react-native-gesture-handler/lib/module/components/Pressable/utils.js

Declarative API exposing native platform touch and gesture system to React Native

"use strict";

const numberAsInset = value => ({
  left: value,
  right: value,
  top: value,
  bottom: value
});
const addInsets = (a, b) => ({
  left: (a.left ?? 0) + (b.left ?? 0),
  right: (a.right ?? 0) + (b.right ?? 0),
  top: (a.top ?? 0) + (b.top ?? 0),
  bottom: (a.bottom ?? 0) + (b.bottom ?? 0)
});
const touchDataToPressEvent = (data, timestamp, targetId) => ({
  identifier: data.id,
  locationX: data.x,
  locationY: data.y,
  pageX: data.absoluteX,
  pageY: data.absoluteY,
  target: targetId,
  timestamp: timestamp,
  touches: [],
  // Always empty - legacy compatibility
  changedTouches: [] // Always empty - legacy compatibility
});
const gestureToPressEvent = (event, timestamp, targetId) => ({
  identifier: event.handlerTag,
  locationX: event.x,
  locationY: event.y,
  pageX: event.absoluteX,
  pageY: event.absoluteY,
  target: targetId,
  timestamp: timestamp,
  touches: [],
  // Always empty - legacy compatibility
  changedTouches: [] // Always empty - legacy compatibility
});
const isTouchWithinInset = (dimensions, inset, touch) => (touch?.x ?? 0) < (inset.right ?? 0) + dimensions.width && (touch?.y ?? 0) < (inset.bottom ?? 0) + dimensions.height && (touch?.x ?? 0) > -(inset.left ?? 0) && (touch?.y ?? 0) > -(inset.top ?? 0);
const gestureToPressableEvent = event => {
  const timestamp = Date.now();

  // As far as I can see, there isn't a conventional way of getting targetId with the data we get
  const targetId = 0;
  const pressEvent = gestureToPressEvent(event, timestamp, targetId);
  return {
    nativeEvent: {
      touches: [pressEvent],
      changedTouches: [pressEvent],
      identifier: pressEvent.identifier,
      locationX: event.x,
      locationY: event.y,
      pageX: event.absoluteX,
      pageY: event.absoluteY,
      target: targetId,
      timestamp: timestamp,
      force: undefined
    }
  };
};
const gestureTouchToPressableEvent = event => {
  const timestamp = Date.now();

  // As far as I can see, there isn't a conventional way of getting targetId with the data we get
  const targetId = 0;
  const touchesList = event.allTouches.map(touch => touchDataToPressEvent(touch, timestamp, targetId));
  const changedTouchesList = event.changedTouches.map(touch => touchDataToPressEvent(touch, timestamp, targetId));
  return {
    nativeEvent: {
      touches: touchesList,
      changedTouches: changedTouchesList,
      identifier: event.handlerTag,
      locationX: event.allTouches.at(0)?.x ?? -1,
      locationY: event.allTouches.at(0)?.y ?? -1,
      pageX: event.allTouches.at(0)?.absoluteX ?? -1,
      pageY: event.allTouches.at(0)?.absoluteY ?? -1,
      target: targetId,
      timestamp: timestamp,
      force: undefined
    }
  };
};
export { numberAsInset, addInsets, isTouchWithinInset, gestureToPressableEvent, gestureTouchToPressableEvent };
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