The Tor Browser / annotate

gfx/2d/DrawTargetCG.h@97036ab72558 (annotated)

gfx/2d/DrawTargetCG.h

Tue, 06 Jan 2015 21:39:09 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Tue, 06 Jan 2015 21:39:09 +0100
branch
TOR_BUG_9701
changeset 8
97036ab72558
permissions
-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0 2 * This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef mozilla_gfx_DrawTargetCG_h
michael@0 7 #define mozilla_gfx_DrawTargetCG_h
michael@0 8
michael@0 9 #include <ApplicationServices/ApplicationServices.h>
michael@0 10
michael@0 11 #include "2D.h"
michael@0 12 #include "Rect.h"
michael@0 13 #include "PathCG.h"
michael@0 14 #include "SourceSurfaceCG.h"
michael@0 15 #include "GLDefs.h"
michael@0 16 #include "Tools.h"
michael@0 17
michael@0 18 namespace mozilla {
michael@0 19 namespace gfx {
michael@0 20
michael@0 21 static inline CGAffineTransform
michael@0 22 GfxMatrixToCGAffineTransform(Matrix m)
michael@0 23 {
michael@0 24 CGAffineTransform t;
michael@0 25 t.a = m._11;
michael@0 26 t.b = m._12;
michael@0 27 t.c = m._21;
michael@0 28 t.d = m._22;
michael@0 29 t.tx = m._31;
michael@0 30 t.ty = m._32;
michael@0 31 return t;
michael@0 32 }
michael@0 33
michael@0 34 static inline Rect
michael@0 35 CGRectToRect(CGRect rect)
michael@0 36 {
michael@0 37 return Rect(rect.origin.x,
michael@0 38 rect.origin.y,
michael@0 39 rect.size.width,
michael@0 40 rect.size.height);
michael@0 41 }
michael@0 42
michael@0 43 static inline Point
michael@0 44 CGPointToPoint(CGPoint point)
michael@0 45 {
michael@0 46 return Point(point.x, point.y);
michael@0 47 }
michael@0 48
michael@0 49 static inline void
michael@0 50 SetStrokeOptions(CGContextRef cg, const StrokeOptions &aStrokeOptions)
michael@0 51 {
michael@0 52 switch (aStrokeOptions.mLineCap)
michael@0 53 {
michael@0 54 case CapStyle::BUTT:
michael@0 55 CGContextSetLineCap(cg, kCGLineCapButt);
michael@0 56 break;
michael@0 57 case CapStyle::ROUND:
michael@0 58 CGContextSetLineCap(cg, kCGLineCapRound);
michael@0 59 break;
michael@0 60 case CapStyle::SQUARE:
michael@0 61 CGContextSetLineCap(cg, kCGLineCapSquare);
michael@0 62 break;
michael@0 63 }
michael@0 64
michael@0 65 switch (aStrokeOptions.mLineJoin)
michael@0 66 {
michael@0 67 case JoinStyle::BEVEL:
michael@0 68 CGContextSetLineJoin(cg, kCGLineJoinBevel);
michael@0 69 break;
michael@0 70 case JoinStyle::ROUND:
michael@0 71 CGContextSetLineJoin(cg, kCGLineJoinRound);
michael@0 72 break;
michael@0 73 case JoinStyle::MITER:
michael@0 74 case JoinStyle::MITER_OR_BEVEL:
michael@0 75 CGContextSetLineJoin(cg, kCGLineJoinMiter);
michael@0 76 break;
michael@0 77 }
michael@0 78
michael@0 79 CGContextSetLineWidth(cg, aStrokeOptions.mLineWidth);
michael@0 80 CGContextSetMiterLimit(cg, aStrokeOptions.mMiterLimit);
michael@0 81
michael@0 82 // XXX: rename mDashLength to dashLength
michael@0 83 if (aStrokeOptions.mDashLength > 0) {
michael@0 84 // we use a regular array instead of a std::vector here because we don't want to leak the <vector> include
michael@0 85 CGFloat *dashes = new CGFloat[aStrokeOptions.mDashLength];
michael@0 86 for (size_t i=0; i<aStrokeOptions.mDashLength; i++) {
michael@0 87 dashes[i] = aStrokeOptions.mDashPattern[i];
michael@0 88 }
michael@0 89 CGContextSetLineDash(cg, aStrokeOptions.mDashOffset, dashes, aStrokeOptions.mDashLength);
michael@0 90 delete[] dashes;
michael@0 91 }
michael@0 92 }
michael@0 93
michael@0 94
michael@0 95 class DrawTargetCG : public DrawTarget
michael@0 96 {
michael@0 97 public:
michael@0 98 MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DrawTargetCG)
michael@0 99 friend class BorrowedCGContext;
michael@0 100 DrawTargetCG();
michael@0 101 virtual ~DrawTargetCG();
michael@0 102
michael@0 103 virtual BackendType GetType() const;
michael@0 104 virtual TemporaryRef<SourceSurface> Snapshot();
michael@0 105
michael@0 106 virtual void DrawSurface(SourceSurface *aSurface,
michael@0 107 const Rect &aDest,
michael@0 108 const Rect &aSource,
michael@0 109 const DrawSurfaceOptions &aSurfOptions = DrawSurfaceOptions(),
michael@0 110 const DrawOptions &aOptions = DrawOptions());
michael@0 111 virtual void DrawFilter(FilterNode *aNode,
michael@0 112 const Rect &aSourceRect,
