1 /* 2 * Copyright 2016 Google Inc. 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 SkRRectsGaussianEdgeMaskFilter_DEFINED 9 #define SkRRectsGaussianEdgeMaskFilter_DEFINED 10 11 #include "SkMaskFilter.h" 12 13 class SkRRect; 14 15 class SK_API SkRRectsGaussianEdgeMaskFilter { 16 public: 17 /** Returns a mask filter that applies a Gaussian blur depending on distance to the edge 18 * of the intersection of two round rects. 19 * Currently this is only useable with round rects that have the same radii at 20 * all the corners and for which the x & y radii are equal. 21 * 22 * In order to minimize fill the coverage geometry that should be drawn should be no larger 23 * than the intersection of the bounding boxes of the two round rects. Ambitious users can 24 * omit the center area of the coverage geometry if it is known to be occluded. 25 */ 26 static sk_sp<SkMaskFilter> Make(const SkRRect& first, 27 const SkRRect& second, 28 SkScalar radius); 29 30 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() 31 32 private: 33 SkRRectsGaussianEdgeMaskFilter(); // can't be instantiated 34 }; 35 36 #endif 37
