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Date: Thu, 05 Jul 2007 14:02:33 -0700 From: Sam Lantinga Subject: SDL 1.3 keyboard plan After lots of discussion with Christian, this is what we came up with: > So, to sum up... > SDLK_* become the physical keys, starting at > (1<<21) > We create a macro SDLK_INDEX(X) > We have two functions SDL_GetLayoutKey(SDLKey) and SDL_GetKeyName() > SDL_GetLayoutKey maps to UCS4 for printable characters, and SDLK* for non-printable characters > and does so based on the OS's current keyboard layout > SDL_GetKeyName() handles both SDLK_* and UCS4, converting UCS4 to UTF-8 and converting SDLK_* into our names, which are UTF-8 for printable characters. > WASD folks use SDLK_*, and 'I' folks use SDL_GetLayoutKey(SDLK_*) Here is the patch he came up with, and his e-mail about it: Date: Fri, 17 Aug 2007 19:50:28 +0200 From: Christian Walther Subject: Re: SDL 1.3 keyboard plan > Sounds great, go ahead and send me a patch. Here goes! Thanks for having a look. Don't hesitate to comment if anything does not conform to your ideas. One caveat: Committing this now may break compilability of some video drivers - specifically, if they use any of the SDLK_* codes that were obsoleted and moved into SDL_compat.h. I only tried Cocoa (which did break, but is already fixed) and X11 (which didn't, but then its key handling is #iffed out). If that's a problem, it may need to go into a branch. -Christian
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Aug 2007 14:52:52 +0000
parents b42abf0a50bc
children 99210400e8b9
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/

/*
 *	VBL queue routine
 *
 *	Patrice Mandin
 */

#define _vbl_queue 0x456
#define _hz_200    0x4ba

	.text

	.globl	_SDL_AtariVblInstall
	.globl	_SDL_AtariVblUninstall

	.globl	_SDL_MintAudio_hasfpu

/*--- Vector installer ---*/

_SDL_AtariVblInstall:
	movel	sp@(4),my_vector
	lea		_my_vbl,a0

	clrw	vbl_mutex
	movel	_hz_200.w, _SDL_Atari_hz200

	/* Stop interrupts */

	movew	#0x2700,sr

	/* Read vbl_queue pointer */
	movel	_vbl_queue.w,a1

	/* Search a free place */
	moveq	#7,d0
bcl_search_place:
	movel	(a1),d1
	beqs	place_found
	addql	#4,a1
	dbra	d0,bcl_search_place

	/* Not found */
	moveq	#1,d0
	bras	exit_vbl_queue

	/* Then install ourselves */
place_found:
	movel	a0,(a1)
	moveq	#0,d0	

exit_vbl_queue:
	/* Restart interrupts */
	movew	#0x2300,sr

	rts

/*--- Vector uninstaller ---*/

_SDL_AtariVblUninstall:
	movel	sp@(4),d0
	cmpl	my_vector,d0
	bnes	badvector
	
	movel	#_my_vbl,d0

	/* Stop interrupts */

	movew	#0x2700,sr

	/* Read vbl_queue pointer */
	movel	_vbl_queue.w,a1

	/* Search where we are */
	moveq	#7,d1
bcl2_search_place:
	cmpl	(a1),d0
	bnes	next_place
	clrl	(a1)
	moveq	#0,d1
next_place:
	addql	#4,a1
	dbra	d1,bcl2_search_place

	/* Restart interrupts */
	movew	#0x2300,sr
badvector:
	rts

/*--- Our vbl ---*/

_my_vbl:
	/* Update _hz_200 */
	movel	_hz_200.w, _SDL_Atari_hz200

	/* Verify if this is not already running */

	tstw	vbl_mutex
	bnes	vbl_end
	notw	vbl_mutex

	moveml	d0-d7/a0-a6,sp@-

	/* Save FPU if needed */
	tstw	_SDL_MintAudio_hasfpu
	beqs	SDL_AtariVbl_nofpu1
	.chip	68060
	fsave	sp@-
	fmoveml fpcr/fpsr/fpiar,sp@-
	fmovemx	fp0-fp7,sp@-
	.chip	68000
SDL_AtariVbl_nofpu1:

	movel	my_vector,a0
	jsr		a0@

	/* Restore FPU if needed */
	tstw	_SDL_MintAudio_hasfpu
	beqs	SDL_AtariVbl_Xbios_nofpu2
	.chip	68060
	fmovemx	sp@+,fp0-fp7
	fmoveml	sp@+,fpcr/fpsr/fpiar
	frestore	sp@+
	.chip	68000
SDL_AtariVbl_Xbios_nofpu2:

	moveml	sp@+,d0-d7/a0-a6

	clrw	vbl_mutex
vbl_end:
	rts

	.data
	.even
	.comm	_SDL_Atari_hz200,4*1
	.even
	.comm	vbl_mutex,2*1
	.even
	.comm	my_vector,4*1