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abdullh.alsoleman
Front-End
Commits
333c9618
Unverified
Commit
333c9618
authored
Aug 06, 2019
by
Chris Yang
Committed by
GitHub
Aug 06, 2019
Browse files
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Plain Diff
Extract common PlatformView functionality: Gesture and PointerEvent (#37497)
parent
0cd0c660
Changes
6
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Showing
6 changed files
with
434 additions
and
71 deletions
+434
-71
platform_view.dart
packages/flutter/lib/src/rendering/platform_view.dart
+102
-66
platform_views.dart
packages/flutter/lib/src/services/platform_views.dart
+4
-0
platform_view.dart
packages/flutter/lib/src/widgets/platform_view.dart
+53
-3
platform_view_test.dart
packages/flutter/test/rendering/platform_view_test.dart
+12
-1
fake_platform_views.dart
packages/flutter/test/services/fake_platform_views.dart
+13
-0
platform_view_test.dart
packages/flutter/test/widgets/platform_view_test.dart
+250
-1
No files found.
packages/flutter/lib/src/rendering/platform_view.dart
View file @
333c9618
...
...
@@ -75,12 +75,12 @@ Set<Type> _factoriesTypeSet<T>(Set<Factory<T>> factories) {
///
/// * [AndroidView] which is a widget that is used to show an Android view.
/// * [PlatformViewsService] which is a service for controlling platform views.
class
RenderAndroidView
extends
RenderBox
{
class
RenderAndroidView
extends
RenderBox
with
_PlatformViewGestureMixin
{
/// Creates a render object for an Android view.
RenderAndroidView
({
@required
AndroidViewController
viewController
,
@required
this
.
hitTestBehavior
,
@required
PlatformViewHitTestBehavior
hitTestBehavior
,
@required
Set
<
Factory
<
OneSequenceGestureRecognizer
>>
gestureRecognizers
,
})
:
assert
(
viewController
!=
null
),
assert
(
hitTestBehavior
!=
null
),
...
...
@@ -89,6 +89,7 @@ class RenderAndroidView extends RenderBox {
_motionEventsDispatcher
=
_MotionEventsDispatcher
(
globalToLocal
,
viewController
);
updateGestureRecognizers
(
gestureRecognizers
);
_viewController
.
addOnPlatformViewCreatedListener
(
_onPlatformViewCreated
);
this
.
hitTestBehavior
=
hitTestBehavior
;
}
_PlatformViewState
_state
=
_PlatformViewState
.
uninitialized
;
...
...
@@ -117,11 +118,6 @@ class RenderAndroidView extends RenderBox {
markNeedsSemanticsUpdate
();
}
/// How to behave during hit testing.
// The implicit setter is enough here as changing this value will just affect
// any newly arriving events there's nothing we need to invalidate.
PlatformViewHitTestBehavior
hitTestBehavior
;
/// {@template flutter.rendering.platformView.updateGestureRecognizers}
/// Updates which gestures should be forwarded to the platform view.
///
...
...
@@ -139,16 +135,7 @@ class RenderAndroidView extends RenderBox {
/// Any active gesture arena the Android view participates in is rejected when the
/// set of gesture recognizers is changed.
void
updateGestureRecognizers
(
Set
<
Factory
<
OneSequenceGestureRecognizer
>>
gestureRecognizers
)
{
assert
(
gestureRecognizers
!=
null
);
assert
(
_factoriesTypeSet
(
gestureRecognizers
).
length
==
gestureRecognizers
.
length
,
'There were multiple gesture recognizer factories for the same type, there must only be a single '
'gesture recognizer factory for each gesture recognizer type.'
,);
if
(
_factoryTypesSetEquals
(
gestureRecognizers
,
_gestureRecognizer
?.
gestureRecognizerFactories
))
{
return
;
}
_gestureRecognizer
?.
dispose
();
_gestureRecognizer
=
_AndroidViewGestureRecognizer
(
_motionEventsDispatcher
,
gestureRecognizers
);
_updateGestureRecognizersWithCallBack
(
gestureRecognizers
,
_motionEventsDispatcher
.
handlePointerEvent
);
}
@override
...
...
