1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/2d/SourceSurfaceCG.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,192 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef _MOZILLA_GFX_SOURCESURFACECG_H
1.10 +#define _MOZILLA_GFX_SOURCESURFACECG_H
1.11 +
1.12 +#include <ApplicationServices/ApplicationServices.h>
1.13 +
1.14 +#include "2D.h"
1.15 +
1.16 +class MacIOSurface;
1.17 +
1.18 +namespace mozilla {
1.19 +namespace gfx {
1.20 +
1.21 +CGImageRef
1.22 +CreateCGImage(void *aInfo,
1.23 + const void *aData,
1.24 + const IntSize &aSize,
1.25 + int32_t aStride,
1.26 + SurfaceFormat aFormat);
1.27 +
1.28 +class DrawTargetCG;
1.29 +
1.30 +class SourceSurfaceCG : public SourceSurface
1.31 +{
1.32 +public:
1.33 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceCG)
1.34 + SourceSurfaceCG() {}
1.35 + SourceSurfaceCG(CGImageRef aImage) : mImage(aImage) {}
1.36 + ~SourceSurfaceCG();
1.37 +
1.38 + virtual SurfaceType GetType() const { return SurfaceType::COREGRAPHICS_IMAGE; }
1.39 + virtual IntSize GetSize() const;
1.40 + virtual SurfaceFormat GetFormat() const;
1.41 + virtual TemporaryRef<DataSourceSurface> GetDataSurface();
1.42 +
1.43 + CGImageRef GetImage() { return mImage; }
1.44 +
1.45 + bool InitFromData(unsigned char *aData,
1.46 + const IntSize &aSize,
1.47 + int32_t aStride,
1.48 + SurfaceFormat aFormat);
1.49 +
1.50 +private:
1.51 + CGImageRef mImage;
1.52 +
1.53 + /* It might be better to just use the bitmap info from the CGImageRef to
1.54 + * deduce the format to save space in SourceSurfaceCG,
1.55 + * for now we just store it in mFormat */
1.56 + SurfaceFormat mFormat;
1.57 +};
1.58 +
1.59 +class DataSourceSurfaceCG : public DataSourceSurface
1.60 +{
1.61 +public:
1.62 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceCG)
1.63 + DataSourceSurfaceCG() {}
1.64 + DataSourceSurfaceCG(CGImageRef aImage);
1.65 + ~DataSourceSurfaceCG();
1.66 +
1.67 + virtual SurfaceType GetType() const { return SurfaceType::DATA; }
1.68 + virtual IntSize GetSize() const;
1.69 + virtual SurfaceFormat GetFormat() const { return mFormat; }
1.70 +
1.71 + CGImageRef GetImage() { return mImage; }
1.72 +
1.73 + bool InitFromData(unsigned char *aData,
1.74 + const IntSize &aSize,
1.75 + int32_t aStride,
1.76 + SurfaceFormat aFormat);
1.77 +
1.78 + virtual unsigned char *GetData();
1.79 +
1.80 + virtual int32_t Stride() { return CGImageGetBytesPerRow(mImage); }
1.81 +
1.82 +
1.83 +private:
1.84 + CGContextRef mCg;
1.85 + CGImageRef mImage;
1.86 + SurfaceFormat mFormat;
1.87 + //XXX: we don't need to store mData we can just get it from the CGContext
1.88 + void *mData;
1.89 + /* It might be better to just use the bitmap info from the CGImageRef to
1.90 + * deduce the format to save space in SourceSurfaceCG,
1.91 + * for now we just store it in mFormat */
1.92 +};
1.93 +
1.94 +class SourceSurfaceCGContext : public DataSourceSurface
1.95 +{
1.96 +public:
1.97 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceCGContext)
1.98 + virtual void DrawTargetWillChange() = 0;
1.99 + virtual CGImageRef GetImage() = 0;
1.100 +};
1.101 +
1.102 +class SourceSurfaceCGBitmapContext : public SourceSurfaceCGContext
1.103 +{
1.104 +public:
1.105 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceCGBitmapContext)
1.106 + SourceSurfaceCGBitmapContext(DrawTargetCG *);
1.107 + ~SourceSurfaceCGBitmapContext();
1.108 +
1.109 + virtual SurfaceType GetType() const { return SurfaceType::COREGRAPHICS_CGCONTEXT; }
1.110 + virtual IntSize GetSize() const;
1.111 + virtual SurfaceFormat GetFormat() const { return mFormat; }
1.112 + virtual TemporaryRef<DataSourceSurface> GetDataSurface()
1.113 + {
1.114 + // This call to DrawTargetWillChange() is needed to make a local copy of
1.115 + // the data from mDrawTarget. If we don't do that, the data can end up
1.116 + // getting deleted before the CGImageRef it belongs to.
