vcl/unx/x11/xlimits.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <sal/log.hxx>
  11 #include <unx/x11/xlimits.hxx>
  12
  13 Pixmap limitXCreatePixmap(Display *display, Drawable d, unsigned int width, unsigned int height, unsigned int depth)
  14 {
  15     // The X protocol request CreatePixmap puts an upper bound
  16     // of 16 bit to the size. Beyond that there may be implementation
  17     // limits of the Xserver; which we should catch by a failed XCreatePixmap
  18     // call. However extra large values should be caught here since we'd run into
  19     // 16 bit truncation here without noticing.
  20     //
  21     // see, e.g. moz#424333
  22     if (width > SAL_MAX_INT16 || height > SAL_MAX_INT16)
  23     {
  24         SAL_WARN("vcl", "overlarge pixmap: " << width << " x " << height);
  25         return None;
  26     }
  27     return XCreatePixmap(display, d, width, height, depth);
  28 }
  29
  30 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */