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kconfig/lxdialog: refactor color support
[linux-2.6.22.y-op.git] / scripts / kconfig / lxdialog / util.c
blob08f98b1c4bb3b826b19efc74625a238b9ca5c821
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 struct dialog_info dlg;
25
26 static void set_mono_theme(void)
27 {
28 dlg.screen.atr = A_NORMAL;
29 dlg.shadow.atr = A_NORMAL;
30 dlg.dialog.atr = A_NORMAL;
31 dlg.title.atr = A_BOLD;
32 dlg.border.atr = A_NORMAL;
33 dlg.button_active.atr = A_REVERSE;
34 dlg.button_inactive.atr = A_DIM;
35 dlg.button_key_active.atr = A_REVERSE;
36 dlg.button_key_inactive.atr = A_BOLD;
37 dlg.button_label_active.atr = A_REVERSE;
38 dlg.button_label_inactive.atr = A_NORMAL;
39 dlg.inputbox.atr = A_NORMAL;
40 dlg.inputbox_border.atr = A_NORMAL;
41 dlg.searchbox.atr = A_NORMAL;
42 dlg.searchbox_title.atr = A_BOLD;
43 dlg.searchbox_border.atr = A_NORMAL;
44 dlg.position_indicator.atr = A_BOLD;
45 dlg.menubox.atr = A_NORMAL;
46 dlg.menubox_border.atr = A_NORMAL;
47 dlg.item.atr = A_NORMAL;
48 dlg.item_selected.atr = A_REVERSE;
49 dlg.tag.atr = A_BOLD;
50 dlg.tag_selected.atr = A_REVERSE;
51 dlg.tag_key.atr = A_BOLD;
52 dlg.tag_key_selected.atr = A_REVERSE;
53 dlg.check.atr = A_BOLD;
54 dlg.check_selected.atr = A_REVERSE;
55 dlg.uarrow.atr = A_BOLD;
56 dlg.darrow.atr = A_BOLD;
57 }
58
59 #define DLG_COLOR(dialog, f, b, h) \
60 do { \
61 dlg.dialog.fg = (f); \
62 dlg.dialog.bg = (b); \
63 dlg.dialog.hl = (h); \
64 } while (0)
65
66 static void set_classic_theme(void)
67 {
68 DLG_COLOR(screen, COLOR_CYAN, COLOR_BLUE, true);
69 DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, true);
70 DLG_COLOR(dialog, COLOR_BLACK, COLOR_WHITE, false);
71 DLG_COLOR(title, COLOR_YELLOW, COLOR_WHITE, true);
72 DLG_COLOR(border, COLOR_WHITE, COLOR_WHITE, true);
73 DLG_COLOR(button_active, COLOR_WHITE, COLOR_BLUE, true);
74 DLG_COLOR(button_inactive, COLOR_BLACK, COLOR_WHITE, false);
75 DLG_COLOR(button_key_active, COLOR_WHITE, COLOR_BLUE, true);
76 DLG_COLOR(button_key_inactive, COLOR_RED, COLOR_WHITE, false);
77 DLG_COLOR(button_label_active, COLOR_YELLOW, COLOR_BLUE, true);
78 DLG_COLOR(button_label_inactive, COLOR_BLACK, COLOR_WHITE, true);
79 DLG_COLOR(inputbox, COLOR_BLACK, COLOR_WHITE, false);
80 DLG_COLOR(inputbox_border, COLOR_BLACK, COLOR_WHITE, false);
81 DLG_COLOR(searchbox, COLOR_BLACK, COLOR_WHITE, false);
82 DLG_COLOR(searchbox_title, COLOR_YELLOW, COLOR_WHITE, true);
83 DLG_COLOR(searchbox_border, COLOR_WHITE, COLOR_WHITE, true);
84 DLG_COLOR(position_indicator, COLOR_YELLOW, COLOR_WHITE, true);
85 DLG_COLOR(menubox, COLOR_BLACK, COLOR_WHITE, false);
86 DLG_COLOR(menubox_border, COLOR_WHITE, COLOR_WHITE, true);
87 DLG_COLOR(item, COLOR_BLACK, COLOR_WHITE, false);
88 DLG_COLOR(item_selected, COLOR_WHITE, COLOR_BLUE, true);
89 DLG_COLOR(tag, COLOR_YELLOW, COLOR_WHITE, true);
90 DLG_COLOR(tag_selected, COLOR_YELLOW, COLOR_BLUE, true);
91 DLG_COLOR(tag_key, COLOR_YELLOW, COLOR_WHITE, true);
92 DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_BLUE, true);
93 DLG_COLOR(check, COLOR_BLACK, COLOR_WHITE, false);
94 DLG_COLOR(check_selected, COLOR_WHITE, COLOR_BLUE, true);
95 DLG_COLOR(uarrow, COLOR_GREEN, COLOR_WHITE, true);
96 DLG_COLOR(darrow, COLOR_GREEN, COLOR_WHITE, true);
97 }
98
99 static void init_one_color(struct dialog_color *color)
100 {
101 static int pair = 0;
102
103 pair++;
