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 "SkPath.h" 12 #include "SkPoint.h" 13 #include "SkPaint.h" 14 #include "SkStrokerPriv.h" 15 16 #ifdef SK_DEBUG 17 extern bool gDebugStrokerErrorSet; 18 extern SkScalar gDebugStrokerError; 19 extern int gMaxRecursion[]; 20 #endif 21 22 /** \class SkStroke 23 SkStroke is the utility class that constructs paths by stroking 24 geometries (lines, rects, ovals, roundrects, paths). This is 25 invoked when a geometry or text is drawn in a canvas with the 26 kStroke_Mask bit set in the paint. 27 */ 28 class SkStroke { 29 public: 30 SkStroke(); 31 SkStroke(const SkPaint&); 32 SkStroke(const SkPaint&, SkScalar width); // width overrides paint.getStrokeWidth() 33 34 SkPaint::Cap getCap() const { return (SkPaint::Cap)fCap; } 35 void setCap(SkPaint::Cap); 36 37 SkPaint::Join getJoin() const { return (SkPaint::Join)fJoin; } 38 void setJoin(SkPaint::Join); 39 40 void setMiterLimit(SkScalar); 41 void setWidth(SkScalar); 42 43 bool getDoFill() const { return SkToBool(fDoFill); } 44 void setDoFill(bool doFill) { fDoFill = SkToU8(doFill); } 45 46 /** 47 * ResScale is the "intended" resolution for the output. 48 * Default is 1.0. 49 * Larger values (res > 1) indicate that the result should be more precise, since it will 50 * be zoomed up, and small errors will be magnified. 51 * Smaller values (0 < res < 1) indicate that the result can be less precise, since it will 52 * be zoomed down, and small errors may be invisible. 53 */ 54 SkScalar getResScale() const { return fResScale; } 55 void setResScale(SkScalar rs) { 56 SkASSERT(rs > 0 && SkScalarIsFinite(rs)); 57 fResScale = rs; 58 } 59 60 /** 61 * Stroke the specified rect, winding it in the specified direction.. 62 */ 63 void strokeRect(const SkRect& rect, SkPath* result, 64 SkPath::Direction = SkPath::kCW_Direction) const; 65 void strokePath(const SkPath& path, SkPath*) const; 66 67 //////////////////////////////////////////////////////////////// 68 69 private: 70 SkScalar fWidth, fMiterLimit; 71 SkScalar fResScale; 72 uint8_t fCap, fJoin; 73 SkBool8 fDoFill; 74 75 friend class SkPaint; 76 }; 77 78 #endif 79
