Image_Border

title: Border for Image around Non Transparent parts layout: demo_page

How do draw a stroke around image with alpha channel?

This demo demonstrate how to use custom filters with Konva framework.

For more information about custom filters take a look into Custom Filter Tutorial.

In this demo we will create custom filter that will draw solid border around image following its contour. Since following contour is a complex thing we will use a hack. So we will use blurred shadow as a border foundation. We will replace transparent/blurred pixels with our solid color that we want for border.

For all available filters go to Filters Documentation.