25'ten fazla konu seçemezsiniz Konular bir harf veya rakamla başlamalı, kısa çizgiler ('-') içerebilir ve en fazla 35 karakter uzunluğunda olabilir.
 
 
 
 
 
 

543 satır
16 KiB

  1. /*
  2. * libcaca Colour ASCII-Art library
  3. * Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org>
  4. * All Rights Reserved
  5. *
  6. * $Id$
  7. *
  8. * This library is free software. It comes without any warranty, to
  9. * the extent permitted by applicable law. You can redistribute it
  10. * and/or modify it under the terms of the Do What The Fuck You Want
  11. * To Public License, Version 2, as published by Sam Hocevar. See
  12. * http://sam.zoy.org/wtfpl/COPYING for more details.
  13. */
  14. /*
  15. * This file contains the libcaca SLang input and output driver
  16. */
  17. #include "config.h"
  18. #include "common.h"
  19. #if defined(USE_SLANG)
  20. #if defined(HAVE_SLANG_SLANG_H)
  21. # include <slang/slang.h>
  22. #else
  23. # include <slang.h>
  24. #endif
  25. #include <stdlib.h>
  26. #include <string.h>
  27. #if defined(HAVE_SIGNAL_H)
  28. # include <signal.h>
  29. #endif
  30. #include "cucul.h"
  31. #include "caca.h"
  32. #include "caca_internals.h"
  33. /*
  34. * Global variables
  35. */
  36. /* Tables generated by tools/optipal.c */
  37. static int const slang_palette[2*16*16] =
  38. {
  39. 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0,
  40. 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 0, 8,
  41. 8, 7, 7, 8, 15, 7, 7, 15, 15, 9, 9, 15, 1, 9, 9, 1,
  42. 7, 9, 9, 7, 8, 1, 1, 8, 0, 1, 15, 10, 10, 15, 2, 10,
  43. 10, 2, 7, 10, 10, 7, 8, 2, 2, 8, 0, 2, 15, 11, 11, 15,
  44. 3, 11, 11, 3, 7, 11, 11, 7, 8, 3, 3, 8, 0, 3, 15, 12,
  45. 12, 15, 4, 12, 12, 4, 7, 12, 12, 7, 8, 4, 4, 8, 0, 4,
  46. 15, 13, 13, 15, 5, 13, 13, 5, 7, 13, 13, 7, 8, 5, 5, 8,
  47. 0, 5, 15, 14, 14, 15, 6, 14, 14, 6, 7, 14, 14, 7, 8, 6,
  48. 6, 8, 0, 6, 4, 6, 6, 4, 12, 14, 14, 12, 6, 2, 2, 6,
  49. 14, 10, 10, 14, 2, 3, 3, 2, 10, 11, 11, 10, 3, 1, 1, 3,
  50. 11, 9, 9, 11, 1, 5, 5, 1, 9, 13, 13, 9, 5, 4, 4, 5,
  51. 13, 12, 12, 13, 4, 14, 6, 12, 12, 6, 14, 4, 6, 10, 2, 14,
  52. 14, 2, 10, 6, 2, 11, 3, 10, 10, 3, 11, 2, 3, 9, 1, 11,
  53. 11, 1, 9, 3, 1, 13, 5, 9, 9, 5, 13, 1, 5, 12, 4, 13,
  54. 13, 4, 12, 5, 0, 7, 0, 15, 15, 8, 8, 15, 15, 1, 7, 1,
  55. 1, 6, 2, 5, 3, 4, 4, 3, 5, 2, 6, 1, 0, 0, 1, 1,
  56. 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 2, 2, 3, 3,
  57. 4, 4, 5, 5, 6, 6, 7, 7, 14, 9, 1, 15, 8, 9, 8, 8,
  58. 9, 9, 1, 7, 0, 9, 9, 8, 6, 9, 13, 10, 2, 15, 8, 10,
  59. 7, 2, 15, 2, 2, 7, 0, 10, 10, 8, 5, 10, 12, 11, 3, 15,
  60. 8, 11, 7, 3, 15, 3, 3, 7, 0, 11, 11, 8, 4, 11, 11, 12,
