| // Copyright 2020 Google LLC. |
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| #include "tools/fiddle/examples.h" |
| REG_FIDDLE(example3ps, 320, 256, false, 0) { |
| static SkMatrix setpsmatrix(float sx, float kx, float ky, float sy, float tx, float ty, int h) { |
| SkMatrix m; |
| |
| m.setAll(sx, -kx, -tx * sx - (ty - h) * kx, -ky, sy, (ty - h) * sy + tx * ky, 0, 0, 1); |
| return m; |
| } |
| |
| void draw(SkCanvas* canvas) { |
| canvas->save(); |
| canvas->scale(15, -15); |
| canvas->translate(0, -28); |
| SkPath path; |
| path.moveTo(2, 2); |
| path.lineTo(3, 3); |
| path.lineTo(3, 4); |
| path.lineTo(2, 4); |
| path.lineTo(1, 5); |
| path.close(); |
| SkPaint p; |
| p.setAntiAlias(true); |
| p.setStrokeWidth(0.1f); |
| |
| canvas->save(); |
| canvas->translate(0, 18); |
| p.setColor(SK_ColorGRAY); |
| canvas->drawPath(path, p); |
| canvas->restore(); |
| |
| p.setStyle(SkPaint::kStroke_Style); |
| canvas->save(); |
| canvas->translate(8, 19); |
| canvas->rotate(90); |
| p.setColor(SK_ColorRED); |
| canvas->drawPath(path, p); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(5, 23); |
| canvas->rotate(-90); |
| p.setColor(SK_ColorBLUE); |
| canvas->drawPath(path, p); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(14, 18); |
| canvas->scale(-1, 1); |
| p.setColor(0xFF007F00); |
| canvas->drawPath(path, p); |
| canvas->restore(); |
| canvas->restore(); |
| |
| canvas->scale(15, 15); |
| canvas->translate(0, 24); |
| |
| SkMatrix m; |
| unsigned char d[] = {0x00, 0x00, 0x00, 0x00, 0xff, 0xff}; |
| sk_sp<SkData> data = SkData::MakeWithoutCopy((unsigned char*)d, sizeof(d)); |
| SkImageInfo info = |
| SkImageInfo::Make(3, 2, SkColorType::kGray_8_SkColorType, kOpaque_SkAlphaType); |
| sk_sp<SkImage> image = SkImage::MakeRasterData(info, data, 3); |
| |
| canvas->save(); |
| m = setpsmatrix(1, 0, 0, 1, -1, -24, 2); |
| // m.setAll(1, 0, -1, 0, 1, -24, 0, 0, 1); |
| canvas->concat(m); |
| canvas->drawImage(image, 0, 0); |
| canvas->restore(); |
| |
| canvas->save(); |
| m = setpsmatrix(0, 1, 1, 0, -24, -5, 2); |
| // m.setAll(0, -1, 5, -1, 0, -22, 0, 0, 1); |
| canvas->concat(m); |
| canvas->drawImage(image, 0, 0); |
| canvas->restore(); |
| |
| canvas->save(); |
| m = setpsmatrix(0, 1, -1, 0, 27, -8, 2); |
| // m.setAll(0, -1, 8, 1, 0, -25, 0, 0, 1); |
| canvas->concat(m); |
| canvas->drawImage(image, 0, 0); |
| canvas->restore(); |
| |
| canvas->save(); |
| m = setpsmatrix(0, -1, -1, 0, -24, 13, 2); |
| // m.setAll(0, 1, 9, -1, 0, -22, 0, 0, 1); |
| canvas->concat(m); |
| canvas->drawImage(image, 0, 0); |
| canvas->restore(); |
| |
| canvas->save(); |
| m = setpsmatrix(-1, 0, 0, -1, 17, 26, 2); |
| // m.setAll(-1, 0, 15, 0, -1, -22, 0, 0, 1); |
| canvas->concat(m); |
| canvas->drawImage(image, 0, 0); |
| canvas->restore(); |
| |
| canvas->save(); |
| m = setpsmatrix(-1, 0, 0, 1, 21, -24, 2); |
| // m.setAll(-1, 0, 19, 0, 1, -24, 0, 0, 1); |
| canvas->concat(m); |
| canvas->drawImage(image, 0, 0); |
| canvas->restore(); |
| } |
| } // END FIDDLE |