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flutter_flutter/packages/flutter/test/rendering/slivers_test.dart
Adam Barth e0b12ca17e Two becomes one (#8253) 
Rename all the "2" classes related to scrolling to remove the "2". Now that the
old scrolling code is gone, we don't need to use the suffix.
2017-02-17 14:06:15 -08:00

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// 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';
void main() {
test('RenderViewport basic test - no children', () {
RenderViewport root = new RenderViewport(
offset: new ViewportOffset.zero(),
);
layout(root);
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
});
test('RenderViewport basic test - down', () {
RenderBox a, b, c, d, e;
RenderViewport root = new RenderViewport(
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(100.0, 400.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 400.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(a.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 400.0));
expect(b.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 800.0));
expect(c.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 1000.0));
expect(d.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 1000.0));
expect(e.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 1000.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -200.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 200.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -600.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -200.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 200.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -900.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -500.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -100.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 300.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(130.0, 150.0));
expect(result.path.first.target, equals(c));
});
test('RenderViewport basic test - up', () {
RenderBox a, b, c, d, e;
RenderViewport root = new RenderViewport(
axisDirection: AxisDirection.up,
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(100.0, 400.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 200.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -200.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 400.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 800.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 400.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 1100.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 700.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 300.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -100.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(150.0, 350.0));
expect(result.path.first.target, equals(c));
});
test('RenderViewport basic test - right', () {
RenderBox a, b, c, d, e;
RenderViewport root = new RenderViewport(
axisDirection: AxisDirection.right,
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(400.0, 100.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(400.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(-600.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(-900.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(-500.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(-100.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(300.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(700.0, 0.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(150.0, 450.0));
expect(result.path.first.target, equals(c));
});
test('RenderViewport basic test - left', () {
RenderBox a, b, c, d, e;
RenderViewport root = new RenderViewport(
axisDirection: AxisDirection.left,
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(400.0, 100.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(400.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(1000.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(1300.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(900.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(500.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(100.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-300.0, 0.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(550.0, 150.0));
expect(result.path.first.target, equals(c));
});
// TODO(ianh): test anchor
// TODO(ianh): test center
// TODO(ianh): test semantics
test('RenderShrinkWrappingViewport basic test - no children', () {
RenderShrinkWrappingViewport root = new RenderShrinkWrappingViewport(
offset: new ViewportOffset.zero(),
);
layout(root);
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
});
test('RenderShrinkWrappingViewport basic test - down', () {
RenderBox a, b, c, d, e;
RenderShrinkWrappingViewport root = new RenderShrinkWrappingViewport(
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(100.0, 400.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 400.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(a.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 400.0));
expect(b.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 800.0));
expect(c.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 1000.0));
expect(d.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 1000.0));
expect(e.localToGlobal(const Point(800.0, 400.0)), const Point(800.0, 1000.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -200.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 200.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -600.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -200.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 200.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -900.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -500.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -100.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 300.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 600.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(130.0, 150.0));
expect(result.path.first.target, equals(c));
});
test('RenderShrinkWrappingViewport basic test - up', () {
RenderBox a, b, c, d, e;
RenderShrinkWrappingViewport root = new RenderShrinkWrappingViewport(
axisDirection: AxisDirection.up,
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(100.0, 400.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(100.0, 400.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 200.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -200.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 400.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 800.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 400.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 1100.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 700.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 300.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -100.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, -400.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(150.0, 350.0));
expect(result.path.first.target, equals(c));
});
test('RenderShrinkWrappingViewport basic test - right', () {
RenderBox a, b, c, d, e;
RenderShrinkWrappingViewport root = new RenderShrinkWrappingViewport(
axisDirection: AxisDirection.right,
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(400.0, 100.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(400.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(-600.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(800.0, 0.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(-900.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(-500.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(-100.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(300.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(700.0, 0.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(150.0, 450.0));
expect(result.path.first.target, equals(c));
});
test('RenderShrinkWrappingViewport basic test - left', () {
RenderBox a, b, c, d, e;
RenderShrinkWrappingViewport root = new RenderShrinkWrappingViewport(
axisDirection: AxisDirection.left,
offset: new ViewportOffset.zero(),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: a = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: b = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: c = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: d = new RenderSizedBox(const Size(400.0, 100.0))),
new RenderSliverToBoxAdapter(child: e = new RenderSizedBox(const Size(400.0, 100.0))),
],
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(400.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(0.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
root.offset = new ViewportOffset.fixed(200.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
root.offset = new ViewportOffset.fixed(600.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(1000.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(600.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(200.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(-200.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-400.0, 0.0));
root.offset = new ViewportOffset.fixed(900.0);
pumpFrame();
expect(a.localToGlobal(const Point(0.0, 0.0)), const Point(1300.0, 0.0));
expect(b.localToGlobal(const Point(0.0, 0.0)), const Point(900.0, 0.0));
expect(c.localToGlobal(const Point(0.0, 0.0)), const Point(500.0, 0.0));
expect(d.localToGlobal(const Point(0.0, 0.0)), const Point(100.0, 0.0));
expect(e.localToGlobal(const Point(0.0, 0.0)), const Point(-300.0, 0.0));
HitTestResult result = new HitTestResult();
root.hitTest(result, position: const Point(550.0, 150.0));
expect(result.path.first.target, equals(c));
});
test('RenderShrinkWrappingViewport shrinkwrap test - 1 child', () {
RenderBox child;
RenderBox root = new RenderPositionedBox(
child: child = new RenderShrinkWrappingViewport(
axisDirection: AxisDirection.left,
offset: new ViewportOffset.fixed(200.0),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: new RenderSizedBox(const Size(400.0, 100.0))),
],
),
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(child.size.width, equals(400.0));
expect(child.size.height, equals(600.0));
});
test('RenderShrinkWrappingViewport shrinkwrap test - 2 children', () {
RenderBox child;
RenderBox root = new RenderPositionedBox(
child: child = new RenderShrinkWrappingViewport(
axisDirection: AxisDirection.right,
offset: new ViewportOffset.fixed(200.0),
children: <RenderSliver>[
new RenderSliverToBoxAdapter(child: new RenderSizedBox(const Size(300.0, 100.0))),
new RenderSliverToBoxAdapter(child: new RenderSizedBox(const Size(150.0, 100.0))),
],
),
);
layout(root);
expect(root.size.width, equals(800.0));
expect(root.size.height, equals(600.0));
expect(child.size.width, equals(450.0));
expect(child.size.height, equals(600.0));
});
}
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