Function distributeSizes

src/utils/calculations.ts:54–70

(
  currentSizes: number[],
  newContainerSize: number
)

 * Distribute sizes proportionally when container size changes
 */
export function distributeSizes(
  currentSizes: number[],
  newContainerSize: number
): number[] {
  const totalCurrentSize = currentSizes.reduce((sum, size) => sum + size, 0);

  if (totalCurrentSize === 0) {
    // Equal distribution
    const equalSize = newContainerSize / currentSizes.length;
    return currentSizes.map(() => equalSize);
  }

  // Proportional distribution
  return currentSizes.map(
    (size) => (size / totalCurrentSize) * newContainerSize
  );
}

/**
 * Calculate new sizes after a divider drag