sugoi@google.com | 5f74cf8 | 2012-12-17 21:16:45 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 | #include "SkStrokeRec.h" |
| 9 | #include "SkPaintDefaults.h" |
| 10 | |
| 11 | // must be < 0, since ==0 means hairline, and >0 means normal stroke |
| 12 | #define kStrokeRec_FillStyleWidth (-SK_Scalar1) |
| 13 | |
| 14 | SkStrokeRec::SkStrokeRec(InitStyle s) { |
| 15 | fWidth = (kFill_InitStyle == s) ? kStrokeRec_FillStyleWidth : 0; |
| 16 | fMiterLimit = SkPaintDefaults_MiterLimit; |
| 17 | fCap = SkPaint::kDefault_Cap; |
| 18 | fJoin = SkPaint::kDefault_Join; |
| 19 | fStrokeAndFill = false; |
| 20 | } |
| 21 | |
| 22 | SkStrokeRec::SkStrokeRec(const SkStrokeRec& src) { |
| 23 | memcpy(this, &src, sizeof(src)); |
| 24 | } |
| 25 | |
| 26 | SkStrokeRec::SkStrokeRec(const SkPaint& paint) { |
| 27 | switch (paint.getStyle()) { |
| 28 | case SkPaint::kFill_Style: |
| 29 | fWidth = kStrokeRec_FillStyleWidth; |
| 30 | fStrokeAndFill = false; |
| 31 | break; |
| 32 | case SkPaint::kStroke_Style: |
| 33 | fWidth = paint.getStrokeWidth(); |
| 34 | fStrokeAndFill = false; |
| 35 | break; |
| 36 | case SkPaint::kStrokeAndFill_Style: |
| 37 | if (0 == paint.getStrokeWidth()) { |
| 38 | // hairline+fill == fill |
| 39 | fWidth = kStrokeRec_FillStyleWidth; |
| 40 | fStrokeAndFill = false; |
| 41 | } else { |
| 42 | fWidth = paint.getStrokeWidth(); |
| 43 | fStrokeAndFill = true; |
| 44 | } |
| 45 | break; |
| 46 | default: |
mtklein@google.com | 330313a | 2013-08-22 15:37:26 +0000 | [diff] [blame] | 47 | SkDEBUGFAIL("unknown paint style"); |
sugoi@google.com | 5f74cf8 | 2012-12-17 21:16:45 +0000 | [diff] [blame] | 48 | // fall back on just fill |
| 49 | fWidth = kStrokeRec_FillStyleWidth; |
| 50 | fStrokeAndFill = false; |
| 51 | break; |
| 52 | } |
| 53 | |
| 54 | // copy these from the paint, regardless of our "style" |
| 55 | fMiterLimit = paint.getStrokeMiter(); |
| 56 | fCap = paint.getStrokeCap(); |
| 57 | fJoin = paint.getStrokeJoin(); |
| 58 | } |
| 59 | |
| 60 | SkStrokeRec::Style SkStrokeRec::getStyle() const { |
| 61 | if (fWidth < 0) { |
| 62 | return kFill_Style; |
| 63 | } else if (0 == fWidth) { |
| 64 | return kHairline_Style; |
| 65 | } else { |
| 66 | return fStrokeAndFill ? kStrokeAndFill_Style : kStroke_Style; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | void SkStrokeRec::setFillStyle() { |
| 71 | fWidth = kStrokeRec_FillStyleWidth; |
| 72 | fStrokeAndFill = false; |
| 73 | } |
| 74 | |
| 75 | void SkStrokeRec::setHairlineStyle() { |
| 76 | fWidth = 0; |
| 77 | fStrokeAndFill = false; |
| 78 | } |
| 79 | |
| 80 | void SkStrokeRec::setStrokeStyle(SkScalar width, bool strokeAndFill) { |
| 81 | if (strokeAndFill && (0 == width)) { |
| 82 | // hairline+fill == fill |
| 83 | this->setFillStyle(); |
| 84 | } else { |
| 85 | fWidth = width; |
| 86 | fStrokeAndFill = strokeAndFill; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | #include "SkStroke.h" |
| 91 | |
| 92 | bool SkStrokeRec::applyToPath(SkPath* dst, const SkPath& src) const { |
| 93 | if (fWidth <= 0) { // hairline or fill |
| 94 | return false; |
| 95 | } |
| 96 | |
| 97 | SkStroke stroker; |
| 98 | stroker.setCap(fCap); |
| 99 | stroker.setJoin(fJoin); |
| 100 | stroker.setMiterLimit(fMiterLimit); |
| 101 | stroker.setWidth(fWidth); |
| 102 | stroker.setDoFill(fStrokeAndFill); |
| 103 | stroker.strokePath(src, dst); |
| 104 | return true; |
| 105 | } |