gecko-dev/gfx/2d/SourceSurfaceCG.h
Jeff Muizelaar b17cef0f85 Bug 720482. Make CG snapshots work more like the other backends. r=joe,mattwoodrow,bas
This has big improvement in the performance of GetImageData() because
we make the snapshot lazily instead of using the vm_copy() method
of CGBitmapContextCreateImage()
2012-01-31 01:46:54 -05:00

143 lines
4.5 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* ***** 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 Mozilla Corporation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bas Schouten <bschouten@mozilla.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 ***** */
#pragma once
#include <ApplicationServices/ApplicationServices.h>
#include "2D.h"
namespace mozilla {
namespace gfx {
class DrawTargetCG;
class SourceSurfaceCG : public SourceSurface
{
public:
SourceSurfaceCG() {}
SourceSurfaceCG(CGImageRef aImage) : mImage(aImage) {}
~SourceSurfaceCG();
virtual SurfaceType GetType() const { return SURFACE_COREGRAPHICS_IMAGE; }
virtual IntSize GetSize() const;
virtual SurfaceFormat GetFormat() const;
virtual TemporaryRef<DataSourceSurface> GetDataSurface();
CGImageRef GetImage() { return mImage; }
bool InitFromData(unsigned char *aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat);
private:
CGImageRef mImage;
/* It might be better to just use the bitmap info from the CGImageRef to
* deduce the format to save space in SourceSurfaceCG,
* for now we just store it in mFormat */
SurfaceFormat mFormat;
};
class DataSourceSurfaceCG : public DataSourceSurface
{
public:
DataSourceSurfaceCG() {}
DataSourceSurfaceCG(CGImageRef aImage);
~DataSourceSurfaceCG();
virtual SurfaceType GetType() const { return SURFACE_DATA; }
virtual IntSize GetSize() const;
virtual SurfaceFormat GetFormat() const { return FORMAT_B8G8R8A8; }
CGImageRef GetImage() { return mImage; }
bool InitFromData(unsigned char *aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat);
virtual unsigned char *GetData();
virtual int32_t Stride() { return CGImageGetBytesPerRow(mImage); }
private:
CGContextRef mCg;
CGImageRef mImage;
//XXX: we don't need to store mData we can just get it from the CGContext
void *mData;
/* It might be better to just use the bitmap info from the CGImageRef to
* deduce the format to save space in SourceSurfaceCG,
* for now we just store it in mFormat */
};
class SourceSurfaceCGBitmapContext : public DataSourceSurface
{
public:
SourceSurfaceCGBitmapContext(DrawTargetCG *);
~SourceSurfaceCGBitmapContext();
virtual SurfaceType GetType() const { return SURFACE_COREGRAPHICS_CGCONTEXT; }
virtual IntSize GetSize() const;
virtual SurfaceFormat GetFormat() const { return FORMAT_B8G8R8A8; }
CGImageRef GetImage() { EnsureImage(); return mImage; }
virtual unsigned char *GetData() { return static_cast<unsigned char*>(mData); }
virtual int32_t Stride() { return mStride; }
private:
//XXX: do the other backends friend their DrawTarget?
friend class DrawTargetCG;
void DrawTargetWillChange();
void EnsureImage() const;
DrawTargetCG *mDrawTarget;
CGContextRef mCg;
mutable CGImageRef mImage;
void *mData;
int32_t mStride;
IntSize mSize;
};
}
}