Nevar pievienot vairāk kā 25 tēmas Tēmai ir jāsākas ar burtu vai ciparu, tā var saturēt domu zīmes ('-') un var būt līdz 35 simboliem gara.

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  1. /*
  2. * libcaca Colour ASCII-Art library
  3. * Copyright (c) 2002-2009 Sam Hocevar <sam@hocevar.net>
  4. * 2007 Ben Wiley Sittler <bsittler@gmail.com>
  5. * All Rights Reserved
  6. *
  7. * $Id$
  8. *
  9. * This library is free software. It comes without any warranty, to
  10. * the extent permitted by applicable law. You can redistribute it
  11. * and/or modify it under the terms of the Do What The Fuck You Want
  12. * To Public License, Version 2, as published by Sam Hocevar. See
  13. * http://sam.zoy.org/wtfpl/COPYING for more details.
  14. */
  15. /*
  16. * This file contains the libcaca X11 input and output driver
  17. */
  18. #include "config.h"
  19. #if defined(USE_X11)
  20. #include <X11/Xlib.h>
  21. #include <X11/Xutil.h>
  22. #include <X11/keysym.h>
  23. #if defined(HAVE_X11_XKBLIB_H)
  24. # include <X11/XKBlib.h>
  25. #endif
  26. #include <stdio.h> /* BUFSIZ */
  27. #include <stdlib.h>
  28. #include <string.h>
  29. #include "caca.h"
  30. #include "caca.h"
  31. #include "caca_internals.h"
  32. /*
  33. * Local functions
  34. */
  35. static int x11_error_handler(Display *, XErrorEvent *);
  36. static void x11_put_glyph(caca_display_t *, int, int, int, int, int,
  37. uint32_t, uint32_t);
  38. struct driver_private
  39. {
  40. Display *dpy;
  41. Window window;
  42. Pixmap pixmap;
  43. GC gc;
  44. long int event_mask;
  45. int font_width, font_height;
  46. int colors[4096];
  47. Font font;
  48. XFontStruct *font_struct;
  49. int font_offset;
  50. Cursor pointer;
  51. Atom wm_protocols;
  52. Atom wm_delete_window;
  53. #if defined(HAVE_X11_XKBLIB_H)
  54. Bool autorepeat;
  55. #endif
  56. uint32_t max_char;
  57. int cursor_flags;
  58. };
  59. #define UNICODE_XLFD_SUFFIX "-iso10646-1"
  60. #define LATIN_1_XLFD_SUFFIX "-iso8859-1"
  61. static int x11_init_graphics(caca_display_t *dp)
  62. {
  63. Colormap colormap;
  64. XSetWindowAttributes x11_winattr;
  65. int (*old_error_handler)(Display *, XErrorEvent *);
  66. char const *fonts[] = { NULL, "8x13bold", "fixed" }, **parser;
  67. char const *geometry;
  68. int width = caca_get_canvas_width(dp->cv);
  69. int height = caca_get_canvas_height(dp->cv);
  70. int i;
  71. dp->drv.p = malloc(sizeof(struct driver_private));
  72. #if defined(HAVE_GETENV)
  73. geometry = getenv("CACA_GEOMETRY");
  74. if(geometry && *geometry)
  75. sscanf(geometry, "%ux%u", &width, &height);
  76. #endif
  77. caca_add_dirty_rect(dp->cv, 0, 0, dp->cv->width, dp->cv->height);
  78. dp->resize.allow = 1;
  79. caca_set_canvas_size(dp->cv, width ? width : 80, height ? height : 32);
  80. width = caca_get_canvas_width(dp->cv);
  81. height = caca_get_canvas_height(dp->cv);
  82. dp->resize.allow = 0;
  83. dp->drv.p->dpy = XOpenDisplay(NULL);
  84. if(dp->drv.p->dpy == NULL)
  85. return -1;
  86. #if defined(HAVE_GETENV)
  87. fonts[0] = getenv("CACA_FONT");
  88. if(fonts[0] && *fonts[0])
  89. parser = fonts;
  90. else
  91. #endif
