framework7/components/color-picker/modules/brightness-slider.js

Full featured mobile HTML framework for building iOS & Android apps

import { colorHsbToHsl } from '../../../shared/utils.js';
/** @jsx $jsx */
import $jsx from '../../../shared/$jsx.js';
export default {
  render(self) {
    const {
      sliderLabel,
      sliderValue,
      sliderValueEditable,
      brightnessLabelText
    } = self.params;
    return $jsx("div", {
      class: "color-picker-module color-picker-module-brightness-slider"
    }, $jsx("div", {
      class: "color-picker-slider-wrap"
    }, sliderLabel && $jsx("div", {
      class: "color-picker-slider-label"
    }, brightnessLabelText), $jsx("div", {
      class: "range-slider color-picker-slider color-picker-slider-brightness"
    }), sliderValue && $jsx("div", {
      class: "color-picker-slider-value"
    }, sliderValueEditable ? $jsx("input", {
      type: "number",
      step: "0.1",
      min: "0",
      max: "100",
      class: "color-picker-value-brightness"
    }) : $jsx("span", {
      class: "color-picker-value-brightness"
    }))));
  },
  init(self) {
    self.brightnessRangeSlider = self.app.range.create({
      el: self.$el.find('.color-picker-slider-brightness'),
      min: 0,
      max: 1,
      step: 0.001,
      value: 0,
      on: {
        change(range, value) {
          const b = Math.floor(value * 1000) / 1000;
          self.setValue({
            hsb: [self.value.hsb[0], self.value.hsb[1], b]
          });
        }
      }
    });
  },
  update(self) {
    const {
      value,
      app
    } = self;
    const {
      sliderValue,
      sliderValueEditable
    } = self.params;
    const {
      hsb
    } = value;
    self.brightnessRangeSlider.value = hsb[2];
    self.brightnessRangeSlider.layout();
    const hslCurrent = colorHsbToHsl(hsb[0], hsb[1], hsb[2]);
    const hslLeft = colorHsbToHsl(hsb[0], hsb[1], 0);
    const hslRight = colorHsbToHsl(hsb[0], hsb[1], 1);
    self.brightnessRangeSlider.$el[0].style.setProperty('--f7-range-knob-color', `hsl(${hslCurrent[0]}, ${hslCurrent[1] * 100}%, ${hslCurrent[2] * 100}%)`);
    self.brightnessRangeSlider.$el.find('.range-bar').css('background-image', `linear-gradient(${app.rtl ? 'to left' : 'to right'}, hsl(${hslLeft[0]}, ${hslLeft[1] * 100}%, ${hslLeft[2] * 100}%), hsl(${hslRight[0]}, ${hslRight[1] * 100}%, ${hslRight[2] * 100}%))`);
    if (sliderValue && sliderValueEditable) {
      self.$el.find('input.color-picker-value-brightness').val(`${hsb[2] * 1000 / 10}`);
    } else if (sliderValue) {
      self.$el.find('span.color-picker-value-brightness').text(`${hsb[2] * 1000 / 10}`);
    }
  },
  destroy(self) {
    if (self.brightnessRangeSlider && self.brightnessRangeSlider.destroy) {
      self.brightnessRangeSlider.destroy();
    }
    delete self.brightnessRangeSlider;
  }
};