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SDL_keyboard.c
1004 lines (936 loc) · 20.7 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 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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*/
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#include "SDL_config.h"
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/* General keyboard handling code for SDL */
#include "SDL_timer.h"
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#include "SDL_events.h"
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#include "SDL_events_c.h"
#include "SDL_sysevents.h"
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/* Global keyboard information */
static int SDL_num_keyboards;
static int SDL_current_keyboard;
static SDL_Keyboard **SDL_keyboards;
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static const SDLKey SDL_default_keymap[SDL_NUM_SCANCODES] = {
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0, 0, 0, 0,
'a',
'b',
'c',
'd',
'e',
'f',
'g',
'h',
'i',
'j',
'k',
'l',
'm',
'n',
'o',
'p',
'q',
'r',
's',
't',
'u',
'v',
'w',
'x',
'y',
'z',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'0',
SDLK_RETURN,
SDLK_ESCAPE,
SDLK_BACKSPACE,
SDLK_TAB,
SDLK_SPACE,
'-',
'=',
'[',
']',
'\\',
'#',
';',
'\'',
'`',
',',
'.',
'/',
SDLK_CAPSLOCK,
SDLK_F1,
SDLK_F2,
SDLK_F3,
SDLK_F4,
SDLK_F5,
SDLK_F6,
SDLK_F7,
SDLK_F8,
SDLK_F9,
SDLK_F10,
SDLK_F11,
SDLK_F12,
SDLK_PRINTSCREEN,
SDLK_SCROLLLOCK,
SDLK_PAUSE,
SDLK_INSERT,
SDLK_HOME,
SDLK_PAGEUP,
SDLK_DELETE,
SDLK_END,
SDLK_PAGEDOWN,
SDLK_RIGHT,
SDLK_LEFT,
SDLK_DOWN,
SDLK_UP,
SDLK_NUMLOCKCLEAR,
SDLK_KP_DIVIDE,
SDLK_KP_MULTIPLY,
SDLK_KP_MINUS,
SDLK_KP_PLUS,
SDLK_KP_ENTER,
SDLK_KP_1,
SDLK_KP_2,
SDLK_KP_3,
SDLK_KP_4,
SDLK_KP_5,
SDLK_KP_6,
SDLK_KP_7,
SDLK_KP_8,
SDLK_KP_9,
SDLK_KP_0,
SDLK_KP_PERIOD,
0,
SDLK_APPLICATION,
SDLK_POWER,
SDLK_KP_EQUALS,
SDLK_F13,
SDLK_F14,
SDLK_F15,
SDLK_F16,
SDLK_F17,
SDLK_F18,
SDLK_F19,
SDLK_F20,
SDLK_F21,
SDLK_F22,
SDLK_F23,
SDLK_F24,
SDLK_EXECUTE,
SDLK_HELP,
SDLK_MENU,
SDLK_SELECT,
SDLK_STOP,
SDLK_AGAIN,
SDLK_UNDO,
SDLK_CUT,
SDLK_COPY,
SDLK_PASTE,
SDLK_FIND,
SDLK_MUTE,
SDLK_VOLUMEUP,
SDLK_VOLUMEDOWN,
0, 0, 0,
SDLK_KP_COMMA,
SDLK_KP_EQUALSAS400,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
SDLK_ALTERASE,
SDLK_SYSREQ,
SDLK_CANCEL,
SDLK_CLEAR,
SDLK_PRIOR,
SDLK_RETURN2,
SDLK_SEPARATOR,
SDLK_OUT,
SDLK_OPER,
SDLK_CLEARAGAIN,
SDLK_CRSEL,
SDLK_EXSEL,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
SDLK_KP_00,
SDLK_KP_000,
SDLK_THOUSANDSSEPARATOR,
SDLK_DECIMALSEPARATOR,
SDLK_CURRENCYUNIT,
SDLK_CURRENCYSUBUNIT,
SDLK_KP_LEFTPAREN,
SDLK_KP_RIGHTPAREN,
SDLK_KP_LEFTBRACE,
SDLK_KP_RIGHTBRACE,
SDLK_KP_TAB,
SDLK_KP_BACKSPACE,
SDLK_KP_A,
SDLK_KP_B,
SDLK_KP_C,
SDLK_KP_D,
SDLK_KP_E,
SDLK_KP_F,
SDLK_KP_XOR,
SDLK_KP_POWER,
SDLK_KP_PERCENT,
SDLK_KP_LESS,
SDLK_KP_GREATER,
SDLK_KP_AMPERSAND,
SDLK_KP_DBLAMPERSAND,
SDLK_KP_VERTICALBAR,
SDLK_KP_DBLVERTICALBAR,
SDLK_KP_COLON,
SDLK_KP_HASH,
SDLK_KP_SPACE,
SDLK_KP_AT,
SDLK_KP_EXCLAM,
SDLK_KP_MEMSTORE,
SDLK_KP_MEMRECALL,
SDLK_KP_MEMCLEAR,
SDLK_KP_MEMADD,
SDLK_KP_MEMSUBTRACT,
SDLK_KP_MEMMULTIPLY,
SDLK_KP_MEMDIVIDE,
SDLK_KP_PLUSMINUS,
SDLK_KP_CLEAR,
SDLK_KP_CLEARENTRY,
SDLK_KP_BINARY,
SDLK_KP_OCTAL,
SDLK_KP_DECIMAL,
SDLK_KP_HEXADECIMAL,
0, 0,
SDLK_LCTRL,
SDLK_LSHIFT,
SDLK_LALT,
SDLK_LGUI,
SDLK_RCTRL,
SDLK_RSHIFT,
SDLK_RALT,
SDLK_RGUI,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
SDLK_MODE,
SDLK_AUDIONEXT,
SDLK_AUDIOPREV,
SDLK_AUDIOSTOP,
SDLK_AUDIOPLAY,
SDLK_AUDIOMUTE,
SDLK_MEDIASELECT,
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SDLK_WWW,
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SDLK_MAIL,
SDLK_CALCULATOR,
SDLK_COMPUTER,
SDLK_AC_SEARCH,
SDLK_AC_HOME,
SDLK_AC_BACK,
SDLK_AC_FORWARD,
SDLK_AC_STOP,
SDLK_AC_REFRESH,
SDLK_AC_BOOKMARKS,
SDLK_BRIGHTNESSDOWN,
SDLK_BRIGHTNESSUP,
SDLK_DISPLAYSWITCH,
SDLK_KBDILLUMTOGGLE,
SDLK_KBDILLUMDOWN,
SDLK_KBDILLUMUP,
SDLK_EJECT,
SDLK_SLEEP,
};
static const char *SDL_scancode_names[SDL_NUM_SCANCODES] = {
NULL, NULL, NULL, NULL,
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"0",
"Return",
"Escape",
"Backspace",
"Tab",
"Space",
"-",
"=",
"[",
"]",
