392b07b2 |
1 | /* |
c7b78b94 |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2009-2012 |
392b07b2 |
3 | * |
957a9eac |
4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
392b07b2 |
8 | * See the COPYING file in the top-level directory. |
9 | */ |
10 | |
b2c5ee47 |
11 | #include <stdio.h> |
12 | #include <string.h> |
13 | #include <pthread.h> |
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14 | |
b2c5ee47 |
15 | #include <dlfcn.h> |
16 | #include <X11/Xlib.h> |
17 | #include <X11/Xutil.h> |
838a76d4 |
18 | #include <X11/XKBlib.h> |
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19 | |
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20 | #include <sys/types.h> |
21 | #include <sys/stat.h> |
22 | #include <fcntl.h> |
23 | #include <unistd.h> |
24 | #include <sys/ioctl.h> |
25 | #include <termios.h> |
26 | #include <linux/kd.h> |
27 | |
838a76d4 |
28 | #define PFX "xenv: " |
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29 | |
b2c5ee47 |
30 | #define FPTR(f) typeof(f) * p##f |
31 | #define FPTR_LINK(xf, dl, f) { \ |
32 | xf.p##f = dlsym(dl, #f); \ |
33 | if (xf.p##f == NULL) { \ |
34 | fprintf(stderr, "missing symbol: %s\n", #f); \ |
35 | goto fail; \ |
36 | } \ |
37 | } |
38 | |
838a76d4 |
39 | struct xstuff { |
40 | Display *display; |
477ba3f2 |
41 | Window window; |
838a76d4 |
42 | FPTR(XCreateBitmapFromData); |
43 | FPTR(XCreatePixmapCursor); |
44 | FPTR(XFreePixmap); |
45 | FPTR(XOpenDisplay); |
46 | FPTR(XDisplayName); |
47 | FPTR(XCloseDisplay); |
48 | FPTR(XCreateSimpleWindow); |
49 | FPTR(XChangeWindowAttributes); |
50 | FPTR(XSelectInput); |
51 | FPTR(XMapWindow); |
52 | FPTR(XNextEvent); |
53 | FPTR(XCheckTypedEvent); |
477ba3f2 |
54 | FPTR(XWithdrawWindow); |
838a76d4 |
55 | FPTR(XGrabKeyboard); |
56 | FPTR(XPending); |
57 | FPTR(XLookupKeysym); |
58 | FPTR(XkbSetDetectableAutoRepeat); |
477ba3f2 |
59 | FPTR(XStoreName); |
60 | FPTR(XIconifyWindow); |
61 | FPTR(XMoveResizeWindow); |
62 | FPTR(XInternAtom); |
63 | FPTR(XSetWMHints); |
64 | FPTR(XSync); |
b2c5ee47 |
65 | }; |
66 | |
838a76d4 |
67 | static struct xstuff g_xstuff; |
b2c5ee47 |
68 | |
838a76d4 |
69 | static Cursor transparent_cursor(struct xstuff *xf, Display *display, Window win) |
b2c5ee47 |
70 | { |
71 | Cursor cursor; |
72 | Pixmap pix; |
73 | XColor dummy; |
74 | char d = 0; |
75 | |
76 | memset(&dummy, 0, sizeof(dummy)); |
77 | pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1); |
78 | cursor = xf->pXCreatePixmapCursor(display, pix, pix, |
79 | &dummy, &dummy, 0, 0); |
80 | xf->pXFreePixmap(display, pix); |
81 | return cursor; |
82 | } |
83 | |
477ba3f2 |
84 | static int x11h_init(const char *window_title) |
b2c5ee47 |
85 | { |
b2c5ee47 |
86 | unsigned int display_width, display_height; |
838a76d4 |
87 | Display *display; |
b2c5ee47 |
88 | XSetWindowAttributes attributes; |
89 | Window win; |
b2c5ee47 |
90 | Visual *visual; |
91 | void *x11lib; |
92 | int screen; |
93 | |
838a76d4 |
94 | memset(&g_xstuff, 0, sizeof(g_xstuff)); |
b2c5ee47 |
95 | x11lib = dlopen("libX11.so.6", RTLD_LAZY); |
96 | if (x11lib == NULL) { |
97 | fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror()); |
98 | goto fail; |
99 | } |
838a76d4 |
100 | FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData); |
101 | FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor); |
102 | FPTR_LINK(g_xstuff, x11lib, XFreePixmap); |
103 | FPTR_LINK(g_xstuff, x11lib, XOpenDisplay); |
104 | FPTR_LINK(g_xstuff, x11lib, XDisplayName); |
105 | FPTR_LINK(g_xstuff, x11lib, XCloseDisplay); |
106 | FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow); |
107 | FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes); |
108 | FPTR_LINK(g_xstuff, x11lib, XSelectInput); |
109 | FPTR_LINK(g_xstuff, x11lib, XMapWindow); |
110 | FPTR_LINK(g_xstuff, x11lib, XNextEvent); |