  61. 4, 15, 8, 12, 7, 4, 15, 4, 4, 7, 0, 12, 12, 8, 3, 12,
  62. 10, 13, 5, 15, 8, 13, 7, 5, 15, 5, 5, 7, 0, 13, 13, 8,
  63. 2, 13, 9, 14, 6, 15, 8, 14, 7, 6, 15, 6, 6, 7, 0, 14,
  64. 14, 8, 1, 14, 5, 6, 2, 4, 13, 14, 10, 12, 4, 2, 3, 6,
  65. 12, 10, 11, 14, 6, 3, 1, 2, 14, 11, 9, 10, 2, 1, 5, 3,
  66. 10, 9, 13, 11, 3, 5, 4, 1, 11, 13, 12, 9, 1, 4, 6, 5,
  67. 9, 12, 14, 13, 5, 14, 2, 12, 13, 6, 10, 4, 4, 10, 3, 14,
  68. 12, 2, 11, 6, 6, 11, 1, 10, 14, 3, 9, 2, 2, 9, 5, 11,
  69. 10, 1, 13, 3, 3, 13, 4, 9, 11, 5, 12, 1, 1, 12, 6, 13,
  70. 9, 4, 14, 5, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15,
  71. };
  72. static int const slang_assoc[16*16] =
  73. {
  74. 134, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
  75. 28, 135, 214, 86, 219, 91, 133, 127, 26, 23, 240, 112, 245, 117, 141, 126,
  76. 37, 211, 142, 83, 206, 132, 78, 160, 35, 237, 32, 109, 232, 140, 104, 161,
  77. 46, 87, 82, 143, 131, 215, 210, 169, 44, 113, 108, 41, 139, 241, 236, 170,
  78. 55, 222, 203, 130, 144, 94, 75, 178, 53, 248, 229, 138, 50, 120, 101, 179,
  79. 64, 90, 129, 218, 95, 145, 223, 187, 62, 116, 137, 244, 121, 59, 249, 188,
  80. 73, 128, 79, 207, 74, 202, 146, 196, 71, 136, 105, 233, 100, 228, 68, 197,
  81. 122, 153, 162, 171, 180, 189, 198, 147, 16, 25, 34, 43, 52, 61, 70, 18,
  82. 15, 27, 36, 45, 54, 63, 72, 17, 151, 155, 164, 173, 182, 191, 200, 124,
  83. 154, 22, 238, 110, 243, 115, 156, 24, 150, 152, 216, 88, 221, 93, 148, 20,
  84. 163, 235, 31, 107, 230, 165, 102, 33, 159, 213, 250, 85, 208, 157, 80, 29,
  85. 172, 111, 106, 40, 174, 239, 234, 42, 168, 89, 84, 251, 166, 217, 212, 38,
  86. 181, 246, 227, 183, 49, 118, 99, 51, 177, 224, 205, 175, 252, 96, 77, 47,
  87. 190, 114, 192, 242, 119, 58, 247, 60, 186, 92, 184, 220, 97, 253, 225, 56,
  88. 199, 201, 103, 231, 98, 226, 67, 69, 195, 193, 81, 209, 76, 204, 254, 65,
  89. 123, 149, 158, 167, 176, 185, 194, 19, 125, 21, 30, 39, 48, 57, 66, 255,
  90. };
  91. /*
  92. * Local functions
  93. */
  94. static void slang_init_palette(void);
  95. static void slang_write_utf32(uint32_t);
  96. #if defined(HAVE_SIGNAL)
  97. static RETSIGTYPE sigwinch_handler(int);
  98. static caca_display_t *sigwinch_d; /* FIXME: we ought to get rid of this */
  99. #endif
  100. #if defined(HAVE_GETENV) && defined(HAVE_PUTENV)
  101. static void slang_check_terminal(void);
  102. #endif
  103. static int slang_init_graphics(caca_display_t *dp)
  104. {
  105. #if defined(HAVE_GETENV) && defined(HAVE_PUTENV)
  106. slang_check_terminal();
  107. #endif
  108. #if defined(HAVE_SIGNAL)
  109. sigwinch_d = dp;
  110. signal(SIGWINCH, sigwinch_handler);
  111. #endif
  112. _caca_set_term_title("caca for S-Lang");
