Merge third_party/skia/include from https://chromium.googlesource.com/external/skia/include.git at cfb32ead7d0bd08495f48486156ee9bc98045e69

This commit was generated by merge_from_chromium.py.

Change-Id: I3caea84e92840296b200522d654caeaa725022a5

17 files changed, 336 insertions, 190 deletions

diff --git a/core/SkBBHFactory.h b/core/SkBBHFactory.h
index bd85d94..4c03844 100644
--- a/core/SkBBHFactory.h
+++ b/core/SkBBHFactory.h
@@ -13,7 +13,7 @@
 
 class SkBBoxHierarchy;
 
-class SkBBHFactory {
+class SK_API SkBBHFactory {
 public:
     /**
      *  Allocate a new SkBBoxHierarchy. Return NULL on failure.
@@ -22,7 +22,7 @@ public:
     virtual ~SkBBHFactory() {};
 };
 
-class SkQuadTreeFactory : public SkBBHFactory {
+class SK_API SkQuadTreeFactory : public SkBBHFactory {
 public:
     virtual SkBBoxHierarchy* operator()(int width, int height) const SK_OVERRIDE;
 private:
@@ -30,14 +30,14 @@ private:
 };
 
 
-class SkRTreeFactory : public SkBBHFactory {
+class SK_API SkRTreeFactory : public SkBBHFactory {
 public:
     virtual SkBBoxHierarchy* operator()(int width, int height) const SK_OVERRIDE;
 private:
     typedef SkBBHFactory INHERITED;
 };
 
-class SkTileGridFactory : public SkBBHFactory {
+class SK_API SkTileGridFactory : public SkBBHFactory {
 public:
     struct TileGridInfo {
         /** Tile placement interval */
diff --git a/core/SkCanvas.h b/core/SkCanvas.h
index 0a81969..91fb642 100644
--- a/core/SkCanvas.h
+++ b/core/SkCanvas.h
@@ -26,6 +26,13 @@
 //#define SK_SUPPORT_LEGACY_GETTOTALCLIP
 //#define SK_SUPPORT_LEGACY_GETTOPDEVICE
 
+//#define SK_SUPPORT_LEGACY_DRAWTEXT_VIRTUAL
+#ifdef SK_SUPPORT_LEGACY_DRAWTEXT_VIRTUAL
+    #define SK_LEGACY_DRAWTEXT_VIRTUAL  virtual
+#else
+    #define SK_LEGACY_DRAWTEXT_VIRTUAL
+#endif
+
 class SkBounder;
 class SkBaseDevice;
 class SkDraw;
@@ -868,7 +875,7 @@ public:
         @param y        The y-coordinate of the origin of the text being drawn
         @param paint    The paint used for the text (e.g. color, size, style)
     */
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
+    SK_LEGACY_DRAWTEXT_VIRTUAL void drawText(const void* text, size_t byteLength, SkScalar x,
                           SkScalar y, const SkPaint& paint);
 
     /** Draw the text, with each character/glyph origin specified by the pos[]
@@ -878,7 +885,7 @@ public:
         @param pos      Array of positions, used to position each character
         @param paint    The paint used for the text (e.g. color, size, style)
         */
-    virtual void drawPosText(const void* text, size_t byteLength,
+    SK_LEGACY_DRAWTEXT_VIRTUAL void drawPosText(const void* text, size_t byteLength,
                              const SkPoint pos[], const SkPaint& paint);
 
     /** Draw the text, with each character/glyph origin specified by the x
@@ -890,7 +897,7 @@ public:
         @param constY   The shared Y coordinate for all of the positions
         @param paint    The paint used for the text (e.g. color, size, style)
         */
-    virtual void drawPosTextH(const void* text, size_t byteLength,
+    SK_LEGACY_DRAWTEXT_VIRTUAL void drawPosTextH(const void* text, size_t byteLength,
                               const SkScalar xpos[], SkScalar constY,
                               const SkPaint& paint);
 
@@ -920,7 +927,7 @@ public:
                             mapped onto the path
         @param paint        The paint used for the text
         */
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
+    SK_LEGACY_DRAWTEXT_VIRTUAL void drawTextOnPath(const void* text, size_t byteLength,
                                 const SkPath& path, const SkMatrix* matrix,
                                 const SkPaint& paint);
 
@@ -1186,6 +1193,20 @@ protected:
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&);
 
