Added the scancode->KeyEvent.Key mapping table.

events_notdarwin.go

@@ -0,0 +1,72 @@
+// +build !darwin
+// Mac OS X uses its own set of position-independent key codes
+
+// 29 march 2014
+
+package ui
+
+/*
+For position independence across international keyboard layouts, typewriter keys are read using scancodes (which are always set 1).
+Windows provides the scancodes directly in the LPARAM.
+GTK+ provides the scancodes directly from the underlying window system via GdkEventKey.hardware_keycode.
+On X11, this is scancode + 8 (because X11 keyboard codes have a range of [8,255]).
+Wayland is guaranteed to give the same result (thanks ebassi in irc.gimp.net/#gtk+).
+On Linux, where evdev is used instead of polling scancodes directly from the keyboard, evdev's typewriter section key code constants are the same as scancodes anyway, so the rules above apply.
+Typewriter section scancodes are the same across international keyboards with some exceptions that have been accounted for (see KeyEvent's documentation); see http://www.quadibloc.com/comp/scan.htm for details.
+Non-typewriter keys can be handled safely using constants provided by the respective backend API.
+*/
+
+// use uintptr to be safe; the size of the scancode/hardware key code field on each platform is different
+var scancodeMap = map[uintptr]byte{
+	0x02:	'1',
+	0x03:	'2',
+	0x04:	'3',
+	0x05:	'4',
+	0x06:	'5',
+	0x07:	'6',
+	0x08:	'7',
+	0x09:	'8',
+	0x0A:	'9',
+	0x0B:	'0',
+	0x0C:	'-',
+	0x0D:	'=',
+	0x0E:	'\b',		// seems to be safe on GTK+; TODO safe on windows?
+	0x0F:	'\t',		// seems to be safe on GTK+; TODO safe on windows?
+	0x10:	'q',
+	0x11:	'w',
+	0x12:	'e',
+	0x13:	'r',
+	0x14:	't',
+	0x15:	'y',
+	0x16:	'u',
+	0x17:	'i',
+	0x18:	'o',
+	0x19:	'p',
+	0x1A:	'[',
+	0x1B:	']',
+	0x1C:	'\n',		// seems to be safe on GTK+; TODO safe on windows?
+	0x1E:	'a',
+	0x1F:	's',
+	0x20:	'd',
+	0x21:	'f',
+	0x22:	'g',
+	0x23:	'h',
+	0x24:	'j',
+	0x25:	'k',
+	0x26:	'l',
+	0x27:	';',
+	0x28:	'\'',
+	0x29:	'`',
+	0x2B:	'\\',
+	0x2C:	'z',
+	0x2D:	'x',
+	0x2E:	'c',
+	0x2F:	'v',
+	0x30:	'b',
+	0x31:	'n',
+	0x32:	'm',
+	0x33:	',',
+	0x34:	'.',
+	0x35:	'/',
+	0x39:	' ',
+}