Mercurial > gemma
view client/src/components/gauge/Waterlevel.vue @ 4385:610773d34e4f
hydrological_conditions: decouple diagram from dialogue
author | Thomas Junk <thomas.junk@intevation.de> |
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date | Thu, 12 Sep 2019 15:06:53 +0200 |
parents | b146d3c648f8 |
children | f42c6efd76fe |
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<template> <div class="d-flex flex-column flex-fill"> <UIBoxHeader icon="ruler-vertical" :title="title" :closeCallback="close" class="rounded-0" /> <div class="d-flex flex-fill"> <DiagramLegend id="diagramlegendId"> <div class="legend"> <span style="background-color: steelblue; width: 20px; height: 20px;" ></span> Waterlevel </div> <div class="legend"> <span style="width: 8px; height: 8px; background-color: rgba(70, 130, 180, 0.6); border: solid 7px rgba(70, 130, 180, 0.2); background-clip: padding-box; box-sizing: content-box;" ></span> Prediction </div> <div class="legend"> <span style="background-color: rgba(0, 255, 0, 0.1); width: 20px; height: 20px;" ></span> Navigable Range </div> <div> <select @change="applyChange" v-model="form.template" class="form-control d-block custom-select-sm w-100" > <option v-for="template in templates" :value="template" :key="template.name" > {{ template.name }} </option> </select> <button @click="downloadPDF" type="button" class="btn btn-sm btn-info d-block w-100 mt-2" :disabled="!waterlevels.length" > <translate>Export to PDF</translate> </button> <a :class="[ 'btn btn-sm btn-info d-block w-100 mt-2', { disabled: !waterlevels.length } ]" :href="csvLink" :download="csvFileName" > <translate>Export as CSV</translate> </a> <!-- <button @click="downloadSVG" type="button" class="btn btn-sm btn-info d-block w-100 mt-2" :disabled="!waterlevels.length" > <translate>Export as SVG</translate> </button> --> </div> <div class="btn-group-toggle w-100 mt-2"> <label class="btn btn-outline-secondary btn-sm" :class="{ active: showNSC }" ><input type="checkbox" v-model="showNSC" autocomplete="off" />Nash-Sutcliffe </label> </div> </DiagramLegend> <div class="d-flex flex-fill justify-content-center align-items-center" :id="containerId" > <div v-if="!waterlevels.length"> <translate>No data available.</translate> </div> </div> </div> </div> </template> <script> /* This is Free Software under GNU Affero General Public License v >= 3.0 * without warranty, see README.md and license for details. * * SPDX-License-Identifier: AGPL-3.0-or-later * License-Filename: LICENSES/AGPL-3.0.txt * * Copyright (C) 2019 by via donau * – Österreichische Wasserstraßen-Gesellschaft mbH * Software engineering by Intevation GmbH * * Author(s): * * Bernhard Reiter <bernhard@intevation.de> * * Markus Kottländer <markus.kottlaender@intevation.de> * * Fadi Abbud <fadi.abbud@intevation.de> */ import { mapState, mapGetters } from "vuex"; import * as d3Base from "d3"; import { lineChunked } from "d3-line-chunked"; import debounce from "debounce"; import { saveAs } from "file-saver"; import { diagram, pdfgen, templateLoader, refwaterlevels } from "@/lib/mixins"; import { HTTP } from "@/lib/http"; import { displayError } from "@/lib/errors"; import { defaultDiagramTemplate } from "@/lib/DefaultDiagramTemplate"; // we should load only d3 modules we need but for now we'll go with the lazy way // https://www.giacomodebidda.com/how-to-import-d3-plugins-with-webpack/ // d3-line-chunked plugin: https://github.com/pbeshai/d3-line-chunked const d3 = Object.assign(d3Base, { lineChunked }); let temp = null; export default { mixins: [diagram, pdfgen, templateLoader, refwaterlevels], components: { DiagramLegend: () => import("@/components/DiagramLegend") }, data() { return { dateFromD: null, dateToD: null, selectedGaugeD: null, containerId: "waterlevel-diagram-container", resizeListenerFunction: null, form: { template: null }, templates: [], defaultTemplate: defaultDiagramTemplate, pdf: { doc: null, width: 420, height: 297 }, templateData: null, zoomStore: null, showNSC: true }; }, computed: { ...mapState("application", ["paneSetup"]), ...mapState("gauges", [ "dateFrom", "dateTo", "waterlevels", "waterlevelsCSV", "nashSutcliffe" ]), ...mapGetters("gauges", ["selectedGauge"]), title() { if (!this.selectedGaugeD) return; return `${this.selectedGaugeD.properties.objname}: ${this.