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x,
+                            SkScalar y, const SkPaint& paint);
+    
+    virtual void onDrawPosText(const void* text, size_t byteLength,
+                               const SkPoint pos[], const SkPaint& paint);
+    
+    virtual void onDrawPosTextH(const void* text, size_t byteLength,
+                                const SkScalar xpos[], SkScalar constY,
+                                const SkPaint& paint);
+    
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength,
+                                  const SkPath& path, const SkMatrix* matrix,
+                                  const SkPaint& paint);
+
     enum ClipEdgeStyle {
         kHard_ClipEdgeStyle,
         kSoft_ClipEdgeStyle
diff --git a/core/SkColorShader.h b/core/SkColorShader.h
index 975156c..56e5add 100644
--- a/core/SkColorShader.h
+++ b/core/SkColorShader.h
@@ -30,16 +30,35 @@ public:
     */
     SkColorShader(SkColor c);
 
-    virtual ~SkColorShader();
-
-    virtual uint32_t getFlags() SK_OVERRIDE;
-    virtual uint8_t getSpan16Alpha() const SK_OVERRIDE;
     virtual bool isOpaque() const SK_OVERRIDE;
-    virtual bool setContext(const SkBitmap& device, const SkPaint& paint,
-                            const SkMatrix& matrix) SK_OVERRIDE;
-    virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE;
-    virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
-    virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE;
+
+    virtual SkShader::Context* createContext(const SkBitmap& device,
+                                             const SkPaint& paint,
+                                             const SkMatrix& matrix,
+                                             void* storage) const SK_OVERRIDE;
+
+    virtual size_t contextSize() const SK_OVERRIDE {
+        return sizeof(ColorShaderContext);
+    }
+
+    class ColorShaderContext : public SkShader::Context {
+    public:
+        ColorShaderContext(const SkColorShader& shader, const SkBitmap& device,
+                           const SkPaint& paint, const SkMatrix& matrix);
+
+        virtual uint32_t getFlags() const SK_OVERRIDE;
+        virtual uint8_t getSpan16Alpha() const SK_OVERRIDE;
+        virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE;
+        virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
+        virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE;
+
+    private:
+        SkPMColor   fPMColor;
+        uint32_t    fFlags;
+        uint16_t    fColor16;
+
+        typedef SkShader::Context INHERITED;
+    };
 
     // we return false for this, use asAGradient
     virtual BitmapType asABitmap(SkBitmap* outTexture,
@@ -56,11 +75,7 @@ protected:
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
 private:
-
     SkColor     fColor;         // ignored if fInheritColor is true
-    SkPMColor   fPMColor;       // cached after setContext()
-    uint32_t    fFlags;         // cached after setContext()
-    uint16_t    fColor16;       // cached after setContext()
     SkBool8     fInheritColor;
 
     typedef SkShader INHERITED;
diff --git a/core/SkComposeShader.h b/core/SkComposeShader.h
index b54e5ef..d42da0c 100644
--- a/core/SkComposeShader.h
+++ b/core/SkComposeShader.h
@@ -34,10 +34,38 @@ public:
     SkComposeShader(SkShader* sA, SkShader* sB, SkXfermode* mode = NULL);
     virtual ~SkComposeShader();
 
-    virtual bool setContext(const SkBitmap&, const SkPaint&,
-                            const SkMatrix&) SK_OVERRIDE;
-    virtual void endContext() SK_OVERRIDE;
-    virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
+    virtual bool validContext(const SkBitmap&, const SkPaint&,
+                              const SkMatrix&, SkMatrix* totalInverse = NULL) const SK_OVERRIDE;
+    virtual SkShader::Context* createContext(const SkBitmap&, const SkPaint&,
+                                             const SkMatrix&, void*) const SK_OVERRIDE;
+    virtual size_t contextSize() const SK_OVERRIDE;
+
+    class ComposeShaderContext : public SkShader::Context {
+    public:
+        // When this object gets destroyed, it will call contextA and contextB's destructor
+        // but it will NOT free the memory.
+        ComposeShaderContext(const SkComposeShader&, const SkBitmap&,
+                             const SkPaint&, const SkMatrix&,
+                             SkShader::Context* contextA, SkShader::Context* contextB);
+
+        SkShader::Context* getShaderContextA() const { return fShaderContextA; }
+        SkShader::Context* getShaderContextB() const { return fShaderContextB; }
+
+        virtual ~ComposeShaderContext();
+
+        virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
+
+    private:
+        SkShader::Context* fShaderContextA;
+        SkShader::Context* fShaderContextB;
+
+        typedef SkShader::Context INHERITED;
+    };
+
+#ifdef SK_DEBUG
+    SkShader* getShaderA() { return fShaderA; }
+    SkShader* getShaderB() { return fShaderB; }
+#endif
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeShader)
@@ -47,7 +75,6 @@ protected:
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
 private:
-
     SkShader*   fShaderA;
     SkShader*   fShaderB;
     SkXfermode* fMode;
diff --git a/core/SkEmptyShader.h b/core/SkEmptyShader.h
index d2ebb61..7494eff 100644
--- a/core/SkEmptyShader.h
+++ b/core/SkEmptyShader.h
@@ -15,20 +15,28 @@
 
