import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import './styles.css';
//
import * as wjChart from '@mescius/wijmo.chart';
import * as wijmo from '@mescius/wijmo';
import { getData } from './data';
//
document.readyState === 'complete' ? init() : window.onload = init;
//
function init() {
let rendered = false, wjSelected = 'wj-state-selected', selections = [], mouseDown = false, start = null, end = null, selector = null, offset = null, mousePt = null, isTouch = false, items = [];
//
// create the chart
let chart = new wjChart.FlexChart('#theChart', {
chartType: 'Scatter',
axisY: {
axisLine: true
},
legend: {
position: 'None'
},
series: [
{
name: 'Experiment 1',
itemsSource: getData(50, 0, 3),
bindingX: 'x',
binding: 'y'
},
{
name: 'Experiment 2',
itemsSource: getData(40, 100, 12),
bindingX: 'x',
binding: 'y'
},
{
name: 'Experiment 3',
itemsSource: getData(30, -100, 24),
bindingX: 'x',
binding: 'y'
}
],
rendered: (sender) => {
if (!rendered) {
sender.hostElement.addEventListener('mousedown', chartMouseDown);
sender.hostElement.addEventListener('mousemove', chartMouseMove);
sender.hostElement.addEventListener('mouseup', chartMouseUp);
sender.hostElement.addEventListener('mouseleave', chartMouseLeave);
sender.hostElement.addEventListener('click', chartClick);
window.addEventListener('touchstart', () => isTouch = true, false);
//
// boolean flag - don't re-add event listener after resize
rendered = true;
//
selector = document.querySelector('#plotSelection');
sender.hostElement.appendChild(selector);
}
else {
// *visually* restore selection after redraw (ex. resize browser, change chart type)
restoreSelection();
}
}
});
//
// helper for clearing chart selection
function clearSelection() {
selections.forEach(item => {
let series = item.series, el = series.getPlotElement(item.pointIndex);
//
if (el) {
wijmo.removeClass(el, wjSelected);
}
});
//
selections.length = 0;
}
//
// helper for adding chart selection
function addSelection(obj) {
wijmo.addClass(obj.series.getPlotElement(obj.pointIndex), wjSelected);
//
selections.push({
series: obj.series,
pointIndex: obj.pointIndex
});
}
//
// helper for removing chart selection
function removeSelection(ht) {
let items = selections.filter(item => item.series === ht.series && item.pointIndex === ht.pointIndex), idx = items && items.length > 0 ? selections.indexOf(items[0]) : -1;
//
if (idx >= 0) {
selections.splice(idx, 1);
wijmo.removeClass(ht.series.getPlotElement(ht.pointIndex), wjSelected);
}
}
//
// finds selected plot elements after rendering and applies CSS to
// visually represent selection
function restoreSelection() {
selections.forEach(item => {
let series = item.series, el = series.getPlotElement(item.pointIndex);
//
if (el) {
wijmo.addClass(el, wjSelected);
}
});
}
//
// helper to hide the selector
function hideSelector() {
wijmo.setCss(selector, {
'visibility': 'hidden',
'width': 0,
'height': 0,
'left': 0,
'top': 0
});
}
//
// selects plot elements within drawn rectangle
function selectWithinRect(rect) {
if (!rect || !chart) {
return;
}
//
chart.series.forEach((item) => {
let pointCount = item._getLength();
//
for (let j = 0; j < pointCount; j++) {
let el = item.getPlotElement(j);
//
if (elementInBounds(el, rect)) {
addSelection({
series: item,
pointIndex: j
});
}
}
});
}
//
// helper to determine if plot element is within the bounds
// of the drawn rectangle
function elementInBounds(el, rect) {
let box = el.getBoundingClientRect();
return !(box.left > rect.right || box.right < rect.left || box.top > rect.bottom || box.bottom < rect.top);
}
//
// clear selection for button click
function clear() {
clearSelection();
// update length for view
items.length = 0;
}
//
