Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/scripts/lxdialog/util.c
Parent Directory
|
Revision Log
Revision 630 -
(show annotations)
(download)
Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 9620 byte(s)
Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 9620 byte(s)
Tag kernel26-2.6.12-alx-r9
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 | |
25 | /* use colors by default? */ |
26 | bool use_colors = 1; |
27 | |
28 | const char *backtitle = NULL; |
29 | |
30 | const char *dialog_result; |
31 | |
32 | /* |
33 | * Attribute values, default is for mono display |
34 | */ |
35 | chtype attributes[] = |
36 | { |
37 | A_NORMAL, /* screen_attr */ |
38 | A_NORMAL, /* shadow_attr */ |
39 | A_NORMAL, /* dialog_attr */ |
40 | A_BOLD, /* title_attr */ |
41 | A_NORMAL, /* border_attr */ |
42 | A_REVERSE, /* button_active_attr */ |
43 | A_DIM, /* button_inactive_attr */ |
44 | A_REVERSE, /* button_key_active_attr */ |
45 | A_BOLD, /* button_key_inactive_attr */ |
46 | A_REVERSE, /* button_label_active_attr */ |
47 | A_NORMAL, /* button_label_inactive_attr */ |
48 | A_NORMAL, /* inputbox_attr */ |
49 | A_NORMAL, /* inputbox_border_attr */ |
50 | A_NORMAL, /* searchbox_attr */ |
51 | A_BOLD, /* searchbox_title_attr */ |
52 | A_NORMAL, /* searchbox_border_attr */ |
53 | A_BOLD, /* position_indicator_attr */ |
54 | A_NORMAL, /* menubox_attr */ |
55 | A_NORMAL, /* menubox_border_attr */ |
56 | A_NORMAL, /* item_attr */ |
57 | A_REVERSE, /* item_selected_attr */ |
58 | A_BOLD, /* tag_attr */ |
59 | A_REVERSE, /* tag_selected_attr */ |
60 | A_BOLD, /* tag_key_attr */ |
61 | A_REVERSE, /* tag_key_selected_attr */ |
62 | A_BOLD, /* check_attr */ |
63 | A_REVERSE, /* check_selected_attr */ |
64 | A_BOLD, /* uarrow_attr */ |
65 | A_BOLD /* darrow_attr */ |
66 | }; |
67 | |
68 | |
69 | #include "colors.h" |
70 | |
71 | /* |
72 | * Table of color values |
73 | */ |
74 | int color_table[][3] = |
75 | { |
76 | {SCREEN_FG, SCREEN_BG, SCREEN_HL}, |
77 | {SHADOW_FG, SHADOW_BG, SHADOW_HL}, |
78 | {DIALOG_FG, DIALOG_BG, DIALOG_HL}, |
79 | {TITLE_FG, TITLE_BG, TITLE_HL}, |
80 | {BORDER_FG, BORDER_BG, BORDER_HL}, |
81 | {BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL}, |
82 | {BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL}, |
83 | {BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL}, |
84 | {BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, BUTTON_KEY_INACTIVE_HL}, |
85 | {BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, BUTTON_LABEL_ACTIVE_HL}, |
86 | {BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG, |
87 | BUTTON_LABEL_INACTIVE_HL}, |
88 | {INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL}, |
89 | {INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL}, |
90 | {SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL}, |
91 | {SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL}, |
92 | {SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL}, |
93 | {POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL}, |
94 | {MENUBOX_FG, MENUBOX_BG, MENUBOX_HL}, |
95 | {MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL}, |
96 | {ITEM_FG, ITEM_BG, ITEM_HL}, |
97 | {ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL}, |
98 | {TAG_FG, TAG_BG, TAG_HL}, |
99 | {TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL}, |
100 | {TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL}, |
101 | {TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL}, |
102 | {CHECK_FG, CHECK_BG, CHECK_HL}, |
103 | {CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL}, |
104 | {UARROW_FG, UARROW_BG, UARROW_HL}, |