 /**
  *  \class SkEmptyShader
- *  A Shader that always draws nothing. Its setContext always returns false,
- *  so it never expects that its shadeSpan() methods will get called.
+ *  A Shader that always draws nothing. Its createContext always returns NULL.
  */
 class SK_API SkEmptyShader : public SkShader {
 public:
     SkEmptyShader() {}
 
-    virtual uint32_t getFlags() SK_OVERRIDE;
-    virtual uint8_t getSpan16Alpha() const SK_OVERRIDE;
-    virtual bool setContext(const SkBitmap&, const SkPaint&,
-                            const SkMatrix&) SK_OVERRIDE;
-    virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE;
-    virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
-    virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE;
+    virtual size_t contextSize() const SK_OVERRIDE {
+        // Even though createContext returns NULL we have to return a value of at least
+        // sizeof(SkShader::Context) to satisfy SkSmallAllocator.
+        return sizeof(SkShader::Context);
+    }
+
+    virtual bool validContext(const SkBitmap&, const SkPaint&,
+                              const SkMatrix&, SkMatrix* totalInverse = NULL) const SK_OVERRIDE {
+        return false;
+    }
+
+    virtual SkShader::Context* createContext(const SkBitmap&, const SkPaint&,
+                                             const SkMatrix&, void*) const SK_OVERRIDE {
+        // validContext returns false.
+        return NULL;
+    }
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkEmptyShader)
diff --git a/core/SkPathEffect.h b/core/SkPathEffect.h
index 86ccf86..638287d 100644
--- a/core/SkPathEffect.h
+++ b/core/SkPathEffect.h
@@ -104,6 +104,33 @@ public:
                           const SkStrokeRec&, const SkMatrix&,
                           const SkRect* cullR) const;
 
+    /**
+     *  If the PathEffect can be represented as a dash pattern, asADash will return kDash_DashType
+     *  and None otherwise. If a non NULL info is passed in, the various DashInfo will be filled
+     *  in if the PathEffect can be a dash pattern. If passed in info has an fCount equal or
+     *  greater to that of the effect, it will memcpy the values of the dash intervals into the
+     *  info. Thus the general approach will be call asADash once with default info to get DashType
+     *  and fCount. If effect can be represented as a dash pattern, allocate space for the intervals
+     *  in info, then call asADash again with the same info and the intervals will get copied in.
+     */
+
+    enum DashType {
+        kNone_DashType, //!< ignores the info parameter
+        kDash_DashType, //!< fills in all of the info parameter
+    };
+
+    struct DashInfo {
+        DashInfo() : fIntervals(NULL), fCount(0), fPhase(0) {}
+
+        SkScalar*   fIntervals;         //!< Length of on/off intervals for dashed lines
+                                        //   Even values represent ons, and odds offs
+        int32_t     fCount;             //!< Number of intervals in the dash. Should be even number
+        SkScalar    fPhase;             //!< Offset into the dashed interval pattern
+                                        //   mod the sum of all intervals
+    };
+
+    virtual DashType asADash(DashInfo* info) const;
+
     SK_DEFINE_FLATTENABLE_TYPE(SkPathEffect)
 
 protected:
diff --git a/core/SkPicture.h b/core/SkPicture.h
index bf9ec4f..996d857 100644
--- a/core/SkPicture.h
+++ b/core/SkPicture.h
@@ -324,13 +324,14 @@ protected:
     // V22: SK_PICT_FACTORY_TAG's size is now the chunk size in bytes
     // V23: SkPaint::FilterLevel became a real enum
     // V24: SkTwoPointConicalGradient now has fFlipped flag for gradient flipping
+    // V25: SkDashPathEffect now only writes phase and interval array when flattening
 
