| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkDrawProcs_DEFINED |
| #define SkDrawProcs_DEFINED |
| |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkScalar.h" |
| class SkMatrix; |
| |
| bool SkDrawTreatAAStrokeAsHairline(SkScalar strokeWidth, const SkMatrix&, |
| SkScalar* coverage); |
| |
| /** |
| * If the current paint is set to stroke and the stroke-width when applied to |
| * the matrix is <= 1.0, then this returns true, and sets coverage (simulating |
| * a stroke by drawing a hairline with partial coverage). If any of these |
| * conditions are false, then this returns false and coverage is ignored. |
| */ |
| inline bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix, |
| SkScalar* coverage) { |
| if (SkPaint::kStroke_Style != paint.getStyle()) { |
| return false; |
| } |
| |
| SkScalar strokeWidth = paint.getStrokeWidth(); |
| if (0 == strokeWidth) { |
| *coverage = SK_Scalar1; |
| return true; |
| } |
| |
| if (!paint.isAntiAlias()) { |
| return false; |
| } |
| |
| return SkDrawTreatAAStrokeAsHairline(strokeWidth, matrix, coverage); |
| } |
| |
| #endif |