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Added negative test and blur test to the wide gamut tests. (flutter#120914)
* Added negative test and blur test to the wide gamut tests. * switched back to dstOver * fixed blur test * analysis warnings * analyzer
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2 files changed

+188
-76
lines changed

2 files changed

+188
-76
lines changed

‎dev/integration_tests/wide_gamut_test/integration_test/app_test.dart

Lines changed: 37 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -23,7 +23,10 @@ bool _isAlmost(double x, double y, double epsilon) {
2323
return (x - y).abs() < epsilon;
2424
}
2525

26-
bool _findDeepRedBGRA10(Uint8List bytes, int width, int height) {
26+
List<double> _deepRed = <double>[1.0931, -0.2268, -0.1501];
27+
28+
bool _findBGRA10Color(
29+
Uint8List bytes, int width, int height, List<double> color) {
2730
final ByteData byteData = ByteData.sublistView(bytes);
2831
expect(bytes.lengthInBytes, width * height * 8);
2932
expect(bytes.lengthInBytes, byteData.lengthInBytes);
@@ -33,16 +36,17 @@ bool _findDeepRedBGRA10(Uint8List bytes, int width, int height) {
3336
final double blue = _decodeBGR10((pixel >> 6) & 0x3ff);
3437
final double green = _decodeBGR10((pixel >> 22) & 0x3ff);
3538
final double red = _decodeBGR10((pixel >> 38) & 0x3ff);
36-
if (_isAlmost(red, 1.0931, 0.01) &&
37-
_isAlmost(green, -0.2268, 0.01) &&
38-
_isAlmost(blue, -0.1501, 0.01)) {
39+
if (_isAlmost(red, color[0], 0.01) &&
40+
_isAlmost(green, color[1], 0.01) &&
41+
_isAlmost(blue, color[2], 0.01)) {
3942
foundDeepRed = true;
4043
}
4144
}
4245
return foundDeepRed;
4346
}
4447

45-
bool _findDeepRedBGR10(Uint8List bytes, int width, int height) {
48+
bool _findBGR10Color(
49+
Uint8List bytes, int width, int height, List<double> color) {
4650
final ByteData byteData = ByteData.sublistView(bytes);
4751
expect(bytes.lengthInBytes, width * height * 4);
4852
expect(bytes.lengthInBytes, byteData.lengthInBytes);
@@ -52,25 +56,25 @@ bool _findDeepRedBGR10(Uint8List bytes, int width, int height) {
5256
final double blue = _decodeBGR10(pixel & 0x3ff);
5357
final double green = _decodeBGR10((pixel >> 10) & 0x3ff);
5458
final double red = _decodeBGR10((pixel >> 20) & 0x3ff);
55-
if (_isAlmost(red, 1.0931, 0.01) &&
56-
_isAlmost(green, -0.2268, 0.01) &&
57-
_isAlmost(blue, -0.1501, 0.01)) {
59+
if (_isAlmost(red, color[0], 0.01) &&
60+
_isAlmost(green, color[1], 0.01) &&
61+
_isAlmost(blue, color[2], 0.01)) {
5862
foundDeepRed = true;
5963
}
6064
}
6165
return foundDeepRed;
6266
}
6367

64-
bool _findDeepRed(List<Object?> result) {
68+
bool _findColor(List<Object?> result, List<double> color) {
6569
expect(result, isNotNull);
6670
expect(result.length, 4);
6771
final int width = (result[0] as int?)!;
6872
final int height = (result[1] as int?)!;
6973
final String format = (result[2] as String?)!;
7074
if (format == 'MTLPixelFormatBGR10_XR') {
71-
return _findDeepRedBGR10((result[3] as Uint8List?)!, width, height);
75+
return _findBGR10Color((result[3] as Uint8List?)!, width, height, color);
7276
} else if (format == 'MTLPixelFormatBGRA10_XR') {
73-
return _findDeepRedBGRA10((result[3] as Uint8List?)!, width, height);
77+
return _findBGRA10Color((result[3] as Uint8List?)!, width, height, color);
7478
} else {
7579
fail('Unsupported pixel format: $format');
7680
}
@@ -87,7 +91,7 @@ void main() {
8791
const MethodChannel channel = MethodChannel('flutter/screenshot');
8892
final List<Object?> result =
8993
await channel.invokeMethod('test') as List<Object?>;
90-
expect(_findDeepRed(result), isTrue);
94+
expect(_findColor(result, _deepRed), isTrue);
9195
});
9296
testWidgets('look for display p3 deepest red', (WidgetTester tester) async {
9397
app.run(app.Setup.canvasSaveLayer);
@@ -96,7 +100,27 @@ void main() {
96100
const MethodChannel channel = MethodChannel('flutter/screenshot');
97101
final List<Object?> result =
98102
await channel.invokeMethod('test') as List<Object?>;
99-
expect(_findDeepRed(result), isTrue);
103+
expect(_findColor(result, _deepRed), isTrue);
104+
});
105+
testWidgets('no p3 deepest red without image', (WidgetTester tester) async {
106+
app.run(app.Setup.none);
107+
await tester.pumpAndSettle(const Duration(seconds: 2));
108+
109+
const MethodChannel channel = MethodChannel('flutter/screenshot');
110+
final List<Object?> result =
111+
await channel.invokeMethod('test') as List<Object?>;
112+
expect(_findColor(result, _deepRed), isFalse);
113+
expect(_findColor(result, <double>[0.0, 1.0, 0.0]), isFalse);
114+
});
115+
testWidgets('p3 deepest red with blur', (WidgetTester tester) async {
116+
app.run(app.Setup.blur);
117+
await tester.pumpAndSettle(const Duration(seconds: 2));
118+
119+
const MethodChannel channel = MethodChannel('flutter/screenshot');
120+
final List<Object?> result =
121+
await channel.invokeMethod('test') as List<Object?>;
122+
expect(_findColor(result, _deepRed), isTrue);
123+
expect(_findColor(result, <double>[0.0, 1.0, 0.0]), isTrue);
100124
});
101125
});
102126
}