104 init_pair(pair, color->fg, color->bg);
105 if (color->hl)
106 color->atr = A_BOLD | COLOR_PAIR(pair);
107 else
108 color->atr = COLOR_PAIR(pair);
109 }
110
111 static void init_dialog_colors(void)
112 {
113 init_one_color(&dlg.screen);
114 init_one_color(&dlg.shadow);
115 init_one_color(&dlg.dialog);
116 init_one_color(&dlg.title);
117 init_one_color(&dlg.border);
118 init_one_color(&dlg.button_active);
119 init_one_color(&dlg.button_inactive);
120 init_one_color(&dlg.button_key_active);
121 init_one_color(&dlg.button_key_inactive);
122 init_one_color(&dlg.button_label_active);
123 init_one_color(&dlg.button_label_inactive);
124 init_one_color(&dlg.inputbox);
125 init_one_color(&dlg.inputbox_border);
126 init_one_color(&dlg.searchbox);
127 init_one_color(&dlg.searchbox_title);
128 init_one_color(&dlg.searchbox_border);
129 init_one_color(&dlg.position_indicator);
130 init_one_color(&dlg.menubox);
131 init_one_color(&dlg.menubox_border);
132 init_one_color(&dlg.item);
133 init_one_color(&dlg.item_selected);
134 init_one_color(&dlg.tag);
135 init_one_color(&dlg.tag_selected);
136 init_one_color(&dlg.tag_key);
137 init_one_color(&dlg.tag_key_selected);
138 init_one_color(&dlg.check);
139 init_one_color(&dlg.check_selected);
140 init_one_color(&dlg.uarrow);
141 init_one_color(&dlg.darrow);
142 }
143
144 /*
145 * Setup for color display
146 */
147 static void color_setup(void)
148 {
149 if (has_colors()) { /* Terminal supports color? */
150 start_color();
151 set_classic_theme();
152 init_dialog_colors();
153 }
154 else
155 {
156 set_mono_theme();
157 }
158 }
159
160 /*
161 * Set window to attribute 'attr'
162 */
163 void attr_clear(WINDOW * win, int height, int width, chtype attr)
164 {
165 int i, j;
166
167 wattrset(win, attr);
168 for (i = 0; i < height; i++) {
169 wmove(win, i, 0);
170 for (j = 0; j < width; j++)
171 waddch(win, ' ');
172 }
173 touchwin(win);
174 }
175
176 void dialog_clear(void)
177 {
178 attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
179 /* Display background title if it exists ... - SLH */
180 if (dlg.backtitle != NULL) {
181 int i;
182
183 wattrset(stdscr, dlg.screen.atr);
184 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
185 wmove(stdscr, 1, 1);
186 for (i = 1; i < COLS - 1; i++)
187 waddch(stdscr, ACS_HLINE);
188 }
189 wnoutrefresh(stdscr);
190 }
191
192 /*
193 * Do some initialization for dialog
194 */
195 void init_dialog(void)
196 {
197 initscr(); /* Init curses */
198 keypad(stdscr, TRUE);
199 cbreak();
200 noecho();
201 color_setup();
202 dialog_clear();
203 }
204
205 /*
206 * End using dialog functions.
207 */
208 void end_dialog(void)
209 {
210 endwin();
211 }
212
213 /* Print the title of the dialog. Center the title and truncate
214 * tile if wider than dialog (- 2 chars).
215 **/
216 void print_title(WINDOW *dialog, const char *title, int width)
217 {
218 if (title) {
219 int tlen = MIN(width - 2, strlen(title));
220 wattrset(dialog, dlg.title.atr);
221 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
222 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
223 waddch(dialog, ' ');
224 }
225 }
226
227 /*
228 * Print a string of text in a window, automatically wrap around to the
229 * next line if the string is too long to fit on one line. Newline
230 * characters '\n' are replaced by spaces. We start on a new line
231 * if there is no room for at least 4 nonblanks following a double-space.
