gecko/gfx/thebes/public/gfxSharedImageSurface.h

149 lines
4.3 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* 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
* http://www.mozilla.org/MPL/
*
* 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 Nokia Corporation code.
*
* The Initial Developer of the Original Code is Nokia Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Oleg Romashin <romaxa@gmail.com>
*
* 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 GFX_SHARED_IMAGESURFACE_H
#define GFX_SHARED_IMAGESURFACE_H
#ifdef MOZ_X11
#ifdef HAVE_XSHM
#include "gfxASurface.h"
#include "gfxImageSurface.h"
#include "gfxPoint.h"
#include <stdlib.h>
#include <string.h>
#ifdef MOZ_WIDGET_QT
#include <QX11Info>
#endif
#ifdef MOZ_WIDGET_GTK2
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#endif
#ifdef MOZ_X11
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/XShm.h>
#endif
#include <sys/ipc.h>
#include <sys/shm.h>
class THEBES_API gfxSharedImageSurface : public gfxASurface {
public:
gfxSharedImageSurface();
~gfxSharedImageSurface();
// ImageSurface methods
gfxImageFormat Format() const { return mFormat; }
const gfxIntSize& GetSize() const { return mSize; }
int Width() const { return mSize.width; }
int Height() const { return mSize.height; }
/**
* Distance in bytes between the start of a line and the start of the
* next line.
*/
int Stride() const { return mStride; }
/**
* Returns a pointer for the image data. Users of this function can
* write to it, but must not attempt to free the buffer.
*/
unsigned char* Data() const { return mData; } // delete this data under us and die.
/**
* Returns the total size of the image data.
*/
int GetDataSize() const { return mStride*mSize.height; }
/**
* Returns a pointer for the X-image structure.
*/
XImage *image() const { return mXShmImage; }
/**
* Returns a gfxImageSurface as gfxASurface.
*/
already_AddRefed<gfxASurface> getASurface(void);
/**
* Construct an shared image surface and XImage
* @param aSize The size of the buffer
* @param aFormat Format of the data
* @see gfxImageFormat
* @param aShmId Shared Memory ID of data created outside,
* if not specified, then class will allocate own shared memory
* @display aDisplay display used for X-Image creation
* if not specified, then used system default
*
*/
bool Init(const gfxIntSize& aSize,
gfxImageFormat aFormat = ImageFormatUnknown,
int aShmId = -1,
Display *aDisplay = NULL);
private:
bool CreateInternal(int aShmid);
long ComputeStride() const;
inline bool ComputeDepth();
inline bool ComputeFormat();
unsigned int mDepth;
int mShmId;
gfxIntSize mSize;
bool mOwnsData;
unsigned char *mData;
gfxImageFormat mFormat;
long mStride;
Display *mDisp;
XShmSegmentInfo mShmInfo;
XImage *mXShmImage;
};
#endif /* HAVE_XSHM */
#endif /* MOZ_X11 */
#endif /* GFX_SHARED_IMAGESURFACE_H */