1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 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);
228 wmhints->icon_pixmap = icon_pixmap;
229 wmhints->icon_mask = mask_pixmap;
230 if(icon_window != None) {
231 wmhints->flags |= IconWindowHint;
232 wmhints->icon_window = icon_window;
233 }
234 XSetWMHints(SDL_Display, WMwindow, wmhints);
235 XFree(wmhints);
236 XSync(SDL_Display, False);
237
238 done:
239 SDL_Unlock_EventThread();
240 SDL_FreeSurface(sicon);
241 }
242
X11_SetCaptionNoLock(_THIS,const char * title,const char * icon)243 void X11_SetCaptionNoLock(_THIS, const char *title, const char *icon)
244 {
245 XTextProperty titleprop, iconprop;
246 Status status;
247
248 #ifdef X_HAVE_UTF8_STRING
249 Atom _NET_WM_NAME = 0;
250 Atom _NET_WM_ICON_NAME = 0;
251
252 /* Look up some useful Atoms */
253 if (SDL_X11_HAVE_UTF8) {
254 _NET_WM_NAME = XInternAtom(SDL_Display, "_NET_WM_NAME", False);
255 _NET_WM_ICON_NAME = XInternAtom(SDL_Display, "_NET_WM_ICON_NAME", False);
256 }
257 #endif
258
259 if ( title != NULL ) {
260 char *title_locale = SDL_iconv_utf8_locale(title);
261 if ( !title_locale ) {
262 SDL_OutOfMemory();
263 return;
264 }
265 status = XStringListToTextProperty(&title_locale, 1, &titleprop);
266 SDL_free(title_locale);
267 if ( status ) {
268 XSetTextProperty(SDL_Display, WMwindow, &titleprop, XA_WM_NAME);
269 XFree(titleprop.value);
270 }
271 #ifdef X_HAVE_UTF8_STRING
272 if (SDL_X11_HAVE_UTF8) {
273 status = Xutf8TextListToTextProperty(SDL_Display,
274 (char **)&title, 1, XUTF8StringStyle, &titleprop);
275 if ( status == Success ) {
276 XSetTextProperty(SDL_Display, WMwindow, &titleprop, _NET_WM_NAME);
277 XFree(titleprop.value);
278 }
279 }
280 #endif
281 }
282 if ( icon != NULL ) {
283 char *icon_locale = SDL_iconv_utf8_locale(icon);
284 if ( !icon_locale ) {
285 SDL_OutOfMemory();
286 return;
287 }
288 status = XStringListToTextProperty(&icon_locale, 1, &iconprop);
289 SDL_free(icon_locale);
290 if ( status ) {
291 XSetTextProperty(SDL_Display, WMwindow, &iconprop, XA_WM_ICON_NAME);
292 XFree(iconprop.value);
293 }
294 #ifdef X_HAVE_UTF8_STRING
295 if (SDL_X11_HAVE_UTF8) {
296 status = Xutf8TextListToTextProperty(SDL_Display,
297 (char **)&icon, 1, XUTF8StringStyle, &iconprop);
298 if ( status == Success ) {
299 XSetTextProperty(SDL_Display, WMwindow, &iconprop, _NET_WM_ICON_NAME);
300 XFree(iconprop.value);
301 }
302 }
303 #endif
304 }
305 XSync(SDL_Display, False);
306 }
307
X11_SetCaption(_THIS,const char * title,const char * icon)308 void X11_SetCaption(_THIS, const char *title, const char *icon)
309 {
310 SDL_Lock_EventThread();
311 X11_SetCaptionNoLock(this, title, icon);
312 SDL_Unlock_EventThread();
313 }
314
315 /* Iconify the window */
X11_IconifyWindow(_THIS)316 int X11_IconifyWindow(_THIS)
317 {
318 int result;
319
320 SDL_Lock_EventThread();
321 result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
322 XSync(SDL_Display, False);
323 SDL_Unlock_EventThread();
324 return(result);
325 }
326
327 #if 0
328 #define D(...) printf(__VA_ARGS__)
329 #define E(...) D(__VA_ARGS__)
330 #else
331 #define D(...) ((void)0)
332 #define E(...) ((void)0)
333 #endif
334
