1 /*
2 * $Id: progressbox.c,v 1.21 2012/07/03 00:12:52 tom Exp $
3 *
4 * progressbox.c -- implements the progress box
5 *
6 * Copyright 2005 Valery Reznic
7 * Copyright 2006-2011 Thomas E. Dickey
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this program; if not, write to
21 * Free Software Foundation, Inc.
22 * 51 Franklin St., Fifth Floor
23 * Boston, MA 02110, USA.
24 */
25
26 #include <dialog.h>
27 #include <dlg_keys.h>
28
29 #define MIN_HIGH (4)
30 #define MIN_WIDE (10 + 2 * (2 + MARGIN))
31
32 typedef struct {
33 DIALOG_CALLBACK obj;
34 WINDOW *text;
35 char line[MAX_LEN + 1];
36 int is_eof;
37 } MY_OBJ;
38
39 /*
40 * Return current line of text.
41 */
42 static char *
get_line(MY_OBJ * obj)43 get_line(MY_OBJ * obj)
44 {
45 FILE *fp = obj->obj.input;
46 int col = 0;
47 int j, tmpint, ch;
48
49 while (1) {
50 if ((ch = getc(fp)) == EOF) {
51 obj->is_eof = 1;
52 if (col) {
53 break;
54 } else {
55 return NULL;
56 }
57 }
58 if (ch == '\n')
59 break;
60 if (ch == '\r')
61 break;
62 if ((ch == TAB) && (dialog_vars.tab_correct)) {
63 tmpint = dialog_state.tab_len
64 - (col % dialog_state.tab_len);
65 for (j = 0; j < tmpint; j++) {
66 if (col < MAX_LEN)
67 obj->line[col] = ' ';
68 ++col;
69 }
70 } else {
71 obj->line[col] = (char) ch;
72 ++col;
73 }
74 if (col >= MAX_LEN)
75 break;
76 }
77
78 obj->line[col] = '\0';
79
80 return obj->line;
81 }
82
83 /*
84 * Print a new line of text.
85 */
86 static void
print_line(MY_OBJ * obj,WINDOW * win,int row,int width)87 print_line(MY_OBJ * obj, WINDOW *win, int row, int width)
88 {
89 int i, y, x;
90 char *line = obj->line;
91
92 (void) wmove(win, row, 0); /* move cursor to correct line */
93 (void) waddch(win, ' ');
94 #ifdef NCURSES_VERSION
95 (void) waddnstr(win, line, MIN((int) strlen(line), width - 2));
96 #else
97 line[MIN((int) strlen(line), width - 2)] = '\0';
98 waddstr(win, line);
99 #endif
100
101 getyx(win, y, x);
102 (void) y;
103 /* Clear 'residue' of previous line */
104 for (i = 0; i < width - x; i++)
105 (void) waddch(win, ' ');
106 }
107
108 static int
pause_for_ok(WINDOW * dialog,int height,int width)109 pause_for_ok(WINDOW *dialog, int height, int width)
110 {
111 /* *INDENT-OFF* */
112 static DLG_KEYS_BINDING binding[] = {
113 HELPKEY_BINDINGS,
114 ENTERKEY_BINDINGS,
115 TRAVERSE_BINDINGS,
116 END_KEYS_BINDING
117 };
118 /* *INDENT-ON* */
119
120 int button;
121 int key = 0, fkey;
122 int result = DLG_EXIT_UNKNOWN;
123 const char **buttons = dlg_ok_label();
124 int check;
125 int save_nocancel = dialog_vars.nocancel;
126 bool redraw = TRUE;
127
128 dialog_vars.nocancel = TRUE;
129 button = dlg_default_button();
130
131 dlg_register_window(dialog, "progressbox", binding);
132 dlg_register_buttons(dialog, "progressbox", buttons);
133
134 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
135 mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n');
136
137 while (result == DLG_EXIT_UNKNOWN) {
138 if (redraw) {
139 redraw = FALSE;
140 if (button < 0)
141 button = 0;
142 dlg_draw_buttons(dialog,
143 height - 2, 0,
144 buttons, button,
145 FALSE, width);
146 }
147
148 key = dlg_mouse_wgetch(dialog, &fkey);
149 if (dlg_result_key(key, fkey, &result))
150 break;
151
152 if (!fkey && (check = dlg_char_to_button(key, buttons)) >= 0) {
153 result = dlg_ok_buttoncode(check);
154 break;
155 }
156
157 if (fkey) {
158 switch (key) {
159 case DLGK_FIELD_NEXT:
160 button = dlg_next_button(buttons, button);
161 redraw = TRUE;
162 break;
163 case DLGK_FIELD_PREV:
164 button = dlg_prev_button(buttons, button);
165 redraw = TRUE;
166 break;
167 case DLGK_ENTER:
168 result = dlg_ok_buttoncode(button);
169 break;
170 default:
171 if (is_DLGK_MOUSE(key)) {
172 result = dlg_ok_buttoncode(key - M_EVENT);
173 if (result < 0)
174 result = DLG_EXIT_OK;
175 } else {
176 beep();
177 }
178 break;
179 }
180
181 } else {
182 beep();
183 }
184 }
185 dlg_unregister_window(dialog);
186
187 dialog_vars.nocancel = save_nocancel;
188 return result;
189 }
190
191 int
dlg_progressbox(const char * title,const char * cprompt,int height,int width,int pauseopt,FILE * fp)192 dlg_progressbox(const char *title,
193 const char *cprompt,
194 int height,
195 int width,
196 int pauseopt,
197 FILE *fp)
198 {
199 int i;
200 int x, y, thigh;
201 WINDOW *dialog, *text;
202 MY_OBJ *obj;
203 char *prompt = dlg_strclone(cprompt);
204 int result;
205
206 dlg_tab_correct_str(prompt);
207 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE);
208 dlg_print_size(height, width);
209 dlg_ctl_size(height, width);
210
211 x = dlg_box_x_ordinate(width);
212 y = dlg_box_y_ordinate(height);
213 thigh = height - (2 * MARGIN);
214
215 dialog = dlg_new_window(height, width, y, x);
216
217 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
218 dlg_draw_title(dialog, title);
219 dlg_draw_helpline(dialog, FALSE);
220
221 if (*prompt != '\0') {
222 int y2, x2;
223
224 (void) wattrset(dialog, dialog_attr);
225 dlg_print_autowrap(dialog, prompt, height, width);
226 getyx(dialog, y2, x2);
227 (void) x2;
228 ++y2;
229 wmove(dialog, y2, MARGIN);
230 for (i = 0; i < getmaxx(dialog) - 2 * MARGIN; i++)
231 (void) waddch(dialog, dlg_boxchar(ACS_HLINE));
232 y += y2;
233 thigh -= y2;
234 }
235
236 /* Create window for text region, used for scrolling text */
237 text = dlg_sub_window(dialog,
238 thigh,
239 width - (2 * MARGIN),
240 y + MARGIN,
241 x + MARGIN);
242
243 (void) wrefresh(dialog);
244
245 (void) wmove(dialog, thigh, (MARGIN + 1));
246 (void) wnoutrefresh(dialog);
247
248 obj = dlg_calloc(MY_OBJ, 1);
249 assert_ptr(obj, "dlg_progressbox");
250
251 obj->obj.input = fp;
252 obj->obj.win = dialog;
253 obj->text = text;
254
255 dlg_attr_clear(text, thigh, getmaxx(text), dialog_attr);
256 for (i = 0; get_line(obj); i++) {
257 if (i < thigh) {
258 print_line(obj, text, i, width - (2 * MARGIN));
259 } else {
260 scrollok(text, TRUE);
261 scroll(text);
262 scrollok(text, FALSE);
263 print_line(obj, text, thigh - 1, width - (2 * MARGIN));
264 }
265 (void) wrefresh(text);
266 dlg_trace_win(dialog);
267 if (obj->is_eof)
268 break;
269 }
270
271 if (pauseopt) {
272 scrollok(text, TRUE);
273 wscrl(text, 1 + MARGIN);
274 (void) wrefresh(text);
275 result = pause_for_ok(dialog, height, width);
276 } else {
277 wrefresh(dialog);
278 result = DLG_EXIT_OK;
279 }
280
281 dlg_del_window(dialog);
282 free(prompt);
283 free(obj);
284
285 return result;
286 }
287
288 /*
289 * Display text from a stdin in a scrolling window.
290 */
291 int
dialog_progressbox(const char * title,const char * cprompt,int height,int width)292 dialog_progressbox(const char *title, const char *cprompt, int height, int width)
293 {
294 int result;
295 result = dlg_progressbox(title,
296 cprompt,
297 height,
298 width,
299 FALSE,
300 dialog_state.pipe_input);
301 dialog_state.pipe_input = 0;
302 return result;
303 }
304