1cb93a386Sopenharmony_ci// Copyright 2020 Google LLC.
2cb93a386Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3cb93a386Sopenharmony_ci#include "tools/fiddle/examples.h"
4cb93a386Sopenharmony_ciREG_FIDDLE(blur_alpha_img, 256, 256, false, 0) {
5cb93a386Sopenharmony_cisk_sp<SkImage> foo() {
6cb93a386Sopenharmony_ci    int w = 240, h = 240;
7cb93a386Sopenharmony_ci    SkScalar scale = 10.0f;
8cb93a386Sopenharmony_ci    SkPath path;
9cb93a386Sopenharmony_ci    static const int8_t pts[] = {2, 2, 1, 3, 0, 3, 2, 1, 3, 1, 4, 0, 4, 1,
10cb93a386Sopenharmony_ci                                 5, 1, 4, 2, 4, 3, 2, 5, 2, 4, 3, 3, 2, 3};
11cb93a386Sopenharmony_ci    path.moveTo(2 * scale, 3 * scale);
12cb93a386Sopenharmony_ci    for (size_t i = 0; i < sizeof(pts) / sizeof(pts[0]); i += 2) {
13cb93a386Sopenharmony_ci        path.lineTo(pts[i] * scale, pts[i + 1] * scale);
14cb93a386Sopenharmony_ci    }
15cb93a386Sopenharmony_ci    path.close();
16cb93a386Sopenharmony_ci    SkMatrix matrix = SkMatrix::Scale(4 * scale, 4 * scale);
17cb93a386Sopenharmony_ci    SkPaint paint;
18cb93a386Sopenharmony_ci    paint.setPathEffect(SkPath2DPathEffect::Make(matrix, path));
19cb93a386Sopenharmony_ci    paint.setAntiAlias(true);
20cb93a386Sopenharmony_ci    SkRect bounds{-4 * scale, -4 * scale, (float)w, (float)h};
21cb93a386Sopenharmony_ci    SkBitmap bm;
22cb93a386Sopenharmony_ci    bm.allocPixels(SkImageInfo::MakeA8(w, h));
23cb93a386Sopenharmony_ci    SkCanvas c(bm);
24cb93a386Sopenharmony_ci    c.clear(0);
25cb93a386Sopenharmony_ci    c.drawRect(bounds, paint);
26cb93a386Sopenharmony_ci    return bm.asImage();
27cb93a386Sopenharmony_ci}
28cb93a386Sopenharmony_ci
29cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
30cb93a386Sopenharmony_ci    auto a8img = foo();
31cb93a386Sopenharmony_ci    SkPaint paint;
32cb93a386Sopenharmony_ci    paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 2.0f, 0));
33cb93a386Sopenharmony_ci    paint.setColor(0xFF008000);
34cb93a386Sopenharmony_ci    canvas->drawImage(a8img, 8, 8, SkSamplingOptions(), &paint);
35cb93a386Sopenharmony_ci}
36cb93a386Sopenharmony_ci}  // END FIDDLE
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