1//========================================================================
2// GLFW 3.2 X11 - www.glfw.org
3//------------------------------------------------------------------------
4// Copyright (c) 2002-2006 Marcus Geelnard
5// Copyright (c) 2006-2016 Camilla Berglund <elmindreda@glfw.org>
6//
7// This software is provided 'as-is', without any express or implied
8// warranty. In no event will the authors be held liable for any damages
9// arising from the use of this software.
10//
11// Permission is granted to anyone to use this software for any purpose,
12// including commercial applications, and to alter it and redistribute it
13// freely, subject to the following restrictions:
14//
15// 1. The origin of this software must not be misrepresented; you must not
16// claim that you wrote the original software. If you use this software
17// in a product, an acknowledgment in the product documentation would
18// be appreciated but is not required.
19//
20// 2. Altered source versions must be plainly marked as such, and must not
21// be misrepresented as being the original software.
22//
23// 3. This notice may not be removed or altered from any source
24// distribution.
25//
26//========================================================================
27
28#include "internal.h"
29
30#include <X11/Xresource.h>
31
32#include <stdlib.h>
33#include <string.h>
34#include <limits.h>
35#include <stdio.h>
36#include <locale.h>
37
38
39// Translate an X11 key code to a GLFW key code.
40//
41static int translateKeyCode(int scancode)
42{
43 int keySym;
44
45 // Valid key code range is [8,255], according to the Xlib manual
46 if (scancode < 8 || scancode > 255)
47 return GLFW_KEY_UNKNOWN;
48
49 if (_glfw.x11.xkb.available)
50 {
51 // Try secondary keysym, for numeric keypad keys
52 // Note: This way we always force "NumLock = ON", which is intentional
53 // since the returned key code should correspond to a physical
54 // location.
55 keySym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, 0, 1);
56 switch (keySym)
57 {
58 case XK_KP_0: return GLFW_KEY_KP_0;
59 case XK_KP_1: return GLFW_KEY_KP_1;
60 case XK_KP_2: return GLFW_KEY_KP_2;
61 case XK_KP_3: return GLFW_KEY_KP_3;
62 case XK_KP_4: return GLFW_KEY_KP_4;
63 case XK_KP_5: return GLFW_KEY_KP_5;
64 case XK_KP_6: return GLFW_KEY_KP_6;
65 case XK_KP_7: return GLFW_KEY_KP_7;
66 case XK_KP_8: return GLFW_KEY_KP_8;
67 case XK_KP_9: return GLFW_KEY_KP_9;
68 case XK_KP_Separator:
69 case XK_KP_Decimal: return GLFW_KEY_KP_DECIMAL;
70 case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
71 case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
72 default: break;
73 }
74
75 // Now try primary keysym for function keys (non-printable keys). These
76 // should not be layout dependent (i.e. US layout and international
77 // layouts should give the same result).
78 keySym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, 0, 0);
79 }
80 else
81 {
82 int dummy;
83 KeySym* keySyms;
84
85 keySyms = XGetKeyboardMapping(_glfw.x11.display, scancode, 1, &dummy);
86 keySym = keySyms[0];
87 XFree(keySyms);
88 }
89
90 switch (keySym)
91 {
92 case XK_Escape: return GLFW_KEY_ESCAPE;
93 case XK_Tab: return GLFW_KEY_TAB;
94 case XK_Shift_L: return GLFW_KEY_LEFT_SHIFT;
95 case XK_Shift_R: return GLFW_KEY_RIGHT_SHIFT;
