Borders

You can assign a border to an object, to have a border drawn around the object. A border can be drawn both behind and in front of the object it's assigned to, which opens up a lot of possibilities for things you can do with the border.

Built in borders

MonoAGS comes with several built in "border styles" which you can use.

Solid Color

A solid color border will be drawn around the object. You can choose the color, the border width, and whether or not to make the corners rounded. You can create a solid border by using the border factory: factory.Graphics.Border.SolidColor(...). By default the border will be drawn in front of the object, but you can change it to be drawn behind the object by setting the DrawBorderBehind property of the border to true.

Gradient Color

A gradient color border will be drawn around the object. This gives you the same choices as the solid color border, only instead of selecting one color, you can select 4 colors, one for each corner of the border. The color along the edges will be interpolated, thus creating the gradient effect. You can create a gradient border by using the border factory: factory.Graphics.Border.Gradient(...).

9-slice Image

This allows you to use an image, slice it to 9 pieces, and spread it in various ways to create a border. This is similar to the customized text window feature that "Classic" AGS currently has, only more powerful and available for all objects, not just for text windows. The 9-slice image border is heavily inspired by the border image used by CSS, so you can look at a CSS example, to see what can be done with a 9-slice image.

Writing your own

You can also implement your custom border if you want. For that you need to implement the IBorderStyle interface which let you write rendering for the back and for the front of the border. Take a look at the existing implementation in the engine code to get an idea of how to render your own border.