awesome/docs/17-porting-tips.md

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# Tips for upgrading your configuration
<a name="v4"></a>
## From 3.5 to 4.0
The
**best advice is to start from the default `rc.lua` and backport any changes**
you might have added to your `rc.lua`.
This avoids most of the possible errors due to missing important changes.
If you still wish to ignore this advice, first read the
<a href="89-NEWS.md.html#v4">NEWS</a> section about the breaking changes. This
document assumes you did.
Be warned, even if it looks like it's working after changing some lines, **it wont
supports dynamic screen changes and will have many subtle bugs**. The changes
mentioned below **are important for the stability of your window manager**.
Here is a diff of the 3.5.9 `rc.lua` with the 4.0 one. All changes due to
new features and new syntaxes have been removed. A `-` in front of the line
correspond to content of the 3.5 `rc.lua` and `+` its replacement in 4.0.
This document does not cover the new features added in the Awesome 4 `rc.lua`,
it only covers the minimal required changes to have a properly behaving config.
To test during the port, we recommend the `Xephyr` X11 server.
If Awesome4 **is not installed yet**, we recommand to install it in its own
prefix to avoid conflicts in case you wish to stay on 3.5 for a little
longer:
cd path/to/awesome/code
mkdir -p $HOME/.config/awesome4
mkdir build -p
cd build
# Install in a local folder, this assumes all the dependencies are installed
cmake -DCMAKE_INSTALL_PREFIX=$HOME/awesome4_test ..
make -j4
# Use a copy of rc.lua to avoid it being overwritten accidentally
cp awesomerc.lua $HOME/.config/awesome4/rc.lua
make install
# Start Awesome in a 1280x800 window
Xephyr :1 -screen 1280x800 &
DISPLAY=:1 $HOME/awesome4_test/bin/awesome \
-c $HOME/.config/awesome4/rc.lua \
--search $HOME/awesome4_test/share/awesome/lib
If Awesome 4 is **already installed**, then backup your old `rc.lua` and overwrite
`~/.config/awesome/rc.lua` (replace this by another path if you use a custom
XDH config local directory). And only execute:
Xephyr :1 -screen 1280x800 &
DISPLAY=:1 awesome
Screens are now added and removed without reloading `rc.lua`. The wallpaper are
now set in a signal callback.
--- {{{ Wallpaper
-if `beautiful.wallpaper` then
- for s = 1, screen.count() do
- `gears.wallpaper.maximized`(beautiful.wallpaper, s, true)
- end
-end
--- }}}
+local function set_wallpaper(s)
+ -- Wallpaper
+ if `beautiful.wallpaper` then
+ local wallpaper = `beautiful.wallpaper`
+ -- If wallpaper is a function, call it with the screen
+ if type(wallpaper) == "function" then
+ wallpaper = wallpaper(s)
+ end
+ `gears.wallpaper.maximized`(wallpaper, s, true)
+ end
+end
+
+-- Re-set wallpaper when a screen's geometry changes (e.g. different resolution)
+`screen.connect_signal`("property::geometry", set_wallpaper)
Tags need to be created for each screens, the old static initialization cannot
work. Remove this section.
--- {{{ Tags
--- Define a tag table which hold all screen tags.
-tags = {}
-for s = 1, `screen.count`() do
- -- Each screen has its own tag table.
- tags[s] = awful.tag({ 1, 2, 3, 4, 5, 6, 7, 8, 9 }, s, layouts[1])
- end
--- }}}
The textclock is now part of the `wibox` library, rename it.
-- {{{ Wibar
-- Create a textclock widget
-mytextclock = `awful.widget.textclock`()
+mytextclock = `wibox.widget.textclock`()
Widgets were previously added to static global tables. This isn't going to
behave correctly when screen are added and removed. Remove this section.
-- Create a wibox for each screen and add it
-mywibox = {}
-mypromptbox = {}
-mylayoutbox = {}
-mytaglist = {}
-mytasklist = {}
Many functions have been converted to methods. The old functions are deprecated,
they are still supported, but will be removed in the next release.
