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1 | /* |
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2 | * (C) GraÅžvydas "notaz" Ignotas, 2009-2012 |
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3 | * |
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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. |
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8 | * See the COPYING file in the top-level directory. |
9 | */ |
10 | |
11 | #include <stdio.h> |
12 | #include <string.h> |
13 | #include <pthread.h> |
14 | |
15 | #include <dlfcn.h> |
16 | #include <X11/Xlib.h> |
17 | #include <X11/Xutil.h> |
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18 | #include <X11/XKBlib.h> |
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19 | |
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 | |
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28 | #include "xenv.h" |
29 | |
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30 | #define PFX "xenv: " |
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31 | |
32 | #define FPTR(f) typeof(f) * p##f |
33 | #define FPTR_LINK(xf, dl, f) { \ |
34 | xf.p##f = dlsym(dl, #f); \ |
35 | if (xf.p##f == NULL) { \ |
36 | fprintf(stderr, "missing symbol: %s\n", #f); \ |
37 | goto fail; \ |
38 | } \ |
39 | } |
40 | |
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41 | struct xstuff { |
42 | Display *display; |
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43 | Window window; |
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44 | FPTR(XCreateBitmapFromData); |
45 | FPTR(XCreatePixmapCursor); |
46 | FPTR(XFreePixmap); |
47 | FPTR(XOpenDisplay); |
48 | FPTR(XDisplayName); |
49 | FPTR(XCloseDisplay); |
50 | FPTR(XCreateSimpleWindow); |
51 | FPTR(XChangeWindowAttributes); |
52 | FPTR(XSelectInput); |
53 | FPTR(XMapWindow); |
54 | FPTR(XNextEvent); |
55 | FPTR(XCheckTypedEvent); |
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56 | FPTR(XWithdrawWindow); |
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57 | FPTR(XGrabKeyboard); |
58 | FPTR(XPending); |
59 | FPTR(XLookupKeysym); |
60 | FPTR(XkbSetDetectableAutoRepeat); |
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61 | FPTR(XkbKeycodeToKeysym); |
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62 | FPTR(XStoreName); |
63 | FPTR(XIconifyWindow); |
64 | FPTR(XMoveResizeWindow); |
65 | FPTR(XInternAtom); |
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66 | FPTR(XAllocWMHints); |
67 | FPTR(XGetWMHints); |
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68 | FPTR(XSetWMHints); |
69 | FPTR(XSync); |
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70 | FPTR(XFree); |
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71 | }; |
72 | |
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73 | static struct xstuff g_xstuff; |
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74 | |
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75 | static Cursor transparent_cursor(struct xstuff *xf, Display *display, Window win) |
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76 | { |
77 | Cursor cursor; |
78 | Pixmap pix; |
79 | XColor dummy; |
80 | char d = 0; |
81 | |
82 | memset(&dummy, 0, sizeof(dummy)); |
83 | pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1); |
84 | cursor = xf->pXCreatePixmapCursor(display, pix, pix, |
85 | &dummy, &dummy, 0, 0); |
86 | xf->pXFreePixmap(display, pix); |
87 | return cursor; |
88 | } |
89 | |
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90 | static int x11h_init(int *xenv_flags, const char *window_title) |
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91 | { |
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92 | unsigned int display_width, display_height; |
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93 | Display *display; |
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94 | XSetWindowAttributes attributes; |
