view src/events/SDL_keyboard_c.h @ 2268:4baee598306d

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 047245361002
children c97ad1abe05b
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
*/
#include "SDL_config.h"

#ifndef _SDL_keyboard_c_h
#define _SDL_keyboard_c_h

#include "SDL_keysym.h"
#include "SDL_events.h"

typedef struct SDL_Keyboard SDL_Keyboard;

struct SDL_Keyboard
{
    /* Free the keyboard when it's time */
    void (*FreeKeyboard) (SDL_Keyboard * keyboard);

    /* Data common to all keyboards */
    SDL_WindowID focus;
    Uint16 modstate;
    Uint8 keystate[SDLK_LAST];

    void *driverdata;
};

/* Used by the OS keyboard code to detect whether or not to do UNICODE */
#ifndef DEFAULT_UNICODE_TRANSLATION
#define DEFAULT_UNICODE_TRANSLATION 0   /* Default off because of overhead */
#endif
extern int SDL_TranslateUNICODE;

/* Initialize the keyboard subsystem */
extern int SDL_KeyboardInit(void);

/* Get the keyboard at an index */
extern SDL_Keyboard *SDL_GetKeyboard(int index);

/* Add a keyboard, possibly reattaching at a particular index (or -1),
   returning the index of the keyboard, or -1 if there was an error.
 */
extern int SDL_AddKeyboard(const SDL_Keyboard * keyboard, int index);

/* Remove a keyboard at an index, clearing the slot for later */
extern void SDL_DelKeyboard(int index);

/* Clear the state of a keyboard at an index */
extern void SDL_ResetKeyboard(int index);

/* Set a platform-dependent key name, overriding the default platform-agnostic
   name. Encoded as UTF-8. The string is not copied, thus the pointer given to
   this function must stay valid forever (or at least until the call to
   VideoQuit()). */
extern void SDL_SetKeyName(SDLKey physicalKey, const char *name);

/* Set the keyboard focus window */
extern void SDL_SetKeyboardFocus(int index, SDL_WindowID windowID);

/* Send a keyboard event for a keyboard at an index */
extern int SDL_SendKeyboardKey(int index, Uint8 state, Uint8 scancode,
                               SDLKey key);

/* Send keyboard text input for a keyboard at an index */
extern int SDL_SendKeyboardText(int index, const char *text);

/* Shutdown the keyboard subsystem */
extern void SDL_KeyboardQuit(void);

#endif /* _SDL_keyboard_c_h */

/* vi: set ts=4 sw=4 expandtab: */