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112 lines
3.4 KiB
Lua
112 lines
3.4 KiB
Lua
--- === ControlEscape ===
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---
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--- Adapted very loosely from https://github.com/jasonrudolph/ControlEscape.spoon
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--- Removed timing/delay; always send Escape as well as Control
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---
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--- Make the `control` key more useful: If the `control` key is tapped, treat it
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--- as the `escape` key. If the `control` key is held down and used in
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--- combination with another key, then provide the normal `control` key
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--- behavior.
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local obj={}
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obj.__index = obj
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-- Metadata
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obj.name = 'ControlEscape'
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obj.version = '0.1'
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obj.author = 'Jason Rudolph <jason@jasonrudolph.com>'
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obj.homepage = 'https://github.com/jasonrudolph/ControlEscape.spoon'
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obj.license = 'MIT - https://opensource.org/licenses/MIT'
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function obj:init()
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self.movements = 0
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self.sendEscape = false
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self.lastModifiers = {}
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-- Create an eventtap to run each time the modifier keys change (i.e., each
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-- time a key like control, shift, option, or command is pressed or released)
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self.controlTap = hs.eventtap.new({hs.eventtap.event.types.flagsChanged},
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function(event)
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local newModifiers = event:getFlags()
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-- If this change to the modifier keys does not involve a *change* to the
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-- up/down state of the `control` key (i.e., it was up before and it's
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-- still up, or it was down before and it's still down), then don't take
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-- any action.
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if self.lastModifiers['ctrl'] == newModifiers['ctrl'] then
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return false
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end
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-- Control was not down but is now
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if not self.lastModifiers['ctrl'] then
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self.lastModifiers = newModifiers
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if (not self.lastModifiers['cmd'] and not self.lastModifiers['alt']) then
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self.sendEscape = true
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self.movements = 0
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end
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-- Control was down and is up, hasn't been blocked by another key, and
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-- isn't above the movement threshold
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elseif (self.sendEscape == true and not newModifiers['ctrl'] and self.movements < 20) then
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self.lastModifiers = newModifiers
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-- Allow for shift-escape
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if newModifiers['shift'] then
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hs.eventtap.keyStroke({'shift'}, 'escape', 0)
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else
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hs.eventtap.keyStroke(newModifiers, 'escape', 0)
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end
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self.sendEscape = false
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self.movements = 0
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else
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self.lastModifiers = newModifiers
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end
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end
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)
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-- If any other key is pressed, don't send escape
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self.asModifier = hs.eventtap.new({hs.eventtap.event.types.keyDown},
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function(event)
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self.sendEscape = false
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end
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)
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-- If mouse is moving significantly, don't send escape
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self.scrolling = hs.eventtap.new({hs.eventtap.event.types.gesture},
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function(event)
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local touches = event:getTouches()
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local i, v = next(touches, nil)
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while i do
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if v["phase"] == "moved" then
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-- Increment the movement counter
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self.movements = self.movements + 1
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end
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i, v = next(touches, i) -- get next index
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end
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end
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)
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end
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--- ControlEscape:start()
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--- Method
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--- Start sending `escape` when `control` is pressed and released in isolation
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function obj:start()
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self.controlTap:start()
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self.asModifier:start()
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self.scrolling:start()
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end
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--- ControlEscape:stop()
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--- Method
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--- Stop sending `escape` when `control` is pressed and released in isolation
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function obj:stop()
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-- Stop monitoring keystrokes
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self.controlTap:stop()
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self.asModifier:stop()
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self.scrolling:stop()
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-- Reset state
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self.sendEscape = false
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self.lastModifiers = {}
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end
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return obj
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