$gettext( "Waterlevel" )} (${this.dateFromD.toLocaleDateString()} - ${this.dateToD.toLocaleDateString()})`; }, csvLink() { return ( "data:text/csv;charset=utf-8," + encodeURIComponent(this.waterlevelsCSV) ); }, csvFileName() { return `${this.$gettext("waterlevels")}-${ this.selectedGauge.properties.objname }-${this.dateFromD.toISOString().split("T")[0]}-${ this.dateToD.toISOString().split("T")[0] }.csv`; }, hasPredictions() { return this.waterlevels.find(d => d.predicted); } }, watch: { showNSC() { this.drawDiagram({ ...this.zoomStore }); }, paneSetup() { this.$nextTick(() => this.drawDiagram()); }, waterlevels() { this.initialDiagramValues(); this.drawDiagram(); } }, methods: { initialDiagramValues() { this.dateFromD = this.dateFrom; this.dateToD = this.dateTo; this.selectedGaugeD = this.selectedGauge; }, close() { this.$store.commit( "application/paneSetup", this.paneSetup === "GAUGE_WATERLEVEL_HYDROLOGICALCONDITIONS" ? "GAUGE_HYDROLOGICALCONDITIONS" : "DEFAULT" ); }, downloadSVG() { let svg = document.getElementById(this.containerId).firstElementChild; let svgXML = new XMLSerializer().serializeToString(svg); let blog = new Blob([svgXML], { type: "image/svg+xml;charset=utf-8" }); let filename = this.selectedGauge.properties.objname + "-waterlevel-diagram.svg"; saveAs(blog, filename); }, downloadPDF() { let diagramTitle = this.gaugeInfo(this.selectedGauge) + ": Waterlevel " + this.dateFromD.toLocaleDateString() + " - " + this.dateToD.toLocaleDateString(); this.generatePDF({ templateData: this.templateData, diagramTitle: diagramTitle }); this.pdf.doc.save( this.selectedGauge.properties.objname + " Waterlevel-Diagram.pdf" ); }, applyChange() { if (this.form.template.hasOwnProperty("properties")) { this.templateData = this.defaultTemplate; return; } if (this.form.template) { this.loadTemplates("/templates/diagram/" + this.form.template.name) .then(response => { this.prepareImages(response.data.template_data.elements).then( values => { values.forEach(v => { response.data.template_data.elements[v.index].url = v.url; }); this.templateData = response.data.template_data; } ); }) .catch(e => { const { status, data } = e.response; displayError({ title: this.$gettext("Backend Error"), message: `${status}: ${data.message || data}` }); }); } }, // Diagram legend addDiagramLegend(position, offset, color) { let x = offset.x + 2, // 2 is the radius of the circle y = offset.y, padding = 3; this.pdf.doc.setFontStyle("normal"); this.pdf.doc.setFontSize(10); let width = this.pdf.doc.getTextWidth("Navigable Range") + padding; if (["topright", "bottomright"].indexOf(position) !== -1) { x = this.pdf.width - offset.x - width; } if (["bottomright", "bottomleft"].indexOf(position) !== -1) { y = this.pdf.height - offset.y - this.getTextHeight(3); } if (y < this.getTextHeight(1)) { y = y + this.getTextHeight(1) / 2; } this.pdf.doc.setTextColor(color); this.pdf.doc.setDrawColor("white"); this.pdf.doc.setFillColor("steelblue"); this.pdf.doc.circle(x, y, 2, "FD"); this.pdf.doc.text(x + padding, y + 1, "Waterlevel"); this.pdf.doc.setFillColor("#dae6f0"); this.pdf.doc.circle(x, y + 5, 2, "FD"); this.pdf.doc.setFillColor("#e5ffe5"); this.pdf.doc.circle(x, y + 10, 2, "FD"); this.pdf.doc.text(x + padding, y + 11, "Navigable Range"); this.pdf.doc.setDrawColor("#90b4d2"); this.pdf.doc.setFillColor("#90b4d2"); this.pdf.doc.circle(x, y + 5, 0.6, "FD"); this.pdf.doc.text(x + padding, y + 