96 case XK_Control_L: return GLFW_KEY_LEFT_CONTROL;
97 case XK_Control_R: return GLFW_KEY_RIGHT_CONTROL;
98 case XK_Meta_L:
99 case XK_Alt_L: return GLFW_KEY_LEFT_ALT;
100 case XK_Mode_switch: // Mapped to Alt_R on many keyboards
101 case XK_ISO_Level3_Shift: // AltGr on at least some machines
102 case XK_Meta_R:
103 case XK_Alt_R: return GLFW_KEY_RIGHT_ALT;
104 case XK_Super_L: return GLFW_KEY_LEFT_SUPER;
105 case XK_Super_R: return GLFW_KEY_RIGHT_SUPER;
106 case XK_Menu: return GLFW_KEY_MENU;
107 case XK_Num_Lock: return GLFW_KEY_NUM_LOCK;
108 case XK_Caps_Lock: return GLFW_KEY_CAPS_LOCK;
109 case XK_Print: return GLFW_KEY_PRINT_SCREEN;
110 case XK_Scroll_Lock: return GLFW_KEY_SCROLL_LOCK;
111 case XK_Pause: return GLFW_KEY_PAUSE;
112 case XK_Delete: return GLFW_KEY_DELETE;
113 case XK_BackSpace: return GLFW_KEY_BACKSPACE;
114 case XK_Return: return GLFW_KEY_ENTER;
115 case XK_Home: return GLFW_KEY_HOME;
116 case XK_End: return GLFW_KEY_END;
117 case XK_Page_Up: return GLFW_KEY_PAGE_UP;
118 case XK_Page_Down: return GLFW_KEY_PAGE_DOWN;
119 case XK_Insert: return GLFW_KEY_INSERT;
120 case XK_Left: return GLFW_KEY_LEFT;
121 case XK_Right: return GLFW_KEY_RIGHT;
122 case XK_Down: return GLFW_KEY_DOWN;
123 case XK_Up: return GLFW_KEY_UP;
124 case XK_F1: return GLFW_KEY_F1;
125 case XK_F2: return GLFW_KEY_F2;
126 case XK_F3: return GLFW_KEY_F3;
127 case XK_F4: return GLFW_KEY_F4;
128 case XK_F5: return GLFW_KEY_F5;
129 case XK_F6: return GLFW_KEY_F6;
130 case XK_F7: return GLFW_KEY_F7;
131 case XK_F8: return GLFW_KEY_F8;
132 case XK_F9: return GLFW_KEY_F9;
133 case XK_F10: return GLFW_KEY_F10;
134 case XK_F11: return GLFW_KEY_F11;
135 case XK_F12: return GLFW_KEY_F12;
136 case XK_F13: return GLFW_KEY_F13;
137 case XK_F14: return GLFW_KEY_F14;
138 case XK_F15: return GLFW_KEY_F15;
139 case XK_F16: return GLFW_KEY_F16;
140 case XK_F17: return GLFW_KEY_F17;
141 case XK_F18: return GLFW_KEY_F18;
142 case XK_F19: return GLFW_KEY_F19;
143 case XK_F20: return GLFW_KEY_F20;
144 case XK_F21: return GLFW_KEY_F21;
145 case XK_F22: return GLFW_KEY_F22;
146 case XK_F23: return GLFW_KEY_F23;
147 case XK_F24: return GLFW_KEY_F24;
148 case XK_F25: return GLFW_KEY_F25;
149
150 // Numeric keypad
151 case XK_KP_Divide: return GLFW_KEY_KP_DIVIDE;
152 case XK_KP_Multiply: return GLFW_KEY_KP_MULTIPLY;
153 case XK_KP_Subtract: return GLFW_KEY_KP_SUBTRACT;
154 case XK_KP_Add: return GLFW_KEY_KP_ADD;
155
156 // These should have been detected in secondary keysym test above!
157 case XK_KP_Insert: return GLFW_KEY_KP_0;
158 case XK_KP_End: return GLFW_KEY_KP_1;
159 case XK_KP_Down: return GLFW_KEY_KP_2;
160 case XK_KP_Page_Down: return GLFW_KEY_KP_3;
161 case XK_KP_Left: return GLFW_KEY_KP_4;
162 case XK_KP_Right: return GLFW_KEY_KP_6;
163 case XK_KP_Home: return GLFW_KEY_KP_7;
164 case XK_KP_Up: return GLFW_KEY_KP_8;
165 case XK_KP_Page_Up: return GLFW_KEY_KP_9;
166 case XK_KP_Delete: return GLFW_KEY_KP_DECIMAL;
167 case XK_KP_Equal: return GLFW_KEY_KP_EQUAL;
168 case XK_KP_Enter: return GLFW_KEY_KP_ENTER;
169
170 // Last resort: Check for printable keys (should not happen if the XKB
171 // extension is available). This will give a layout dependent mapping
172 // (which is wrong, and we may miss some keys, especially on non-US
173 // keyboards), but it's better than nothing...
