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Code Issues Releases Wiki Activity

Add utility for turning keymaps into characters mappings.

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This commit is contained in:
Simo Kinnunen 2014-02-12 00:09:18 +09:00
parent b6ccc29d0c
commit 1fbaae8d8e
2 changed files with 126 additions and 11 deletions
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117
lib/util/keyutil.js
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@ -3,7 +3,9 @@ var util = require('util')
var adb = require('adbkit')
var Promise = require('bluebird')
module.exports.parseKeyCharacterMap = function(stream) {
var keyutil = module.exports = Object.create(null)
keyutil.parseKeyCharacterMap = function(stream) {
var resolver = Promise.defer()
, state = 'type_t'
, keymap = {
@ -413,6 +415,7 @@ module.exports.parseKeyCharacterMap = function(stream) {
if ((char >= '0' && char <= '9') ||
(char >= 'a' && char <= 'f')) {
lastBehavior.value += parseInt(char, 16)
lastBehavior.value = String.fromCharCode(lastBehavior.value)
state = 'filter_behavior_literal_end'
return true
}
@ -455,3 +458,115 @@ module.exports.parseKeyCharacterMap = function(stream) {
stream.removeListener('end', endListener)
})
}
keyutil.namedKey = function(name) {
var key = adb.Keycode['KEYCODE_' + name]
if (key === void 0) {
throw new Error(util.format('Unknown key "%s"', name))
}
return key
}
keyutil.buildCharMap = function(keymap) {
var charmap = Object.create(null)
keymap.keys.forEach(function(key) {
key.rules.forEach(function(rule) {
var combination = {
key: keyutil.namedKey(key.key)
, modifiers: []
, complexity: 0
}
var shouldHandle = rule.modifiers.every(function(modifier) {
switch (modifier.type) {
case 'label':
return false // ignore
case 'base':
return true
case 'shift':
case 'lshift':
combination.modifiers.push(adb.Keycode.KEYCODE_SHIFT_LEFT)
combination.complexity += 10
return true
case 'rshift':
combination.modifiers.push(adb.Keycode.KEYCODE_SHIFT_RIGHT)
combination.complexity += 10
return true
case 'alt':
case 'lalt':
combination.modifiers.push(adb.Keycode.KEYCODE_ALT_LEFT)
combination.complexity += 20
return true
case 'ralt':
combination.modifiers.push(adb.Keycode.KEYCODE_ALT_RIGHT)
combination.complexity += 20
return true
case 'ctrl':
case 'lctrl':
combination.modifiers.push(adb.Keycode.KEYCODE_CTRL_LEFT)
combination.complexity += 20
return true
case 'rctrl':
combination.modifiers.push(adb.Keycode.KEYCODE_CTRL_RIGHT)
combination.complexity += 20
return true
case 'meta':
case 'lmeta':
combination.modifiers.push(adb.Keycode.KEYCODE_META_LEFT)
combination.complexity += 20
return true
case 'rmeta':
combination.modifiers.push(adb.Keycode.KEYCODE_META_RIGHT)
combination.complexity += 20
return true
case 'sym':
combination.modifiers.push(adb.Keycode.KEYCODE_SYM)
combination.complexity += 10
return true
case 'fn':
combination.modifiers.push(adb.Keycode.KEYCODE_FUNCTION)
combination.complexity += 30
return true
case 'capslock':
combination.modifiers.push(adb.Keycode.KEYCODE_CAPS_LOCK)
combination.complexity += 30
return true
case 'numlock':
combination.modifiers.push(adb.Keycode.KEYCODE_NUM_LOCK)
combination.complexity += 30
return true
case 'scrolllock':
combination.modifiers.push(adb.Keycode.KEYCODE_SCROLL_LOCK)
combination.complexity += 30
return true
}
})
if (!shouldHandle) {
return
}
rule.behaviors.forEach(function(behavior) {
switch (behavior.type) {
case 'literal':
if (!charmap[behavior.value]) {
charmap[behavior.value] = [combination]
}
else {
charmap[behavior.value].push(combination)
// Could be more efficient, but we only have 1-4 combinations
// per key, so we don't really care.
charmap[behavior.value].sort(function(a, b) {
return a.complexity - b.complexity
})
}
break
}
})
})
})
return charmap
}