1 /*
2 * $Id: pause.c,v 1.39 2018/06/19 22:57:01 tom Exp $
3 *
4 * pause.c -- implements the pause dialog
5 *
6 * Copyright 2004-2012,2018 Thomas E. Dickey
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License, version 2.1
10 * as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, write to
19 * Free Software Foundation, Inc.
20 * 51 Franklin St., Fifth Floor
21 * Boston, MA 02110, USA.
22 *
23 * This is adapted from source contributed by
24 * Yura Kalinichenko
25 */
26
27 #include <dialog.h>
28 #include <dlg_keys.h>
29
30 #define MY_TIMEOUT 50
31
32 #define MIN_HIGH (4)
33 #define MIN_WIDE (10 + 2 * (2 + MARGIN))
34 #define BTN_HIGH (1 + 2 * MARGIN)
35
36 /*
37 * This is like gauge, but can be interrupted.
38 *
39 * A pause box displays a meter along the bottom of the box. The meter
40 * indicates how many seconds remain until the end of the pause. The pause
41 * exits when timeout is reached (status OK) or the user presses:
42 * OK button (status OK)
43 * CANCEL button (status CANCEL)
44 * Esc key (status ESC)
45 *
46 */
47 int
dialog_pause(const char * title,const char * cprompt,int height,int width,int seconds)48 dialog_pause(const char *title,
49 const char *cprompt,
50 int height,
51 int width,
52 int seconds)
53 {
54 /* *INDENT-OFF* */
55 static DLG_KEYS_BINDING binding[] = {
56 HELPKEY_BINDINGS,
57 ENTERKEY_BINDINGS,
58 TRAVERSE_BINDINGS,
59 END_KEYS_BINDING
60 };
61 /* *INDENT-ON* */
62
63 #ifdef KEY_RESIZE
64 int old_height = height;
65 int old_width = width;
66 #endif
67
68 int i, x, y, step;
69 int button = dlg_default_button();
70 int seconds_orig;
71 WINDOW *dialog;
72 const char **buttons = dlg_ok_labels();
73 bool have_buttons = (dlg_button_count(buttons) != 0);
74 bool first;
75 int key = 0, fkey;
76 int result = DLG_EXIT_UNKNOWN;
77 int button_high = (have_buttons ? BTN_HIGH : MARGIN);
78 int gauge_y;
79 char *prompt;
80 int save_timeout = dialog_vars.timeout_secs;
81
82 DLG_TRACE(("# pause args:\n"));
83 DLG_TRACE2S("title", title);
84 DLG_TRACE2S("message", cprompt);
85 DLG_TRACE2N("height", height);
86 DLG_TRACE2N("width", width);
87 DLG_TRACE2N("seconds", seconds);
88
89 curs_set(0);
90
91 dialog_vars.timeout_secs = 0;
92 seconds_orig = (seconds > 0) ? seconds : 1;
93
94 #ifdef KEY_RESIZE
95 retry:
96 #endif
97
98 prompt = dlg_strclone(cprompt);
99 dlg_tab_correct_str(prompt);
100
101 if (have_buttons) {
102 dlg_auto_size(title, prompt, &height, &width,
103 MIN_HIGH,
104 MIN_WIDE);
105 dlg_button_layout(buttons, &width);
106 } else {
107 dlg_auto_size(title, prompt, &height, &width,
108 MIN_HIGH + MARGIN - BTN_HIGH,
109 MIN_WIDE);
110 }
111 gauge_y = height - button_high - (1 + 2 * MARGIN);
112 dlg_print_size(height, width);
113 dlg_ctl_size(height, width);
114
115 /* center dialog box on screen */
116 x = dlg_box_x_ordinate(width);
117 y = dlg_box_y_ordinate(height);
118
119 dialog = dlg_new_window(height, width, y, x);
120 dlg_register_window(dialog, "pause", binding);
121 dlg_register_buttons(dialog, "pause", buttons);
122
123 dlg_mouse_setbase(x, y);
124 nodelay(dialog, TRUE);
125
126 first = TRUE;
127 do {
128 (void) werase(dialog);
129 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
130
131 dlg_draw_title(dialog, title);
132 dlg_draw_helpline(dialog, FALSE);
133
134 dlg_attrset(dialog, dialog_attr);
135 dlg_print_autowrap(dialog, prompt, height, width);
136
137 dlg_draw_box2(dialog,
138 gauge_y, 2 + MARGIN,
139 2 + MARGIN, width - 2 * (2 + MARGIN),
140 dialog_attr,
141 border_attr,
142 border2_attr);
143
144 /*
145 * Clear the area for the progress bar by filling it with spaces
146 * in the title-attribute, and write the percentage with that
147 * attribute.