6, "Prediction"); }, getPrintLayout(svgHeight, svgWidth) { return { main: { top: Math.floor(0.05 * svgHeight), right: Math.floor(0.05 * svgWidth), bottom: Math.floor(0.32 * svgHeight), left: Math.floor(0.09 * svgWidth) }, nav: { top: Math.floor(0.78 * svgHeight), right: Math.floor(0.013 * svgWidth), bottom: Math.floor(0.095 * svgHeight), left: Math.floor(0.09 * svgWidth) } }; }, drawDiagram(zoom) { // remove old diagram and exit if necessary data is missing d3.select("#" + this.containerId + " svg").remove(); const elem = document.querySelector("#" + this.containerId); const svgWidth = elem.clientWidth; const svgHeight = elem.clientHeight; const layout = this.getPrintLayout(svgHeight, svgWidth); if (!this.selectedGauge || !this.waterlevels.length || !elem) return; this.renderTo({ element: `#${this.containerId}`, dimensions: this.getDimensions({ svgWidth: svgWidth, svgHeight: svgHeight, ...layout }), zoomLevel: zoom ? zoom : null }); }, renderTo({ element, dimensions, zoomLevel }) { // PREPARE HELPERS // HDC/LDC/MW for the selected gauge const refWaterLevels = JSON.parse( this.selectedGauge.properties.reference_water_levels ); // get min/max values for date and waterlevel axis const extent = this.getExtent(refWaterLevels); // scaling helpers const scale = this.getScale({ dimensions, extent }); // creating the axes based on the scales const axes = { x: d3 .axisTop(scale.x) .tickSizeInner(dimensions.mainHeight) .tickSizeOuter(0), y: d3 .axisRight(scale.y) .tickSizeInner(dimensions.width) .tickSizeOuter(0) .tickFormat(d => this.$options.filters.waterlevel(d)), yRight: d3 .axisRight(scale.y) .tickSizeInner(3) .tickSizeOuter(0) .tickFormat(d => this.$options.filters.waterlevel(d)), x2: d3.axisBottom(scale.x2) }; // DRAW DIAGRAM/NAVIGATION AREAS // create svg const svg = d3 .select(element) .append("svg") .attr("width", "100%") .attr("height", "100%"); // create container for main diagram const diagram = svg .append("g") .attr("class", "main") .attr( "transform", `translate(${dimensions.mainMargin.left}, ${ dimensions.mainMargin.top })` ); // create container for navigation diagram const navigation = svg .append("g") .attr("class", "nav") .attr( "transform", `translate(${dimensions.navMargin.left}, ${dimensions.navMargin.top})` ); // define visible area, everything outside this area will be hidden svg .append("defs") .append("clipPath") .attr("id", "waterlevel-clip") .append("rect") .attr("width", dimensions.width) .attr("height", dimensions.mainHeight); // DRAW DIAGRAM PARTS // Each drawSomething function (with the exception of drawRefLines) // returns a fuction to update the respective chart/area/etc. These // updater functions are used by the zoom feature to rescale all elements. const updaters = []; // draw (order matters) updaters.push(this.drawAxes({ diagram, dimensions, axes, navigation })); updaters.push(this.drawWaterlevelChart({ scale, diagram })); if (this.hasPredictions) { updaters.push(this.drawPredictionAreas({ scale, diagram, navigation })); } updaters.push( this.drawNowLines({ scale, extent, diagram, navigation, dimensions }) ); // static, don't need updater this.drawNavigationChart({ scale, navigation }); this.drawRefLines({ refWaterLevels, diagram, scale, dimensions, extent }); if (this.showNSC) { updaters.push( this.drawNashSutcliffe({ hours: 72, diagram, scale, dimensions }) ); updaters.push( this.drawNashSutcliffe({ hours: 48, diagram, scale, dimensions }) ); updaters.push( this.drawNashSutcliffe({ hours: 24, diagram, scale, dimensions }) ); } // INTERACTIONS // create rectanlge on the main chart area to capture mouse events const eventRect = svg .append("rect") .attr("id", "zoom-waterlevels") .attr("class", "zoom") .attr("width", dimensions.width) .attr("height", dimensions.mainHeight) .attr( "transform", `translate(${dimensions.mainMargin.left}, ${ dimensions.mainMargin.top })` ); this.createZoom({ updaters, eventRect, dimensions, scale, navigation, svg, zoomLevel }); this.createTooltips({ eventRect, diagram, scale, dimensions }); this.setInlineStyles(svg); }, //set the styles of the diagrams to include them in the pdf setInlineStyles(svg) { svg .selectAll(".line") .attr("clip-path", "url(#waterlevel-clip)") .selectAll("path") .attr("stroke", "steelblue") .attr("stroke-width", 2) .attr("fill", "none"); svg .selectAll(".line") .selectAll("path.d3-line-chunked-chunk-gap") .attr("stroke-opacity", 0); svg .selectAll(".line") .selectAll("circle") .attr("fill", "steelblue") .attr("stroke-width", 0); svg .selectAll(".line") .selectAll("circle.d3-line-chunked-chunk-predicted-point") .attr("fill-opacity", 0.6); svg .selectAll(".hdc-line, .mw-line, .ldc-line, .rn-line") .attr("stroke-width", 1) .attr("fill", "none") .attr("clip-path", "url(#waterlevel-clip)"); svg.selectAll(".hdc-line").attr("stroke", "red"); svg.selectAll(".ldc-line").attr("stroke", "green"); svg.selectAll(".mw-line").attr("stroke", "rgb(128,128,128)"); svg.selectAll(".rn-line").attr("stroke", "rgb(128,128,128)"); svg .selectAll(".ref-waterlevel-label") .style("font-size", "10px") .attr("fill", "black"); svg .selectAll(".ref-waterlevel-label-background") .attr("fill", "rgb(255, 255, 255)") .attr("fill-opacity", 0.6); svg .selectAll(".hdc-ldc-area") .attr("fill", "rgb(0, 255, 0)") .attr("fill-opacity", 0.1); svg .selectAll(".now-line") .attr("stroke", "#999") .attr("stroke-width", 1) .attr("stroke-dasharray", "5, 5") .attr("clip-path", "url(#waterlevel-clip)"); svg .selectAll(".now-line-label") .attr("font-size", "11px") .attr("fill", "#999"); svg .selectAll(".prediction-area") .attr("fill", "steelblue") .attr("fill-opacity", 0.2) .attr("clip-path", "url(#waterlevel-clip)"); svg .selectAll("path.nash-sutcliffe") .attr("fill", "none") .attr("stroke", "gray") .attr("stroke-width", 1) .attr("clip-path", "url(#waterlevel-clip)"); svg .selectAll("path.nash-sutcliffe.ns72") .attr("fill", "rgb(255, 255, 255)") .attr("fill-opacity", 0.5); svg .selectAll("text.nash-sutcliffe") .style("font-size", "10px") .attr("clip-path", "url(#waterlevel-clip)") .selectAll("tspan:last-child, tspan:first-child") .attr("fill", "#555"); svg .selectAll(".axis--x .tick line, .axis--y .tick line") .attr("stroke-dasharray", 5) .attr("stroke", "#ccc"); svg.selectAll(".axis--y-right .tick line").attr("stroke", "transparent"); svg.selectAll(".tick text").attr("fill", "black"); svg.selectAll(".domain").attr("stroke", "black"); svg .selectAll(".domain") .attr("stroke", "black") .attr("fill", "none"); svg .selectAll(".zoom") .attr("cursor", "move") .attr("fill", "none") .attr("pointer-events", "all"); svg .selectAll(".brush .selection") .attr("stroke", "none") .attr("fill-opacity", 0.2); svg .selectAll(".brush .handle") .attr("stroke", "rgba(23, 162, 184, 0.5)") .attr("fill", "rgba(23, 162, 184, 0.5)"); svg.selectAll(".brush .overlay").attr("fill", "none"); svg.selectAll(".chart-dots").attr("clip-path", "url(#waterlevel-clip)"); svg .selectAll(".chart-dots .chart-dot") .attr("fill", "steelblue") .attr("stroke", "steelblue") .attr("stroke-opacity", 0) .style("pointer-events", "none") .transition() .attr("fill-opacity", "0.1s"); svg .selectAll(".chart-tooltip") .attr("fill-opacity", 0) .transition() .attr("fill-opacity", "0.3s"); svg .selectAll(".chart-tooltip rect") .attr("fill", "#fff") .attr("stroke", "#ccc"); svg .selectAll(".chart-tooltip text") .attr("fill", "666") .style("font-size", "0.8em"); }, getExtent(refWaterLevels) { let rest; if (refWaterLevels) { // set min/max values for the waterlevel axis // including HDC (+ 1/8 HDC-LDC) and LDC (- 1/4 HDC-LDC) const { LDC, HDC } = this.determineLDCHDC(refWaterLevels); rest = [ { waterlevel: HDC + (HDC - LDC) / 8 }, { waterlevel: Math.max(LDC - (HDC - LDC) / 4, 0) } ]; } else { rest = []; } return { // set