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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/. */

 #ifndef mozilla_gfx_DrawTargetCG_h

 #define mozilla_gfx_DrawTargetCG_h

 #include <ApplicationServices/ApplicationServices.h>

 #include "2D.h"

 #include "Rect.h"

 #include "PathCG.h"

 #include "SourceSurfaceCG.h"

 #include "GLDefs.h"

 #include "Tools.h"

 namespace mozilla {

 namespace gfx {

 static inline CGAffineTransform

 GfxMatrixToCGAffineTransform(Matrix m)

 {

   CGAffineTransform t;

   t.a = m._11;

   t.b = m._12;

   t.c = m._21;

   t.d = m._22;

   t.tx = m._31;

   t.ty = m._32;

   return t;

 }

 static inline Rect

 CGRectToRect(CGRect rect)

 {

   return Rect(rect.origin.x,

               rect.origin.y,

               rect.size.width,

               rect.size.height);

 }

 static inline Point

 CGPointToPoint(CGPoint point)

 {

   return Point(point.x, point.y);

 }

 static inline void

 SetStrokeOptions(CGContextRef cg, const StrokeOptions &aStrokeOptions)

 {

   switch (aStrokeOptions.mLineCap)

   {

     case CapStyle::BUTT:

       CGContextSetLineCap(cg, kCGLineCapButt);

       break;

     case CapStyle::ROUND:

       CGContextSetLineCap(cg, kCGLineCapRound);

       break;

     case CapStyle::SQUARE:

       CGContextSetLineCap(cg, kCGLineCapSquare);

       break;

   }

   switch (aStrokeOptions.mLineJoin)

   {

     case JoinStyle::BEVEL:

       CGContextSetLineJoin(cg, kCGLineJoinBevel);

       break;

     case JoinStyle::ROUND:

       CGContextSetLineJoin(cg, kCGLineJoinRound);

       break;

     case JoinStyle::MITER:

     case JoinStyle::MITER_OR_BEVEL:

       CGContextSetLineJoin(cg, kCGLineJoinMiter);

       break;

   }

   CGContextSetLineWidth(cg, aStrokeOptions.mLineWidth);

   CGContextSetMiterLimit(cg, aStrokeOptions.mMiterLimit);

   // XXX: rename mDashLength to dashLength

   if (aStrokeOptions.mDashLength > 0) {

     // we use a regular array instead of a std::vector here because we don't want to leak the <vector> include

     CGFloat *dashes = new CGFloat[aStrokeOptions.mDashLength];

     for (size_t i=0; i<aStrokeOptions.mDashLength; i++) {

       dashes[i] = aStrokeOptions.mDashPattern[i];

     }

     CGContextSetLineDash(cg, aStrokeOptions.mDashOffset, dashes, aStrokeOptions.mDashLength);

     delete[] dashes;

   }

 }

 class DrawTargetCG : public DrawTarget

 {

 public:

   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DrawTargetCG)

   friend class BorrowedCGContext;

   DrawTargetCG();

   virtual ~DrawTargetCG();

   virtual BackendType GetType() const;

   virtual TemporaryRef<SourceSurface> Snapshot();

   virtual void DrawSurface(SourceSurface *aSurface,

                            const Rect &aDest,

                            const Rect &aSource,

                            const DrawSurfaceOptions &aSurfOptions = DrawSurfaceOptions(),

                            const DrawOptions &aOptions = DrawOptions());

   virtual void DrawFilter(FilterNode *aNode,

                           const Rect &aSourceRect,

                           const Point &aDestPoint,

                           const DrawOptions &aOptions = DrawOptions());

   virtual void MaskSurface(const Pattern &aSource,

                            SourceSurface *aMask,

                            Point aOffset,

                            const DrawOptions &aOptions = DrawOptions());

   virtual void FillRect(const Rect &aRect,

                         const Pattern &aPattern,

                         const DrawOptions &aOptions = DrawOptions());

   //XXX: why do we take a reference to SurfaceFormat?

   bool Init(BackendType aType, const IntSize &aSize, SurfaceFormat&);

   bool Init(BackendType aType, unsigned char* aData, const IntSize &aSize, int32_t aStride, SurfaceFormat aFormat);

   bool Init(CGContextRef cgContext, const IntSize &aSize);

   // Flush if using IOSurface context

   virtual void Flush();

   virtual void DrawSurfaceWithShadow(SourceSurface *, const Point &, const Color &, const Point &, Float, CompositionOp);

   virtual void ClearRect(const Rect &);

   virtual void CopySurface(SourceSurface *, const IntRect&, const IntPoint&);

   virtual void StrokeRect(const Rect &, const Pattern &, const StrokeOptions&, const DrawOptions&);

   virtual void StrokeLine(const Point &, const Point &, const Pattern &, const StrokeOptions &, const DrawOptions &);

   virtual void Stroke(const Path *, const Pattern &, const StrokeOptions &, const DrawOptions &);

   virtual void Fill(const Path *, const Pattern &, const DrawOptions &);

   virtual void FillGlyphs(ScaledFont *, const GlyphBuffer&, const Pattern &, const DrawOptions &, const GlyphRenderingOptions *);

   virtual void Mask(const Pattern &aSource,

                     const Pattern &aMask,

                     const DrawOptions &aOptions = DrawOptions());

   virtual void PushClip(const Path *);

   virtual void PushClipRect(const Rect &aRect);

   virtual void PopClip();

   virtual TemporaryRef<SourceSurface> CreateSourceSurfaceFromNativeSurface(const NativeSurface&) const { return nullptr;}

   virtual TemporaryRef<DrawTarget> CreateSimilarDrawTarget(const IntSize &, SurfaceFormat) const;

   virtual TemporaryRef<PathBuilder> CreatePathBuilder(FillRule) const;

   virtual TemporaryRef<GradientStops> CreateGradientStops(GradientStop *, uint32_t,

                                                           ExtendMode aExtendMode = ExtendMode::CLAMP) const;

   virtual TemporaryRef<FilterNode> CreateFilter(FilterType aType);

   virtual void *GetNativeSurface(NativeSurfaceType);

   virtual IntSize GetSize() { return mSize; }

   /* This is for creating good compatible surfaces */

   virtual TemporaryRef<SourceSurface> CreateSourceSurfaceFromData(unsigned char *aData,

                                                             const IntSize &aSize,

                                                             int32_t aStride,

                                                             SurfaceFormat aFormat) const;

   virtual TemporaryRef<SourceSurface> OptimizeSourceSurface(SourceSurface *aSurface) const;

   CGContextRef GetCGContext() {

       return mCg;

   }

 private:

   void MarkChanged();

   IntSize mSize;

   CGColorSpaceRef mColorSpace;

   CGContextRef mCg;

   /**

    * The image buffer, if the buffer is owned by this class.

    * If the DrawTarget was created for a pre-existing buffer or if the buffer's

    * lifetime is managed by CoreGraphics, mData will be null.

    * Data owned by DrawTargetCG will be deallocated in the destructor.

    */

   AlignedArray<uint8_t> mData;

   RefPtr<SourceSurfaceCGContext> mSnapshot;

 };

 }

 }

 #endif