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authornwhitehorn <nwhitehorn@FreeBSD.org>2011-01-12 14:55:02 +0000
committernwhitehorn <nwhitehorn@FreeBSD.org>2011-01-12 14:55:02 +0000
commit3d4e8889889e5e36302454225999f7e146d3219c (patch)
treefa315b999f531039df54ab7af8e99f7e8daad77c /gnu/lib/libodialog/msgbox.c
parentb905920a72950a63c9782b4911d252bfac08db6e (diff)
downloadFreeBSD-src-3d4e8889889e5e36302454225999f7e146d3219c.zip
FreeBSD-src-3d4e8889889e5e36302454225999f7e146d3219c.tar.gz
Update dialog to version 20100428. This changes the license under which
dialog is distributed from GPLv2 to LGPLv2 and introduces a number of new features and a new and better libdialog API. The existing libdialog will be kept temporarily as libodialog for compatibility purposes until sade, sysinstall and tzsetup have been either updated or replaced. __FreeBSD_version is now 900030. Discussed on: -current Approved by: core Obtained from: http://invisible-island.net/dialog
Diffstat (limited to 'gnu/lib/libodialog/msgbox.c')
-rw-r--r--gnu/lib/libodialog/msgbox.c346
1 files changed, 346 insertions, 0 deletions
diff --git a/gnu/lib/libodialog/msgbox.c b/gnu/lib/libodialog/msgbox.c
new file mode 100644
index 0000000..41d78c8
--- /dev/null
+++ b/gnu/lib/libodialog/msgbox.c
@@ -0,0 +1,346 @@
+/*
+ * msgbox.c -- implements the message box and info box
+ *
+ * AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *
+ * 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <dialog.h>
+#include "dialog.priv.h"
+
+
+/* local prototypes */
+static int getnlines(unsigned char *buf);
+static void print_page(WINDOW *win, int height, int width, unsigned char *buf, int startline, int hscroll);
+static void print_perc(WINDOW *win, int y, int x, float p);
+
+
+/*
+ * Display a message box. Program will pause and display an "OK" button
+ * if the parameter 'pause' is non-zero.
+ */
+int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int width, int pause)
+{
+ int i, j, x, y, key = 0;
+ WINDOW *dialog;
+
+ if (height < 0)
+ height = strheight(prompt)+2+2*(!!pause);
+ if (width < 0) {
+ i = strwidth(prompt);
+ j = ((title != NULL) ? strwidth(title) : 0);
+ width = MAX(i,j)+4;
+ }
+ if (pause)
+ width = MAX(width,10);
+
+ if (width > COLS)
+ width = COLS;
+ if (height > LINES)
+ height = LINES;
+ /* center dialog box on screen */
+ x = DialogX ? DialogX : (COLS - width)/2;
+ y = DialogY ? DialogY : (LINES - height)/2;
+
+#ifdef HAVE_NCURSES
+ if (use_shadow)
+ draw_shadow(stdscr, y, x, height, width);
+#endif
+ dialog = newwin(height, width, y, x);
+ if (dialog == NULL) {
+ endwin();
+ fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
+ exit(1);
+ }
+ keypad(dialog, TRUE);
+
+ draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+
+ if (title != NULL) {
+ wattrset(dialog, title_attr);
+ wmove(dialog, 0, (width - strlen(title))/2 - 1);
+ waddch(dialog, ' ');
+ waddstr(dialog, title);
+ waddch(dialog, ' ');
+ }
+ wattrset(dialog, dialog_attr);
+ wmove(dialog, 1, 2);
+ print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE);
+
+ if (pause) {
+ wattrset(dialog, border_attr);
+ wmove(dialog, height-3, 0);
+ waddch(dialog, ACS_LTEE);
+ for (i = 0; i < width-2; i++)
+ waddch(dialog, ACS_HLINE);
+ wattrset(dialog, dialog_attr);
+ waddch(dialog, ACS_RTEE);
+ wmove(dialog, height-2, 1);
+ for (i = 0; i < width-2; i++)
+ waddch(dialog, ' ');
+ display_helpline(dialog, height-1, width);
+ print_button(dialog, " OK ", height-2, width/2-6, TRUE);
+ wrefresh(dialog);
+ while (key != ESC && key != '\n' && key != ' ' && key != '\r')
+ key = wgetch(dialog);
+ if (key == '\r')
+ key = '\n';
+ }
+ else {
+ key = '\n';
+ wrefresh(dialog);
+ }
+
+ delwin(dialog);
+ return (key == ESC ? -1 : 0);
+}
+/* End of dialog_msgbox() */
+
+int
+dialog_mesgbox(unsigned char *title, unsigned char *prompt, int height, int width)
+/*
+ * Desc: basically the same as dialog_msgbox, but ... can use PGUP, PGDN and
+ * arrowkeys to move around the text and pause is always enabled
+ */
+{
+ int i, j, x, y, key=0;
+ int theight, startline, hscroll, max_lines;
+ WINDOW *dialog;
+
+ if (height < 0)
+ height = strheight(prompt)+2+2;
+ if (width < 0) {
+ i = strwidth(prompt);
+ j = ((title != NULL) ? strwidth(title) : 0);
+ width = MAX(i,j)+4;
+ }
+ width = MAX(width,10);
+
+ if (width > COLS)
+ width = COLS;
+ if (height > LINES)
+ height = LINES;
+ /* center dialog box on screen */