min/max values for the date axis date: [this.dateFrom, this.dateTo], waterlevel: d3.extent([...this.waterlevels, ...rest], d => d.waterlevel) }; }, getScale({ dimensions, extent }) { // scaling helpers to convert real world values into pixels const x = d3.scaleTime().range([0, dimensions.width]); const y = d3.scaleLinear().range([dimensions.mainHeight, 0]); const x2 = d3.scaleTime().range([0, dimensions.width]); const y2 = d3.scaleLinear().range([dimensions.navHeight, 0]); const [lo, hi] = extent.waterlevel; // setting the min and max values for the diagram axes const dy = Math.ceil(0.15 * (hi - lo)); x.domain(d3.extent(extent.date)); y.domain([lo - dy, hi + dy]); x2.domain(x.domain()); y2.domain(y.domain()); return { x, y, x2, y2 }; }, drawAxes({ diagram, dimensions, axes, navigation }) { diagram .append("g") .attr("class", "axis--x") .attr("transform", `translate(0, ${dimensions.mainHeight})`) .call(axes.x) .selectAll(".tick text") .attr("y", 15); diagram // label .append("text") .text(this.$gettext("Waterlevel [m]")) .attr("text-anchor", "middle") .attr( "transform", `translate(-45, ${dimensions.mainHeight / 2}) rotate(-90)` ); diagram .append("g") .attr("class", "axis--y") .call(axes.y) .selectAll(".tick text") .attr("x", -25); diagram .append("g") .attr("class", "axis--y-right") .attr("transform", `translate(${dimensions.width})`) .call(axes.yRight) .selectAll(".tick text"); navigation .append("g") .attr("class", "axis axis--x") .attr("transform", `translate(0, ${dimensions.navHeight})`) .call(axes.x2); return () => { diagram .select(".axis--x") .call(axes.x) .selectAll(".tick text") .attr("y", 15); }; }, drawWaterlevelChart({ scale, diagram }) { const waterlevelChartDrawer = () => { let domainLeft = new Date(scale.x.domain()[0].getTime()); let domainRight = new Date(scale.x.domain()[1].getTime()); domainLeft.setDate(domainLeft.getDate() - 1); domainRight.setDate(domainRight.getDate() + 1); let lineChunked = d3 .lineChunked() // render only data points that are visible in the current scale .defined(d => d.date > domainLeft && d.date < domainRight) .x(d => scale.x(d.date)) .y(d => scale.y(d.waterlevel)) .curve(d3.curveLinear) .isNext(this.isNext(scale)) .pointAttrs({ r: 1.7 }); // to avoid creating empty clip-path element if (this.hasPredictions) { lineChunked .chunk(d => (d.predicted ? "predicted" : "line")) .chunkDefinitions({ predicted: {} }); } return lineChunked; }; diagram .append("g") .attr("class", "line") .datum(this.waterlevels) .call(waterlevelChartDrawer()); return () => { diagram.select(".line").call(waterlevelChartDrawer()); }; }, drawNavigationChart({ scale, navigation }) { let lineChunked = d3 .lineChunked() .x(d => scale.x2(d.date)) .y(d => scale.y2(d.waterlevel)) .curve(d3.curveLinear) .isNext(this.isNext(scale)) .pointAttrs({ r: 1.7 }); // to avoid creating empty clip-path element if (this.hasPredictions) { lineChunked .chunk(d => (d.predicted ? "predicted" : "line")) .chunkDefinitions({ predicted: {} }); } navigation .append("g") .attr("class", "line") .datum(this.waterlevels) .call(lineChunked); }, drawNowLines({ scale, extent, diagram, navigation, dimensions }) { const [lo, hi] = extent.waterlevel; const dy = Math.ceil(0.15 * (hi - lo)); const nowLine = d3 .line() .x(d => scale.x(d.x)) .y(d => scale.y(d.y)); const nowLabel = selection => { selection .attr( "transform", `translate(${scale.x(new Date())}, ${scale.y(hi + dy * 0.4)})` ) // hide Now label outside the diagram y-axises .attr( "opacity", scale.x(new Date()) >= dimensions.width || scale.x(new Date()) <= 0 ? 0 : 1 ); }; // draw in main diagram .append("path") .datum([ { x: new Date(), y: lo - dy }, { x: new Date(), y: hi + dy * 0.4 } ]) .attr("class", "now-line") .attr("d", nowLine); diagram // label .append("text") .text(this.