Vue Funnel Graph JS - Animated Chart

index.html

<div id="app">
  <div class="controls">
    <button @click="getNextSet()">Change Data</button>
    <button @click="toggleDirection()">Toggle Direction</button>
    <button @click="toggleGradient()">Toggle Gradient Direction</button>
  </div>
  <div class="funnels">
    <vue-funnel-graph :width="width" :height="height" :labels="labels" :values="values" :colors="colors" :sub-labels="subLabels" :direction="direction" :gradient-direction="gradientDirection" :animated="true" :display-percentage="true"></vue-funnel-graph>
  </div>
</div>
<div class="repos">
  <a class="repo js-repo" href="https://github.com/greghub/funnel-graph-js" target="_blank"><i class="fab fa-js-square"></i> Get the JS Library</a>
  <a class="repo vue-repo" href="https://github.com/greghub/vue-funnel-graph-js" target="_blank"><i class="fab fa-vuejs"></i> Get the Vue.js Component</a>
</div>

script.js

import { interpolate } from 'https://unpkg.com/[email protected]/lib.es2015/index.js';
import { getDefaultColors, generateLegendBackground } from 'https://cdn.jsdelivr.net/gh/greghub/funnel-graph-js@master/src/js/graph.js';
import { formatNumber } from 'https://cdn.jsdelivr.net/gh/greghub/funnel-graph-js@master/src/js/number.js';

const VueFunnelGraph = Vue.component('VueFunnelGraph', {
  name: 'VueFunnelGraph',
  props: {
    animated: {
      type: Boolean,
      default: false
    },
    width: [String, Number],
    height: [String, Number],
    values: Array,
    labels: Array,
    colors: {
      type: Array,
      default() { return []; }
    },
    subLabels: Array,
    direction: {
      type: String,
      default: 'horizontal'
    },
    gradientDirection: {
      type: String,
      default: 'horizontal'
    },
    displayPercentage: {
      type: Boolean,
      default: true
    }
  },
  data() {
    return {
      paths: [],
      prevPaths: [], // paths before update, used for animations
      graph: null,
      tween: null,
      defaultColors: getDefaultColors(10)
    };
  },
  computed: {
    valuesFormatted() {
      if (this.graph.is2d()) {
        return this.graph.getValues2d().map(value => formatNumber(value));
      }
      return this.values.map(value => formatNumber(value));
    },
    colorSet() {
      const colorSet = [];
      let gradientCount = 0;

      for (let i = 0; i < this.paths.length; i++) {
        const values = this.graph.is2d() ? this.getColors[i] : this.getColors;
        const fillMode = (typeof values === 'string' || values.length === 1) ? 'solid' : 'gradient';
        if (fillMode === 'gradient') gradientCount += 1;
        colorSet.push({
          values,
          fillMode,
          fill: fillMode === 'solid' ? values : `url('#funnelGradient-${gradientCount}')`
        });
      }
      return colorSet;
    },
    gradientSet() {
      const gradientSet = [];
      this.colorSet.forEach((colors) => {
        if (colors.fillMode === 'gradient') {
          gradientSet.push(colors);
        }
      });
      return gradientSet;
    },
    getColors() {
      if (this.colors instanceof Array && this.colors.length === 0) {
        return getDefaultColors(this.is2d() ? this.values[0].length : 2);
      }
      if (this.colors.length < this.paths.length) {
        return [...this.colors].concat(
          [...this.defaultColors].splice(this.paths.length, this.paths.length - this.colors.length)
        );
      }
      return this.colors;
    },
    gradientAngle() {
      return `rotate(${this.gradientDirection === 'vertical' ? 90 : 0})`;
    }
  },
  methods: {
    enterTransition(el, done) {
      if (!this.animated) done();
      setTimeout(() => done(), 700);
    },
    leaveTransition(el, done) {
      if (!this.animated) done();
      setTimeout(() => done(), 700);
    },
    is2d() {
      return this.graph.is2d();
    },
    percentages() {
      return this.graph.createPercentages();
    },
    twoDimPercentages() {
      if (!this.is2d()) {
        return [];
      }
      return this.graph.getPercentages2d();
    },
    subLabelBackgrounds(index) {
      if (!this.is2d()) {
        return [];
      }
      return generateLegendBackground(this.getColors[index], this.gradientDirection);
    },
    offsetColor(index, length) {
      return `${Math.round(100 * index / (length - 1))}%`;
    },
    makeAnimations() {
      if (this.tween !== null) { this.tween.stop(); }
      const interpolators = [];
      const dimensionChanged = this.prevPaths.length !== this.paths.length;

