1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2012 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #include <X11/Xlib.h>
25 #include <X11/Xutil.h>
26
27 #include "SDL_version.h"
28 #include "SDL_timer.h"
29 #include "SDL_video.h"
30 #include "SDL_syswm.h"
31 #include "../SDL_pixels_c.h"
32 #include "../../events/SDL_events_c.h"
33 #include "SDL_x11modes_c.h"
34 #include "SDL_x11wm_c.h"
35
reverse_byte(Uint8 x)36 static Uint8 reverse_byte(Uint8 x)
37 {
38 x = (x & 0xaa) >> 1 | (x & 0x55) << 1;
39 x = (x & 0xcc) >> 2 | (x & 0x33) << 2;
40 x = (x & 0xf0) >> 4 | (x & 0x0f) << 4;
41 return x;
42 }
43
X11_SetIcon(_THIS,SDL_Surface * icon,Uint8 * mask)44 void X11_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
45 {
46 SDL_Surface *sicon;
47 XWMHints *wmhints;
48 XImage *icon_image;
49 Pixmap icon_pixmap;
50 Pixmap mask_pixmap;
51 Window icon_window = None;
52 GC gc;
53 XGCValues GCvalues;
54 int i, dbpp;
55 SDL_Rect bounds;
56 Uint8 *LSBmask;
57 Visual *dvis;
58 char *p;
59 int masksize;
60
61 SDL_Lock_EventThread();
62
63 /* The icon must use the default visual, depth and colormap of the
64 screen, so it might need a conversion */
65 dvis = DefaultVisual(SDL_Display, SDL_Screen);
66 dbpp = DefaultDepth(SDL_Display, SDL_Screen);
67 for(i = 0; i < this->hidden->nvisuals; i++) {
68 if(this->hidden->visuals[i].visual == dvis) {
69 dbpp = this->hidden->visuals[i].bpp;
70 break;
71 }
72 }
73
74 /* The Visual struct is supposed to be opaque but we cheat a little */
75 sicon = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
76 dbpp,
77 dvis->red_mask, dvis->green_mask,
78 dvis->blue_mask, 0);
79 if ( sicon == NULL )
80 goto done;
81
82 if(dbpp == 8) {
83 /* Default visual is 8bit; we need to allocate colours from
84 the default colormap */
85 SDL_Color want[256], got[256];
86 int nwant;
87 Colormap dcmap;
88 int missing;
89 dcmap = DefaultColormap(SDL_Display, SDL_Screen);
90 if(icon->format->palette) {
91 /* The icon has a palette as well - we just have to
92 find those colours */
93 nwant = icon->format->palette->ncolors;
94 SDL_memcpy(want, icon->format->palette->colors,
95 nwant * sizeof want[0]);
96 } else {
97 /* try the standard 6x6x6 cube for lack of better
98 ideas */
99 int r, g, b, i;
100 for(r = i = 0; r < 256; r += 0x33)
101 for(g = 0; g < 256; g += 0x33)
102 for(b = 0; b < 256; b += 0x33, i++) {
103 want[i].r = r;
104 want[i].g = g;
105 want[i].b = b;
106 }
107 nwant = 216;
108 }
109 if(SDL_iconcolors) {
110 /* free already allocated colours first */
111 unsigned long freelist[512];
112 int nfree = 0;
113 for(i = 0; i < 256; i++) {
114 while(SDL_iconcolors[i]) {
115 freelist[nfree++] = i;
116 SDL_iconcolors[i]--;
117 }
118 }
119 XFreeColors(GFX_Display, dcmap, freelist, nfree, 0);
120 }
121 if(!SDL_iconcolors)
122 SDL_iconcolors = SDL_malloc(256 * sizeof *SDL_iconcolors);
123 SDL_memset(SDL_iconcolors, 0, 256 * sizeof *SDL_iconcolors);
124
125 /* try to allocate the colours */
126 SDL_memset(got, 0, sizeof got);
127 missing = 0;
128 for(i = 0; i < nwant; i++) {
129 XColor c;
130 c.red = want[i].r << 8;
131 c.green = want[i].g << 8;
132 c.blue = want[i].b << 8;
133 c.flags = DoRed | DoGreen | DoBlue;
134 if(XAllocColor(GFX_Display, dcmap, &c)) {
135 /* got the colour */
136 SDL_iconcolors[c.pixel]++;
137 got[c.pixel] = want[i];
138 } else {
139 missing = 1;
140 }
141 }