  113. /* Initialise slang library */
  114. SLsig_block_signals();
  115. SLtt_get_terminfo();
  116. if(SLkp_init() == -1)
  117. {
  118. SLsig_unblock_signals();
  119. return -1;
  120. }
  121. SLang_init_tty(-1, 0, 1);
  122. if(SLsmg_init_smg() == -1)
  123. {
  124. SLsig_unblock_signals();
  125. return -1;
  126. }
  127. SLsig_unblock_signals();
  128. SLsmg_cls();
  129. SLtt_set_cursor_visibility(0);
  130. SLkp_define_keysym("\e[M", 1001);
  131. SLtt_set_mouse_mode(1, 0);
  132. SLsmg_refresh();
  133. /* Disable scrolling so that hashmap scrolling optimization code
  134. * does not cause ugly refreshes due to slow terminals */
  135. SLtt_Term_Cannot_Scroll = 1;
  136. slang_init_palette();
  137. #if defined(VMS) || defined(REAL_UNIX_SYSTEM)
  138. /* Disable alt charset support so that we get a chance to have all
  139. * 256 colour pairs */
  140. SLtt_Has_Alt_Charset = 0;
  141. #endif
  142. #ifdef HAVE_SLSMG_UTF8_ENABLE
  143. SLsmg_utf8_enable(1); /* 1 == force, 0 == disable, -1 == autodetect */
  144. SLtt_utf8_enable(1);
  145. #endif
  146. dp->resize.allow = 1;
  147. cucul_set_canvas_size(dp->cv, SLtt_Screen_Cols, SLtt_Screen_Rows);
  148. dp->resize.allow = 0;
  149. return 0;
  150. }
  151. static int slang_end_graphics(caca_display_t *dp)
  152. {
  153. _caca_set_term_title("");
  154. SLtt_set_mouse_mode(0, 0);
  155. SLtt_set_cursor_visibility(1);
  156. SLang_reset_tty();
  157. SLsmg_reset_smg();
  158. return 0;
  159. }
  160. static int slang_set_display_title(caca_display_t *dp, char const *title)
  161. {
  162. _caca_set_term_title(title);
  163. return 0;
  164. }
  165. static unsigned int slang_get_display_width(caca_display_t const *dp)
  166. {
  167. /* Fallback to a 6x10 font */
  168. return cucul_get_canvas_width(dp->cv) * 6;
  169. }
  170. static unsigned int slang_get_display_height(caca_display_t const *dp)
  171. {
  172. /* Fallback to a 6x10 font */
  173. return cucul_get_canvas_height(dp->cv) * 10;
  174. }
  175. static void slang_display(caca_display_t *dp)
  176. {
  177. uint32_t const *cvchars = (uint32_t const *)cucul_get_canvas_chars(dp->cv);
  178. uint32_t const *cvattrs = (uint32_t const *)cucul_get_canvas_attrs(dp->cv);
  179. unsigned int width = cucul_get_canvas_width(dp->cv);
  180. unsigned int height = cucul_get_canvas_height(dp->cv);
  181. int x, y;
  182. for(y = 0; y < (int)height; y++)
  183. {
  184. SLsmg_gotorc(y, 0);
  185. for(x = width; x--; )
  186. {
  187. uint32_t ch = *cvchars++;
  188. #if defined(OPTIMISE_SLANG_PALETTE)
  189. /* If foreground == background, just don't use this colour
  190. * pair, and print a space instead of the real character.