      let origin = { x: 0.5, y: 0.5 };
      if (dimensionChanged) {
        origin = { x: 0, y: 0.5 };
        if (this.graph.isVertical()) {
          origin = { x: 1, y: 1 };
        }
        if (!this.graph.is2d()) {
          origin = { x: 0, y: 1 };
        }
      }

      this.paths.forEach((path, index) => {
        let oldPath = this.prevPaths[index] || this.graph.getPathMedian(index);
        if (dimensionChanged) oldPath = this.graph.getPathMedian(index);
        const interpolator = interpolate([oldPath, path], {
          addPoints: 1,
          origin,
          optimize: 'fill',
          precision: 1
        });

        interpolators.push(interpolator);
      });

      function animate() {
        if (TWEEN.update()) {
          requestAnimationFrame(animate);
        }
      }

      const position = { value: 0 };
      this.tween = new TWEEN.Tween(position)
        .to({ value: 1 }, 700)
        .easing(TWEEN.Easing.Cubic.InOut)
        .onUpdate(() => {
        for (let index = 0; index < this.paths.length; index++) {
          this.paths[index] = interpolators[index](position.value);
          // eslint-disable-next-line no-underscore-dangle
          this.paths.__ob__.dep.notify();
        }
      });

      this.tween.start();
      animate();
    },
    drawPaths() {
      this.prevPaths = this.paths;
      this.paths = [];
      const definitions = this.graph.getPathDefinitions();

      definitions.forEach((d) => {
        this.paths.push(d);
      });
    }
  },
  beforeMount() {
    this.graph = new FunnelGraph({
      height: this.height,
      width: this.width,
      direction: this.direction,
      data: {
        labels: this.labels,
        values: this.values
      }
    });
    this.drawPaths();
    if (this.animated) this.makeAnimations();
  },
  watch: {
    values() {
      this.graph.setValues(this.values);
      this.drawPaths();
      if (this.animated) this.makeAnimations();
    },
    direction() {
      this.graph.setDirection(this.direction)
        .setWidth(this.width)
        .setHeight(this.height);
      this.drawPaths();
    }
  },
  template: `<template>
    <div class="funnel svg-funnel-js" :class="{'svg-funnel-js--vertical': direction === 'vertical'}">
        <div class="svg-funnel-js__container">
            <svg :width="width" :height="height">
                <defs>
                    <linearGradient :id="'funnelGradient-' + (index + 1)"
                                    v-for="(colors, index) in gradientSet"
                                    :key="index"
                                    :gradientTransform="gradientAngle"
                    >
                        <stop :stop-color="color"
                              :offset="offsetColor(index, colors.values.length)"
                              v-for="(color, index) in colors.values"
                              :key="index"
                        ></stop>
                    </linearGradient>
                </defs>
                <path :fill="colorSet[index].fill" :stroke="colorSet[index].fill"
                      :d="path" v-for="(path, index) in paths" :key="index"
                ></path>
            </svg>
        </div>
        <transition-group class="svg-funnel-js__labels" name="appear" tag="div"
                          v-on:enter="enterTransition" v-on:leave="leaveTransition"
        >
            <div class="svg-funnel-js__label" :class="'label-' + (index + 1)"
                 v-for="(value, index) in valuesFormatted" :key="labels[index].toLowerCase().split(' ').join('-')"
            >
                <div class="label__value">{{ value }}</div>
                <div class="label__title" v-if="labels">{{ labels[index] }}</div>
                <div class="label__percentage" v-if="displayPercentage && percentages()[index] !== 100">
                    {{ percentages()[index] }}%
                </div>
                <div class="label__segment-percentages" v-if="is2d()">
                    <ul class="segment-percentage__list">
                        <li v-for="(subLabel, j) in subLabels" :key="j">
                            {{ subLabel }}:
                            <span class="percentage__list-label">{{ twoDimPercentages()[index][j] }}%</span>
                        </li>
                    </ul>
                </div>
            </div>
        </transition-group>
        <transition name="fade" v-on:enter="enterTransition" v-on:leave="leaveTransition">
            <div class="svg-funnel-js__subLabels" v-if="is2d()">
                <div :class="'svg-funnel-js__subLabel svg-funnel-js__subLabel-' + (index + 1)"
                     v-for="(subLabel, index) in subLabels"
                     :key="index"
                >
                    <div class="svg-funnel-js__subLabel--color"
                         :style="subLabelBackgrounds(index)"></div>
                    <div class="svg-funnel-js__subLabel--title">{{ subLabel }}</div>
                </div>
            </div>
        </transition>
    </div>
</template>
        `
})