function chartClick(e) {
if (mouseDown && !isTouch) {
isTouch = false;
return;
}
//
let p = wijmo.mouseToPage(e);
if (mousePt.x !== p.x || mousePt.y !== p.y) {
return;
}
//
let element = e.target, ht = chart.hitTest(e), selected = false, chartType = chart.chartType;
//
selected = selections.some(function (item) {
return item.series === ht.series && item.pointIndex === ht.pointIndex;
});
//
if (ht && ht.series && !selected && ((ht.distance <= 0 && (chartType == 0 || chartType == 1)) || ht.distance <= 15) && isTouch) {
// remove selection
if (wijmo.hasClass(element, wjSelected)) {
removeSelection(ht);
}
// add selection
else {
addSelection(ht);
}
}
else if (selected && ((ht.distance <= 0 && (chartType == 0 || chartType == 1)) || ht.distance <= 15) && isTouch) {
removeSelection(ht);
}
else {
clearSelection();
}
//
isTouch = false;
// update length for view
items.length = 0;
items.push.apply(items, selections);
}
//
function chartMouseDown(e) {
mousePt = wijmo.mouseToPage(e);
mouseDown = true;
e.preventDefault();
}
//
function chartMouseUp(e) {
if (start != null) {
start = null;
}
//
if (end != null) {
let host = chart.hostElement;
offset = wijmo.getElementRect(host);
//
let style = host.getAttribute('style');
offset.left = offset.left + parseInt(style ? style['padding-left'].replace('px', '') : 0);
offset.top = offset.top + parseInt(style ? style['padding-top'].replace('px', '') : 0);
//
end = start = null;
//
clear();
selectWithinRect(selector.getBoundingClientRect());
//
// update length for view
items.length = 0;
items.push.apply(items, selections);
//
e.preventDefault();
}
//
hideSelector();
mouseDown = false;
}
//
function chartMouseMove(e) {
let p = wijmo.mouseToPage(e);
if (!mouseDown || (mousePt.x == p.x && mousePt.y == p.y)) {
return;
}
//
let pt = e instanceof MouseEvent ? new wijmo.Point(e.pageX, e.pageY) : new wijmo.Point(e.changedTouches[0].pageX, e.changedTouches[0].pageY);
//
if (start != null) {
end = pt;
//
// update selector rectangle
let w = pt.x - start.x, h = pt.y - start.y;
//
if (w >= 0) {
wijmo.setCss(selector, {
'left': start.x - offset.left,
'width': w
});
}
else {
wijmo.setCss(selector, {
'left': pt.x - offset.left,
'width': -w
});
}
//
if (h >= 0) {
wijmo.setCss(selector, {
'top': start.y - offset.top,
'height': h
});
}
else {
wijmo.setCss(selector, {
'top': pt.y - offset.top,
'height': -h
});
}
}
else {
wijmo.setCss(selector, {
'visibility': 'visible'
});
offset = wijmo.getElementRect(selector);
//
start = pt;
}
//
e.preventDefault();
}
//
function chartMouseLeave(e) {
if (start) {
start = end = null;
mouseDown = false;
hideSelector();
}
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>MESCIUS Wijmo FlexChart Select Box</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- SystemJS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('./src/app');
</script>
</head>
<body>
<div class="container-fluid">
<div id="plotSelection"></div>
<div id="theChart"></div>
</div>
</body>
</html>
export function getData(cnt, a, b) {
let arr = [], x = -5 * cnt / 2;
//
for (let i = 0; i < cnt; i++) {
let rnd = Math.random() * cnt - cnt / 2;
//
arr.push({
x: x,
y: a + x * (b + rnd) + rnd
});
//
x += .5 + Math.random() * 10;
}
//
return arr;
}
.wj-flexchart {
height: 600px;
width: 600px;
margin: 10px 0;
}
body {
margin-bottom: 24pt;
}
#plotSelection {
background-color: rgba(85, 85, 85, 0.05);
border: 2px dashed #808080;
position: absolute;
display: block;
left: 0;
top: 0;
pointer-events: none;
visibility: hidden;
}
.wj-flexchart .wj-state-selected {
stroke-width: 20px;
stroke-dasharray: none;
}
(function (global) {
System.config({
transpiler: 'plugin-babel',
babelOptions: {
es2015: true
},
meta: {
'*.css': { loader: 'css' }
