docs » hs.window.layout
WARNING: EXPERIMENTAL MODULE. DO NOT USE IN PRODUCTION.
This module is for testing purposes only. It can undergo breaking API changes or go away entirely at any point and without notice.
(Should you encounter any issues, please feel free to report them on https://github.com/Hammerspoon/hammerspoon/issues
or #hammerspoon on irc.freenode.net)
Windowlayouts work by selecting certain windows via windowfilters and arranging them onscreen according to specific rules.
A layout is composed of a list of rules and, optionally, a screen arrangement definition.
Rules within a layout are evaluated in order; once a window is acted upon by a rule, subsequent rules will not affect it further.
A rule needs a windowfilter, producing a dynamic list of windows (the "window pool") to which the rule is applied,
and a list of commands, evaluated in order.
A command acts on one or more of the windows, and is composed of:
- an action, it can be
move: moves the window(s) to a specified onscreen rect (if the action is omitted,
move is assumed)
fit: tiles the windows onto a specified rect, using
preserveRelativeArea parameter will be set to true
unhide: hides or unhides the window's application (like when using cmd-h)
- a maxn number, indicating how many windows from this rule's window pool will be affected (at most) by this command;
if omitted (or if explicitly the string
all) all the remaining windows will be processed by this command; processed
windows are "consumed" and are excluded from the window pool for subsequent commands in this rule, and from subsequent rules
- a selector, describing the sort order used to pick the first maxn windows from the window pool for this command;
it can be one of
focused (pick maxn most recently focused windows),
newest (most recently created),
(least recently created), or
closest (pick the maxn windows that are closest to the destination rect); if omitted,
closest for move, tile and fit, and
newest for everything else
hs.geometry size (only valid for tile and fit) indicating the desired optimal aspect ratio for the tiled windows;
if omitted, defaults to 1x1 (i.e. square windows)
- for move, tile and fit, an
hs.geometry rect, or a unit rect plus a screen hint (for
indicating the destination rect for the command
- for fullscreen and maximize, a screen hint indicating the desired screen; if omitted, uses the window's current screen
You should place higher-priority rules (with highly specialized windowfilters) first, and "fallback" rules
(with more generic windowfilters) last; similarly, within a rule, you should have commands for the more "important"
(i.e. relevant to your current workflow) windows first (move, maximize...) and after that deal with less prominent
windows, if any remain, e.g. by placing them out of the way (minimize).
hide, if used, should usually go into their own rules (with a windowfilter that allows invisible windows
unhide) that come before other rules that deal with actual window placement - unlike the other actions,
they don't "consume" windows making them unavailable for subsequent rules, as they act on applications.
In order to avoid dealing with deeply nested maps, you can define a layout in your scripts via a list, where each element
(or row) denotes a rule; in turn every rule can be a simplified list of two elements:
- a windowfilter or a constructor argument table for one (see
- a single string containing all the commands (action and parameters) in order; actions and selectors can be shortened to
3 characters; all tokens must be separated by spaces (do not use spaces inside
hs.geometry constructor strings);
for greater clarity you can separate commands with
| (pipe character)
Some command string examples:
"move 1 [0,0,50,50] -1,0" moves the closest window to the topleft quadrant of the left screen
"max 0,0" maximizes all the windows onto the primary screen, one on top of another
"move 1 foc [0,0,30,100] 0,0 | tile all foc [30,0,100,100] 0,0" moves the most recently focused window to the left third,
and tiles the remaining windows onto the right side, keeping the most recently focused on top and to the left
"1 new [0,0,50,100] 0,0 | 1 new [50,0,100,100] 0,0 | min" divides the primary screen between the two newest windows
and minimizes any other windows
Each layout can work in "passive" or "active" modes; passive layouts must be triggered manually (via
hs.menubar, etc.) while active layouts continuously keep their rules enforced (see
for more information); in general you should avoid having multiple active layouts targeting the same windows, as the
results will be unpredictable (if such a situation is detected, you'll see an error in the Hammerspoon console); you
can have multiple active layouts, but be careful to maintain a clear "separation of concerns" between their respective windowfilters.
Each layout can have an associated screen configuration; if so, the layout will only be valid while the current screen
arrangement satisfies it; see
hs.window.layout:setScreenConfiguration() for more information.