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AsyncDisplayKit/AsyncDisplayKit/ASCellNode.m at master · clooth/AsyncDisplayKit · GitHub
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ASCellNode.m
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/*
Copyright (c) 2014-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#
import
"
ASCellNode.h
"
#
import
<
AsyncDisplayKit/_ASDisplayView.h
>
#
import
<
AsyncDisplayKit/ASDisplayNode+Subclasses.h
>
#
import
<
AsyncDisplayKit/ASTextNode.h
>
#
pragma mark
-
#
pragma mark
ASCellNode
@implementation
ASCellNode
- (
instancetype
)
init
{
if
(!(self = [
super
init
]))
return
nil
;
//
use UITableViewCell defaults
_selectionStyle = UITableViewCellSelectionStyleDefault;
return
self;
}
- (
instancetype
)
initWithLayerBlock
:
(ASDisplayNodeLayerBlock)
viewBlock
{
ASDisplayNodeAssertNotSupported
();
return
nil
;
}
- (
instancetype
)
initWithViewBlock
:
(ASDisplayNodeViewBlock)
viewBlock
{
ASDisplayNodeAssertNotSupported
();
return
nil
;
}
- (
void
)
setLayerBacked
:
(
BOOL
)
layerBacked
{
//
ASRangeController expects ASCellNodes to be view-backed. (Layer-backing is supported on ASCellNode subnodes.)
ASDisplayNodeAssert
(!layerBacked,
@"
ASCellNode does not support layer-backing.
"
);
}
- (
void
)
touchesBegan
:
(
NSSet
*)
touches
withEvent
:
(UIEvent *)
event
{
ASDisplayNodeAssertMainThread
();
ASDisplayNodeAssert
([
self
.view
isKindOfClass:
_ASDisplayView.class],
@"
ASCellNode views must be of type _ASDisplayView
"
);
[(_ASDisplayView *)
self
.view
__forwardTouchesBegan:
touches
withEvent:
event];
}
- (
void
)
touchesMoved
:
(
NSSet
*)
touches
withEvent
:
(UIEvent *)
event
{
ASDisplayNodeAssertMainThread
();
ASDisplayNodeAssert
([
self
.view
isKindOfClass:
_ASDisplayView.class],
@"
ASCellNode views must be of type _ASDisplayView
"
);
[(_ASDisplayView *)
self
.view
__forwardTouchesMoved:
touches
withEvent:
event];
}
- (
void
)
touchesEnded
:
(
NSSet
*)
touches
withEvent
:
(UIEvent *)
event
{
ASDisplayNodeAssertMainThread
();
ASDisplayNodeAssert
([
self
.view
isKindOfClass:
_ASDisplayView.class],
@"
ASCellNode views must be of type _ASDisplayView
"
);
[(_ASDisplayView *)
self
.view
__forwardTouchesEnded:
touches
withEvent:
event];
}
- (
void
)
touchesCancelled
:
(
NSSet
*)
touches
withEvent
:
(UIEvent *)
event
{
ASDisplayNodeAssertMainThread
();
ASDisplayNodeAssert
([
self
.view
isKindOfClass:
_ASDisplayView.class],
@"
ASCellNode views must be of type _ASDisplayView
"
);
[(_ASDisplayView *)
self
.view
__forwardTouchesCancelled:
touches
withEvent:
event];
}
@end
#
pragma mark
-
#
pragma mark
ASTextCellNode
@interface
ASTextCellNode
() {
NSString
*_text;
ASTextNode *_textNode;
}
@end
@implementation
ASTextCellNode
static
const
CGFloat
kHorizontalPadding
=
15
.
0f
;
static
const
CGFloat
kVerticalPadding
=
11
.
0f
;
static
const
CGFloat
kFontSize
=
18
.
0f
;
- (
instancetype
)
init
{
if
(!(self = [
super
init
]))
return
nil
;
_textNode = [[ASTextNode
alloc
]
init
];
[
self
addSubnode:
_textNode];
return
self;
}
- (CGSize)
calculateSizeThatFits
:
(CGSize)
constrainedSize
{
CGSize availableSize =
CGSizeMake
(constrainedSize.
width
-
2
*
kHorizontalPadding
,
constrainedSize.
height
-
2
*
kVerticalPadding
);
CGSize textNodeSize = [_textNode
measure:
availableSize];
return
CGSizeMake
(
ceilf
(
2
*
kHorizontalPadding
+ textNodeSize.
width
),
ceilf
(
2
*
kVerticalPadding
+ textNodeSize.
height
));
}
- (
void
)
layout
{
_textNode.
frame
=
CGRectInset
(self.
bounds
,
kHorizontalPadding
,
kVerticalPadding
);
}
- (
void
)
setText
:
(
NSString
*)
text
{
if
(_text == text)
return
;
_text = [text
copy
];
_textNode.
attributedString
= [[
NSAttributedString
alloc
]
initWithString:
_text
attributes:
@{
NSFontAttributeName
: [UIFont
systemFontOfSize:
kFontSize
]}];
[
self
invalidateCalculatedSize
];
}
@end
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