     // Note: If the picture version needs to be increased then please follow the
     // steps to generate new SKPs in (only accessible to Googlers): http://goo.gl/qATVcw
 
     // Only SKPs within the min/current picture version range (inclusive) can be read.
     static const uint32_t MIN_PICTURE_VERSION = 19;
-    static const uint32_t CURRENT_PICTURE_VERSION = 24;
+    static const uint32_t CURRENT_PICTURE_VERSION = 25;
 
     mutable uint32_t      fUniqueID;
 
diff --git a/core/SkShader.h b/core/SkShader.h
index 6566e69..cc2cc75 100644
--- a/core/SkShader.h
+++ b/core/SkShader.h
@@ -38,7 +38,7 @@ public:
     virtual ~SkShader();
 
     /**
-     * Returns true if the local matrix is not an identity matrix.
+     *  Returns true if the local matrix is not an identity matrix.
      */
     bool hasLocalMatrix() const { return !fLocalMatrix.isIdentity(); }
 
@@ -96,7 +96,7 @@ public:
         */
         kIntrinsicly16_Flag = 0x04,
 
-        /** set (after setContext) if the spans only vary in X (const in Y).
+        /** set if the spans only vary in X (const in Y).
             e.g. an Nx1 bitmap that is being tiled in Y, or a linear-gradient
             that varies from left-to-right. This flag specifies this for
             shadeSpan().
@@ -112,84 +112,111 @@ public:
     };
 
     /**
-     *  Called sometimes before drawing with this shader. Return the type of
-     *  alpha your shader will return. The default implementation returns 0.
-     *  Your subclass should override if it can (even sometimes) report a
-     *  non-zero value, since that will enable various blitters to perform
-     *  faster.
-     */
-    virtual uint32_t getFlags() { return 0; }
-
-    /**
      *  Returns true if the shader is guaranteed to produce only opaque
      *  colors, subject to the SkPaint using the shader to apply an opaque
      *  alpha value. Subclasses should override this to allow some
-     *  optimizations.  isOpaque() can be called at any time, unlike getFlags,
-     *  which only works properly when the context is set.
+     *  optimizations.
      */
     virtual bool isOpaque() const { return false; }
 
-    /**
-     *  Return the alpha associated with the data returned by shadeSpan16(). If
-     *  kHasSpan16_Flag is not set, this value is meaningless.
-     */
-    virtual uint8_t getSpan16Alpha() const { return fPaintAlpha; }
+    class Context : public ::SkNoncopyable {
+    public:
+        Context(const SkShader& shader, const SkBitmap& device,
+                const SkPaint& paint, const SkMatrix& matrix);
 
-    /**
-     *  Called once before drawing, with the current paint and device matrix.
-     *  Return true if your shader supports these parameters, or false if not.
-     *  If false is returned, nothing will be drawn. If true is returned, then
-     *  a balancing call to endContext() will be made before the next call to
-     *  setContext.
-     *
-     *  Subclasses should be sure to call their INHERITED::setContext() if they
-     *  override this method.
-     */
-    virtual bool setContext(const SkBitmap& device, const SkPaint& paint,
-                            const SkMatrix& matrix);
+        virtual ~Context();
 
-    /**
-     *  Assuming setContext returned true, endContext() will be called when
-     *  the draw using the shader has completed. It is an error for setContext
-     *  to be called twice w/o an intervening call to endContext().
-     *
-     *  Subclasses should be sure to call their INHERITED::endContext() if they
-     *  override this method.
-     */
-    virtual void endContext();
+        /**
+         *  Called sometimes before drawing with this shader. Return the type of
+         *  alpha your shader will return. The default implementation returns 0.
+         *  Your subclass should override if it can (even sometimes) report a
+         *  non-zero value, since that will enable various blitters to perform
+         *  faster.
+         */
+        virtual uint32_t getFlags() const { return 0; }
 
-    SkDEBUGCODE(bool setContextHasBeenCalled() const { return SkToBool(fInSetContext); })
+        /**
+         *  Return the alpha associated with the data returned by shadeSpan16(). If
+         *  kHasSpan16_Flag is not set, this value is meaningless.
+         */
+        virtual uint8_t getSpan16Alpha() const { return fPaintAlpha; }
 
