Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 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 "SkSGMerge.h" |
| 9 | |
| 10 | #include "SkCanvas.h" |
| 11 | #include "SkPathOps.h" |
| 12 | |
| 13 | namespace sksg { |
| 14 | |
Florin Malita | 418e658 | 2018-07-09 16:20:47 -0400 | [diff] [blame] | 15 | Merge::Merge(std::vector<Rec>&& recs) |
| 16 | : fRecs(std::move(recs)) { |
| 17 | for (const auto& rec : fRecs) { |
| 18 | this->observeInval(rec.fGeo); |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 19 | } |
| 20 | } |
| 21 | |
| 22 | Merge::~Merge() { |
Florin Malita | 418e658 | 2018-07-09 16:20:47 -0400 | [diff] [blame] | 23 | for (const auto& rec : fRecs) { |
| 24 | this->unobserveInval(rec.fGeo); |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 25 | } |
| 26 | } |
| 27 | |
Florin Malita | 38ea40e | 2018-01-29 16:31:14 -0500 | [diff] [blame] | 28 | void Merge::onClip(SkCanvas* canvas, bool antiAlias) const { |
| 29 | canvas->clipPath(fMerged, SkClipOp::kIntersect, antiAlias); |
| 30 | } |
| 31 | |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 32 | void Merge::onDraw(SkCanvas* canvas, const SkPaint& paint) const { |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 33 | canvas->drawPath(fMerged, paint); |
| 34 | } |
| 35 | |
| 36 | SkPath Merge::onAsPath() const { |
| 37 | return fMerged; |
| 38 | } |
| 39 | |
| 40 | static SkPathOp mode_to_op(Merge::Mode mode) { |
| 41 | switch (mode) { |
| 42 | case Merge::Mode::kUnion: |
| 43 | return kUnion_SkPathOp; |
| 44 | case Merge::Mode::kIntersect: |
| 45 | return kIntersect_SkPathOp; |
| 46 | case Merge::Mode::kDifference: |
| 47 | return kDifference_SkPathOp; |
| 48 | case Merge::Mode::kReverseDifference: |
| 49 | return kReverseDifference_SkPathOp; |
| 50 | case Merge::Mode::kXOR: |
| 51 | return kXOR_SkPathOp; |
| 52 | default: |
| 53 | break; |
| 54 | } |
| 55 | |
| 56 | return kUnion_SkPathOp; |
| 57 | } |
| 58 | |
Florin Malita | c14f144 | 2018-01-05 11:32:31 -0500 | [diff] [blame] | 59 | SkRect Merge::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) { |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 60 | SkASSERT(this->hasInval()); |
| 61 | |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 62 | SkOpBuilder builder; |
| 63 | |
| 64 | fMerged.reset(); |
Florin Malita | 418e658 | 2018-07-09 16:20:47 -0400 | [diff] [blame] | 65 | bool in_builder = false; |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 66 | |
Florin Malita | 418e658 | 2018-07-09 16:20:47 -0400 | [diff] [blame] | 67 | for (const auto& rec : fRecs) { |
| 68 | rec.fGeo->revalidate(ic, ctm); |
| 69 | |
| 70 | // Merge is not currently supported by SkOpBuidler. |
| 71 | if (rec.fMode == Mode::kMerge) { |
| 72 | if (in_builder) { |
| 73 | builder.resolve(&fMerged); |
| 74 | in_builder = false; |
| 75 | } |
| 76 | |
| 77 | fMerged.addPath(rec.fGeo->asPath()); |
| 78 | continue; |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 79 | } |
Florin Malita | 418e658 | 2018-07-09 16:20:47 -0400 | [diff] [blame] | 80 | |
| 81 | if (!in_builder) { |
| 82 | builder.add(fMerged, kUnion_SkPathOp); |
| 83 | in_builder = true; |
| 84 | } |
| 85 | |
| 86 | builder.add(rec.fGeo->asPath(), mode_to_op(rec.fMode)); |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 87 | } |
| 88 | |
Florin Malita | 418e658 | 2018-07-09 16:20:47 -0400 | [diff] [blame] | 89 | if (in_builder) { |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 90 | builder.resolve(&fMerged); |
| 91 | } |
| 92 | |
Florin Malita | f2ade42 | 2018-09-11 16:38:39 -0400 | [diff] [blame^] | 93 | fMerged.shrinkToFit(); |
| 94 | |
Florin Malita | c14f144 | 2018-01-05 11:32:31 -0500 | [diff] [blame] | 95 | return fMerged.computeTightBounds(); |
Florin Malita | e6345d9 | 2018-01-03 23:37:54 -0500 | [diff] [blame] | 96 | } |
| 97 | |
Florin Malita | 54f65c4 | 2018-01-16 17:04:30 -0500 | [diff] [blame] | 98 | } // namespace sksg |