174 case XK_a: return GLFW_KEY_A;
175 case XK_b: return GLFW_KEY_B;
176 case XK_c: return GLFW_KEY_C;
177 case XK_d: return GLFW_KEY_D;
178 case XK_e: return GLFW_KEY_E;
179 case XK_f: return GLFW_KEY_F;
180 case XK_g: return GLFW_KEY_G;
181 case XK_h: return GLFW_KEY_H;
182 case XK_i: return GLFW_KEY_I;
183 case XK_j: return GLFW_KEY_J;
184 case XK_k: return GLFW_KEY_K;
185 case XK_l: return GLFW_KEY_L;
186 case XK_m: return GLFW_KEY_M;
187 case XK_n: return GLFW_KEY_N;
188 case XK_o: return GLFW_KEY_O;
189 case XK_p: return GLFW_KEY_P;
190 case XK_q: return GLFW_KEY_Q;
191 case XK_r: return GLFW_KEY_R;
192 case XK_s: return GLFW_KEY_S;
193 case XK_t: return GLFW_KEY_T;
194 case XK_u: return GLFW_KEY_U;
195 case XK_v: return GLFW_KEY_V;
196 case XK_w: return GLFW_KEY_W;
197 case XK_x: return GLFW_KEY_X;
198 case XK_y: return GLFW_KEY_Y;
199 case XK_z: return GLFW_KEY_Z;
200 case XK_1: return GLFW_KEY_1;
201 case XK_2: return GLFW_KEY_2;
202 case XK_3: return GLFW_KEY_3;
203 case XK_4: return GLFW_KEY_4;
204 case XK_5: return GLFW_KEY_5;
205 case XK_6: return GLFW_KEY_6;
206 case XK_7: return GLFW_KEY_7;
207 case XK_8: return GLFW_KEY_8;
208 case XK_9: return GLFW_KEY_9;
209 case XK_0: return GLFW_KEY_0;
210 case XK_space: return GLFW_KEY_SPACE;
211 case XK_minus: return GLFW_KEY_MINUS;
212 case XK_equal: return GLFW_KEY_EQUAL;
213 case XK_bracketleft: return GLFW_KEY_LEFT_BRACKET;
214 case XK_bracketright: return GLFW_KEY_RIGHT_BRACKET;
215 case XK_backslash: return GLFW_KEY_BACKSLASH;
216 case XK_semicolon: return GLFW_KEY_SEMICOLON;
217 case XK_apostrophe: return GLFW_KEY_APOSTROPHE;
218 case XK_grave: return GLFW_KEY_GRAVE_ACCENT;
219 case XK_comma: return GLFW_KEY_COMMA;
220 case XK_period: return GLFW_KEY_PERIOD;
221 case XK_slash: return GLFW_KEY_SLASH;
222 case XK_less: return GLFW_KEY_WORLD_1; // At least in some layouts...
223 default: break;
224 }
225
226 // No matching translation was found
227 return GLFW_KEY_UNKNOWN;
228}
229
230// Create key code translation tables
231//
232static void createKeyTables(void)
233{
234 int scancode, key;
235
236 memset(_glfw.x11.publicKeys, -1, sizeof(_glfw.x11.publicKeys));
237 memset(_glfw.x11.nativeKeys, -1, sizeof(_glfw.x11.nativeKeys));
238
239 if (_glfw.x11.xkb.available)
240 {
241 // Use XKB to determine physical key locations independently of the current
242 // keyboard layout
243
244 char name[XkbKeyNameLength + 1];
245 XkbDescPtr desc = XkbGetMap(_glfw.x11.display, 0, XkbUseCoreKbd);
246 XkbGetNames(_glfw.x11.display, XkbKeyNamesMask, desc);
247
248 // Find the X11 key code -> GLFW key code mapping
249 for (scancode = desc->min_key_code; scancode <= desc->max_key_code; scancode++)
250 {
251 memcpy(name, desc->names->keys[scancode].name, XkbKeyNameLength);
252 name[XkbKeyNameLength] = '\0';
253
254 // Map the key name to a GLFW key code. Note: We only map printable
255 // keys here, and we use the US keyboard layout. The rest of the
256 // keys (function keys) are mapped using traditional KeySym
257 // translations.
258 if (strcmp(name, "TLDE") == 0) key = GLFW_KEY_GRAVE_ACCENT;
259 else if (strcmp(name, "AE01") == 0) key = GLFW_KEY_1;
260 else if (strcmp(name, "AE02") == 0) key = GLFW_KEY_2;
261 else if (strcmp(name, "AE03") == 0) key = GLFW_KEY_3;
262 else if (strcmp(name, "AE04") == 0) key = GLFW_KEY_4;
263 else if (strcmp(name, "AE05") == 0) key = GLFW_KEY_5;
264 else if (strcmp(name, "AE06") == 0) key = GLFW_KEY_6;
265 else if (strcmp(name, "AE07") == 0) key = GLFW_KEY_7;
266 else if (strcmp(name, "AE08") == 0) key = GLFW_KEY_8;
267 else if (strcmp(name, "AE09") == 0) key = GLFW_KEY_9;
