Line data    Source code

       1             : /*
       2             :  * Copyright 2017 ARM Ltd.
       3             :  *
       4             :  * Use of this source code is governed by a BSD-style license that can be
       5             :  * found in the LICENSE file.
       6             :  */
       7             : 
       8             : #ifndef GrDistanceFieldGenFromVector_DEFINED
       9             : #define GrDistanceFieldGenFromVector_DEFINED
      10             : 
      11             : #include "SkPath.h"
      12             : 
      13             : class SkMatrix;
      14             : 
      15             : #ifndef SK_USE_LEGACY_DISTANCE_FIELDS
      16             :     #define SK_USE_LEGACY_DISTANCE_FIELDS
      17             : #endif
      18             : 
      19             : /** Given a vector path, generate the associated distance field.
      20             : 
      21             :  *  @param distanceField     The distance field to be generated. Should already be allocated
      22             :  *                           by the client with the padding defined in "SkDistanceFieldGen.h".
      23             :  *  @param path              The path we're using to generate the distance field.
      24             :  *  @param matrix            Transformation matrix for path.
      25             :  *  @param width             Width of the distance field.
      26             :  *  @param height            Height of the distance field.
      27             :  *  @param rowBytes          Size of each row in the distance field, in bytes.
      28             :  */
      29             : bool GrGenerateDistanceFieldFromPath(unsigned char* distanceField,
      30             :                                      const SkPath& path, const SkMatrix& viewMatrix,
      31             :                                      int width, int height, size_t rowBytes);
      32             : 
      33           0 : inline bool IsDistanceFieldSupportedFillType(SkPath::FillType fFillType)
      34             : {
      35           0 :         return (SkPath::kEvenOdd_FillType == fFillType ||
      36           0 :             SkPath::kInverseEvenOdd_FillType == fFillType);
      37             : }
      38             : 
      39             : #endif