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 tag       = require("awful.tag")
  14 local tonumber  = tonumber
  15 local math      = { floor = math.floor }
  16
  17 local centerwork = {
  18     name         = "centerwork",
  19     horizontal   = { name = "centerworkh" }
  20 }
  21
  22 local function do_centerwork(p, orientation)
  23     -- Screen.
  24     local wa  = p.workarea
  25     local cls = p.clients
  26
  27     if #cls <= 0 then return end
  28
  29     -- Useless gaps.
  30     local useless_gap = tag.gap or 0
  31
  32     local c = cls[1]
  33     local g = {}
  34
  35     -- Main column, fixed width and height.
  36     local mwfact          = tag.object.get_master_width_factor(t)
  37     local mainhei         = math.floor(wa.height * mwfact)
  38     local mainwid         = math.floor(wa.width * mwfact)
  39     local slavewid        = wa.width - mainwid
  40     local slaveLwid       = math.floor(slavewid / 2)
  41     local slaveRwid       = slavewid - slaveLwid
  42     local slavehei        = wa.height - mainhei
  43     local slaveThei       = math.floor(slavehei / 2)
  44     local slaveBhei       = slavehei - slaveThei
  45     local nbrFirstSlaves  = math.floor(#cls / 2)
  46     local nbrSecondSlaves = math.floor((#cls - 1) / 2)
  47
  48     local slaveFirstDim, slaveSecondDim = 0, 0
  49
  50     if orientation == "vertical" then
  51         if nbrFirstSlaves  > 0 then slaveFirstDim  = math.floor(wa.height / nbrFirstSlaves) end
  52         if nbrSecondSlaves > 0 then slaveSecondDim = math.floor(wa.height / nbrSecondSlaves) end
  53
  54         g.height = wa.height - 2*useless_gap - 2*c.border_width
  55         g.width  = mainwid - 2*c.border_width
  56
  57         g.x = wa.x + slaveLwid
  58         g.y = wa.y + useless_gap
  59     else
  60         if nbrFirstSlaves  > 0 then slaveFirstDim  = math.floor(wa.width / nbrFirstSlaves) end
  61         if nbrSecondSlaves > 0 then slaveSecondDim = math.floor(wa.width / nbrSecondSlaves) end
  62
  63         g.height  = mainhei - 2*c.border_width
  64         g.width = wa.width - 2*useless_gap - 2*c.border_width
  65
  66         g.x = wa.x + useless_gap
  67         g.y = wa.y + slaveThei
  68     end
  69
  70     if g.width  < 1 then g.width  = 1 end
  71     if g.height < 1 then g.height = 1 end
  72
  73     c:geometry(g)
  74
  75     -- Auxiliary windows.
  76     if #cls <= 1 then return end
  77     for i = 2,#cls do
  78         local c = cls[i]
  79         local g = {}
  80
  81         local rowIndex = math.floor(i/2)
  82
  83         if orientation == "vertical" then
  84             if i % 2 == 0 then
  85                 -- left slave
  86                 g.x = wa.x + useless_gap
  87                 g.y = wa.y + useless_gap + (rowIndex-1)*slaveFirstDim
  88
  89                 g.width = slaveLwid - 2*useless_gap - 2*c.border_width
  90
  91                 -- if last slave in left row use remaining space for that slave
  92                 if rowIndex == nbrFirstSlaves then
  93                     g.height = wa.y + wa.height - g.y - useless_gap - 2*c.border_width
  94                 else
  95                     g.height = slaveFirstDim - useless_gap - 2*c.border_width
  96                 end
  97             else
  98                 -- right slave
  99                 g.x = wa.x + slaveLwid + mainwid + useless_gap
 100                 g.y = wa.y + useless_gap + (rowIndex-1)*slaveSecondDim
 101
 102                 g.width = slaveRwid - 2*useless_gap - 2*c.border_width
 103
 104                 -- if last slave in right row use remaining space for that slave
 105                 if rowIndex == nbrSecondSlaves then
 106                     g.height = wa.y + wa.height - g.y - useless_gap - 2*c.border_width
 107                 else
 108                     g.height = slaveSecondDim - useless_gap - 2*c.border_width
 109                 end
 110             end
 111         else
 112             if i % 2 == 0 then
 113                 -- top slave
 114                 g.x = wa.x + useless_gap + (rowIndex-1)*slaveFirstDim
 115                 g.y = wa.y + useless_gap
 116
 117                 g.height = slaveThei - 2*useless_gap - 2*c.border_width
 118
 119                 -- if last slave in top row use remaining space for that slave
 120                 if rowIndex == nbrFirstSlaves then
 121                     g.width = wa.x + wa.width - g.x - useless_gap - 2*c.border_width
 122                 else
 123                     g.width = slaveFirstDim - useless_gap - 2*c.border_width
 124                 end
 125             else
 126                 -- bottom slave
 127                 g.x = wa.x + useless_gap + (rowIndex-1)*slaveFirstDim
 128                 g.y = wa.y + slaveThei + mainhei + useless_gap
 129
 130                 g.height = slaveBhei - 2*useless_gap - 2*c.border_width
 131
 132                 -- if last slave in bottom row use remaining space for that slave
 133                 if rowIndex == nbrSecondSlaves then
 134                     g.width = wa.x + wa.width - g.x - useless_gap - 2*c.border_width
 135                 else
 136                     g.width = slaveSecondDim - useless_gap - 2*c.border_width
 137                 end
 138
 139             end
 140         end
 141
 142         if g.width  < 1 then g.width  = 1 end
 143         if g.height < 1 then g.height = 1 end
 144
 145         c:geometry(g)
 146     end
 147 end
 148
 149
 150 function centerwork.horizontal.arrange(p)
 151     return do_centerwork(p, "horizontal")
 152 end
 153
 154 function centerwork.arrange(p)
 155     return do_centerwork(p, "vertical")
 156 end
 157
 158 return centerwork