268 else if (strcmp(name, "AE10") == 0) key = GLFW_KEY_0;
269 else if (strcmp(name, "AE11") == 0) key = GLFW_KEY_MINUS;
270 else if (strcmp(name, "AE12") == 0) key = GLFW_KEY_EQUAL;
271 else if (strcmp(name, "AD01") == 0) key = GLFW_KEY_Q;
272 else if (strcmp(name, "AD02") == 0) key = GLFW_KEY_W;
273 else if (strcmp(name, "AD03") == 0) key = GLFW_KEY_E;
274 else if (strcmp(name, "AD04") == 0) key = GLFW_KEY_R;
275 else if (strcmp(name, "AD05") == 0) key = GLFW_KEY_T;
276 else if (strcmp(name, "AD06") == 0) key = GLFW_KEY_Y;
277 else if (strcmp(name, "AD07") == 0) key = GLFW_KEY_U;
278 else if (strcmp(name, "AD08") == 0) key = GLFW_KEY_I;
279 else if (strcmp(name, "AD09") == 0) key = GLFW_KEY_O;
280 else if (strcmp(name, "AD10") == 0) key = GLFW_KEY_P;
281 else if (strcmp(name, "AD11") == 0) key = GLFW_KEY_LEFT_BRACKET;
282 else if (strcmp(name, "AD12") == 0) key = GLFW_KEY_RIGHT_BRACKET;
283 else if (strcmp(name, "AC01") == 0) key = GLFW_KEY_A;
284 else if (strcmp(name, "AC02") == 0) key = GLFW_KEY_S;
285 else if (strcmp(name, "AC03") == 0) key = GLFW_KEY_D;
286 else if (strcmp(name, "AC04") == 0) key = GLFW_KEY_F;
287 else if (strcmp(name, "AC05") == 0) key = GLFW_KEY_G;
288 else if (strcmp(name, "AC06") == 0) key = GLFW_KEY_H;
289 else if (strcmp(name, "AC07") == 0) key = GLFW_KEY_J;
290 else if (strcmp(name, "AC08") == 0) key = GLFW_KEY_K;
291 else if (strcmp(name, "AC09") == 0) key = GLFW_KEY_L;
292 else if (strcmp(name, "AC10") == 0) key = GLFW_KEY_SEMICOLON;
293 else if (strcmp(name, "AC11") == 0) key = GLFW_KEY_APOSTROPHE;
294 else if (strcmp(name, "AB01") == 0) key = GLFW_KEY_Z;
295 else if (strcmp(name, "AB02") == 0) key = GLFW_KEY_X;
296 else if (strcmp(name, "AB03") == 0) key = GLFW_KEY_C;
297 else if (strcmp(name, "AB04") == 0) key = GLFW_KEY_V;
298 else if (strcmp(name, "AB05") == 0) key = GLFW_KEY_B;
299 else if (strcmp(name, "AB06") == 0) key = GLFW_KEY_N;
300 else if (strcmp(name, "AB07") == 0) key = GLFW_KEY_M;
301 else if (strcmp(name, "AB08") == 0) key = GLFW_KEY_COMMA;
302 else if (strcmp(name, "AB09") == 0) key = GLFW_KEY_PERIOD;
303 else if (strcmp(name, "AB10") == 0) key = GLFW_KEY_SLASH;
304 else if (strcmp(name, "BKSL") == 0) key = GLFW_KEY_BACKSLASH;
305 else if (strcmp(name, "LSGT") == 0) key = GLFW_KEY_WORLD_1;
306 else key = GLFW_KEY_UNKNOWN;
307
308 if ((scancode >= 0) && (scancode < 256))
309 _glfw.x11.publicKeys[scancode] = key;
310 }
311
312 XkbFreeNames(desc, XkbKeyNamesMask, True);
313 XkbFreeKeyboard(desc, 0, True);
314 }
315
316 for (scancode = 0; scancode < 256; scancode++)
317 {
318 // Translate the un-translated key codes using traditional X11 KeySym
319 // lookups
320 if (_glfw.x11.publicKeys[scancode] < 0)
321 _glfw.x11.publicKeys[scancode] = translateKeyCode(scancode);
322
323 // Store the reverse translation for faster key name lookup
324 if (_glfw.x11.publicKeys[scancode] > 0)
325 _glfw.x11.nativeKeys[_glfw.x11.publicKeys[scancode]] = scancode;
326 }
327}
328
329// Check whether the IM has a usable style
330//
331static GLFWbool hasUsableInputMethodStyle(void)
332{
333 unsigned int i;
334 GLFWbool found = GLFW_FALSE;
335 XIMStyles* styles = NULL;
336
337 if (XGetIMValues(_glfw.x11.im, XNQueryInputStyle, &styles, NULL) != NULL)
338 return GLFW_FALSE;
339
340 for (i = 0; i < styles->count_styles; i++)
341 {
342 if (styles->supported_styles[i] == (XIMPreeditNothing | XIMStatusNothing))
343 {
344 found = GLFW_TRUE;
345 break;
346 }
347 }
348
349 XFree(styles);
350 return found;
351}
352
353// Check whether the specified atom is supported
354//
355static Atom getSupportedAtom(Atom* supportedAtoms,