-    /**
-     *  Called for each span of the object being drawn. Your subclass should
-     *  set the appropriate colors (with premultiplied alpha) that correspond
-     *  to the specified device coordinates.
-     */
-    virtual void shadeSpan(int x, int y, SkPMColor[], int count) = 0;
+        /**
+         *  Called for each span of the object being drawn. Your subclass should
+         *  set the appropriate colors (with premultiplied alpha) that correspond
+         *  to the specified device coordinates.
+         */
+        virtual void shadeSpan(int x, int y, SkPMColor[], int count) = 0;
+
+        typedef void (*ShadeProc)(void* ctx, int x, int y, SkPMColor[], int count);
+        virtual ShadeProc asAShadeProc(void** ctx);
+
+        /**
+         *  Called only for 16bit devices when getFlags() returns
+         *  kOpaqueAlphaFlag | kHasSpan16_Flag
+         */
+        virtual void shadeSpan16(int x, int y, uint16_t[], int count);
+
+        /**
+         *  Similar to shadeSpan, but only returns the alpha-channel for a span.
+         *  The default implementation calls shadeSpan() and then extracts the alpha
+         *  values from the returned colors.
+         */
+        virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count);
 
-    typedef void (*ShadeProc)(void* ctx, int x, int y, SkPMColor[], int count);
-    virtual ShadeProc asAShadeProc(void** ctx);
+        /**
+         *  Helper function that returns true if this shader's shadeSpan16() method
+         *  can be called.
+         */
+        bool canCallShadeSpan16() {
+            return SkShader::CanCallShadeSpan16(this->getFlags());
+        }
+
+    protected:
+        // Reference to shader, so we don't have to dupe information.
+        const SkShader& fShader;
+
+        enum MatrixClass {
+            kLinear_MatrixClass,            // no perspective
+            kFixedStepInX_MatrixClass,      // fast perspective, need to call fixedStepInX() each
+                                            // scanline
+            kPerspective_MatrixClass        // slow perspective, need to mappoints each pixel
+        };
+        static MatrixClass ComputeMatrixClass(const SkMatrix&);
+
+        uint8_t             getPaintAlpha() const { return fPaintAlpha; }
+        const SkMatrix&     getTotalInverse() const { return fTotalInverse; }
+        MatrixClass         getInverseClass() const { return (MatrixClass)fTotalInverseClass; }
+
+    private:
+        SkMatrix            fTotalInverse;
+        uint8_t             fPaintAlpha;
+        uint8_t             fTotalInverseClass;
+
+        typedef SkNoncopyable INHERITED;
+    };
 
     /**
-     *  Called only for 16bit devices when getFlags() returns
-     *  kOpaqueAlphaFlag | kHasSpan16_Flag
+     *  Subclasses should be sure to call their INHERITED::validContext() if
+     *  they override this method.
      */
-    virtual void shadeSpan16(int x, int y, uint16_t[], int count);
+    virtual bool validContext(const SkBitmap& device, const SkPaint& paint,
+                              const SkMatrix& matrix, SkMatrix* totalInverse = NULL) const;
 
     /**
-     *  Similar to shadeSpan, but only returns the alpha-channel for a span.
-     *  The default implementation calls shadeSpan() and then extracts the alpha
-     *  values from the returned colors.
+     *  Create the actual object that does the shading.
+     *  Returns NULL if validContext() returns false.
+     *  Size of storage must be >= contextSize.
      */
-    virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count);
+    virtual Context* createContext(const SkBitmap& device,
+                                   const SkPaint& paint,
+                                   const SkMatrix& matrix,
+                                   void* storage) const = 0;
 
     /**
-     *  Helper function that returns true if this shader's shadeSpan16() method
-     *  can be called.
+     *  Return the size of a Context returned by createContext.
      */
-    bool canCallShadeSpan16() {
-        return SkShader::CanCallShadeSpan16(this->getFlags());
-    }
+    virtual size_t contextSize() const = 0;
 
     /**
      *  Helper to check the flags to know if it is legal to call shadeSpan16()
@@ -322,7 +349,7 @@ public:
      *  The incoming color to the effect has r=g=b=a all extracted from the SkPaint's alpha.
      *  The output color should be the computed SkShader premul color modulated by the incoming
      *  color. The GrContext may be used by the effect to create textures. The GPU device does not
-     *  call setContext. Instead we pass the SkPaint here in case the shader needs paint info.
+     *  call createContext. Instead we pass the SkPaint here in case the shader needs paint info.
      */
     virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint& paint) const;
 
