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August 29, 2015 14:10
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CATextLayerの上下中央揃え ref: http://qiita.com/morizotter/items/1a89bc60ba870a51d251
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| // とりあえず、fontと表示したいテキストを用意 | |
| let font = UIFont.systemFontOfSize(20.0) | |
| let text = "T" | |
| // 上記で用意したfontを利用した場合のテキストのサイズを取得 | |
| var attributes = [NSObject: AnyObject]() | |
| attributes[NSFontAttributeName] = font | |
| let size = text.sizeWithAttributes(attributes) | |
| // テキストのサイズから表示するframeを作成 | |
| let x = CGRectGetMinX(bodyRect) + (CGRectGetWidth(bodyRect) - size.width) / 2 | |
| let y = CGRectGetMinY(bodyRect) + (CGRectGetHeight(bodyRect) - size.height) / 2 | |
| let height = size.height | |
| let width = size.width | |
| let frame = CGRectMake(x, y, width, height) | |
| // CATextLayerを作っていきます。 | |
| let textLayer = CATextLayer() | |
| textLayer.string = text | |
| textLayer.font = font | |
| // 解説1 | |
| textLayer.fontSize = font.pointSize | |
| textLayer.foregroundColor = UIColor.whiteColor().CGColor | |
| textLayer.frame = frame | |
| // 左右中央揃えです | |
| textLayer.alignmentMode = kCAAlignmentCenter | |
| // スケールの調整 | |
| textLayer.contentsScale = UIScreen.mainScreen().scale | |
| shapeLayer.addSublayer(textLayer) | |
| return shapeLayer |
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