356 unsigned long atomCount,
357 const char* atomName)
358{
359 unsigned long i;
360 const Atom atom = XInternAtom(_glfw.x11.display, atomName, False);
361
362 for (i = 0; i < atomCount; i++)
363 {
364 if (supportedAtoms[i] == atom)
365 return atom;
366 }
367
368 return None;
369}
370
371// Check whether the running window manager is EWMH-compliant
372//
373static void detectEWMH(void)
374{
375 Window* windowFromRoot = NULL;
376 Window* windowFromChild = NULL;
377
378 // First we need a couple of atoms
379 const Atom supportingWmCheck =
380 XInternAtom(_glfw.x11.display, "_NET_SUPPORTING_WM_CHECK", False);
381 const Atom wmSupported =
382 XInternAtom(_glfw.x11.display, "_NET_SUPPORTED", False);
383
384 // Then we look for the _NET_SUPPORTING_WM_CHECK property of the root window
385 if (_glfwGetWindowPropertyX11(_glfw.x11.root,
386 supportingWmCheck,
387 XA_WINDOW,
388 (unsigned char**) &windowFromRoot) != 1)
389 {
390 if (windowFromRoot)
391 XFree(windowFromRoot);
392 return;
393 }
394
395 _glfwGrabErrorHandlerX11();
396
397 // It should be the ID of a child window (of the root)
398 // Then we look for the same property on the child window
399 if (_glfwGetWindowPropertyX11(*windowFromRoot,
400 supportingWmCheck,
401 XA_WINDOW,
402 (unsigned char**) &windowFromChild) != 1)
403 {
404 XFree(windowFromRoot);
405 if (windowFromChild)
406 XFree(windowFromChild);
407 return;
408 }
409
410 _glfwReleaseErrorHandlerX11();
411
412 // It should be the ID of that same child window
413 if (*windowFromRoot != *windowFromChild)
414 {
415 XFree(windowFromRoot);
416 XFree(windowFromChild);
417 return;
418 }
419
420 XFree(windowFromRoot);
421 XFree(windowFromChild);
422
423 // We are now fairly sure that an EWMH-compliant window manager is running
424
425 Atom* supportedAtoms;
426 unsigned long atomCount;
427
428 // Now we need to check the _NET_SUPPORTED property of the root window
429 // It should be a list of supported WM protocol and state atoms
430 atomCount = _glfwGetWindowPropertyX11(_glfw.x11.root,
431 wmSupported,
432 XA_ATOM,
433 (unsigned char**) &supportedAtoms);
434
435 // See which of the atoms we support that are supported by the WM
436 _glfw.x11.NET_WM_STATE =
437 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE");
438 _glfw.x11.NET_WM_STATE_ABOVE =
439 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_ABOVE");
440 _glfw.x11.NET_WM_STATE_FULLSCREEN =
441 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_FULLSCREEN");
442 _glfw.x11.NET_WM_STATE_MAXIMIZED_VERT =
443 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_VERT");
444 _glfw.x11.NET_WM_STATE_MAXIMIZED_HORZ =
445 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_STATE_MAXIMIZED_HORZ");
446 _glfw.x11.NET_WM_FULLSCREEN_MONITORS =
447 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_FULLSCREEN_MONITORS");
448 _glfw.x11.NET_WM_WINDOW_TYPE =
449 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE");
450 _glfw.x11.NET_WM_WINDOW_TYPE_NORMAL =
451 getSupportedAtom(supportedAtoms, atomCount, "_NET_WM_WINDOW_TYPE_NORMAL");
452 _glfw.x11.NET_ACTIVE_WINDOW =
453 getSupportedAtom(supportedAtoms, atomCount, "_NET_ACTIVE_WINDOW");
454 _glfw.x11.NET_FRAME_EXTENTS =
455 getSupportedAtom(supportedAtoms, atomCount, "_NET_FRAME_EXTENTS");
456 _glfw.x11.NET_REQUEST_FRAME_EXTENTS =
457 getSupportedAtom(supportedAtoms, atomCount, "_NET_REQUEST_FRAME_EXTENTS");
458
459 XFree(supportedAtoms);
460}
461
462// Initialize X11 display and look for supported X11 extensions
463//
464static GLFWbool initExtensions(void)
465{
466#if defined(_GLFW_HAS_XF86VM)
467 // Check for XF86VidMode extension
