Add function to shrink window to minimum pfx width

Useful for testing Firefox and Picturefix's minimum width.

awesome/.config/awesome/rc.lua

@@ -46,6 +46,13 @@ function new_mail(maildir)
    return count
 end
 
+function shrink_to_picturefix_width()
+   local g = client.focus:geometry()
+
+   awful.client.floating.set(client.focus, true)
+   client.focus:geometry({x = g.x, y = g.y, width = 1066, height = 1060})
+end
+
 -- {{{ Error handling
 -- Check if awesome encountered an error during startup and fell back to
 -- another config (This code will only ever execute for the fallback config)
@@ -346,6 +353,7 @@ globalkeys = awful.util.table.join(
     awful.key({ modkey, "Shift"   }, ",", function () awful.client.movetoscreen(client.focus, -1) end),
     awful.key({ modkey,           }, "u", awful.client.urgent.jumpto),
     awful.key({ modkey,           }, "Tab", hpraise),
+    awful.key({ modkey,           }, "g", shrink_to_picturefix_width),
 
     -- Standard program
     awful.key({ modkey,           }, "Return", function () awful.util.spawn(terminal) end),