95 | Window win; |
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96 | Visual *visual; |
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97 | long evt_mask; |
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98 | void *x11lib; |
99 | int screen; |
100 | |
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101 | memset(&g_xstuff, 0, sizeof(g_xstuff)); |
83b5751b |
102 | x11lib = dlopen("libX11.so.6", RTLD_LAZY); |
103 | if (x11lib == NULL) { |
104 | fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror()); |
105 | goto fail; |
106 | } |
f9b3f440 |
107 | FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData); |
108 | FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor); |
109 | FPTR_LINK(g_xstuff, x11lib, XFreePixmap); |
110 | FPTR_LINK(g_xstuff, x11lib, XOpenDisplay); |
111 | FPTR_LINK(g_xstuff, x11lib, XDisplayName); |
112 | FPTR_LINK(g_xstuff, x11lib, XCloseDisplay); |
113 | FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow); |
114 | FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes); |
115 | FPTR_LINK(g_xstuff, x11lib, XSelectInput); |
116 | FPTR_LINK(g_xstuff, x11lib, XMapWindow); |
117 | FPTR_LINK(g_xstuff, x11lib, XNextEvent); |
118 | FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent); |
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119 | FPTR_LINK(g_xstuff, x11lib, XWithdrawWindow); |
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120 | FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard); |
121 | FPTR_LINK(g_xstuff, x11lib, XPending); |
122 | FPTR_LINK(g_xstuff, x11lib, XLookupKeysym); |
123 | FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat); |
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124 | FPTR_LINK(g_xstuff, x11lib, XkbKeycodeToKeysym); |
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125 | FPTR_LINK(g_xstuff, x11lib, XStoreName); |
126 | FPTR_LINK(g_xstuff, x11lib, XIconifyWindow); |
127 | FPTR_LINK(g_xstuff, x11lib, XMoveResizeWindow); |
128 | FPTR_LINK(g_xstuff, x11lib, XInternAtom); |
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129 | FPTR_LINK(g_xstuff, x11lib, XAllocWMHints); |
130 | FPTR_LINK(g_xstuff, x11lib, XGetWMHints); |
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131 | FPTR_LINK(g_xstuff, x11lib, XSetWMHints); |
132 | FPTR_LINK(g_xstuff, x11lib, XSync); |
7eac0547 |
133 | FPTR_LINK(g_xstuff, x11lib, XFree); |
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134 | |
135 | //XInitThreads(); |
136 | |
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137 | g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL); |
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138 | if (display == NULL) |
139 | { |
140 | fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n", |
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141 | g_xstuff.pXDisplayName(NULL)); |
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142 | goto fail2; |
143 | } |
144 | |
145 | visual = DefaultVisual(display, 0); |
146 | if (visual->class != TrueColor) |
147 | fprintf(stderr, PFX "warning: non true color visual\n"); |
148 | |
149 | printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display), |
150 | VendorRelease(display), DisplayString(display), ProtocolVersion(display), |
151 | ProtocolRevision(display)); |
152 | |
153 | screen = DefaultScreen(display); |
154 | |
155 | display_width = DisplayWidth(display, screen); |
156 | display_height = DisplayHeight(display, screen); |
157 | printf(PFX "display is %dx%d\n", display_width, display_height); |
158 | |
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159 | g_xstuff.window = win = g_xstuff.pXCreateSimpleWindow(display, |
160 | RootWindow(display, screen), 0, 0, display_width, display_height, |
161 | 0, BlackPixel(display, screen), BlackPixel(display, screen)); |
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162 | |
163 | attributes.override_redirect = True; |
