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Truncates the incoming text untill it fits into maxWidth
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| // Truncates the incoming text untill it fits into maxWidth | |
| // Based on binary-search, hence only log(N) iterations | |
| // | |
| const findMaxFittingText = (context: CanvasRenderingContext2D, text: string, maxWidth: number): string => { | |
| let l: number = 0 | |
| let r: number = text.length | |
| while (l < r) { | |
| const mid: number = (r + l) >> 1 | |
| const testString = text.substring(0, mid + 1) | |
| if (Math.ceil(context.measureText(testString).width) <= maxWidth) { | |
| l = mid + 1 | |
| } else { | |
| r = mid | |
| } | |
| } | |
| return text.substring(0, l) | |
| } |
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