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Zooming for ejs-diagram

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150782 Jan 20,2020 05:49 AM UTC Jan 22,2020 07:14 AM UTC Angular - EJ 2 3
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Tags: Diagram
SaiSravya
Asked On January 20, 2020 05:49 AM UTC

I want to enable zooming option for ejs-diagram


The zooming which you provided is as below


It is with ejs-chart

I need to do the same for ejs-diagram


Please help me on this... 

Shyam G [Syncfusion]
Replied On January 21, 2020 06:36 AM UTC

Hi SaiSravya, 

By default, the Zooming is enabled in the diagram. We need not set any properties to enable the zooming in the diagram. To disable the zoom initially, we should remove DiagramConstraints Zoom from the Default. Also, we can use zoomTo method to perform zoom operations at runtime. Please refer to a code example below. 

Code example: 
//disable zoom initially 
public constraints: DiagramConstraints = DiagramConstraints.Default &~DiagramConstraints.Zoom;   

  
//zoom operation at runtime 
ZoomIn() { 
    let zoomOptions: ZoomOptions = { 
      type: "ZoomIn", 
      //Sets the factor by which we can zoom in or zoom out 
      zoomFactor: 0.5 
    } 
    //zoomin the diagram 
    this.diagram.zoomTo(zoomOptions) 
 
  } 
 
  ZoomOut() { 
    let zoomOptions: ZoomOptions = { 
      type: "ZoomOut", 
      //Sets the factor by which we can zoom in or zoom out 
      zoomFactor: 0.5 
    } 
    //zoomout the diagram 
    this.diagram.zoomTo(zoomOptions) 
  } 


Regards, 
Shyam G 


SaiSravya
Replied On January 21, 2020 12:57 PM UTC

Do we need to import [zoomSettings] function to html?


If yes, Please share the details

Shyam G [Syncfusion]
Replied On January 22, 2020 07:14 AM UTC

Hi SaiSravya, 

No, we need not import any function to html. 

Regards, 
Shyam G 


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