@@ -162,8 +149,6 @@ class RenderAndroidView extends RenderBox {
_MotionEventsDispatcher
_motionEventsDispatcher
;
_AndroidViewGestureRecognizer
_gestureRecognizer
;
@override
void
performResize
()
{
size
=
constraints
.
biggest
;
...
...
@@ -229,24 +214,6 @@ class RenderAndroidView extends RenderBox {
));
}
@override
bool
hitTest
(
BoxHitTestResult
result
,
{
Offset
position
})
{
if
(
hitTestBehavior
==
PlatformViewHitTestBehavior
.
transparent
||
!
size
.
contains
(
position
))
return
false
;
result
.
add
(
BoxHitTestEntry
(
this
,
position
));
return
hitTestBehavior
==
PlatformViewHitTestBehavior
.
opaque
;
}
@override
bool
hitTestSelf
(
Offset
position
)
=>
hitTestBehavior
!=
PlatformViewHitTestBehavior
.
transparent
;
@override
void
handleEvent
(
PointerEvent
event
,
HitTestEntry
entry
)
{
if
(
event
is
PointerDownEvent
)
{
_gestureRecognizer
.
addPointer
(
event
);
}
}
@override
void
describeSemanticsConfiguration
(
SemanticsConfiguration
config
)
{
super
.
describeSemanticsConfiguration
(
config
);
...
...
@@ -257,12 +224,6 @@ class RenderAndroidView extends RenderBox {
config
.
platformViewId
=
_viewController
.
id
;
}
}
@override
void
detach
()
{
_gestureRecognizer
.
reset
();
super
.
detach
();
}
}
/// A render object for an iOS UIKit UIView.
...
...
@@ -486,15 +447,17 @@ class _UiKitViewGestureRecognizer extends OneSequenceGestureRecognizer {
}
}
typedef
_HandlePointerEvent
=
void
Function
(
PointerEvent
event
);
// This recognizer constructs gesture recognizers from a set of gesture recognizer factories
// it was give, adds all of them to a gesture arena team with the _
Android
ViewGestureRecognizer
// it was give, adds all of them to a gesture arena team with the _
Platform
ViewGestureRecognizer
// as the team captain.
// As long as t
a gesture arena is unresolved
the recognizer caches all pointer events.
// When the team wins
the recognizer sends all the cached point events to the embedded Android view
, and
// sets itself to a "forwarding mode" where it will forward any new pointer event to
the Android view
.
class
_
Android
ViewGestureRecognizer
extends
OneSequenceGestureRecognizer
{
_
Android
ViewGestureRecognizer
(
this
.
dispatcher
,
// As long as t
he gesture arena is unresolved,
the recognizer caches all pointer events.
// When the team wins
, the recognizer sends all the cached pointer events to `_handlePointerEvent`
, and
// sets itself to a "forwarding mode" where it will forward any new pointer event to
`_handlePointerEvent`
.
class
_
Platform
ViewGestureRecognizer
extends
OneSequenceGestureRecognizer
{
_
Platform
ViewGestureRecognizer
(
_HandlePointerEvent
handlePointerEvent
,
this
.
gestureRecognizerFactories
,
{
PointerDeviceKind
kind
,
})
:
super
(
kind:
kind
)
{
...
...
@@ -505,18 +468,19 @@ class _AndroidViewGestureRecognizer extends OneSequenceGestureRecognizer {
return
recognizerFactory
.
constructor
()..
team
=
team
;
},
).
toSet
();
_handlePointerEvent
=
handlePointerEvent
;
}
final
_MotionEventsDispatcher
dispatcher
;
_HandlePointerEvent
_handlePointerEvent
;
// Maps a pointer to a list of its cached pointer events.
// Before the arena for a pointer is resolved all events are cached here, if we win the arena
// the cached events are dispatched to
the view
, if we lose the arena we clear the cache for
// the cached events are dispatched to
`_handlePointerEvent`
, if we lose the arena we clear the cache for
// the pointer.
final
Map
<
int
,
List
<
PointerEvent
>>
cachedEvents
=
<
int
,
List
<
PointerEvent
>>{};
// Pointer for which we have already won the arena, events for pointers in this set are
// immediately dispatched to
the Android view
.
// immediately dispatched to
`_handlePointerEvent`
.
final
Set
<
int
>
forwardedPointers
=
<
int
>{};
// We use OneSequenceGestureRecognizers as they support gesture arena teams.
