5245d3889d
The old code had gotten crufty with all the refactors. This simplifies it down to what it really means. Also, add a bunch of tests.
374 lines
14 KiB
Dart
374 lines
14 KiB
Dart
// Copyright 2015 The Chromium 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 'package:flutter/rendering.dart';
|
|
import 'package:test/test.dart';
|
|
|
|
import 'rendering_tester.dart';
|
|
|
|
// before using this, consider using RenderSizedBox from rendering_tester.dart
|
|
class RenderTestBox extends RenderBox {
|
|
RenderTestBox(this._intrinsicDimensions);
|
|
|
|
final BoxConstraints _intrinsicDimensions;
|
|
|
|
@override
|
|
double getMinIntrinsicWidth(double height) {
|
|
return _intrinsicDimensions.minWidth;
|
|
}
|
|
|
|
@override
|
|
double getMaxIntrinsicWidth(double height) {
|
|
return _intrinsicDimensions.maxWidth;
|
|
}
|
|
|
|
@override
|
|
double getMinIntrinsicHeight(double width) {
|
|
return _intrinsicDimensions.minHeight;
|
|
}
|
|
|
|
@override
|
|
double getMaxIntrinsicHeight(double width) {
|
|
return _intrinsicDimensions.maxHeight;
|
|
}
|
|
|
|
@override
|
|
bool get sizedByParent => true;
|
|
|
|
@override
|
|
void performResize() {
|
|
size = constraints.constrain(new Size(_intrinsicDimensions.minWidth + (_intrinsicDimensions.maxWidth-_intrinsicDimensions.minWidth) / 2.0,
|
|
_intrinsicDimensions.minHeight + (_intrinsicDimensions.maxHeight-_intrinsicDimensions.minHeight) / 2.0));
|
|
}
|
|
}
|
|
|
|
void main() {
|
|
test('Shrink-wrapping width', () {
|
|
RenderBox child = new RenderTestBox(new BoxConstraints(minWidth: 10.0, maxWidth: 100.0, minHeight: 20.0, maxHeight: 200.0));
|
|
RenderBox parent = new RenderIntrinsicWidth(child: child);
|
|
layout(parent,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 5.0,
|
|
minHeight: 8.0,
|
|
maxWidth: 500.0,
|
|
maxHeight: 800.0
|
|
)
|
|
);
|
|
expect(parent.size.width, equals(100.0));
|
|
expect(parent.size.height, equals(110.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(0.0), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(0.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(0.0), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(0.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(10.0), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(10.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(10.0), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(10.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(80.0), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(80.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(80.0), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(80.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(double.INFINITY), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(double.INFINITY), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(double.INFINITY), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(double.INFINITY), equals(200.0));
|
|
});
|
|
|
|
test('Shrink-wrapping width (stepped width)', () {
|
|
RenderBox child = new RenderTestBox(new BoxConstraints(minWidth: 10.0, maxWidth: 100.0, minHeight: 20.0, maxHeight: 200.0));
|
|
RenderBox parent = new RenderIntrinsicWidth(child: child, stepWidth: 47.0);
|
|
layout(parent,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 5.0,
|
|
minHeight: 8.0,
|
|
maxWidth: 500.0,
|
|
maxHeight: 800.0
|
|
)
|
|
);
|
|
expect(parent.size.width, equals(3.0 * 47.0));
|
|
expect(parent.size.height, equals(110.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(0.0), equals(3.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicWidth(0.0), equals(3.0 * 47.0));
|
|
expect(parent.getMinIntrinsicHeight(0.0), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(0.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(10.0), equals(3.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicWidth(10.0), equals(3.0 * 47.0));
|
|
expect(parent.getMinIntrinsicHeight(10.0), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(10.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(80.0), equals(3.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicWidth(80.0), equals(3.0 * 47.0));
|
|
expect(parent.getMinIntrinsicHeight(80.0), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(80.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(double.INFINITY), equals(3.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicWidth(double.INFINITY), equals(3.0 * 47.0));
|
|
expect(parent.getMinIntrinsicHeight(double.INFINITY), equals(20.0));
|
|
expect(parent.getMaxIntrinsicHeight(double.INFINITY), equals(200.0));
|
|
});
|
|
|
|
test('Shrink-wrapping width (stepped height)', () {
|
|
RenderBox child = new RenderTestBox(new BoxConstraints(minWidth: 10.0, maxWidth: 100.0, minHeight: 20.0, maxHeight: 200.0));
|
|
RenderBox parent = new RenderIntrinsicWidth(child: child, stepHeight: 47.0);
|
|
