[export] export buttons for all charts :D

dist/frappe-charts.esm.js

@@ -1278,6 +1278,37 @@ function runSMILAnimation(parent, svgElement, elementsToAnimate) {
 
 const CSSTEXT = ".chart-container{position:relative;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Roboto','Oxygen','Ubuntu','Cantarell','Fira Sans','Droid Sans','Helvetica Neue',sans-serif}.chart-container .axis,.chart-container .chart-label{fill:#555b51}.chart-container .axis line,.chart-container .chart-label line{stroke:#dadada}.chart-container .dataset-units circle{stroke:#fff;stroke-width:2}.chart-container .dataset-units path{fill:none;stroke-opacity:1;stroke-width:2px}.chart-container .dataset-path{stroke-width:2px}.chart-container .path-group path{fill:none;stroke-opacity:1;stroke-width:2px}.chart-container line.dashed{stroke-dasharray:5,3}.chart-container .axis-line .specific-value{text-anchor:start}.chart-container .axis-line .y-line{text-anchor:end}.chart-container .axis-line .x-line{text-anchor:middle}.graph-svg-tip{position:absolute;z-index:99999;padding:10px;font-size:12px;color:#959da5;text-align:center;background:rgba(0,0,0,.8);border-radius:3px}.graph-svg-tip ul{padding-left:0;display:flex}.graph-svg-tip ol{padding-left:0;display:flex}.graph-svg-tip ul.data-point-list li{min-width:90px;flex:1;font-weight:600}.graph-svg-tip strong{color:#dfe2e5;font-weight:600}.graph-svg-tip .svg-pointer{position:absolute;height:5px;margin:0 0 0 -5px;content:' ';border:5px solid transparent;border-top-color:rgba(0,0,0,.8)}.graph-svg-tip.comparison{padding:0;text-align:left;pointer-events:none}.graph-svg-tip.comparison .title{display:block;padding:10px;margin:0;font-weight:600;line-height:1;pointer-events:none}.graph-svg-tip.comparison ul{margin:0;white-space:nowrap;list-style:none}.graph-svg-tip.comparison li{display:inline-block;padding:5px 10px}";
 
+function downloadFile(filename, data) {
+	var a = document.createElement('a');
+	a.style = "display: none";
+	var blob = new Blob(data, {type: "image/svg+xml; charset=utf-8"});
+	var url = window.URL.createObjectURL(blob);
+	a.href = url;
+	a.download = filename;
+	document.body.appendChild(a);
+	a.click();
+	setTimeout(function(){
+		document.body.removeChild(a);
+		window.URL.revokeObjectURL(url);
+	}, 300);
+}
+
+function prepareForExport(svg) {
+	let clone = svg.cloneNode(true);
+	clone.classList.add('chart-container');
+	clone.setAttribute('xmlns', "http://www.w3.org/2000/svg");
+	clone.setAttribute('xmlns:xlink', "http://www.w3.org/1999/xlink");
+	let styleEl = $.create('style', {
+		'innerHTML': CSSTEXT
+	});
+	clone.insertBefore(styleEl, clone.firstChild);
+
+	let container = $.create('div');
+	container.appendChild(clone);
+
+	return container.innerHTML;
+}
+
 class BaseChart {
 	constructor(parent, options) {
 
@@ -1322,8 +1353,8 @@ class BaseChart {
 		this.setMargins();
 
 		// Bind window events
-		window.addEventListener('resize', () => this.draw(true));
-		window.addEventListener('orientationchange', () => this.draw(true));
+		window.addEventListener('resize', () => this.boundDrawFn);
+		window.addEventListener('orientationchange', () => this.boundDrawFn);
 	}
 
 	validateColors(colors, type) {
@@ -1597,45 +1628,18 @@ class BaseChart {
 		return new Chart(this.parent, args);
 	}
 
