Update Bar Gauge Data at Runtime
Documentation
This demo illustrates how to bind an array of values to the BarGauge. Since an array can not be bound to a field as a regular value, it is bound as a computed one.
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<div class="long-title"><h3>Colors Representation via Basic Colors</h3></div>
<div id="gauge-demo">
<dx-bar-gauge id="gauge"
[values]="getBasicColors(currentColor)"
[startValue]="0"
[endValue]="255"
[palette]="['#ff0000', '#00ff00', '#0000ff']">
<dxo-label [visible]="false"></dxo-label>
</dx-bar-gauge>
<div class="action-container">
<dx-select-box
[width]="150"
[dataSource]="colors"
displayExpr="name"
valueExpr="code"
[(value)]="currentColor">
</dx-select-box>
<div class="color-box" [style.backgroundColor]="currentColor"></div>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxBarGaugeModule, DxSelectBoxModule } from 'devextreme-angular';
import { Color, Service } from './app.service';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
providers: [Service]
})
export class AppComponent {
colors: Color[];
values: number[] = [];
currentColor: string;
constructor(service: Service) {
this.colors = service.getColors();
this.currentColor = this.colors[0].code;
}
getBasicColors(value) {
var code = Number("0x" + value.slice(1));
this.values[0] = (code >> 16) & 0xff;
this.values[1] = (code >> 8) & 0xff;
this.values[2] = code & 0xff;
return this.values;
}
}
@NgModule({
imports: [
BrowserModule,
DxBarGaugeModule,
DxSelectBoxModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #gauge-demo {
height: 440px;
width: 100%;
}
::ng-deep #gauge {
width: 80%;
height: 100%;
margin-top: 20px;
float: left;
}
::ng-deep .action-container {
width: 20%;
text-align: left;
margin-top: 20px;
float: left;
}
::ng-deep .color-box {
width: 40px;
height: 40px;
margin-top: 20px;
}
::ng-deep .long-title h3 {
font-weight: 200;
font-size: 28px;
text-align: center;
margin-bottom: 20px;
}
import {
Injectable
} from '@angular/core';
export class Color {
name: string;
code: string;
}
let colors: Color[] = [{
name: 'Amaranth',
code: '#e52b50'
}, {
name: 'Amethyst',
code: '#9966cc'
}, {
name: 'Ash grey',
code: '#b2beb5'
}, {
name: 'Barn red',
code: '#7c0a02'
}, {
name: 'Imperial',
code: '#602f6b'
}, {
name: 'Lemon lime',
code: '#e3ff00'
}, {
name: 'Mountain Meadow',
code: '#30ba8f'
}, {
name: 'Outer Space',
code: '#414a4c'
}, {
name: 'Persian plum',
code: '#701c1c'
}, {
name: 'Seal brown',
code: '#321414'
}, {
name: 'Twilight lavender',
code: '#8a496b'
}, {
name: 'Umber',
code: '#635147'
}];
@Injectable()
export class Service {
getColors(): Color[] {
return colors;
}
}
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
System.config({
transpiler: 'ts',
typescriptOptions: {
module: "system",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@3.4.5/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs',
'devextreme': 'npm:devextreme@20.1',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.7/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram@1.0.5',
'devexpress-gantt': 'npm:devexpress-gantt@1.0.3',
'devextreme-angular': 'npm:devextreme-angular@20.1'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
},
packageConfigPaths: [
"npm:*/package.json",
"npm:@angular/*/package.json",
"npm:@angular/common/*/package.json",
"npm:rxjs/operators/package.json",
"npm:devextreme-angular@20.1/*/package.json",
"npm:devextreme-angular@20.1/ui/*/package.json",
]
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.4/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app').catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>