-mytaglist.buttons = awful.util.table.join(
+local taglist_buttons = awful.util.table.join(
- awful.button({ }, 1, `awful.tag.viewonly`),
+ awful.button({ }, 1, function(t) t:`view_only`() end),
- awful.button({ modkey }, 1, `awful.client.movetotag`),
+ awful.button({ modkey }, 1, function(t)
+ if `client.focus` then
+ `client.focus:move_to_tag`(t)
+ end
+ end),
`awful.button`({ }, 3, `awful.tag.viewtoggle`),
- `awful.button`({ modkey }, 3, `awful.client.toggletag`),
+ `awful.button`({ modkey }, 3, function(t)
+ if client.focus then
+ client.focus:toggle_tag(t)
+ end
+ end),
- `awful.button`({ }, 4, function(t) `awful.tag.viewnext`(awful.tag.getscreen(t)) end),
- `awful.button`({ }, 5, function(t) `awful.tag.viewprev`(awful.tag.getscreen(t)) end)
+ `awful.button`({ }, 4, function(t) `awful.tag.viewnext`(t.screen) end),
+ `awful.button`({ }, 5, function(t) `awful.tag.viewprev`(t.screen) end)
)
-mytasklist.buttons = awful.util.table.join(
+local tasklist_buttons = awful.util.table.join(
awful.button({ }, 1, function (c)
if c == `client.focus` then
c.minimized = true
-- Without this, the following
-- :isvisible() makes no sense
c.minimized = false
- if not c:isvisible() then
- `awful.tag.viewonly`(c:tags()[1])
+ if not c:isvisible() and c.`first_tag` then
+ c.first_tag:view_only()
end
-- This will also un-minimize
-- the client, if needed
c:raise()
end
end),
This section is **very important**. This is where adding and removing screens is
handled (including during startup). Note that the `mysomething` table
previously removed are replaced by custom screens attributes.
-for s = 1, `screen.count`() do
+`awful.screen.connect_for_each_screen`(function(s)
+ -- Wallpaper
+ set_wallpaper(s)
+
+ -- Each screen has its own tag table.
+ awful.tag({ "1", "2", "3", "4", "5", "6", "7", "8", "9" }, s, awful.layout.layouts[1])
+
-- Create a promptbox for each screen
- mypromptbox[s] = `awful.widget.prompt`()
+ s.mypromptbox = `awful.widget.prompt`()
-- Create an imagebox widget which will contains an icon indicating which layout we're using.
-- We need one layoutbox per screen.
- mylayoutbox[s] = `awful.widget.layoutbox`(s)
+ s.mylayoutbox = `awful.widget.layoutbox`(s)
- mylayoutbox[s]:buttons(`awful.util.table.join`(
+ s.mylayoutbox:buttons(`awful.util.table.join`(
`awful.button`({ }, 1, function () `awful.layout.inc`( 1) end),
`awful.button`({ }, 3, function () `awful.layout.inc`(-1) end),
`awful.button`({ }, 4, function () `awful.layout.inc`( 1) end),
`awful.button`({ }, 5, function () `awful.layout.inc`(-1) end)))
-- Create a taglist widget
- mytaglist[s] = `awful.widget.taglist`(s, `awful.widget.taglist.filter.all`, mytaglist.buttons)
+ s.mytaglist = `awful.widget.taglist`(s, `awful.widget.taglist.filter.all`, taglist_buttons)
-- Create a tasklist widget
- mytasklist[s] = `awful.widget.tasklist`(s, `awful.widget.tasklist.filter.currenttags`, mytasklist.buttons)
+ s.mytasklist = `awful.widget.tasklist`(s, `awful.widget.tasklist.filter.currenttags`, tasklist_buttons)
-- Create the wibox
- mywibox[s] = `awful.wibox`({ position = "top", screen = s })
+ s.mywibox = `awful.wibar`({ position = "top", screen = s })
-- Widgets that are aligned to the left
local left_layout = wibox.layout.fixed.horizontal()
- left_layout:add(mylauncher)
- left_layout:add(mytaglist[s])
- left_layout:add(mypromptbox[s])
+ left_layout:add(s.mytaglist)
+ left_layout:add(s.mypromptbox)
-- Widgets that are aligned to the right
local right_layout = wibox.layout.fixed.horizontal()
- if s == 1 then right_layout:add(wibox.widget.systray()) end
+ right_layout:add(wibox.widget.systray())
right_layout:add(mytextclock)
- right_layout:add(mylayoutbox[s])
+ right_layout:add(s.mylayoutbox)
-- Now bring it all together (with the tasklist in the middle)
local layout = wibox.layout.align.horizontal()
layout:set_left(left_layout)
- layout:set_middle(mytasklist[s])
+ layout:set_middle(s.mytasklist)
layout:set_right(right_layout)
- mywibox[s]:set_widget(layout)
+ s.mywibox:set_widget(layout)
end)
-- }}}
`awful.util.spawn` is now called `awful.spawn`.