142 if(missing) {
143 /* Some colours were apparently missing, so we just
144 allocate all the rest as well */
145 XColor cols[256];
146 for(i = 0; i < 256; i++)
147 cols[i].pixel = i;
148 XQueryColors(GFX_Display, dcmap, cols, 256);
149 for(i = 0; i < 256; i++) {
150 got[i].r = cols[i].red >> 8;
151 got[i].g = cols[i].green >> 8;
152 got[i].b = cols[i].blue >> 8;
153 if(!SDL_iconcolors[i]) {
154 if(XAllocColor(GFX_Display, dcmap,
155 cols + i)) {
156 SDL_iconcolors[i] = 1;
157 } else {
158 /* index not available */
159 got[i].r = 0;
160 got[i].g = 0;
161 got[i].b = 0;
162 }
163 }
164 }
165 }
166
167 SDL_SetColors(sicon, got, 0, 256);
168 }
169
170 bounds.x = 0;
171 bounds.y = 0;
172 bounds.w = icon->w;
173 bounds.h = icon->h;
174 if ( SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0 )
175 goto done;
176
177 /* We need the mask as given, except in LSBfirst format instead of
178 MSBfirst. Reverse the bits in each byte. */
179 masksize = ((sicon->w + 7) >> 3) * sicon->h;
180 LSBmask = SDL_malloc(masksize);
181 if ( LSBmask == NULL ) {
182 goto done;
183 }
184 SDL_memset(LSBmask, 0, masksize);
185 for(i = 0; i < masksize; i++)
186 LSBmask[i] = reverse_byte(mask[i]);
187 mask_pixmap = XCreatePixmapFromBitmapData(SDL_Display, WMwindow,
188 (char *)LSBmask,
189 sicon->w, sicon->h,
190 1L, 0L, 1);
191
192 /* Transfer the image to an X11 pixmap */
193 icon_image = XCreateImage(SDL_Display,
194 DefaultVisual(SDL_Display, SDL_Screen),
195 DefaultDepth(SDL_Display, SDL_Screen),
196 ZPixmap, 0, sicon->pixels,
197 sicon->w, sicon->h,
198 32, 0);
199 icon_image->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN)
200 ? MSBFirst : LSBFirst;
201 icon_pixmap = XCreatePixmap(SDL_Display, SDL_Root, sicon->w, sicon->h,
202 DefaultDepth(SDL_Display, SDL_Screen));
203 gc = XCreateGC(SDL_Display, icon_pixmap, 0, &GCvalues);
204 XPutImage(SDL_Display, icon_pixmap, gc, icon_image,
205 0, 0, 0, 0, sicon->w, sicon->h);
206 XFreeGC(SDL_Display, gc);
207 XDestroyImage(icon_image);
208 SDL_free(LSBmask);
209 sicon->pixels = NULL;
210
211 /* Some buggy window managers (some versions of Enlightenment, it
212 seems) need an icon window *and* icon pixmap to work properly, while
213 it screws up others. The default is only to use a pixmap. */
214 p = SDL_getenv("SDL_VIDEO_X11_ICONWIN");
215 if(p && *p) {
216 icon_window = XCreateSimpleWindow(SDL_Display, SDL_Root,
217 0, 0, sicon->w, sicon->h, 0,
218 CopyFromParent,
219 CopyFromParent);
220 XSetWindowBackgroundPixmap(SDL_Display, icon_window,
221 icon_pixmap);
222 XClearWindow(SDL_Display, icon_window);
223 }
224
225 /* Set the window icon to the icon pixmap (and icon window) */
226 wmhints = XAllocWMHints();
227 wmhints->flags = (IconPixmapHint | IconMaskHint | InputHint);
228 wmhints->icon_pixmap = icon_pixmap;
229 wmhints->icon_mask = mask_pixmap;
230 wmhints->input = True;
231 if(icon_window != None) {
232 wmhints->flags |= IconWindowHint;
233 wmhints->icon_window = icon_window;
234 }
235 XSetWMHints(SDL_Display, WMwindow, wmhints);
236 XFree(wmhints);
237 XSync(SDL_Display, False);
238
239 done:
240 SDL_Unlock_EventThread();
241 SDL_FreeSurface(sicon);
242 }
243
X11_SetCaptionNoLock(_THIS,const char * title,const char * icon)244 void X11_SetCaptionNoLock(_THIS, const char *title, const char *icon)
245 {
246 XTextProperty titleprop, iconprop;
247 Status status;
248