// export default VueFunnelGraph

new Vue({
  el: '#app',
  components: {
    VueFunnelGraph
  },
  data() {
    return {
      labels: ['Impressions', 'Add To Cart', 'Buy'],
      subLabels: [],
      values: [12000, 5700, 930],
      colors: ['#FFB178', '#FF3C8E'],
      direction: 'horizontal',
      gradientDirection: 'horizontal',
      height: 300,
      width: 800,
      dataSetNum: 1
    };
  },
  methods: {
    useDataSet1() {
      this.labels = ['Impressions', 'Add To Cart', 'Buy'];
      this.subLabels = [];
      this.values = [12000, 4700, 930];
      this.colors = ['#FFB178', '#FF3C8E'];
    },
    useDataSet2() {
      this.labels = ['Impressions', 'Add To Cart', 'Buy'];
      this.subLabels = [];
      this.values = [14000, 9100, 1230];
      this.colors = ['#A0BBFF', '#EC77FF'];
    },
    useDataSet3() {
      this.labels = ['Impressions', 'Add To Cart', 'Buy'];
      this.subLabels = ['Direct', 'Social Media', 'Ads'];
      this.values = [
        [3000, 2500, 6500],
        [3000, 1700, 1000],
        [600, 200, 130]
      ];
      this.colors = [
        ['#FFB178', '#FF78B1', '#FF3C8E'],
        ['#A0BBFF', '#EC77FF'],
        ['#A0F9FF', '#7795FF']
      ];
    },
    useDataSet4() {
      this.labels = ['Impressions', 'Add To Cart', 'Buy', 'Return'];
      this.subLabels = [];
      this.values = [14000, 9100, 4230, 260];
      this.colors = ['#FF4589', '#FF5050'];
    },
    useDataSet5() {
      this.labels = ['Impressions', 'Add To Cart', 'Buy'];
      this.subLabels = [];
      this.values = [12650, 4230, 263];
      this.colors = ['#FF9A9A', '#FFB178'];
    },
    useDataSet6() {
      this.labels = ['Impressions', 'Add To Cart', 'Buy'];
      this.subLabels = ['Direct', 'Social Media', 'Ads', 'Other'];
      this.values = [
        [3000, 2500, 2000, 4500],
        [3000, 1700, 500, 500],
        [600, 200, 100, 30]
      ];
      this.colors = [
        ['#A0BBFF', '#EC77FF'],
        ['#FFB178', '#FF78B1', '#FF3C8E'],
        ['#A0F9FF', '#7795FF']
      ];
    },
    makeVertical() {
      this.direction = 'vertical';
      this.height = 500;
      this.width = 400;
      this.gradientV();
    },
    makeHorizontal() {
      this.direction = 'horizontal';
      this.height = 300;
      this.width = 800;
      this.gradientH();
    },
    toggleDirection() {
      (this.direction === 'horizontal') ? this.makeVertical() : this.makeHorizontal();
    },
    gradientV() {
      this.gradientDirection = 'vertical';
    },
    gradientH() {
      this.gradientDirection = 'horizontal';
    },
    toggleGradient() {
      (this.gradientDirection === 'horizontal') ? this.gradientV() : this.gradientH();
    },
    getNextSet() {
      this.dataSetNum++;
      if (this.dataSetNum > 6) {
        this.dataSetNum = 1;
      }