...
...
@@ -534,7 +498,7 @@ class _AndroidViewGestureRecognizer extends OneSequenceGestureRecognizer {
}
@override
String
get
debugDescription
=>
'
Android
view'
;
String
get
debugDescription
=>
'
Platform
view'
;
@override
void
didStopTrackingLastPointer
(
int
pointer
)
{
}
...
...
@@ -542,16 +506,16 @@ class _AndroidViewGestureRecognizer extends OneSequenceGestureRecognizer {
@override
void
handleEvent
(
PointerEvent
event
)
{
if
(!
forwardedPointers
.
contains
(
event
.
pointer
))
{
cacheEvent
(
event
);
_
cacheEvent
(
event
);
}
else
{
dispatcher
.
handlePointerEvent
(
event
);
_
handlePointerEvent
(
event
);
}
stopTrackingIfPointerNoLongerDown
(
event
);
}
@override
void
acceptGesture
(
int
pointer
)
{
flushPointerCache
(
pointer
);
_
flushPointerCache
(
pointer
);
forwardedPointers
.
add
(
pointer
);
}
...
...
@@ -561,15 +525,15 @@ class _AndroidViewGestureRecognizer extends OneSequenceGestureRecognizer {
cachedEvents
.
remove
(
pointer
);
}
void
cacheEvent
(
PointerEvent
event
)
{
void
_
cacheEvent
(
PointerEvent
event
)
{
if
(!
cachedEvents
.
containsKey
(
event
.
pointer
))
{
cachedEvents
[
event
.
pointer
]
=
<
PointerEvent
>
[];
}
cachedEvents
[
event
.
pointer
].
add
(
event
);
}
void
flushPointerCache
(
int
pointer
)
{
cachedEvents
.
remove
(
pointer
)?.
forEach
(
dispatcher
.
handlePointerEvent
);
void
_
flushPointerCache
(
int
pointer
)
{
cachedEvents
.
remove
(
pointer
)?.
forEach
(
_
handlePointerEvent
);
}
@override
...
...
@@ -728,18 +692,24 @@ class _MotionEventsDispatcher {
/// A render object for embedding a platform view.
///
/// [PlatformViewRenderBox] presents a platform view by adding a [PlatformViewLayer] layer,
integrates it with the gesture arenas system
/// and adds relevant semantic nodes to the semantics tree.
class
PlatformViewRenderBox
extends
RenderBox
{
/// [PlatformViewRenderBox] presents a platform view by adding a [PlatformViewLayer] layer,
///
integrates it with the gesture arenas system
and adds relevant semantic nodes to the semantics tree.
class
PlatformViewRenderBox
extends
RenderBox
with
_PlatformViewGestureMixin
{
/// Creating a render object for a [PlatformViewSurface].
///
/// The `controller` parameter must not be null.
PlatformViewRenderBox
({
@required
PlatformViewController
controller
,
})
:
assert
(
controller
!=
null
&&
controller
.
viewId
!=
null
&&
controller
.
viewId
>
-
1
),
_controller
=
controller
;
@required
PlatformViewHitTestBehavior
hitTestBehavior
,
@required
Set
<
Factory
<
OneSequenceGestureRecognizer
>>
gestureRecognizers
,
})
:
assert
(
controller
!=
null
&&
controller
.
viewId
!=
null
&&
controller
.
viewId
>
-
1
),
assert
(
hitTestBehavior
!=
null
),
assert
(
gestureRecognizers
!=
null
),
_controller
=
controller
{
this
.
hitTestBehavior
=
hitTestBehavior
;
updateGestureRecognizers
(
gestureRecognizers
);
}
/// Sets the [controller] for this render object.
///
...
...
@@ -759,6 +729,19 @@ class PlatformViewRenderBox extends RenderBox {
}
}
/// How to behave during hit testing.
// The implicit setter is enough here as changing this value will just affect
// any newly arriving events there's nothing we need to invalidate.
// PlatformViewHitTestBehavior hitTestBehavior;
/// {@macro flutter.rendering.platformView.updateGestureRecognizers}
///
/// Any active gesture arena the `PlatformView` participates in is rejected when the
/// set of gesture recognizers is changed.
void
updateGestureRecognizers
(
Set
<
Factory
<
OneSequenceGestureRecognizer
>>
gestureRecognizers
)
{
_updateGestureRecognizersWithCallBack
(
gestureRecognizers
,
_controller
.
dispatchPointerEvent
);
}
PlatformViewController
_controller
;
@override
...
