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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // This file defines utility functions for X11 (Linux only). This code has been | |
| 6 // ported from XCB since we can't use XCB on Ubuntu while its 32-bit support | |
| 7 // remains woefully incomplete. | |
| 8 | |
| 9 #include "app/x11_util.h" | |
| 10 | |
| 11 #include <gdk/gdk.h> | |
| 12 #include <gdk/gdkx.h> | |
| 13 #include <gtk/gtk.h> | |
| 14 | |
| 15 #include <sys/ipc.h> | |
| 16 #include <sys/shm.h> | |
| 17 | |
| 18 #include <list> | |
| 19 #include <set> | |
| 20 | |
| 21 #include "base/command_line.h" | |
| 22 #include "base/logging.h" | |
| 23 #include "base/stringprintf.h" | |
| 24 #include "base/string_number_conversions.h" | |
| 25 #include "base/threading/thread.h" | |
| 26 #include "app/x11_util_internal.h" | |
| 27 #include "gfx/rect.h" | |
| 28 #include "gfx/size.h" | |
| 29 | |
| 30 namespace x11_util { | |
| 31 | |
| 32 namespace { | |
| 33 | |
| 34 // Used to cache the XRenderPictFormat for a visual/display pair. | |
| 35 struct CachedPictFormat { | |
| 36 bool equals(Display* display, Visual* visual) const { | |
| 37 return display == this->display && visual == this->visual; | |
| 38 } | |
| 39 | |
| 40 Display* display; | |
| 41 Visual* visual; | |
| 42 XRenderPictFormat* format; | |
| 43 }; | |
| 44 | |
| 45 typedef std::list<CachedPictFormat> CachedPictFormats; | |
| 46 | |
| 47 // Returns the cache of pict formats. | |
| 48 CachedPictFormats* get_cached_pict_formats() { | |
| 49 static CachedPictFormats* formats = NULL; | |
| 50 if (!formats) | |
| 51 formats = new CachedPictFormats(); | |
| 52 return formats; | |
| 53 } | |
| 54 | |
| 55 // Maximum number of CachedPictFormats we keep around. | |
| 56 const size_t kMaxCacheSize = 5; | |
| 57 | |
| 58 int DefaultX11ErrorHandler(Display* d, XErrorEvent* e) { | |
| 59 LOG(ERROR) << GetErrorEventDescription(d, e); | |
| 60 return 0; | |
| 61 } | |
| 62 | |
| 63 int DefaultX11IOErrorHandler(Display* d) { | |
| 64 // If there's an IO error it likely means the X server has gone away | |
| 65 LOG(ERROR) << "X IO Error detected"; | |
| 66 _exit(1); | |
| 67 } | |
| 68 | |
| 69 } // namespace | |
| 70 | |
| 71 bool XDisplayExists() { | |
| 72 return (gdk_display_get_default() != NULL); | |
| 73 } | |
| 74 | |
| 75 Display* GetXDisplay() { | |
| 76 static Display* display = NULL; | |
| 77 | |
| 78 if (!display) | |
| 79 display = gdk_x11_get_default_xdisplay(); | |
| 80 | |
| 81 return display; | |
| 82 } | |
| 83 | |
| 84 static SharedMemorySupport DoQuerySharedMemorySupport(Display* dpy) { | |
| 85 // A temporary flag for tracking down shared memory problems. | |
| 86 // TODO(evanm): remove this. | |
| 87 if (CommandLine::ForCurrentProcess()->HasSwitch("disable-xshm")) | |
| 88 return SHARED_MEMORY_NONE; | |
| 89 | |
| 90 int dummy; | |
| 91 Bool pixmaps_supported; | |
| 92 // Query the server's support for XSHM. | |
| 93 if (!XShmQueryVersion(dpy, &dummy, &dummy, &pixmaps_supported)) | |
| 94 return SHARED_MEMORY_NONE; | |
| 95 | |
| 96 // Next we probe to see if shared memory will really work | |
| 97 int shmkey = shmget(IPC_PRIVATE, 1, 0666); | |
| 98 if (shmkey == -1) | |
| 99 return SHARED_MEMORY_NONE; | |
| 100 void* address = shmat(shmkey, NULL, 0); | |
| 101 // Mark the shared memory region for deletion | |
| 102 shmctl(shmkey, IPC_RMID, NULL); | |
| 103 | |
| 104 XShmSegmentInfo shminfo; | |
| 105 memset(&shminfo, 0, sizeof(shminfo)); | |
| 106 shminfo.shmid = shmkey; | |
| 107 | |
| 108 gdk_error_trap_push(); | |
| 109 bool result = XShmAttach(dpy, &shminfo); | |
| 110 XSync(dpy, False); | |
| 111 if (gdk_error_trap_pop()) | |
| 112 result = false; | |
| 113 shmdt(address); | |
| 114 if (!result) | |
| 115 return SHARED_MEMORY_NONE; | |
| 116 | |
| 117 XShmDetach(dpy, &shminfo); | |
| 118 return pixmaps_supported ? SHARED_MEMORY_PIXMAP : SHARED_MEMORY_PUTIMAGE; | |
| 119 } | |
| 120 | |
| 121 SharedMemorySupport QuerySharedMemorySupport(Display* dpy) { | |