      this[`useDataSet${this.dataSetNum}`]();
    }
  }
})

scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.10/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/greghub/funnel-graph-js/dist/js/funnel-graph.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tween.js/16.3.5/Tween.min.js"></script>

style.scss

body {
  background-color: #393862;
  overflow-x: hidden;
}

#app {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.funnels {
  height: 560px;
  margin-top: 16px;
}


.funnel:not(.svg-funnel-js--vertical) {
  transition: transform 0.3s ease;
  transform: translateY(60px);
}

.controls {
  display: flex;
  margin-top: 36px;
}

button {
  background-color: #21FFA2;
  color: #393862;
  border-radius: 4px;
  border: none;
  padding: 12px 24px;
  margin: 0 5px;
  font-size: 16px;
  outline: 0;
  cursor: pointer;
}

button:hover {
  background: #05DF9D;
}

.appear-enter-active, .appear-leave-active {
  transition: all .7s ease-in-out;
}

.appear-enter-to, .appear-leave {
  max-width: 100%;
  max-height: 100%;
  opacity: 1;
}

.appear-enter, .appear-leave-to {
  max-width: 0;
  max-height: 0;
  opacity: 0;
}

.fade-enter-active, .fade-leave-active {
  transition: all .3s ease;
}

.fade-enter-to, .fade-leave {
  opacity: 1;
}

.fade-enter, .fade-leave-to {
  opacity: 0;
}

.repos {
  position: fixed;
  margin-top: -72px;
  top: 50%;
  right: 0;
  display: flex;
  flex-direction: column;
  width: 220px;
  
  @media screen and (max-width: 960px) {
    display: none;
  }
  
  .repo {
    background-color: #21FFA2;
    color: #393862;
    font-family: "Open Sans", sans-serif;
    border-radius: 10px 0 0 10px;
    display: flex;
    padding: 8px 12px;
    align-items: center;
    margin: 8px 0;
    text-decoration: none;
    transform: translateX(20px);
    transition: transform 0.3s ease;
    
    &:hover {  
      background: #05DF9D;
      transform: translateX(0);
    }
    
    i {
      font-size: 36px;
      margin-right: 12px;
    }
  }
}

styles

<link href="https://cdn.jsdelivr.net/gh/greghub/funnel-graph-js@master/dist/css/main.min.css" rel="stylesheet" />
<link href="https://cdn.jsdelivr.net/gh/greghub/funnel-graph-js@master/dist/css/theme.min.css" rel="stylesheet" />
<link href="https://use.fontawesome.com/releases/v5.8.1/css/brands.css" rel="stylesheet" />
<link href="https://use.fontawesome.com/releases/v5.8.1/css/fontawesome.css" rel="stylesheet" />

vue-funnel-graph-js-animated-chart.markdown

Vue Funnel Graph JS - Animated Chart

Funnel Graph JS is a library for generating a funnel chart. It generates an SVG chart, adds labels, legend and other info. Some of the features include generating horizontal and vertical funnel charts, applying solid colors and gradients, possibility to generate a two-dimensional funnel chart.

• SVG charts
• Values, Labels, Percentages display
• Two-dimensional graph support
• Legend display
• Detailed percentage breakdown on hover
• Animated
• Solid color and gradient fill
• Horizontal and vertical charts

A Pen by Greg Hovanesyan on CodePen.

License.