  92. parser = fonts + 1;
  93. /* Ignore font errors */
  94. old_error_handler = XSetErrorHandler(x11_error_handler);
  95. /* Parse our font list */
  96. for( ; ; parser++)
  97. {
  98. uint32_t font_max_char;
  99. if(!*parser)
  100. {
  101. XSetErrorHandler(old_error_handler);
  102. XCloseDisplay(dp->drv.p->dpy);
  103. return -1;
  104. }
  105. dp->drv.p->font = XLoadFont(dp->drv.p->dpy, *parser);
  106. if(!dp->drv.p->font)
  107. continue;
  108. dp->drv.p->font_struct = XQueryFont(dp->drv.p->dpy, dp->drv.p->font);
  109. if(!dp->drv.p->font_struct)
  110. {
  111. XUnloadFont(dp->drv.p->dpy, dp->drv.p->font);
  112. continue;
  113. }
  114. if((strlen(*parser) > sizeof(UNICODE_XLFD_SUFFIX))
  115. && !strcasecmp(*parser + strlen(*parser)
  116. - strlen(UNICODE_XLFD_SUFFIX), UNICODE_XLFD_SUFFIX))
  117. dp->drv.p->max_char = 0xffff;
  118. else if((strlen(*parser) > sizeof(LATIN_1_XLFD_SUFFIX))
  119. && !strcasecmp(*parser + strlen(*parser)
  120. - strlen(LATIN_1_XLFD_SUFFIX), LATIN_1_XLFD_SUFFIX))
  121. dp->drv.p->max_char = 0xff;
  122. else
  123. dp->drv.p->max_char = 0x7f;
  124. font_max_char =
  125. (dp->drv.p->font_struct->max_byte1 << 8)
  126. | dp->drv.p->font_struct->max_char_or_byte2;
  127. if(font_max_char && (font_max_char < dp->drv.p->max_char))
  128. dp->drv.p->max_char = font_max_char;
  129. break;
  130. }
  131. /* Reset the default X11 error handler */
  132. XSetErrorHandler(old_error_handler);
  133. dp->drv.p->font_width = 0;
  134. if(dp->drv.p->font_struct->per_char
  135. && !dp->drv.p->font_struct->min_byte1
  136. && dp->drv.p->font_struct->min_char_or_byte2 <= 0x21
  137. && dp->drv.p->font_struct->max_char_or_byte2 >= 0x7e)
  138. {
  139. for(i = 0x21; i < 0x7f; i++)
  140. {
  141. int cw = dp->drv.p->font_struct->per_char[i
  142. - dp->drv.p->font_struct->min_char_or_byte2].width;
  143. if(cw > dp->drv.p->font_width)
  144. dp->drv.p->font_width = cw;
  145. }
  146. }
  147. if(!dp->drv.p->font_width)
  148. dp->drv.p->font_width = dp->drv.p->font_struct->max_bounds.width;
  149. dp->drv.p->font_height = dp->drv.p->font_struct->max_bounds.ascent
  150. + dp->drv.p->font_struct->max_bounds.descent;
  151. dp->drv.p->font_offset = dp->drv.p->font_struct->max_bounds.descent;
  152. colormap = DefaultColormap(dp->drv.p->dpy, DefaultScreen(dp->drv.p->dpy));
  153. for(i = 0x000; i < 0x1000; i++)
  154. {
  155. XColor color;
  156. color.red = ((i & 0xf00) >> 8) * 0x1111;
  157. color.green = ((i & 0x0f0) >> 4) * 0x1111;
  158. color.blue = (i & 0x00f) * 0x1111;
  159. XAllocColor(dp->drv.p->dpy, colormap, &color);
  160. dp->drv.p->colors[i] = color.pixel;
  161. }
  162. x11_winattr.backing_store = Always;
  163. x11_winattr.background_pixel = dp->drv.p->colors[0x000];
  164. x11_winattr.event_mask = ExposureMask | StructureNotifyMask;
  165. dp->drv.p->window =
  166. XCreateWindow(dp->drv.p->dpy, DefaultRootWindow(dp->drv.p->dpy), 0, 0,
  167. width * dp->drv.p->font_width,
  168. height * dp->drv.p->font_height,
  169. 0, 0, InputOutput, 0,
  170. CWBackingStore | CWBackPixel | CWEventMask,
  171. &x11_winattr);
  172. dp->drv.p->wm_protocols =
