robertphillips | ffad53a | 2016-02-03 10:46:01 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 "gm.h" |
| 9 | |
| 10 | #include "SkAvoidXfermode.h" |
| 11 | |
| 12 | // This GM exercises how the avoid xfer mode interacts with partial coverage |
| 13 | class AvoidXfermode3GM : public skiagm::GM { |
| 14 | public: |
| 15 | AvoidXfermode3GM() { } |
| 16 | |
| 17 | protected: |
| 18 | SkString onShortName() override { |
| 19 | return SkString("avoidxfermode3"); |
| 20 | } |
| 21 | |
| 22 | SkISize onISize() override { return SkISize::Make(128, 128); } |
| 23 | |
| 24 | void onDraw(SkCanvas* canvas) override { |
| 25 | canvas->drawARGB(255, 0, 0, 0); |
| 26 | |
| 27 | SkRect r = SkRect::MakeXYWH(16.5f, 16.5f, 96.0f, 96.0f); |
| 28 | |
| 29 | SkPaint p0; |
| 30 | p0.setColor(SK_ColorWHITE); |
| 31 | p0.setAntiAlias(true); |
| 32 | |
| 33 | canvas->drawRect(r, p0); |
| 34 | |
| 35 | r = SkRect::MakeXYWH(3.5f, 3.5f, 59.0f, 59.0f); |
| 36 | |
| 37 | // UL corner: replace white with green with a tight tolerance |
| 38 | SkPaint p1; |
| 39 | p1.setColor(SK_ColorGREEN); |
| 40 | p1.setAntiAlias(true); |
| 41 | p1.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE, |
| 42 | 5, |
| 43 | SkAvoidXfermode::kTargetColor_Mode))->unref(); |
| 44 | |
| 45 | canvas->drawRect(r, p1); |
| 46 | |
| 47 | r.offsetTo(65.5f, 3.5f); |
| 48 | |
| 49 | // UR corner: draw red everywhere except white with a tight tolerance |
| 50 | SkPaint p2; |
| 51 | p2.setColor(SK_ColorRED); |
| 52 | p2.setAntiAlias(true); |
| 53 | p2.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE, |
| 54 | 250, |
| 55 | SkAvoidXfermode::kAvoidColor_Mode))->unref(); |
| 56 | |
| 57 | canvas->drawRect(r, p2); |
| 58 | |
| 59 | r.offsetTo(3.5f, 65.5f); |
| 60 | |
| 61 | // LL corner: replace white with blue with a loose tolerance |
| 62 | SkPaint p3; |
| 63 | p3.setColor(SK_ColorBLUE); |
| 64 | p3.setAntiAlias(true); |
| 65 | p3.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE, |
| 66 | 250, |
| 67 | SkAvoidXfermode::kTargetColor_Mode))->unref(); |
| 68 | |
| 69 | canvas->drawRect(r, p3); |
| 70 | |
| 71 | r.offsetTo(65.5f, 65.5f); |
| 72 | |
| 73 | // LR corner: draw yellow everywhere except white with a loose tolerance |
| 74 | SkPaint p4; |
| 75 | p4.setColor(SK_ColorYELLOW); |
| 76 | p4.setAntiAlias(true); |
| 77 | p4.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE, |
| 78 | 5, |
| 79 | SkAvoidXfermode::kAvoidColor_Mode))->unref(); |
| 80 | |
| 81 | canvas->drawRect(r, p4); |
| 82 | } |
| 83 | |
| 84 | private: |
| 85 | typedef GM INHERITED; |
| 86 | }; |
| 87 | |
| 88 | ////////////////////////////////////////////////////////////////////////////// |
| 89 | |
| 90 | DEF_GM(return new AvoidXfermode3GM;) |