| 122 static SharedMemorySupport shared_memory_support = SHARED_MEMORY_NONE; | |
| 123 static bool shared_memory_support_cached = false; | |
| 124 | |
| 125 if (shared_memory_support_cached) | |
| 126 return shared_memory_support; | |
| 127 | |
| 128 shared_memory_support = DoQuerySharedMemorySupport(dpy); | |
| 129 shared_memory_support_cached = true; | |
| 130 | |
| 131 return shared_memory_support; | |
| 132 } | |
| 133 | |
| 134 bool QueryRenderSupport(Display* dpy) { | |
| 135 static bool render_supported = false; | |
| 136 static bool render_supported_cached = false; | |
| 137 | |
| 138 if (render_supported_cached) | |
| 139 return render_supported; | |
| 140 | |
| 141 // We don't care about the version of Xrender since all the features which | |
| 142 // we use are included in every version. | |
| 143 int dummy; | |
| 144 render_supported = XRenderQueryExtension(dpy, &dummy, &dummy); | |
| 145 render_supported_cached = true; | |
| 146 | |
| 147 return render_supported; | |
| 148 } | |
| 149 | |
| 150 int GetDefaultScreen(Display* display) { | |
| 151 return XDefaultScreen(display); | |
| 152 } | |
| 153 | |
| 154 XID GetX11RootWindow() { | |
| 155 return GDK_WINDOW_XID(gdk_get_default_root_window()); | |
| 156 } | |
| 157 | |
| 158 bool GetCurrentDesktop(int* desktop) { | |
| 159 return GetIntProperty(GetX11RootWindow(), "_NET_CURRENT_DESKTOP", desktop); | |
| 160 } | |
| 161 | |
| 162 XID GetX11WindowFromGtkWidget(GtkWidget* widget) { | |
| 163 return GDK_WINDOW_XID(widget->window); | |
| 164 } | |
| 165 | |
| 166 XID GetX11WindowFromGdkWindow(GdkWindow* window) { | |
| 167 return GDK_WINDOW_XID(window); | |
| 168 } | |
| 169 | |
| 170 void* GetVisualFromGtkWidget(GtkWidget* widget) { | |
| 171 return GDK_VISUAL_XVISUAL(gtk_widget_get_visual(widget)); | |
| 172 } | |
| 173 | |
| 174 int BitsPerPixelForPixmapDepth(Display* dpy, int depth) { | |
| 175 int count; | |
| 176 XPixmapFormatValues* formats = XListPixmapFormats(dpy, &count); | |
| 177 if (!formats) | |
| 178 return -1; | |
| 179 | |
| 180 int bits_per_pixel = -1; | |
| 181 for (int i = 0; i < count; ++i) { | |
| 182 if (formats[i].depth == depth) { | |
| 183 bits_per_pixel = formats[i].bits_per_pixel; | |
| 184 break; | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 XFree(formats); | |
| 189 return bits_per_pixel; | |
| 190 } | |
| 191 | |
| 192 bool IsWindowVisible(XID window) { | |
| 193 XWindowAttributes win_attributes; | |
| 194 XGetWindowAttributes(GetXDisplay(), window, &win_attributes); | |
| 195 if (win_attributes.map_state != IsViewable) | |
| 196 return false; | |
| 197 // Some compositing window managers (notably kwin) do not actually unmap | |
| 198 // windows on desktop switch, so we also must check the current desktop. | |
| 199 int window_desktop, current_desktop; | |
| 200 return (!GetWindowDesktop(window, &window_desktop) || | |
| 201 !GetCurrentDesktop(¤t_desktop) || | |
| 202 window_desktop == kAllDesktops || | |
| 203 window_desktop == current_desktop); | |
| 204 } | |
| 205 | |
| 206 bool GetWindowRect(XID window, gfx::Rect* rect) { | |
| 207 Window root, child; | |
| 208 int x, y; | |
| 209 unsigned int width, height; | |
| 210 unsigned int border_width, depth; | |
| 211 | |
| 212 if (!XGetGeometry(GetXDisplay(), window, &root, &x, &y, | |
| 213 &width, &height, &border_width, &depth)) | |
| 214 return false; | |
| 215 | |
| 216 if (!XTranslateCoordinates(GetSecondaryDisplay(), window, root, | |
| 217 0, 0, &x, &y, &child)) | |
| 218 return false; | |
| 219 | |
| 220 *rect = gfx::Rect(x, y, width, height); | |
| 221 return true; | |
| 222 } | |
| 223 | |
| 224 bool GetIntProperty(XID window, const std::string& property_name, int* value) { | |
| 225 Atom property_atom = gdk_x11_get_xatom_by_name_for_display( | |
| 226 gdk_display_get_default(), property_name.c_str()); | |
| 227 | |
| 228 Atom type = None; | |
| 229 int format = 0; // size in bits of each item in 'property' | |
| 230 long unsigned int num_items = 0, remaining_bytes = 0; | |
| 231 unsigned char* property = NULL; | |
| 232 | |
