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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
* The Original Code is the Mozilla browser.
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
* Contributor(s):
* Chris Jones <>
* Oleg Romashin <>
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
* ***** END LICENSE BLOCK ***** */
#ifndef __mozilla_widget_nsShmImage_h__
#define __mozilla_widget_nsShmImage_h__
#include "mozilla/ipc/SharedMemorySysV.h"
#if defined(MOZ_X11) && defined(MOZ_HAVE_SHAREDMEMORYSYSV)
#include "nsIWidget.h"
#include "gfxASurface.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/XShm.h>
#if defined(MOZ_WIDGET_GTK2) || defined(MOZ_WIDGET_GTK3)
#define DISPLAY gdk_x11_get_default_xdisplay
#elif defined(MOZ_WIDGET_QT)
#include "QX11Info"
#define DISPLAY QX11Info().display
class QRect;
class QWidget;
class nsShmImage {
typedef mozilla::ipc::SharedMemorySysV SharedMemorySysV;
typedef gfxASurface::gfxImageFormat Format;
static bool UseShm();
static already_AddRefed<nsShmImage>
Create(const gfxIntSize& aSize, Visual* aVisual, unsigned int aDepth);
static already_AddRefed<gfxASurface>
EnsureShmImage(const gfxIntSize& aSize, Visual* aVisual, unsigned int aDepth,
nsRefPtr<nsShmImage>& aImage);
~nsShmImage() {
if (mImage) {
XSync(DISPLAY(), False);
if (mXAttached) {
XShmDetach(DISPLAY(), &mInfo);
already_AddRefed<gfxASurface> AsSurface();
#if defined(MOZ_WIDGET_GTK2)
void Put(GdkWindow* aWindow, GdkRectangle* aRects, GdkRectangle* aEnd);
#elif defined(MOZ_WIDGET_GTK3)
void Put(GdkWindow* aWindow, cairo_rectangle_list_t* aRects);
#elif defined(MOZ_WIDGET_QT)
void Put(QWidget* aWindow, QRect& aRect);
gfxIntSize Size() const { return mSize; }
: mImage(nsnull)
, mXAttached(false)
{ mInfo.shmid = SharedMemorySysV::NULLHandle(); }
nsRefPtr<SharedMemorySysV> mSegment;
XImage* mImage;
XShmSegmentInfo mInfo;
gfxIntSize mSize;
Format mFormat;
bool mXAttached;
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