  173. XInternAtom(dp->drv.p->dpy, "WM_PROTOCOLS", True);
  174. dp->drv.p->wm_delete_window =
  175. XInternAtom(dp->drv.p->dpy, "WM_DELETE_WINDOW", True);
  176. if(dp->drv.p->wm_protocols != None && dp->drv.p->wm_delete_window != None)
  177. XSetWMProtocols(dp->drv.p->dpy, dp->drv.p->window,
  178. &dp->drv.p->wm_delete_window, 1);
  179. XStoreName(dp->drv.p->dpy, dp->drv.p->window, "caca for X");
  180. XSelectInput(dp->drv.p->dpy, dp->drv.p->window, StructureNotifyMask);
  181. XMapWindow(dp->drv.p->dpy, dp->drv.p->window);
  182. dp->drv.p->gc = XCreateGC(dp->drv.p->dpy, dp->drv.p->window, 0, NULL);
  183. XSetForeground(dp->drv.p->dpy, dp->drv.p->gc, dp->drv.p->colors[0x888]);
  184. XSetFont(dp->drv.p->dpy, dp->drv.p->gc, dp->drv.p->font);
  185. for(;;)
  186. {
  187. XEvent xevent;
  188. XNextEvent(dp->drv.p->dpy, &xevent);
  189. if(xevent.type == MapNotify)
  190. break;
  191. }
  192. #if defined(HAVE_X11_XKBLIB_H)
  193. /* Disable autorepeat */
  194. XkbSetDetectableAutoRepeat(dp->drv.p->dpy, True, &dp->drv.p->autorepeat);
  195. if(!dp->drv.p->autorepeat)
  196. XAutoRepeatOff(dp->drv.p->dpy);
  197. #endif
  198. dp->drv.p->event_mask = KeyPressMask | KeyReleaseMask | ButtonPressMask
  199. | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask
  200. | ExposureMask;
  201. XSelectInput(dp->drv.p->dpy, dp->drv.p->window, dp->drv.p->event_mask);
  202. XSync(dp->drv.p->dpy, False);
  203. dp->drv.p->pixmap = XCreatePixmap(dp->drv.p->dpy, dp->drv.p->window,
  204. width * dp->drv.p->font_width,
  205. height * dp->drv.p->font_height,
  206. DefaultDepth(dp->drv.p->dpy,
  207. DefaultScreen(dp->drv.p->dpy)));
  208. dp->drv.p->pointer = None;
  209. dp->drv.p->cursor_flags = 0;
  210. return 0;
  211. }
  212. static int x11_end_graphics(caca_display_t *dp)
  213. {
  214. XSync(dp->drv.p->dpy, False);
  215. #if defined(HAVE_X11_XKBLIB_H)
  216. if(!dp->drv.p->autorepeat)
  217. XAutoRepeatOn(dp->drv.p->dpy);
  218. #endif
  219. XFreePixmap(dp->drv.p->dpy, dp->drv.p->pixmap);
  220. XFreeFont(dp->drv.p->dpy, dp->drv.p->font_struct);
  221. XFreeGC(dp->drv.p->dpy, dp->drv.p->gc);
  222. XUnmapWindow(dp->drv.p->dpy, dp->drv.p->window);
  223. XDestroyWindow(dp->drv.p->dpy, dp->drv.p->window);
  224. XCloseDisplay(dp->drv.p->dpy);
  225. free(dp->drv.p);
  226. return 0;
  227. }
  228. static int x11_set_display_title(caca_display_t *dp, char const *title)
  229. {
  230. XStoreName(dp->drv.p->dpy, dp->drv.p->window, title);
  231. return 0;
  232. }
  233. static int x11_get_display_width(caca_display_t const *dp)
  234. {
  235. return caca_get_canvas_width(dp->cv) * dp->drv.p->font_width;
  236. }
  237. static int x11_get_display_height(caca_display_t const *dp)
  238. {
  239. return caca_get_canvas_height(dp->cv) * dp->drv.p->font_height;
  240. }
  241. static void x11_display(caca_display_t *dp)
  242. {
  243. uint32_t const *cvchars = (uint32_t const *)caca_get_canvas_chars(dp->cv);
  244. uint32_t const *cvattrs = (uint32_t const *)caca_get_canvas_attrs(dp->cv);
  245. int width = caca_get_canvas_width(dp->cv);
  246. int height = caca_get_canvas_height(dp->cv);
  247. int x, y, i, len;
