Re: [hatari-devel] alt-gr not recognized anymore with sdl2

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 26/01/2016 20:49, David Savinkoff a écrit :
> ----- Nicolas Pomarède wrote:
> > Le 18/01/2016 20:53, Thomas Huth a écrit :
> > > On 17.01.2016 18:40, Nicolas Pomarède wrote:
> > > > Hello
> > > >
> > > > it seems some of the recent changes broke alt-gr key under linux, when I
> > > > use it I now get :
> > > >
> > > > Warning: Unhandled scancode 0xe6!
> > > >
> > > > so I'm unable to use shortcut + modifier
> > > >
> > > > It worked a few days ago with sdl2.
> > > >
> > > > If I recompile with sdl1, alt-gr works again.
> > >
> > > Sounds very strange, just like AltGr is not recognized as modifier but
> > > only as a "normal" key instead. Did you change anything to your host
> > > keyboard mapping? Does it work differntly when you change from scancode
> > > mapping to symbolic mapping in the GUI? And what do you get when you run
> > > Hatari with "--trace keymap" ?
> >
> > Hi
> >
> > changing from scancode to sympbolic doesn't solve the problem ; no
> > change were made too host mapping either (if I compile with SDL1,
> > everything works as before with the same config).
> >
> > This is what --trace keymap gives :
> >
> > press alt-gr :
> >
> > key down: sym=1073741824 scan=230 mod=0x1000 name=''
> > Warning: Unhandled scancode 0xe6!
> > key map: sym=0x40000000 to ST-scan=0xff
> >
> > release alt-gr :
> >
> > key up: sym=1073741824 scan=230 mod=0x1000 name=''
> > Warning: Unhandled scancode 0xe6!
> >
> > press F12 :
> >
> > key down: sym=1073741893 scan=69 mod=0x1000 name='F12'
> >
> >
> > I have 2 linux PC with the same problem, but in both cases I had an
> > update to the recent sdl 2.0.4 from early january (before I had 2.0.3).
> > Maybe 2.0.4 broke sthg ? Can you try installing 2.0.4 to see if you get
> > the same problem ?
> >
> >
> > Nicolas
>
> Hi,
>
> Alt-gr works for this version of SDL2, thus is good up to this point:
> SDL.9893 (SDL2 pre 2.04 from HG) Oct. 11 2015

Hi

this could be a problem on my PCs, but alt-gr still works with SDL1 
version of Hatari. And if I use "xev" to see the reported codes, I get :

for right shift :

KeyPress event, serial 40, synthetic NO, window 0x3600001,
    root 0x248, subw 0x3600002, time 44944509, (45,16), root:(1147,862),
    state 0x10, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False


for alt gr :

KeyPress event, serial 40, synthetic NO, window 0x3600001,
    root 0x248, subw 0x3600002, time 44955060, (45,16), root:(1147,862),
    state 0x10, keycode 108 (keysym 0xfe03, ISO_Level3_Shift), 
same_screen YES,
    XKeysymToKeycode returns keycode: 92
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False


So, I don't see any particular difference between these 2 keys at the 
X11 level, alt-gr has proper codes.

But for some reasons, SDL2 reports alt-gr as 0x40000000 in Hatari, which 
would mean scancode "0" according /usr/include/SDL2/SDL_keycode.h and 
these macros used to defined all the keys in SDL2 :

#define SDLK_SCANCODE_MASK (1<<30)
#define SDL_SCANCODE_TO_KEYCODE(X)  (X | SDLK_SCANCODE_MASK)

Maybe we need to look at SDL2 code to see why scancode 0xe6 (=230) 
doesn't report 40000000|e6 as it's the case for other "special" keys 
(shift, ctrl, ...)

Nicolas