$gettext("Now")) .attr("class", "now-line-label") .attr("text-anchor", "middle") .call(nowLabel); // draw in nav navigation .append("path") .datum([{ x: new Date(), y: hi + dy }, { x: new Date(), y: lo - dy }]) .attr("class", "now-line") .attr( "d", d3 .line() .x(d => scale.x2(d.x)) .y(d => scale.y2(d.y)) ); return () => { diagram.select(".now-line").attr("d", nowLine); diagram.select(".now-line-label").call(nowLabel); }; }, drawPredictionAreas({ scale, diagram, navigation }) { const predictionArea = isNav => d3 .area() .defined(d => d.predicted && d.min && d.max) .x(d => scale[isNav ? "x2" : "x"](d.date)) .y0(d => scale[isNav ? "y2" : "y"](d.min)) .y1(d => scale[isNav ? "y2" : "y"](d.max)); diagram .append("path") .datum(this.waterlevels) .attr("class", "prediction-area") .attr("d", predictionArea()); navigation .append("path") .datum(this.waterlevels) .attr("class", "prediction-area") .attr("d", predictionArea(true)); return () => { diagram.select(".prediction-area").attr("d", predictionArea()); }; }, drawRefLines({ refWaterLevels, diagram, scale, dimensions, extent }) { if (refWaterLevels) { const { LDC, HDC } = this.determineLDCHDC(refWaterLevels); // filling area between HDC and LDC if both of them are available if (LDC && HDC) { diagram .append("rect") .attr("class", "hdc-ldc-area") .attr("x", 0) .attr("y", scale.y(HDC)) .attr("width", dimensions.width) .attr("height", refWaterLevels ? scale.y(LDC) - scale.y(HDC) : 0); } } const refWaterlevelLine = d3 .line() .x(d => scale.x(d.x)) .y(d => scale.y(d.y)); const levelStyle = name => { if (/HDC/.test(name)) return "hdc-line"; if (/LDC/.test(name)) return "ldc-line"; return `${name.toLowerCase()}-line`; }; for (let ref in refWaterLevels) { if (refWaterLevels[ref]) { diagram .append("path") .datum([ { x: 0, y: refWaterLevels[ref] }, { x: extent.date[1], y: refWaterLevels[ref] } ]) .attr("class", levelStyle(ref)) .attr("d", refWaterlevelLine); diagram // label .append("rect") .attr("class", "ref-waterlevel-label-background") .attr("x", 1) .attr("y", scale.y(refWaterLevels[ref]) - 13) .attr("width", 55) .attr("height", 12); diagram .append("text") .text( `${ref} (${this.$options.filters.waterlevel( refWaterLevels[ref] )})` ) .attr("class", "ref-waterlevel-label") .attr("x", 5) .attr("y", scale.y(refWaterLevels[ref]) - 3); } } }, drawNashSutcliffe({ hours, diagram, scale, dimensions }) { const coeff = this.nashSutcliffe.coeffs.find(c => c.hours === hours); const dateNow = new Date(this.nashSutcliffe.when); const dateStart = new Date(dateNow.getTime() - hours * 60 * 60 * 1000); const nashSutcliffeBox = (hours, date) => { // show/hide boxes depending on scale of chart (hide if > 90 days) diagram .selectAll("path.nash-sutcliffe") .attr( "stroke-opacity", scale.x.domain()[1] - scale.x.domain()[0] > 90 * 86400000 ? 0 : 1 ) // show boxes only if now line in the selected time range .attr("opacity", dimensions.width >= scale.x(date) ? 1 : 0); return d3 .area() .x(d => scale.x(d)) .y0(() => dimensions.mainHeight + 0.5) .y1( () => dimensions.mainHeight - Math.floor(0.06 * dimensions.mainHeight) * (hours / 24) ); }; const nashSutcliffeLabel = (label, date, hours) => { let days = hours / 24; label .attr("x", Math.min(scale.x(date), dimensions.width) - 4) .attr( "y", dimensions.mainHeight - (Math.floor(0.06 * dimensions.mainHeight) * days + 0.5) + 12 ) // show label only if now line in the selected time range .attr("opacity", dimensions.width >= scale.x(date) ? 