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c31dc589
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c31dc589
编写于
12月 08, 2020
作者:
Y
Yegor
提交者:
GitHub
12月 08, 2020
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差异文件
[canvaskit] fix TransformLayer.preroll (#22890)
上级
9af38d36
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
71 addition
and
37 deletion
+71
-37
lib/web_ui/lib/src/engine/canvaskit/layer.dart
lib/web_ui/lib/src/engine/canvaskit/layer.dart
+6
-37
lib/web_ui/test/canvaskit/common.dart
lib/web_ui/test/canvaskit/common.dart
+10
-0
lib/web_ui/test/canvaskit/layer_test.dart
lib/web_ui/test/canvaskit/layer_test.dart
+55
-0
未找到文件。
lib/web_ui/lib/src/engine/canvaskit/layer.dart
浏览文件 @
c31dc589
...
...
@@ -71,6 +71,11 @@ class PaintContext {
abstract
class
ContainerLayer
extends
Layer
{
final
List
<
Layer
>
_layers
=
<
Layer
>[];
/// The list of child layers.
///
/// Useful in tests.
List
<
Layer
>
get
debugLayers
=>
_layers
;
/// Register [child] as a child of this layer.
void
add
(
Layer
child
)
{
child
.
parent
=
this
;
...
...
@@ -294,46 +299,10 @@ class TransformLayer extends ContainerLayer
final
Matrix4
childMatrix
=
matrix
*
_transform
;
context
.
mutatorsStack
.
pushTransform
(
_transform
);
final
ui
.
Rect
childPaintBounds
=
prerollChildren
(
context
,
childMatrix
);
paintBounds
=
_
transformRect
(
_transform
,
childPaintBounds
);
paintBounds
=
transformRect
(
_transform
,
childPaintBounds
);
context
.
mutatorsStack
.
pop
();
}
/// Applies the given matrix as a perspective transform to the given point.
///
/// This function assumes the given point has a z-coordinate of 0.0. The
/// z-coordinate of the result is ignored.
static
ui
.
Offset
_transformPoint
(
Matrix4
transform
,
ui
.
Offset
point
)
{
final
Vector3
position3
=
Vector3
(
point
.
dx
,
point
.
dy
,
0.0
);
final
Vector3
transformed3
=
transform
.
perspectiveTransform
(
position3
);
return
ui
.
Offset
(
transformed3
.
x
,
transformed3
.
y
);
}
/// Returns a rect that bounds the result of applying the given matrix as a
/// perspective transform to the given rect.
///
/// This function assumes the given rect is in the plane with z equals 0.0.
/// The transformed rect is then projected back into the plane with z equals
/// 0.0 before computing its bounding rect.
static
ui
.
Rect
_transformRect
(
Matrix4
transform
,
ui
.
Rect
rect
)
{
final
ui
.
Offset
point1
=
_transformPoint
(
transform
,
rect
.
topLeft
);
final
ui
.
Offset
point2
=
_transformPoint
(
transform
,
rect
.
topRight
);
final
ui
.
Offset
point3
=
_transformPoint
(
transform
,
rect
.
bottomLeft
);
final
ui
.
Offset
point4
=
_transformPoint
(
transform
,
rect
.
bottomRight
);
return
ui
.
Rect
.
fromLTRB
(
_min4
(
point1
.
dx
,
point2
.
dx
,
point3
.
dx
,
point4
.
dx
),
_min4
(
point1
.
dy
,
point2
.
dy
,
point3
.
dy
,
point4
.
dy
),
_max4
(
point1
.
dx
,
point2
.
dx
,
point3
.
dx
,
point4
.
dx
),
_max4
(
point1
.
dy
,
point2
.
dy
,
point3
.
dy
,
point4
.
dy
));
}
static
double
_min4
(
double
a
,
double
b
,
double
c
,
double
d
)
{
return
math
.
min
(
a
,
math
.
min
(
b
,
math
.
min
(
c
,
d
)));
}
static
double
_max4
(
double
a
,
double
b
,
double
c
,
double
d
)
{
return
math
.
max
(
a
,
math
.
max
(
b
,
math
.
max
(
c
,
d
)));
}
@override
void
paint
(
PaintContext
paintContext
)
{
assert
(
needsPainting
);
...
...
lib/web_ui/test/canvaskit/common.dart
浏览文件 @
c31dc589
...
...
@@ -45,6 +45,16 @@ void setUpCanvasKitTest() {
});
}
/// Utility function for CanvasKit tests to draw pictures without
/// the [CkPictureRecorder] boilerplate.
CkPicture
paintPicture
(
ui
.
Rect
cullRect
,
void
Function
(
CkCanvas
canvas
)
painter
)
{
final
CkPictureRecorder
recorder
=
CkPictureRecorder
();
final
CkCanvas
canvas
=
recorder
.
beginRecording
(
cullRect
);
painter
(
canvas
);
return
recorder
.
endRecording
();
}
class
_TestFinalizerRegistration
{
_TestFinalizerRegistration
(
this
.
wrapper
,
this
.
deletable
,
this
.
stackTrace
);
...
...
lib/web_ui/test/canvaskit/layer_test.dart
0 → 100644
浏览文件 @
c31dc589
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// @dart = 2.12
import
'dart:typed_data'
;
import
'package:test/bootstrap/browser.dart'
;
import
'package:test/test.dart'
;
import
'package:ui/src/engine.dart'
;
import
'package:ui/ui.dart'
as
ui
;
import
'common.dart'
;
void
main
(
)
{
internalBootstrapBrowserTest
(()
=>
testMain
);
}
void
testMain
(
)
{
group
(
'CanvasKit'
,
()
{
setUpCanvasKitTest
();
// Regression test for https://github.com/flutter/flutter/issues/63715
test
(
'TransformLayer prerolls correctly'
,
()
async
{
final
EnginePlatformDispatcher
dispatcher
=
ui
.
window
.
platformDispatcher
as
EnginePlatformDispatcher
;
final
CkPicture
picture
=
paintPicture
(
ui
.
Rect
.
fromLTRB
(
0
,
0
,
30
,
30
),
(
CkCanvas
canvas
)
{
canvas
.
drawRect
(
ui
.
Rect
.
fromLTRB
(
0
,
0
,
30
,
30
),
CkPaint
()..
style
=
ui
.
PaintingStyle
.
fill
);
});
final
LayerSceneBuilder
sb
=
LayerSceneBuilder
();
sb
.
pushClipRect
(
ui
.
Rect
.
fromLTRB
(
15
,
15
,
30
,
30
));
// Intentionally use a perspective transform, which triggered the
// https://github.com/flutter/flutter/issues/63715 bug.
sb
.
pushTransform
(
Float64List
.
fromList
(
Matrix4
.
identity
().
storage
..[
15
]
=
2
,
));
sb
.
addPicture
(
ui
.
Offset
.
zero
,
picture
);
final
LayerTree
layerTree
=
sb
.
build
().
layerTree
;
dispatcher
.
rasterizer
!.
draw
(
layerTree
);
final
ClipRectLayer
clipRect
=
layerTree
.
rootLayer
as
ClipRectLayer
;
expect
(
clipRect
.
paintBounds
,
ui
.
Rect
.
fromLTRB
(
15
,
15
,
30
,
30
));
final
TransformLayer
transform
=
clipRect
.
debugLayers
.
single
as
TransformLayer
;
expect
(
transform
.
paintBounds
,
ui
.
Rect
.
fromLTRB
(
0
,
0
,
30
,
30
));
});
// TODO: https://github.com/flutter/flutter/issues/60040
},
skip:
isIosSafari
);
}
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