| 233 int result = XGetWindowProperty(GetXDisplay(), | |
| 234 window, | |
| 235 property_atom, | |
| 236 0, // offset into property data to read | |
| 237 1, // max length to get | |
| 238 False, // deleted | |
| 239 AnyPropertyType, | |
| 240 &type, | |
| 241 &format, | |
| 242 &num_items, | |
| 243 &remaining_bytes, | |
| 244 &property); | |
| 245 if (result != Success) | |
| 246 return false; | |
| 247 | |
| 248 if (format != 32 || num_items != 1) { | |
| 249 XFree(property); | |
| 250 return false; | |
| 251 } | |
| 252 | |
| 253 *value = *(reinterpret_cast<int*>(property)); | |
| 254 XFree(property); | |
| 255 return true; | |
| 256 } | |
| 257 | |
| 258 bool GetIntArrayProperty(XID window, | |
| 259 const std::string& property_name, | |
| 260 std::vector<int>* value) { | |
| 261 Atom property_atom = gdk_x11_get_xatom_by_name_for_display( | |
| 262 gdk_display_get_default(), property_name.c_str()); | |
| 263 | |
| 264 Atom type = None; | |
| 265 int format = 0; // size in bits of each item in 'property' | |
| 266 long unsigned int num_items = 0, remaining_bytes = 0; | |
| 267 unsigned char* properties = NULL; | |
| 268 | |
| 269 int result = XGetWindowProperty(GetXDisplay(), | |
| 270 window, | |
| 271 property_atom, | |
| 272 0, // offset into property data to read | |
| 273 (~0L), // max length to get (all of them) | |
| 274 False, // deleted | |
| 275 AnyPropertyType, | |
| 276 &type, | |
| 277 &format, | |
| 278 &num_items, | |
| 279 &remaining_bytes, | |
| 280 &properties); | |
| 281 if (result != Success) | |
| 282 return false; | |
| 283 | |
| 284 if (format != 32) { | |
| 285 XFree(properties); | |
| 286 return false; | |
| 287 } | |
| 288 | |
| 289 int* int_properties = reinterpret_cast<int*>(properties); | |
| 290 value->clear(); | |
| 291 value->insert(value->begin(), int_properties, int_properties + num_items); | |
| 292 XFree(properties); | |
| 293 return true; | |
| 294 } | |
| 295 | |
| 296 bool GetStringProperty( | |
| 297 XID window, const std::string& property_name, std::string* value) { | |
| 298 Atom property_atom = gdk_x11_get_xatom_by_name_for_display( | |
| 299 gdk_display_get_default(), property_name.c_str()); | |
| 300 | |
| 301 Atom type = None; | |
| 302 int format = 0; // size in bits of each item in 'property' | |
| 303 long unsigned int num_items = 0, remaining_bytes = 0; | |
| 304 unsigned char* property = NULL; | |
| 305 | |
| 306 int result = XGetWindowProperty(GetXDisplay(), | |
| 307 window, | |
| 308 property_atom, | |
| 309 0, // offset into property data to read | |
| 310 1024, // max length to get | |
| 311 False, // deleted | |
| 312 AnyPropertyType, | |
| 313 &type, | |
| 314 &format, | |
| 315 &num_items, | |
| 316 &remaining_bytes, | |
| 317 &property); | |
| 318 if (result != Success) | |
| 319 return false; | |
| 320 | |
| 321 if (format != 8) { | |
| 322 XFree(property); | |
| 323 return false; | |
| 324 } | |
| 325 | |
| 326 value->assign(reinterpret_cast<char*>(property), num_items); | |
| 327 XFree(property); | |
| 328 return true; | |
| 329 } | |
| 330 | |
| 331 XID GetParentWindow(XID window) { | |
| 332 XID root = None; | |
| 333 XID parent = None; | |
| 334 XID* children = NULL; | |
| 335 unsigned int num_children = 0; | |
| 336 XQueryTree(GetXDisplay(), window, &root, &parent, &children, &num_children); | |
| 337 if (children) | |
| 338 XFree(children); | |
| 339 return parent; | |
| 340 } | |
| 341 | |
| 342 XID GetHighestAncestorWindow(XID window, XID root) { | |
| 343 while (true) { | |
| 344 XID parent = x11_util::GetParentWindow(window); | |
| 345 if (parent == None) | |
| 346 return None; | |
| 347 if (parent == root) | |
| 348 return window; | |
| 349 window = parent; | |
| 350 } | |
| 351 } | |
| 352 | |
| 353 bool GetWindowDesktop(XID window, int* desktop) { | |
| 354 return GetIntProperty(window, "_NET_WM_DESKTOP", desktop); | |
| 355 } | |
| 356 | |
| 357 // Returns true if |window| is a named window. | |
| 358 bool IsWindowNamed(XID window) { | |
| 359 XTextProperty prop; | |
| 360 if (!XGetWMName(GetXDisplay(), window, &prop) || !prop.value) | |
