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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:math' as math;
import 'dart:typed_data';
import 'package:flutter/widgets.dart';
import 'recorder.dart';
const List<int> kTransparentImage = <int>[
0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49,
0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x06,
0x00, 0x00, 0x00, 0x1F, 0x15, 0xC4, 0x89, 0x00, 0x00, 0x00, 0x06, 0x62, 0x4B,
0x47, 0x44, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0xA0, 0xBD, 0xA7, 0x93, 0x00,
0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0B, 0x13, 0x00, 0x00,
0x0B, 0x13, 0x01, 0x00, 0x9A, 0x9C, 0x18, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49,
0x4D, 0x45, 0x07, 0xE6, 0x03, 0x10, 0x17, 0x07, 0x1D, 0x2E, 0x5E, 0x30, 0x9B,
0x00, 0x00, 0x00, 0x0B, 0x49, 0x44, 0x41, 0x54, 0x08, 0xD7, 0x63, 0x60, 0x00,
0x02, 0x00, 0x00, 0x05, 0x00, 0x01, 0xE2, 0x26, 0x05, 0x9B, 0x00, 0x00, 0x00,
0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82,
];
/// An animated GIF image with 3 1x1 pixel frames (a red, green, and blue
/// frames). The GIF animates forever, and each frame has a 100ms delay.
const List<int> kAnimatedGif = <int> [
0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 0xa1, 0x03, 0x00,
0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0xff, 0x00, 0xff, 0xff, 0xff, 0x21,
0xff, 0x0b, 0x4e, 0x45, 0x54, 0x53, 0x43, 0x41, 0x50, 0x45, 0x32, 0x2e, 0x30,
0x03, 0x01, 0x00, 0x00, 0x00, 0x21, 0xf9, 0x04, 0x00, 0x0a, 0x00, 0xff, 0x00,
0x2c, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x4c,
0x01, 0x00, 0x21, 0xf9, 0x04, 0x00, 0x0a, 0x00, 0xff, 0x00, 0x2c, 0x00, 0x00,
0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x54, 0x01, 0x00, 0x21,
0xf9, 0x04, 0x00, 0x0a, 0x00, 0xff, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x00, 0x01,
0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x44, 0x01, 0x00, 0x3b,
];
/// Measures expense of constructing Image widgets.
class BenchBuildImage extends WidgetRecorder {
BenchBuildImage() : super(name: benchmarkName);
static const String benchmarkName = 'draw_image';
@override
Widget createWidget() {
return Directionality(
textDirection: TextDirection.ltr,
child: _RotatingWidget(
child: Row(children: <Widget>[
Image.memory(Uint8List.fromList(kTransparentImage)),
Image.memory(Uint8List.fromList(kAnimatedGif)),
]),
),
);
}
}
class _RotatingWidget extends StatefulWidget {
const _RotatingWidget({required this.child});
final Widget child;
@override
_RotatingWidgetState createState() => _RotatingWidgetState();
}
class _RotatingWidgetState extends State<_RotatingWidget> with SingleTickerProviderStateMixin {
late AnimationController controller;
@override
void initState() {
super.initState();
controller = AnimationController(
duration: const Duration(milliseconds: 200),
vsync: this,
)..repeat();
}
@override
void dispose() {
controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return AnimatedBuilder(
animation: controller,
builder: (BuildContext context, Widget? child) {
return Transform(
transform: Matrix4.identity()..rotateZ(2 * math.pi * controller.value),
child: widget.child,
);
},
);
}
}