 + (3 * MARGIN), width); return 0; } /* * Display a message box. Program will pause and display an "OK" button * if the parameter 'pauseopt' is non-zero. */ int dialog_msgbox(const char *title, const char *cprompt, int height, int width, int pauseopt) { int x, y, last = 0, page; int key = 0, fkey; WINDOW *dialog = 0; char *prompt = dlg_strclone(cprompt); const char **buttons = dlg_ok_label(); int offset = 0; bool show = TRUE; #ifdef KEY_RESIZE int req_high = height; int req_wide = width; restart: #endif dlg_tab_correct_str(prompt); dlg_auto_size(title, prompt, &height, &width, (pauseopt == 1 ? 2 : 0), (pauseopt == 1 ? 12 : 0)); dlg_print_size(height, width); dlg_ctl_size(height, width); x = dlg_box_x_ordinate(width); y = dlg_box_y_ordinate(height); #ifdef KEY_RESIZE if (dialog != 0) { (void) wresize(dialog, height, width); (void) mvwin(dialog, y, x); (void) refresh(); } else #endif dialog = dlg_new_window(height, width, y, x); page = height - (1 + 3 * MARGIN); dlg_mouse_setbase(x, y); dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); dlg_draw_title(dialog, title); wattrset(dialog, dialog_attr); if (pauseopt) { bool done = FALSE; dlg_draw_bottom_box(dialog); mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n'); dlg_draw_buttons(dialog, height - 2, 0, buttons, FALSE, FALSE, width); while (!done) { if (show) { getyx(dialog, y, x); last = show_message(dialog, prompt, offset, page, width, pauseopt); wmove(dialog, y, x); wrefresh(dialog); show = FALSE; } key = dlg_mouse_wgetch(dialog, &fkey); if (!fkey) { fkey = TRUE; switch (key) { case ESC: done = TRUE; continue; case ' ': case '\n': case '\r': key = KEY_ENTER; break; case 'F': case 'f': key = KEY_NPAGE; break; case 'B': case 'b': key = KEY_PPAGE; break; case 'g': key = KEY_HOME; break; case 'G': key = KEY_END; break; case 'K': case 'k': key = KEY_UP; break; case 'J': case 'j': key = KEY_DOWN; break; default: if (dlg_char_to_button(key, buttons) == 0) { key = KEY_ENTER; } else { fkey = FALSE; } break; } } if (fkey) { switch (key) { #ifdef KEY_RESIZE case KEY_RESIZE: dlg_clear(); height = req_high; width = req_wide; goto restart; #endif case KEY_ENTER: done = TRUE; break; case KEY_HOME: if (offset > 0) { offset = 0; show = TRUE; } break; case KEY_END: if (offset < last) { offset = last; show = TRUE; } break; case KEY_UP: if (offset > 0) { --offset; show = TRUE; } break; case KEY_DOWN: if (offset < last) { ++offset; show = TRUE; } break; case KEY_PPAGE: if (offset > 0) { offset -= page; if (offset < 0) offset = 0; show = TRUE; } break; case KEY_NPAGE: if (offset < last) { offset += page; if (offset > last) offset = last; show = TRUE; } break; default: if (key >= M_EVENT) done = TRUE; else beep(); break; } } else { beep(); } } } else { show_message(dialog, prompt, offset, page, width, pauseopt); key = '\n'; wrefresh(dialog); } dlg_del_window(dialog); dlg_mouse_free_regions(); free(prompt); return (key == ESC) ? DLG_EXIT_ESC : DLG_EXIT_OK; }