‎dev/integration_tests/wide_gamut_test/lib/main.dart

Lines changed: 151 additions & 63 deletions
Original file line numberDiff line numberDiff line change
@@ -8,67 +8,140 @@ import 'package:flutter/material.dart';
88

99
/// A 100x100 png in Display P3 colorspace.
1010
const String _displayP3Logo =
11-
'iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAYAAABw4pVUAAABdWlDQ1BrQ0dDb2xvclNwYWNlRG'
12-
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13-
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14-
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15-
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16-
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17-
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18-
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20-
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21-
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22-
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23-
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24-
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25-
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26-
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27-
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28-
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29-
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30-
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31-
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32-
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33-
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35-
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66-
67-
void main() => run(Setup.canvasSaveLayer);
11+
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136+
'kMosUJk6g4dUBuRfvf1am9VRqzYAAAAASUVORK5CYII=';
137+
138+
void main() => run(Setup.blur);
68139

69140
enum Setup {
141+
none,
70142
image,
71143
canvasSaveLayer,
144+
blur,
72145
}
73146

74147
void run(Setup setup) {
@@ -104,18 +177,14 @@ class _SaveLayerDrawer extends CustomPainter {
104177
center: Offset.zero,
105178
width: _image!.width.toDouble(),
106179
height: _image!.height.toDouble());
107-
canvas.saveLayer(
108-
imageRect,
109-
Paint());
180+
canvas.saveLayer(imageRect, Paint());
110181
canvas.drawRect(
111182
imageRect.inflate(-_image!.width.toDouble() / 4.0),
112183
Paint()
113184
..style = PaintingStyle.stroke
114185
..color = const Color(0xffffffff)
115186
..strokeWidth = 3);
116-
canvas.saveLayer(
117-
imageRect,
118-
Paint()..blendMode = BlendMode.multiply);
187+
canvas.saveLayer(imageRect, Paint()..blendMode = BlendMode.dstOver);
119188
canvas.drawImage(_image!,
120189
Offset(-_image!.width / 2.0, -_image!.height / 2.0), Paint());
121190
canvas.restore();
@@ -165,12 +234,31 @@ class _MyHomePageState extends State<MyHomePage> {
165234
Widget build(BuildContext context) {
166235
late Widget imageWidget;
167236
switch (widget.setup) {
237+
case Setup.none:
238+
imageWidget = Container();
239+
break;
168240
case Setup.image:
169241
imageWidget = Image.memory(base64Decode(_displayP3Logo));
170242
break;
171243
case Setup.canvasSaveLayer:
172244
imageWidget = CustomPaint(painter: _SaveLayerDrawer(_image));
173245
break;
246+
case Setup.blur:
247+
imageWidget = Stack(
248+
children: <Widget>[
249+
const ColoredBox(
250+
color: Color(0xff00ff00),
251+
child: SizedBox(
252+
width: 100,
253+
height: 100,
254+
),
255+
),
256+
ImageFiltered(
257+
imageFilter: ui.ImageFilter.blur(sigmaX: 6, sigmaY: 6),
258+
child: Image.memory(base64Decode(_displayP3Logo))),
259+
],
260+
);
261+
break;
174262
}
175263

176264
return Scaffold(

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