  191. * XXX: disabled, because I can't remember what it was
  192. * here for, and in cases where SLang does not render
  193. * bright backgrounds, it's just fucked up. */
  194. #if 0
  195. uint8_t fgcolor = cucul_attr_to_ansi_fg(*cvattrs);
  196. uint8_t bgcolor = cucul_attr_to_ansi_bg(*cvattrs);
  197. if(fgcolor >= 0x10)
  198. fgcolor = CUCUL_LIGHTGRAY;
  199. if(bgcolor >= 0x10)
  200. bgcolor = CUCUL_BLACK; /* FIXME: handle transparency */
  201. if(fgcolor == bgcolor)
  202. {
  203. if(fgcolor == CUCUL_BLACK)
  204. fgcolor = CUCUL_WHITE;
  205. else if(fgcolor == CUCUL_WHITE
  206. || fgcolor <= CUCUL_LIGHTGRAY)
  207. fgcolor = CUCUL_BLACK;
  208. else
  209. fgcolor = CUCUL_WHITE;
  210. SLsmg_set_color(slang_assoc[fgcolor + 16 * bgcolor]);
  211. SLsmg_write_char(' ');
  212. cvattrs++;
  213. }
  214. else
  215. #endif
  216. {
  217. SLsmg_set_color(slang_assoc[cucul_attr_to_ansi(*cvattrs++)]);
  218. slang_write_utf32(ch);
  219. }
  220. #else
  221. SLsmg_set_color(cucul_attr_to_ansi(*cvattrs++));
  222. slang_write_utf32(ch);
  223. #endif
  224. }
  225. }
  226. SLsmg_gotorc(cucul_get_cursor_y(dp->cv), cucul_get_cursor_x(dp->cv));
  227. SLsmg_refresh();
  228. }
  229. static void slang_handle_resize(caca_display_t *dp)
  230. {
  231. SLtt_get_screen_size();
  232. dp->resize.w = SLtt_Screen_Cols;
  233. dp->resize.h = SLtt_Screen_Rows;
  234. if(dp->resize.w != cucul_get_canvas_width(dp->cv)
  235. || dp->resize.h != cucul_get_canvas_height(dp->cv))
  236. SLsmg_reinit_smg();
  237. }
  238. static int slang_get_event(caca_display_t *dp, caca_privevent_t *ev)
  239. {
  240. int intkey;
  241. if(!SLang_input_pending(0))
  242. {
  243. ev->type = CACA_EVENT_NONE;
  244. return 0;
  245. }
  246. /* We first use SLang_getkey() to see whether Esc was pressed
  247. * alone, then (if it wasn't) we unget the key and use SLkp_getkey()
  248. * instead, so that escape sequences are interpreted. */
  249. intkey = SLang_getkey();
  250. if(intkey != 0x1b /* Esc */ || SLang_input_pending(0))
  251. {
  252. SLang_ungetkey(intkey);
  253. intkey = SLkp_getkey();
  254. }
  255. /* If the key was ASCII, return it immediately */
  256. if(intkey < 0x7f)
  257. {
  258. ev->type = CACA_EVENT_KEY_PRESS;
  259. ev->data.key.ch = intkey;
  260. ev->data.key.utf32 = intkey;
  261. ev->data.key.utf8[0] = intkey;
  262. ev->data.key.utf8[1] = '\0';
  263. return 1;
  264. }
  265. /* If the key was UTF-8, parse the whole sequence */
  266. if(intkey >= 0x80 && intkey < 0x100)
  267. {
  268. int keys[7]; /* Necessary for ungetkey(); */
  269. char utf8[7];
  270. uint32_t utf32;
  271. unsigned int i, bytes = 0;
  272. keys[0] = intkey;
  273. utf8[0] = intkey;
  274. for(i = 1; i < 6; i++)
  275. {
  276. if(!SLang_input_pending(0))
  277. break;
  278. keys[i] = SLang_getkey();
  279. utf8[i] = (unsigned char)keys[i];
  280. }
  281. utf8[i] = '\0';
  282. utf32 = cucul_utf8_to_utf32(utf8, &bytes);
