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
13class 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 */
29bool GrGenerateDistanceFieldFromPath(unsigned char* distanceField,
30                                     const SkPath& path, const SkMatrix& viewMatrix,
31                                     int width, int height, size_t rowBytes);
32
33inline bool IsDistanceFieldSupportedFillType(SkPath::FillType fFillType)
34{
35	return (SkPath::kEvenOdd_FillType == fFillType ||
36            SkPath::kInverseEvenOdd_FillType == fFillType);
37}
38
39#endif
40