@streetscape.gl/monochrome/dist/es6/shared/slider/index.js

A toolkit of React components for streetscape.gl

import _extends from "@babel/runtime/helpers/esm/extends";
import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }

import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import styled from '@emotion/styled';
import { withTheme, evaluateStyle } from '../theme';
import Draggable from '../draggable';
import { clamp } from '../../utils/math';

function snap(x, min, max, step) {
  if (step > 0) {
    x = Math.round((x - min) / step) * step + min;
  }

  return clamp(x, min, max);
}

const SliderWrapper = styled.div(props => _objectSpread(_objectSpread({}, props.theme.__reset__), {}, {
  outline: 'none',
  color: props.isEnabled ? props.theme.textColorPrimary : props.theme.textColorDisabled,
  cursor: 'pointer',
  pointerEvents: props.isEnabled ? 'all' : 'none',
  paddingTop: props.knobSize / 2,
  paddingBottom: props.knobSize / 2
}, evaluateStyle(props.userStyle, props)));
const SliderTrack = styled.div(props => _objectSpread({
  position: 'relative',
  width: '100%',
  background: props.isEnabled ? props.theme.controlColorPrimary : props.theme.controlColorDisabled,
  height: 2
}, evaluateStyle(props.userStyle, props)));
const SliderTrackFill = styled.div(props => _objectSpread({
  position: 'absolute',
  transitionProperty: 'width',
  transitionDuration: props.isDragging ? '0s' : props.theme.transitionDuration,
  transitionTimingFunction: props.theme.transitionTimingFunction,
  height: '100%',
  background: props.isEnabled ? props.theme.controlColorActive : props.theme.controlColorDisabled
}, evaluateStyle(props.userStyle, props)));
const SliderKnob = styled.div(props => _objectSpread({
  position: 'absolute',
  borderStyle: 'solid',
  borderWidth: 2,
  borderColor: props.isEnabled ? props.isHovered ? props.theme.controlColorHovered : props.hasFocus ? props.theme.controlColorActive : props.theme.controlColorPrimary : props.theme.controlColorDisabled,
  background: props.theme.background,
  boxSizing: 'border-box',
  width: props.knobSize,
  height: props.knobSize,
  borderRadius: '50%',
  margin: -props.knobSize / 2,
  top: '50%',
  transitionProperty: 'left',
  transitionDuration: props.isDragging ? '0s' : props.theme.transitionDuration
}, evaluateStyle(props.userStyle, props)));

class Slider extends PureComponent {
  constructor() {
    super(...arguments);

    _defineProperty(this, "state", {
      width: 1,
      isHovered: false,
      hasFocus: false,
      isDragging: false,
      hasDragged: false
    });

    _defineProperty(this, "_updateValue", (offsetX, width) => {
      const {
        min,
        max,
        step
      } = this.props;
      const pos = clamp(offsetX / width, 0, 1);
      const value = snap(min + (max - min) * pos, min, max, step);
      this.props.onChange(value);
    });

    _defineProperty(this, "_onMouseEnter", () => this.setState({
      isHovered: true
    }));

    _defineProperty(this, "_onMouseLeave", () => this.setState({
      isHovered: false
    }));

    _defineProperty(this, "_onFocus", () => this.setState({
      hasFocus: true
    }));

    _defineProperty(this, "_onBlur", () => this.setState({
      hasFocus: false
    }));

    _defineProperty(this, "_onKeyDown", evt => {
      let delta;

      switch (evt.keyCode) {
        case 37:
          delta = -1;
          break;

        case 39:
          delta = 1;
          break;

        default:
          return;
      }

      const {
        value,
        min,
        max
      } = this.props;
      const step = this.props.step || (max - min) / 20;
      const newValue = clamp(value + step * delta, min, max);

      if (newValue !== value) {
        this.props.onChange(newValue);
      }
    });

    _defineProperty(this, "_onDragStart", evt => {
      const width = this._track.clientWidth;
      this.setState({
        width
      });

      this._updateValue(evt.offsetX, width);

      this.setState({
        isDragging: true
      });
    });

    _defineProperty(this, "_onDrag", evt => {
      this._updateValue(evt.offsetX, this.state.width);

      this.setState({
        hasDragged: evt.hasDragged
      });
    });

    _defineProperty(this, "_onDragEnd", evt => {
      this.setState({
        isDragging: false,
        hasDragged: false
      });
    });
  }

  render() {
    const {
      value,
      min,
      max,
      step,
      isEnabled,
      children,
      className,
      style,
      theme
    } = this.props;
    const {
      isHovered,
      isDragging,
      hasFocus,
      hasDragged
    } = this.state;
    const {
      tolerance = 0,
      knobSize = theme.controlSize
    } = style;
    const ratio = (snap(value, min, max, step) - min) / (max - min);
    const styleProps = {
      theme,
      knobSize,
      isEnabled,
      isHovered,
      hasFocus,
      isActive: isDragging,
      isDragging: hasDragged
    };
    return React.createElement(SliderWrapper, _extends({}, styleProps, {
      userStyle: style.wrapper,
      className: className,
      tabIndex: isEnabled ? 0 : -1,
      onMouseEnter: this._onMouseEnter,
      onMouseLeave: this._onMouseLeave,
      onFocus: this._onFocus,
      onBlur: this._onBlur,
      onKeyDown: this._onKeyDown
    }), React.createElement(Draggable, {
      tolerance: knobSize / 2 + tolerance,
      onDragStart: this._onDragStart,
      onDrag: this._onDrag,
      onDragEnd: this._onDragEnd
    }, React.createElement(SliderTrack, _extends({
      userStyle: style.track
    }, styleProps, {
      ref: _ref => {
        this._track = _ref;
      }
    }), children, React.createElement(SliderTrackFill, _extends({}, styleProps, {
      userStyle: style.trackFill,
      style: {
        width: "".concat(ratio * 100, "%")
      }
    })), React.createElement(SliderKnob, _extends({}, styleProps, {
      userStyle: style.knob,
      style: {
        left: "".concat(ratio * 100, "%")
      }
    })))));
  }

}

_defineProperty(Slider, "propTypes", {
  value: PropTypes.number.isRequired,
  min: PropTypes.number.isRequired,
  max: PropTypes.number.isRequired,
  onChange: PropTypes.func,
  className: PropTypes.string,
  style: PropTypes.object,
  step: PropTypes.number,
  label: PropTypes.string,
  tooltip: PropTypes.string,
  badge: PropTypes.element,
  isEnabled: PropTypes.bool
});

_defineProperty(Slider, "defaultProps", {
  className: '',
  style: {},
  step: 0,
  isEnabled: true,
  onChange: () => {}
});

export default withTheme(Slider);
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