468 _glfw.x11.vidmode.available =
469 XF86VidModeQueryExtension(_glfw.x11.display,
470 &_glfw.x11.vidmode.eventBase,
471 &_glfw.x11.vidmode.errorBase);
472#endif /*_GLFW_HAS_XF86VM*/
473
474 // Check for RandR extension
475 if (XRRQueryExtension(_glfw.x11.display,
476 &_glfw.x11.randr.eventBase,
477 &_glfw.x11.randr.errorBase))
478 {
479 if (XRRQueryVersion(_glfw.x11.display,
480 &_glfw.x11.randr.major,
481 &_glfw.x11.randr.minor))
482 {
483 // The GLFW RandR path requires at least version 1.3
484 if (_glfw.x11.randr.major > 1 || _glfw.x11.randr.minor >= 3)
485 _glfw.x11.randr.available = GLFW_TRUE;
486 }
487 else
488 {
489 _glfwInputError(GLFW_PLATFORM_ERROR,
490 "X11: Failed to query RandR version");
491 }
492 }
493
494 if (_glfw.x11.randr.available)
495 {
496 XRRScreenResources* sr = XRRGetScreenResources(_glfw.x11.display,
497 _glfw.x11.root);
498
499 if (!sr->ncrtc || !XRRGetCrtcGammaSize(_glfw.x11.display, sr->crtcs[0]))
500 {
501 // This is either a headless system or an older Nvidia binary driver
502 // with broken gamma support
503 // Flag it as useless and fall back to Xf86VidMode gamma, if
504 // available
505 _glfwInputError(GLFW_PLATFORM_ERROR,
506 "X11: RandR gamma ramp support seems broken");
507 _glfw.x11.randr.gammaBroken = GLFW_TRUE;
508 }
509
510 XRRFreeScreenResources(sr);
511
512 XRRSelectInput(_glfw.x11.display, _glfw.x11.root,
513 RROutputChangeNotifyMask);
514 }
515
516 if (XineramaQueryExtension(_glfw.x11.display,
517 &_glfw.x11.xinerama.major,
518 &_glfw.x11.xinerama.minor))
519 {
520 if (XineramaIsActive(_glfw.x11.display))
521 _glfw.x11.xinerama.available = GLFW_TRUE;
522 }
523
524 // Check if Xkb is supported on this display
525 _glfw.x11.xkb.major = 1;
526 _glfw.x11.xkb.minor = 0;
527 _glfw.x11.xkb.available =
528 XkbQueryExtension(_glfw.x11.display,
529 &_glfw.x11.xkb.majorOpcode,
530 &_glfw.x11.xkb.eventBase,
531 &_glfw.x11.xkb.errorBase,
532 &_glfw.x11.xkb.major,
533 &_glfw.x11.xkb.minor);
534
535 if (_glfw.x11.xkb.available)
536 {
537 Bool supported;
538
539 if (XkbSetDetectableAutoRepeat(_glfw.x11.display, True, &supported))
540 {
541 if (supported)
542 _glfw.x11.xkb.detectable = GLFW_TRUE;
543 }
544 }
545
546 _glfw.x11.x11xcb.handle = dlopen("libX11-xcb.so", RTLD_LAZY | RTLD_GLOBAL);
547 if (_glfw.x11.x11xcb.handle)
548 {
549 _glfw.x11.x11xcb.XGetXCBConnection = (XGETXCBCONNECTION_T)
550 dlsym(_glfw.x11.x11xcb.handle, "XGetXCBConnection");
551 }
552
553 // Update the key code LUT
554 // FIXME: We should listen to XkbMapNotify events to track changes to
555 // the keyboard mapping.
556 createKeyTables();
557
558 // Detect whether an EWMH-conformant window manager is running
559 detectEWMH();
560
561 // String format atoms
562 _glfw.x11.NULL_ = XInternAtom(_glfw.x11.display, "NULL", False);
563 _glfw.x11.UTF8_STRING =
564 XInternAtom(_glfw.x11.display, "UTF8_STRING", False);
565 _glfw.x11.COMPOUND_STRING =
566 XInternAtom(_glfw.x11.display, "COMPOUND_STRING", False);
567 _glfw.x11.ATOM_PAIR = XInternAtom(_glfw.x11.display, "ATOM_PAIR", False);
568
569 // Custom selection property atom
570 _glfw.x11.GLFW_SELECTION =
571 XInternAtom(_glfw.x11.display, "GLFW_SELECTION", False);
572
573 // ICCCM standard clipboard atoms
574 _glfw.x11.TARGETS = XInternAtom(_glfw.x11.display, "TARGETS", False);
575 _glfw.x11.MULTIPLE = XInternAtom(_glfw.x11.display, "MULTIPLE", False);
576 _glfw.x11.CLIPBOARD = XInternAtom(_glfw.x11.display, "CLIPBOARD", False);
577
578 // Clipboard manager atoms
579 _glfw.x11.CLIPBOARD_MANAGER =
580 XInternAtom(_glfw.x11.display, "CLIPBOARD_MANAGER", False);
581 _glfw.x11.SAVE_TARGETS =