| 361 return false; | |
| 362 | |
| 363 XFree(prop.value); | |
| 364 return true; | |
| 365 } | |
| 366 | |
| 367 bool EnumerateChildren(EnumerateWindowsDelegate* delegate, XID window, | |
| 368 const int max_depth, int depth) { | |
| 369 if (depth > max_depth) | |
| 370 return false; | |
| 371 | |
| 372 XID root, parent, *children; | |
| 373 unsigned int num_children; | |
| 374 int status = XQueryTree(GetXDisplay(), window, &root, &parent, &children, | |
| 375 &num_children); | |
| 376 if (status == 0) | |
| 377 return false; | |
| 378 | |
| 379 std::set<XID> windows; | |
| 380 for (unsigned int i = 0; i < num_children; i++) | |
| 381 windows.insert(children[i]); | |
| 382 | |
| 383 XFree(children); | |
| 384 | |
| 385 // XQueryTree returns the children of |window| in bottom-to-top order, so | |
| 386 // reverse-iterate the list to check the windows from top-to-bottom. | |
| 387 std::set<XID>::reverse_iterator iter; | |
| 388 for (iter = windows.rbegin(); iter != windows.rend(); iter++) { | |
| 389 if (IsWindowNamed(*iter) && delegate->ShouldStopIterating(*iter)) | |
| 390 return true; | |
| 391 } | |
| 392 | |
| 393 // If we're at this point, we didn't find the window we're looking for at the | |
| 394 // current level, so we need to recurse to the next level. We use a second | |
| 395 // loop because the recursion and call to XQueryTree are expensive and is only | |
| 396 // needed for a small number of cases. | |
| 397 if (++depth <= max_depth) { | |
| 398 for (iter = windows.rbegin(); iter != windows.rend(); iter++) { | |
| 399 if (EnumerateChildren(delegate, *iter, max_depth, depth)) | |
| 400 return true; | |
| 401 } | |
| 402 } | |
| 403 | |
| 404 return false; | |
| 405 } | |
| 406 | |
| 407 bool EnumerateAllWindows(EnumerateWindowsDelegate* delegate, int max_depth) { | |
| 408 XID root = GetX11RootWindow(); | |
| 409 return EnumerateChildren(delegate, root, max_depth, 0); | |
| 410 } | |
| 411 | |
| 412 bool GetXWindowStack(std::vector<XID>* windows) { | |
| 413 windows->clear(); | |
| 414 | |
| 415 static Atom atom = XInternAtom(GetXDisplay(), | |
| 416 "_NET_CLIENT_LIST_STACKING", False); | |
| 417 | |
| 418 Atom type; | |
| 419 int format; | |
| 420 unsigned long count; | |
| 421 unsigned long bytes_after; | |
| 422 unsigned char *data = NULL; | |
| 423 if (XGetWindowProperty(GetXDisplay(), | |
| 424 GetX11RootWindow(), | |
| 425 atom, | |
| 426 0, // offset | |
| 427 ~0L, // length | |
| 428 False, // delete | |
| 429 AnyPropertyType, // requested type | |
| 430 &type, | |
| 431 &format, | |
| 432 &count, | |
| 433 &bytes_after, | |
| 434 &data) != Success) { | |
| 435 return false; | |
| 436 } | |
| 437 | |
| 438 bool result = false; | |
| 439 if (type == XA_WINDOW && format == 32 && data && count > 0) { | |
| 440 result = true; | |
| 441 XID* stack = reinterpret_cast<XID*>(data); | |
| 442 for (unsigned long i = 0; i < count; i++) | |
| 443 windows->insert(windows->begin(), stack[i]); | |
| 444 } | |
| 445 | |
| 446 if (data) | |
| 447 XFree(data); | |
| 448 | |
| 449 return result; | |
| 450 } | |
| 451 | |
| 452 void RestackWindow(XID window, XID sibling, bool above) { | |
| 453 XWindowChanges changes; | |
| 454 changes.sibling = sibling; | |
| 455 changes.stack_mode = above ? Above : Below; | |
| 456 XConfigureWindow(GetXDisplay(), window, CWSibling | CWStackMode, &changes); | |
| 457 } | |
| 458 | |
| 459 XSharedMemoryId AttachSharedMemory(Display* display, int shared_memory_key) { | |
| 460 DCHECK(QuerySharedMemorySupport(display)); | |
| 461 | |
| 462 XShmSegmentInfo shminfo; | |
| 463 memset(&shminfo, 0, sizeof(shminfo)); | |
| 464 shminfo.shmid = shared_memory_key; | |
| 465 | |
| 466 // This function is only called if QuerySharedMemorySupport returned true. In | |
| 467 // which case we've already succeeded in having the X server attach to one of | |
| 468 // our shared memory segments. | |
| 469 if (!XShmAttach(display, &shminfo)) | |
| 470 NOTREACHED(); | |
| 471 | |
| 472 return shminfo.shmseg; | |
| 473 } | |
| 474 | |