  248. for(i = 0; i < caca_get_dirty_rect_count(dp->cv); i++)
  249. {
  250. int dx, dy, dw, dh;
  251. caca_get_dirty_rect(dp->cv, i, &dx, &dy, &dw, &dh);
  252. /* First draw the background colours. Splitting the process in two
  253. * loops like this is actually slightly faster. */
  254. for(y = dy; y < dy + dh; y++)
  255. {
  256. for(x = dx; x < dx + dw; x += len)
  257. {
  258. uint32_t const *attrs = cvattrs + x + y * width;
  259. uint16_t bg = caca_attr_to_rgb12_bg(*attrs);
  260. len = 1;
  261. while(x + len < dx + dw
  262. && caca_attr_to_rgb12_bg(attrs[len]) == bg)
  263. len++;
  264. XSetForeground(dp->drv.p->dpy, dp->drv.p->gc,
  265. dp->drv.p->colors[bg]);
  266. XFillRectangle(dp->drv.p->dpy, dp->drv.p->pixmap,
  267. dp->drv.p->gc,
  268. x * dp->drv.p->font_width,
  269. y * dp->drv.p->font_height,
  270. len * dp->drv.p->font_width,
  271. dp->drv.p->font_height);
  272. }
  273. }
  274. /* Then print the foreground characters */
  275. for(y = dy; y < dy + dh; y++)
  276. {
  277. int yoff = (y + 1) * dp->drv.p->font_height
  278. - dp->drv.p->font_offset;
  279. uint32_t const *chars = cvchars + dx + y * width;
  280. uint32_t const *attrs = cvattrs + dx + y * width;
  281. for(x = dx; x < dx + dw; x++, chars++, attrs++)
  282. {
  283. XSetForeground(dp->drv.p->dpy, dp->drv.p->gc,
  284. dp->drv.p->colors[caca_attr_to_rgb12_fg(*attrs)]);
  285. x11_put_glyph(dp, x * dp->drv.p->font_width,
  286. y * dp->drv.p->font_height, yoff,
  287. dp->drv.p->font_width, dp->drv.p->font_height,
  288. *attrs, *chars);
  289. }
  290. }
  291. }
  292. /* Print the cursor if necessary. FIXME: handle dirty rectangles! */
  293. if(dp->drv.p->cursor_flags)
  294. {
  295. XSetForeground(dp->drv.p->dpy, dp->drv.p->gc,
  296. dp->drv.p->colors[0xfff]);
  297. x = caca_get_cursor_x(dp->cv);
  298. y = caca_get_cursor_y(dp->cv);
  299. XFillRectangle(dp->drv.p->dpy, dp->drv.p->pixmap, dp->drv.p->gc,
  300. x * dp->drv.p->font_width, y * dp->drv.p->font_height,
  301. dp->drv.p->font_width, dp->drv.p->font_height);
  302. }
  303. XCopyArea(dp->drv.p->dpy, dp->drv.p->pixmap, dp->drv.p->window,
  304. dp->drv.p->gc, 0, 0,
  305. width * dp->drv.p->font_width,
  306. height * dp->drv.p->font_height,
  307. 0, 0);
  308. XFlush(dp->drv.p->dpy);
  309. }
  310. static void x11_handle_resize(caca_display_t *dp)
  311. {
  312. Pixmap new_pixmap;
  313. new_pixmap = XCreatePixmap(dp->drv.p->dpy, dp->drv.p->window,
  314. dp->resize.w * dp->drv.p->font_width,
  315. dp->resize.h * dp->drv.p->font_height,
  316. DefaultDepth(dp->drv.p->dpy,
  317. DefaultScreen(dp->drv.p->dpy)));
  318. XCopyArea(dp->drv.p->dpy, dp->drv.p->pixmap, new_pixmap,
  319. dp->drv.p->gc, 0, 0,
  320. dp->resize.w * dp->drv.p->font_width,
  321. dp->resize.h * dp->drv.p->font_height, 0, 0);
  322. XFreePixmap(dp->drv.p->dpy, dp->drv.p->pixmap);
  323. dp->drv.p->pixmap = new_pixmap;
  324. }
  325. static int x11_get_event(caca_display_t *dp, caca_privevent_t *ev)
  326. {
  327. int width = caca_get_canvas_width(dp->cv);
  328. int height = caca_get_canvas_height(dp->cv);
  329. XEvent xevent;
  330. char key;
  331. while(XCheckWindowEvent(dp->drv.p->dpy, dp->drv.p->window,