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164 | attributes.cursor = transparent_cursor(&g_xstuff, display, win); |
165 | g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes); |
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166 | |
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167 | if (window_title != NULL) |
168 | g_xstuff.pXStoreName(display, win, window_title); |
169 | evt_mask = ExposureMask | FocusChangeMask | PropertyChangeMask; |
170 | if (xenv_flags && (*xenv_flags & XENV_CAP_KEYS)) |
171 | evt_mask |= KeyPressMask | KeyReleaseMask; |
172 | if (xenv_flags && (*xenv_flags & XENV_CAP_MOUSE)) |
173 | evt_mask |= ButtonPressMask | ButtonReleaseMask | PointerMotionMask; |
174 | g_xstuff.pXSelectInput(display, win, evt_mask); |
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175 | g_xstuff.pXMapWindow(display, win); |
176 | g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime); |
177 | g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL); |
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178 | // XSetIOErrorHandler |
179 | |
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180 | // we don't know when event dispatch will be called, so sync now |
181 | g_xstuff.pXSync(display, False); |
182 | |
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183 | return 0; |
184 | fail2: |
185 | dlclose(x11lib); |
186 | fail: |
187 | g_xstuff.display = NULL; |
188 | fprintf(stderr, "x11 handling disabled.\n"); |
189 | return -1; |
190 | } |
191 | |
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192 | static void x11h_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed), |
193 | int (*mouseb_cb)(void *cb_arg, int x, int y, int button, int is_pressed), |
194 | int (*mousem_cb)(void *cb_arg, int x, int y), |
195 | void *cb_arg) |
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196 | { |
197 | XEvent evt; |
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198 | int keysym; |
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199 | |
200 | while (g_xstuff.pXPending(g_xstuff.display)) |
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201 | { |
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202 | g_xstuff.pXNextEvent(g_xstuff.display, &evt); |
203 | switch (evt.type) |
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204 | { |
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205 | case Expose: |
206 | while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt)) |
207 | ; |
208 | break; |
209 | |
210 | case KeyPress: |
211 | keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0); |
212 | if (key_cb != NULL) |
213 | key_cb(cb_arg, keysym, 1); |
214 | break; |
215 | |
216 | case KeyRelease: |
217 | keysym = g_xstuff.pXLookupKeysym(&evt.xkey, 0); |
218 | if (key_cb != NULL) |
219 | key_cb(cb_arg, keysym, 0); |
220 | break; |
221 | |
222 | case ButtonPress: |
223 | if (mouseb_cb != NULL) |
224 | mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y, |
225 | evt.xbutton.button, 1); |
226 | break; |
227 | |
228 | case ButtonRelease: |
229 | if (mouseb_cb != NULL) |
230 | mouseb_cb(cb_arg, evt.xbutton.x, evt.xbutton.y, |
231 | evt.xbutton.button, 0); |
232 | break; |
233 | |
234 | case MotionNotify: |
235 | if (mousem_cb != NULL) |
236 | mousem_cb(cb_arg, evt.xmotion.x, evt.xmotion.y); |
237 | break; |
83b5751b |
238 | } |
239 | } |
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240 | } |
241 | |
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242 | static void x11h_wait_vmstate(void) |
243 | { |
244 | Atom wm_state = g_xstuff.pXInternAtom(g_xstuff.display, "WM_STATE", False); |
245 | XEvent evt; |
246 | int i; |
247 | |
248 | usleep(20000); |
249 | |
250 | for (i = 0; i < 20; i++) { |
251 | while (g_xstuff.pXPending(g_xstuff.display)) { |
252 | g_xstuff.pXNextEvent(g_xstuff.display, &evt); |
253 | // printf("w event %d\n", evt.type); |
254 | if (evt.type == PropertyNotify && evt.xproperty.atom == wm_state) |