layout(parent,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 5.0,
|
|
minHeight: 8.0,
|
|
maxWidth: 500.0,
|
|
maxHeight: 800.0
|
|
)
|
|
);
|
|
expect(parent.size.width, equals(100.0));
|
|
expect(parent.size.height, equals(235.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(0.0), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(0.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(0.0), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(0.0), equals(5.0 * 47.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(10.0), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(10.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(10.0), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(10.0), equals(5.0 * 47.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(80.0), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(80.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(80.0), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(80.0), equals(5.0 * 47.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(double.INFINITY), equals(100.0));
|
|
expect(parent.getMaxIntrinsicWidth(double.INFINITY), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(double.INFINITY), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(double.INFINITY), equals(5.0 * 47.0));
|
|
});
|
|
|
|
test('Shrink-wrapping width (stepped everything)', () {
|
|
RenderBox child = new RenderTestBox(new BoxConstraints(minWidth: 10.0, maxWidth: 100.0, minHeight: 20.0, maxHeight: 200.0));
|
|
RenderBox parent = new RenderIntrinsicWidth(child: child, stepHeight: 47.0, stepWidth: 37.0);
|
|
layout(parent,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 5.0,
|
|
minHeight: 8.0,
|
|
maxWidth: 500.0,
|
|
maxHeight: 800.0
|
|
)
|
|
);
|
|
expect(parent.size.width, equals(3.0 * 37.0));
|
|
expect(parent.size.height, equals(235.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(0.0), equals(3.0 * 37.0));
|
|
expect(parent.getMaxIntrinsicWidth(0.0), equals(3.0 * 37.0));
|
|
expect(parent.getMinIntrinsicHeight(0.0), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(0.0), equals(5.0 * 47.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(10.0), equals(3.0 * 37.0));
|
|
expect(parent.getMaxIntrinsicWidth(10.0), equals(3.0 * 37.0));
|
|
expect(parent.getMinIntrinsicHeight(10.0), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(10.0), equals(5.0 * 47.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(80.0), equals(3.0 * 37.0));
|
|
expect(parent.getMaxIntrinsicWidth(80.0), equals(3.0 * 37.0));
|
|
expect(parent.getMinIntrinsicHeight(80.0), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(80.0), equals(5.0 * 47.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(double.INFINITY), equals(3.0 * 37.0));
|
|
expect(parent.getMaxIntrinsicWidth(double.INFINITY), equals(3.0 * 37.0));
|
|
expect(parent.getMinIntrinsicHeight(double.INFINITY), equals(1.0 * 47.0));
|
|
expect(parent.getMaxIntrinsicHeight(double.INFINITY), equals(5.0 * 47.0));
|
|
});
|
|
|
|
test('Shrink-wrapping height', () {
|
|
RenderBox child = new RenderTestBox(new BoxConstraints(minWidth: 10.0, maxWidth: 100.0, minHeight: 20.0, maxHeight: 200.0));
|
|
RenderBox parent = new RenderIntrinsicHeight(child: child);
|
|
layout(parent,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 5.0,
|
|
minHeight: 8.0,
|
|
maxWidth: 500.0,
|
|
maxHeight: 800.0
|
|
)
|
|
);
|
|
expect(parent.size.width, equals(55.0));
|
|
expect(parent.size.height, equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(0.0), equals(10.0));
|
|
expect(parent.getMaxIntrinsicWidth(0.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(0.0), equals(200.0));
|
|
expect(parent.getMaxIntrinsicHeight(0.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(10.0), equals(10.0));
|
|
expect(parent.getMaxIntrinsicWidth(10.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(10.0), equals(200.0));
|
|
expect(parent.getMaxIntrinsicHeight(10.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(80.0), equals(10.0));
|
|
expect(parent.getMaxIntrinsicWidth(80.0), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(80.0), equals(200.0));
|
|
expect(parent.getMaxIntrinsicHeight(80.0), equals(200.0));
|
|
|
|
expect(parent.getMinIntrinsicWidth(double.INFINITY), equals(10.0));
|
|
expect(parent.getMaxIntrinsicWidth(double.INFINITY), equals(100.0));
|
|
expect(parent.getMinIntrinsicHeight(double.INFINITY), equals(200.0));
|
|
expect(parent.getMaxIntrinsicHeight(double.INFINITY), equals(200.0));
|
|
});
|
|
|
|
test('Padding and boring intrinsics', () {
|
|
RenderBox box = new RenderPadding(
|
|
padding: new EdgeInsets.all(15.0),
|
|
child: new RenderSizedBox(const Size(20.0, 20.0))
|
|
);
|
|
|
|
expect(box.getMinIntrinsicWidth(0.0), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(0.0), 50.0);
|
|
