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9bc64540c5
Now a RenderBox is considered hit if one of its children are hit or it itself decides that it's hit. In particular, empty space inside a flex won't be hit because none of the children are located there and a RenderFlex doesn't consider itself hittable. Fixes #53 Fixes #1221
44 lines
1.2 KiB
Dart
44 lines
1.2 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 'box.dart';
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import 'debug.dart';
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import 'object.dart';
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const double _kMaxWidth = 100000.0;
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const double _kMaxHeight = 100000.0;
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/// A render object used as a placeholder when an error occurs
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class RenderErrorBox extends RenderBox {
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double getMinIntrinsicWidth(BoxConstraints constraints) {
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return constraints.constrainWidth(0.0);
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}
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double getMaxIntrinsicWidth(BoxConstraints constraints) {
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return constraints.constrainWidth(_kMaxWidth);
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}
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double getMinIntrinsicHeight(BoxConstraints constraints) {
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return constraints.constrainHeight(0.0);
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}
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double getMaxIntrinsicHeight(BoxConstraints constraints) {
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return constraints.constrainHeight(_kMaxHeight);
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}
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bool get sizedByParent => true;
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bool hitTestSelf(Point position) => true;
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void performResize() {
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size = constraints.constrain(const Size(_kMaxWidth, _kMaxHeight));
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}
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void paint(PaintingContext context, Offset offset) {
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context.canvas.drawRect(offset & size, new Paint() .. color = debugErrorBoxColor);
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}
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}
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