@wordpress/components/build-module/color-picker/hue-picker.native.js

UI components for WordPress.

/**
 * External dependencies
 */
import { Animated, View, PanResponder } from 'react-native';
import LinearGradient from 'react-native-linear-gradient';

/**
 * WordPress dependencies
 */
import React, { Component } from '@wordpress/element';

/**
 * Internal dependencies
 */
import styles from './style.scss';
import { jsx as _jsx, jsxs as _jsxs } from "react/jsx-runtime";
export default class HuePicker extends Component {
  constructor(props) {
    super(props);
    this.hueColors = ['#ff0000', '#ffff00', '#00ff00', '#00ffff', '#0000ff', '#ff00ff', '#ff0000'];
    this.sliderX = new Animated.Value(props.barHeight * props.hue / 360);
    this.panResponder = PanResponder.create({
      onStartShouldSetPanResponder: () => true,
      onStartShouldSetPanResponderCapture: () => true,
      onMoveShouldSetPanResponder: () => true,
      onMoveShouldSetPanResponderCapture: () => true,
      onPanResponderGrant: (evt, gestureState) => {
        const {
          onPress
        } = this.props;
        this.dragStartValue = this.computeHueValuePress(evt);
        if (onPress) {
          onPress({
            hue: this.computeHueValuePress(evt),
            nativeEvent: evt.nativeEvent
          });
        }
        this.fireDragEvent('onDragStart', gestureState);
      },
      onPanResponderMove: (evt, gestureState) => {
        this.fireDragEvent('onDragMove', gestureState);
      },
      onPanResponderTerminationRequest: () => true,
      onPanResponderRelease: (evt, gestureState) => {
        this.fireDragEvent('onDragEnd', gestureState);
      },
      onPanResponderTerminate: (evt, gestureState) => {
        this.fireDragEvent('onDragTerminate', gestureState);
      },
      onShouldBlockNativeResponder: () => true
    });
  }
  componentDidUpdate(prevProps) {
    const {
      hue = 0,
      barWidth = 200,
      sliderSize = 24
    } = this.props;
    const borderWidth = sliderSize / 10;
    if (prevProps.hue !== hue || prevProps.barWidth !== barWidth) {
      this.sliderX.setValue((barWidth - sliderSize + borderWidth) * hue / 360);
    }
  }
  normalizeValue(value) {
    if (value < 0) {
      return 0;
    }
    if (value > 1) {
      return 1;
    }
    return value;
  }
  getContainerStyle() {
    const {
      sliderSize = 24,
      barHeight = 12,
      containerStyle = {}
    } = this.props;
    const paddingLeft = sliderSize / 2;
    const paddingTop = sliderSize - barHeight > 0 ? (sliderSize - barHeight) / 2 : 0;
    return [styles['hsv-container'], containerStyle, {
      paddingTop,
      paddingBottom: paddingTop,
      paddingLeft,
      paddingRight: paddingLeft
    }];
  }
  computeHueValueDrag(gestureState) {
    const {
      dx
    } = gestureState;
    const {
      barWidth = 200
    } = this.props;
    const {
      dragStartValue
    } = this;
    const diff = dx / barWidth;
    const updatedHue = this.normalizeValue(dragStartValue / 360 + diff) * 360;
    return updatedHue;
  }
  computeHueValuePress(event) {
    const {
      nativeEvent
    } = event;
    const {
      locationX
    } = nativeEvent;
    const {
      barWidth = 200
    } = this.props;
    const updatedHue = this.normalizeValue(locationX / barWidth) * 360;
    return updatedHue;
  }
  fireDragEvent(eventName, gestureState) {
    const {
      [eventName]: event
    } = this.props;
    if (event) {
      event({
        hue: this.computeHueValueDrag(gestureState),
        gestureState
      });
    }
  }
  firePressEvent(event) {
    const {
      onPress
    } = this.props;
    if (onPress) {
      onPress({
        hue: this.computeHueValuePress(event),
        nativeEvent: event.nativeEvent
      });
    }
  }
  render() {
    const {
      hueColors
    } = this;
    const {
      sliderSize = 24,
      barWidth = 200,
      barHeight = 12,
      borderRadius = 0
    } = this.props;
    const borderWidth = sliderSize / 10;
    return /*#__PURE__*/_jsxs(View, {
      style: this.getContainerStyle(),
      ...this.panResponder.panHandlers,
      hitSlop: {
        top: 10,
        bottom: 10,
        left: 0,
        right: 0
      },
      children: [/*#__PURE__*/_jsx(LinearGradient, {
        colors: hueColors,
        style: {
          borderRadius
        },
        start: {
          x: 0,
          y: 0
        },
        end: {
          x: 1,
          y: 0
        },
        children: /*#__PURE__*/_jsx(View, {
          style: {
            width: barWidth,
            height: barHeight
          }
        })
      }), /*#__PURE__*/_jsx(Animated.View, {
        pointerEvents: "none",
        style: [styles['hue-slider'], {
          width: sliderSize,
          height: sliderSize,
          left: (sliderSize - borderWidth) / 2,
          borderRadius: sliderSize / 2,
          transform: [{
            translateX: this.sliderX
          }]
        }]
      })]
    });
  }
}
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