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154 lines
4.4 KiB
C++
154 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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 Nokia Corporation code.
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*
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* The Initial Developer of the Original Code is Nokia Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Oleg Romashin <romaxa@gmail.com>
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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 GFX_SHARED_IMAGESURFACE_H
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#define GFX_SHARED_IMAGESURFACE_H
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#ifdef MOZ_X11
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#ifdef HAVE_XSHM
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#include "gfxASurface.h"
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#include "gfxImageSurface.h"
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#include "gfxPoint.h"
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#include <stdlib.h>
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#include <string.h>
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#ifdef MOZ_WIDGET_QT
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#include <QX11Info>
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#endif
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#ifdef MOZ_WIDGET_GTK2
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#include <gtk/gtk.h>
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#include <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#endif
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#ifdef MOZ_X11
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/extensions/XShm.h>
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#endif
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#include <sys/ipc.h>
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#include <sys/shm.h>
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class THEBES_API gfxSharedImageSurface : public gfxASurface {
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public:
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gfxSharedImageSurface();
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~gfxSharedImageSurface();
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// ImageSurface methods
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gfxImageFormat Format() const { return mFormat; }
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const gfxIntSize& GetSize() const { return mSize; }
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int Width() const { return mSize.width; }
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int Height() const { return mSize.height; }
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/**
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* Distance in bytes between the start of a line and the start of the
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* next line.
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*/
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int Stride() const { return mStride; }
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/**
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* Returns a pointer for the image data. Users of this function can
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* write to it, but must not attempt to free the buffer.
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*/
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unsigned char* Data() const { return mData; } // delete this data under us and die.
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/**
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* Returns the total size of the image data.
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*/
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int GetDataSize() const { return mStride*mSize.height; }
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/**
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* Returns a pointer for the X-image structure.
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*/
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XImage *image() const { return mXShmImage; }
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/**
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* Returns a gfxImageSurface as gfxASurface.
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*/
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already_AddRefed<gfxASurface> getASurface(void);
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/**
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* Construct an shared image surface and XImage
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* @param aSize The size of the buffer
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* @param aFormat Format of the data
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* @see gfxImageFormat
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* @param aShmId Shared Memory ID of data created outside,
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* if not specified, then class will allocate own shared memory
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* @display aDisplay display used for X-Image creation
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* if not specified, then used system default
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*
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*/
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bool Init(const gfxIntSize& aSize,
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gfxImageFormat aFormat = ImageFormatUnknown,
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int aDepth = 0,
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int aShmId = -1);
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/**
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* Returns the depth of image surface
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*/
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int Depth() const { return mDepth; }
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private:
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bool CreateInternal(int aShmid);
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long ComputeStride() const;
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inline bool ComputeDepth();
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inline bool ComputeFormat();
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unsigned int mDepth;
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int mShmId;
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gfxIntSize mSize;
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bool mOwnsData;
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unsigned char *mData;
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gfxImageFormat mFormat;
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long mStride;
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Display *mDisp;
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XShmSegmentInfo mShmInfo;
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XImage *mXShmImage;
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};
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#endif /* HAVE_XSHM */
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#endif /* MOZ_X11 */
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#endif /* GFX_SHARED_IMAGESURFACE_H */
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