In previous article, I have written Angular 2 Directive for mouse wheel scroll. Here in this example we will use that directive. So please read previous article before going through this example.
Source Code         DEMO

Program Flow

  1. Width of the image can be manipulated by [style.width] pre-defined directive. Initialise width for the image as imgWidth = 300
  2. On Mouse scroll up increment imgWidth by 10 and assign to imgWidth
  3. On Mouse scroll down decrement imgWidth by 10 and assign to imgWidth

Markup

<img mouseWheel [style.width]="imgWidth" src="sample.png" (mouseWheelUp)="mouseWheelUpFunc()" (mouseWheelDown)="mouseWheelDownFunc()"/>

app.component.ts

When user scrolls upward, mouseWheelUpFunc will be called. If user scrolls downward, mouseWheelDownFunc will be called. 
import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
    <h2>Mouse wheel scroll on below image</h2>
    <img mouseWheel [style.width]="imgWidth" src="sample.png" (mouseWheelUp)="mouseWheelUpFunc()" (mouseWheelDown)="mouseWheelDownFunc()"/>
  `
})
export class AppComponent {
  mouseWheelDir: string = '';
  imgWidth: number = 300;

  mouseWheelUpFunc() {
    console.log('mouse wheel up');
    this.imgWidth = this.imgWidth+10;
  }

  mouseWheelDownFunc() {
    console.log('mouse wheel down');
    this.imgWidth = this.imgWidth-10;
  }
}

app.module.ts

Now include mouseWheelDirective in app module.  
import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { MouseWheelDirective } from './mousewheel.directive';

@NgModule({
  imports:      [ BrowserModule ],
  declarations: [ AppComponent, MouseWheelDirective ],
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

3 comments:

  1. Such news should be made more widely available.
    anal fingering

    ReplyDelete
  2. Excellent https://payforessay.net/pay-for-resume service! If you are using this service for the first time, do not hesitate to contact support managers. They will help and guide you no matter how complex your paper is and if you have any questions they will be super fast to respond. I have recently received outstanding papers on Accounting and Management. Nice structure, language and general impression. Keep up the good work!

    ReplyDelete

Blogroll

Follow this blog by Email

Popular Posts