+	boundDrawFn() {
+		this.draw(true);
+	}
+
 	unbindWindowEvents(){
-		window.removeEventListener('resize', () => this.draw(true));
-		window.removeEventListener('orientationchange', () => this.draw(true));
+		window.removeEventListener('resize', () => this.boundDrawFn);
+		window.removeEventListener('orientationchange', () => this.boundDrawFn);
 	}
 
 	export() {
-		let chartSvg = this.prepareForExport();
-		this.downloadFile(this.title || 'Chart', [chartSvg]);
-	}
-
-	downloadFile(filename, data) {
-		var a = document.createElement('a');
-		a.style = "display: none";
-		var blob = new Blob(data, {type: "image/svg+xml; charset=utf-8"});
-		var url = window.URL.createObjectURL(blob);
-		a.href = url;
-		a.download = filename;
-		document.body.appendChild(a);
-		a.click();
-		setTimeout(function(){
-			document.body.removeChild(a);
-			window.URL.revokeObjectURL(url);
-		}, 300);
-	}
-
-	prepareForExport() {
-		let clone = this.svg.cloneNode(true);
-		clone.classList.add('chart-container');
-		clone.setAttribute('xmlns', "http://www.w3.org/2000/svg");
-		clone.setAttribute('xmlns:xlink', "http://www.w3.org/1999/xlink");
-		let styleEl = $.create('style', {
-			'innerHTML': CSSTEXT
-		});
-		clone.insertBefore(styleEl, clone.firstChild);
-
-		let container = $.create('div');
-		container.appendChild(clone);
-
-		return container.innerHTML;
+		let chartSvg = prepareForExport(this.svg);
+		downloadFile(this.title || 'Chart', [chartSvg]);
 	}
 }
 

docs/assets/js/index.js

@@ -88,7 +88,9 @@ Array.prototype.slice.call(
 	});
 });
 
-aggrChart.export();
+document.querySelector('.export-aggr').addEventListener('click', (e) => {
+	aggrChart.export();
+});
 
 // Update values chart
 // ================================================================================
@@ -179,6 +181,10 @@ chartUpdateButtons.querySelector('[data-update="remove"]').addEventListener("cli
 	updateChart.removeDataPoint();
 });
 
+document.querySelector('.export-update').addEventListener('click', (e) => {
+	updateChart.export();
+});
+
 // Trends Chart
 // ================================================================================
 
@@ -199,7 +205,7 @@ let plotChartArgs = {
 	}
 };
 
-new Chart("#chart-trends", plotChartArgs);
+let trendsChart = new Chart("#chart-trends", plotChartArgs);
 
 Array.prototype.slice.call(
 	document.querySelectorAll('.chart-plot-buttons button')
@@ -227,6 +233,10 @@ Array.prototype.slice.call(
 	});
 });
 
+document.querySelector('.export-trends').addEventListener('click', (e) => {
+	trendsChart.export();
+});
+
 
 // Event chart
 // ================================================================================
@@ -275,7 +285,7 @@ let heatmapArgs = {
 	colors: HEATMAP_COLORS_BLUE,
 	legendScale: [0, 1, 2, 4, 5]
 };
-new Chart("#chart-heatmap", heatmapArgs);
+let heatmapChart = new Chart("#chart-heatmap", heatmapArgs);
 
 Array.prototype.slice.call(
 	document.querySelectorAll('.heatmap-mode-buttons button')
@@ -345,3 +355,7 @@ Array.prototype.slice.call(
 		btn.classList.add('active');
 	});
 });
+
+document.querySelector('.export-heatmap').addEventListener('click', (e) => {
+	heatmapChart.export();
+});

docs/assets/js/index.min.js

@@ -49,6 +49,12 @@ var HEATMAP_COLORS_YELLOW = ['#ebedf0', '#fdf436', '#ffc700', '#ff9100', '#06001
 
 // Universal constants
 
+/**
+ * Returns the value of a number upto 2 decimal places.
+ * @param {Number} d Any number
+ */
+
+
 /**
  * Returns whether or not two given arrays are equal.
  * @param {Array} arr1 First array
@@ -118,7 +124,6 @@ var MONTH_NAMES_SHORT = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
 
 
 
-// https://stackoverflow.com/a/11252167/6495043
 
 
 function clone(date) {
@@ -159,6 +164,8 @@ function addDays(date, numberOfDays) {
 	date.setDate(date.getDate() + numberOfDays);
 }
 
+// Composite Chart
+// ================================================================================
 var reportCountList = [152, 222, 199, 287, 534, 709, 1179, 1256, 1632, 1856, 1850];
 
 var lineCompositeData = {
@@ -378,7 +385,9 @@ Array.prototype.slice.call(document.querySelectorAll('.aggr-type-buttons button'
 	});
 });
 
