gfx/src/X11Util.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=8 et :
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "X11Util.h"
   9 #include "nsDebug.h"          // for NS_ASSERTION, etc
  10 #include "MainThreadUtils.h"  // for NS_IsMainThread
  11
  12 namespace mozilla {
  13
  14 void FindVisualAndDepth(Display* aDisplay, VisualID aVisualID, Visual** aVisual,
  15                         int* aDepth) {
  16   const Screen* screen = DefaultScreenOfDisplay(aDisplay);
  17
  18   for (int d = 0; d < screen->ndepths; d++) {
  19     Depth* d_info = &screen->depths[d];
  20     for (int v = 0; v < d_info->nvisuals; v++) {
  21       Visual* visual = &d_info->visuals[v];
  22       if (visual->visualid == aVisualID) {
  23         *aVisual = visual;
  24         *aDepth = d_info->depth;
  25         return;
  26       }
  27     }
  28   }
  29
  30   NS_ASSERTION(aVisualID == X11None, "VisualID not on Screen.");
  31   *aVisual = nullptr;
  32   *aDepth = 0;
  33 }
  34
  35 void FinishX(Display* aDisplay) {
  36   unsigned long lastRequest = NextRequest(aDisplay) - 1;
  37   if (lastRequest == LastKnownRequestProcessed(aDisplay)) return;
  38
  39   XSync(aDisplay, X11False);
  40 }
  41
  42 }  // namespace mozilla