react-native-sortables/dist/module/providers/shared/AutoScrollProvider/utils.js

Powerful Sortable Components for Flexible Content Reordering in React Native

"use strict";

const DEBUG_COLORS = {
  backgroundColor: '#CE00B5',
  borderColor: '#4E0044'
};
export const handleMeasurementsVertical = (threshold, maxOverScrollOffset, touchOffset, scrollableMeasurements, containerMeasurements, debugRects, debugLine) => {
  'worklet';

  const {
    height: sH,
    pageY: sY
  } = scrollableMeasurements;
  const {
    height: cH,
    pageY: cY
  } = containerMeasurements;
  maxOverScrollOffset ??= threshold;
  const startDistance = sY + maxOverScrollOffset[0] - cY;
  const endDistance = cY + cH - (sY + sH - maxOverScrollOffset[1]);
  const startOverflow = sY + threshold[0] - (cY + touchOffset);
  const endOverflow = cY + touchOffset - (sY + sH - threshold[1]);
  if (debugRects) {
    debugRects.start.set({
      ...DEBUG_COLORS,
      height: threshold[0],
      y: sY - cY
    });
    debugRects.end.set({
      ...DEBUG_COLORS,
      height: threshold[1],
      positionOrigin: 'bottom',
      y: sY - cY + sH
    });
  }
  if (debugLine) {
    debugLine.set({
      color: DEBUG_COLORS.backgroundColor,
      y: touchOffset
    });
  }
  return {
    containerPosition: cY,
    endDistance,
    endOverflow,
    startDistance,
    startOverflow
  };
};
export const handleMeasurementsHorizontal = (threshold, maxOverScrollOffset, touchOffset, scrollableMeasurements, containerMeasurements, debugRects, debugLine) => {
  'worklet';

  const {
    pageX: sX,
    width: sW
  } = scrollableMeasurements;
  const {
    pageX: cX,
    width: cW
  } = containerMeasurements;
  maxOverScrollOffset ??= threshold;
  const startDistance = sX + maxOverScrollOffset[0] - cX;
  const endDistance = cX + cW - (sX + sW - maxOverScrollOffset[1]);
  const startOverflow = sX + threshold[0] - (cX + touchOffset);
  const endOverflow = cX + touchOffset - (sX + sW - threshold[1]);
  if (debugRects) {
    debugRects.start.set({
      ...DEBUG_COLORS,
      width: threshold[0],
      x: sX - cX
    });
    debugRects.end.set({
      ...DEBUG_COLORS,
      positionOrigin: 'right',
      width: threshold[1],
      x: sX - cX + sW
    });
  }
  if (debugLine) {
    debugLine.set({
      color: DEBUG_COLORS.backgroundColor,
      x: touchOffset
    });
  }
  return {
    containerPosition: cX,
    endDistance,
    endOverflow,
    startDistance,
    startOverflow
  };
};
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