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This adds support to PlatformViewLayer for handling hover events. Prior to this, PlatformViewLayers only supported events forwarded by the gesture recognizers associated with the PlatformViewRenderBox. Hover events don't participate in gesture recognition and as such are dropped in GestureBinding. That said, hover event processing in platform views is expected for desktop and other platforms with hover event support. This adds support for passing an optional MouseTrackerAnnotation to PlatformViewLayer. PlatformViewRenderBox populates this with a mouse tracker annotation that forwards hover events to PlatformViewController.dispatchPointerEvent() for handling by users.
86 lines
3.2 KiB
Dart
86 lines
3.2 KiB
Dart
// Copyright 2014 The Flutter 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/foundation.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:flutter/material.dart';
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import '../gestures/gesture_tester.dart';
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import '../services/fake_platform_views.dart';
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import 'rendering_tester.dart';
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void main() {
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group('PlatformViewRenderBox', () {
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FakePlatformViewController fakePlatformViewController;
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PlatformViewRenderBox platformViewRenderBox;
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setUp(() {
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fakePlatformViewController = FakePlatformViewController(0);
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platformViewRenderBox = PlatformViewRenderBox(
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controller: fakePlatformViewController,
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hitTestBehavior: PlatformViewHitTestBehavior.opaque,
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gestureRecognizers: <Factory<OneSequenceGestureRecognizer>>{
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Factory<VerticalDragGestureRecognizer>(
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() {
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return VerticalDragGestureRecognizer();
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},
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),
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},
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);
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});
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test('layout should size to max constraint', () {
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layout(platformViewRenderBox);
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platformViewRenderBox.layout(const BoxConstraints(minWidth: 50, minHeight: 50, maxWidth: 100, maxHeight: 100));
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expect(platformViewRenderBox.size, const Size(100, 100));
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});
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test('send semantics update if id is changed', (){
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final RenderObject tree = RenderConstrainedBox(
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additionalConstraints: const BoxConstraints.tightFor(height: 20.0, width: 20.0),
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child: platformViewRenderBox,
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);
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int semanticsUpdateCount = 0;
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final SemanticsHandle semanticsHandle = renderer.pipelineOwner.ensureSemantics(
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listener: () {
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++semanticsUpdateCount;
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}
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);
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layout(tree, phase: EnginePhase.flushSemantics);
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// Initial semantics update
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expect(semanticsUpdateCount, 1);
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semanticsUpdateCount = 0;
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// Request semantics update even though nothing changed.
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platformViewRenderBox.markNeedsSemanticsUpdate();
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pumpFrame(phase: EnginePhase.flushSemantics);
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expect(semanticsUpdateCount, 0);
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semanticsUpdateCount = 0;
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final FakePlatformViewController updatedFakePlatformViewController = FakePlatformViewController(10);
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platformViewRenderBox.controller = updatedFakePlatformViewController;
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pumpFrame(phase: EnginePhase.flushSemantics);
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// Update id should update the semantics.
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expect(semanticsUpdateCount, 1);
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semanticsHandle.dispose();
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});
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testGesture('hover events are dispatched via PlatformViewController.dispatchPointerEvent', (GestureTester tester) {
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layout(platformViewRenderBox);
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pumpFrame(phase: EnginePhase.flushSemantics);
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final TestPointer pointer = TestPointer(1, PointerDeviceKind.mouse);
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tester.route(pointer.addPointer());
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tester.route(pointer.hover(const Offset(10, 10)));
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expect(fakePlatformViewController.dispatchedPointerEvents, isNotEmpty);
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});
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}, skip: isBrowser); // TODO(yjbanov): fails on Web with obscured stack trace: https://github.com/flutter/flutter/issues/42770
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}
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