  332. dp->drv.p->event_mask, &xevent) == True)
  333. {
  334. KeySym keysym;
  335. /* Expose event */
  336. if(xevent.type == Expose)
  337. {
  338. XCopyArea(dp->drv.p->dpy, dp->drv.p->pixmap,
  339. dp->drv.p->window, dp->drv.p->gc, 0, 0,
  340. width * dp->drv.p->font_width,
  341. height * dp->drv.p->font_height, 0, 0);
  342. continue;
  343. }
  344. /* Resize event */
  345. if(xevent.type == ConfigureNotify)
  346. {
  347. int w, h;
  348. w = (xevent.xconfigure.width + dp->drv.p->font_width / 3)
  349. / dp->drv.p->font_width;
  350. h = (xevent.xconfigure.height + dp->drv.p->font_height / 3)
  351. / dp->drv.p->font_height;
  352. if(!w || !h || (w == width && h == height))
  353. continue;
  354. dp->resize.w = w;
  355. dp->resize.h = h;
  356. dp->resize.resized = 1;
  357. continue;
  358. }
  359. /* Check for mouse motion events */
  360. if(xevent.type == MotionNotify)
  361. {
  362. int newx = xevent.xmotion.x / dp->drv.p->font_width;
  363. int newy = xevent.xmotion.y / dp->drv.p->font_height;
  364. if(newx >= width)
  365. newx = width - 1;
  366. if(newy >= height)
  367. newy = height - 1;
  368. if(dp->mouse.x == newx && dp->mouse.y == newy)
  369. continue;
  370. dp->mouse.x = newx;
  371. dp->mouse.y = newy;
  372. ev->type = CACA_EVENT_MOUSE_MOTION;
  373. ev->data.mouse.x = dp->mouse.x;
  374. ev->data.mouse.y = dp->mouse.y;
  375. return 1;
  376. }
  377. /* Check for mouse press and release events */
  378. if(xevent.type == ButtonPress)
  379. {
  380. ev->type = CACA_EVENT_MOUSE_PRESS;
  381. ev->data.mouse.button = ((XButtonEvent *)&xevent)->button;
  382. return 1;
  383. }
  384. if(xevent.type == ButtonRelease)
  385. {
  386. ev->type = CACA_EVENT_MOUSE_RELEASE;
  387. ev->data.mouse.button = ((XButtonEvent *)&xevent)->button;
  388. return 1;
  389. }
  390. /* Check for key press and release events */
  391. if(xevent.type == KeyPress)
  392. ev->type = CACA_EVENT_KEY_PRESS;
  393. else if(xevent.type == KeyRelease)
  394. ev->type = CACA_EVENT_KEY_RELEASE;
  395. else
  396. continue;
  397. if(XLookupString(&xevent.xkey, &key, 1, NULL, NULL))
  398. {
  399. ev->data.key.ch = key;
  400. ev->data.key.utf32 = key;
  401. ev->data.key.utf8[0] = key;
  402. ev->data.key.utf8[1] = '\0';
  403. return 1;
  404. }
  405. keysym = XKeycodeToKeysym(dp->drv.p->dpy, xevent.xkey.keycode, 0);
  406. switch(keysym)
  407. {
  408. case XK_F1: ev->data.key.ch = CACA_KEY_F1; break;
  409. case XK_F2: ev->data.key.ch = CACA_KEY_F2; break;
  410. case XK_F3: ev->data.key.ch = CACA_KEY_F3; break;
  411. case XK_F4: ev->data.key.ch = CACA_KEY_F4; break;
  412. case XK_F5: ev->data.key.ch = CACA_KEY_F5; break;
  413. case XK_F6: ev->data.key.ch = CACA_KEY_F6; break;
  414. case XK_F7: ev->data.key.ch = CACA_KEY_F7; break;
  415. case XK_F8: ev->data.key.ch = CACA_KEY_F8; break;
  416. case XK_F9: ev->data.key.ch = CACA_KEY_F9; break;
  417. case XK_F10: ev->data.key.ch = CACA_KEY_F10; break;
  418. case XK_F11: ev->data.key.ch = CACA_KEY_F11; break;
  419. case XK_F12: ev->data.key.ch = CACA_KEY_F12; break;
  420. case XK_F13: ev->data.key.ch = CACA_KEY_F13; break;