105 | {DARROW_FG, DARROW_BG, DARROW_HL}, |
106 | }; /* color_table */ |
107 | |
108 | /* |
109 | * Set window to attribute 'attr' |
110 | */ |
111 | void |
112 | attr_clear (WINDOW * win, int height, int width, chtype attr) |
113 | { |
114 | int i, j; |
115 | |
116 | wattrset (win, attr); |
117 | for (i = 0; i < height; i++) { |
118 | wmove (win, i, 0); |
119 | for (j = 0; j < width; j++) |
120 | waddch (win, ' '); |
121 | } |
122 | touchwin (win); |
123 | } |
124 | |
125 | void dialog_clear (void) |
126 | { |
127 | attr_clear (stdscr, LINES, COLS, screen_attr); |
128 | /* Display background title if it exists ... - SLH */ |
129 | if (backtitle != NULL) { |
130 | int i; |
131 | |
132 | wattrset (stdscr, screen_attr); |
133 | mvwaddstr (stdscr, 0, 1, (char *)backtitle); |
134 | wmove (stdscr, 1, 1); |
135 | for (i = 1; i < COLS - 1; i++) |
136 | waddch (stdscr, ACS_HLINE); |
137 | } |
138 | wnoutrefresh (stdscr); |
139 | } |
140 | |
141 | /* |
142 | * Do some initialization for dialog |
143 | */ |
144 | void |
145 | init_dialog (void) |
146 | { |
147 | initscr (); /* Init curses */ |
148 | keypad (stdscr, TRUE); |
149 | cbreak (); |
150 | noecho (); |
151 | |
152 | |
153 | if (use_colors) /* Set up colors */ |
154 | color_setup (); |
155 | |
156 | |
157 | dialog_clear (); |
158 | } |
159 | |
160 | /* |
161 | * Setup for color display |
162 | */ |
163 | void |
164 | color_setup (void) |
165 | { |
166 | int i; |
167 | |
168 | if (has_colors ()) { /* Terminal supports color? */ |
169 | start_color (); |
170 | |
171 | /* Initialize color pairs */ |
172 | for (i = 0; i < ATTRIBUTE_COUNT; i++) |
173 | init_pair (i + 1, color_table[i][0], color_table[i][1]); |
174 | |
175 | /* Setup color attributes */ |
176 | for (i = 0; i < ATTRIBUTE_COUNT; i++) |
177 | attributes[i] = C_ATTR (color_table[i][2], i + 1); |
178 | } |
179 | } |
180 | |
181 | /* |
182 | * End using dialog functions. |
183 | */ |
184 | void |
185 | end_dialog (void) |
186 | { |
187 | endwin (); |
188 | } |
189 | |
190 | |
191 | /* |
192 | * Print a string of text in a window, automatically wrap around to the |
193 | * next line if the string is too long to fit on one line. Newline |
194 | * characters '\n' are replaced by spaces. We start on a new line |
195 | * if there is no room for at least 4 nonblanks following a double-space. |
196 | */ |
197 | void |
198 | print_autowrap (WINDOW * win, const char *prompt, int width, int y, int x) |
199 | { |
200 | int newl, cur_x, cur_y; |
201 | int i, prompt_len, room, wlen; |
202 | char tempstr[MAX_LEN + 1], *word, *sp, *sp2; |
203 | |
204 | strcpy (tempstr, prompt); |
205 | |
206 | prompt_len = strlen(tempstr); |
207 | |
208 | /* |
209 | * Remove newlines |
210 | */ |
211 | for(i=0; i<prompt_len; i++) { |
212 | if(tempstr[i] == '\n') tempstr[i] = ' '; |
213 | } |
214 | |
215 | if (prompt_len <= width - x * 2) { /* If prompt is short */ |
216 | wmove (win, y, (width - prompt_len) / 2); |
217 | waddstr (win, tempstr); |
218 | } else { |
219 | cur_x = x; |
220 | cur_y = y; |
221 | newl = 1; |
222 | word = tempstr; |
223 | while (word && *word) { |
224 | sp = index(word, ' '); |
225 | if (sp) |
226 | *sp++ = 0; |
227 | |
228 | /* Wrap to next line if either the word does not fit, |
229 | or it is the first word of a new sentence, and it is |
230 | short, and the next word does not fit. */ |
231 | room = width - cur_x; |
232 | wlen = strlen(word); |
233 | if (wlen > room || |
234 | (newl && wlen < 4 && sp && wlen+1+strlen(sp) > room |
235 | && (!(sp2 = index(sp, ' ')) || wlen+1+(sp2-sp) > room))) { |
236 | cur_y++; |
237 | cur_x = x; |