-aggrChart.export();
+document.querySelector('.export-aggr').addEventListener('click', function (e) {
+	aggrChart.export();
+});
 
 // Update values chart
 // ================================================================================
@@ -465,6 +474,10 @@ chartUpdateButtons.querySelector('[data-update="remove"]').addEventListener("cli
 	updateChart.removeDataPoint();
 });
 
+document.querySelector('.export-update').addEventListener('click', function (e) {
+	updateChart.export();
+});
+
 // Trends Chart
 // ================================================================================
 
@@ -485,7 +498,7 @@ var plotChartArgs = {
 	}
 };
 
-new Chart("#chart-trends", plotChartArgs);
+var trendsChart = new Chart("#chart-trends", plotChartArgs);
 
 Array.prototype.slice.call(document.querySelectorAll('.chart-plot-buttons button')).map(function (el) {
 	el.addEventListener('click', function (e) {
@@ -510,6 +523,10 @@ Array.prototype.slice.call(document.querySelectorAll('.chart-plot-buttons button
 	});
 });
 
+document.querySelector('.export-trends').addEventListener('click', function (e) {
+	trendsChart.export();
+});
+
 // Event chart
 // ================================================================================
 
@@ -556,7 +573,7 @@ var heatmapArgs = {
 	colors: HEATMAP_COLORS_BLUE,
 	legendScale: [0, 1, 2, 4, 5]
 };
-new Chart("#chart-heatmap", heatmapArgs);
+var heatmapChart = new Chart("#chart-heatmap", heatmapArgs);
 
 Array.prototype.slice.call(document.querySelectorAll('.heatmap-mode-buttons button')).map(function (el) {
 	el.addEventListener('click', function (e) {
@@ -617,5 +634,9 @@ Array.prototype.slice.call(document.querySelectorAll('.heatmap-color-buttons but
 	});
 });
 
+document.querySelector('.export-heatmap').addEventListener('click', function (e) {
+	heatmapChart.export();
+});
+
 }());
 //# sourceMappingURL=index.min.js.map

docs/index.html

@@ -100,7 +100,7 @@
                 <button type="button" class="btn btn-sm btn-secondary" data-type='pie'>Pie Chart</button>
                 <button type="button" class="btn btn-sm btn-secondary" data-type='percentage'>Percentage Chart</button>
               </div>
-              <button type="button" class="btn btn-sm btn-tertiary" data-type='export'>Export</button>
+              <button type="button" class="btn btn-sm btn-tertiary export-aggr">Export</button>
               <!-- <p class="text-muted">
                 <a target="_blank" href="http://www.storytellingwithdata.com/blog/2011/07/death-to-pie-charts">Why Percentage?</a>
               </p> -->
@@ -117,6 +117,7 @@
                 <button type="button" class="btn btn-sm btn-secondary" data-update="random">Random Data</button>
                 <button type="button" class="btn btn-sm btn-secondary" data-update="add">Add Value</button>
                 <button type="button" class="btn btn-sm btn-secondary" data-update="remove">Remove Value</button>
+                <button type="button" class="btn btn-sm btn-tertiary export-update">Export</button>
               </div>
             </div>
           </div>
@@ -133,6 +134,7 @@
                 <button type="button" class="btn btn-sm btn-secondary active" data-type="heatline">HeatLine</button>
                 <button type="button" class="btn btn-sm btn-secondary" data-type="regionFill">Region</button>
               </div>
+              <button type="button" class="btn btn-sm btn-tertiary export-trends">Export</button>
               <!-- <pre><code class="hljs javascript margin-vertical-px">  ...
     lineOptions: 'line',   // Line Chart specific properties:
 