249 #ifdef X_HAVE_UTF8_STRING
250 Atom _NET_WM_NAME = 0;
251 Atom _NET_WM_ICON_NAME = 0;
252
253 /* Look up some useful Atoms */
254 if (SDL_X11_HAVE_UTF8) {
255 _NET_WM_NAME = XInternAtom(SDL_Display, "_NET_WM_NAME", False);
256 _NET_WM_ICON_NAME = XInternAtom(SDL_Display, "_NET_WM_ICON_NAME", False);
257 }
258 #endif
259
260 if ( title != NULL ) {
261 char *title_locale = SDL_iconv_utf8_locale(title);
262 if ( !title_locale ) {
263 SDL_OutOfMemory();
264 return;
265 }
266 status = XStringListToTextProperty(&title_locale, 1, &titleprop);
267 SDL_free(title_locale);
268 if ( status ) {
269 XSetTextProperty(SDL_Display, WMwindow, &titleprop, XA_WM_NAME);
270 XFree(titleprop.value);
271 }
272 #ifdef X_HAVE_UTF8_STRING
273 if (SDL_X11_HAVE_UTF8) {
274 status = Xutf8TextListToTextProperty(SDL_Display,
275 (char **)&title, 1, XUTF8StringStyle, &titleprop);
276 if ( status == Success ) {
277 XSetTextProperty(SDL_Display, WMwindow, &titleprop, _NET_WM_NAME);
278 XFree(titleprop.value);
279 }
280 }
281 #endif
282 }
283 if ( icon != NULL ) {
284 char *icon_locale = SDL_iconv_utf8_locale(icon);
285 if ( !icon_locale ) {
286 SDL_OutOfMemory();
287 return;
288 }
289 status = XStringListToTextProperty(&icon_locale, 1, &iconprop);
290 SDL_free(icon_locale);
291 if ( status ) {
292 XSetTextProperty(SDL_Display, WMwindow, &iconprop, XA_WM_ICON_NAME);
293 XFree(iconprop.value);
294 }
295 #ifdef X_HAVE_UTF8_STRING
296 if (SDL_X11_HAVE_UTF8) {
297 status = Xutf8TextListToTextProperty(SDL_Display,
298 (char **)&icon, 1, XUTF8StringStyle, &iconprop);
299 if ( status == Success ) {
300 XSetTextProperty(SDL_Display, WMwindow, &iconprop, _NET_WM_ICON_NAME);
301 XFree(iconprop.value);
302 }
303 }
304 #endif
305 }
306 XSync(SDL_Display, False);
307 }
308
X11_SetCaption(_THIS,const char * title,const char * icon)309 void X11_SetCaption(_THIS, const char *title, const char *icon)
310 {
311 SDL_Lock_EventThread();
312 X11_SetCaptionNoLock(this, title, icon);
313 SDL_Unlock_EventThread();
314 }
315
316 /* Iconify the window */
X11_IconifyWindow(_THIS)317 int X11_IconifyWindow(_THIS)
318 {
319 int result;
320
321 SDL_Lock_EventThread();
322 result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
323 XSync(SDL_Display, False);
324 SDL_Unlock_EventThread();
325 return(result);
326 }
327
328 #if 0
329 #define D(...) printf(__VA_ARGS__)
330 #define E(...) D(__VA_ARGS__)
331 #else
332 #define D(...) ((void)0)
333 #define E(...) ((void)0)
334 #endif
335
set_window_pos_nolock(_THIS,int x,int y)336 static void set_window_pos_nolock(_THIS, int x, int y)
337 {
338 int xNew, yNew;
339 Window child;
340 int xAdjust = X11_wmXAdjust;
341 int yAdjust = X11_wmYAdjust;
342
343 /* don't do anything in full-screen mode, because the FSwindow is used
344 * instead of the WMwindow, which will make the adjustment go wild
345 */
346 if (this->screen->flags & SDL_FULLSCREEN)
347 return;
348
349 /* this code is tricky because some window managers, but not all,
350 * will translate the final window position by a given offset
351 * corresponding to the frame decoration.
352 *
353 * so we first try to move the window, get the position that the
354 * window manager has set, and if they are different, re-position the
355 * window again with an adjustment.
356 *
357 * this causes a slight flicker since the window 'jumps' very
358 * quickly from one position to the other.