...
@@ -791,3 +774,56 @@ class PlatformViewRenderBox extends RenderBox {
config
.
platformViewId
=
_controller
.
viewId
;
}
}
/// The Mixin handling the pointer events and gestures of a platform view render box.
mixin
_PlatformViewGestureMixin
on
RenderBox
{
/// How to behave during hit testing.
// The implicit setter is enough here as changing this value will just affect
// any newly arriving events there's nothing we need to invalidate.
PlatformViewHitTestBehavior
hitTestBehavior
;
/// {@macro flutter.rendering.platformView.updateGestureRecognizers}
///
/// Any active gesture arena the `PlatformView` participates in is rejected when the
/// set of gesture recognizers is changed.
void
_updateGestureRecognizersWithCallBack
(
Set
<
Factory
<
OneSequenceGestureRecognizer
>>
gestureRecognizers
,
_HandlePointerEvent
_handlePointerEvent
)
{
assert
(
gestureRecognizers
!=
null
);
assert
(
_factoriesTypeSet
(
gestureRecognizers
).
length
==
gestureRecognizers
.
length
,
'There were multiple gesture recognizer factories for the same type, there must only be a single '
'gesture recognizer factory for each gesture recognizer type.'
,);
if
(
_factoryTypesSetEquals
(
gestureRecognizers
,
_gestureRecognizer
?.
gestureRecognizerFactories
))
{
return
;
}
_gestureRecognizer
?.
dispose
();
_gestureRecognizer
=
_PlatformViewGestureRecognizer
(
_handlePointerEvent
,
gestureRecognizers
);
}
_PlatformViewGestureRecognizer
_gestureRecognizer
;
@override
bool
hitTest
(
BoxHitTestResult
result
,
{
Offset
position
})
{
if
(
hitTestBehavior
==
PlatformViewHitTestBehavior
.
transparent
||
!
size
.
contains
(
position
))
{
return
false
;
}
result
.
add
(
BoxHitTestEntry
(
this
,
position
));
return
hitTestBehavior
==
PlatformViewHitTestBehavior
.
opaque
;
}
@override
bool
hitTestSelf
(
Offset
position
)
=>
hitTestBehavior
!=
PlatformViewHitTestBehavior
.
transparent
;
@override
void
handleEvent
(
PointerEvent
event
,
HitTestEntry
entry
)
{
if
(
event
is
PointerDownEvent
)
{
_gestureRecognizer
.
addPointer
(
event
);
}
}
@override
void
detach
()
{
_gestureRecognizer
.
reset
();
super
.
detach
();
}
}
packages/flutter/lib/src/services/platform_views.dart
View file @
333c9618
...
...
@@ -7,6 +7,7 @@ import 'dart:typed_data';
import
'dart:ui'
;
import
'package:flutter/foundation.dart'
;
import
'package:flutter/gestures.dart'
;
import
'message_codec.dart'
;
import
'system_channels.dart'
;
...
...
@@ -725,4 +726,7 @@ abstract class PlatformViewController {
///
/// See also [PlatformViewRegistry] which is a helper for managing platform view ids.
int
get
viewId
;
/// Dispatches the `event` to the platform view.
void
dispatchPointerEvent
(
PointerEvent
event
);
}
packages/flutter/lib/src/widgets/platform_view.dart
View file @
333c9618
...
...
@@ -603,7 +603,11 @@ class PlatformViewSurface extends LeafRenderObjectWidget {
/// The [controller] must not be null.
const
PlatformViewSurface
({
@required
this
.
controller
,
})
:
assert
(
controller
!=
null
);
@required
this
.
hitTestBehavior
,
@required
this
.
gestureRecognizers
,
})
:
assert
(
controller
!=
null
),
assert
(
hitTestBehavior
!=
null
),
assert
(
gestureRecognizers
!=
null
);
/// The controller for the platform view integrated by this [PlatformViewSurface].
///
...
...