  283. while(i > bytes)
  284. SLang_ungetkey(keys[--i]);
  285. if(bytes)
  286. {
  287. ev->type = CACA_EVENT_KEY_PRESS;
  288. ev->data.key.ch = 0;
  289. ev->data.key.utf32 = utf32;
  290. strcpy(ev->data.key.utf8, utf8);
  291. return 1;
  292. }
  293. }
  294. if(intkey == 0x3e9)
  295. {
  296. int button = (SLang_getkey() - ' ' + 1) & 0xf;
  297. unsigned int x = SLang_getkey() - '!';
  298. unsigned int y = SLang_getkey() - '!';
  299. ev->data.mouse.button = button;
  300. ev->type = CACA_EVENT_MOUSE_PRESS;
  301. _push_event(dp, ev);
  302. ev->type = CACA_EVENT_MOUSE_RELEASE;
  303. _push_event(dp, ev);
  304. if(dp->mouse.x == x && dp->mouse.y == y)
  305. return _pop_event(dp, ev);
  306. dp->mouse.x = x;
  307. dp->mouse.y = y;
  308. ev->type = CACA_EVENT_MOUSE_MOTION;
  309. ev->data.mouse.x = dp->mouse.x;
  310. ev->data.mouse.y = dp->mouse.y;
  311. return 1;
  312. }
  313. switch(intkey)
  314. {
  315. case SL_KEY_UP: ev->data.key.ch = CACA_KEY_UP; break;
  316. case SL_KEY_DOWN: ev->data.key.ch = CACA_KEY_DOWN; break;
  317. case SL_KEY_LEFT: ev->data.key.ch = CACA_KEY_LEFT; break;
  318. case SL_KEY_RIGHT: ev->data.key.ch = CACA_KEY_RIGHT; break;
  319. case SL_KEY_IC: ev->data.key.ch = CACA_KEY_INSERT; break;
  320. case SL_KEY_DELETE: ev->data.key.ch = CACA_KEY_DELETE; break;
  321. case 0x7f:
  322. case SL_KEY_BACKSPACE: ev->data.key.ch = CACA_KEY_BACKSPACE; break;
  323. case SL_KEY_HOME: ev->data.key.ch = CACA_KEY_HOME; break;
  324. case SL_KEY_END: ev->data.key.ch = CACA_KEY_END; break;
  325. case SL_KEY_PPAGE: ev->data.key.ch = CACA_KEY_PAGEUP; break;
  326. case SL_KEY_NPAGE: ev->data.key.ch = CACA_KEY_PAGEDOWN; break;
  327. case SL_KEY_F(1): ev->data.key.ch = CACA_KEY_F1; break;
  328. case SL_KEY_F(2): ev->data.key.ch = CACA_KEY_F2; break;
  329. case SL_KEY_F(3): ev->data.key.ch = CACA_KEY_F3; break;
  330. case SL_KEY_F(4): ev->data.key.ch = CACA_KEY_F4; break;
  331. case SL_KEY_F(5): ev->data.key.ch = CACA_KEY_F5; break;
  332. case SL_KEY_F(6): ev->data.key.ch = CACA_KEY_F6; break;
  333. case SL_KEY_F(7): ev->data.key.ch = CACA_KEY_F7; break;
  334. case SL_KEY_F(8): ev->data.key.ch = CACA_KEY_F8; break;
  335. case SL_KEY_F(9): ev->data.key.ch = CACA_KEY_F9; break;
  336. case SL_KEY_F(10): ev->data.key.ch = CACA_KEY_F10; break;
  337. case SL_KEY_F(11): ev->data.key.ch = CACA_KEY_F11; break;
  338. case SL_KEY_F(12): ev->data.key.ch = CACA_KEY_F12; break;
  339. default:
  340. /* Unknown key */
  341. ev->type = CACA_EVENT_NONE; return 0;
  342. }
  343. ev->type = CACA_EVENT_KEY_PRESS;
  344. ev->data.key.utf32 = 0;
  345. ev->data.key.utf8[0] = '\0';
  346. return 1;
  347. }
  348. static void slang_set_cursor(caca_display_t *dp, int flags)
  349. {
  350. SLtt_set_cursor_visibility(flags ? 1 : 0);
  351. }
  352. /*
  353. * XXX: following functions are local
  354. */
  355. static void slang_init_palette(void)
  356. {
  357. /* See SLang ref., 5.4.4. */
