37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
// Copyright 2020 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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REG_FIDDLE(blur_alpha_img, 256, 256, false, 0) {
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sk_sp<SkImage> foo() {
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int w = 240, h = 240;
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SkScalar scale = 10.0f;
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SkPath path;
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static const int8_t pts[] = {2, 2, 1, 3, 0, 3, 2, 1, 3, 1, 4, 0, 4, 1,
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5, 1, 4, 2, 4, 3, 2, 5, 2, 4, 3, 3, 2, 3};
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path.moveTo(2 * scale, 3 * scale);
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for (size_t i = 0; i < sizeof(pts) / sizeof(pts[0]); i += 2) {
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path.lineTo(pts[i] * scale, pts[i + 1] * scale);
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}
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path.close();
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SkMatrix matrix = SkMatrix::Scale(4 * scale, 4 * scale);
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SkPaint paint;
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paint.setPathEffect(SkPath2DPathEffect::Make(matrix, path));
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paint.setAntiAlias(true);
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SkRect bounds{-4 * scale, -4 * scale, (float)w, (float)h};
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SkBitmap bm;
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bm.allocPixels(SkImageInfo::MakeA8(w, h));
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SkCanvas c(bm);
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c.clear(0);
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c.drawRect(bounds, paint);
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return bm.asImage();
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}
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void draw(SkCanvas* canvas) {
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auto a8img = foo();
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SkPaint paint;
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paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 2.0f, 0));
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paint.setColor(0xFF008000);
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canvas->drawImage(a8img, 8, 8, SkSamplingOptions(), &paint);
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}
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} // END FIDDLE
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