"\\",
"#",
";",
"'",
"`",
",",
".",
"/",
"CapsLock",
"F1",
"F2",
"F3",
"F4",
"F5",
"F6",
"F7",
"F8",
"F9",
"F10",
"F11",
"F12",
"PrintScreen",
"ScrollLock",
"Pause",
"Insert",
"Home",
"PageUp",
"Delete",
"End",
"PageDown",
"Right",
"Left",
"Down",
"Up",
"Numlock",
"Keypad /",
"Keypad *",
"Keypad -",
"Keypad +",
"Keypad Enter",
"Keypad 1",
"Keypad 2",
"Keypad 3",
"Keypad 4",
"Keypad 5",
"Keypad 6",
"Keypad 7",
"Keypad 8",
"Keypad 9",
"Keypad 0",
"Keypad .",
NULL,
"Application",
"Power",
"Keypad =",
"F13",
"F14",
"F15",
"F16",
"F17",
"F18",
"F19",
"F20",
"F21",
"F22",
"F23",
"F24",
"Execute",
"Help",
"Menu",
"Select",
"Stop",
"Again",
"Undo",
"Cut",
"Copy",
"Paste",
"Find",
"Mute",
"VolumeUp",
"VolumeDown",
NULL, NULL, NULL,
"Keypad ,",
"Keypad = (AS400)",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL,
"AltErase",
"SysReq",
"Cancel",
"Clear",
"Prior",
"Return",
"Separator",
"Out",
"Oper",
"Clear / Again",
"CrSel",
"ExSel",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"Keypad 00",
"Keypad 000",
"ThousandsSeparator",
"DecimalSeparator",
"CurrencyUnit",
"CurrencySubUnit",
"Keypad (",
"Keypad )",
"Keypad {",
"Keypad }",
"Keypad Tab",
"Keypad Backspace",
"Keypad A",
"Keypad B",
"Keypad C",
"Keypad D",
"Keypad E",
"Keypad F",
"Keypad XOR",
"Keypad ^",
"Keypad %",
"Keypad <",
"Keypad >",
"Keypad &",
"Keypad &&",
"Keypad |",
"Keypad ||",
"Keypad :",
"Keypad #",
"Keypad Space",
"Keypad @",
"Keypad !",
"Keypad MemStore",
"Keypad MemRecall",
"Keypad MemClear",
"Keypad MemAdd",
"Keypad MemSubtract",
"Keypad MemMultiply",
"Keypad MemDivide",
"Keypad +/-",
"Keypad Clear",
"Keypad ClearEntry",
"Keypad Binary",
"Keypad Octal",
"Keypad Decimal",
"Keypad Hexadecimal",
NULL, NULL,
"Left Ctrl",
"Left Shift",
"Left Alt",
"Left GUI",
"Right Ctrl",
"Right Shift",
"Right Alt",
"Right GUI",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL,
"ModeSwitch",
"AudioNext",
"AudioPrev",
"AudioStop",
"AudioPlay",
"AudioMute",
"MediaSelect",
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"WWW",
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"Mail",
"Calculator",
"Computer",
"AC Search",
"AC Home",
"AC Back",
"AC Forward",
"AC Stop",
"AC Refresh",
"AC Bookmarks",
"BrightnessDown",
"BrightnessUp",
"DisplaySwitch",
"KBDIllumToggle",
"KBDIllumDown",
"KBDIllumUp",
"Eject",
"Sleep",
};
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/* Taken from SDL_iconv() */
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static char *
SDL_UCS4ToUTF8(Uint32 ch, char *dst)
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{
Uint8 *p = (Uint8 *) dst;
if (ch <= 0x7F) {
*p = (Uint8) ch;
++dst;
} else if (ch <= 0x7FF) {
p[0] = 0xC0 | (Uint8) ((ch >> 6) & 0x1F);
p[1] = 0x80 | (Uint8) (ch & 0x3F);
dst += 2;
} else if (ch <= 0xFFFF) {
p[0] = 0xE0 | (Uint8) ((ch >> 12) & 0x0F);
p[1] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[2] = 0x80 | (Uint8) (ch & 0x3F);
dst += 3;
} else if (ch <= 0x1FFFFF) {
p[0] = 0xF0 | (Uint8) ((ch >> 18) & 0x07);
p[1] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
p[2] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[3] = 0x80 | (Uint8) (ch & 0x3F);
dst += 4;
} else if (ch <= 0x3FFFFFF) {
p[0] = 0xF8 | (Uint8) ((ch >> 24) & 0x03);
p[1] = 0x80 | (Uint8) ((ch >> 18) & 0x3F);
p[2] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
p[3] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[4] = 0x80 | (Uint8) (ch & 0x3F);
dst += 5;
} else {
p[0] = 0xFC | (Uint8) ((ch >> 30) & 0x01);
p[1] = 0x80 | (Uint8) ((ch >> 24) & 0x3F);
p[2] = 0x80 | (Uint8) ((ch >> 18) & 0x3F);
p[3] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
p[4] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[5] = 0x80 | (Uint8) (ch & 0x3F);
dst += 6;
}
return dst;
}
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/* Public functions */
int
SDL_KeyboardInit(void)
{
return (0);
}
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SDL_Keyboard *
SDL_GetKeyboard(int index)
{
if (index < 0 || index >= SDL_num_keyboards) {
return NULL;
}
return SDL_keyboards[index];
}
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int
SDL_AddKeyboard(const SDL_Keyboard * keyboard, int index)