},
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
'jszip': 'npm:jszip/dist/jszip.js',
'@mescius/wijmo': 'npm:@mescius/wijmo/index.js',
'@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js',
'@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles',
'@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures',
'@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js',
'@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js',
'@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js',
'@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js',
'@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js',
'@mescius/wijmo.chart.finance.analytics': 'npm:@mescius/wijmo.chart.finance.analytics/index.js',
'@mescius/wijmo.chart.hierarchical': 'npm:@mescius/wijmo.chart.hierarchical/index.js',
'@mescius/wijmo.chart.interaction': 'npm:@mescius/wijmo.chart.interaction/index.js',
'@mescius/wijmo.chart.radar': 'npm:@mescius/wijmo.chart.radar/index.js',
'@mescius/wijmo.chart.render': 'npm:@mescius/wijmo.chart.render/index.js',
'@mescius/wijmo.chart.webgl': 'npm:@mescius/wijmo.chart.webgl/index.js',
'@mescius/wijmo.chart.map': 'npm:@mescius/wijmo.chart.map/index.js',
'@mescius/wijmo.gauge': 'npm:@mescius/wijmo.gauge/index.js',
'@mescius/wijmo.grid': 'npm:@mescius/wijmo.grid/index.js',
'@mescius/wijmo.grid.detail': 'npm:@mescius/wijmo.grid.detail/index.js',
'@mescius/wijmo.grid.filter': 'npm:@mescius/wijmo.grid.filter/index.js',
'@mescius/wijmo.grid.search': 'npm:@mescius/wijmo.grid.search/index.js',
'@mescius/wijmo.grid.grouppanel': 'npm:@mescius/wijmo.grid.grouppanel/index.js',
'@mescius/wijmo.grid.multirow': 'npm:@mescius/wijmo.grid.multirow/index.js',
'@mescius/wijmo.grid.transposed': 'npm:@mescius/wijmo.grid.transposed/index.js',
'@mescius/wijmo.grid.transposedmultirow': 'npm:@mescius/wijmo.grid.transposedmultirow/index.js',
'@mescius/wijmo.grid.pdf': 'npm:@mescius/wijmo.grid.pdf/index.js',
'@mescius/wijmo.grid.sheet': 'npm:@mescius/wijmo.grid.sheet/index.js',
'@mescius/wijmo.grid.xlsx': 'npm:@mescius/wijmo.grid.xlsx/index.js',
'@mescius/wijmo.grid.selector': 'npm:@mescius/wijmo.grid.selector/index.js',
'@mescius/wijmo.grid.cellmaker': 'npm:@mescius/wijmo.grid.cellmaker/index.js',
'@mescius/wijmo.nav': 'npm:@mescius/wijmo.nav/index.js',
'@mescius/wijmo.odata': 'npm:@mescius/wijmo.odata/index.js',
'@mescius/wijmo.olap': 'npm:@mescius/wijmo.olap/index.js',
'@mescius/wijmo.rest': 'npm:@mescius/wijmo.rest/index.js',
'@mescius/wijmo.pdf': 'npm:@mescius/wijmo.pdf/index.js',
'@mescius/wijmo.pdf.security': 'npm:@mescius/wijmo.pdf.security/index.js',
'@mescius/wijmo.viewer': 'npm:@mescius/wijmo.viewer/index.js',
'@mescius/wijmo.xlsx': 'npm:@mescius/wijmo.xlsx/index.js',
'@mescius/wijmo.undo': 'npm:@mescius/wijmo.undo/index.js',
'@mescius/wijmo.interop.grid': 'npm:@mescius/wijmo.interop.grid/index.js',
'@mescius/wijmo.touch': 'npm:@mescius/wijmo.touch/index.js',
'@mescius/wijmo.cloud': 'npm:@mescius/wijmo.cloud/index.js',
'@mescius/wijmo.barcode': 'npm:@mescius/wijmo.barcode/index.js',
'@mescius/wijmo.barcode.common': 'npm:@mescius/wijmo.barcode.common/index.js',
'@mescius/wijmo.barcode.composite': 'npm:@mescius/wijmo.barcode.composite/index.js',
'@mescius/wijmo.barcode.specialized': 'npm:@mescius/wijmo.barcode.specialized/index.js',
'jszip': 'npm:jszip/dist/jszip.js',
'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css',
'css': 'npm:systemjs-plugin-css/css.js',
'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js',
'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.js'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
src: {
defaultExtension: 'js'
},
"node_modules": {
defaultExtension: 'js'
},
}
});
})(this);
