Initial error handling code

include/core/SkShader.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkShader_DEFINED
 #define SkShader_DEFINED
@@ skipping 12 matching lines @@
  *
  *  Shaders specify the source color(s) for what is being drawn. If a paint
  *  has no shader, then the paint's color is used. If the paint has a
  *  shader, then the shader's color(s) are use instead, but they are
  *  modulated by the paint's alpha. This makes it easy to create a shader
  *  once (e.g. bitmap tiling or gradient) and then change its transparency
  *  w/o having to modify the original shader... only the paint's alpha needs
  *  to be modified.
  */
 class SK_API SkShader : public SkFlattenable {
+    typedef SkFlattenable INHERITED;
+
 public:
     SK_DECLARE_INST_COUNT(SkShader)
 
     SkShader();
     virtual ~SkShader();
 
     /**
      * Returns true if the local matrix is not an identity matrix.
      */
     bool hasLocalMatrix() const { return !fLocalMatrix.isIdentity(); }
@@ skipping 294 matching lines @@
      *  @param src  The bitmap to use inside the shader
      *  @param tmx  The tiling mode to use when sampling the bitmap in the x-direction.
      *  @param tmy  The tiling mode to use when sampling the bitmap in the y-direction.
      *  @return     Returns a new shader object. Note: this function never returns null.
     */
     static SkShader* CreateBitmapShader(const SkBitmap& src,
                                         TileMode tmx, TileMode tmy);
 
     SkDEVCODE(virtual void toString(SkString* str) const;)
 
+    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; }
     SkBitmap::Config    getDeviceConfig() const { return (SkBitmap::Config)fDeviceConfig; }
     const SkMatrix&     getTotalInverse() const { return fTotalInverse; }
     MatrixClass         getInverseClass() const { return (MatrixClass)fTotalInverseClass; }
 
     SkShader(SkFlattenableReadBuffer& );
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
 private:
     SkMatrix            fLocalMatrix;
     SkMatrix            fTotalInverse;
     uint8_t             fPaintAlpha;
     uint8_t             fDeviceConfig;
     uint8_t             fTotalInverseClass;
     SkDEBUGCODE(SkBool8 fInSetContext;)
 
     static SkShader* CreateBitmapShader(const SkBitmap& src,
                                         TileMode, TileMode,
                                         void* storage, size_t storageSize);
     friend class SkAutoBitmapShaderInstall;
-    typedef SkFlattenable INHERITED;
 };
 
 #endif