582 XInternAtom(_glfw.x11.display, "SAVE_TARGETS", False);
583
584 // Xdnd (drag and drop) atoms
585 _glfw.x11.XdndAware = XInternAtom(_glfw.x11.display, "XdndAware", False);
586 _glfw.x11.XdndEnter = XInternAtom(_glfw.x11.display, "XdndEnter", False);
587 _glfw.x11.XdndPosition = XInternAtom(_glfw.x11.display, "XdndPosition", False);
588 _glfw.x11.XdndStatus = XInternAtom(_glfw.x11.display, "XdndStatus", False);
589 _glfw.x11.XdndActionCopy = XInternAtom(_glfw.x11.display, "XdndActionCopy", False);
590 _glfw.x11.XdndDrop = XInternAtom(_glfw.x11.display, "XdndDrop", False);
591 _glfw.x11.XdndLeave = XInternAtom(_glfw.x11.display, "XdndLeave", False);
592 _glfw.x11.XdndFinished = XInternAtom(_glfw.x11.display, "XdndFinished", False);
593 _glfw.x11.XdndSelection = XInternAtom(_glfw.x11.display, "XdndSelection", False);
594
595 // ICCCM, EWMH and Motif window property atoms
596 // These can be set safely even without WM support
597 // The EWMH atoms that require WM support are handled in detectEWMH
598 _glfw.x11.WM_PROTOCOLS =
599 XInternAtom(_glfw.x11.display, "WM_PROTOCOLS", False);
600 _glfw.x11.WM_STATE =
601 XInternAtom(_glfw.x11.display, "WM_STATE", False);
602 _glfw.x11.WM_DELETE_WINDOW =
603 XInternAtom(_glfw.x11.display, "WM_DELETE_WINDOW", False);
604 _glfw.x11.NET_WM_ICON =
605 XInternAtom(_glfw.x11.display, "_NET_WM_ICON", False);
606 _glfw.x11.NET_WM_PING =
607 XInternAtom(_glfw.x11.display, "_NET_WM_PING", False);
608 _glfw.x11.NET_WM_PID =
609 XInternAtom(_glfw.x11.display, "_NET_WM_PID", False);
610 _glfw.x11.NET_WM_NAME =
611 XInternAtom(_glfw.x11.display, "_NET_WM_NAME", False);
612 _glfw.x11.NET_WM_ICON_NAME =
613 XInternAtom(_glfw.x11.display, "_NET_WM_ICON_NAME", False);
614 _glfw.x11.NET_WM_BYPASS_COMPOSITOR =
615 XInternAtom(_glfw.x11.display, "_NET_WM_BYPASS_COMPOSITOR", False);
616 _glfw.x11.MOTIF_WM_HINTS =
617 XInternAtom(_glfw.x11.display, "_MOTIF_WM_HINTS", False);
618
619 return GLFW_TRUE;
620}
621
622// Create a blank cursor for hidden and disabled cursor modes
623//
624static Cursor createHiddenCursor(void)
625{
626 unsigned char pixels[16 * 16 * 4];
627 GLFWimage image = { 16, 16, pixels };
628
629 memset(pixels, 0, sizeof(pixels));
630
631 return _glfwCreateCursorX11(&image, 0, 0);
632}
633
634// X error handler
635//
636static int errorHandler(Display *display, XErrorEvent* event)
637{
638 _glfw.x11.errorCode = event->error_code;
639 return 0;
640}
641
642
643//////////////////////////////////////////////////////////////////////////
644////// GLFW internal API //////
645//////////////////////////////////////////////////////////////////////////
646
647// Sets the X error handler callback
648//
649void _glfwGrabErrorHandlerX11(void)
650{
651 _glfw.x11.errorCode = Success;
652 XSetErrorHandler(errorHandler);
653}
654
655// Clears the X error handler callback
656//
657void _glfwReleaseErrorHandlerX11(void)
658{
659 // Synchronize to make sure all commands are processed
660 XSync(_glfw.x11.display, False);
661 XSetErrorHandler(NULL);
662}
663
664// Reports the specified error, appending information about the last X error
665//
666void _glfwInputErrorX11(int error, const char* message)
667{
668 char buffer[8192];
669 XGetErrorText(_glfw.x11.display, _glfw.x11.errorCode,
670 buffer, sizeof(buffer));
671
672 _glfwInputError(error, "%s: %s", message, buffer);
673}
674
675// Creates a native cursor object from the specified image and hotspot
676//
677Cursor _glfwCreateCursorX11(const GLFWimage* image, int xhot, int yhot)
678{
679 int i;
680 Cursor cursor;
681
682 XcursorImage* native = XcursorImageCreate(image->width, image->height);
683 if (native == NULL)
