1/* 2 * Copyright 2006 The Android Open Source Project 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 SkStroke_DEFINED 9#define SkStroke_DEFINED 10 11#include "include/core/SkPaint.h" 12#include "include/core/SkPath.h" 13#include "include/core/SkPoint.h" 14#include "include/private/SkTo.h" 15#include "src/core/SkStrokerPriv.h" 16 17#ifdef SK_DEBUG 18extern bool gDebugStrokerErrorSet; 19extern SkScalar gDebugStrokerError; 20extern int gMaxRecursion[]; 21#endif 22 23/** \class SkStroke 24 SkStroke is the utility class that constructs paths by stroking 25 geometries (lines, rects, ovals, roundrects, paths). This is 26 invoked when a geometry or text is drawn in a canvas with the 27 kStroke_Mask bit set in the paint. 28*/ 29class SK_API SkStroke { 30public: 31 SkStroke(); 32 SkStroke(const SkPaint&); 33 SkStroke(const SkPaint&, SkScalar width); // width overrides paint.getStrokeWidth() 34 35 SkPaint::Cap getCap() const { return (SkPaint::Cap)fCap; } 36 void setCap(SkPaint::Cap); 37 38 SkPaint::Join getJoin() const { return (SkPaint::Join)fJoin; } 39 void setJoin(SkPaint::Join); 40 41 void setMiterLimit(SkScalar); 42 void setWidth(SkScalar); 43 44 bool getDoFill() const { return SkToBool(fDoFill); } 45 void setDoFill(bool doFill) { fDoFill = SkToU8(doFill); } 46 47 /** 48 * ResScale is the "intended" resolution for the output. 49 * Default is 1.0. 50 * Larger values (res > 1) indicate that the result should be more precise, since it will 51 * be zoomed up, and small errors will be magnified. 52 * Smaller values (0 < res < 1) indicate that the result can be less precise, since it will 53 * be zoomed down, and small errors may be invisible. 54 */ 55 SkScalar getResScale() const { return fResScale; } 56 void setResScale(SkScalar rs) { 57 SkASSERT(rs > 0 && SkScalarIsFinite(rs)); 58 fResScale = rs; 59 } 60 61 /** 62 * Stroke the specified rect, winding it in the specified direction.. 63 */ 64 void strokeRect(const SkRect& rect, SkPath* result, 65 SkPathDirection = SkPathDirection::kCW) const; 66 void strokePath(const SkPath& path, SkPath*) const; 67 68 //////////////////////////////////////////////////////////////// 69 70private: 71 SkScalar fWidth, fMiterLimit; 72 SkScalar fResScale; 73 uint8_t fCap, fJoin; 74 bool fDoFill; 75 76 friend class SkPaint; 77}; 78 79#endif 80