| // 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(blur_alpha_img, 256, 256, false, 0) { |
| sk_sp<SkImage> foo() { |
| int w = 240, h = 240; |
| SkScalar scale = 10.0f; |
| SkPath path; |
| static const int8_t pts[] = {2, 2, 1, 3, 0, 3, 2, 1, 3, 1, 4, 0, 4, 1, |
| 5, 1, 4, 2, 4, 3, 2, 5, 2, 4, 3, 3, 2, 3}; |
| path.moveTo(2 * scale, 3 * scale); |
| for (size_t i = 0; i < sizeof(pts) / sizeof(pts[0]); i += 2) { |
| path.lineTo(pts[i] * scale, pts[i + 1] * scale); |
| } |
| path.close(); |
| SkMatrix matrix = SkMatrix::Scale(4 * scale, 4 * scale); |
| SkPaint paint; |
| paint.setPathEffect(SkPath2DPathEffect::Make(matrix, path)); |
| paint.setAntiAlias(true); |
| SkRect bounds{-4 * scale, -4 * scale, (float)w, (float)h}; |
| SkBitmap bm; |
| bm.allocPixels(SkImageInfo::MakeA8(w, h)); |
| SkCanvas c(bm); |
| c.clear(0); |
| c.drawRect(bounds, paint); |
| return bm.asImage(); |
| } |
| |
| void draw(SkCanvas* canvas) { |
| auto a8img = foo(); |
| SkPaint paint; |
| paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 2.0f, 0)); |
| paint.setColor(0xFF008000); |
| canvas->drawImage(a8img, 8, 8, SkSamplingOptions(), &paint); |
| } |
| } // END FIDDLE |