238 | } |
239 | wmove (win, cur_y, cur_x); |
240 | waddstr (win, word); |
241 | getyx (win, cur_y, cur_x); |
242 | cur_x++; |
243 | if (sp && *sp == ' ') { |
244 | cur_x++; /* double space */ |
245 | while (*++sp == ' '); |
246 | newl = 1; |
247 | } else |
248 | newl = 0; |
249 | word = sp; |
250 | } |
251 | } |
252 | } |
253 | |
254 | /* |
255 | * Print a button |
256 | */ |
257 | void |
258 | print_button (WINDOW * win, const char *label, int y, int x, int selected) |
259 | { |
260 | int i, temp; |
261 | |
262 | wmove (win, y, x); |
263 | wattrset (win, selected ? button_active_attr : button_inactive_attr); |
264 | waddstr (win, "<"); |
265 | temp = strspn (label, " "); |
266 | label += temp; |
267 | wattrset (win, selected ? button_label_active_attr |
268 | : button_label_inactive_attr); |
269 | for (i = 0; i < temp; i++) |
270 | waddch (win, ' '); |
271 | wattrset (win, selected ? button_key_active_attr |
272 | : button_key_inactive_attr); |
273 | waddch (win, label[0]); |
274 | wattrset (win, selected ? button_label_active_attr |
275 | : button_label_inactive_attr); |
276 | waddstr (win, (char *)label + 1); |
277 | wattrset (win, selected ? button_active_attr : button_inactive_attr); |
278 | waddstr (win, ">"); |
279 | wmove (win, y, x + temp + 1); |
280 | } |
281 | |
282 | /* |
283 | * Draw a rectangular box with line drawing characters |
284 | */ |
285 | void |
286 | draw_box (WINDOW * win, int y, int x, int height, int width, |
287 | chtype box, chtype border) |
288 | { |
289 | int i, j; |
290 | |
291 | wattrset (win, 0); |
292 | for (i = 0; i < height; i++) { |
293 | wmove (win, y + i, x); |
294 | for (j = 0; j < width; j++) |
295 | if (!i && !j) |
296 | waddch (win, border | ACS_ULCORNER); |
297 | else if (i == height - 1 && !j) |
298 | waddch (win, border | ACS_LLCORNER); |
299 | else if (!i && j == width - 1) |
300 | waddch (win, box | ACS_URCORNER); |
301 | else if (i == height - 1 && j == width - 1) |
302 | waddch (win, box | ACS_LRCORNER); |
303 | else if (!i) |
304 | waddch (win, border | ACS_HLINE); |
305 | else if (i == height - 1) |
306 | waddch (win, box | ACS_HLINE); |
307 | else if (!j) |
308 | waddch (win, border | ACS_VLINE); |
309 | else if (j == width - 1) |
310 | waddch (win, box | ACS_VLINE); |
311 | else |
312 | waddch (win, box | ' '); |
313 | } |
314 | } |
315 | |
316 | /* |
317 | * Draw shadows along the right and bottom edge to give a more 3D look |
318 | * to the boxes |
319 | */ |
320 | void |
321 | draw_shadow (WINDOW * win, int y, int x, int height, int width) |
322 | { |
323 | int i; |
324 | |
325 | if (has_colors ()) { /* Whether terminal supports color? */ |
326 | wattrset (win, shadow_attr); |
327 | wmove (win, y + height, x + 2); |
328 | for (i = 0; i < width; i++) |
329 | waddch (win, winch (win) & A_CHARTEXT); |
330 | for (i = y + 1; i < y + height + 1; i++) { |
331 | wmove (win, i, x + width); |
332 | waddch (win, winch (win) & A_CHARTEXT); |
333 | waddch (win, winch (win) & A_CHARTEXT); |
334 | } |
335 | wnoutrefresh (win); |
336 | } |
337 | } |
338 | |
339 | /* |
340 | * Return the position of the first alphabetic character in a string. |
341 | */ |
342 | int |
343 | first_alpha(const char *string, const char *exempt) |
344 | { |
345 | int i, in_paren=0, c; |
346 | |
347 | for (i = 0; i < strlen(string); i++) { |
348 | c = tolower(string[i]); |
349 | |
350 | if (strchr("<[(", c)) ++in_paren; |
351 | if (strchr(">])", c) && in_paren > 0) --in_paren; |
352 | |
353 | if ((! in_paren) && isalpha(c) && |
354 | strchr(exempt, c) == 0) |
355 | return i; |
356 | } |
357 | |
358 | return 0; |
359 | } |