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bf017b79b3
* Manually fix every use of Point.x and Point.y
Some of these were moved to dx/dy, but not all.
* Manually convert uses of the old gradient API
* Remove old reference to Point.
* Mechanical changes
I applied the following at the root of the Flutter repository:
git ls-files -z | xargs -0 sed -i 's/\bPoint[.]origin\b/Offset.zero/g'
git ls-files -z | xargs -0 sed -i 's/\bPoint[.]lerp\b/Offset.lerp/g'
git ls-files -z | xargs -0 sed -i 's/\bnew Point\b/new Offset/g'
git ls-files -z | xargs -0 sed -i 's/\bconst Point\b/const Offset/g'
git ls-files -z | xargs -0 sed -i 's/\bstatic Point /static Offset /g'
git ls-files -z | xargs -0 sed -i 's/\bfinal Point /final Offset /g'
git ls-files -z | xargs -0 sed -i 's/^\( *\)Point /\1Offset /g'
git ls-files -z | xargs -0 sed -i 's/ui[.]Point\b/ui.Offset/g'
git ls-files -z | xargs -0 sed -i 's/(Point\b/(Offset/g'
git ls-files -z | xargs -0 sed -i 's/\([[{,]\) Point\b/\1 Offset/g'
git ls-files -z | xargs -0 sed -i 's/@required Point\b/@required Offset/g'
git ls-files -z | xargs -0 sed -i 's/<Point>/<Offset>/g'
git ls-files -z | xargs -0 sed -i 's/[.]toOffset()//g'
git ls-files -z | xargs -0 sed -i 's/[.]toPoint()//g'
git ls-files -z | xargs -0 sed -i 's/\bshow Point, /show /g'
git ls-files -z | xargs -0 sed -i 's/\bshow Point;/show Offset;/g'
* Mechanical changes - dartdocs
I applied the following at the root of the Flutter repository:
git ls-files -z | xargs -0 sed -i 's/\ba \[Point\]/an [Offset]/g'
git ls-files -z | xargs -0 sed -i 's/\[Point\]/[Offset]/g'
* Further improvements and a test
* Fix minor errors from rebasing...
* Roll engine
51 lines
1.6 KiB
Dart
51 lines
1.6 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 'package:flutter/rendering.dart';
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import 'package:flutter/widgets.dart';
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class RenderDots extends RenderConstrainedBox {
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RenderDots() : super(additionalConstraints: const BoxConstraints.expand());
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// Makes this render box hittable so that we'll get pointer events.
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@override
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bool hitTestSelf(Offset position) => true;
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final Map<int, Offset> _dots = <int, Offset>{};
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@override
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void handleEvent(PointerEvent event, BoxHitTestEntry entry) {
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if (event is PointerDownEvent || event is PointerMoveEvent) {
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_dots[event.pointer] = event.position;
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markNeedsPaint();
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} else if (event is PointerUpEvent || event is PointerCancelEvent) {
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_dots.remove(event.pointer);
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markNeedsPaint();
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}
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}
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@override
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void paint(PaintingContext context, Offset offset) {
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final Canvas canvas = context.canvas;
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canvas.drawRect(offset & size, new Paint()..color = const Color(0xFF0000FF));
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final Paint paint = new Paint()..color = const Color(0xFF00FF00);
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for (Offset point in _dots.values)
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canvas.drawCircle(point, 50.0, paint);
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super.paint(context, offset);
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}
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}
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class Dots extends SingleChildRenderObjectWidget {
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Dots({ Key key, Widget child }) : super(key: key, child: child);
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@override
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RenderDots createRenderObject(BuildContext context) => new RenderDots();
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}
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void main() {
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runApp(new Dots(child: const Center(child: const Text('Touch me!'))));
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}
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