1.117 + //
1.118 + // Another reason we need a local copy of the data is that the data in
1.119 + // mDrawTarget could change when someone touches the original DrawTargetCG
1.120 + // object. But a SourceSurface object should be immutable.
1.121 + //
1.122 + // For more information see bug 925448.
1.123 + DrawTargetWillChange();
1.124 + return this;
1.125 + }
1.126 +
1.127 + CGImageRef GetImage() { EnsureImage(); return mImage; }
1.128 +
1.129 + virtual unsigned char *GetData() { return static_cast<unsigned char*>(mData); }
1.130 +
1.131 + virtual int32_t Stride() { return mStride; }
1.132 +
1.133 +private:
1.134 + //XXX: do the other backends friend their DrawTarget?
1.135 + friend class DrawTargetCG;
1.136 + virtual void DrawTargetWillChange();
1.137 + void EnsureImage() const;
1.138 +
1.139 + // We hold a weak reference to these two objects.
1.140 + // The cycle is broken by DrawTargetWillChange
1.141 + DrawTargetCG *mDrawTarget;
1.142 + CGContextRef mCg;
1.143 + SurfaceFormat mFormat;
1.144 +
1.145 + mutable CGImageRef mImage;
1.146 +
1.147 + // mData can be owned by three different things:
1.148 + // mImage, mCg or SourceSurfaceCGBitmapContext
1.149 + void *mData;
1.150 +
1.151 + // The image buffer, if the buffer is owned by this class.
1.152 + AlignedArray<uint8_t> mDataHolder;
1.153 +
1.154 + int32_t mStride;
1.155 + IntSize mSize;
1.156 +};
1.157 +
1.158 +class SourceSurfaceCGIOSurfaceContext : public SourceSurfaceCGContext
1.159 +{
1.160 +public:
1.161 + MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceCGIOSurfaceContext)
1.162 + SourceSurfaceCGIOSurfaceContext(DrawTargetCG *);
1.163 + ~SourceSurfaceCGIOSurfaceContext();
1.164 +
1.165 + virtual SurfaceType GetType() const { return SurfaceType::COREGRAPHICS_CGCONTEXT; }
1.166 + virtual IntSize GetSize() const;
1.167 + virtual SurfaceFormat GetFormat() const { return mFormat; }
1.168 +
1.169 + CGImageRef GetImage() { EnsureImage(); return mImage; }
1.170 +
1.171 + virtual unsigned char *GetData();
1.172 +
1.173 + virtual int32_t Stride() { return mStride; }
1.174 +
1.175 +private:
1.176 + //XXX: do the other backends friend their DrawTarget?
1.177 + friend class DrawTargetCG;
1.178 + virtual void DrawTargetWillChange();
1.179 + void EnsureImage() const;
1.180 +
1.181 + SurfaceFormat mFormat;
1.182 + mutable CGImageRef mImage;
1.183 + MacIOSurface* mIOSurface;
1.184 +
1.185 + void *mData;
1.186 + int32_t mStride;
1.187 +
1.188 + IntSize mSize;
1.189 +};
1.190 +
1.191 +
1.192 +}
1.193 +}
1.194 +
1.195 +#endif // _MOZILLA_GFX_SOURCESURFACECG_H
