1 /* 2 * Copyright 2011 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 SkDrawProcs_DEFINED 9 #define SkDrawProcs_DEFINED 10 11 #include "SkDraw.h" 12 #include "SkGlyph.h" 13 14 bool SkDrawTreatAAStrokeAsHairline(SkScalar strokeWidth, const SkMatrix&, 15 SkScalar* coverage); 16 17 /** 18 * If the current paint is set to stroke and the stroke-width when applied to 19 * the matrix is <= 1.0, then this returns true, and sets coverage (simulating 20 * a stroke by drawing a hairline with partial coverage). If any of these 21 * conditions are false, then this returns false and coverage is ignored. 22 */ 23 inline bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix, 24 SkScalar* coverage) { 25 if (SkPaint::kStroke_Style != paint.getStyle()) { 26 return false; 27 } 28 29 SkScalar strokeWidth = paint.getStrokeWidth(); 30 if (0 == strokeWidth) { 31 *coverage = SK_Scalar1; 32 return true; 33 } 34 35 if (!paint.isAntiAlias()) { 36 return false; 37 } 38 39 return SkDrawTreatAAStrokeAsHairline(strokeWidth, matrix, coverage); 40 } 41 42 #endif 43