expect(box.getMinIntrinsicHeight(0.0), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(0.0), 50.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(10.0), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(10.0), 50.0);
|
|
expect(box.getMinIntrinsicHeight(10.0), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(10.0), 50.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(80.0), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(80.0), 50.0);
|
|
expect(box.getMinIntrinsicHeight(80.0), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(80.0), 50.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(double.INFINITY), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(double.INFINITY), 50.0);
|
|
expect(box.getMinIntrinsicHeight(double.INFINITY), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(double.INFINITY), 50.0);
|
|
|
|
// also a smoke test:
|
|
layout(
|
|
box,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 10.0,
|
|
minHeight: 10.0,
|
|
maxWidth: 10.0,
|
|
maxHeight: 10.0
|
|
)
|
|
);
|
|
});
|
|
|
|
test('Padding and interesting intrinsics', () {
|
|
RenderBox box = new RenderPadding(
|
|
padding: new EdgeInsets.all(15.0),
|
|
child: new RenderAspectRatio(aspectRatio: 1.0)
|
|
);
|
|
|
|
expect(box.getMinIntrinsicWidth(0.0), 30.0);
|
|
expect(box.getMaxIntrinsicWidth(0.0), 30.0);
|
|
expect(box.getMinIntrinsicHeight(0.0), 30.0);
|
|
expect(box.getMaxIntrinsicHeight(0.0), 30.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(10.0), 30.0);
|
|
expect(box.getMaxIntrinsicWidth(10.0), 30.0);
|
|
expect(box.getMinIntrinsicHeight(10.0), 30.0);
|
|
expect(box.getMaxIntrinsicHeight(10.0), 30.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(80.0), 80.0);
|
|
expect(box.getMaxIntrinsicWidth(80.0), 80.0);
|
|
expect(box.getMinIntrinsicHeight(80.0), 80.0);
|
|
expect(box.getMaxIntrinsicHeight(80.0), 80.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(double.INFINITY), 30.0);
|
|
expect(box.getMaxIntrinsicWidth(double.INFINITY), 30.0);
|
|
expect(box.getMinIntrinsicHeight(double.INFINITY), 30.0);
|
|
expect(box.getMaxIntrinsicHeight(double.INFINITY), 30.0);
|
|
|
|
// also a smoke test:
|
|
layout(
|
|
box,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 10.0,
|
|
minHeight: 10.0,
|
|
maxWidth: 10.0,
|
|
maxHeight: 10.0
|
|
)
|
|
);
|
|
});
|
|
|
|
test('Padding and boring intrinsics', () {
|
|
RenderBox box = new RenderPadding(
|
|
padding: new EdgeInsets.all(15.0),
|
|
child: new RenderSizedBox(const Size(20.0, 20.0))
|
|
);
|
|
|
|
expect(box.getMinIntrinsicWidth(0.0), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(0.0), 50.0);
|
|
expect(box.getMinIntrinsicHeight(0.0), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(0.0), 50.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(10.0), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(10.0), 50.0);
|
|
expect(box.getMinIntrinsicHeight(10.0), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(10.0), 50.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(80.0), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(80.0), 50.0);
|
|
expect(box.getMinIntrinsicHeight(80.0), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(80.0), 50.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(double.INFINITY), 50.0);
|
|
expect(box.getMaxIntrinsicWidth(double.INFINITY), 50.0);
|
|
expect(box.getMinIntrinsicHeight(double.INFINITY), 50.0);
|
|
expect(box.getMaxIntrinsicHeight(double.INFINITY), 50.0);
|
|
|
|
// also a smoke test:
|
|
layout(
|
|
box,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 10.0,
|
|
minHeight: 10.0,
|
|
maxWidth: 10.0,
|
|
maxHeight: 10.0
|
|
)
|
|
);
|
|
});
|
|
|
|
test('Padding and interesting intrinsics', () {
|
|
RenderBox box = new RenderPadding(
|
|
padding: new EdgeInsets.all(15.0),
|
|
child: new RenderAspectRatio(aspectRatio: 1.0)
|
|
);
|
|
|
|
expect(box.getMinIntrinsicWidth(0.0), 30.0);
|
|
expect(box.getMaxIntrinsicWidth(0.0), 30.0);
|
|
expect(box.getMinIntrinsicHeight(0.0), 30.0);
|
|
expect(box.getMaxIntrinsicHeight(0.0), 30.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(10.0), 30.0);
|
|
expect(box.getMaxIntrinsicWidth(10.0), 30.0);
|
|
expect(box.getMinIntrinsicHeight(10.0), 30.0);
|
|
expect(box.getMaxIntrinsicHeight(10.0), 30.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(80.0), 80.0);
|
|
expect(box.getMaxIntrinsicWidth(80.0), 80.0);
|
|
expect(box.getMinIntrinsicHeight(80.0), 80.0);
|
|
expect(box.getMaxIntrinsicHeight(80.0), 80.0);
|
|
|
|
expect(box.getMinIntrinsicWidth(double.INFINITY), 30.0);
|
|
expect(box.getMaxIntrinsicWidth(double.INFINITY), 30.0);
|
|
expect(box.getMinIntrinsicHeight(double.INFINITY), 30.0);
|
|
expect(box.getMaxIntrinsicHeight(double.INFINITY), 30.0);
|
|
|
|
// also a smoke test:
|
|
layout(
|
|
box,
|
|
constraints: new BoxConstraints(
|
|
minWidth: 10.0,
|
|
minHeight: 10.0,
|
|
maxWidth: 10.0,
|
|
maxHeight: 10.0
|
|
)
|
|
);
|
|
});
|
|
}
|