@@ -362,26 +389,14 @@ public:
     SK_DEFINE_FLATTENABLE_TYPE(SkShader)
 
 protected:
-    enum MatrixClass {
-        kLinear_MatrixClass,            // no perspective
-        kFixedStepInX_MatrixClass,      // fast perspective, need to call fixedStepInX() each scanline
-        kPerspective_MatrixClass        // slow perspective, need to mappoints each pixel
-    };
-    static MatrixClass ComputeMatrixClass(const SkMatrix&);
-
-    // These can be called by your subclass after setContext() has been called
-    uint8_t             getPaintAlpha() const { return fPaintAlpha; }
-    const SkMatrix&     getTotalInverse() const { return fTotalInverse; }
-    MatrixClass         getInverseClass() const { return (MatrixClass)fTotalInverseClass; }
 
     SkShader(SkReadBuffer& );
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
+
 private:
     SkMatrix            fLocalMatrix;
-    SkMatrix            fTotalInverse;
-    uint8_t             fPaintAlpha;
-    uint8_t             fTotalInverseClass;
-    SkDEBUGCODE(SkBool8 fInSetContext;)
+
+    bool computeTotalInverse(const SkMatrix& matrix, SkMatrix* totalInverse) const;
 
     typedef SkFlattenable INHERITED;
 };
diff --git a/effects/SkDashPathEffect.h b/effects/SkDashPathEffect.h
index 41f8f5a..f69e905 100644
--- a/effects/SkDashPathEffect.h
+++ b/effects/SkDashPathEffect.h
@@ -49,6 +49,8 @@ public:
                           const SkStrokeRec&, const SkMatrix&,
                           const SkRect*) const SK_OVERRIDE;
 
+    virtual DashType asADash(DashInfo* info) const SK_OVERRIDE;
+
     virtual Factory getFactory() const SK_OVERRIDE;
 
     static SkFlattenable* CreateProc(SkReadBuffer&);
@@ -63,8 +65,11 @@ public:
     SkDashPathEffect(const SkScalar intervals[], int count, SkScalar phase);
 
 private:
+    void setInternalMembers(SkScalar phase);
+
     SkScalar*   fIntervals;
     int32_t     fCount;
+    SkScalar    fPhase;
     // computed from phase
     SkScalar    fInitialDashLength;
     int32_t     fInitialDashIndex;
diff --git a/effects/SkPerlinNoiseShader.h b/effects/SkPerlinNoiseShader.h
index dfd5a8c..5b27029 100644
--- a/effects/SkPerlinNoiseShader.h
+++ b/effects/SkPerlinNoiseShader.h
@@ -72,10 +72,32 @@ public:
     }
 
 
-    virtual bool setContext(const SkBitmap& device, const SkPaint& paint,
-                            const SkMatrix& matrix);
-    virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
-    virtual void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE;
+    virtual SkShader::Context* createContext(
+        const SkBitmap& device, const SkPaint& paint,
+        const SkMatrix& matrix, void* storage) const SK_OVERRIDE;
+    virtual size_t contextSize() const SK_OVERRIDE;
+
+    class PerlinNoiseShaderContext : public SkShader::Context {
+    public:
+        PerlinNoiseShaderContext(const SkPerlinNoiseShader& shader, const SkBitmap& device,
+                                 const SkPaint& paint, const SkMatrix& matrix);
+        virtual ~PerlinNoiseShaderContext() {}
+
+        virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
+        virtual void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE;
+
+    private:
+        SkPMColor shade(const SkPoint& point, StitchData& stitchData) const;
+        SkScalar calculateTurbulenceValueForPoint(
+            int channel, const PaintingData& paintingData,
+            StitchData& stitchData, const SkPoint& point) const;
+        SkScalar noise2D(int channel, const PaintingData& paintingData,
+                         const StitchData& stitchData, const SkPoint& noiseVector) const;
+
+        SkMatrix fMatrix;
+
+        typedef SkShader::Context INHERITED;
+    };
 
     virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&) const SK_OVERRIDE;
 
@@ -92,14 +114,6 @@ private:
                         const SkISize* tileSize);
     virtual ~SkPerlinNoiseShader();
 
