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