gecko-dev/gfx/2d/SourceSurfaceCG.h

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3.2 KiB
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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;
// We hold a weak reference to these two objects.
// The cycle is broken by DrawTargetWillChange
DrawTargetCG *mDrawTarget;
CGContextRef mCg;
mutable CGImageRef mImage;
// mData can be owned by three different things:
// mImage, mCg or SourceSurfaceCGBitmapContext
void *mData;
int32_t mStride;
IntSize mSize;
};
}
}