@@ -611,14 +615,60 @@ class PlatformViewSurface extends LeafRenderObjectWidget {
/// [PlatformViewController.viewId] identifies the platform view whose contents are painted by this widget.
final
PlatformViewController
controller
;
/// Which gestures should be forwarded to the PlatformView.
///
/// {@macro flutter.widgets.platformViews.gestureRecognizersDescHead}
///
/// For example, with the following setup vertical drags will not be dispatched to the platform view
/// as the vertical drag gesture is claimed by the parent [GestureDetector].
///
/// ```dart
/// GestureDetector(
/// onVerticalDragStart: (DragStartDetails details) {},
/// child: PlatformViewSurface(
/// ),
/// )
/// ```
///
/// To get the [PlatformViewSurface] to claim the vertical drag gestures we can pass a vertical drag
/// gesture recognizer factory in [gestureRecognizers] e.g:
///
/// ```dart
/// GestureDetector(
/// onVerticalDragStart: (DragStartDetails details) {},
/// child: SizedBox(
/// width: 200.0,
/// height: 100.0,
/// child: PlatformViewSurface(
/// gestureRecognizers: <Factory<OneSequenceGestureRecognizer>>[
/// new Factory<OneSequenceGestureRecognizer>(
/// () => new EagerGestureRecognizer(),
/// ),
/// ].toSet(),
/// ),
/// ),
/// )
/// ```
///
/// {@macro flutter.widgets.platformViews.gestureRecognizersDescFoot}
// We use OneSequenceGestureRecognizers as they support gesture arena teams.
// TODO(amirh): get a list of GestureRecognizers here.
// https://github.com/flutter/flutter/issues/20953
final
Set
<
Factory
<
OneSequenceGestureRecognizer
>>
gestureRecognizers
;
/// {@macro flutter.widgets.platformViews.hittestParam}
final
PlatformViewHitTestBehavior
hitTestBehavior
;
@override
RenderObject
createRenderObject
(
BuildContext
context
)
{
return
PlatformViewRenderBox
(
controller:
controller
);
return
PlatformViewRenderBox
(
controller:
controller
,
gestureRecognizers:
gestureRecognizers
,
hitTestBehavior:
hitTestBehavior
);
}
@override
void
updateRenderObject
(
BuildContext
context
,
PlatformViewRenderBox
renderObject
)
{
renderObject
..
controller
=
controller
;
..
controller
=
controller
..
hitTestBehavior
=
hitTestBehavior
..
updateGestureRecognizers
(
gestureRecognizers
);
}
}
packages/flutter/test/rendering/platform_view_test.dart
View file @
333c9618
...
...
@@ -2,6 +2,8 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import
'package:flutter/foundation.dart'
;
import
'package:flutter/gestures.dart'
;
import
'package:flutter/rendering.dart'
;
import
'package:flutter_test/flutter_test.dart'
;
import
'package:flutter/material.dart'
;
...
...
@@ -15,7 +17,16 @@ void main() {
PlatformViewRenderBox
platformViewRenderBox
;
setUp
((){
fakePlatformViewController
=
FakePlatformViewController
(
0
);
platformViewRenderBox
=
PlatformViewRenderBox
(
controller:
fakePlatformViewController
);
platformViewRenderBox
=
PlatformViewRenderBox
(
controller:
fakePlatformViewController
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
<
Factory
<
OneSequenceGestureRecognizer
>>{
Factory
<
VerticalDragGestureRecognizer
>(
()
{
return
VerticalDragGestureRecognizer
();
},
),
},);
});
test
(
'layout should size to max constraint'
,
()
{
...
...
packages/flutter/test/services/fake_platform_views.dart
View file @
333c9618
...
...
@@ -8,6 +8,7 @@ import 'package:collection/collection.dart';
import
'package:flutter/painting.dart'
;
import
'package:flutter/services.dart'
;
import
'package:flutter/widgets.dart'
;
/// Used in internal testing.
class
FakePlatformViewController
extends
PlatformViewController
{
...
...
@@ -16,10 +17,22 @@ class FakePlatformViewController extends PlatformViewController {
_id
=
id
;
}
/// Events that are dispatched;
List
<
PointerEvent
>
dispatchedPointerEvents
=
<
PointerEvent
>[];
int
_id
;
@override
int
get
viewId
=>
_id
;
@override
void
dispatchPointerEvent
(
PointerEvent
event
)
{
dispatchedPointerEvents
.
add
(
event
);
}
void
clearTestingVariables
()
{
dispatchedPointerEvents
.
clear
();
}
}
class
FakeAndroidPlatformViewsController
{
...