| 475 void DetachSharedMemory(Display* display, XSharedMemoryId shmseg) { | |
| 476 DCHECK(QuerySharedMemorySupport(display)); | |
| 477 | |
| 478 XShmSegmentInfo shminfo; | |
| 479 memset(&shminfo, 0, sizeof(shminfo)); | |
| 480 shminfo.shmseg = shmseg; | |
| 481 | |
| 482 if (!XShmDetach(display, &shminfo)) | |
| 483 NOTREACHED(); | |
| 484 } | |
| 485 | |
| 486 XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap) { | |
| 487 XID picture = XRenderCreatePicture( | |
| 488 display, pixmap, GetRenderARGB32Format(display), 0, NULL); | |
| 489 | |
| 490 return picture; | |
| 491 } | |
| 492 | |
| 493 void PutARGBImage(Display* display, void* visual, int depth, XID pixmap, | |
| 494 void* pixmap_gc, const uint8* data, int width, int height) { | |
| 495 // TODO(scherkus): potential performance impact... consider passing in as a | |
| 496 // parameter. | |
| 497 int pixmap_bpp = BitsPerPixelForPixmapDepth(display, depth); | |
| 498 | |
| 499 XImage image; | |
| 500 memset(&image, 0, sizeof(image)); | |
| 501 | |
| 502 image.width = width; | |
| 503 image.height = height; | |
| 504 image.format = ZPixmap; | |
| 505 image.byte_order = LSBFirst; | |
| 506 image.bitmap_unit = 8; | |
| 507 image.bitmap_bit_order = LSBFirst; | |
| 508 image.depth = depth; | |
| 509 image.bits_per_pixel = pixmap_bpp; | |
| 510 image.bytes_per_line = width * pixmap_bpp / 8; | |
| 511 | |
| 512 if (pixmap_bpp == 32) { | |
| 513 image.red_mask = 0xff0000; | |
| 514 image.green_mask = 0xff00; | |
| 515 image.blue_mask = 0xff; | |
| 516 | |
| 517 // If the X server depth is already 32-bits and the color masks match, | |
| 518 // then our job is easy. | |
| 519 Visual* vis = static_cast<Visual*>(visual); | |
| 520 if (image.red_mask == vis->red_mask && | |
| 521 image.green_mask == vis->green_mask && | |
| 522 image.blue_mask == vis->blue_mask) { | |
| 523 image.data = const_cast<char*>(reinterpret_cast<const char*>(data)); | |
| 524 XPutImage(display, pixmap, static_cast<GC>(pixmap_gc), &image, | |
| 525 0, 0 /* source x, y */, 0, 0 /* dest x, y */, | |
| 526 width, height); | |
| 527 } else { | |
| 528 // Otherwise, we need to shuffle the colors around. Assume red and blue | |
| 529 // need to be swapped. | |
| 530 // | |
| 531 // It's possible to use some fancy SSE tricks here, but since this is the | |
| 532 // slow path anyway, we do it slowly. | |
| 533 | |
| 534 uint8_t* bitmap32 = static_cast<uint8_t*>(malloc(4 * width * height)); | |
| 535 if (!bitmap32) | |
| 536 return; | |
| 537 uint8_t* const orig_bitmap32 = bitmap32; | |
| 538 const uint32_t* bitmap_in = reinterpret_cast<const uint32_t*>(data); | |
| 539 for (int y = 0; y < height; ++y) { | |
| 540 for (int x = 0; x < width; ++x) { | |
| 541 const uint32_t pixel = *(bitmap_in++); | |
| 542 bitmap32[0] = (pixel >> 16) & 0xff; // Red | |
| 543 bitmap32[1] = (pixel >> 8) & 0xff; // Green | |
| 544 bitmap32[2] = pixel & 0xff; // Blue | |
| 545 bitmap32[3] = (pixel >> 24) & 0xff; // Alpha | |
| 546 bitmap32 += 4; | |
| 547 } | |
| 548 } | |
| 549 image.data = reinterpret_cast<char*>(orig_bitmap32); | |
| 550 XPutImage(display, pixmap, static_cast<GC>(pixmap_gc), &image, | |
| 551 0, 0 /* source x, y */, 0, 0 /* dest x, y */, | |
| 552 width, height); | |
| 553 free(orig_bitmap32); | |
| 554 } | |
| 555 } else if (pixmap_bpp == 16) { | |
| 556 // Some folks have VNC setups which still use 16-bit visuals and VNC | |
| 557 // doesn't include Xrender. | |
| 558 | |
| 559 uint16_t* bitmap16 = static_cast<uint16_t*>(malloc(2 * width * height)); | |
| 560 if (!bitmap16) | |
| 561 return; | |
| 562 uint16_t* const orig_bitmap16 = bitmap16; | |
| 563 const uint32_t* bitmap_in = reinterpret_cast<const uint32_t*>(data); | |
| 564 for (int y = 0; y < height; ++y) { | |
| 565 for (int x = 0; x < width; ++x) { | |
| 566 const uint32_t pixel = *(bitmap_in++); | |
| 567 uint16_t out_pixel = ((pixel >> 8) & 0xf800) | | |
| 568 ((pixel >> 5) & 0x07e0) | | |
| 569 ((pixel >> 3) & 0x001f); | |
| 570 *(bitmap16++) = out_pixel; | |
| 571 } | |
| 572 } | |
| 573 | |
