LEADTOOLS JavaScript (Leadtools.Controls)
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UpdateImage Method
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| Leadtools.Controls Namespace > ImageViewerItems Object : UpdateImage Method |
function Leadtools.Controls.ImageViewerItems.updateImage( item , image , resolution )
| Parameter | Type | Description |
|---|---|---|
| item | ImageViewerItem | Item to update |
| image | ImageElement | New HTML Image Element. If this is null, then the item will be empty after this method returns. |
| resolution | LeadSizeD | The resolution to use of the image in dots/inch (or DPI). A value of 0,0 or Empty means use the default image resolution which is 96 pixels. |
This method is a shortcut for updating the Image and Resolution properties. It is equivalent to:
item.image = image;
item.resolution = resolution;
UpdateElement is a shortcut for updating not only Image, but also Element and Canvas. Passing a valid HTML Image Element to UpdateElement sets the Image property just as UpdateImage does. Similarly, passing a valid HTML5 Canvas Element to UpdateElement sets the Canvas property just as UpdateCanvas does. The item can have a value in only one of Image, Element or Canvas. Setting one value will automatically delete the values of the others.
var img = new Image(200, 200); this._imageViewer.items.updateImage(this._imageViewer.activeItem, img, lt.LeadSizeD.create(96, 96));