(2006-08-06) rescue-bootcd

extra/dialog-1.0-20050306/pause.c

@@ -0,0 +1,125 @@
+/*
+ *  $Id: pause.c,v 1.3 2004/12/20 23:42:34 tom Exp $
+ *
+ *  pause.c -- implements the pause dialog
+ *
+ *  AUTHOR: Yura Kalinichenko
+ *
+ *  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 a gauge, or progress meter.  Starts at percent% and reads stdin.  If
+ * stdin is not XXX, then it is interpreted as a percentage, and the display is
+ * updated accordingly.  Otherwise the next line is the percentage, and
+ * subsequent lines up to another XXX are used for the new prompt.  Note that
+ * the size of the window never changes, so the prompt can not get any larger
+ * than the height and width specified.
+ */
+int
+dialog_pause(const char *title,
+	     const char *prompt,
+	     int height,
+	     int width,
+	     int seconds)
+{
+    int i, x, y;
+    int seconds_orig;
+    WINDOW *dialog;
+    const char **buttons = dlg_exit_label();
+    int key = 0, fkey;
+    int status = DLG_EXIT_OK;
+
+    seconds_orig = (seconds > 0) ? seconds : 1;
+    dlg_auto_size(title, prompt, &height, &width, 0, 0);
+    dlg_print_size(height, width);
+    dlg_ctl_size(height, width);
+
+    /* center dialog box on screen */
+    x = dlg_box_x_ordinate(width);
+    y = dlg_box_y_ordinate(height);
+
+    dialog = dlg_new_window(height, width, y, x);
+    dlg_mouse_setbase(x, y);
+    nodelay(dialog, TRUE);
+
+    curs_set(0);
+    do {
+	(void) werase(dialog);
+	dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+
+	dlg_draw_title(dialog, title);
+
+	wattrset(dialog, dialog_attr);
+	dlg_print_autowrap(dialog, prompt, height, width - (2 * MARGIN));
+
+	dlg_draw_box(dialog,
+		     height - 6, 2 + MARGIN,
+		     2 + MARGIN, width - 2 * (2 + MARGIN),
+		     dialog_attr,
+		     border_attr);
+
+	/*
+	 * Clear the area for the progress bar by filling it with spaces
+	 * in the title-attribute, and write the percentage with that
+	 * attribute.
+	 */
+	(void) wmove(dialog, height - 5, 4);
+	wattrset(dialog, title_attr);
+
+	for (i = 0; i < (width - 2 * (3 + MARGIN)); i++)
+	    (void) waddch(dialog, ' ');
+
+	(void) wmove(dialog, height - 5, (width / 2) - 2);
+	(void) wprintw(dialog, "%3d", seconds);
+
+	/*
+	 * Now draw a bar in reverse, relative to the background.
+	 * The window attribute was useful for painting the background,
+	 * but requires some tweaks to reverse it.
+	 */
+	x = (seconds * (width - 2 * (3 + MARGIN))) / seconds_orig;
+	if ((title_attr & A_REVERSE) != 0) {
+	    wattroff(dialog, A_REVERSE);
+	} else {
+	    wattrset(dialog, A_REVERSE);
+	}
+	(void) wmove(dialog, height - 5, 4);
+	for (i = 0; i < x; i++) {
+	    chtype ch = winch(dialog);
+	    if (title_attr & A_REVERSE) {
+		ch &= ~A_REVERSE;
+	    }
+	    (void) waddch(dialog, ch);
+	}
+
+	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);
+	(void) wrefresh(dialog);
+	napms(1000);
+	key = dlg_mouse_wgetch_nowait(dialog, &fkey);
+	if (key != ERR) {
+	    status = DLG_EXIT_CANCEL;
+	    break;
+	}
+    } while (seconds-- > 0);
+
+    curs_set(1);
+    dlg_del_window(dialog);
+    return (status);
+}