| 574 image.data = reinterpret_cast<char*>(orig_bitmap16); | |
| 575 image.red_mask = 0xf800; | |
| 576 image.green_mask = 0x07e0; | |
| 577 image.blue_mask = 0x001f; | |
| 578 | |
| 579 XPutImage(display, pixmap, static_cast<GC>(pixmap_gc), &image, | |
| 580 0, 0 /* source x, y */, 0, 0 /* dest x, y */, | |
| 581 width, height); | |
| 582 free(orig_bitmap16); | |
| 583 } else { | |
| 584 LOG(FATAL) << "Sorry, we don't support your visual depth without " | |
| 585 "Xrender support (depth:" << depth | |
| 586 << " bpp:" << pixmap_bpp << ")"; | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 void FreePicture(Display* display, XID picture) { | |
| 591 XRenderFreePicture(display, picture); | |
| 592 } | |
| 593 | |
| 594 void FreePixmap(Display* display, XID pixmap) { | |
| 595 XFreePixmap(display, pixmap); | |
| 596 } | |
| 597 | |
| 598 // Called on BACKGROUND_X11 thread. | |
| 599 Display* GetSecondaryDisplay() { | |
| 600 static Display* display = NULL; | |
| 601 if (!display) { | |
| 602 display = XOpenDisplay(NULL); | |
| 603 CHECK(display); | |
| 604 } | |
| 605 | |
| 606 return display; | |
| 607 } | |
| 608 | |
| 609 // Called on BACKGROUND_X11 thread. | |
| 610 bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height, | |
| 611 XID window) { | |
| 612 Window root_window, child_window; | |
| 613 unsigned border_width, depth; | |
| 614 int temp; | |
| 615 | |
| 616 if (!XGetGeometry(GetSecondaryDisplay(), window, &root_window, &temp, &temp, | |
| 617 width, height, &border_width, &depth)) | |
| 618 return false; | |
| 619 if (!XTranslateCoordinates(GetSecondaryDisplay(), window, root_window, | |
| 620 0, 0 /* input x, y */, x, y /* output x, y */, | |
| 621 &child_window)) | |
| 622 return false; | |
| 623 | |
| 624 return true; | |
| 625 } | |
| 626 | |
| 627 // Called on BACKGROUND_X11 thread. | |
| 628 bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window) { | |
| 629 XID root_window, *children; | |
| 630 unsigned num_children; | |
| 631 | |
| 632 Status s = XQueryTree(GetSecondaryDisplay(), window, &root_window, | |
| 633 parent_window, &children, &num_children); | |
| 634 if (!s) | |
| 635 return false; | |
| 636 | |
| 637 if (children) | |
| 638 XFree(children); | |
| 639 | |
| 640 *parent_is_root = root_window == *parent_window; | |
| 641 return true; | |
| 642 } | |
| 643 | |
| 644 bool GetWindowManagerName(std::string* wm_name) { | |
| 645 DCHECK(wm_name); | |
| 646 int wm_window = 0; | |
| 647 if (!x11_util::GetIntProperty(x11_util::GetX11RootWindow(), | |
| 648 "_NET_SUPPORTING_WM_CHECK", | |
| 649 &wm_window)) { | |
| 650 return false; | |
| 651 } | |
| 652 | |
| 653 // It's possible that a window manager started earlier in this X session left | |
| 654 // a stale _NET_SUPPORTING_WM_CHECK property when it was replaced by a | |
| 655 // non-EWMH window manager, so we trap errors in the following requests to | |
| 656 // avoid crashes (issue 23860). | |
| 657 | |
| 658 // EWMH requires the supporting-WM window to also have a | |
| 659 // _NET_SUPPORTING_WM_CHECK property pointing to itself (to avoid a stale | |
| 660 // property referencing an ID that's been recycled for another window), so we | |
| 661 // check that too. | |
| 662 gdk_error_trap_push(); | |
| 663 int wm_window_property = 0; | |
| 664 bool result = x11_util::GetIntProperty( | |
| 665 wm_window, "_NET_SUPPORTING_WM_CHECK", &wm_window_property); | |
| 666 gdk_flush(); | |
| 667 bool got_error = gdk_error_trap_pop(); | |
| 668 if (got_error || !result || wm_window_property != wm_window) | |
| 669 return false; | |
| 670 | |
| 671 gdk_error_trap_push(); | |
| 672 result = x11_util::GetStringProperty( | |
| 673 static_cast<XID>(wm_window), "_NET_WM_NAME", wm_name); | |
| 674 gdk_flush(); | |
| 675 got_error = gdk_error_trap_pop(); | |
| 676 return !got_error && result; | |
| 677 } | |
| 678 | |
| 679 static cairo_status_t SnapshotCallback( | |
| 680 void *closure, const unsigned char *data, unsigned int length) { | |
| 681 std::vector<unsigned char>* png_representation = | |