111 | FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent); |
477ba3f2 |
112 | FPTR_LINK(g_xstuff, x11lib, XWithdrawWindow); |
838a76d4 |
113 | FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard); |
114 | FPTR_LINK(g_xstuff, x11lib, XPending); |
115 | FPTR_LINK(g_xstuff, x11lib, XLookupKeysym); |
116 | FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat); |
477ba3f2 |
117 | FPTR_LINK(g_xstuff, x11lib, XStoreName); |
118 | FPTR_LINK(g_xstuff, x11lib, XIconifyWindow); |
119 | FPTR_LINK(g_xstuff, x11lib, XMoveResizeWindow); |
120 | FPTR_LINK(g_xstuff, x11lib, XInternAtom); |
121 | FPTR_LINK(g_xstuff, x11lib, XSetWMHints); |
122 | FPTR_LINK(g_xstuff, x11lib, XSync); |
b2c5ee47 |
123 | |
124 | //XInitThreads(); |
125 | |
838a76d4 |
126 | g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL); |
b2c5ee47 |
127 | if (display == NULL) |
128 | { |
129 | fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n", |
838a76d4 |
130 | g_xstuff.pXDisplayName(NULL)); |
b2c5ee47 |
131 | goto fail2; |
132 | } |
133 | |
134 | visual = DefaultVisual(display, 0); |
135 | if (visual->class != TrueColor) |
f6eaae4f |
136 | fprintf(stderr, PFX "warning: non true color visual\n"); |
b2c5ee47 |
137 | |
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138 | printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display), |
b2c5ee47 |
139 | VendorRelease(display), DisplayString(display), ProtocolVersion(display), |
140 | ProtocolRevision(display)); |
141 | |
142 | screen = DefaultScreen(display); |
143 | |
144 | display_width = DisplayWidth(display, screen); |
145 | display_height = DisplayHeight(display, screen); |
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146 | printf(PFX "display is %dx%d\n", display_width, display_height); |
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147 | |
477ba3f2 |
148 | g_xstuff.window = win = g_xstuff.pXCreateSimpleWindow(display, |
149 | RootWindow(display, screen), 0, 0, display_width, display_height, |
150 | 0, BlackPixel(display, screen), BlackPixel(display, screen)); |
b2c5ee47 |
151 | |
152 | attributes.override_redirect = True; |
838a76d4 |
153 | attributes.cursor = transparent_cursor(&g_xstuff, display, win); |
154 | g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes); |
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155 | |
477ba3f2 |
156 | g_xstuff.pXStoreName(display, win, window_title); |
157 | g_xstuff.pXSelectInput(display, win, ExposureMask | FocusChangeMask |
158 | | KeyPressMask | KeyReleaseMask | ButtonPressMask |
159 | | ButtonReleaseMask | PointerMotionMask | PropertyChangeMask); |
838a76d4 |
160 | g_xstuff.pXMapWindow(display, win); |
161 | g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime); |
162 | g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL); |
b2c5ee47 |
163 | // XSetIOErrorHandler |
164 | |
477ba3f2 |
165 | // we don't know when event dispatch will be called, so sync now |
166 | g_xstuff.pXSync(display, False); |
167 | |
838a76d4 |
168 | return 0; |
169 | fail2: |
170 | dlclose(x11lib); |
171 | fail: |
172 | g_xstuff.display = NULL; |
173 | fprintf(stderr, "x11 handling disabled.\n"); |
174 | return -1; |
175 | } |
176 | |
c7b78b94 |
177 | static void x11h_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed), |
178 | int (*mouseb_cb)(void *cb_arg, int x, int y, int button, int is_pressed), |
179 | int (*mousem_cb)(void *cb_arg, int x, int y), |
180 | void *cb_arg) |
838a76d4 |
181 | { |
182 | XEvent evt; |
c7b78b94 |
183 | int keysym; |
838a76d4 |
184 | |
185 | while (g_xstuff.pXPending(g_xstuff.display)) |
b2c5ee47 |
186 | { |
838a76d4 |
187 | g_xstuff.pXNextEvent(g_xstuff.display, &evt); |
188 | switch (evt.type) |
b2c5ee47 |
189 | { |
c7b78b94 |
190 | case Expose: |
191 | while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt)) |
192 | ; |
193 | break; |
194 | |
