放大&缩小 Angular 不适用于 ngx-image-cropper [英] Zoom in & zoom out in Angular not working for ngx-image-cropper

问题描述

我正在尝试放大 &从 ngx-image-cropper 缩小.我没有收到任何错误，但是当我单击 zoomOut 或 ZoomIn 按钮时，它不起作用.

我在这里做错了什么?

我的 TS 代码

 zoomOut() {this.scale -= .1;this.transform = {...this.transform,规模:this.scale};}放大() {this.scale += .1;this.transform = {...this.transform,规模:this.scale};}

我的 HTML 代码

解决方案

export class AppComponent {缩放:布尔=假；缩小(){this.zoom=false;}放大(){this.zoom=true;}获取高度(){if(this.zoom==true){返回'500px'；//以像素或百分比形式返回您的期望值}别的{返回'200px'；}}}

button{填充:8px；}#测试缩放{高度:500px；宽度:100%；位置:相对；背景:红色；}.zoom-card{高度:500px；宽度:90%；位置:相对；保证金:自动；背景:石灰；}.测试图像{宽度:自动；}

<div class="zoom-card"><img [ngStyle]="{'height':getheight()}" width="auto" class="test-image" src="https://www.netcetra.com/images/howto_images/photoshop-logo.jpg"><br><按钮(点击)="zoomIn()" >放大</button><button (click)="zoomOut()" >缩小</button>

</section>

使用此代码并将其粘贴到 app.component.ts、CSS 和 HTML 文件中.

I am trying for Zoom in & Zoom out from ngx-image-cropper. I am not getting any error but when I click the button zoomOut or ZoomIn it's not working.

What am I doing wrong here?

My TS code

  zoomOut() {
    this.scale -= .1;
    this.transform = {
        ...this.transform,
        scale: this.scale
    };
}

zoomIn() {
    this.scale += .1;
    this.transform = {
        ...this.transform,
        scale: this.scale
    };
}

My HTML code

       <button class="btn zoomIn" (click)="zoomIn()" tooltip="Zoom In" data-toggle="tooltip" data-placement="top" title="Zoom In"></button>
       <button class="btn zoomOut" (click)="zoomOut()" tooltip="Zoom Out" data-toggle="tooltip" data-placement="top" title="Zoom Out"></button>

解决方案

export class AppComponent {  
  zoom:boolean=false;
  zoomOut(){
    this.zoom=false;
  }
  zoomIn(){
    
    this.zoom=true;
  }
  getheight(){
    if(this.zoom==true){
      return '500px';
      //return your desiderd value in pixel or in percentage
    }
    else{
      return '200px';
      }
  }

}

button{
    padding: 8px;
}
#test-zoom{
    height: 500px;
    width: 100%;
    position: relative;
    background: red;
}
.zoom-card{
    height: 500px;
    width: 90%;
    position: relative;
    margin: auto;
    background: lime;
}

.test-image{
    width: auto;
}

<section id="test-zoom">
  <div class="zoom-card">
    <img [ngStyle]="{'height':getheight()}" width="auto" class="test-image" src="https://www.netcetra.com/images/howto_images/photoshop-logo.jpg">
    <br>
    <button (click)="zoomIn()" >Zoom In</button>
    <button (click)="zoomOut()" >Zoom Out</button>

  </div>
</section>

Use this code and paste it into app.component.ts, CSS, and HTML files.

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