2 * msgbox.c -- implements the message box and info box
4 * AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
25 #include "dialog.priv.h"
28 /* local prototypes */
29 static int getnlines(unsigned char *buf);
30 static void print_page(WINDOW *win, int height, int width, unsigned char *buf, int startline, int hscroll);
31 static void print_perc(WINDOW *win, int y, int x, float p);
35 * Display a message box. Program will pause and display an "OK" button
36 * if the parameter 'pause' is non-zero.
38 int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int width, int pause)
40 int i, j, x, y, key = 0;
44 height = strheight(prompt)+2+2*(!!pause);
47 j = ((title != NULL) ? strwidth(title) : 0);
51 width = MAX(width,10);
57 /* center dialog box on screen */
58 x = DialogX ? DialogX : (COLS - width)/2;
59 y = DialogY ? DialogY : (LINES - height)/2;
63 draw_shadow(stdscr, y, x, height, width);
65 dialog = newwin(height, width, y, x);
68 fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
73 draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
76 wattrset(dialog, title_attr);
77 wmove(dialog, 0, (width - strlen(title))/2 - 1);
79 waddstr(dialog, title);
82 wattrset(dialog, dialog_attr);
84 print_autowrap(dialog, prompt, height-1, width-2, width, 1, 2, TRUE, FALSE);
87 wattrset(dialog, border_attr);
88 wmove(dialog, height-3, 0);
89 waddch(dialog, ACS_LTEE);
90 for (i = 0; i < width-2; i++)
91 waddch(dialog, ACS_HLINE);
92 wattrset(dialog, dialog_attr);
93 waddch(dialog, ACS_RTEE);
94 wmove(dialog, height-2, 1);
95 for (i = 0; i < width-2; i++)
97 display_helpline(dialog, height-1, width);
98 print_button(dialog, " OK ", height-2, width/2-6, TRUE);
100 while (key != ESC && key != '\n' && key != ' ' && key != '\r')
101 key = wgetch(dialog);
111 return (key == ESC ? -1 : 0);
113 /* End of dialog_msgbox() */
116 dialog_mesgbox(unsigned char *title, unsigned char *prompt, int height, int width)
118 * Desc: basically the same as dialog_msgbox, but ... can use PGUP, PGDN and
119 * arrowkeys to move around the text and pause is always enabled
122 int i, j, x, y, key=0;
123 int theight, startline, hscroll, max_lines;
127 height = strheight(prompt)+2+2;
129 i = strwidth(prompt);
130 j = ((title != NULL) ? strwidth(title) : 0);
133 width = MAX(width,10);
139 /* center dialog box on screen */
140 x = (COLS - width)/2;
141 y = (LINES - height)/2;
145 draw_shadow(stdscr, y, x, height, width);
147 dialog = newwin(height, width, y, x);
148 if (dialog == NULL) {
150 fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
153 keypad(dialog, TRUE);
155 draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
158 wattrset(dialog, title_attr);
159 wmove(dialog, 0, (width - strlen(title))/2 - 1);
161 waddstr(dialog, title);
165 wattrset(dialog, border_attr);
166 wmove(dialog, height-3, 0);
167 waddch(dialog, ACS_LTEE);
168 for (i = 0; i < width-2; i++)
169 waddch(dialog, ACS_HLINE);
170 wattrset(dialog, dialog_attr);
171 waddch(dialog, ACS_RTEE);
172 wmove(dialog, height-2, 1);
173 for (i = 0; i < width-2; i++)
175 display_helpline(dialog, height-1, width);
176 print_button(dialog, " OK ", height-2, width/2-6, TRUE);
177 wattrset(dialog, dialog_attr);
179 theight = height - 4;
182 max_lines = getnlines(prompt);
183 print_page(dialog, theight, width, prompt, startline, hscroll);
184 print_perc(dialog, height-3, width-9, (float) (startline+theight)/max_lines);
185 wmove(dialog, height-2, width/2-3);
187 while ((key != ESC) && (key != '\n') && (key != '\r') && (key != ' ')) {
188 key = wgetch(dialog);
195 startline = max_lines - theight;
196 if (startline < 0) startline = 0;
198 case '\020': /* ^P */
200 if (startline > 0) startline--;
202 case '\016': /* ^N */
204 if (startline < max_lines - theight) startline++;
210 if (hscroll > 0) hscroll-=5;
211 if (hscroll < 0) hscroll =0;
214 if (startline - height > 0) {
215 startline -= theight;
221 if (startline + theight < max_lines - theight) {
222 startline += theight;
224 startline = max_lines - theight;
225 if (startline < 0) startline = 0;
233 print_page(dialog, theight, width, prompt, startline, hscroll);
234 print_perc(dialog, height-3, width-9, (float) (startline+theight)/max_lines);
235 wmove(dialog, height-2, width/2-3);
240 return (key == ESC ? -1 : 0);
242 } /* dialog_mesgbox() */
245 print_perc(WINDOW *win, int y, int x, float p)
247 * Desc: print p as a percentage at the coordinates (y,x)
253 sprintf(ps, "(%3d%%)", (int) (p*100));
261 getnlines(unsigned char *buf)
263 * Desc: count the # of lines in <buf>
271 if (*buf == '\n' || *buf == '\r')
280 getline(unsigned char *buf, int n)
282 * Desc: return a pointer to the n'th line in <buf> or NULL if its
293 while (*buf && i<n) {
294 if (*buf == '\n' || *buf == '\r') {
307 print_page(WINDOW *win, int height, int width, unsigned char *buf, int startline, int hscroll)
309 * Desc: Print a page of text in the current window, starting at line <startline>
310 * with a <horizontal> scroll of hscroll from buffer <buf>
316 b = getline(buf, startline);
317 for (i=0; i<height; i++) {
320 for (j=0; j<width-2; j++) waddnstr(win, " ", 1);
323 /* scroll to the right */
324 while (*b && (*b != '\n') && (*b != '\r') && (j<hscroll)) {
330 while (*b && (*b != '\n') && (*b != '\r') && (j<width-2)) {
332 if (*b != '\t') { /* check for tabs */
335 j = ((int) (j+1)/8 + 1) * 8 - 1;
339 while (*b && (*b != '\n') && (*b != '\r')) b++;
340 if (*b) b++; /* skip over '\n', if it exists */