  421. case XK_F14: ev->data.key.ch = CACA_KEY_F14; break;
  422. case XK_F15: ev->data.key.ch = CACA_KEY_F15; break;
  423. case XK_Left: ev->data.key.ch = CACA_KEY_LEFT; break;
  424. case XK_Right: ev->data.key.ch = CACA_KEY_RIGHT; break;
  425. case XK_Up: ev->data.key.ch = CACA_KEY_UP; break;
  426. case XK_Down: ev->data.key.ch = CACA_KEY_DOWN; break;
  427. case XK_KP_Page_Up:
  428. case XK_Page_Up: ev->data.key.ch = CACA_KEY_PAGEUP; break;
  429. case XK_KP_Page_Down:
  430. case XK_Page_Down: ev->data.key.ch = CACA_KEY_PAGEDOWN; break;
  431. case XK_KP_Home:
  432. case XK_Home: ev->data.key.ch = CACA_KEY_HOME; break;
  433. case XK_KP_End:
  434. case XK_End: ev->data.key.ch = CACA_KEY_END; break;
  435. default: ev->type = CACA_EVENT_NONE; return 0;
  436. }
  437. ev->data.key.utf32 = 0;
  438. ev->data.key.utf8[0] = '\0';
  439. return 1;
  440. }
  441. while(XCheckTypedEvent(dp->drv.p->dpy, ClientMessage, &xevent))
  442. {
  443. if(xevent.xclient.message_type != dp->drv.p->wm_protocols)
  444. continue;
  445. if((Atom)xevent.xclient.data.l[0] == dp->drv.p->wm_delete_window)
  446. {
  447. ev->type = CACA_EVENT_QUIT;
  448. return 1;
  449. }
  450. }
  451. ev->type = CACA_EVENT_NONE;
  452. return 0;
  453. }
  454. static void x11_set_mouse(caca_display_t *dp, int flags)
  455. {
  456. Cursor no_ptr;
  457. Pixmap bm_no;
  458. XColor black, dummy;
  459. Colormap colormap;
  460. static char const empty[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
  461. if(flags)
  462. {
  463. XDefineCursor(dp->drv.p->dpy,dp->drv.p->window, 0);
  464. return;
  465. }
  466. colormap = DefaultColormap(dp->drv.p->dpy, DefaultScreen(dp->drv.p->dpy));
  467. if(!XAllocNamedColor(dp->drv.p->dpy, colormap, "black", &black, &dummy))
  468. {
  469. return;
  470. }
  471. bm_no = XCreateBitmapFromData(dp->drv.p->dpy, dp->drv.p->window,
  472. empty, 8, 8);
  473. no_ptr = XCreatePixmapCursor(dp->drv.p->dpy, bm_no, bm_no,
  474. &black, &black, 0, 0);
  475. XDefineCursor(dp->drv.p->dpy, dp->drv.p->window, no_ptr);
  476. XFreeCursor(dp->drv.p->dpy, no_ptr);
  477. if(bm_no != None)
  478. XFreePixmap(dp->drv.p->dpy, bm_no);
  479. XFreeColors(dp->drv.p->dpy, colormap, &black.pixel, 1, 0);
  480. XSync(dp->drv.p->dpy, False);
  481. }
  482. static void x11_set_cursor(caca_display_t *dp, int flags)
  483. {
  484. dp->drv.p->cursor_flags = flags;
  485. }
  486. /*
  487. * XXX: following functions are local
  488. */
  489. static int x11_error_handler(Display *dpy, XErrorEvent *xevent)
  490. {
  491. /* Ignore the error */
  492. return 0;
  493. }
  494. static void x11_put_glyph(caca_display_t *dp, int x, int y, int yoff,
  495. int w, int h, uint32_t attr, uint32_t ch)
  496. {
  497. static uint8_t const udlr[] =
  498. {
  499. /* 0x2500 - 0x250f: ─ . │ . . . . . . . . . ┌ . . . */
  500. 0x05, 0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
  501. 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00,
  502. /* 0x2510 - 0x251f: ┐ . . . └ . . . ┘ . . . ├ . . . */
  503. 0x14, 0x00, 0x00, 0x00, 0x41, 0x00, 0x00, 0x00,
  504. 0x44, 0x00, 0x00, 0x00, 0x51, 0x00, 0x00, 0x00,
  505. /* 0x2520 - 0x252f: . . . . ┤ . . . . . . . ┬ . . . */
