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375c24772e
This patch converts sky.Paint to be a pure Dart object, which means we don't need to open a weak handle to sky.Paint. Avoiding the weak handle reduces the amount of weak handle callbacks we need to process at the end of GC and therefore reduces jank.
43 lines
1.5 KiB
Dart
43 lines
1.5 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:sky';
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void beginFrame(double timeStamp) {
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double size = 100.0;
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PictureRecorder recorder = new PictureRecorder();
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final double devicePixelRatio = view.devicePixelRatio;
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Canvas canvas = new Canvas(recorder, new Rect.fromLTWH(0.0, 0.0, view.width * devicePixelRatio, view.height * devicePixelRatio));
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canvas.scale(devicePixelRatio, devicePixelRatio);
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canvas.translate(size + 10.0, size + 10.0);
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Paint paint = new Paint();
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paint.color = const Color.fromARGB(255, 0, 255, 0);
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var builder = new LayerDrawLooperBuilder()
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// Shadow layer.
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..addLayerOnTop(
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new DrawLooperLayerInfo()
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..setPaintBits(PaintBits.all)
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..setOffset(const Offset(5.0, 5.0))
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..setColorMode(TransferMode.src),
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(Paint layerPaint) {
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layerPaint.color = const Color.fromARGB(128, 55, 55, 55);
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layerPaint.setMaskFilter(
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new MaskFilter.blur(BlurStyle.normal, 5.0, highQuality: true));
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})
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// Main layer.
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..addLayerOnTop(new DrawLooperLayerInfo(), new Paint());
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paint.setDrawLooper(builder.build());
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canvas.drawPaint(
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new Paint()..color = const Color.fromARGB(255, 255, 255, 255));
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canvas.drawRect(new Rect.fromLTRB(-size, -size, size, size), paint);
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view.picture = recorder.endRecording();
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}
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void main() {
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view.setFrameCallback(beginFrame);
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view.scheduleFrame();
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}
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