1 : 0); }; if (coeff.samples) { diagram .append("path") .datum([dateStart, dateNow]) .attr("class", "nash-sutcliffe ns" + hours) .attr("d", nashSutcliffeBox(hours, dateNow)); diagram .append("text") .attr("class", "nash-sutcliffe ns" + hours) .attr("text-anchor", "end") .call(nashSutcliffeLabel, dateNow, hours) .append("tspan") .text(hours + "h: ") .select(function() { return this.parentNode; }) .append("tspan") .text(coeff.value.toFixed(2)) .select(function() { return this.parentNode; }) .append("tspan") .text(` (${coeff.samples})`); } return () => { diagram .select("path.nash-sutcliffe.ns" + hours) .attr("d", nashSutcliffeBox(hours, dateNow)); diagram .select("text.nash-sutcliffe.ns" + hours) .call(nashSutcliffeLabel, dateNow, hours); }; }, createZoom({ updaters, eventRect, dimensions, scale, navigation, svg, zoomLevel }) { const brush = d3 .brushX() .handleSize(4) .extent([[0, 0], [dimensions.width, dimensions.navHeight]]); const zoom = d3 .zoom() .scaleExtent([1, Infinity]) .translateExtent([[0, 0], [dimensions.width, dimensions.mainHeight]]) .extent([[0, 0], [dimensions.width, dimensions.mainHeight]]); brush.on("brush end", () => { if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom let s = d3.event.selection || scale.x2.range(); scale.x.domain(s.map(scale.x2.invert, scale.x2)); updaters.forEach(u => u && u()); this.setInlineStyles(svg); svg .select(".zoom") .call( zoom.transform, d3.zoomIdentity .scale(dimensions.width / (s[1] - s[0])) .translate(-s[0], 0) ); }); let scaleForZoom = t => { scale.x.domain(t.rescaleX(scale.x2).domain()); updaters.forEach(u => u && u()); this.setInlineStyles(svg); navigation .select(".brush") .call(brush.move, scale.x.range().map(t.invertX, t)); }; zoom.on("zoom", () => { if (d3.event.sourceEvent && d3.event.sourceEvent.type === "brush") { return; // ignore zoom-by-brush } let t = d3.event.transform; // set the zoom to the passed zoom level. if (zoomLevel) { let tx = (zoomLevel.x * dimensions.width) / zoomLevel.width; let k = zoomLevel.k; let ty = zoomLevel.y; t = d3.zoomIdentity.translate(tx, ty).scale(k); zoomLevel = null; // avoid to stuck at same zoom level after setting the zoom by subsequent zooming. } else { temp = { ...d3.event.transform, width: dimensions.width }; } scaleForZoom(t); }); zoom.on("start", () => { svg.select(".chart-dot").style("opacity", 0); svg.select(".chart-tooltip").style("opacity", 0); }); // store the zoom level after zomming is ended zoom.on("end", () => { if (!zoomLevel) { this.zoomStore = temp ? temp : { ...d3.event.transform, width: dimensions.width }; } }); navigation .append("g") .attr("class", "brush") .call(brush) .call(brush.move, scale.x.range()); eventRect.call(zoom); }, createTooltips({ eventRect, diagram, scale, dimensions }) { // create clippable container for the dot diagram .append("g") .attr("class", "chart-dots") .append("circle") .attr("class", "chart-dot") .attr("opacity", 0) .attr("r", 4); // create container for the tooltip const tooltip = diagram.append("g").attr("class", "chart-tooltip"); tooltip .append("rect") .attr("rx", "0.25em") .attr("ry", "0.25em") .attr("width", "0px") .attr("height", "0px"); // create container for multiple text rows const tooltipText = tooltip.append("text").attr("text-anchor", "middle"); // padding inside the tooltip box and diagram padding to determine left // and right offset from the diagram boundaries for the tooltip position. const tooltipPadding = 10; const diagramPadding = 5; eventRect .on("mouseover", () => { diagram.select(".chart-dot").style("opacity", 1); diagram.select(".chart-tooltip").style("opacity", 1); }) .on("mouseout", () => { diagram.select(".chart-dot").style("opacity", 0); diagram.select(".chart-tooltip").style("opacity", 0); }) .on("mousemove", () => { // find data point closest to mouse const x0 = scale.x.invert( d3.mouse(document.getElementById("zoom-waterlevels"))[0] ), i = d3.bisector(d => d.date).left(this.waterlevels, x0, 1), d0 = this.waterlevels[i - 1], d1 = this.waterlevels[i] || d0, d = x0 - d0.date > d1.date - x0 ? d1 : d0; const coords = { x: scale.x(d.date), y: scale.y(d.waterlevel) }; // position the dot diagram .select(".chart-dot") .style("opacity", 1) .attr("transform", `translate(${coords.x}, ${coords.y})`); // remove current texts tooltipText.selectAll("tspan").remove(); // write date tooltipText .append("tspan") .attr("dominant-baseline", "hanging") .attr("text-anchor", "middle") .text( d.date.toLocaleString([], { year: "2-digit", month: "2-digit", day: "2-digit", hour: "2-digit", minute: "2-digit" }) ); if (d.predicted) { tooltipText .append("tspan") .attr("x", 0) .attr("y", 0) .attr("dy", "1.4em") .attr("dominant-baseline", "hanging") .attr("text-anchor", "middle") .text(this.