-    SkScalar noise2D(int channel, const PaintingData& paintingData,
-                     const StitchData& stitchData, const SkPoint& noiseVector) const;
-
-    SkScalar calculateTurbulenceValueForPoint(int channel, const PaintingData& paintingData,
-                                              StitchData& stitchData, const SkPoint& point) const;
-
-    SkPMColor shade(const SkPoint& point, StitchData& stitchData) const;
-
     // TODO (scroggo): Once all SkShaders are created from a factory, and we have removed the
     // constructor that creates SkPerlinNoiseShader from an SkReadBuffer, several fields can
     // be made constant.
@@ -110,8 +124,6 @@ private:
     /*const*/ SkScalar                  fSeed;
     /*const*/ SkISize                   fTileSize;
     /*const*/ bool                      fStitchTiles;
-    // TODO (scroggo): Once setContext creates a new object, place this on that object.
-    SkMatrix fMatrix;
 
     PaintingData* fPaintingData;
 
diff --git a/effects/SkTransparentShader.h b/effects/SkTransparentShader.h
index 7428d44..790e5ae 100644
--- a/effects/SkTransparentShader.h
+++ b/effects/SkTransparentShader.h
@@ -14,21 +14,31 @@ class SK_API SkTransparentShader : public SkShader {
 public:
     SkTransparentShader() {}
 
-    virtual uint32_t getFlags() SK_OVERRIDE;
-    virtual bool    setContext(const SkBitmap& device,
-                               const SkPaint& paint,
-                               const SkMatrix& matrix) SK_OVERRIDE;
-    virtual void    shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
-    virtual void    shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
+    virtual SkShader::Context* createContext(const SkBitmap& device, const SkPaint& paint,
+                                             const SkMatrix& matrix, void* storage) const
+            SK_OVERRIDE;
+    virtual size_t contextSize() const SK_OVERRIDE;
+
+    class TransparentShaderContext : public SkShader::Context {
+    public:
+        TransparentShaderContext(const SkTransparentShader& shader, const SkBitmap& device,
+                                 const SkPaint& paint, const SkMatrix& matrix);
+        virtual ~TransparentShaderContext();
+
+        virtual uint32_t getFlags() const SK_OVERRIDE;
+        virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
+        virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
+
+    private:
+        const SkBitmap* fDevice;
+
+        typedef SkShader::Context INHERITED;
+    };
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTransparentShader)
 
 private:
-    // these are a cache from the call to setContext()
-    const SkBitmap* fDevice;
-    uint8_t         fAlpha;
-
     SkTransparentShader(SkReadBuffer& buffer) : INHERITED(buffer) {}
 
     typedef SkShader INHERITED;
diff --git a/utils/SkDeferredCanvas.h b/utils/SkDeferredCanvas.h
index e12cbf0..c4a41ca 100644
--- a/utils/SkDeferredCanvas.h
+++ b/utils/SkDeferredCanvas.h
@@ -162,17 +162,6 @@ public:
                                 SK_OVERRIDE;
     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
                             const SkPaint* paint) SK_OVERRIDE;
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
-                          SkScalar y, const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosText(const void* text, size_t byteLength,
-                             const SkPoint pos[], const SkPaint& paint)
-                             SK_OVERRIDE;
-    virtual void drawPosTextH(const void* text, size_t byteLength,
-                              const SkScalar xpos[], SkScalar constY,
-                              const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
-                                const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPicture(SkPicture& picture) SK_OVERRIDE;
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
@@ -190,8 +179,15 @@ protected:
     virtual void didConcat(const SkMatrix&) SK_OVERRIDE;
     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
 
-    virtual void onDrawDRRect(const SkRRect&, const SkRRect&,
-                              const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
+                               const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
+                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
+                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
diff --git a/utils/SkDumpCanvas.h b/utils/SkDumpCanvas.h
index b0b1847..6fc679b 100644
--- a/utils/SkDumpCanvas.h
+++ b/utils/SkDumpCanvas.h
@@ -90,16 +90,6 @@ public:
                                   const SkPaint* paint) SK_OVERRIDE;
     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
                             const SkPaint* paint) SK_OVERRIDE;
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
-                          SkScalar y, const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosText(const void* text, size_t byteLength,
-                             const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosTextH(const void* text, size_t byteLength,
-                              const SkScalar xpos[], SkScalar constY,
-                              const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
-                                const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
@@ -120,6 +110,14 @@ protected:
     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
+                               const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
+                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
+                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
     virtual void onPushCull(const SkRect& cullRect) SK_OVERRIDE;
     virtual void onPopCull() SK_OVERRIDE;
 
