OnSizeChanged Method (ImageViewer)

JavaScript
WinRT JavaScript

 function Leadtools.Controls.ImageViewer.onSizeChanged( 
   e 
)

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Parameters

Parameter	Type	Description
e	LeadEventArgs	Event data.

The viewer hooks to standard HTML Window "sizechanged" or "orientationchange" events depending on the browser being used. This will allow the viewer to recalculate the transformation matrix and cause a render if the size of the control (container DIV) changes. If however, the size of the control is changed programmatically or due to CSS rules that do not fire "sizechanged" or "orientationchange", then the control will not be updated. You must call OnSizeChanged to trigger the control to update its transformation.

The control size is stored in ControlSize.

Start with the ImageViewer example, remove all the code inside the example function (search for the // TODO: add example code here comment) and insert the following code:

Open the HTML page in your browser, now when you click the Example button, the size of the container is reduced by half and OnSizeChanged is called to reflect the new size into the viewer.

JavaScript

example: function SiteLibrary_DefaultPage$example(viewer) {
   // Get the container
   var imageViewerDiv = document.getElementById("imageViewerDiv");
   // Change the size to 200 by 200 pixels
   imageViewerDiv.style.width = "200px";
   imageViewerDiv.style.height = "200px";
   // If you comment out the code below, then the viewer will not be in a correct size
   // Inform the viewer of the new size
   viewer.onSizeChanged(null);
},

OnSizeChanged Method (ImageViewer)

Parameters

Reference