| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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 | |
| 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 | SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode) |
| 329 | { |
| 330 | int result; |
| 331 | |
| 332 | if ( this->screen == NULL ) { |
| 333 | return(SDL_GRAB_OFF); |
| 334 | } |
| 335 | if ( ! SDL_Window ) { |
| 336 | return(mode); /* Will be set later on mode switch */ |
| 337 | } |
| 338 | if ( mode == SDL_GRAB_OFF ) { |
| 339 | XUngrabPointer(SDL_Display, CurrentTime); |
| 340 | XUngrabKeyboard(SDL_Display, CurrentTime); |
| 341 | } else { |
| 342 | if ( this->screen->flags & SDL_FULLSCREEN ) { |
| 343 | /* Unbind the mouse from the fullscreen window */ |
| 344 | XUngrabPointer(SDL_Display, CurrentTime); |
| 345 | } |
| 346 | /* Try to grab the mouse */ |
| 347 | #if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */ |
| 348 | for ( numtries = 0; numtries < 10; ++numtries ) { |
| 349 | #else |
| 350 | for ( ; ; ) { |
| 351 | #endif |
| 352 | result = XGrabPointer(SDL_Display, SDL_Window, True, 0, |
| 353 | GrabModeAsync, GrabModeAsync, |
| 354 | SDL_Window, None, CurrentTime); |
| 355 | if ( result == GrabSuccess ) { |
| 356 | break; |
| 357 | } |
| 358 | SDL_Delay(100); |
| 359 | } |
| 360 | if ( result != GrabSuccess ) { |
| 361 | /* Uh, oh, what do we do here? */ ; |
| 362 | } |
| 363 | /* Now grab the keyboard */ |
| 364 | XGrabKeyboard(SDL_Display, WMwindow, True, |
| 365 | GrabModeAsync, GrabModeAsync, CurrentTime); |
| 366 | |
| 367 | /* Raise the window if we grab the mouse */ |
| 368 | if ( !(this->screen->flags & SDL_FULLSCREEN) ) |
| 369 | XRaiseWindow(SDL_Display, WMwindow); |
| 370 | |
| 371 | /* Make sure we register input focus */ |
| 372 | SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS); |
| 373 | /* Since we grabbed the pointer, we have mouse focus, too. */ |
| 374 | SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); |
| 375 | } |
| 376 | XSync(SDL_Display, False); |
| 377 | |
| 378 | return(mode); |
| 379 | } |
| 380 | |
| 381 | SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode) |
| 382 | { |
| 383 | SDL_Lock_EventThread(); |
| 384 | mode = X11_GrabInputNoLock(this, mode); |
| 385 | SDL_Unlock_EventThread(); |
| 386 | |
| 387 | return(mode); |
| 388 | } |
| 389 | |
| 390 | /* If 'info' is the right version, this function fills it and returns 1. |
| 391 | Otherwise, in case of a version mismatch, it returns -1. |
| 392 | */ |
| 393 | static void lock_display(void) |
| 394 | { |
| 395 | SDL_Lock_EventThread(); |
| 396 | } |
| 397 | static void unlock_display(void) |
| 398 | { |
| 399 | /* Make sure any X11 transactions are completed */ |
| 400 | SDL_VideoDevice *this = current_video; |
| 401 | XSync(SDL_Display, False); |
| 402 | SDL_Unlock_EventThread(); |
| 403 | } |
| 404 | |
| 405 | #include <stdio.h> |
| 406 | int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info) |
| 407 | { |
| 408 | if ( info->version.major <= SDL_MAJOR_VERSION ) { |
| 409 | info->subsystem = SDL_SYSWM_X11; |
| 410 | info->info.x11.display = SDL_Display; |
| 411 | info->info.x11.window = SDL_Window; |
| 412 | if ( SDL_VERSIONNUM(info->version.major, |
| 413 | info->version.minor, |
| 414 | info->version.patch) >= 1002 ) { |
| 415 | info->info.x11.fswindow = FSwindow; |
| 416 | info->info.x11.wmwindow = WMwindow; |
| 417 | } |
| 418 | |
| 419 | |
| 420 | if ( SDL_VERSIONNUM(info->version.major, |
| 421 | info->version.minor, |
| 422 | info->version.patch) >= 1212 ) { |
| 423 | info->info.x11.gfxdisplay = GFX_Display; |
| 424 | } |
| 425 | |
| 426 | info->info.x11.lock_func = lock_display; |
| 427 | info->info.x11.unlock_func = unlock_display; |
| 428 | return(1); |
| 429 | } else { |
| 430 | SDL_SetError("Application not compiled with SDL %d.%d\n", |
| 431 | SDL_MAJOR_VERSION, SDL_MINOR_VERSION); |
| 432 | return(-1); |
| 433 | } |
| 434 | } |