Changing keyboard layout on Touchpad

Virtual keyboard layouts in Touchpad are hardcoded into LunaSysMgr binary.

Generally there are three keyboard layouts: QWERTY, QWERTZ and AZERTY. Apart of these layouts there are extended character sets which are accessed with long tap on some keys.

I. Keyboard layouts

Each keyboard layout consists of main layout and 3 interchangeble bottom rows of keyboard for different applications.

Main keyboard layout describes 5 rows of 12 keys each.

3 bottom rows are 12 keys each

In total there are 8 rows of 12 keys each.

Each key is described by 4 double words (4 bytes).

1 - button type(big endian)

   2 last bytes are used
   Mostly they are set of flags but there is too few info to decode all of them.
   The least one is button type
       BF - no button. i.e. there is button and if you press it it will type but
            it is invisible (try typing to the right of 0 or to the left of 1
            to check what is being typed in normal keyboard)
       3F - normal button
       40 - long button (like spacebar)
   The second is length class:
       40 - short one (mostly spacers)
       80 - normal width
       C0 - long one (Shift etc.)
       A0 - very long one (space bar)
   Normal button will look like 0x0000803F

2 - utf-code of main symbol(little endian)(It may be not utf but USC2 but as I get it UTF8 in little endian is the same as USC2 (at least for english and cyrillic characters))

3 - utf-code of secondary symbol(little endian)

4 - Extended characters set address (little endian)

About symbols (2,3) If the greatest byte (the most right one in LE) is 01 then it is not symbol but the text from some static variable defined in the file (like smiles, .com etc.) or special button like shift, enter etc. If main symbol is considered regional by system (it is hardcoded somewhere in LunaSysMgr) then the behaviour is as follows:

   a. When shift is pressed The big letter is produced
   b. Without shift small letter is produced.
   c. With caps on big letter is produced
   d. When switched to secondary keys ([]-/ button) secondary symbol is
   e. Button is white

produced always If main symbol is not considered regional (unfortunatelly russian letters are not considered regional)

   a. When shift is pressed secondary symbol is produced
   b. Without shift small(if appliable) main symbol is produced
   c. With caps on big(if appliable) main symbol is produced
   d. When switched to secondary keys ([]-/ button) behaviour of
   e. Button is light grey

previous statements is not changed. And look of keys too.

To make nonregional keys act like regional ones the only workaround is to duplicate them as main and secondary symbols.

II. Extended characters sets

There are 65 extended character sets.

Namely: 17 for letters (E R T Y U I O P A S D G L Z C N M). They are general for all 3 keyboard layouts. 3*10 for numbers (1 2 3 4 5 6 7 8 9 0). For each layout there are different sets for each number 5+5+6 for punctuations and .com. There are 4 for QWERTY and QWERTZ and 5 for AZERTY. And for each layout there is special set for .com Also there is a set for http:// and for choosing keyboard size. They are general for all 3 layouts.

Each set is a sequence of double words with utf-codes of letters (or links to static text) ending with zero dword. For ex. for A-letter set it is 41000000 c0000000 c1000000 c2000000 c3000000 c4000000 c5000000 e6000000 aa000000 00000000

III. Offsets

3.0.0 emul	3.0.0 device	3.0.2 device	keyboard/letter
0x003EE840	0x003BEE80	0x003CACB0	QWERTY Main layout
0x003EEC00	0x003BF240	0x003CB070	QWERTY Default bottom row
0x003EECC0	0x003BF300	0x003CB130	QWERTY URL bottom row
0x003EED80	0x003BF3C0	0x003CB1F0	QWERTY Email bottom row
0x003EEE40	0x003BF480	0x003CB2B0	QWERTZ Main layout
0x003EF200	0x003BF840	0x003CB670	QWERTZ Default bottom row
0x003EF2C0	0x003BF900	0x003CB730	QWERTZ URL bottom row
0x003EF380	0x003BF9C0	0x003CB7F0	QWERTZ Email bottom row
0x003EF440	0x003BFA80	0x003CB8B0	AZERTY Main layout
0x003EF800	0x003BFE40	0x003CBC70	AZERTY Default bottom row
0x003EF8C0	0x003BFF00	0x003CBD30	AZERTY URL bottom row
0x003EF980	0x003BFFC0	0x003CBDF0	AZERTY Email bottom row

Extended character offsets are very numberous to list them all. I will just name offsets for firs one and the order of sets. As each set is ended with 0x00000000, it will be quite easy to distinguish them

The order is following

3.0.0 emul	3.0.0 device	3.0.2 device	letter to which character set is bind
0x003C33DC	0x00388BB4	0x00393608	QWERTY 1
			QWERTY 2
			QWERTY 3
			QWERTY 4
			QWERTY 5
			QWERTY 6
			QWERTY 7
			QWERTY 8
			QWERTY 9
			QWERTY 0
			E
			R
			T
			Y
			U
			I
			O
			P
			A
			S
			D
			G
			L
			Z
			C
			N
			M
			QWERTY ,/
			QWERTY .?
			QWERTY '"
			QWERTY -_
			Hide keyboard(size of it)
			URL key /
			QWERTY .com
			QWERTZ 1
			QWERTZ 2
			QWERTZ 3
			QWERTZ 4
			QWERTZ 5
			QWERTZ 6
			QWERTZ 7
			QWERTZ 8
			QWERTZ 9
			QWERTZ 0
			QWERTZ ,;
			QWERTZ .:
			QWERTZ #?
			QWERTZ -'
			QWERTZ .com
			AZERTY 1
			AZERTY 2
			AZERTY 3
			AZERTY 4
			AZERTY 5
			AZERTY 6
			AZERTY 7
			AZERTY 8
			AZERTY 9
			AZERTY 0
			AZERTY ,?
			AZERTY .;
			AZERTY :/
			AZERTY @_
			AZERTY !*
			AZERTY .com