$options.filters.waterlevel(d.max) + " m"); tooltipText .append("tspan") .attr("x", 0) .attr("y", 0) .attr("dy", "2.6em") .attr("dominant-baseline", "hanging") .attr("text-anchor", "middle") .attr("class", "font-weight-bold") .text(this.$options.filters.waterlevel(d.waterlevel) + " m"); tooltipText .append("tspan") .attr("x", 0) .attr("y", 0) .attr("dy", "3.8em") .attr("dominant-baseline", "hanging") .attr("text-anchor", "middle") .text(this.$options.filters.waterlevel(d.min) + " m"); } else { tooltipText .append("tspan") .attr("x", 0) .attr("y", 0) .attr("dy", "1.4em") .attr("dominant-baseline", "hanging") .attr("text-anchor", "middle") .attr("class", "font-weight-bold") .text(this.$options.filters.waterlevel(d.waterlevel) + " m"); } // get text dimensions const textBBox = tooltipText.node().getBBox(); diagram .selectAll(".chart-tooltip text tspan") .attr("x", textBBox.width / 2 + tooltipPadding) .attr("y", tooltipPadding); // position and scale tooltip box const xMax = dimensions.width - (textBBox.width + diagramPadding + tooltipPadding * 2); const tooltipX = Math.max( diagramPadding, Math.min(coords.x - (textBBox.width + tooltipPadding * 2) / 2, xMax) ); let tooltipY = coords.y - (textBBox.height + tooltipPadding * 2) - 10; if (coords.y < textBBox.height + tooltipPadding * 2) { tooltipY = coords.y + 10; } diagram .select(".chart-tooltip") .style("opacity", 1) .attr("transform", `translate(${tooltipX}, ${tooltipY})`) .select("rect") .attr("width", textBBox.width + tooltipPadding * 2) .attr("height", textBBox.height + tooltipPadding * 2); }); }, isNext(scale) { // Check whether points in the chart can be considered "next to each other". // For that they need to be exactly 15 minutes apart (for automatically // imported gauge measurements). If the chart shows more than 15 days then // 1 hour is also valid (for approved gauge measurements). return (prev, current) => { let difference = (current.date - prev.date) / 1000; if ((scale.x.domain()[1] - scale.x.domain()[0]) / 86400000 > 15) return [900, 3600].includes(difference); return difference === 900; }; } }, created() { this.resizeListenerFunction = debounce(this.drawDiagram, 100); window.addEventListener("resize", this.resizeListenerFunction); }, mounted() { // Nasty but necessary if we don't want to use the updated hook to re-draw // the diagram because this would re-draw it also for irrelevant reasons. // In this case we need to wait for the child component (DiagramLegend) to // render. According to the docs (https://vuejs.org/v2/api/#mounted) this // should be possible with $nextTick() but it doesn't work because it does // not guarantee that the DOM is not only updated but also re-painted on the // screen. setTimeout(this.drawDiagram, 150); this.initialDiagramValues(); this.templates[0] = this.defaultTemplate; this.form.template = this.templates[0]; this.templateData = this.form.template; HTTP.get("/templates/diagram", { headers: { "X-Gemma-Auth": localStorage.getItem("token"), "Content-type": "text/xml; charset=UTF-8" } }) .then(response => { if (response.data.length) { this.templates = response.data; this.form.template = this.templates[0]; this.templates[this.templates.length] = this.defaultTemplate; this.applyChange(); } }) .catch(e => { const { status, data } = e.response; displayError({ title: this.$gettext("Backend Error"), message: `${status}: ${data.message || data}` }); }); }, destroyed() { window.removeEventListener("resize", this.resizeListenerFunction); } }; </script>