1 | /* |
2 | * util.c |
3 | * |
4 | * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk) |
5 | * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com) |
6 | * |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License |
9 | * as published by the Free Software Foundation; either version 2 |
10 | * of the License, or (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, write to the Free Software |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | */ |
21 | |
22 | #include "dialog.h" |
23 | |
24 | /* use colors by default? */ |
25 | bool use_colors = 1; |
26 | |
27 | const char *backtitle = NULL; |
28 | |
29 | /* |
30 | * Attribute values, default is for mono display |
31 | */ |
32 | chtype attributes[] = { |
33 | A_NORMAL, /* screen_attr */ |
34 | A_NORMAL, /* shadow_attr */ |
35 | A_NORMAL, /* dialog_attr */ |
36 | A_BOLD, /* title_attr */ |
37 | A_NORMAL, /* border_attr */ |
38 | A_REVERSE, /* button_active_attr */ |
39 | A_DIM, /* button_inactive_attr */ |
40 | A_REVERSE, /* button_key_active_attr */ |
41 | A_BOLD, /* button_key_inactive_attr */ |
42 | A_REVERSE, /* button_label_active_attr */ |
43 | A_NORMAL, /* button_label_inactive_attr */ |
44 | A_NORMAL, /* inputbox_attr */ |
45 | A_NORMAL, /* inputbox_border_attr */ |
46 | A_NORMAL, /* searchbox_attr */ |
47 | A_BOLD, /* searchbox_title_attr */ |
48 | A_NORMAL, /* searchbox_border_attr */ |
49 | A_BOLD, /* position_indicator_attr */ |
50 | A_NORMAL, /* menubox_attr */ |
51 | A_NORMAL, /* menubox_border_attr */ |
52 | A_NORMAL, /* item_attr */ |
53 | A_REVERSE, /* item_selected_attr */ |
54 | A_BOLD, /* tag_attr */ |
55 | A_REVERSE, /* tag_selected_attr */ |
56 | A_BOLD, /* tag_key_attr */ |
57 | A_REVERSE, /* tag_key_selected_attr */ |
58 | A_BOLD, /* check_attr */ |
59 | A_REVERSE, /* check_selected_attr */ |
60 | A_BOLD, /* uarrow_attr */ |
61 | A_BOLD /* darrow_attr */ |
62 | }; |
63 | |
64 | #include "colors.h" |
65 | |
66 | /* |
67 | * Table of color values |
68 | */ |
69 | int color_table[][3] = { |
70 | {SCREEN_FG, SCREEN_BG, SCREEN_HL}, |
71 | {SHADOW_FG, SHADOW_BG, SHADOW_HL}, |
72 | {DIALOG_FG, DIALOG_BG, DIALOG_HL}, |
73 | {TITLE_FG, TITLE_BG, TITLE_HL}, |
74 | {BORDER_FG, BORDER_BG, BORDER_HL}, |
75 | {BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL}, |
76 | {BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL}, |
77 | {BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL}, |
78 | {BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, |
79 | BUTTON_KEY_INACTIVE_HL}, |
80 | {BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, |
81 | BUTTON_LABEL_ACTIVE_HL}, |
82 | {BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG, |
83 | BUTTON_LABEL_INACTIVE_HL}, |
84 | {INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL}, |
85 | {INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL}, |
86 | {SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL}, |
87 | {SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL}, |
88 | {SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL}, |
89 | {POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL}, |
90 | {MENUBOX_FG, MENUBOX_BG, MENUBOX_HL}, |
91 | {MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL}, |
92 | {ITEM_FG, ITEM_BG, ITEM_HL}, |
93 | {ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL}, |
94 | {TAG_FG, TAG_BG, TAG_HL}, |
95 | {TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL}, |
96 | {TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL}, |
97 | {TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL}, |
98 | {CHECK_FG, CHECK_BG, CHECK_HL}, |
99 | {CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL}, |
100 | {UARROW_FG, UARROW_BG, UARROW_HL}, |
101 | {DARROW_FG, DARROW_BG, DARROW_HL}, |
102 | }; /* color_table */ |
