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data/openos/lib/keyboard.lua

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+local keyboard = {pressedChars = {}, pressedCodes = {}}
+
+-- these key definitions are only a subset of all the defined keys
+-- __index loads all key data from /lib/tools/keyboard_full.lua (only once)
+-- new key metadata should be added here if required for boot
+keyboard.keys = {
+  c               = 0x2E,
+  d               = 0x20,
+  q               = 0x10,
+  w               = 0x11,
+  back            = 0x0E, -- backspace
+  delete          = 0xD3,
+  down            = 0xD0,
+  enter           = 0x1C,
+  home            = 0xC7,
+  lcontrol        = 0x1D,
+  left            = 0xCB,
+  lmenu           = 0x38, -- left Alt
+  lshift          = 0x2A,
+  pageDown        = 0xD1,
+  rcontrol        = 0x9D,
+  right           = 0xCD,
+  rmenu           = 0xB8, -- right Alt
+  rshift          = 0x36,
+  space           = 0x39,
+  tab             = 0x0F,
+  up              = 0xC8,
+  ["end"]         = 0xCF,
+  numpadenter     = 0x9C,
+}
+
+-------------------------------------------------------------------------------
+
+function keyboard.isAltDown()
+  return keyboard.pressedCodes[keyboard.keys.lmenu] or keyboard.pressedCodes[keyboard.keys.rmenu]
+end
+
+function keyboard.isControl(char)
+  return type(char) == "number" and (char < 0x20 or (char >= 0x7F and char <= 0x9F))
+end
+
+function keyboard.isControlDown()
+  return keyboard.pressedCodes[keyboard.keys.lcontrol] or keyboard.pressedCodes[keyboard.keys.rcontrol]
+end
+
+function keyboard.isKeyDown(charOrCode)
+  checkArg(1, charOrCode, "string", "number")
+  if type(charOrCode) == "string" then
+    return keyboard.pressedChars[utf8 and utf8.codepoint(charOrCode) or charOrCode:byte()]
+  elseif type(charOrCode) == "number" then
+    return keyboard.pressedCodes[charOrCode]
+  end
+end
+
+function keyboard.isShiftDown()
+  return keyboard.pressedCodes[keyboard.keys.lshift] or keyboard.pressedCodes[keyboard.keys.rshift]
+end
+
+-------------------------------------------------------------------------------
+
+require("package").delay(keyboard.keys, "/lib/core/full_keyboard.lua")
+
+return keyboard