layout/centerwork.lua

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