| 682 static_cast<std::vector<unsigned char>*>(closure); | |
| 683 | |
| 684 size_t old_size = png_representation->size(); | |
| 685 png_representation->resize(old_size + length); | |
| 686 memcpy(&(*png_representation)[old_size], data, length); | |
| 687 return CAIRO_STATUS_SUCCESS; | |
| 688 } | |
| 689 | |
| 690 void GrabWindowSnapshot(GtkWindow* gtk_window, | |
| 691 std::vector<unsigned char>* png_representation) { | |
| 692 GdkWindow* gdk_window = GTK_WIDGET(gtk_window)->window; | |
| 693 Display* display = GDK_WINDOW_XDISPLAY(gdk_window); | |
| 694 XID win = GDK_WINDOW_XID(gdk_window); | |
| 695 XWindowAttributes attr; | |
| 696 if (XGetWindowAttributes(display, win, &attr) == 0) { | |
| 697 LOG(ERROR) << "Couldn't get window attributes"; | |
| 698 return; | |
| 699 } | |
| 700 XImage* image = XGetImage( | |
| 701 display, win, 0, 0, attr.width, attr.height, AllPlanes, ZPixmap); | |
| 702 if (!image) { | |
| 703 LOG(ERROR) << "Couldn't get image"; | |
| 704 return; | |
| 705 } | |
| 706 if (image->depth != 24) { | |
| 707 LOG(ERROR)<< "Unsupported image depth " << image->depth; | |
| 708 return; | |
| 709 } | |
| 710 cairo_surface_t* surface = | |
| 711 cairo_image_surface_create_for_data( | |
| 712 reinterpret_cast<unsigned char*>(image->data), | |
| 713 CAIRO_FORMAT_RGB24, | |
| 714 image->width, | |
| 715 image->height, | |
| 716 image->bytes_per_line); | |
| 717 | |
| 718 if (!surface) { | |
| 719 LOG(ERROR) << "Unable to create Cairo surface from XImage data"; | |
| 720 return; | |
| 721 } | |
| 722 cairo_surface_write_to_png_stream( | |
| 723 surface, SnapshotCallback, png_representation); | |
| 724 cairo_surface_destroy(surface); | |
| 725 } | |
| 726 | |
| 727 bool ChangeWindowDesktop(XID window, XID destination) { | |
| 728 int desktop; | |
| 729 if (!GetWindowDesktop(destination, &desktop)) | |
| 730 return false; | |
| 731 | |
| 732 // If |window| is sticky, use the current desktop. | |
| 733 if (desktop == kAllDesktops && | |
| 734 !GetCurrentDesktop(&desktop)) | |
| 735 return false; | |
| 736 | |
| 737 XEvent event; | |
| 738 event.xclient.type = ClientMessage; | |
| 739 event.xclient.window = window; | |
| 740 event.xclient.message_type = gdk_x11_get_xatom_by_name_for_display( | |
| 741 gdk_display_get_default(), "_NET_WM_DESKTOP"); | |
| 742 event.xclient.format = 32; | |
| 743 event.xclient.data.l[0] = desktop; | |
| 744 event.xclient.data.l[1] = 1; // source indication | |
| 745 | |
| 746 int result = XSendEvent(GetXDisplay(), GetX11RootWindow(), False, | |
| 747 SubstructureNotifyMask, &event); | |
| 748 return result == Success; | |
| 749 } | |
| 750 | |
| 751 void SetDefaultX11ErrorHandlers() { | |
| 752 SetX11ErrorHandlers(NULL, NULL); | |
| 753 } | |
| 754 | |
| 755 // ---------------------------------------------------------------------------- | |
| 756 // These functions are declared in x11_util_internal.h because they require | |
| 757 // XLib.h to be included, and it conflicts with many other headers. | |
| 758 XRenderPictFormat* GetRenderARGB32Format(Display* dpy) { | |
| 759 static XRenderPictFormat* pictformat = NULL; | |
| 760 if (pictformat) | |
| 761 return pictformat; | |
| 762 | |
| 763 // First look for a 32-bit format which ignores the alpha value | |
| 764 XRenderPictFormat templ; | |
| 765 templ.depth = 32; | |
| 766 templ.type = PictTypeDirect; | |
| 767 templ.direct.red = 16; | |
| 768 templ.direct.green = 8; | |
| 769 templ.direct.blue = 0; | |
| 770 templ.direct.redMask = 0xff; | |
| 771 templ.direct.greenMask = 0xff; | |
| 772 templ.direct.blueMask = 0xff; | |
| 773 templ.direct.alphaMask = 0; | |
| 774 | |
| 775 static const unsigned long kMask = | |
| 776 PictFormatType | PictFormatDepth | | |
| 777 PictFormatRed | PictFormatRedMask | | |
| 778 PictFormatGreen | PictFormatGreenMask | | |
| 779 PictFormatBlue | PictFormatBlueMask | | |
| 780 PictFormatAlphaMask; | |
| 781 | |
| 782 pictformat = XRenderFindFormat(dpy, kMask, &templ, 0 /* first result */); | |
| 783 | |
| 784 if (!pictformat) { | |