michael@0 113 const Point &aDestPoint,
michael@0 114 const DrawOptions &aOptions = DrawOptions());
michael@0 115 virtual void MaskSurface(const Pattern &aSource,
michael@0 116 SourceSurface *aMask,
michael@0 117 Point aOffset,
michael@0 118 const DrawOptions &aOptions = DrawOptions());
michael@0 119
michael@0 120 virtual void FillRect(const Rect &aRect,
michael@0 121 const Pattern &aPattern,
michael@0 122 const DrawOptions &aOptions = DrawOptions());
michael@0 123
michael@0 124
michael@0 125 //XXX: why do we take a reference to SurfaceFormat?
michael@0 126 bool Init(BackendType aType, const IntSize &aSize, SurfaceFormat&);
michael@0 127 bool Init(BackendType aType, unsigned char* aData, const IntSize &aSize, int32_t aStride, SurfaceFormat aFormat);
michael@0 128 bool Init(CGContextRef cgContext, const IntSize &aSize);
michael@0 129
michael@0 130 // Flush if using IOSurface context
michael@0 131 virtual void Flush();
michael@0 132
michael@0 133 virtual void DrawSurfaceWithShadow(SourceSurface *, const Point &, const Color &, const Point &, Float, CompositionOp);
michael@0 134 virtual void ClearRect(const Rect &);
michael@0 135 virtual void CopySurface(SourceSurface *, const IntRect&, const IntPoint&);
michael@0 136 virtual void StrokeRect(const Rect &, const Pattern &, const StrokeOptions&, const DrawOptions&);
michael@0 137 virtual void StrokeLine(const Point &, const Point &, const Pattern &, const StrokeOptions &, const DrawOptions &);
michael@0 138 virtual void Stroke(const Path *, const Pattern &, const StrokeOptions &, const DrawOptions &);
michael@0 139 virtual void Fill(const Path *, const Pattern &, const DrawOptions &);
michael@0 140 virtual void FillGlyphs(ScaledFont *, const GlyphBuffer&, const Pattern &, const DrawOptions &, const GlyphRenderingOptions *);
michael@0 141 virtual void Mask(const Pattern &aSource,
michael@0 142 const Pattern &aMask,
michael@0 143 const DrawOptions &aOptions = DrawOptions());
michael@0 144 virtual void PushClip(const Path *);
michael@0 145 virtual void PushClipRect(const Rect &aRect);
michael@0 146 virtual void PopClip();
michael@0 147 virtual TemporaryRef<SourceSurface> CreateSourceSurfaceFromNativeSurface(const NativeSurface&) const { return nullptr;}
michael@0 148 virtual TemporaryRef<DrawTarget> CreateSimilarDrawTarget(const IntSize &, SurfaceFormat) const;
michael@0 149 virtual TemporaryRef<PathBuilder> CreatePathBuilder(FillRule) const;
michael@0 150 virtual TemporaryRef<GradientStops> CreateGradientStops(GradientStop *, uint32_t,
michael@0 151 ExtendMode aExtendMode = ExtendMode::CLAMP) const;
michael@0 152 virtual TemporaryRef<FilterNode> CreateFilter(FilterType aType);
michael@0 153
michael@0 154 virtual void *GetNativeSurface(NativeSurfaceType);
michael@0 155
michael@0 156 virtual IntSize GetSize() { return mSize; }
michael@0 157
michael@0 158
michael@0 159 /* This is for creating good compatible surfaces */
michael@0 160 virtual TemporaryRef<SourceSurface> CreateSourceSurfaceFromData(unsigned char *aData,
michael@0 161 const IntSize &aSize,
michael@0 162 int32_t aStride,
michael@0 163 SurfaceFormat aFormat) const;
michael@0 164 virtual TemporaryRef<SourceSurface> OptimizeSourceSurface(SourceSurface *aSurface) const;
michael@0 165 CGContextRef GetCGContext() {
michael@0 166 return mCg;
michael@0 167 }
michael@0 168 private:
michael@0 169 void MarkChanged();
michael@0 170
michael@0 171 IntSize mSize;
michael@0 172 CGColorSpaceRef mColorSpace;
michael@0 173 CGContextRef mCg;
michael@0 174
michael@0 175 /**
michael@0 176 * The image buffer, if the buffer is owned by this class.
michael@0 177 * If the DrawTarget was created for a pre-existing buffer or if the buffer's
michael@0 178 * lifetime is managed by CoreGraphics, mData will be null.
michael@0 179 * Data owned by DrawTargetCG will be deallocated in the destructor.
michael@0 180 */
michael@0 181 AlignedArray<uint8_t> mData;
michael@0 182
michael@0 183 RefPtr<SourceSurfaceCGContext> mSnapshot;
michael@0 184 };
michael@0 185
michael@0 186 }
michael@0 187 }
michael@0 188
michael@0 189 #endif
michael@0 190

Mercurial Repository: The Tor Browser

Europalab SCM Repository Server

mercurial