+ x = (COLS - width)/2;
+ y = (LINES - height)/2;
+
+#ifdef HAVE_NCURSES
+ if (use_shadow)
+ draw_shadow(stdscr, y, x, height, width);
+#endif
+ dialog = newwin(height, width, y, x);
+ if (dialog == NULL) {
+ endwin();
+ fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
+ exit(1);
+ }
+ keypad(dialog, TRUE);
+
+ draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+
+ if (title != NULL) {
+ wattrset(dialog, title_attr);
+ wmove(dialog, 0, (width - strlen(title))/2 - 1);
+ waddch(dialog, ' ');
+ waddstr(dialog, title);
+ waddch(dialog, ' ');
+ }
+
+ wattrset(dialog, border_attr);
+ wmove(dialog, height-3, 0);
+ waddch(dialog, ACS_LTEE);
+ for (i = 0; i < width-2; i++)
+ waddch(dialog, ACS_HLINE);
+ wattrset(dialog, dialog_attr);
+ waddch(dialog, ACS_RTEE);
+ wmove(dialog, height-2, 1);
+ for (i = 0; i < width-2; i++)
+ waddch(dialog, ' ');
+ display_helpline(dialog, height-1, width);
+ print_button(dialog, " OK ", height-2, width/2-6, TRUE);
+ wattrset(dialog, dialog_attr);
+
+ theight = height - 4;
+ startline = 0;
+ hscroll = 0;
+ max_lines = getnlines(prompt);
+ print_page(dialog, theight, width, prompt, startline, hscroll);
+ print_perc(dialog, height-3, width-9, (float) (startline+theight)/max_lines);
+ wmove(dialog, height-2, width/2-3);
+ wrefresh(dialog);
+ while ((key != ESC) && (key != '\n') && (key != '\r') && (key != ' ')) {
+ key = wgetch(dialog);
+ switch(key) {
+ case KEY_HOME:
+ startline=0;
+ hscroll=0;
+ break;
+ case KEY_END:
+ startline = max_lines - theight;
+ if (startline < 0) startline = 0;
+ break;
+ case '\020': /* ^P */
+ case KEY_UP:
+ if (startline > 0) startline--;
+ break;
+ case '\016': /* ^N */
+ case KEY_DOWN:
+ if (startline < max_lines - theight) startline++;
+ break;
+ case KEY_RIGHT:
+ hscroll+=5;
+ break;
+ case KEY_LEFT:
+ if (hscroll > 0) hscroll-=5;
+ if (hscroll < 0) hscroll =0;
+ break;
+ case KEY_PPAGE:
+ if (startline - height > 0) {
+ startline -= theight;
+ } else {
+ startline = 0;
+ }
+ break;
+ case KEY_NPAGE:
+ if (startline + theight < max_lines - theight) {
+ startline += theight;
+ } else {
+ startline = max_lines - theight;
+ if (startline < 0) startline = 0;
+ }
+ break;
+ case KEY_F(1):
+ case '?':
+ display_helpfile();
+ break;
+ }
+ print_page(dialog, theight, width, prompt, startline, hscroll);
+ print_perc(dialog, height-3, width-9, (float) (startline+theight)/max_lines);
+ wmove(dialog, height-2, width/2-3);
+ wrefresh(dialog);
+ }
+
+ delwin(dialog);
+ return (key == ESC ? -1 : 0);
+
+} /* dialog_mesgbox() */
+
+static void
+print_perc(WINDOW *win, int y, int x, float p)
+/*
+ * Desc: print p as a percentage at the coordinates (y,x)
+ */
+{
+ char ps[10];
+
+ if (p>1.0) p=1.0;
+ sprintf(ps, "(%3d%%)", (int) (p*100));
+ wmove(win, y, x);
+ waddstr(win, ps);
+
+ return;
+} /* print_perc() */
+
+static int
+getnlines(unsigned char *buf)
+/*
+ * Desc: count the # of lines in <buf>
+ */
+{
+ int i = 0;
+
+ if (*buf)
+ i++;
+ while (*buf) {
+ if (*buf == '\n' || *buf == '\r')
+ i++;
+ buf++;
+ }
+ return(i);
+} /* getlines() */
+
+
+unsigned char *
+getline(unsigned char *buf, int n)
+/*
+ * Desc: return a pointer to the n'th line in <buf> or NULL if its
+ * not there
+ */
+{
+ int i;
+
+ if (n<0) {
+ return(NULL);
+ }
+
+ i=0;
+ while (*buf && i<n) {
+ if (*buf == '\n' || *buf == '\r') {
+ i++;
+ }
+ buf++;
+ }
+ if (i<n) {
+ return(NULL);
+ } else {
+ return(buf);
+ }
+} /* getline() */
+
+static void
+print_page(WINDOW *win, int height, int width, unsigned char *buf, int startline, int hscroll)
+/*
+ * Desc: Print a page of text in the current window, starting at line <startline>
+ * with a <horizontal> scroll of hscroll from buffer <buf>
+ */
+{
+ int i, j;
+ unsigned char *b;
+
+ b = getline(buf, startline);
+ for (i=0; i<height; i++) {
+ /* clear line */
+ wmove(win, 1+i, 1);
+ for (j=0; j<width-2; j++) waddnstr(win, " ", 1);
+ wmove(win, 1+i, 1);
+ j = 0;
+ /* scroll to the right */
+ while (*b && (*b != '\n') && (*b != '\r') && (j<hscroll)) {
+ b++;
+ j++;
+ }
+ /* print new line */
+ j = 0;
+ while (*b && (*b != '\n') && (*b != '\r') && (j<width-2)) {
+ waddnstr(win, b, 1);
+ if (*b != '\t') { /* check for tabs */
+ j++;
+ } else {
+ j = ((int) (j+1)/8 + 1) * 8 - 1;
+ }
+ b++;
+ }
+ while (*b && (*b != '\n') && (*b != '\r')) b++;
+ if (*b) b++; /* skip over '\n', if it exists */
+ }
+} /* print_page() */
+
+
+
+
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