José Almeida
35 lines
1.0 KiB
TypeScript
35 lines
1.0 KiB
TypeScript
export const MIN_MARKDOWN_COLUMN_WIDTH = 64;
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export function canResizeColumnBoundary(widths: readonly number[], boundaryIndex: number): boolean {
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const left = widths[boundaryIndex];
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const right = widths[boundaryIndex + 1];
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return (
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left !== undefined &&
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right !== undefined &&
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left >= MIN_MARKDOWN_COLUMN_WIDTH &&
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right >= MIN_MARKDOWN_COLUMN_WIDTH
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);
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}
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export function resizeAdjacentColumns(
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widths: readonly number[],
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boundaryIndex: number,
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delta: number,
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): number[] {
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const resized = [...widths];
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const left = resized[boundaryIndex];
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const right = resized[boundaryIndex + 1];
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if (left === undefined || right === undefined) return resized;
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const pairWidth = left + right;
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if (pairWidth < MIN_MARKDOWN_COLUMN_WIDTH * 2) return resized;
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const nextLeft = Math.min(
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Math.max(left + delta, MIN_MARKDOWN_COLUMN_WIDTH),
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pairWidth - MIN_MARKDOWN_COLUMN_WIDTH,
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);
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resized[boundaryIndex] = nextLeft;
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resized[boundaryIndex + 1] = pairWidth - nextLeft;
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return resized;
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}
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