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{
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SDL_Keyboard **keyboards;
/* Add the keyboard to the list of keyboards */
if (index < 0 || index >= SDL_num_keyboards || SDL_keyboards[index]) {
keyboards =
(SDL_Keyboard **) SDL_realloc(SDL_keyboards,
(SDL_num_keyboards +
1) * sizeof(*keyboards));
if (!keyboards) {
SDL_OutOfMemory();
return -1;
}
SDL_keyboards = keyboards;
index = SDL_num_keyboards++;
}
SDL_keyboards[index] =
(SDL_Keyboard *) SDL_malloc(sizeof(*SDL_keyboards[index]));
if (!SDL_keyboards[index]) {
SDL_OutOfMemory();
return -1;
}
*SDL_keyboards[index] = *keyboard;
return index;
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}
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void
SDL_DelKeyboard(int index)
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{
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SDL_Keyboard *keyboard = SDL_GetKeyboard(index);
if (!keyboard) {
return;
}
if (keyboard->FreeKeyboard) {
keyboard->FreeKeyboard(keyboard);
}
SDL_free(keyboard);
SDL_keyboards[index] = NULL;
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}
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void
SDL_ResetKeyboard(int index)
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{
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SDL_Keyboard *keyboard = SDL_GetKeyboard(index);
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SDL_scancode scancode;
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if (!keyboard) {
return;
}
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for (scancode = 0; scancode < SDL_NUM_SCANCODES; ++scancode) {
if (keyboard->keystate[scancode] == SDL_PRESSED) {
SDL_SendKeyboardKey(index, SDL_RELEASED, scancode);
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}
}
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}
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void
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SDL_GetDefaultKeymap(SDLKey * keymap)
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{
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SDL_memcpy(keymap, SDL_default_keymap, sizeof(SDL_default_keymap));
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}
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void
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SDL_SetKeymap(int index, int start, SDLKey * keys, int length)
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{
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SDL_Keyboard *keyboard = SDL_GetKeyboard(index);
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if (!keyboard) {
return;
}
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if (start < 0 || start + length > SDL_NUM_SCANCODES) {
return;
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}
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SDL_memcpy(&keyboard->keymap[start], keys, sizeof(*keys) * length);
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}
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void
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SDL_SetScancodeName(SDL_scancode scancode, const char *name)
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{
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SDL_scancode_names[scancode] = name;
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}
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void
SDL_SetKeyboardFocus(int index, SDL_WindowID windowID)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(index);
int i;
SDL_bool focus;
if (!keyboard || (keyboard->focus == windowID)) {
return;
}
/* See if the current window has lost focus */
if (keyboard->focus) {
focus = SDL_FALSE;
for (i = 0; i < SDL_num_keyboards; ++i) {
SDL_Keyboard *check;
if (i != index) {
check = SDL_GetKeyboard(i);
if (check && check->focus == keyboard->focus) {
focus = SDL_TRUE;
break;
}
}
}
if (!focus) {
SDL_SendWindowEvent(keyboard->focus, SDL_WINDOWEVENT_FOCUS_LOST,
0, 0);
}
}
keyboard->focus = windowID;
if (keyboard->focus) {
focus = SDL_FALSE;
for (i = 0; i < SDL_num_keyboards; ++i) {
SDL_Keyboard *check;
