[boost] Re: [gui] rectangles and the CSS box model

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2004-12-22 06:43:38

Alan Gutierrez wrote:
>     Actually, now that I think about it, the css box is going to
>     cost a lot if it has actual structures. It is going to need a to
>     return a margin, say by inspecting the margin it was assigned,
>     and if assigned none, return the margin that it inherited. 

There is no reason why it is not possible to implement a simplified box 
model specifically for GUI layouts. The width/height can be calculated 
using get_minimum_size() and area.deflate( margin + padding ). Border is 
not really necessary. As for inheriting, for simplicity, the box model 
will not inherit anything.

If you want to implement a full CSS model (including a CSS device, box 
model, etc.) the library shgould provide enough functionality to allow 
you to do this.

>     In some cases, a division might have been explicitly assigned a
>     border, but in most cases it will choose one based on context.

For sake of simplicity, it would be easier to disregard the border 
property in this context. Otherwise, you need to have border-color and 
border-style as well as border-size and you will also need to actually 
draw the border!

Regards,
Reece