Hal Canary | 6c8422c | 2020-01-10 15:22:09 -0500 | [diff] [blame] | 1 | // Copyright 2020 Google LLC. |
| 2 | // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| 3 | #include "tools/fiddle/examples.h" |
| 4 | REG_FIDDLE(example3ps, 320, 256, false, 0) { |
| 5 | static SkMatrix setpsmatrix(float sx, float kx, float ky, float sy, float tx, float ty, int h) { |
| 6 | SkMatrix m; |
| 7 | |
| 8 | m.setAll(sx, -kx, -tx * sx - (ty - h) * kx, -ky, sy, (ty - h) * sy + tx * ky, 0, 0, 1); |
| 9 | return m; |
| 10 | } |
| 11 | |
| 12 | void draw(SkCanvas* canvas) { |
| 13 | canvas->save(); |
| 14 | canvas->scale(15, -15); |
| 15 | canvas->translate(0, -28); |
| 16 | SkPath path; |
| 17 | path.moveTo(2, 2); |
| 18 | path.lineTo(3, 3); |
| 19 | path.lineTo(3, 4); |
| 20 | path.lineTo(2, 4); |
| 21 | path.lineTo(1, 5); |
| 22 | path.close(); |
| 23 | SkPaint p; |
| 24 | p.setAntiAlias(true); |
| 25 | p.setStrokeWidth(0.1f); |
| 26 | |
| 27 | canvas->save(); |
| 28 | canvas->translate(0, 18); |
| 29 | p.setColor(SK_ColorGRAY); |
| 30 | canvas->drawPath(path, p); |
| 31 | canvas->restore(); |
| 32 | |
| 33 | p.setStyle(SkPaint::kStroke_Style); |
| 34 | canvas->save(); |
| 35 | canvas->translate(8, 19); |
| 36 | canvas->rotate(90); |
| 37 | p.setColor(SK_ColorRED); |
| 38 | canvas->drawPath(path, p); |
| 39 | canvas->restore(); |
| 40 | |
| 41 | canvas->save(); |
| 42 | canvas->translate(5, 23); |
| 43 | canvas->rotate(-90); |
| 44 | p.setColor(SK_ColorBLUE); |
| 45 | canvas->drawPath(path, p); |
| 46 | canvas->restore(); |
| 47 | |
| 48 | canvas->save(); |
| 49 | canvas->translate(14, 18); |
| 50 | canvas->scale(-1, 1); |
| 51 | p.setColor(0xFF007F00); |
| 52 | canvas->drawPath(path, p); |
| 53 | canvas->restore(); |
| 54 | canvas->restore(); |
| 55 | |
| 56 | canvas->scale(15, 15); |
| 57 | canvas->translate(0, 24); |
| 58 | |
| 59 | SkMatrix m; |
| 60 | unsigned char d[] = {0x00, 0x00, 0x00, 0x00, 0xff, 0xff}; |
| 61 | sk_sp<SkData> data = SkData::MakeWithoutCopy((unsigned char*)d, sizeof(d)); |
| 62 | SkImageInfo info = |
| 63 | SkImageInfo::Make(3, 2, SkColorType::kGray_8_SkColorType, kOpaque_SkAlphaType); |
| 64 | sk_sp<SkImage> image = SkImage::MakeRasterData(info, data, 3); |
| 65 | |
| 66 | SkPaint bp; |
| 67 | canvas->save(); |
| 68 | m = setpsmatrix(1, 0, 0, 1, -1, -24, 2); |
| 69 | // m.setAll(1, 0, -1, 0, 1, -24, 0, 0, 1); |
| 70 | canvas->concat(m); |
| 71 | canvas->drawImage(image, 0, 0, &bp); |
| 72 | canvas->restore(); |
| 73 | |
| 74 | canvas->save(); |
| 75 | m = setpsmatrix(0, 1, 1, 0, -24, -5, 2); |
| 76 | // m.setAll(0, -1, 5, -1, 0, -22, 0, 0, 1); |
| 77 | canvas->concat(m); |
| 78 | canvas->drawImage(image, 0, 0, &bp); |
| 79 | canvas->restore(); |
| 80 | |
| 81 | canvas->save(); |
| 82 | m = setpsmatrix(0, 1, -1, 0, 27, -8, 2); |
| 83 | // m.setAll(0, -1, 8, 1, 0, -25, 0, 0, 1); |
| 84 | canvas->concat(m); |
| 85 | canvas->drawImage(image, 0, 0, &bp); |
| 86 | canvas->restore(); |
| 87 | |
| 88 | canvas->save(); |
| 89 | m = setpsmatrix(0, -1, -1, 0, -24, 13, 2); |
| 90 | // m.setAll(0, 1, 9, -1, 0, -22, 0, 0, 1); |
| 91 | canvas->concat(m); |
| 92 | canvas->drawImage(image, 0, 0, &bp); |
| 93 | canvas->restore(); |
| 94 | |
| 95 | canvas->save(); |
| 96 | m = setpsmatrix(-1, 0, 0, -1, 17, 26, 2); |
| 97 | // m.setAll(-1, 0, 15, 0, -1, -22, 0, 0, 1); |
| 98 | canvas->concat(m); |
| 99 | canvas->drawImage(image, 0, 0, &bp); |
| 100 | canvas->restore(); |
| 101 | |
| 102 | canvas->save(); |
| 103 | m = setpsmatrix(-1, 0, 0, 1, 21, -24, 2); |
| 104 | // m.setAll(-1, 0, 19, 0, 1, -24, 0, 0, 1); |
| 105 | canvas->concat(m); |
| 106 | canvas->drawImage(image, 0, 0, &bp); |
| 107 | canvas->restore(); |
| 108 | } |
| 109 | } // END FIDDLE |