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104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Code.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef mozilla_X11Util_h
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#define mozilla_X11Util_h
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// Utilities common to all X clients, regardless of UI toolkit.
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#if defined(MOZ_WIDGET_GTK2)
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# include <gdk/gdkx.h>
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#elif defined(MOZ_WIDGET_QT)
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// X11/X.h has #define CursorShape 0, but Qt's qnamespace.h defines
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// enum CursorShape { ... }. Good times!
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#undef CursorShape
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# include <QX11Info>
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#else
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# error Unknown toolkit
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#endif
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namespace mozilla {
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/**
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* Return the default X Display created and used by the UI toolkit.
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*/
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inline Display*
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DefaultXDisplay()
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{
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#if defined(MOZ_WIDGET_GTK2)
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return GDK_DISPLAY();
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#elif defined(MOZ_WIDGET_QT)
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return QX11Info::display();
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#endif
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}
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/**
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* Invoke XFree() on a pointer to memory allocated by Xlib (if the
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* pointer is nonnull) when this class goes out of scope.
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*/
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template<typename T>
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struct ScopedXFree
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{
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ScopedXFree(T* aPtr) : mPtr(aPtr) {}
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~ScopedXFree()
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{
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if (mPtr)
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XFree(mPtr);
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}
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operator T*() const { return get(); }
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T* operator->() const { return get(); }
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T* get() const { return mPtr; }
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private:
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T* mPtr;
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// disable these
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ScopedXFree(const ScopedXFree&);
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ScopedXFree& operator=(const ScopedXFree&);
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static void* operator new (size_t);
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static void operator delete (void*);
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};
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} // namespace mozilla
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#endif // mozilla_X11Util_h
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