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SDL_win32keyboard.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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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
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Sam Lantinga
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slouken@libsdl.org
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#include "SDL_config.h"
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#include "SDL_win32video.h"
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#include "../../events/SDL_keyboard_c.h"
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#include "../../events/scancodes_win32.h"
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#ifndef MAPVK_VK_TO_VSC
#define MAPVK_VK_TO_VSC 0
#endif
#ifndef MAPVK_VSC_TO_VK
#define MAPVK_VSC_TO_VK 1
#endif
#ifndef MAPVK_VK_TO_CHAR
#define MAPVK_VK_TO_CHAR 2
#endif
/* Alphabetic scancodes for PC keyboards */
BYTE alpha_scancodes[26] = {
30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 50, 49, 24,
25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44
};
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BYTE keypad_scancodes[10] = {
82, 79, 80, 81, 75, 76, 77, 71, 72, 73
};
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void
WIN_InitKeyboard(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
SDL_Keyboard keyboard;
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int i;
/* Make sure the alpha scancodes are correct. T isn't usually remapped */
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if (MapVirtualKey('T', MAPVK_VK_TO_VSC) != alpha_scancodes['T' - 'A']) {
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#if 0
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printf
("Fixing alpha scancode map, assuming US QWERTY layout!\nPlease send the following 26 lines of output to the SDL mailing list <sdl@libsdl.org>, including a description of your keyboard hardware.\n");
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#endif
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for (i = 0; i < SDL_arraysize(alpha_scancodes); ++i) {
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alpha_scancodes[i] = MapVirtualKey('A' + i, MAPVK_VK_TO_VSC);
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#if 0
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printf("%d = %d\n", i, alpha_scancodes[i]);
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#endif
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if (MapVirtualKey(VK_NUMPAD0, MAPVK_VK_TO_VSC) != keypad_scancodes[0]) {
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#if 0
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printf
("Fixing keypad scancode map!\nPlease send the following 10 lines of output to the SDL mailing list <sdl@libsdl.org>, including a description of your keyboard hardware.\n");
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#endif
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for (i = 0; i < SDL_arraysize(keypad_scancodes); ++i) {
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keypad_scancodes[i] =
MapVirtualKey(VK_NUMPAD0 + i, MAPVK_VK_TO_VSC);
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#if 0
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printf("%d = %d\n", i, keypad_scancodes[i]);
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#endif
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data->key_layout = win32_scancode_table;
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SDL_zero(keyboard);
data->keyboard = SDL_AddKeyboard(&keyboard, -1);
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WIN_UpdateKeymap(data->keyboard);
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SDL_SetScancodeName(SDL_SCANCODE_APPLICATION, "Menu");
SDL_SetScancodeName(SDL_SCANCODE_LGUI, "Left Windows");
SDL_SetScancodeName(SDL_SCANCODE_RGUI, "Right Windows");
}
void
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WIN_UpdateKeymap(int keyboard)
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{
int i;
SDL_scancode scancode;
SDLKey keymap[SDL_NUM_SCANCODES];
SDL_GetDefaultKeymap(keymap);
for (i = 0; i < SDL_arraysize(win32_scancode_table); i++) {
/* Make sure this scancode is a valid character scancode */
scancode = win32_scancode_table[i];
if (scancode == SDL_SCANCODE_UNKNOWN ||
(keymap[scancode] & SDLK_SCANCODE_MASK)) {
continue;
}
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/* Alphabetic keys are handled specially, since Windows remaps them */
if (i >= 'A' && i <= 'Z') {
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BYTE vsc = alpha_scancodes[i - 'A'];
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keymap[scancode] = MapVirtualKey(vsc, MAPVK_VSC_TO_VK) + 0x20;
} else {
keymap[scancode] = (MapVirtualKey(i, MAPVK_VK_TO_CHAR) & 0x7FFF);
}
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SDL_SetKeymap(keyboard, 0, keymap, SDL_NUM_SCANCODES);
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}
void
WIN_QuitKeyboard(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
SDL_DelKeyboard(data->keyboard);
}
/* vi: set ts=4 sw=4 expandtab: */