  506. 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00,
  507. 0x00, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00,
  508. /* 0x2530 - 0x253f: . . . . ┴ . . . . . . . ┼ . . . */
  509. 0x00, 0x00, 0x00, 0x00, 0x45, 0x00, 0x00, 0x00,
  510. 0x00, 0x00, 0x00, 0x00, 0x55, 0x00, 0x00, 0x00,
  511. /* 0x2540 - 0x254f: . . . . . . . . . . . . . . . . */
  512. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  513. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  514. /* 0x2550 - 0x255f: ═ ║ ╒ ╓ ╔ ╕ ╖ ╗ ╘ ╙ ╚ ╛ ╜ ╝ ╞ ╟ */
  515. 0x0a, 0xa0, 0x12, 0x21, 0x22, 0x18, 0x24, 0x28,
  516. 0x42, 0x81, 0x82, 0x48, 0x84, 0x88, 0x52, 0xa1,
  517. /* 0x2560 - 0x256c: ╠ ╡ ╢ ╣ ╤ ╥ ╦ ╧ ╨ ╩ ╪ ╫ ╬ */
  518. 0xa2, 0x58, 0xa4, 0xa8, 0x1a, 0x25, 0x2a, 0x4a,
  519. 0x85, 0x8a, 0x5a, 0xa5, 0xaa,
  520. };
  521. Display *dpy = dp->drv.p->dpy;
  522. Pixmap px = dp->drv.p->pixmap;
  523. GC gc = dp->drv.p->gc;
  524. int fw;
  525. XChar2b ch16;
  526. /* Underline */
  527. if(attr & CACA_UNDERLINE)
  528. XFillRectangle(dpy, px, gc, x, y + h - 1, w, 1);
  529. /* Skip spaces and magic stuff */
  530. if(ch <= 0x00000020)
  531. return;
  532. if(ch == CACA_MAGIC_FULLWIDTH)
  533. return;
  534. fw = w;
  535. if(caca_utf32_is_fullwidth(ch))
  536. fw *= 2;
  537. /* We want to be able to print a few special Unicode characters
  538. * such as the CP437 gradients and half blocks. For unknown
  539. * characters, print what caca_utf32_to_ascii() returns. */
  540. if(ch >= 0x2500 && ch <= 0x256c && udlr[ch - 0x2500])
  541. {
  542. uint16_t D = udlr[ch - 0x2500];
  543. if(D & 0x04)
  544. XFillRectangle(dpy, px, gc, x, y + h / 2, fw / 2 + 1, 1);
  545. if(D & 0x01)
  546. XFillRectangle(dpy, px, gc,
  547. x + fw / 2, y + h / 2, (fw + 1) / 2, 1);
  548. if(D & 0x40)
  549. XFillRectangle(dpy, px, gc, x + fw / 2, y, 1, h / 2 + 1);
  550. if(D & 0x10)
  551. XFillRectangle(dpy, px, gc, x + fw / 2, y + h / 2, 1, (h + 1) / 2);
  552. #define STEPIF(a,b) (D&(a)?-1:(D&(b))?1:0)
  553. if(D & 0x08)
  554. {
  555. XFillRectangle(dpy, px, gc, x, y - 1 + h / 2,
  556. fw / 2 + 1 + STEPIF(0xc0,0x20), 1);
  557. XFillRectangle(dpy, px, gc, x, y + 1 + h / 2,
  558. fw / 2 + 1 + STEPIF(0x30,0x80), 1);
  559. }
  560. if(D & 0x02)
  561. {
  562. XFillRectangle(dpy, px, gc, x - STEPIF(0xc0,0x20) + fw / 2,
  563. y - 1 + h / 2, (fw + 1) / 2 + STEPIF(0xc0,0x20), 1);
  564. XFillRectangle(dpy, px, gc, x - STEPIF(0x30,0x80) + fw / 2,
  565. y + 1 + h / 2, (fw + 1) / 2 + STEPIF(0x30,0x80), 1);
  566. }
  567. if(D & 0x80)
  568. {
  569. XFillRectangle(dpy, px, gc, x - 1 + fw / 2, y,
  570. 1, h / 2 + 1 + STEPIF(0x0c,0x02));
  571. XFillRectangle(dpy, px, gc, x + 1 + fw / 2, y,
  572. 1, h / 2 + 1 + STEPIF(0x03,0x08));
  573. }
  574. if(D & 0x20)
  575. {
  576. XFillRectangle(dpy, px, gc, x - 1 + fw / 2,
  577. y - STEPIF(0x0c,0x02) + h / 2,
  578. 1, (h + 1) / 2 + STEPIF(0x0c,0x02));
  579. XFillRectangle(dpy, px, gc, x + 1 + fw / 2,
  580. y - STEPIF(0x03,0x08) + h / 2,
  581. 1, (h + 1) / 2 + STEPIF(0x03,0x08));
  582. }
  583. return;
  584. }
  585. switch(ch)
  586. {
  587. case 0x000000b7: /* · */
  588. case 0x00002219: /* ∙ */