  358. static char *slang_colors[16] =
  359. {
  360. /* Standard colours */
  361. "black",
  362. "blue",
  363. "green",
  364. "cyan",
  365. "red",
  366. "magenta",
  367. "brown",
  368. "lightgray",
  369. /* Bright colours */
  370. "gray",
  371. "brightblue",
  372. "brightgreen",
  373. "brightcyan",
  374. "brightred",
  375. "brightmagenta",
  376. "yellow",
  377. "white",
  378. };
  379. #if defined(OPTIMISE_SLANG_PALETTE)
  380. int i;
  381. for(i = 0; i < 16 * 16; i++)
  382. SLtt_set_color(i, NULL, slang_colors[slang_palette[i * 2]],
  383. slang_colors[slang_palette[i * 2 + 1]]);
  384. #else
  385. int fg, bg;
  386. for(bg = 0; bg < 16; bg++)
  387. for(fg = 0; fg < 16; fg++)
  388. {
  389. int i = fg + 16 * bg;
  390. SLtt_set_color(i, NULL, slang_colors[fg], slang_colors[bg]);
  391. }
  392. #endif
  393. }
  394. static void slang_write_utf32(uint32_t ch)
  395. {
  396. #ifdef HAVE_SLSMG_UTF8_ENABLE
  397. char buf[10];
  398. int bytes;
  399. #else
  400. char ascii;
  401. #endif
  402. if(ch == CUCUL_MAGIC_FULLWIDTH)
  403. return;
  404. #ifdef HAVE_SLSMG_UTF8_ENABLE
  405. bytes = cucul_utf32_to_utf8(buf, ch);
  406. buf[bytes] = '\0';
  407. SLsmg_write_string(buf);
  408. #else
  409. ascii = cucul_utf32_to_ascii(ch);
  410. SLsmg_write_char(ascii);
  411. if(cucul_utf32_is_fullwidth(ch))
  412. SLsmg_write_char(ascii);
  413. #endif
  414. }
  415. #if defined(HAVE_SIGNAL)
  416. static RETSIGTYPE sigwinch_handler(int sig)
  417. {
  418. sigwinch_d->resize.resized = 1;
  419. signal(SIGWINCH, sigwinch_handler);
  420. }
  421. #endif
  422. #if defined(HAVE_GETENV) && defined(HAVE_PUTENV)
  423. static void slang_check_terminal(void)
  424. {
  425. char *term, *colorterm;
  426. term = getenv("TERM");
  427. colorterm = getenv("COLORTERM");
  428. if(!term || strcmp(term, "xterm"))
  429. return;
  430. /* If we are using gnome-terminal, it's really a 16 colour terminal.
  431. * Ditto if we are using xfce4-terminal, or Konsole. */
  432. if((colorterm && (!strcmp(colorterm, "gnome-terminal")
  433. || !strcmp(colorterm, "Terminal")))
  434. || getenv("KONSOLE_DCOP_SESSION"))
  435. {
  436. (void)putenv("TERM=xterm-16color");
  437. return;
  438. }
  439. }
  440. #endif
  441. /*
  442. * Driver initialisation
  443. */
  444. int slang_install(caca_display_t *dp)
  445. {
  446. dp->drv.driver = CACA_DRIVER_SLANG;
  447. dp->drv.init_graphics = slang_init_graphics;
  448. dp->drv.end_graphics = slang_end_graphics;
  449. dp->drv.set_display_title = slang_set_display_title;
  450. dp->drv.get_display_width = slang_get_display_width;
  451. dp->drv.get_display_height = slang_get_display_height;
  452. dp->drv.display = slang_display;
  453. dp->drv.handle_resize = slang_handle_resize;
  454. dp->drv.get_event = slang_get_event;
  455. dp->drv.set_mouse = NULL;
  456. dp->drv.set_cursor = slang_set_cursor;
  457. return 0;
  458. }
  459. #endif /* USE_SLANG */