Library got a large bunch of updates and upgrades since last version and i today i will tell about the main one – new Nine-patch editor and styling hidden within the library. 
First of all i will tell a bit about nine-patch format for those who still don’t know anything…

Nine-patch

Nine-patch is an image format that holds some additional information inside png-format image meta-data or inside the picture itself.

Here you can see a simple example of nine-patch image (it is also set as default image in editor):

As you can see there are four black-colored lines on the image sides – that is additional data that nine-patch format provides.
Each line on the left and top sides presents stretchable image areas – those parts of image will be sized with the component they are used on.
Each line on the right and bottom sides presents content areas (they might also be empty) – in those parts of image component content will be placed (for example – button text and icon).

That is basically all you need to know about that format to make it useful inside you application with WebLookAndFeel library!
If you want to know more – you might find this post and official Android dev guide useful.

I will tell you about nine-patch files usage a bit later – let’s check the format editor first…

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