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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| export const ELLIPSIS = '...'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| import { SkFont } from '@shopify/react-native-skia'; | ||
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| import { ELLIPSIS } from '../constants'; | ||
| import { TextLineData } from '../types'; | ||
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| export const trimLineStart = ( | ||
| line: TextLineData, | ||
| font: SkFont, | ||
| width: number, | ||
| prefix = ELLIPSIS | ||
| ): TextLineData => { | ||
| // If the line is too short, return it as is | ||
| if (line.width <= width) { | ||
| return line; | ||
| } | ||
|
|
||
| // Go from the first char and find how many chars must be sliced to | ||
| // display ellipsis at the beginning | ||
| let firstIndex = 0; | ||
| let lineWidth = font.getTextWidth(line.text) + font.getTextWidth(prefix); | ||
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| while (lineWidth > width && firstIndex < line.text.length) { | ||
| lineWidth -= font.getTextWidth(line.text[firstIndex]!); | ||
| firstIndex++; | ||
| } | ||
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| return { | ||
| text: `${prefix}${line.text.slice(firstIndex).trimStart()}`, | ||
| width: lineWidth | ||
| }; | ||
| }; | ||
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| export const trimLineEnd = ( | ||
| line: TextLineData, | ||
| font: SkFont, | ||
| width: number, | ||
| suffix = ELLIPSIS | ||
| ): TextLineData => { | ||
| // If the line is too short, return it as is | ||
| if (line.width <= width) { | ||
| return line; | ||
| } | ||
|
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| // Go from the last char and find how many chars must be sliced to | ||
| // display ellipsis at the end or clip the end of the line | ||
| let lastIndex = line.text.length - 1; | ||
| let lineWidth = font.getTextWidth(line.text) + font.getTextWidth(suffix); | ||
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| while (lineWidth > width && lastIndex >= 0) { | ||
| lineWidth -= font.getTextWidth(line.text[lastIndex]!); | ||
| lastIndex--; | ||
| } | ||
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| return { | ||
| text: `${line.text.slice(0, lastIndex + 1).trimEnd()}${suffix}`, | ||
| width: lineWidth | ||
| }; | ||
| }; | ||
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| export const trimLineCenter = ( | ||
| line: TextLineData, | ||
| font: SkFont, | ||
| width: number, | ||
| infix = ELLIPSIS | ||
| ): TextLineData => { | ||
| // If the line is too short, return it as is | ||
| if (line.width <= width) { | ||
| return line; | ||
| } | ||
|
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| // Get first half of the line in terms of width | ||
| let firstHalfWidth = 0; | ||
| let firstHalfIndex = 0; | ||
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| while (firstHalfWidth < line.width / 2) { | ||
| firstHalfWidth += font.getTextWidth(line.text[firstHalfIndex]!); | ||
| firstHalfIndex++; | ||
| } | ||
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| // Get second half of the line in terms of width | ||
| let secondHalfWidth = 0; | ||
| let secondHalfIndex = line.text.length - 1; | ||
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| while (secondHalfWidth < line.width / 2) { | ||
| secondHalfWidth += font.getTextWidth(line.text[secondHalfIndex]!); | ||
| secondHalfIndex--; | ||
| } | ||
|
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| // Remove chars from the end of the first half and from the start of the second half | ||
| // until the line width with infix is less than or equal to the width | ||
| let lineWidth = firstHalfWidth + secondHalfWidth + font.getTextWidth(infix); | ||
| while (lineWidth > width) { | ||
| if (firstHalfWidth > secondHalfWidth) { | ||
| firstHalfWidth -= font.getTextWidth(line.text[--firstHalfIndex]!); | ||
| } else { | ||
| secondHalfWidth -= font.getTextWidth(line.text[++secondHalfIndex]!); | ||
| } | ||
| lineWidth = firstHalfWidth + secondHalfWidth + font.getTextWidth(infix); | ||
| } | ||
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| return { | ||
| text: `${line.text.slice(0, firstHalfIndex).trimEnd()}${infix}${line.text | ||
| .slice(secondHalfIndex) | ||
| .trimStart()}`, | ||
| width: lineWidth | ||
| }; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,5 @@ | ||
| export * from './alignment'; | ||
| export * from './ellipsize'; | ||
| export * from './reanimated'; | ||
| export * from './text'; | ||
| export * from './wrapping'; |
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