-- Standard program
- `awful.key`({ modkey, }, "Return", function () `awful.util.spawn`(terminal) end),
+ `awful.key`({ modkey, }, "Return", function () `awful.spawn`(terminal) end),
Another dynamic screen related changes.
-- Prompt
- awful.key({ modkey }, "r", function () mypromptbox[mouse.screen]:run() end),
+ awful.key({ modkey }, "r", function () `awful.screen.focused`().mypromptbox:run() end),
`awful.prompt` now uses a more future proof arguments table instead of many
optional arguments.
awful.key({ modkey }, "x",
function ()
- `awful.prompt.run`({ prompt = "Run Lua code: " },
- mypromptbox[mouse.screen].widget,
- `awful.util.eval`, nil,
- `awful.util.getdir`("cache") .. "/history_eval")
- end),
+ awful.prompt.run {
+ prompt = "Run Lua code: ",
+ textbox = `awful.screen.focused`().mypromptbox.widget,
+ exe_callback = `awful.util.eval`,
+ history_path = `awful.util.get_cache_dir`() .. "/history_eval"
+ }
+ end),
Another function-to-method API change:
- `awful.key`({ modkey, }, "o", `awful.client.movetoscreen` ),
+ `awful.key`({ modkey, }, "o", function (c) c:`move_to_screen`() end),
The `mod4+[1-9]` keybindings also have some changes related to deprecated
functions.
-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it works on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, 9 do
-- View tag only.
awful.key({ modkey }, "#" .. i + 9,
function ()
- local screen = `mouse.screen`
- local tag = `awful.tag.gettags`(screen)[i]
+ local screen = `awful.screen.focused`()
+ local tag = `screen.tags`[i]
if tag then
- `awful.tag.viewonly`(tag)
+ `tag:view_only`()
end
end),
- -- Toggle tag.
+ -- Toggle tag display.
awful.key({ modkey, "Control" }, "#" .. i + 9,
function ()
- local screen = `mouse.screen`
- local tag = `awful.tag.gettags`(screen)[i]
+ local screen = `awful.screen.focused`()
+ local tag = `screen.tags`[i]
if tag then
`awful.tag.viewtoggle`(tag)
end
for i = 1, 9 do
awful.key({ modkey, "Shift" }, "#" .. i + 9,
function ()
if client.focus then
- local tag = `awful.tag.gettags`(client.focus.screen)[i]
+ local tag = `client.focus.screen.tags`[i]
if tag then
- `awful.client.movetotag`(tag)
+ `client.focus:move_to_tag`(tag)
end
end
end),
- -- Toggle tag.
+ -- Toggle tag on focused client.
awful.key({ modkey, "Control", "Shift" }, "#" .. i + 9,
function ()
if client.focus then
- local tag = `awful.tag.gettags`(client.focus.screen)[i]
+ local tag = `client.focus.screen.tags`[i]
if tag then
- `awful.client.toggletag`(tag)
+ `client.focus:toggle_tag`(tag)
end
end
- end))
+ end),
+ )
end
The default rules need to be changed to avoid having offscreen clients:
awful.rules.rules = {
-- All clients will match this rule.
{ rule = { },
properties = { border_width = beautiful.border_width,
awful.rules.rules = {
focus = awful.client.focus.filter,
raise = true,
keys = clientkeys,
+ buttons = clientbuttons,
+ screen = `awful.screen.preferred`,
+ placement = `awful.placement.no_overlap`+`awful.placement.no_offscreen`
The `tags` global table has been removed to support dynamic screens, you can
now access tags by name.
- -- properties = { tag = tags[1][2] } },
+ -- properties = { screen = 1, tag = "2" } },