| 785 // Not all X servers support xRGB32 formats. However, the XRENDER spec says | |
| 786 // that they must support an ARGB32 format, so we can always return that. | |
| 787 pictformat = XRenderFindStandardFormat(dpy, PictStandardARGB32); | |
| 788 CHECK(pictformat) << "XRENDER ARGB32 not supported."; | |
| 789 } | |
| 790 | |
| 791 return pictformat; | |
| 792 } | |
| 793 | |
| 794 XRenderPictFormat* GetRenderVisualFormat(Display* dpy, Visual* visual) { | |
| 795 DCHECK(QueryRenderSupport(dpy)); | |
| 796 | |
| 797 CachedPictFormats* formats = get_cached_pict_formats(); | |
| 798 | |
| 799 for (CachedPictFormats::const_iterator i = formats->begin(); | |
| 800 i != formats->end(); ++i) { | |
| 801 if (i->equals(dpy, visual)) | |
| 802 return i->format; | |
| 803 } | |
| 804 | |
| 805 // Not cached, look up the value. | |
| 806 XRenderPictFormat* pictformat = XRenderFindVisualFormat(dpy, visual); | |
| 807 CHECK(pictformat) << "XRENDER does not support default visual"; | |
| 808 | |
| 809 // And store it in the cache. | |
| 810 CachedPictFormat cached_value; | |
| 811 cached_value.visual = visual; | |
| 812 cached_value.display = dpy; | |
| 813 cached_value.format = pictformat; | |
| 814 formats->push_front(cached_value); | |
| 815 | |
| 816 if (formats->size() == kMaxCacheSize) { | |
| 817 formats->pop_back(); | |
| 818 // We should really only have at most 2 display/visual combinations: | |
| 819 // one for normal browser windows, and possibly another for an argb window | |
| 820 // created to display a menu. | |
| 821 // | |
| 822 // If we get here it's not fatal, we just need to make sure we aren't | |
| 823 // always blowing away the cache. If we are, then we should figure out why | |
| 824 // and make it bigger. | |
| 825 NOTREACHED(); | |
| 826 } | |
| 827 | |
| 828 return pictformat; | |
| 829 } | |
| 830 | |
| 831 void SetX11ErrorHandlers(XErrorHandler error_handler, | |
| 832 XIOErrorHandler io_error_handler) { | |
| 833 XSetErrorHandler(error_handler ? error_handler : DefaultX11ErrorHandler); | |
| 834 XSetIOErrorHandler( | |
| 835 io_error_handler ? io_error_handler : DefaultX11IOErrorHandler); | |
| 836 } | |
| 837 | |
| 838 std::string GetErrorEventDescription(Display *dpy, | |
| 839 XErrorEvent *error_event) { | |
| 840 char error_str[256]; | |
| 841 char request_str[256]; | |
| 842 | |
| 843 XGetErrorText(dpy, error_event->error_code, error_str, sizeof(error_str)); | |
| 844 | |
| 845 strncpy(request_str, "Unknown", sizeof(request_str)); | |
| 846 if (error_event->request_code < 128) { | |
| 847 std::string num = base::UintToString(error_event->request_code); | |
| 848 XGetErrorDatabaseText( | |
| 849 dpy, "XRequest", num.c_str(), "Unknown", request_str, | |
| 850 sizeof(request_str)); | |
| 851 } else { | |
| 852 int num_ext; | |
| 853 char **ext_list = XListExtensions(dpy, &num_ext); | |
| 854 | |
| 855 for (int i = 0; i < num_ext; i++) { | |
| 856 int ext_code, first_event, first_error; | |
| 857 XQueryExtension(dpy, ext_list[i], &ext_code, &first_event, &first_error); | |
| 858 if (error_event->request_code == ext_code) { | |
| 859 std::string msg = StringPrintf( | |
| 860 "%s.%d", ext_list[i], error_event->minor_code); | |
| 861 XGetErrorDatabaseText( | |
| 862 dpy, "XRequest", msg.c_str(), "Unknown", request_str, | |
| 863 sizeof(request_str)); | |
| 864 break; | |
| 865 } | |
| 866 } | |
| 867 XFreeExtensionList(ext_list); | |
| 868 } | |
| 869 | |
| 870 return base::StringPrintf( | |
| 871 "X Error detected: serial %lu, error_code %u (%s), " | |
| 872 "request_code %u minor_code %u (%s)", | |
| 873 error_event->serial, error_event->error_code, error_str, | |
| 874 error_event->request_code, error_event->minor_code, request_str); | |
| 875 } | |
| 876 // ---------------------------------------------------------------------------- | |
| 877 // End of x11_util_internal.h | |
| 878 | |
| 879 | |
| 880 } // namespace x11_util | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 6257006:
Move a bunch of random other files to src/ui/base... (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/