255 | return; |
256 | } |
257 | usleep(200000); |
258 | } |
259 | |
260 | fprintf(stderr, PFX "timeout waiting for wm_state change\n"); |
261 | } |
262 | |
263 | static int x11h_minimize(void) |
264 | { |
265 | XSetWindowAttributes attributes; |
266 | Display *display = g_xstuff.display; |
267 | Window window = g_xstuff.window; |
268 | int screen = DefaultScreen(g_xstuff.display); |
269 | int display_width, display_height; |
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270 | XWMHints *wm_hints; |
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271 | XEvent evt; |
272 | |
273 | g_xstuff.pXWithdrawWindow(display, window, screen); |
274 | |
275 | attributes.override_redirect = False; |
276 | g_xstuff.pXChangeWindowAttributes(display, window, |
277 | CWOverrideRedirect, &attributes); |
278 | |
7eac0547 |
279 | wm_hints = g_xstuff.pXGetWMHints(display, window); |
280 | if (wm_hints == NULL) { |
281 | wm_hints = XAllocWMHints(); |
282 | wm_hints->flags = 0; |
283 | } |
284 | wm_hints->flags |= StateHint; |
285 | wm_hints->initial_state = IconicState; |
286 | g_xstuff.pXSetWMHints(display, window, wm_hints); |
287 | g_xstuff.pXFree(wm_hints); |
288 | wm_hints = NULL; |
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289 | |
290 | g_xstuff.pXMapWindow(display, window); |
291 | |
292 | while (g_xstuff.pXNextEvent(display, &evt) == 0) |
293 | { |
294 | // printf("m event %d\n", evt.type); |
295 | switch (evt.type) |
296 | { |
297 | case FocusIn: |
298 | goto out; |
299 | default: |
300 | break; |
301 | } |
302 | } |
303 | |
304 | out: |
305 | g_xstuff.pXWithdrawWindow(display, window, screen); |
306 | |
307 | // must wait for some magic vmstate property change before setting override_redirect |
308 | x11h_wait_vmstate(); |
309 | |
310 | attributes.override_redirect = True; |
311 | g_xstuff.pXChangeWindowAttributes(display, window, |
312 | CWOverrideRedirect, &attributes); |
313 | |
314 | // fixup window after resize on override_redirect loss |
315 | display_width = DisplayWidth(display, screen); |
316 | display_height = DisplayHeight(display, screen); |
317 | g_xstuff.pXMoveResizeWindow(display, window, 0, 0, display_width, display_height); |
318 | |
319 | g_xstuff.pXMapWindow(display, window); |
320 | g_xstuff.pXGrabKeyboard(display, window, False, GrabModeAsync, GrabModeAsync, CurrentTime); |
321 | g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL); |
322 | |
323 | // we don't know when event dispatch will be called, so sync now |
324 | g_xstuff.pXSync(display, False); |
325 | |
326 | return 0; |
327 | } |
328 | |
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329 | static struct termios g_kbd_termios_saved; |
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330 | static int g_kbdfd = -1; |
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331 | |
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332 | static int tty_init(void) |
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333 | { |
334 | struct termios kbd_termios; |
335 | int mode; |
336 | |
337 | g_kbdfd = open("/dev/tty", O_RDWR); |
338 | if (g_kbdfd == -1) { |
339 | perror(PFX "open /dev/tty"); |
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340 | return -1; |
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341 | } |
342 | |
343 | if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) { |
344 | perror(PFX "(not hiding FB): KDGETMODE"); |
345 | goto fail; |
346 | } |
347 | |
348 | if (tcgetattr(g_kbdfd, &kbd_termios) == -1) { |
349 | perror(PFX "tcgetattr"); |
350 | goto fail; |
351 | } |
352 | |
353 | g_kbd_termios_saved = kbd_termios; |
354 | kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG); |
355 | kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON); |
356 | kbd_termios.c_cc[VMIN] = 0; |
357 | kbd_termios.c_cc[VTIME] = 0; |
358 | |
359 | if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) { |
360 | perror(PFX "tcsetattr"); |
