Add screen switching support

README.md

@@ -49,15 +49,16 @@ Using Collision is easy. You just have to hit the arrow keys (`➡` `⬆` `⬇`
 with some modifiers keys. The `Shift` key is usually used for grabbing something
 while the `Control` key is used to max out the effect.
 
-| Modifier 1 | Modifier 2   | Modifier 3 | Effect                                                |
+| Modifier 1 | Modifier 2   |  Modifier 3  | Effect                                                |
-| :--------: | :----------: | :--------: | ----------------------------------------------------- |
+| :--------: | :----------: | :----------: | ----------------------------------------------------- |
-| `Mod4`     |              |            | Move the focus om the tiled layer                     |
+| `Mod4`     |              |              | Move the focus om the tiled layer                     |
-| `Mod4`     |              | `Control`  | Move the focus on the floating layer                  |
+| `Mod4`     |              | `Control`    | Move the focus on the floating layer                  |
-| `Mod4`     | `Shift`      |            | Move a client in the tiled or floating layer          |
+| `Mod4`     | `Shift`      |              | Move a client in the tiled or floating layer          |
-| `Mod4`     | `Shift`      | `Control`  | Move a floating client to the far side of that screen |
+| `Mod4`     | `Shift`      | `Control`    | Move a floating client to the far side of that screen |
-| `Mod4`     | `Mod1 (Alt)` |            | Resize a client relative to the bottom right corner   |
+| `Mod4`     | `Mod1 (Alt)` |              | Resize a client relative to the bottom right corner   |
-| `Mod4`     | `Mod1 (Alt)` | `Shift`    | Resize a client relative to the top left corner       |
+| `Mod4`     | `Mod1 (Alt)` | `Shift`      | Resize a client relative to the top left corner       |
-| `Control`  | `Mod1 (Alt)` |            | Move to the next/previous tag                         |
+| `Control`  | `Mod1 (Alt)` |              | Move to the next/previous tag                         |
+| `Control`  | `Mod4`       | `Mod1 (Alt)` | Move to the next/previous screen                      |
 
 # Using different keys
 

layout.lua

@@ -45,14 +45,16 @@ function module.get_geometry(tag)
   local focus,focus_wrap = capi.client.focus,nil
   for k,c in ipairs (tag:clients()) do
     -- Handle floating client separately
-    local floating = awful.client.floating.get(c)
+    if not c.minimized then
-    if (not floating) and (not l ==  awful.layout.suit.floating) then
+      local floating = awful.client.floating.get(c)
-      cls[#cls+1] = gen_cls(c,results)
+      if (not floating) and (not l ==  awful.layout.suit.floating) then
-      if c == focus then
+        cls[#cls+1] = gen_cls(c,results)
-        focus_wrap = cls[#cls]
+        if c == focus then
+          focus_wrap = cls[#cls]
+        end
+      else
+        flt[#flt+1] = c:geometry()
       end
-    else
-      flt[#flt+1] = c:geometry()
     end
   end
 

screen.lua

@@ -1,24 +1,151 @@
-local capi = {screen=screen,client=client}
+local capi = {screen=screen,client=client,mouse=mouse}
-local wibox = require("wibox")
+local math,table = math,table
-local awful = require("awful")
+local wibox        = require( "wibox"         )
-local cairo        = require( "lgi"          ).cairo
+local awful        = require( "awful"         )
-local color        = require( "gears.color"  )
+local cairo        = require( "lgi"           ).cairo
-local beautiful    = require( "beautiful"    )
+local color        = require( "gears.color"   )
+local beautiful    = require( "beautiful"     )
 local surface      = require( "gears.surface" )
-local pango = require("lgi").Pango
+local pango        = require( "lgi"           ).Pango
-local pangocairo = require("lgi").PangoCairo
+local pangocairo   = require( "lgi"           ).PangoCairo
+
 local module = {}
 