148 */
149 (void) wmove(dialog, gauge_y + MARGIN, 4);
150 dlg_attrset(dialog, title_attr);
151
152 for (i = 0; i < (width - 2 * (3 + MARGIN)); i++)
153 (void) waddch(dialog, ' ');
154
155 (void) wmove(dialog, gauge_y + MARGIN, (width / 2) - 2);
156 (void) wprintw(dialog, "%3d", seconds);
157
158 /*
159 * Now draw a bar in reverse, relative to the background.
160 * The window attribute was useful for painting the background,
161 * but requires some tweaks to reverse it.
162 */
163 x = (seconds * (width - 2 * (3 + MARGIN))) / seconds_orig;
164 if ((title_attr & A_REVERSE) != 0) {
165 dlg_attroff(dialog, A_REVERSE);
166 } else {
167 dlg_attrset(dialog, A_REVERSE);
168 }
169 (void) wmove(dialog, gauge_y + MARGIN, 4);
170 for (i = 0; i < x; i++) {
171 chtype ch = winch(dialog);
172 if (title_attr & A_REVERSE) {
173 ch &= ~A_REVERSE;
174 }
175 (void) waddch(dialog, ch);
176 }
177
178 mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n');
179 if (have_buttons) {
180 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
181 dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
182 }
183 if (first) {
184 (void) wrefresh(dialog);
185 dlg_trace_win(dialog);
186 first = FALSE;
187 }
188
189 for (step = 0;
190 (result == DLG_EXIT_UNKNOWN) && (step < 1000);
191 step += MY_TIMEOUT) {
192
193 napms(MY_TIMEOUT);
194 key = dlg_mouse_wgetch_nowait(dialog, &fkey);
195 if (key == ERR) {
196 ; /* ignore errors in nodelay mode */
197 } else {
198 if (dlg_result_key(key, fkey, &result))
199 break;
200 }
201
202 switch (key) {
203 #ifdef KEY_RESIZE
204 case KEY_RESIZE:
205 dlg_will_resize(dialog);
206 dlg_clear(); /* fill the background */
207 dlg_del_window(dialog); /* delete this window */
208 height = old_height;
209 width = old_width;
210 free(prompt);
211 refresh(); /* get it all onto the terminal */
212 goto retry;
213 #endif
214 case DLGK_FIELD_NEXT:
215 button = dlg_next_button(buttons, button);
216 if (button < 0)
217 button = 0;
218 dlg_draw_buttons(dialog,
219 height - 2, 0,
220 buttons, button,
221 FALSE, width);
222 break;
223 case DLGK_FIELD_PREV:
224 button = dlg_prev_button(buttons, button);
225 if (button < 0)
226 button = 0;
227 dlg_draw_buttons(dialog,
228 height - 2, 0,
229 buttons, button,
230 FALSE, width);
231 break;
232 case DLGK_ENTER:
233 result = dlg_enter_buttoncode(button);
234 break;
235 case ERR:
236 break;
237 default:
238 if (is_DLGK_MOUSE(key)) {
239 result = dlg_ok_buttoncode(key - M_EVENT);
240 if (result < 0)
241 result = DLG_EXIT_OK;
242 }
243 break;
244 }
245 }
246 } while ((result == DLG_EXIT_UNKNOWN) && (seconds-- > 0));
247
248 curs_set(1);
249 dlg_mouse_free_regions();
250 dlg_del_window(dialog);
251 free(prompt);
252
253 dialog_vars.timeout_secs = save_timeout;
254
255 return ((result == DLG_EXIT_UNKNOWN) ? DLG_EXIT_OK : result);
256 }
257