232 */
233 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
234 {
235 int newl, cur_x, cur_y;
236 int i, prompt_len, room, wlen;
237 char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
238
239 strcpy(tempstr, prompt);
240
241 prompt_len = strlen(tempstr);
242
243 /*
244 * Remove newlines
245 */
246 for (i = 0; i < prompt_len; i++) {
247 if (tempstr[i] == '\n')
248 tempstr[i] = ' ';
249 }
250
251 if (prompt_len <= width - x * 2) { /* If prompt is short */
252 wmove(win, y, (width - prompt_len) / 2);
253 waddstr(win, tempstr);
254 } else {
255 cur_x = x;
256 cur_y = y;
257 newl = 1;
258 word = tempstr;
259 while (word && *word) {
260 sp = index(word, ' ');
261 if (sp)
262 *sp++ = 0;
263
264 /* Wrap to next line if either the word does not fit,
265 or it is the first word of a new sentence, and it is
266 short, and the next word does not fit. */
267 room = width - cur_x;
268 wlen = strlen(word);
269 if (wlen > room ||
270 (newl && wlen < 4 && sp
271 && wlen + 1 + strlen(sp) > room
272 && (!(sp2 = index(sp, ' '))
273 || wlen + 1 + (sp2 - sp) > room))) {
274 cur_y++;
275 cur_x = x;
276 }
277 wmove(win, cur_y, cur_x);
278 waddstr(win, word);
279 getyx(win, cur_y, cur_x);
280 cur_x++;
281 if (sp && *sp == ' ') {
282 cur_x++; /* double space */
283 while (*++sp == ' ') ;
284 newl = 1;
285 } else
286 newl = 0;
287 word = sp;
288 }
289 }
290 }
291
292 /*
293 * Print a button
294 */
295 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
296 {
297 int i, temp;
298
299 wmove(win, y, x);
300 wattrset(win, selected ? dlg.button_active.atr
301 : dlg.button_inactive.atr);
302 waddstr(win, "<");
303 temp = strspn(label, " ");
304 label += temp;
305 wattrset(win, selected ? dlg.button_label_active.atr
306 : dlg.button_label_inactive.atr);
307 for (i = 0; i < temp; i++)
308 waddch(win, ' ');
309 wattrset(win, selected ? dlg.button_key_active.atr
310 : dlg.button_key_inactive.atr);
311 waddch(win, label[0]);
312 wattrset(win, selected ? dlg.button_label_active.atr
313 : dlg.button_label_inactive.atr);
314 waddstr(win, (char *)label + 1);
315 wattrset(win, selected ? dlg.button_active.atr
316 : dlg.button_inactive.atr);
317 waddstr(win, ">");
318 wmove(win, y, x + temp + 1);
319 }
320
321 /*
322 * Draw a rectangular box with line drawing characters
323 */
324 void
325 draw_box(WINDOW * win, int y, int x, int height, int width,
326 chtype box, chtype border)
327 {
328 int i, j;
329
330 wattrset(win, 0);
331 for (i = 0; i < height; i++) {
332 wmove(win, y + i, x);
333 for (j = 0; j < width; j++)
334 if (!i && !j)
335 waddch(win, border | ACS_ULCORNER);
336 else if (i == height - 1 && !j)
337 waddch(win, border | ACS_LLCORNER);
338 else if (!i && j == width - 1)
339 waddch(win, box | ACS_URCORNER);
340 else if (i == height - 1 && j == width - 1)
341 waddch(win, box | ACS_LRCORNER);
342 else if (!i)
343 waddch(win, border | ACS_HLINE);
344 else if (i == height - 1)
345 waddch(win, box | ACS_HLINE);
346 else if (!j)
347 waddch(win, border | ACS_VLINE);
348 else if (j == width - 1)
349 waddch(win, box | ACS_VLINE);
350 else
351 waddch(win, box | ' ');
352 }
353 }
354
355 /*
356 * Draw shadows along the right and bottom edge to give a more 3D look
357 * to the boxes
358 */
359 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
360 {
361 int i;
362
363 if (has_colors()) { /* Whether terminal supports color? */
364 wattrset(win, dlg.shadow.atr);
365 wmove(win, y + height, x + 2);
366 for (i = 0; i < width; i++)
367 waddch(win, winch(win) & A_CHARTEXT);
368 for (i = y + 1; i < y + height + 1; i++) {
369 wmove(win, i, x + width);
370 waddch(win, winch(win) & A_CHARTEXT);
371 waddch(win, winch(win) & A_CHARTEXT);
372 }
373 wnoutrefresh(win);
374 }
375 }
376
377 /*
378 * Return the position of the first alphabetic character in a string.
379 */
380 int first_alpha(const char *string, const char *exempt)
381 {
382 int i, in_paren = 0, c;
383
384 for (i = 0; i < strlen(string); i++) {
385 c = tolower(string[i]);
386
387 if (strchr("<[(", c))
388 ++in_paren;
389 if (strchr(">])", c) && in_paren > 0)
390 --in_paren;
391
392 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
393 return i;
394 }
395
396 return 0;
397 }
linux v2.6.22.y-op