...
packages/flutter/test/widgets/platform_view_test.dart
View file @
333c9618
...
...
@@ -1676,12 +1676,261 @@ void main() {
});
testWidgets
(
'PlatformViewSurface should create platform view layer'
,
(
WidgetTester
tester
)
async
{
final
PlatformViewSurface
surface
=
PlatformViewSurface
(
controller:
controller
);
final
PlatformViewSurface
surface
=
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
const
<
Factory
<
OneSequenceGestureRecognizer
>>{},);
await
tester
.
pumpWidget
(
surface
);
final
PlatformViewLayer
layer
=
tester
.
layers
.
firstWhere
((
Layer
layer
){
return
layer
is
PlatformViewLayer
;
});
expect
(
layer
,
isNotNull
);
});
testWidgets
(
'PlatformViewSurface can lose gesture arenas'
,
(
WidgetTester
tester
)
async
{
bool
verticalDragAcceptedByParent
=
false
;
await
tester
.
pumpWidget
(
Align
(
alignment:
Alignment
.
topLeft
,
child:
Container
(
margin:
const
EdgeInsets
.
all
(
10.0
),
child:
GestureDetector
(
onVerticalDragStart:
(
DragStartDetails
d
)
{
verticalDragAcceptedByParent
=
true
;
},
child:
SizedBox
(
width:
200.0
,
height:
100.0
,
child:
PlatformViewSurface
(
controller:
controller
,
gestureRecognizers:
const
<
Factory
<
OneSequenceGestureRecognizer
>>{},
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
),
),
),
),
),
);
final
TestGesture
gesture
=
await
tester
.
startGesture
(
const
Offset
(
50.0
,
50.0
));
await
gesture
.
moveBy
(
const
Offset
(
0.0
,
100.0
));
await
gesture
.
up
();
expect
(
verticalDragAcceptedByParent
,
true
);
expect
(
controller
.
dispatchedPointerEvents
,
isEmpty
,
);
});
testWidgets
(
'PlatformViewSurface gesture recognizers dispatch events'
,
(
WidgetTester
tester
)
async
{
bool
verticalDragAcceptedByParent
=
false
;
await
tester
.
pumpWidget
(
Align
(
alignment:
Alignment
.
topLeft
,
child:
GestureDetector
(
onVerticalDragStart:
(
DragStartDetails
d
)
{
verticalDragAcceptedByParent
=
true
;
},
child:
SizedBox
(
width:
200.0
,
height:
100.0
,
child:
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
<
Factory
<
OneSequenceGestureRecognizer
>>{
Factory
<
VerticalDragGestureRecognizer
>(
()
{
return
VerticalDragGestureRecognizer
()
..
onStart
=
(
_
)
{};
// Add callback to enable recognizer
},
),
},
),
),
),
),
);
final
TestGesture
gesture
=
await
tester
.
startGesture
(
const
Offset
(
50.0
,
50.0
));
await
gesture
.
moveBy
(
const
Offset
(
0.0
,
100.0
));
await
gesture
.
up
();
expect
(
verticalDragAcceptedByParent
,
false
);
expect
(
controller
.
dispatchedPointerEvents
.
length
,
3
,
);
});
testWidgets
(
'PlatformViewSurface can claim gesture after all pointers are up'
,
(
WidgetTester
tester
)
async
{
bool
verticalDragAcceptedByParent
=
false
;
// The long press recognizer rejects the gesture after the PlatformViewSurface gets the pointer up event.
