1 files changed, 129 insertions, 0 deletions
diff --git a/scratch/pad.lua b/scratch/pad.lua
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+---------------------------------------------------------------
+-- Basic scratchpad manager for the awesome window manager
+---------------------------------------------------------------
+-- Coded by: * Adrian C. (anrxc) <anrxc@sysphere.org>
+-- Licensed under the WTFPL version 2
+--   * http://sam.zoy.org/wtfpl/COPYING
+---------------------------------------------------------------
+-- To use this module add:
+--     require("scratch")
+-- to the top of your rc.lua, and call:
+--     scratch.pad.set(c, width, height, sticky, screen)
+-- from a clientkeys binding, and:
+--     scratch.pad.toggle(screen)
+-- from a globalkeys binding.
+--
+-- Parameters:
+--     c      - Client to scratch or un-scratch
+--     width  - Width in absolute pixels, or width percentage
+--              when <= 1 (0.50 (50% of the screen) by default)
+--     height - Height in absolute pixels, or height percentage
+--              when <= 1 (0.50 (50% of the screen) by default)
+--     sticky - Visible on all tags, false by default
+--     screen - Screen (optional), mouse.screen by default
+---------------------------------------------------------------
+
+-- Grab environment
+local awful = require("awful")
+local capi = {
+    mouse = mouse,
+    client = client,
+    screen = screen
+}
+
+-- Scratchpad: basic scratchpad manager for the awesome window manager
+module("scratch.pad")
+
+local scratchpad = {}
+
+-- Toggle a set of properties on a client.
+local function toggleprop(c, prop)
+    c.ontop  = prop.ontop  or false
+    c.above  = prop.above  or false
+    c.hidden = prop.hidden or false
+    c.sticky = prop.stick  or false
+    c.skip_taskbar = prop.task or false
+end
+
+-- Scratch the focused client, or un-scratch and tile it. If another
+-- client is already scratched, replace it with the focused client.
+function set(c, width, height, sticky, screen)
+    local width  = width  or 0.50
+    local height = height or 0.50
+    local sticky = sticky or false
+    local screen = screen or capi.mouse.screen
+
+    local function setscratch(c)
+        -- Scratchpad is floating and has no titlebar
+        awful.client.floating.set(c, true); awful.titlebar.remove(c)
+
+        -- Scratchpad client properties
+        toggleprop(c, {ontop=true, above=true, task=true, stick=sticky})
+
+        -- Scratchpad geometry and placement
+        local screengeom = capi.screen[screen].workarea
+        if width  <= 1 then width  = screengeom.width  * width  end
+        if height <= 1 then height = screengeom.height * height end
+
+        c:geometry({ -- Scratchpad is always centered on screen
+            x = screengeom.x + (screengeom.width  - width)  / 2,
+            y = screengeom.y + (screengeom.height - height) / 2,
+            width = width,      height = height
+        })
+
+        -- Scratchpad should not loose focus
+        c:raise(); capi.client.focus = c
+    end
+
+    -- Prepare a table for storing clients,
+    if not scratchpad.pad then scratchpad.pad = {}
+        -- add unmanage signal for scratchpad clients
+        capi.client.add_signal("unmanage", function (c)
+            if scratchpad.pad[screen] == c then
+                scratchpad.pad[screen] = nil
+            end
+        end)
+    end
+
+    -- If the scratcphad is emtpy, store the client,
+    if not scratchpad.pad[screen] then
+        scratchpad.pad[screen] = c
+        -- then apply geometry and properties
+        setscratch(c)
+    else -- If a client is already scratched,
+        local oc = scratchpad.pad[screen]
+        -- unscratch, and compare it with the focused client
+        awful.client.floating.toggle(oc); toggleprop(oc, {})
+        -- If it matches clear the table, if not replace it
+        if   oc == c then scratchpad.pad[screen] =     nil
+        else scratchpad.pad[screen] = c; setscratch(c) end
+    end
+end
+
+-- Move the scratchpad to the current workspace, focus and raise it
+-- when it's hidden, or hide it when it's visible.
+function toggle(screen)
+    local screen = screen or capi.mouse.screen
+
+    -- Check if we have a client on storage,
+    if scratchpad.pad and
+       scratchpad.pad[screen] ~= nil
+    then -- and get it out, to play
+        local c = scratchpad.pad[screen]
+
+        -- If it's visible on another tag hide it,
+        if c:isvisible() == false then c.hidden = true
+            -- and move it to the current worskpace
+            awful.client.movetotag(awful.tag.selected(screen), c)
+        end
+
+        -- Focus and raise if it's hidden,
+        if c.hidden then
+            awful.placement.centered(c)
+            c.hidden = false
+            c:raise(); capi.client.focus = c
+        else -- hide it if it's not
+            c.hidden = true
+        end
+    end
+end