103 | |
104 | /* |
105 | * Set window to attribute 'attr' |
106 | */ |
107 | void attr_clear(WINDOW * win, int height, int width, chtype attr) |
108 | { |
109 | int i, j; |
110 | |
111 | wattrset(win, attr); |
112 | for (i = 0; i < height; i++) { |
113 | wmove(win, i, 0); |
114 | for (j = 0; j < width; j++) |
115 | waddch(win, ' '); |
116 | } |
117 | touchwin(win); |
118 | } |
119 | |
120 | void dialog_clear(void) |
121 | { |
122 | attr_clear(stdscr, LINES, COLS, screen_attr); |
123 | /* Display background title if it exists ... - SLH */ |
124 | if (backtitle != NULL) { |
125 | int i; |
126 | |
127 | wattrset(stdscr, screen_attr); |
128 | mvwaddstr(stdscr, 0, 1, (char *)backtitle); |
129 | wmove(stdscr, 1, 1); |
130 | for (i = 1; i < COLS - 1; i++) |
131 | waddch(stdscr, ACS_HLINE); |
132 | } |
133 | wnoutrefresh(stdscr); |
134 | } |
135 | |
136 | /* |
137 | * Do some initialization for dialog |
138 | */ |
139 | void init_dialog(void) |
140 | { |
141 | initscr(); /* Init curses */ |
142 | keypad(stdscr, TRUE); |
143 | cbreak(); |
144 | noecho(); |
145 | |
146 | if (use_colors) /* Set up colors */ |
147 | color_setup(); |
148 | |
149 | dialog_clear(); |
150 | } |
151 | |
152 | /* |
153 | * Setup for color display |
154 | */ |
155 | void color_setup(void) |
156 | { |
157 | int i; |
158 | |
159 | if (has_colors()) { /* Terminal supports color? */ |
160 | start_color(); |
161 | |
162 | /* Initialize color pairs */ |
163 | for (i = 0; i < ATTRIBUTE_COUNT; i++) |
164 | init_pair(i + 1, color_table[i][0], color_table[i][1]); |
165 | |
166 | /* Setup color attributes */ |
167 | for (i = 0; i < ATTRIBUTE_COUNT; i++) |
168 | attributes[i] = C_ATTR(color_table[i][2], i + 1); |
169 | } |
170 | } |
171 | |
172 | /* |
173 | * End using dialog functions. |
174 | */ |
175 | void end_dialog(void) |
176 | { |
177 | endwin(); |
178 | } |
179 | |
180 | /* Print the title of the dialog. Center the title and truncate |
181 | * tile if wider than dialog (- 2 chars). |
182 | **/ |
183 | void print_title(WINDOW *dialog, const char *title, int width) |
184 | { |
185 | if (title) { |
186 | int tlen = MIN(width - 2, strlen(title)); |
187 | wattrset(dialog, title_attr); |
188 | mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' '); |
189 | mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen); |
190 | waddch(dialog, ' '); |
191 | } |
192 | } |
193 | |
194 | /* |
195 | * Print a string of text in a window, automatically wrap around to the |
196 | * next line if the string is too long to fit on one line. Newline |
197 | * characters '\n' are replaced by spaces. We start on a new line |
198 | * if there is no room for at least 4 nonblanks following a double-space. |
199 | */ |
200 | void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x) |
201 | { |
202 | int newl, cur_x, cur_y; |
203 | int i, prompt_len, room, wlen; |
204 | char tempstr[MAX_LEN + 1], *word, *sp, *sp2; |
205 | |
206 | strcpy(tempstr, prompt); |
207 | |
208 | prompt_len = strlen(tempstr); |
209 | |
210 | /* |
211 | * Remove newlines |
212 | */ |
213 | for (i = 0; i < prompt_len; i++) { |
214 | if (tempstr[i] == '\n') |
215 | tempstr[i] = ' '; |
216 | } |
217 | |
218 | if (prompt_len <= width - x * 2) { /* If prompt is short */ |
219 | wmove(win, y, (width - prompt_len) / 2); |
220 | waddstr(win, tempstr); |
221 | } else { |
222 | cur_x = x; |
223 | cur_y = y; |
224 | newl = 1; |
225 | word = tempstr; |
226 | while (word && *word) { |
227 | sp = index(word, ' '); |
228 | if (sp) |
229 | *sp++ = 0; |
230 | |
231 | /* Wrap to next line if either the word does not fit, |
232 | or it is the first word of a new sentence, and it is |
233 | short, and the next word does not fit. */ |
234 | room = width - cur_x; |
235 | wlen = strlen(word); |
