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annotate client/src/components/TimeSlider.vue @ 5037:9d288d9b851b time-sliding

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client: move selectedTime to store
author Fadi Abbud <fadi.abbud@intevation.de>
date Thu, 27 Feb 2020 09:53:11 +0100
parents 8f421cd3c746
children 9d26f67dd916
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5036
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1 <template>
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2 <div
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3 id="slider"
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4 :class="[
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5 'd-flex box ui-element rounded bg-white flex-row',
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6 { expanded: showTimeSlider }
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7 ]"
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8 >
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9 <div
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10 id="sliderContainer"
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11 class="d-flex sliderContainer"
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12 style="width: 98%;"
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13 ></div>
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14 <div @click="close" class="d-flex box-control mr-0" style="width: 2%;">
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15 <font-awesome-icon icon="times"></font-awesome-icon>
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16 </div>
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17 </div>
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18 </template>
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19 <style lang="sass" scoped>
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20 #slider
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21 position: absolute
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22 bottom: 0
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23 min-width: 100vw;
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24 &.expanded
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25 max-height: 100%;
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26 max-width: 100%;
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27 margin: 0
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28 </style>
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29 <script>
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30 /* This is Free Software under GNU Affero General Public License v >= 3.0
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31 * without warranty, see README.md and license for details.
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32 *
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33 * SPDX-License-Identifier: AGPL-3.0-or-later
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34 * License-Filename: LICENSES/AGPL-3.0.txt
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35 *
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36 * Copyright (C) 2020 by via donau
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37 * – Österreichische Wasserstraßen-Gesellschaft mbH
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38 * Software engineering by Intevation GmbH
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39 *
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40 * Author(s):
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41 * Fadi Abbud <fadiabbud@intevation.de>
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42 */
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43 import { mapState } from "vuex";
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44 import * as d3 from "d3";
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45 export default {
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46 name: "timeslider",
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47 data() {
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48 return {
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49 newX: null
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50 };
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51 },
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52 computed: {
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53 ...mapState("application", ["showTimeSlider"]),
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54 selectedTime: {
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55 get() {
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56 return this.$store.state.application.selectedTime;
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57 },
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58 set(value) {
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59 this.$store.commit("application/setSelectedTime", value);
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60 }
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61 }
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62 },
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63 methods: {
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64 close() {
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65 this.$store.commit("application/showTimeSlider", false);
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66 },
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67 createSlider() {
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68 const element = document.getElementById("sliderContainer");
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69 const svgWidth = element ? element.clientWidth : 0,
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70 svgHeight = 40,
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71 marginTop = 20,
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72 marginLeft = 0;
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73
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74 this.newX = this.getScale();
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75 let svg = d3
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76 .select(".sliderContainer")
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77 .append("svg")
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78 .attr("width", svgWidth)
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79 .attr("height", svgHeight);
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80
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81 // zoom event
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82 let zoom = d3
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83 .zoom()
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84 .scaleExtent([0, Infinity])
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85 .translateExtent([[0, 0], [svgWidth, svgHeight]])
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86 .extent([[0, 0], [(svgWidth, svgHeight)]])
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87 .on("zoom", this.zoomed);
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88
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89 svg
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90 .append("g")
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91 .attr("class", "axis--x")
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92 .attr("transform", `translate(${marginLeft}, ${marginTop})`)
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93 .call(
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94 d3.axisBottom(this.newX).ticks(12)
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95 //.tickFormat(dFormat)
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96 );
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97
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98 // create rectanlge on the slider area to capture mouse events
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99 const eventRect = svg
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100 .append("rect")
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101 .attr("id", "zoom")
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102 .attr("class", "zoom")
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103 .attr("width", svgWidth)
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104 .attr("height", svgHeight)
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105 .attr("fill", "white")
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106 .attr("opacity", 0.2)
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107 .on("mouseover", () => {
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108 svg.select(".zoom").attr("cursor", "move");
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109 });
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110 eventRect.call(zoom).on("click", this.onClick);
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111
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112 const toIsoDate = d => {
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113 return d.toISOString();
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114 };
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115
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116 let drag = d3
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117 .drag()
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118 .on("start", () => {
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119 d3.select(".line")
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120 .raise()
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121 .classed("active", true);
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122 })
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123 .on("drag", this.onDrag)
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124 .on("end", () => {
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125 d3.select(".line").classed("active", false);
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126 });
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127
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128 // Create cursor to indicate to the selected time
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129 svg
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130 .append("rect")
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131 .attr("class", "line")
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132 .attr("id", "scrubber")
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133 .attr("x", this.newX(d3.isoParse(toIsoDate(this.selectedTime))))
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134 .attr("y", 0)
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135 .attr("width", 2)
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136 .attr("height", svgHeight)
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137 .attr("stroke", "#17a2b8")
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138 .attr("stroke-width", 2)
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139 .attr("opacity", 0.6)
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140 .on("mouseover", () => {
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141 svg.select(".line").attr("cursor", "e-resize");
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142 })
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143 .call(drag);
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144 },
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145 getScale() {
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146 return d3
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147 .scaleTime()
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148 .range([0, document.getElementById("sliderContainer").clientWidth || 0])
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149 .domain([
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150 d3.isoParse(new Date("2020-01-01")),
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151 d3.isoParse(new Date("2020-03-01"))
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152 ]);
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153 },
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154 zoomed() {
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155 let scale = this.getScale();
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156 this.newX = d3.event.transform.rescaleX(scale);
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157 d3.select(".axis--x").call(
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158 d3.axisBottom(this.newX).ticks(12)
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159 //.tickFormat(dFormat)
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160 );
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161 d3.select(".line").attr("x", this.newX(d3.isoParse(this.selectedTime)));
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162 },
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163 onClick() {
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164 // Extract the click location
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165 let point = d3.mouse(document.getElementById("zoom")),
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166 p = { x: point[0], y: point[1] };
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167 d3.select(".line").attr("x", p.x);
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168 this.selectedTime = d3.isoParse(this.newX.invert(p.x + 2));
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169 },
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170 onDrag() {
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171 this.selectedTime = d3.isoParse(this.newX.invert(d3.event.x + 2));
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172 d3.select(".line").attr("x", d3.event.x);
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173 }
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174 },
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175 mounted() {
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176 setTimeout(this.createSlider, 150);
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177 }
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178 };
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179 </script>