set_window_pos_nolock(_THIS,int x,int y)335 static void set_window_pos_nolock(_THIS, int x, int y)
336 {
337 XWindowAttributes attr;
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 Status ret;
398
399 XTranslateCoordinates( SDL_Display, WMwindow, SDL_Root, 0, 0, px, py, &child );
400 }
401 SDL_Unlock_EventThread();
402 }
403
404 static int
is_window_visible(_THIS,int screen_x,int screen_y,int screen_w,int screen_h)405 is_window_visible(_THIS, int screen_x, int screen_y, int screen_w, int screen_h )
406 {
407 XWindowAttributes attr;
408 int x, y;
409 Window child;
410
411 XGetWindowAttributes( SDL_Display, WMwindow, &attr );
412 XTranslateCoordinates( SDL_Display, WMwindow, SDL_Root, 0, 0, &x, &y, &child );
413
414 return ( x >= screen_x && x + attr.width <= screen_x + screen_w &&
415 y >= screen_y && y + attr.height <= screen_y + screen_h );
416 }
417
X11_IsWindowVisible(_THIS,int recenter)418 int X11_IsWindowVisible(_THIS, int recenter)
419 {
420 int result = 0;
421 XWindowAttributes attr;
422 int screen_w, screen_h;
423
424 SDL_Lock_EventThread();
425 XGetWindowAttributes( SDL_Display, SDL_Root, &attr );
426 screen_w = attr.width;
427 screen_h = attr.height;
428
429 #if SDL_VIDEO_DRIVER_X11_XINERAMA
430 if (use_xinerama) {
431 SDL_NAME(XineramaScreenInfo) *xinerama;
432 int i, screens;
433
434 xinerama = SDL_NAME(XineramaQueryScreens)(SDL_Display, &screens);
435 for (i = 0; i < screens; i++) {
436 if ( is_window_visible( this,
437 xinerama[i].x_org, xinerama[i].y_org,
438 xinerama[i].width, xinerama[i].height ) )
439 {
440 result = 1;
441 break;
442 }
443 }
444
445 if ( !result && recenter ) {
446 set_window_pos_nolock(this,
447 xinerama[0].x_org + (xinerama[0].width - this->screen->w)/2,
448 xinerama[0].y_org + (xinerama[0].height - this->screen->h)/2 );
449 }
450 XFree(xinerama);
451 goto Exit;
452 }
453 #endif
454 if ( is_window_visible( this, 0, 0, screen_w, screen_h ) ) {
455 result = 1;
456 }
457
458 if ( !result && recenter ) {
459 set_window_pos_nolock( this,
460 (screen_w - this->screen->w)/2,
461 (screen_h - this->screen->h)/2 );
462 }
463 #ifdef SDL_VIDEO_DRIVER_X11_XINERAMA
464 Exit:
465 #endif
466 SDL_Unlock_EventThread();
467 return result;
468 }
469
X11_GrabInputNoLock(_THIS,SDL_GrabMode mode)470 SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
471 {
472 int result;
473
474 if ( this->screen == NULL ) {
475 return(SDL_GRAB_OFF);
476 }
477 if ( ! SDL_Window ) {
478 return(mode); /* Will be set later on mode switch */
479 }
480 if ( mode == SDL_GRAB_OFF ) {
481 XUngrabPointer(SDL_Display, CurrentTime);
482 XUngrabKeyboard(SDL_Display, CurrentTime);
483 } else {
484 if ( this->screen->flags & SDL_FULLSCREEN ) {
485 /* Unbind the mouse from the fullscreen window */
486 XUngrabPointer(SDL_Display, CurrentTime);
487 }
488 /* Try to grab the mouse */
489 #if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */
490 for ( numtries = 0; numtries < 10; ++numtries ) {
491 #else
492 for ( ; ; ) {
493 #endif
494 result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
495 GrabModeAsync, GrabModeAsync,
496 SDL_Window, None, CurrentTime);
497 if ( result == GrabSuccess ) {
498 break;
499 }
500 SDL_Delay(100);
501 }
502 if ( result != GrabSuccess ) {
