2007-03-22 10:30:00 -07:00
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/* -*- 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 Oracle Corporation code.
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*
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* The Initial Developer of the Original Code is Oracle 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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* Stuart Parmenter <pavlov@pavlov.net>
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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_IMAGESURFACE_H
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#define GFX_IMAGESURFACE_H
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#include "gfxASurface.h"
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#include "gfxPoint.h"
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// ARGB -- raw buffer.. wont be changed.. good for storing data.
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2010-09-15 09:02:42 -07:00
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class gfxSubimageSurface;
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2007-03-22 10:30:00 -07:00
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/**
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* A raw image buffer. The format can be set in the constructor. Its main
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* purpose is for storing read-only images and using it as a source surface,
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* but it can also be drawn to.
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*/
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class THEBES_API gfxImageSurface : public gfxASurface {
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public:
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/**
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2008-07-09 01:22:20 -07:00
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* Construct an image surface around an existing buffer of image data.
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* @param aData A buffer containing the image data
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* @param aSize The size of the buffer
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* @param aStride The stride of the buffer
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2007-03-22 10:30:00 -07:00
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* @param format Format of the data
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*
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* @see gfxImageFormat
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2008-07-09 01:22:20 -07:00
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*/
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gfxImageSurface(unsigned char *aData, const gfxIntSize& aSize,
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long aStride, gfxImageFormat aFormat);
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/**
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* Construct an image surface.
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* @param aSize The size of the buffer
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* @param format Format of the data
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2007-03-22 10:30:00 -07:00
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*
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2008-07-09 01:22:20 -07:00
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* @see gfxImageFormat
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2007-03-22 10:30:00 -07:00
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*/
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gfxImageSurface(const gfxIntSize& size, gfxImageFormat format);
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gfxImageSurface(cairo_surface_t *csurf);
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virtual ~gfxImageSurface();
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// ImageSurface methods
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gfxImageFormat Format() const { return mFormat; }
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2010-09-07 17:36:57 -07:00
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virtual const gfxIntSize GetSize() const { return mSize; }
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2008-06-10 16:46:32 -07:00
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PRInt32 Width() const { return mSize.width; }
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PRInt32 Height() const { return mSize.height; }
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2007-03-22 10:30:00 -07:00
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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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2008-06-10 16:46:32 -07:00
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PRInt32 Stride() const { return mStride; }
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2007-03-22 10:30:00 -07:00
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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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2008-06-10 16:46:32 -07:00
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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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PRInt32 GetDataSize() const { return mStride*mSize.height; }
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2007-03-22 10:30:00 -07:00
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2008-02-05 22:48:47 -08:00
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/* Fast copy from another image surface; returns TRUE if successful, FALSE otherwise */
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PRBool CopyFrom (gfxImageSurface *other);
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2010-09-15 09:02:42 -07:00
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/* return new Subimage with pointing to original image starting from aRect.pos
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* and size of aRect.size. New subimage keeping current image reference
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*/
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already_AddRefed<gfxSubimageSurface> GetSubimage(const gfxRect& aRect);
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2010-11-11 12:31:22 -08:00
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virtual already_AddRefed<gfxImageSurface> GetAsImageSurface();
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2011-03-09 09:27:37 -08:00
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/** See gfxASurface.h. */
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NS_OVERRIDE
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virtual void MovePixels(const nsIntRect& aSourceRect,
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const nsIntPoint& aDestTopLeft);
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2010-05-13 08:52:59 -07:00
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protected:
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gfxImageSurface();
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2010-10-25 10:57:13 -07:00
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void InitWithData(unsigned char *aData, const gfxIntSize& aSize,
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long aStride, gfxImageFormat aFormat);
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2010-05-13 08:52:59 -07:00
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void InitFromSurface(cairo_surface_t *csurf);
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2011-01-04 08:40:54 -08:00
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long ComputeStride() const { return ComputeStride(mSize, mFormat); }
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static long ComputeStride(const gfxIntSize&, gfxImageFormat);
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2007-03-22 10:30:00 -07:00
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gfxIntSize mSize;
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PRBool mOwnsData;
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unsigned char *mData;
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gfxImageFormat mFormat;
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long mStride;
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};
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2010-09-15 09:02:42 -07:00
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class THEBES_API gfxSubimageSurface : public gfxImageSurface {
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protected:
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friend class gfxImageSurface;
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gfxSubimageSurface(gfxImageSurface* aParent,
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unsigned char* aData,
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const gfxIntSize& aSize);
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private:
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nsRefPtr<gfxImageSurface> mParent;
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};
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2007-03-22 10:30:00 -07:00
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#endif /* GFX_IMAGESURFACE_H */
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