diff --git a/utils/SkLuaCanvas.h b/utils/SkLuaCanvas.h
index 38e089e..3efbdb9 100644
--- a/utils/SkLuaCanvas.h
+++ b/utils/SkLuaCanvas.h
@@ -36,16 +36,6 @@ public:
                                   const SkPaint* paint) SK_OVERRIDE;
     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
                             const SkPaint* paint) SK_OVERRIDE;
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
-                          SkScalar y, const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosText(const void* text, size_t byteLength,
-                             const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosTextH(const void* text, size_t byteLength,
-                              const SkScalar xpos[], SkScalar constY,
-                              const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
-                                const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
@@ -63,6 +53,14 @@ protected:
     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
+                               const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
+                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
+                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
diff --git a/utils/SkNWayCanvas.h b/utils/SkNWayCanvas.h
index 051674b..60d5151 100644
--- a/utils/SkNWayCanvas.h
+++ b/utils/SkNWayCanvas.h
@@ -43,16 +43,6 @@ public:
                                 const SkPaint* paint = NULL) SK_OVERRIDE;
     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
                             const SkPaint*) SK_OVERRIDE;
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
-                          SkScalar y, const SkPaint&) SK_OVERRIDE;
-    virtual void drawPosText(const void* text, size_t byteLength,
-                             const SkPoint pos[], const SkPaint&) SK_OVERRIDE;
-    virtual void drawPosTextH(const void* text, size_t byteLength,
-                              const SkScalar xpos[], SkScalar constY,
-                              const SkPaint&) SK_OVERRIDE;
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
-                                const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint&) SK_OVERRIDE;
     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
@@ -79,6 +69,14 @@ protected:
     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
+                               const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
+                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
+                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
diff --git a/utils/SkProxyCanvas.h b/utils/SkProxyCanvas.h
index 76426bd..8d8796c 100644
--- a/utils/SkProxyCanvas.h
+++ b/utils/SkProxyCanvas.h
@@ -42,16 +42,6 @@ public:
                                   const SkPaint* paint = NULL) SK_OVERRIDE;
     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
                             const SkPaint* paint = NULL) SK_OVERRIDE;
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
-                          SkScalar y, const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosText(const void* text, size_t byteLength,
-                             const SkPoint pos[], const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawPosTextH(const void* text, size_t byteLength,
-                              const SkScalar xpos[], SkScalar constY,
-                              const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
-                                const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
@@ -76,6 +66,14 @@ protected:
     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
+                               const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
+                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
+                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
diff --git a/utils/mac/SkCGUtils.h b/utils/mac/SkCGUtils.h
index 54c858c..a0fe666 100644
--- a/utils/mac/SkCGUtils.h
+++ b/utils/mac/SkCGUtils.h
@@ -8,7 +8,8 @@
 #ifndef SkCGUtils_DEFINED
 #define SkCGUtils_DEFINED
 
-#include "SkTypes.h"
+#include "SkSize.h"
+#include "SkImageInfo.h"
 
 #ifdef SK_BUILD_FOR_MAC
 #include <ApplicationServices/ApplicationServices.h>
@@ -23,6 +24,22 @@ class SkData;
 class SkStream;
 
 /**
+ *  Given a CGImage, allocate an SkBitmap and copy the image's pixels into it. If scaleToFit is not
+ *  null, use it to determine the size of the bitmap, and scale the image to fill the bitmap.
+ *  Otherwise use the image's width/height.
+ *
+ *  On failure, return false, and leave bitmap unchanged.
+ */
+SK_API bool SkCreateBitmapFromCGImage(SkBitmap* dst, CGImageRef src, SkISize* scaleToFit = NULL);
+
+/**
+ *  Copy the pixels from src into the memory specified by info/rowBytes/dstPixels. On failure,
+ *  return false (e.g. ImageInfo incompatible with src).
+ */
+SK_API bool SkCopyPixelsFromCGImage(const SkImageInfo& info, size_t rowBytes, void* dstPixels,
+                                    CGImageRef src);
+
+/**
  *  Create an imageref from the specified bitmap using the specified colorspace.
  *  If space is NULL, then CGColorSpaceCreateDeviceRGB() is used.
  */