Implement crop rect for lighting image filters.

include/effects/SkLightingImageFilter.h

 /*
  * Copyright 2012 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 SkLightingImageFilter_DEFINED
 #define SkLightingImageFilter_DEFINED
@@ skipping 33 matching lines @@
     }
     SkScalar fX, fY, fZ;
 };
 
 class SkLight;
 
 class SK_API SkLightingImageFilter : public SkImageFilter {
 public:
     static SkImageFilter* CreateDistantLitDiffuse(const SkPoint3& direction,
         SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
-        SkImageFilter* input = NULL);
+        SkImageFilter* input = NULL, const SkIRect* cropRect = NULL);
     static SkImageFilter* CreatePointLitDiffuse(const SkPoint3& location,
         SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
-        SkImageFilter* input = NULL);
+        SkImageFilter* input = NULL, const SkIRect* cropRect = NULL);
     static SkImageFilter* CreateSpotLitDiffuse(const SkPoint3& location,
         const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle,
         SkColor lightColor, SkScalar surfaceScale, SkScalar kd,
-        SkImageFilter* input = NULL);
+        SkImageFilter* input = NULL, const SkIRect* cropRect = NULL);
     static SkImageFilter* CreateDistantLitSpecular(const SkPoint3& direction,
         SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
-        SkScalar shininess, SkImageFilter* input = NULL);
+        SkScalar shininess, SkImageFilter* input = NULL, const SkIRect* cropRect = NULL);
     static SkImageFilter* CreatePointLitSpecular(const SkPoint3& location,
         SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
-        SkScalar shininess, SkImageFilter* input = NULL);
+        SkScalar shininess, SkImageFilter* input = NULL, const SkIRect* cropRect = NULL);
     static SkImageFilter* CreateSpotLitSpecular(const SkPoint3& location,
         const SkPoint3& target, SkScalar specularExponent, SkScalar cutoffAngle,
         SkColor lightColor, SkScalar surfaceScale, SkScalar ks,
-        SkScalar shininess, SkImageFilter* input = NULL);
+        SkScalar shininess, SkImageFilter* input = NULL, const SkIRect* cropRect = NULL);
     ~SkLightingImageFilter();
 
     SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
 
 protected:
-    SkLightingImageFilter(SkLight* light, SkScalar surfaceScale, SkImageFilter* input);
+    SkLightingImageFilter(SkLight* light,
+                          SkScalar surfaceScale,
+                          SkImageFilter* input,
+                          const SkIRect* cropRect = NULL);
     explicit SkLightingImageFilter(SkFlattenableReadBuffer& buffer);
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
     const SkLight* light() const { return fLight; }
     SkScalar surfaceScale() const { return fSurfaceScale; }
 
 private:
     typedef SkImageFilter INHERITED;
     SkLight* fLight;
     SkScalar fSurfaceScale;
 };
 
 #endif