Re: [ANN] lua-users.org alternative wiki demo

[pierre pracht <pierre.pracht@...>]

Le 18 févr. 08 à 03:36, Peter Sommerfeld a écrit :

> Matt Campbell wrote
> > A nit pick about the style sheet:  Why is the font size for the  
> > body of the page set to 75%? .... Yes, I know that most users don't  
> > change the font size in their browser preferences, but the default  
> > font isn't overly large.
>
> The default font-size on modern browsers is 16 pixel which is  
> overlay large imho, - a waste of space. Screen fonts are usually  
> 12px(75%), 13px(81.25%;) or 14 px (87.5%). I agree that 75% is too  
> small for normal text and should be reserved for  annotations etc. I  
> usually use 81.25% for normal text. That all depends on fonts,  
> colors, line-height etc. but 13 or 14px usually fit.

Blueprint is nice, it take care of typography.

But defaults are way small for a full text content.
In my mind they have set defaults to suite designers.

Anyway, it simple to compute some new values :
in lua :)

   -- Font setting

   -- in % change all font size set 1em value
   data.BASE_FONT_SIZE = content.BASE_FONT_SIZE or 75 --75% = 12px  
with default setting => 1em = 12px

   -- in em (BASE_FONT_SIZE); vertical grid step = LINE_HEIGHT *  
FONT_SIZE
   local DEFAULT_LINE_HEIGHT = content.DEFAULT_LINE_HEIGHT or 1.5 --  
12px*1.5 = 18px
   data.DEFAULT_LINE_HEIGHT = DEFAULT_LINE_HEIGHT
   local DH = DEFAULT_LINE_HEIGHT
   data.DEM = DH.."em"

   -- Take css selector,
   -- font_size in em : multiple of BASE_FONT_SIZE
   -- line_height,margin_bottom : multiple of DEFAULT_LINE_HEIGHT
   -- + extra style string
   local function  
mk_step(css_selector,font_size,line_height,margin_bottom,extra)
     margin_bottom = margin_bottom or 1
     extra = extra or ""
     return css_selector.." {font-size:"..font_size.."em;line- 
height:"..(DH*line_height/font_size)..";margin-bottom:".. 
(DH*margin_bottom/font_size).."em;"..extra.."}\n"
   end

   local function mk_all_step(t)
     local result = {}
     for i,s in pairs(t) do
       table.insert(result,mk_step(i,unpack(s)))
     end
     return table.concat(result)
   end

   -- Take css selector, size multiple of BASE_FONT_SIZE + extra style
   local default_step = {
     h1={ 3   ,2 ,1 ,""},
     h2={ 2   ,2 ,1 ,""},
     h3={ 1.5 ,1 ,1 ,""},
     h4={ 1.2 ,1 ,1 ,""},
     h5={ 1   ,1, 1, "font-weight:bold;"},
     h6={ 1   ,1, 0, "font-weight:bold;"},
     [".small"]={ 0.8, 1 ,1 ,""},
     [".large"]={ 1.2, 1 ,1 ,""},
   }

   if type(content.STEP) == "table" then
      for i,s in pairs(content.STEP) do
         default_step[i] = default_step[i] or {}
         for j,v in ipairs(content.STEP[i]) do
            default_step[i][j] = v
         end
      end
   end

   data.STEP = mk_all_step(default_step)

- pierre