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

UI components for WordPress.

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

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

/**
 * Internal dependencies
 */
import styles from './style.native.scss';
import { jsx as _jsx, jsxs as _jsxs } from "react/jsx-runtime";
export default class SaturationValuePicker extends Component {
  constructor(props) {
    super(props);
    this.panResponder = PanResponder.create({
      onStartShouldSetPanResponder: () => true,
      onStartShouldSetPanResponderCapture: () => true,
      onMoveShouldSetPanResponder: () => true,
      onMoveShouldSetPanResponderCapture: () => true,
      onPanResponderGrant: (evt, gestureState) => {
        const {
          onPress
        } = this.props;
        const {
          saturation,
          value
        } = this.computeSatValPress(evt);
        this.dragStartValue = {
          saturation,
          value
        };
        if (onPress) {
          onPress({
            ...this.computeSatValPress(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
    });
  }
  normalizeValue(value) {
    if (value < 0) {
      return 0;
    }
    if (value > 1) {
      return 1;
    }
    return value;
  }
  computeSatValDrag(gestureState) {
    const {
      dx,
      dy
    } = gestureState;
    const {
      size
    } = this.props;
    const {
      saturation,
      value
    } = this.dragStartValue;
    const diffx = dx / size.width;
    const diffy = dy / size.height;
    return {
      saturation: this.normalizeValue(saturation + diffx),
      value: this.normalizeValue(value - diffy)
    };
  }
  computeSatValPress(event) {
    const {
      nativeEvent
    } = event;
    const {
      locationX,
      locationY
    } = nativeEvent;
    const {
      size
    } = this.props;
    return {
      saturation: this.normalizeValue(locationX / size.width),
      value: 1 - this.normalizeValue(locationY / size.height)
    };
  }
  fireDragEvent(eventName, gestureState) {
    const {
      [eventName]: event
    } = this.props;
    if (event) {
      event({
        ...this.computeSatValDrag(gestureState),
        gestureState
      });
    }
  }
  render() {
    const {
      size,
      sliderSize = 24,
      hue = 0,
      value = 1,
      saturation = 1,
      containerStyle = {},
      borderRadius = 0,
      currentColor
    } = this.props;
    return /*#__PURE__*/_jsxs(View, {
      style: [styles['hsv-container'], containerStyle, {
        height: size.height + sliderSize,
        width: size.width + sliderSize
      }],
      ...this.panResponder.panHandlers,
      children: [/*#__PURE__*/_jsx(LinearGradient, {
        style: [styles['gradient-container'], {
          borderRadius
        }],
        colors: ['#fff', colord({
          h: hue,
          s: 100,
          l: 50
        }).toHex()],
        start: {
          x: 0,
          y: 0.5
        },
        end: {
          x: 1,
          y: 0.5
        },
        children: /*#__PURE__*/_jsx(LinearGradient, {
          colors: ['rgba(0, 0, 0, 0)', '#000'],
          children: /*#__PURE__*/_jsx(View, {
            style: {
              height: size.height,
              width: size.width
            }
          })
        })
      }), /*#__PURE__*/_jsx(View, {
        pointerEvents: "none",
        style: [styles['saturation-slider'], {
          width: sliderSize,
          height: sliderSize,
          borderRadius: sliderSize / 2,
          borderWidth: sliderSize / 10,
          backgroundColor: currentColor,
          transform: [{
            translateX: size.width * saturation
          }, {
            translateY: size.height * (1 - value)
          }]
        }]
      })]
    });
  }
}
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