195 | case KeyPress: |
196 | keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0); |
197 | if (key_cb != NULL) |
198 | key_cb(cb_arg, keysym, 1); |
199 | break; |
200 | |
201 | case KeyRelease: |
202 | keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0); |
203 | if (key_cb != NULL) |
204 | key_cb(cb_arg, keysym, 0); |
205 | break; |
206 | |
207 | case ButtonPress: |
208 | if (mouseb_cb != NULL) |
209 | mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y, |
210 | evt.xbutton.button, 1); |
211 | break; |
212 | |
213 | case ButtonRelease: |
214 | if (mouseb_cb != NULL) |
215 | mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y, |
216 | evt.xbutton.button, 0); |
217 | break; |
218 | |
219 | case MotionNotify: |
220 | if (mousem_cb != NULL) |
221 | mousem_cb(cb_arg, evt.xmotion.x, evt.xmotion.y); |
222 | break; |
b2c5ee47 |
223 | } |
224 | } |
b2c5ee47 |
225 | } |
226 | |
477ba3f2 |
227 | static void x11h_wait_vmstate(void) |
228 | { |
229 | Atom wm_state = g_xstuff.pXInternAtom(g_xstuff.display, "WM_STATE", False); |
230 | XEvent evt; |
231 | int i; |
232 | |
233 | usleep(20000); |
234 | |
235 | for (i = 0; i < 20; i++) { |
236 | while (g_xstuff.pXPending(g_xstuff.display)) { |
237 | g_xstuff.pXNextEvent(g_xstuff.display, &evt); |
238 | // printf("w event %d\n", evt.type); |
239 | if (evt.type == PropertyNotify && evt.xproperty.atom == wm_state) |
240 | return; |
241 | } |
242 | usleep(200000); |
243 | } |
244 | |
245 | fprintf(stderr, PFX "timeout waiting for wm_state change\n"); |
246 | } |
247 | |
248 | static int x11h_minimize(void) |
249 | { |
250 | XSetWindowAttributes attributes; |
251 | Display *display = g_xstuff.display; |
252 | Window window = g_xstuff.window; |
253 | int screen = DefaultScreen(g_xstuff.display); |
254 | int display_width, display_height; |
255 | XWMHints wm_hints; |
256 | XEvent evt; |
257 | |
258 | g_xstuff.pXWithdrawWindow(display, window, screen); |
259 | |
260 | attributes.override_redirect = False; |
261 | g_xstuff.pXChangeWindowAttributes(display, window, |
262 | CWOverrideRedirect, &attributes); |
263 | |
264 | wm_hints.flags = StateHint; |
265 | wm_hints.initial_state = IconicState; |
266 | g_xstuff.pXSetWMHints(display, window, &wm_hints); |
267 | |
268 | g_xstuff.pXMapWindow(display, window); |
269 | |
270 | while (g_xstuff.pXNextEvent(display, &evt) == 0) |
271 | { |
272 | // printf("m event %d\n", evt.type); |
273 | switch (evt.type) |
274 | { |
275 | case FocusIn: |
276 | goto out; |
277 | default: |
278 | break; |
279 | } |
280 | } |
281 | |
282 | out: |
283 | g_xstuff.pXWithdrawWindow(display, window, screen); |
284 | |
285 | // must wait for some magic vmstate property change before setting override_redirect |
286 | x11h_wait_vmstate(); |
287 | |
288 | attributes.override_redirect = True; |
289 | g_xstuff.pXChangeWindowAttributes(display, window, |
290 | CWOverrideRedirect, &attributes); |
291 | |
292 | // fixup window after resize on override_redirect loss |
293 | display_width = DisplayWidth(display, screen); |
294 | display_height = DisplayHeight(display, screen); |
295 | g_xstuff.pXMoveResizeWindow(display, window, 0, 0, display_width, display_height); |
296 | |
297 | g_xstuff.pXMapWindow(display, window); |
298 | g_xstuff.pXGrabKeyboard(display, window, False, GrabModeAsync, GrabModeAsync, CurrentTime); |
299 | g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL); |
300 | |
301 | // we don't know when event dispatch will be called, so sync now |
302 | g_xstuff.pXSync(display, False); |
303 | |
304 | return 0; |
305 | } |
306 | |
f6eaae4f |
307 | static struct termios g_kbd_termios_saved; |
3797b7de |
308 | static int g_kbdfd = -1; |
f6eaae4f |
309 | |
838a76d4 |
310 | static int tty_init(void) |
f6eaae4f |
311 | { |
312 | struct termios kbd_termios; |
f6eaae4f |
313 | int mode; |
314 | |