  589. case 0x000030fb: /* ・ */
  590. XFillRectangle(dpy, px, gc, x + fw / 2 - 1, y + h / 2 - 1, 2, 2);
  591. return;
  592. case 0x00002261: /* ≡ */
  593. XFillRectangle(dpy, px, gc, x + 1, y - 2 + h / 2, fw - 1, 1);
  594. XFillRectangle(dpy, px, gc, x + 1, y + h / 2, fw - 1, 1);
  595. XFillRectangle(dpy, px, gc, x + 1, y + 2 + h / 2, fw - 1, 1);
  596. return;
  597. case 0x00002580: /* ▀ */
  598. XFillRectangle(dpy, px, gc, x, y, fw, h / 2);
  599. return;
  600. case 0x00002584: /* ▄ */
  601. XFillRectangle(dpy, px, gc, x, y + h - h / 2, fw, h / 2);
  602. return;
  603. case 0x00002588: /* █ */
  604. case 0x000025ae: /* ▮ */
  605. XFillRectangle(dpy, px, gc, x, y, fw, h);
  606. return;
  607. case 0x0000258c: /* ▌ */
  608. XFillRectangle(dpy, px, gc, x, y, fw / 2, h);
  609. return;
  610. case 0x00002590: /* ▐ */
  611. XFillRectangle(dpy, px, gc, x + fw - fw / 2, y, fw / 2, h);
  612. return;
  613. case 0x000025a0: /* ■ */
  614. case 0x000025ac: /* ▬ */
  615. XFillRectangle(dpy, px, gc, x, y + h / 4, fw, h / 2);
  616. return;
  617. case 0x00002593: /* ▓ */
  618. case 0x00002592: /* ▒ */
  619. case 0x00002591: /* ░ */
  620. {
  621. /* FIXME: this sucks utterly */
  622. int i, j, k = ch - 0x00002591;
  623. for(j = h; j--; )
  624. for(i = fw; i--; )
  625. {
  626. if(((i + 2 * (j & 1)) & 3) > k)
  627. continue;
  628. XDrawPoint(dpy, px, gc, x + i, y + j);
  629. }
  630. return;
  631. }
  632. case 0x000025cb: /* ○ */
  633. case 0x00002022: /* • */
  634. case 0x000025cf: /* ● */
  635. {
  636. int d, xo, yo;
  637. d = fw >> (~ch & 0x1); /* XXX: hack */
  638. if(h < fw)
  639. d = h;
  640. if(d < 1)
  641. d = 1;
  642. xo = (fw - d) / 2;
  643. yo = (h - d) / 2;
  644. if(ch == 0x000025cb)
  645. XDrawArc(dpy, px, gc, x + xo, y + yo, d, d, 0, 64 * 360);
  646. else
  647. XFillArc(dpy, px, gc, x + xo, y + yo, d, d, 0, 64 * 360);
  648. return;
  649. }
  650. }
  651. if(ch >= 0x00000020 && ch <= dp->drv.p->max_char)
  652. {
  653. /* ascii, latin-1 or unicode font (might draw a blank square) */
  654. ch16.byte1 = (ch) >> 8;
  655. ch16.byte2 = (ch) & 0xff;
  656. }
  657. else
  658. {
  659. ch16.byte1 = 0;
  660. ch16.byte2 = caca_utf32_to_ascii(ch);
  661. }
  662. XDrawString16(dpy, px, gc, x + (ch16.byte1 ? 0 : (fw - w) / 2), yoff, &ch16, 1);
  663. }
  664. /*
  665. * Driver initialisation
  666. */
  667. int x11_install(caca_display_t *dp)
  668. {
  669. #if defined(HAVE_GETENV)
  670. if(!getenv("DISPLAY") || !*(getenv("DISPLAY")))
  671. return -1;
  672. #endif
  673. dp->drv.id = CACA_DRIVER_X11;
  674. dp->drv.driver = "x11";
  675. dp->drv.init_graphics = x11_init_graphics;
  676. dp->drv.end_graphics = x11_end_graphics;
  677. dp->drv.set_display_title = x11_set_display_title;
  678. dp->drv.get_display_width = x11_get_display_width;
  679. dp->drv.get_display_height = x11_get_display_height;
  680. dp->drv.display = x11_display;
  681. dp->drv.handle_resize = x11_handle_resize;
  682. dp->drv.get_event = x11_get_event;
  683. dp->drv.set_mouse = x11_set_mouse;
  684. dp->drv.set_cursor = x11_set_cursor;
  685. return 0;
  686. }
  687. #endif /* USE_X11 */