236 | if (wlen > room || |
237 | (newl && wlen < 4 && sp |
238 | && wlen + 1 + strlen(sp) > room |
239 | && (!(sp2 = index(sp, ' ')) |
240 | || wlen + 1 + (sp2 - sp) > room))) { |
241 | cur_y++; |
242 | cur_x = x; |
243 | } |
244 | wmove(win, cur_y, cur_x); |
245 | waddstr(win, word); |
246 | getyx(win, cur_y, cur_x); |
247 | cur_x++; |
248 | if (sp && *sp == ' ') { |
249 | cur_x++; /* double space */ |
250 | while (*++sp == ' ') ; |
251 | newl = 1; |
252 | } else |
253 | newl = 0; |
254 | word = sp; |
255 | } |
256 | } |
257 | } |
258 | |
259 | /* |
260 | * Print a button |
261 | */ |
262 | void print_button(WINDOW * win, const char *label, int y, int x, int selected) |
263 | { |
264 | int i, temp; |
265 | |
266 | wmove(win, y, x); |
267 | wattrset(win, selected ? button_active_attr : button_inactive_attr); |
268 | waddstr(win, "<"); |
269 | temp = strspn(label, " "); |
270 | label += temp; |
271 | wattrset(win, selected ? button_label_active_attr |
272 | : button_label_inactive_attr); |
273 | for (i = 0; i < temp; i++) |
274 | waddch(win, ' '); |
275 | wattrset(win, selected ? button_key_active_attr |
276 | : button_key_inactive_attr); |
277 | waddch(win, label[0]); |
278 | wattrset(win, selected ? button_label_active_attr |
279 | : button_label_inactive_attr); |
280 | waddstr(win, (char *)label + 1); |
281 | wattrset(win, selected ? button_active_attr : button_inactive_attr); |
282 | waddstr(win, ">"); |
283 | wmove(win, y, x + temp + 1); |
284 | } |
285 | |
286 | /* |
287 | * Draw a rectangular box with line drawing characters |
288 | */ |
289 | void |
290 | draw_box(WINDOW * win, int y, int x, int height, int width, |
291 | chtype box, chtype border) |
292 | { |
293 | int i, j; |
294 | |
295 | wattrset(win, 0); |
296 | for (i = 0; i < height; i++) { |
297 | wmove(win, y + i, x); |
298 | for (j = 0; j < width; j++) |
299 | if (!i && !j) |
300 | waddch(win, border | ACS_ULCORNER); |
301 | else if (i == height - 1 && !j) |
302 | waddch(win, border | ACS_LLCORNER); |
303 | else if (!i && j == width - 1) |
304 | waddch(win, box | ACS_URCORNER); |
305 | else if (i == height - 1 && j == width - 1) |
306 | waddch(win, box | ACS_LRCORNER); |
307 | else if (!i) |
308 | waddch(win, border | ACS_HLINE); |
309 | else if (i == height - 1) |
310 | waddch(win, box | ACS_HLINE); |
311 | else if (!j) |
312 | waddch(win, border | ACS_VLINE); |
313 | else if (j == width - 1) |
314 | waddch(win, box | ACS_VLINE); |
315 | else |
316 | waddch(win, box | ' '); |
317 | } |
318 | } |
319 | |
320 | /* |
321 | * Draw shadows along the right and bottom edge to give a more 3D look |
322 | * to the boxes |
323 | */ |
324 | void draw_shadow(WINDOW * win, int y, int x, int height, int width) |
325 | { |
326 | int i; |
327 | |
328 | if (has_colors()) { /* Whether terminal supports color? */ |
329 | wattrset(win, shadow_attr); |
330 | wmove(win, y + height, x + 2); |
331 | for (i = 0; i < width; i++) |
332 | waddch(win, winch(win) & A_CHARTEXT); |
333 | for (i = y + 1; i < y + height + 1; i++) { |
334 | wmove(win, i, x + width); |
335 | waddch(win, winch(win) & A_CHARTEXT); |
336 | waddch(win, winch(win) & A_CHARTEXT); |
337 | } |
338 | wnoutrefresh(win); |
339 | } |
340 | } |
341 | |
342 | /* |
343 | * Return the position of the first alphabetic character in a string. |
344 | */ |
345 | int first_alpha(const char *string, const char *exempt) |
346 | { |
347 | int i, in_paren = 0, c; |
348 | |
349 | for (i = 0; i < strlen(string); i++) { |
350 | c = tolower(string[i]); |
351 | |
352 | if (strchr("<[(", c)) |
353 | ++in_paren; |
354 | if (strchr(">])", c) && in_paren > 0) |
355 | --in_paren; |
356 | |
357 | if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0) |
358 | return i; |
359 | } |
360 | |
361 | return 0; |
362 | } |
363 | |