315 | g_kbdfd = open("/dev/tty", O_RDWR); |
316 | if (g_kbdfd == -1) { |
317 | perror(PFX "open /dev/tty"); |
838a76d4 |
318 | return -1; |
f6eaae4f |
319 | } |
320 | |
321 | if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) { |
322 | perror(PFX "(not hiding FB): KDGETMODE"); |
323 | goto fail; |
324 | } |
325 | |
326 | if (tcgetattr(g_kbdfd, &kbd_termios) == -1) { |
327 | perror(PFX "tcgetattr"); |
328 | goto fail; |
329 | } |
330 | |
209a7eff |
331 | g_kbd_termios_saved = kbd_termios; |
f6eaae4f |
332 | kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG); |
333 | kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON); |
334 | kbd_termios.c_cc[VMIN] = 0; |
335 | kbd_termios.c_cc[VTIME] = 0; |
336 | |
337 | if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) { |
338 | perror(PFX "tcsetattr"); |
339 | goto fail; |
340 | } |
341 | |
342 | if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) { |
343 | perror(PFX "KDSETMODE KD_GRAPHICS"); |
344 | tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved); |
345 | goto fail; |
346 | } |
347 | |
838a76d4 |
348 | return 0; |
f6eaae4f |
349 | |
350 | fail: |
351 | close(g_kbdfd); |
352 | g_kbdfd = -1; |
838a76d4 |
353 | return -1; |
f6eaae4f |
354 | } |
355 | |
838a76d4 |
356 | static void tty_end(void) |
f6eaae4f |
357 | { |
358 | if (g_kbdfd < 0) |
359 | return; |
360 | |
361 | if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1) |
362 | perror(PFX "KDSETMODE KD_TEXT"); |
363 | |
364 | if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1) |
365 | perror(PFX "tcsetattr"); |
366 | |
f6eaae4f |
367 | close(g_kbdfd); |
368 | g_kbdfd = -1; |
369 | } |
370 | |
477ba3f2 |
371 | int xenv_init(int *have_mouse_events, const char *window_title) |
b2c5ee47 |
372 | { |
c7b78b94 |
373 | int have_mouse = 0; |
b2c5ee47 |
374 | int ret; |
375 | |
477ba3f2 |
376 | ret = x11h_init(window_title); |
c7b78b94 |
377 | if (ret == 0) { |
378 | have_mouse = 1; |
379 | goto out; |
380 | } |
b2c5ee47 |
381 | |
838a76d4 |
382 | ret = tty_init(); |
383 | if (ret == 0) |
c7b78b94 |
384 | goto out; |
f6eaae4f |
385 | |
838a76d4 |
386 | fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n"); |
c7b78b94 |
387 | ret = -1; |
388 | out: |
389 | if (have_mouse_events != NULL) |
390 | *have_mouse_events = have_mouse; |
391 | return ret; |
b2c5ee47 |
392 | } |
393 | |
c7b78b94 |
394 | int xenv_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed), |
395 | int (*mouseb_cb)(void *cb_arg, int x, int y, int button, int is_pressed), |
396 | int (*mousem_cb)(void *cb_arg, int x, int y), |
397 | void *cb_arg) |
f6eaae4f |
398 | { |
c7b78b94 |
399 | if (g_xstuff.display) { |
400 | x11h_update(key_cb, mouseb_cb, mousem_cb, cb_arg); |
401 | return 0; |
402 | } |
f6eaae4f |
403 | |
838a76d4 |
404 | // TODO: read tty? |
405 | return -1; |
f6eaae4f |
406 | } |
407 | |
477ba3f2 |
408 | /* blocking minimize until user maximizes again */ |
409 | int xenv_minimize(void) |
410 | { |
411 | int ret; |
412 | |
413 | if (g_xstuff.display) { |
414 | xenv_update(NULL, NULL, NULL, NULL); |
415 | ret = x11h_minimize(); |
416 | xenv_update(NULL, NULL, NULL, NULL); |
417 | return ret; |
418 | } |
419 | |
420 | return -1; |
421 | } |
422 | |
838a76d4 |
423 | void xenv_finish(void) |
b2c5ee47 |
424 | { |
838a76d4 |
425 | // TODO: cleanup X? |
426 | tty_end(); |
b2c5ee47 |
427 | } |
477ba3f2 |
428 | |
429 | #if 0 |
430 | int main() |
431 | { |
432 | int i, r, d; |
433 | |
434 | xenv_init("just a test"); |
435 | |
436 | for (i = 0; i < 5; i++) { |
437 | while ((r = xenv_update(&d)) > 0) |
438 | printf("%d %x %d\n", d, r, r); |
439 | sleep(1); |
440 | |
441 | if (i == 1) |
442 | xenv_minimize(); |
443 | printf("ll %d\n", i); |
444 | } |
445 | |
446 | printf("xenv_finish..\n"); |
447 | xenv_finish(); |
448 | |
449 | return 0; |
450 | } |
451 | #endif |