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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| // | ||
| // Method to normalize size of fonts across devices | ||
| // | ||
| // Some code taken from https://jsfiddle.net/97ty7yjk/ & | ||
| // https://stackoverflow.com/questions/34837342/font-size-on-iphone-6s-plus | ||
| // | ||
| // author: @xiaoneng | ||
| // date: 14/10/2016 | ||
| // version: 03 | ||
| // | ||
|
|
||
| const React = require('react-native'); | ||
| const { | ||
| PixelRatio, | ||
| Dimensions | ||
| } = React; | ||
|
|
||
| const pixelRatio = PixelRatio.get(); | ||
| const deviceHeight = Dimensions.get('window').height; | ||
| const deviceWidth = Dimensions.get('window').width; | ||
|
|
||
| // -- Testing Only -- | ||
| // const fontScale = PixelRatio.getFontScale(); | ||
| // const layoutSize = PixelRatio.getPixelSizeForLayoutSize(14); | ||
| // console.log('normalizeText getPR ->', pixelRatio); | ||
| // console.log('normalizeText getFS ->', fontScale); | ||
| // console.log('normalizeText getDH ->', deviceHeight); | ||
| // console.log('normalizeText getDW ->', deviceWidth); | ||
| // console.log('normalizeText getPSFLS ->', layoutSize); | ||
|
|
||
| const normalize = (size) => { | ||
| if (pixelRatio === 2) { | ||
| // iphone 5s and older Androids | ||
| if (deviceWidth < 360) { | ||
| return size * 0.95; | ||
| } | ||
| // iphone 5 | ||
| if (deviceHeight < 667) { | ||
| return size; | ||
| // iphone 6-6s | ||
| } else if (deviceHeight >= 667 && deviceHeight <= 735) { | ||
| return size * 1.15; | ||
| } | ||
| // older phablets | ||
| return size * 1.25; | ||
| } | ||
| if (pixelRatio === 3) { | ||
| // catch Android font scaling on small machines | ||
| // where pixel ratio / font scale ratio => 3:3 | ||
| if (deviceWidth <= 360) { | ||
| return size; | ||
| } | ||
| // Catch other weird android width sizings | ||
| if (deviceHeight < 667) { | ||
| return size * 1.15; | ||
| // catch in-between size Androids and scale font up | ||
| // a tad but not too much | ||
| } | ||
| if (deviceHeight >= 667 && deviceHeight <= 735) { | ||
| return size * 1.2; | ||
| } | ||
| // catch larger devices | ||
| // ie iphone 6s plus / 7 plus / mi note 等等 | ||
| return size * 1.27; | ||
| } | ||
| if (pixelRatio === 3.5) { | ||
| // catch Android font scaling on small machines | ||
| // where pixel ratio / font scale ratio => 3:3 | ||
| if (deviceWidth <= 360) { | ||
| return size; | ||
| // Catch other smaller android height sizings | ||
| } | ||
| if (deviceHeight < 667) { | ||
| return size * 1.20; | ||
| // catch in-between size Androids and scale font up | ||
| // a tad but not too much | ||
| } | ||
| if(deviceHeight >= 667 && deviceHeight <= 735) { | ||
| return size * 1.25; | ||
| } | ||
| // catch larger phablet devices | ||
| return size * 1.40; | ||
| } | ||
| // if older device ie pixelRatio !== 2 || 3 || 3.5 | ||
| return size; | ||
| } | ||
|
|
||
| module.exports = normalize; |
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