+local wiboxes = {}
+local size  = 100
+local shape = nil
+local pss   = 1
+
+-- Screen order is not always geometrical, sort them
+local function get_first_screen()
+  local ret = {}
+  for i=1,capi.screen.count() do
+    local geom = capi.screen[i].geometry
+    if geom.x == 0 then
+      if #ret == 0 then
+        ret[1] = i
+      elseif geom.x < capi.screen[ret[1]].geometry.x then
+        table.insert(ret,1,i)
+      else
+        for j=1,#ret do
+          if geom.x > capi.screen[ret[j]].geometry.x then
+            table.insert(ret,j,i)
+            break
+          end
+        end
+      end
+    end
+  end
+  return ret
+end
+local screens = get_first_screen()
+
+local function create_text(text)
+  local img = cairo.ImageSurface(cairo.Format.ARGB32, size, size)
+  local cr = cairo.Context(img)
+  cr:set_source(color(text == pss and beautiful.bg_urgent or beautiful.bg_alternate or beautiful.bg_normal))
+  cr:paint()
+  cr:set_source(color(beautiful.fg_normal))
+  cr:set_line_width(6)
+  cr:arc(size/2,size/2,size/2,0,2*math.pi)
+  cr:stroke()
+  local pango_crx = pangocairo.font_map_get_default():create_context()
+  local pango_l = pango.Layout.new(pango_crx)
+  local desc = pango.FontDescription()
+  desc:set_family("Verdana")
+  desc:set_weight(pango.Weight.BOLD)
+  desc:set_size(60 * pango.SCALE)
+  pango_l:set_font_description(desc)
+  pango_l.text = text
+  local geo = pango_l:get_pixel_extents()
+  cr:move_to(((size-geo.width)/2)*.75,0)--(size-geo.height)/2)
+  cr:show_layout(pango_l)
+  return surface(img)
+end
+
+local function create_shape_bounding(wa)
+  local w = wibox{}
+  w.width  = size
+  w.height = size
+  w.x=wa.x+wa.width/2-size/2
+  w.y=wa.y+wa.height/2-size/2
+  w.ontop = true
+  if not shape then
+    shape    = cairo.ImageSurface(cairo.Format.ARGB32, size, size)
+    local cr = cairo.Context(shape)
+    cr:set_source_rgba(0,0,0,0)
+    cr:paint()
+    cr:set_source_rgba(1,1,1,1)
+    cr:arc(size/2,size/2,size/2,0,2*math.pi)
+    cr:fill()
+  end
+  w.shape_bounding = shape._native
+  return w
+end
+
+local function init_wiboxes()
+  if #wiboxes > 0 then return end
+  for s=1, capi.screen.count() do
+    local w = create_shape_bounding(capi.screen[s].geometry)
+    wiboxes[s] = w
+    w:set_widget(wibox.widget.imagebox(create_text(s)))
+  end
+  module.reload()
+  return true
+end
+
+local function next_screen(ss,dir)
+  local scr_index = ss
+  for k,s in ipairs(screens) do
+    if ss == s then
+      scr_index = k
+      break
+    end
+  end
+
+  if dir == "Left" then
+    scr_index = scr_index == 1 and #screens or scr_index - 1
+  elseif rit == "Right" then
+    scr_index = scr_index == #screens and 1 or scr_index+1
+  end
+
+  local geom = capi.screen[scr_index].geometry
+  capi.mouse.coords({x=geom.x+geom.width/2,y=geom.y+geom.height/2})
+
+  return scr_index
+end
+
 function module.display()
-  print("DISPLAT")
+  if #wiboxes == 0 then
+    init_wiboxes()
+  end
 end
 
 function module.hide()
-  print("HIDE")
+  if #wiboxes == 0 then return end
+
+  for s=1, capi.screen.count() do
+    wiboxes[s].visible = false
+  end
 end
 
-function module.reload()
+function module.reload(_,dir)
-  print("RELOAD")
+  local ss,opss = capi.client.focus and capi.client.focus.screen or capi.mouse.screen,pss
+  if dir then
+    ss = next_screen(ss,dir)
+  end
+
+  if pss ~= ss then
+    pss = nil
+    wiboxes[opss]:set_widget(wibox.widget.imagebox(create_text(opss)))
+    pss = ss
+    wiboxes[ss]:set_widget(wibox.widget.imagebox(create_text(ss)))
+  end
+
+  for s=1, capi.screen.count() do
+    wiboxes[s].visible = true
+  end
+  return true
 end
 
 return module