503 /* Uh, oh, what do we do here? */ ;
504 }
505 /* Now grab the keyboard */
506 XGrabKeyboard(SDL_Display, WMwindow, True,
507 GrabModeAsync, GrabModeAsync, CurrentTime);
508
509 /* Raise the window if we grab the mouse */
510 if ( !(this->screen->flags & SDL_FULLSCREEN) )
511 XRaiseWindow(SDL_Display, WMwindow);
512
513 /* Make sure we register input focus */
514 SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
515 /* Since we grabbed the pointer, we have mouse focus, too. */
516 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
517 }
518 XSync(SDL_Display, False);
519
520 return(mode);
521 }
522
523 SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode)
524 {
525 SDL_Lock_EventThread();
526 mode = X11_GrabInputNoLock(this, mode);
527 SDL_Unlock_EventThread();
528
529 return(mode);
530 }
531
532 #define MM_PER_INCH 25.4
533
534 int
535 X11_GetMonitorDPI(_THIS, int *px_dpi, int *py_dpi)
536 {
537 Display* display = SDL_Display;
538 int screen = XDefaultScreen(display);
539 int xdpi, ydpi;
540
541 int width = XDisplayWidth(display, screen);
542 int width_mm = XDisplayWidthMM(display, screen);
543 int height = XDisplayHeight(display, screen);
544 int height_mm = XDisplayHeightMM(display, screen);
545
546 if (width_mm <= 0 || height_mm <= 0) {
547 return -1;
548 }
549
550 xdpi = (int)(width * MM_PER_INCH / width_mm + 0.5);
551 ydpi = (int)(height * MM_PER_INCH / height_mm + 0.5);
552
553 if (xdpi < 20 || xdpi > 400 || ydpi < 20 || ydpi > 400) {
554 return -1;
555 }
556
557 *px_dpi = xdpi;
558 *py_dpi = ydpi;
559
560 return 0;
561 }
562
563 int
564 X11_GetMonitorRect(_THIS, SDL_Rect *rect)
565 {
566 Display* display = SDL_Display;
567 int screen = XDefaultScreen(display);
568
569 rect->x = 0;
570 rect->y = 0;
571 rect->w = XDisplayWidth(display, screen);
572 rect->h = XDisplayHeight(display, screen);
573
574 return 0;
575 }
576
577 /* If 'info' is the right version, this function fills it and returns 1.
578 Otherwise, in case of a version mismatch, it returns -1.
579 */
580 static void lock_display(void)
581 {
582 SDL_Lock_EventThread();
583 }
584 static void unlock_display(void)
585 {
586 /* Make sure any X11 transactions are completed */
587 SDL_VideoDevice *this = current_video;
588 XSync(SDL_Display, False);
589 SDL_Unlock_EventThread();
590 }
591
592 #include <stdio.h>
593 int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info)
594 {
595 if ( info->version.major <= SDL_MAJOR_VERSION ) {
596 info->subsystem = SDL_SYSWM_X11;
597 info->info.x11.display = SDL_Display;
598 info->info.x11.window = SDL_Window;
599 if ( SDL_VERSIONNUM(info->version.major,
600 info->version.minor,
601 info->version.patch) >= 1002 ) {
602 info->info.x11.fswindow = FSwindow;
603 info->info.x11.wmwindow = WMwindow;
604 }
605
606
607 if ( SDL_VERSIONNUM(info->version.major,
608 info->version.minor,
609 info->version.patch) >= 1212 ) {
610 info->info.x11.gfxdisplay = GFX_Display;
611 }
612
613 info->info.x11.lock_func = lock_display;
614 info->info.x11.unlock_func = unlock_display;
615 return(1);
616 } else {
617 SDL_SetError("Application not compiled with SDL %d.%d\n",
618 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
619 return(-1);
620 }
621 }
622