@@ -192,6 +194,7 @@
                 <button type="button" class="btn btn-sm btn-secondary active" data-color="blue">Blue</button>
                 <button type="button" class="btn btn-sm btn-secondary" data-color="halloween">GitHub's Halloween</button>
               </div>
+              <button type="button" class="btn btn-sm btn-tertiary export-heatmap">Export</button>
               <pre><code class="hljs javascript margin-vertical-px">  let heatmap = new Chart("#heatmap", {
     type: 'heatmap',
     height: 115,

src/js/charts/BaseChart.js

@@ -6,8 +6,8 @@ import { BASE_CHART_TOP_MARGIN, BASE_CHART_LEFT_MARGIN,
 	ALL_CHART_TYPES, COMPATIBLE_CHARTS, DATA_COLOR_DIVISIONS} from '../utils/constants';
 import { getColor, isValidColor } from '../utils/colors';
 import { runSMILAnimation } from '../utils/animation';
+import { downloadFile, prepareForExport } from '../utils/export';
 import { Chart } from '../chart';
-import { CSSTEXT } from '../../css/chartsCss';
 
 export default class BaseChart {
 	constructor(parent, options) {
@@ -53,8 +53,8 @@ export default class BaseChart {
 		this.setMargins();
 
 		// Bind window events
-		window.addEventListener('resize', () => this.draw(true));
-		window.addEventListener('orientationchange', () => this.draw(true));
+		window.addEventListener('resize', () => this.boundDrawFn);
+		window.addEventListener('orientationchange', () => this.boundDrawFn);
 	}
 
 	validateColors(colors, type) {
@@ -328,44 +328,17 @@ export default class BaseChart {
 		return new Chart(this.parent, args);
 	}
 
-	unbindWindowEvents(){
-		window.removeEventListener('resize', () => this.draw(true));
-		window.removeEventListener('orientationchange', () => this.draw(true));
+	boundDrawFn() {
+		this.draw(true);
 	}
 
-	export() {
-		let chartSvg = this.prepareForExport();
-		this.downloadFile(this.title || 'Chart', [chartSvg]);
-	}
-
-	downloadFile(filename, data) {
-		var a = document.createElement('a');
-		a.style = "display: none";
-		var blob = new Blob(data, {type: "image/svg+xml; charset=utf-8"});
-		var url = window.URL.createObjectURL(blob);
-		a.href = url;
-		a.download = filename;
-		document.body.appendChild(a);
-		a.click();
-		setTimeout(function(){
-			document.body.removeChild(a);
-			window.URL.revokeObjectURL(url);
-		}, 300);
+	unbindWindowEvents(){
+		window.removeEventListener('resize', () => this.boundDrawFn);
+		window.removeEventListener('orientationchange', () => this.boundDrawFn);
 	}
 
-	prepareForExport() {
-		let clone = this.svg.cloneNode(true);
-		clone.classList.add('chart-container');
-		clone.setAttribute('xmlns', "http://www.w3.org/2000/svg");
-		clone.setAttribute('xmlns:xlink', "http://www.w3.org/1999/xlink");
-		let styleEl = $.create('style', {
-			'innerHTML': CSSTEXT
-		});
-		clone.insertBefore(styleEl, clone.firstChild);
-
-		let container = $.create('div');
-		container.appendChild(clone);
-
-		return container.innerHTML;
+	export() {
+		let chartSvg = prepareForExport(this.svg);
+		downloadFile(this.title || 'Chart', [chartSvg]);
 	}
 }

src/js/utils/export.js

@@ -0,0 +1,33 @@
+import { $ } from '../utils/dom';
+import { CSSTEXT } from '../../css/chartsCss';
+
+export function downloadFile(filename, data) {
+	var a = document.createElement('a');
+	a.style = "display: none";
+	var blob = new Blob(data, {type: "image/svg+xml; charset=utf-8"});
+	var url = window.URL.createObjectURL(blob);
+	a.href = url;
+	a.download = filename;
+	document.body.appendChild(a);
+	a.click();
+	setTimeout(function(){
+		document.body.removeChild(a);
+		window.URL.revokeObjectURL(url);
+	}, 300);
+}
+
+export function prepareForExport(svg) {
+	let clone = svg.cloneNode(true);
+	clone.classList.add('chart-container');
+	clone.setAttribute('xmlns', "http://www.w3.org/2000/svg");
+	clone.setAttribute('xmlns:xlink', "http://www.w3.org/1999/xlink");
+	let styleEl = $.create('style', {
+		'innerHTML': CSSTEXT
+	});
+	clone.insertBefore(styleEl, clone.firstChild);
+
+	let container = $.create('div');
+	container.appendChild(clone);
+
+	return container.innerHTML;
+}