361 | goto fail; |
362 | } |
363 | |
364 | if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) { |
365 | perror(PFX "KDSETMODE KD_GRAPHICS"); |
366 | tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved); |
367 | goto fail; |
368 | } |
369 | |
f9b3f440 |
370 | return 0; |
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371 | |
372 | fail: |
373 | close(g_kbdfd); |
374 | g_kbdfd = -1; |
f9b3f440 |
375 | return -1; |
83b5751b |
376 | } |
377 | |
f9b3f440 |
378 | static void tty_end(void) |
83b5751b |
379 | { |
380 | if (g_kbdfd < 0) |
381 | return; |
382 | |
383 | if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1) |
384 | perror(PFX "KDSETMODE KD_TEXT"); |
385 | |
386 | if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1) |
387 | perror(PFX "tcsetattr"); |
388 | |
389 | close(g_kbdfd); |
390 | g_kbdfd = -1; |
391 | } |
392 | |
090bcb85 |
393 | int xenv_init(int *xenv_flags, const char *window_title) |
83b5751b |
394 | { |
83b5751b |
395 | int ret; |
396 | |
090bcb85 |
397 | ret = x11h_init(xenv_flags, window_title); |
398 | if (ret == 0) |
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399 | goto out; |
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400 | |
090bcb85 |
401 | if (xenv_flags != NULL) |
402 | *xenv_flags &= ~(XENV_CAP_KEYS | XENV_CAP_MOUSE); /* TODO? */ |
f9b3f440 |
403 | ret = tty_init(); |
404 | if (ret == 0) |
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405 | goto out; |
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406 | |
f9b3f440 |
407 | fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n"); |
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408 | ret = -1; |
409 | out: |
e1837b2c |
410 | return ret; |
83b5751b |
411 | } |
412 | |
e1837b2c |
413 | int xenv_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed), |
414 | int (*mouseb_cb)(void *cb_arg, int x, int y, int button, int is_pressed), |
415 | int (*mousem_cb)(void *cb_arg, int x, int y), |
416 | void *cb_arg) |
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417 | { |
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418 | if (g_xstuff.display) { |
419 | x11h_update(key_cb, mouseb_cb, mousem_cb, cb_arg); |
420 | return 0; |
421 | } |
83b5751b |
422 | |
f9b3f440 |
423 | // TODO: read tty? |
424 | return -1; |
83b5751b |
425 | } |
426 | |
090bcb85 |
427 | /* blocking minimize until user maximizes again */ |
428 | int xenv_minimize(void) |
429 | { |
430 | int ret; |
431 | |
432 | if (g_xstuff.display) { |
433 | xenv_update(NULL, NULL, NULL, NULL); |
434 | ret = x11h_minimize(); |
435 | xenv_update(NULL, NULL, NULL, NULL); |
436 | return ret; |
437 | } |
438 | |
439 | return -1; |
440 | } |
441 | |
89df2746 |
442 | int xenv_keycode_to_keysym(int kc, int shift) |
443 | { |
444 | if (g_xstuff.display) |
445 | return g_xstuff.pXkbKeycodeToKeysym(g_xstuff.display, |
446 | kc, 0, shift); |
447 | |
448 | return -1; |
449 | } |
450 | |
ee7e6b2d |
451 | int xenv_get_window(void **display, int *screen, void **window) |
452 | { |
453 | *display = *window = NULL; |
454 | *screen = 0; |
455 | if (g_xstuff.display && g_xstuff.window) { |
456 | *display = g_xstuff.display; |
457 | *screen = DefaultScreen(g_xstuff.display); |
458 | *window = (void *)g_xstuff.window; |
459 | return 0; |
460 | } |
461 | |
462 | return -1; |
463 | } |
464 | |
f9b3f440 |
465 | void xenv_finish(void) |
83b5751b |
466 | { |
f9b3f440 |
467 | // TODO: cleanup X? |
468 | tty_end(); |
83b5751b |
469 | } |
090bcb85 |
470 | |
471 | #if 0 |
472 | int main() |
473 | { |
474 | int i, r, d; |
475 | |
476 | xenv_init("just a test"); |
477 | |
478 | for (i = 0; i < 5; i++) { |
479 | while ((r = xenv_update(&d)) > 0) |
480 | printf("%d %x %d\n", d, r, r); |
481 | sleep(1); |
482 | |
483 | if (i == 1) |
484 | xenv_minimize(); |
485 | printf("ll %d\n", i); |
486 | } |
487 | |
488 | printf("xenv_finish..\n"); |
489 | xenv_finish(); |
490 | |
491 | return 0; |
492 | } |
493 | #endif |