// This test makes sure that the PlatformViewSurface can win the gesture after it got the pointer up event.
await
tester
.
pumpWidget
(
Align
(
alignment:
Alignment
.
topLeft
,
child:
GestureDetector
(
onVerticalDragStart:
(
DragStartDetails
d
)
{
verticalDragAcceptedByParent
=
true
;
},
onLongPress:
()
{
},
child:
SizedBox
(
width:
200.0
,
height:
100.0
,
child:
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
const
<
Factory
<
OneSequenceGestureRecognizer
>>{},
),
),
),
),
);
final
TestGesture
gesture
=
await
tester
.
startGesture
(
const
Offset
(
50.0
,
50.0
));
await
gesture
.
up
();
expect
(
verticalDragAcceptedByParent
,
false
);
expect
(
controller
.
dispatchedPointerEvents
.
length
,
2
,
);
});
testWidgets
(
'PlatformViewSurface rebuilt during gesture'
,
(
WidgetTester
tester
)
async
{
await
tester
.
pumpWidget
(
Align
(
alignment:
Alignment
.
topLeft
,
child:
SizedBox
(
width:
200.0
,
height:
100.0
,
child:
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
const
<
Factory
<
OneSequenceGestureRecognizer
>>{},
),
),
),
);
final
TestGesture
gesture
=
await
tester
.
startGesture
(
const
Offset
(
50.0
,
50.0
));
await
gesture
.
moveBy
(
const
Offset
(
0.0
,
100.0
));
await
tester
.
pumpWidget
(
Align
(
alignment:
Alignment
.
topLeft
,
child:
SizedBox
(
width:
200.0
,
height:
100.0
,
child:
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
const
<
Factory
<
OneSequenceGestureRecognizer
>>{},
),
),
),
);
await
gesture
.
up
();
expect
(
controller
.
dispatchedPointerEvents
.
length
,
3
,
);
});
testWidgets
(
'PlatformViewSurface with eager gesture recognizer'
,
(
WidgetTester
tester
)
async
{
await
tester
.
pumpWidget
(
Align
(
alignment:
Alignment
.
topLeft
,
child:
GestureDetector
(
onVerticalDragStart:
(
DragStartDetails
d
)
{
},
child:
SizedBox
(
width:
200.0
,
height:
100.0
,
child:
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
<
Factory
<
OneSequenceGestureRecognizer
>>{
Factory
<
OneSequenceGestureRecognizer
>(
()
=>
EagerGestureRecognizer
(),
),
},
),
),
),
),
);
await
tester
.
startGesture
(
const
Offset
(
50.0
,
50.0
));
// Normally (without the eager gesture recognizer) after just the pointer down event
// no gesture arena member will claim the arena (so no motion events will be dispatched to
// the PlatformViewSurface). Here we assert that with the eager recognizer in the gesture team the
// pointer down event is immediately dispatched.
expect
(
controller
.
dispatchedPointerEvents
.
length
,
1
,
);
});
testWidgets
(
'PlatformViewRenderBox reconstructed with same gestureRecognizers'
,
(
WidgetTester
tester
)
async
{
int
factoryInvocationCount
=
0
;
final
ValueGetter
<
EagerGestureRecognizer
>
constructRecognizer
=
()
{
++
factoryInvocationCount
;
return
EagerGestureRecognizer
();
};
final
PlatformViewSurface
platformViewSurface
=
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
<
Factory
<
OneSequenceGestureRecognizer
>>{
Factory
<
OneSequenceGestureRecognizer
>(
constructRecognizer
,
),
});
await
tester
.
pumpWidget
(
platformViewSurface
);
await
tester
.
pumpWidget
(
const
SizedBox
.
shrink
());
await
tester
.
pumpWidget
(
platformViewSurface
);
expect
(
factoryInvocationCount
,
2
);
});
testWidgets
(
'PlatformViewSurface rebuilt with same gestureRecognizers'
,
(
WidgetTester
tester
)
async
{
int
factoryInvocationCount
=
0
;
final
ValueGetter
<
EagerGestureRecognizer
>
constructRecognizer
=
()
{
++
factoryInvocationCount
;
return
EagerGestureRecognizer
();
};
await
tester
.
pumpWidget
(
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
<
Factory
<
OneSequenceGestureRecognizer
>>{
Factory
<
OneSequenceGestureRecognizer
>(
constructRecognizer
,
),
})
);
await
tester
.
pumpWidget
(
PlatformViewSurface
(
controller:
controller
,
hitTestBehavior:
PlatformViewHitTestBehavior
.
opaque
,
gestureRecognizers:
<
Factory
<
OneSequenceGestureRecognizer
>>{
Factory
<
OneSequenceGestureRecognizer
>(
constructRecognizer
,
),
})
);
expect
(
factoryInvocationCount
,
1
);
});
});
}
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