359 */
360
361 D("%s: move to [%d,%d] adjusted to [%d,%d]\n", __FUNCTION__,
362 x, y, x+xAdjust, y+yAdjust);
363 XMoveWindow(SDL_Display, WMwindow, x + xAdjust, y + yAdjust);
364 XSync(SDL_Display, True);
365 XTranslateCoordinates( SDL_Display, WMwindow, SDL_Root, 0, 0, &xNew, &yNew, &child );
366 if (xNew != x || yNew != y) {
367 X11_wmXAdjust = xAdjust = x - xNew;
368 X11_wmYAdjust = yAdjust = y - yNew;
369 D("%s: read pos [%d,%d], recomputing adjust=[%d,%d] moving to [%d,%d]\n",
370 __FUNCTION__, xNew, yNew, xAdjust, yAdjust, x+xAdjust, y+yAdjust);
371 XMoveWindow(SDL_Display, WMwindow, x + xAdjust, y + yAdjust );
372 }
373 XSync(SDL_Display, False);
374 }
375
376 /* Set window position */
X11_SetWindowPos(_THIS,int x,int y)377 void X11_SetWindowPos(_THIS, int x, int y)
378 {
379 SDL_Lock_EventThread();
380 set_window_pos_nolock(this, x, y);
381 SDL_Unlock_EventThread();
382 }
383
384 /* Get window position */
X11_GetWindowPos(_THIS,int * px,int * py)385 void X11_GetWindowPos(_THIS, int *px, int *py)
386 {
387 /* in full-screen mode, you can't move the window */
388 if (this->screen->flags & SDL_FULLSCREEN) {
389 *px = *py = 0;
390 return;
391 }
392
393
394 SDL_Lock_EventThread();
395 {
396 Window child;
397
398 XTranslateCoordinates( SDL_Display, WMwindow, SDL_Root, 0, 0, px, py, &child );
399 }
400 SDL_Unlock_EventThread();
401 }
402
403 static int
is_window_visible(_THIS,int screen_x,int screen_y,int screen_w,int screen_h)404 is_window_visible(_THIS, int screen_x, int screen_y, int screen_w, int screen_h )
405 {
406 XWindowAttributes attr;
407 int x, y;
408 Window child;
409
410 XGetWindowAttributes( SDL_Display, WMwindow, &attr );
411 XTranslateCoordinates( SDL_Display, WMwindow, SDL_Root, 0, 0, &x, &y, &child );
412
413 return ( x >= screen_x && x + attr.width <= screen_x + screen_w &&
414 y >= screen_y && y + attr.height <= screen_y + screen_h );
415 }
416
X11_IsWindowVisible(_THIS,int recenter)417 int X11_IsWindowVisible(_THIS, int recenter)
418 {
419 int result = 0;
420 XWindowAttributes attr;
421 int screen_w, screen_h;
422
423 SDL_Lock_EventThread();
424 XGetWindowAttributes( SDL_Display, SDL_Root, &attr );
425 screen_w = attr.width;
426 screen_h = attr.height;
427
428 #if SDL_VIDEO_DRIVER_X11_XINERAMA
429 if (use_xinerama) {
430 SDL_NAME(XineramaScreenInfo) *xinerama;
431 int i, screens;
432
433 xinerama = SDL_NAME(XineramaQueryScreens)(SDL_Display, &screens);
434 for (i = 0; i < screens; i++) {
435 if ( is_window_visible( this,
436 xinerama[i].x_org, xinerama[i].y_org,
437 xinerama[i].width, xinerama[i].height ) )
438 {
439 result = 1;
440 break;
441 }
442 }
443
444 if ( !result && recenter ) {
445 set_window_pos_nolock(this,
446 xinerama[0].x_org + (xinerama[0].width - this->screen->w)/2,
447 xinerama[0].y_org + (xinerama[0].height - this->screen->h)/2 );
448 }
449 XFree(xinerama);
450 goto Exit;
451 }
452 #endif
453 if ( is_window_visible( this, 0, 0, screen_w, screen_h ) ) {
454 result = 1;
455 }
456
457 if ( !result && recenter ) {
458 set_window_pos_nolock( this,
459 (screen_w - this->screen->w)/2,
460 (screen_h - this->screen->h)/2 );
461 }
462 #ifdef SDL_VIDEO_DRIVER_X11_XINERAMA
463 Exit:
464 #endif
465 SDL_Unlock_EventThread();
466 return result;
467 }
468
X11_GrabInputNoLock(_THIS,SDL_GrabMode mode)469 SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
470 {
471 int result;
472
473 if ( this->screen == NULL || SDL_Display == NULL ) {
474 return(SDL_GRAB_OFF);
475 }
476 if ( ! SDL_Window ) {
477 return(mode); /* Will be set later on mode switch */
478 }
479 if ( mode == SDL_GRAB_OFF ) {
480 XUngrabPointer(SDL_Display, CurrentTime);
481 XUngrabKeyboard(SDL_Display, CurrentTime);
482 } else {
483 if ( this->screen->flags & SDL_FULLSCREEN ) {
