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 (at) 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 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 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 } 243 244 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 } 308 309 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 */ 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 335 336 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 */ 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 */ 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 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 } 416 417 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 } 468 469 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
