bteapot / BTLabel

UILabel subclass with vertical text alignment, insets, images and height calculation.

BTLabel

UILabel subclass with vertical text alignment, insets, images and height calculation.

Specifically designed to use with UITableView.

Usage

To run the example project, clone the repo, and run pod install from the Example directory first.

Examples

Simple initialization:

BTLabel *label = [[BTLabel alloc] initWithFrame:CGRectMake(10, 10, 300, 80) edgeInsets:UIEdgeInsetsMake(10, 20, 10, 10)];
label.font = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
label.verticalAlignment = BTVerticalAlignmentCenter;
label.textAlignment = NSTextAlignmentLeft;

Using within UITableViewCell:

// in interface
@property (nonatomic, strong) NSArray *texts;
@property (nonatomic, strong) UIFont *font;
@property (nonatomic, assign) UIEdgeInsets edgeInsets;

// in implementation
- (void)viewDidLoad
{
	[super viewDidLoad];
	
	self.texts = @[
		@"Text for row 0",
		@"Text for row 1",
		@"Text for row 2",
	];
	
	self.font = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
	self.edgeInsets = UIEdgeInsetsMake(10, 20, 10, 10);
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
	return [BTLabel heightForWidth:tableView.bounds.size.width
							  text:self.texts[indexPath.row]
							  font:self.font
						edgeInsets:self.edgeInsets
					 numberOfLines:0
						 imageSize:CGSizeZero
					 imagePosition:UIRectEdgeTop
				   imageEdgeInsets:UIEdgeInsetsZero] + 1;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
	static NSString * const kCellID = @"kCellID";
	UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellID];
	
	if (!cell) {
		cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellID];
		
		BTLabel *label = [[BTLabel alloc] initWithFrame:cell.bounds];
		label.tag = 100;
		label.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
		label.font				= self.font;
		label.textAlignment		= NSTextAlignmentLeft;
		label.verticalAlignment	= BTVerticalAlignmentTop;
		label.edgeInsets		= self.edgeInsets;
		label.hasImage			= NO;
		
		[cell.contentView addSubview:label];
	}
	
	BTLabel *label = [cell viewWithTag:100];
	label.text = self.texts[indexPath.row];
	
	return cell;
}

Installation

BTLabel is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "BTLabel"

Author

Денис Либит, [e-mail]

License

BTLabel is available under the MIT license. See the LICENSE file for more info.