split nixos from darwin

required because they don't share all attributes

darwin/hammerspoon/Spoons/ControlEscape.spoon/init.lua

@@ -0,0 +1,112 @@
+--- === ControlEscape ===
+---
+--- Adapted very loosely from https://github.com/jasonrudolph/ControlEscape.spoon
+--- Removed timing/delay; always send Escape as well as Control
+---
+--- Make the `control` key more useful: If the `control` key is tapped, treat it
+--- as the `escape` key. If the `control` key is held down and used in
+--- combination with another key, then provide the normal `control` key
+--- behavior.
+
+local obj = {}
+obj.__index = obj
+
+-- Metadata
+obj.name = "ControlEscape"
+obj.version = "0.1"
+obj.author = "Jason Rudolph <jason@jasonrudolph.com>"
+obj.homepage = "https://github.com/jasonrudolph/ControlEscape.spoon"
+obj.license = "MIT - https://opensource.org/licenses/MIT"
+
+function obj:init()
+    self.movements = 0
+    self.sendEscape = false
+    self.lastModifiers = {}
+
+    -- Create an eventtap to run each time the modifier keys change (i.e., each
+    -- time a key like control, shift, option, or command is pressed or released)
+    self.controlTap = hs.eventtap.new({ hs.eventtap.event.types.flagsChanged }, function(event)
+        local newModifiers = event:getFlags()
+
+        -- If this change to the modifier keys does not involve a *change* to the
+        -- up/down state of the `control` key (i.e., it was up before and it's
+        -- still up, or it was down before and it's still down), then don't take
+        -- any action.
+        if self.lastModifiers["ctrl"] == newModifiers["ctrl"] then
+            return false
+        end
+
+        -- Control was not down but is now
+        if not self.lastModifiers["ctrl"] then
+            -- Only prepare to send escape if no other modifier keys are in use
+            self.lastModifiers = newModifiers
+            if not self.lastModifiers["cmd"] and not self.lastModifiers["alt"] then
+                self.sendEscape = true
+                self.movements = 0
+            end
+
+            -- Control was down and is up, hasn't been blocked by another key, and
+            -- isn't above the movement threshold
+        elseif self.sendEscape == true and not newModifiers["ctrl"] and self.movements < 30 then
+            self.lastModifiers = newModifiers
+
+            -- Allow for shift-escape
+            if newModifiers["shift"] then
+                hs.eventtap.keyStroke({ "shift" }, "escape", 0)
+            else
+                hs.eventtap.keyStroke(newModifiers, "escape", 0)
+            end
+            self.sendEscape = false
+            self.movements = 0
+            self.numberOfCharacters = 0
+
+            -- Control was down and is up, but isn't ready to send escape
+        else
+            self.lastModifiers = newModifiers
+        end
+    end)
+
+    -- If any other key is pressed, don't send escape
+    self.asModifier = hs.eventtap.new({ hs.eventtap.event.types.keyDown }, function(_)
+        self.sendEscape = false
+        -- print("Don't sent escape")
+    end)
+
+    -- If mouse is moving significantly, don't send escape
+    self.scrolling = hs.eventtap.new({ hs.eventtap.event.types.gesture }, function(event)
+        local touches = event:getTouches()
+        local i, v = next(touches, nil)
+        while i do
+            if v["phase"] == "moved" then
+                -- Increment the movement counter
+                self.movements = self.movements + 1
+            end
+            i, v = next(touches, i) -- get next index
+        end
+    end)
+end
+
+--- ControlEscape:start()
+--- Method
+--- Start sending `escape` when `control` is pressed and released in isolation
+function obj:start()
+    self.controlTap:start()
+    self.asModifier:start()
+    self.scrolling:start()
+end
+
+--- ControlEscape:stop()
+--- Method
+--- Stop sending `escape` when `control` is pressed and released in isolation
+function obj:stop()
+    -- Stop monitoring keystrokes
+    self.controlTap:stop()
+    self.asModifier:stop()
+    self.scrolling:stop()
+
+    -- Reset state
+    self.sendEscape = false
+    self.lastModifiers = {}
+end
+
+return obj