Re: font_factor

Johannes wrote:
> On Tue, Jan 08, 2013 at 11:55:42PM +0000, corvid wrote:
> > 
> > I wrote:
> > > In styleengine, we use font_factor for calculation of larger and x-small        
> > > and so forth, but we don't apply it when given an ordinary font size like       
> > > 11px.
> > 
> > Just to double-check: That's not intended behaviour, right?
> > 
> 
> sorry for the delay...
> This is intentional, but we know that there is a usability issue.
> In CSS px, mm, pt etc. define absolute sizes [1].
> So if we want to adhere to the CSS spec strictly I think we can't
> just scale them.
> On the other hand web designers just use px without thinking about
> the implications. Also other browsers allow scaling of those fonts
> afaik.
> I think we have the following options:
> 
> * ignore CSS and apply font_factor also to absolute font sizes
> * implement a zoom feature that displays everything larger (also
>   images etc.
> * check other browsers for more alternatives

Applying font_factor seems much more usable to me.

A zoom feature would be cool, though. I wonder whether there's some
level where we could get cheap and halfway tolerable zooming by
throwing some of fltk's matrix transformation stuff at what we're
drawing.