484 /* Unbind the mouse from the fullscreen window */
485 XUngrabPointer(SDL_Display, CurrentTime);
486 }
487 /* Try to grab the mouse */
488 #if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */
489 for ( numtries = 0; numtries < 10; ++numtries ) {
490 #else
491 for ( ; ; ) {
492 #endif
493 result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
494 GrabModeAsync, GrabModeAsync,
495 SDL_Window, None, CurrentTime);
496 if ( result == GrabSuccess ) {
497 break;
498 }
499 SDL_Delay(100);
500 }
501 if ( result != GrabSuccess ) {
502 /* Uh, oh, what do we do here? */ ;
503 }
504 /* Now grab the keyboard */
505 XGrabKeyboard(SDL_Display, WMwindow, True,
506 GrabModeAsync, GrabModeAsync, CurrentTime);
507
508 /* Raise the window if we grab the mouse */
509 if ( !(this->screen->flags & SDL_FULLSCREEN) )
510 XRaiseWindow(SDL_Display, WMwindow);
511
512 /* Make sure we register input focus */
513 SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
514 /* Since we grabbed the pointer, we have mouse focus, too. */
515 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
516 }
517 XSync(SDL_Display, False);
518
519 return(mode);
520 }
521
522 SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode)
523 {
524 SDL_Lock_EventThread();
525 mode = X11_GrabInputNoLock(this, mode);
526 SDL_Unlock_EventThread();
527
528 return(mode);
529 }
530
531 #define MM_PER_INCH 25.4
532
533 int
534 X11_GetMonitorDPI(_THIS, int *px_dpi, int *py_dpi)
535 {
536 Display* display = SDL_Display;
537 int screen = XDefaultScreen(display);
538 int xdpi, ydpi;
539
540 int width = XDisplayWidth(display, screen);
541 int width_mm = XDisplayWidthMM(display, screen);
542 int height = XDisplayHeight(display, screen);
543 int height_mm = XDisplayHeightMM(display, screen);
544
545 if (width_mm <= 0 || height_mm <= 0) {
546 return -1;
547 }
548
549 xdpi = (int)(width * MM_PER_INCH / width_mm + 0.5);
550 ydpi = (int)(height * MM_PER_INCH / height_mm + 0.5);
551
552 if (xdpi < 20 || xdpi > 400 || ydpi < 20 || ydpi > 400) {
553 return -1;
554 }
555
556 *px_dpi = xdpi;
557 *py_dpi = ydpi;
558
559 return 0;
560 }
561
562 int
563 X11_GetMonitorRect(_THIS, SDL_Rect *rect)
564 {
565 Display* display = SDL_Display;
566 int screen = XDefaultScreen(display);
567
568 rect->x = 0;
569 rect->y = 0;
570 rect->w = XDisplayWidth(display, screen);
571 rect->h = XDisplayHeight(display, screen);
572
573 return 0;
574 }
575
576 /* If 'info' is the right version, this function fills it and returns 1.
577 Otherwise, in case of a version mismatch, it returns -1.
578 */
579 static void lock_display(void)
580 {
581 SDL_Lock_EventThread();
582 }
583 static void unlock_display(void)
584 {
585 /* Make sure any X11 transactions are completed */
586 SDL_VideoDevice *this = current_video;
587 XSync(SDL_Display, False);
588 SDL_Unlock_EventThread();
589 }
590
591 #include <stdio.h>
592 int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info)
593 {
594 if ( info->version.major <= SDL_MAJOR_VERSION ) {
595 info->subsystem = SDL_SYSWM_X11;
596 info->info.x11.display = SDL_Display;
597 info->info.x11.window = SDL_Window;
598 if ( SDL_VERSIONNUM(info->version.major,
599 info->version.minor,
600 info->version.patch) >= 1002 ) {
601 info->info.x11.fswindow = FSwindow;
602 info->info.x11.wmwindow = WMwindow;
603 }
604
605
606 if ( SDL_VERSIONNUM(info->version.major,
607 info->version.minor,
608 info->version.patch) >= 1212 ) {
609 info->info.x11.gfxdisplay = GFX_Display;
610 }
611
612 info->info.x11.lock_func = lock_display;
613 info->info.x11.unlock_func = unlock_display;
614 return(1);
615 } else {
616 SDL_SetError("Application not compiled with SDL %d.%d\n",
617 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
618 return(-1);
619 }
620 }
621