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https://github.com/Swiftgram/Telegram-iOS.git
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a3e78d1cee
Most UITableViewCell properties aren't useful in conjunction with ASCellNode -- the system's UIView properties are unsupported for performance reasons, and properties that configure them (e.g., content indentation) don't affect custom node hierarchies. This patch adds support to _ASTableViewCell for the properties that *are* useful. r=scottg
113 lines
2.5 KiB
Objective-C
113 lines
2.5 KiB
Objective-C
/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "ASCellNode.h"
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#import "ASDisplayNode+Subclasses.h"
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#import "ASRangeControllerInternal.h"
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#import "ASTextNode.h"
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#pragma mark -
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#pragma mark ASCellNode
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@interface ASCellNode () {
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// used by ASRangeController machinery
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NSIndexPath *_asyncdisplaykit_indexPath;
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}
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@end
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@implementation ASCellNode
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- (instancetype)init
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{
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if (!(self = [super init]))
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return nil;
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// use UITableViewCell defaults
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_selectionStyle = UITableViewCellSelectionStyleDefault;
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return self;
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}
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// TODO consider making this property an associated object in ASRangeController.mm
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- (NSIndexPath *)asyncdisplaykit_indexPath
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{
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return _asyncdisplaykit_indexPath;
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}
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- (void)setAsyncdisplaykit_indexPath:(NSIndexPath *)asyncdisplaykit_indexPath
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{
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if (_asyncdisplaykit_indexPath == asyncdisplaykit_indexPath)
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return;
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_asyncdisplaykit_indexPath = [asyncdisplaykit_indexPath copy];
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}
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@end
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#pragma mark -
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#pragma mark ASTextCellNode
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@interface ASTextCellNode () {
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NSString *_text;
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ASTextNode *_textNode;
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}
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@end
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@implementation ASTextCellNode
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static const CGFloat kHorizontalPadding = 15.0f;
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static const CGFloat kVerticalPadding = 11.0f;
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static const CGFloat kFontSize = 18.0f;
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- (instancetype)init
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{
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if (!(self = [super init]))
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return nil;
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_textNode = [[ASTextNode alloc] init];
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[self addSubnode:_textNode];
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return self;
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}
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- (CGSize)calculateSizeThatFits:(CGSize)constrainedSize
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{
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CGSize availableSize = CGSizeMake(constrainedSize.width - 2 * kHorizontalPadding,
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constrainedSize.height - 2 * kVerticalPadding);
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CGSize textNodeSize = [_textNode measure:availableSize];
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return CGSizeMake(ceilf(2 * kHorizontalPadding + textNodeSize.width),
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ceilf(2 * kVerticalPadding + textNodeSize.height));
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}
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- (void)layout
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{
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_textNode.frame = CGRectInset(self.bounds, kHorizontalPadding, kVerticalPadding);
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}
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- (void)setText:(NSString *)text
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{
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if (_text == text)
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return;
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_text = [text copy];
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_textNode.attributedString = [[NSAttributedString alloc] initWithString:_text
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attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:kFontSize]}];
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[self invalidateCalculatedSize];
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}
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@end
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