layout/centerwork.lua

   1 --[[
   2
   3      Licensed under GNU General Public License v2
   4       * (c) 2016,      Henrik Antonsson
   5       * (c) 2015,      Joerg Jaspert
   6       * (c) 2014,      projektile
   7       * (c) 2013,      Luca CPZ
   8       * (c) 2010-2012, Peter Hofmann
   9
  10 --]]
  11
  12 local floor  = math.floor
  13 local screen = screen
  14
  15 local centerwork = {
  16     name         = "centerwork",
  17     horizontal   = { name = "centerworkh" }
  18 }
  19
  20 local function do_centerwork(p, orientation)
  21     local t = p.tag or screen[p.screen].selected_tag
  22     local wa = p.workarea
  23     local cls = p.clients
  24
  25     if #cls == 0 then return end
  26
  27     local c = cls[1]
  28     local g = {}
  29
  30     -- Main column, fixed width and height.
  31     local mwfact          = t.master_width_factor
  32     local mainhei         = floor(wa.height * mwfact)
  33     local mainwid         = floor(wa.width * mwfact)
  34     local slavewid        = wa.width - mainwid
  35     local slaveLwid       = floor(slavewid / 2)
  36     local slaveRwid       = slavewid - slaveLwid
  37     local slavehei        = wa.height - mainhei
  38     local slaveThei       = floor(slavehei / 2)
  39     local slaveBhei       = slavehei - slaveThei
  40     local nbrFirstSlaves  = floor(#cls / 2)
  41     local nbrSecondSlaves = floor((#cls - 1) / 2)
  42
  43     local slaveFirstDim, slaveSecondDim = 0, 0
  44
  45     if orientation == "vertical" then
  46         if nbrFirstSlaves  > 0 then slaveFirstDim  = floor(wa.height / nbrFirstSlaves) end
  47         if nbrSecondSlaves > 0 then slaveSecondDim = floor(wa.height / nbrSecondSlaves) end
  48
  49         g.height = wa.height
  50         g.width  = mainwid
  51
  52         g.x = wa.x + slaveLwid
  53         g.y = wa.y
  54     else
  55         if nbrFirstSlaves  > 0 then slaveFirstDim  = floor(wa.width / nbrFirstSlaves) end
  56         if nbrSecondSlaves > 0 then slaveSecondDim = floor(wa.width / nbrSecondSlaves) end
  57
  58         g.height  = mainhei
  59         g.width = wa.width
  60
  61         g.x = wa.x
  62         g.y = wa.y + slaveThei
  63     end
  64
  65     if g.width  < 1 then g.width  = 1 end
  66     if g.height < 1 then g.height = 1 end
  67
  68     p.geometries[c] = g
  69
  70     -- Auxiliary windows.
  71     if #cls <= 1 then return end
  72     for i = 2,#cls do
  73         local c = cls[i]
  74         local g = {}
  75
  76         local rowIndex = floor(i/2)
  77
  78         if orientation == "vertical" then
  79             if i % 2 == 0 then
  80                 -- left slave
  81                 g.x = wa.x
  82                 g.y = wa.y + (rowIndex-1)*slaveFirstDim
  83
  84                 g.width = slaveLwid
  85
  86                 -- if last slave in left row use remaining space for that slave
  87                 if rowIndex == nbrFirstSlaves then
  88                     g.height = wa.y + wa.height - g.y
  89                 else
  90                     g.height = slaveFirstDim
  91                 end
  92             else
  93                 -- right slave
  94                 g.x = wa.x + slaveLwid + mainwid
  95                 g.y = wa.y + (rowIndex-1)*slaveSecondDim
  96
  97                 g.width = slaveRwid
  98
  99                 -- if last slave in right row use remaining space for that slave
 100                 if rowIndex == nbrSecondSlaves then
 101                     g.height = wa.y + wa.height - g.y
 102                 else
 103                     g.height = slaveSecondDim
 104                 end
 105             end
 106         else
 107             if i % 2 == 0 then
 108                 -- top slave
 109                 g.x = wa.x + (rowIndex-1)*slaveFirstDim
 110                 g.y = wa.y
 111
 112                 g.height = slaveThei
 113
 114                 -- if last slave in top row use remaining space for that slave
 115                 if rowIndex == nbrFirstSlaves then
 116                     g.width = wa.x + wa.width - g.x
 117                 else
 118                     g.width = slaveFirstDim
 119                 end
 120             else
 121                 -- bottom slave
 122                 g.x = wa.x + (rowIndex-1)*slaveSecondDim
 123                 g.y = wa.y + slaveThei + mainhei
 124
 125                 g.height = slaveBhei
 126
 127                 -- if last slave in bottom row use remaining space for that slave
 128                 if rowIndex == nbrSecondSlaves then
 129                     g.width = wa.x + wa.width - g.x
 130                 else
 131                     g.width = slaveSecondDim
 132                 end
 133
 134             end
 135         end
 136
 137         if g.width  < 1 then g.width  = 1 end
 138         if g.height < 1 then g.height = 1 end
 139
 140         p.geometries[c] = g
 141     end
 142 end
 143
 144
 145 function centerwork.horizontal.arrange(p)
 146     return do_centerwork(p, "horizontal")
 147 end
 148
 149 function centerwork.arrange(p)
 150     return do_centerwork(p, "vertical")
 151 end
 152
 153 return centerwork