684 return None;
685
686 native->xhot = xhot;
687 native->yhot = yhot;
688
689 unsigned char* source = (unsigned char*) image->pixels;
690 XcursorPixel* target = native->pixels;
691
692 for (i = 0; i < image->width * image->height; i++, target++, source += 4)
693 {
694 unsigned int alpha = source[3];
695
696 *target = (alpha << 24) |
697 ((unsigned char) ((source[0] * alpha) / 255) << 16) |
698 ((unsigned char) ((source[1] * alpha) / 255) << 8) |
699 ((unsigned char) ((source[2] * alpha) / 255) << 0);
700 }
701
702 cursor = XcursorImageLoadCursor(_glfw.x11.display, native);
703 XcursorImageDestroy(native);
704
705 return cursor;
706}
707
708
709//////////////////////////////////////////////////////////////////////////
710////// GLFW platform API //////
711//////////////////////////////////////////////////////////////////////////
712
713int _glfwPlatformInit(void)
714{
715#if !defined(X_HAVE_UTF8_STRING)
716 // HACK: If the current locale is C, apply the environment's locale
717 // This is done because the C locale breaks wide character input
718 if (strcmp(setlocale(LC_CTYPE, NULL), "C") == 0)
719 setlocale(LC_CTYPE, "");
720#endif
721
722 XInitThreads();
723
724 _glfw.x11.display = XOpenDisplay(NULL);
725 if (!_glfw.x11.display)
726 {
727 const char* display = getenv("DISPLAY");
728 if (display)
729 {
730 _glfwInputError(GLFW_PLATFORM_ERROR,
731 "X11: Failed to open display %s", display);
732 }
733 else
734 {
735 _glfwInputError(GLFW_PLATFORM_ERROR,
736 "X11: The DISPLAY environment variable is missing");
737 }
738
739 return GLFW_FALSE;
740 }
741
742 _glfw.x11.screen = DefaultScreen(_glfw.x11.display);
743 _glfw.x11.root = RootWindow(_glfw.x11.display, _glfw.x11.screen);
744 _glfw.x11.context = XUniqueContext();
745
746 if (!initExtensions())
747 return GLFW_FALSE;
748
749 _glfw.x11.cursor = createHiddenCursor();
750
751 if (XSupportsLocale())
752 {
753 XSetLocaleModifiers("");
754
755 _glfw.x11.im = XOpenIM(_glfw.x11.display, 0, NULL, NULL);
756 if (_glfw.x11.im)
757 {
758 if (!hasUsableInputMethodStyle())
759 {
760 XCloseIM(_glfw.x11.im);
761 _glfw.x11.im = NULL;
762 }
763 }
764 }
765
766 if (!_glfwInitThreadLocalStoragePOSIX())
767 return GLFW_FALSE;
768
769 if (!_glfwInitGLX())
770 return GLFW_FALSE;
771
772 if (!_glfwInitJoysticksLinux())
773 return GLFW_FALSE;
774
775 _glfwInitEGL();
776 _glfwInitTimerPOSIX();
777
778 return GLFW_TRUE;
779}
780
781void _glfwPlatformTerminate(void)
782{
783 if (_glfw.x11.x11xcb.handle)
784 {
785 dlclose(_glfw.x11.x11xcb.handle);
786 _glfw.x11.x11xcb.handle = NULL;
787 }
788
789 if (_glfw.x11.cursor)
790 {
791 XFreeCursor(_glfw.x11.display, _glfw.x11.cursor);
792 _glfw.x11.cursor = (Cursor) 0;
793 }
794
795 free(_glfw.x11.clipboardString);
796
797 if (_glfw.x11.im)
798 {
799 XCloseIM(_glfw.x11.im);
800 _glfw.x11.im = NULL;
801 }
802
803 if (_glfw.x11.display)
804 {
805 XCloseDisplay(_glfw.x11.display);
806 _glfw.x11.display = NULL;
807 }
808
809 // NOTE: This needs to be done after XCloseDisplay, as libGL registers
810 // cleanup callbacks that get called by it
811 _glfwTerminateEGL();
812 _glfwTerminateGLX();
813
814 _glfwTerminateJoysticksLinux();
815 _glfwTerminateThreadLocalStoragePOSIX();
816}
817
818const char* _glfwPlatformGetVersionString(void)
819{
820 return _GLFW_VERSION_NUMBER " X11 GLX EGL"
821#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
822 " clock_gettime"
823#else
824 " gettimeofday"
825#endif
826#if defined(__linux__)
827 " /dev/js"
828#endif
829#if defined(_GLFW_HAS_XF86VM)
830 " Xf86vm"
831#endif
832#if defined(_GLFW_BUILD_DLL)
833 " shared"
834#endif
835 ;
836}
837
838