//
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// MWCaptionView.m
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// MWPhotoBrowser
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//
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// Created by Michael Waterfall on 30/12/2011.
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// Copyright (c) 2011 __MyCompanyName__. All rights reserved.
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//
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#import "MWCommon.h"
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#import "MWCaptionView.h"
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#import "MWPhoto.h"
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static const CGFloat labelPadding = 10;
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// Private
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@interface MWCaptionView () {
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id <MWPhoto> _photo;
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UILabel *_label;
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}
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@end
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@implementation MWCaptionView
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- (id)initWithPhoto:(id<MWPhoto>)photo {
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self = [super initWithFrame:CGRectMake(0, 0, 320, 44)]; // Random initial frame
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if (self) {
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self.userInteractionEnabled = NO;
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_photo = photo;
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self.barStyle = UIBarStyleBlackTranslucent;
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self.tintColor = nil;
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self.barTintColor = nil;
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self.barStyle = UIBarStyleBlackTranslucent;
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[self setBackgroundImage:nil forToolbarPosition:UIBarPositionAny barMetrics:UIBarMetricsDefault];
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self.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin;
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[self setupCaption];
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}
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return self;
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}
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- (CGSize)sizeThatFits:(CGSize)size {
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CGFloat maxHeight = 9999;
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if (_label.numberOfLines > 0) maxHeight = _label.font.leading*_label.numberOfLines;
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CGSize textSize = [_label.text boundingRectWithSize:CGSizeMake(size.width - labelPadding*2, maxHeight)
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options:NSStringDrawingUsesLineFragmentOrigin
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attributes:@{NSFontAttributeName:_label.font}
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context:nil].size;
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return CGSizeMake(size.width, textSize.height + labelPadding * 2);
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}
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- (void)setupCaption {
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_label = [[UILabel alloc] initWithFrame:CGRectIntegral(CGRectMake(labelPadding, 0,
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self.bounds.size.width-labelPadding*2,
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self.bounds.size.height))];
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_label.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
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_label.opaque = NO;
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_label.backgroundColor = [UIColor clearColor];
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_label.textAlignment = NSTextAlignmentCenter;
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_label.lineBreakMode = NSLineBreakByWordWrapping;
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_label.numberOfLines = 0;
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_label.textColor = [UIColor whiteColor];
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_label.font = [UIFont systemFontOfSize:17];
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if ([_photo respondsToSelector:@selector(caption)]) {
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_label.text = [_photo caption] ? [_photo caption] : @" ";
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}
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[self addSubview:_label];
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}
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@end
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