if (i != index) {
check = SDL_GetKeyboard(i);
if (check && check->focus == keyboard->focus) {
focus = SDL_TRUE;
break;
}
}
}
if (!focus) {
SDL_SendWindowEvent(keyboard->focus, SDL_WINDOWEVENT_FOCUS_GAINED,
0, 0);
}
}
}
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int
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SDL_SendKeyboardKey(int index, Uint8 state, SDL_scancode scancode)
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{
SDL_Keyboard *keyboard = SDL_GetKeyboard(index);
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int posted;
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Uint16 modstate;
Uint8 type;
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if (!keyboard || !scancode) {
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return 0;
}
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#if 0
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printf("The '%s' key has been %s\n", SDL_GetScancodeName(scancode),
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state == SDL_PRESSED ? "pressed" : "released");
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#endif
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if (state == SDL_PRESSED) {
modstate = keyboard->modstate;
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switch (scancode) {
case SDL_SCANCODE_NUMLOCKCLEAR:
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keyboard->modstate ^= KMOD_NUM;
break;
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case SDL_SCANCODE_CAPSLOCK:
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keyboard->modstate ^= KMOD_CAPS;
break;
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case SDL_SCANCODE_LCTRL:
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keyboard->modstate |= KMOD_LCTRL;
break;
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case SDL_SCANCODE_RCTRL:
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728
keyboard->modstate |= KMOD_RCTRL;
break;
729
case SDL_SCANCODE_LSHIFT:
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731
keyboard->modstate |= KMOD_LSHIFT;
break;
732
case SDL_SCANCODE_RSHIFT:
733
734
keyboard->modstate |= KMOD_RSHIFT;
break;
735
case SDL_SCANCODE_LALT:
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737
keyboard->modstate |= KMOD_LALT;
break;
738
case SDL_SCANCODE_RALT:
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740
keyboard->modstate |= KMOD_RALT;
break;
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742
case SDL_SCANCODE_LGUI:
keyboard->modstate |= KMOD_LGUI;
743
break;
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745
case SDL_SCANCODE_RGUI:
keyboard->modstate |= KMOD_RGUI;
746
break;
747
case SDL_SCANCODE_MODE:
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749
750
751
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753
keyboard->modstate |= KMOD_MODE;
break;
default:
break;
}
} else {
754
755
756
switch (scancode) {
case SDL_SCANCODE_NUMLOCKCLEAR:
case SDL_SCANCODE_CAPSLOCK:
757
break;
758
case SDL_SCANCODE_LCTRL:
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760
keyboard->modstate &= ~KMOD_LCTRL;
break;
761
case SDL_SCANCODE_RCTRL:
762
763
keyboard->modstate &= ~KMOD_RCTRL;
break;
764
case SDL_SCANCODE_LSHIFT:
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766
keyboard->modstate &= ~KMOD_LSHIFT;
break;
767
case SDL_SCANCODE_RSHIFT:
768
769
keyboard->modstate &= ~KMOD_RSHIFT;
break;
770
case SDL_SCANCODE_LALT:
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772
keyboard->modstate &= ~KMOD_LALT;
break;
773
case SDL_SCANCODE_RALT:
774
775
keyboard->modstate &= ~KMOD_RALT;
break;
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777
case SDL_SCANCODE_LGUI:
keyboard->modstate &= ~KMOD_LGUI;
778
break;
779
780
case SDL_SCANCODE_RGUI:
keyboard->modstate &= ~KMOD_RGUI;
781
break;
782
case SDL_SCANCODE_MODE:
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784
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786
787
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789
790
791
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793
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795
796
797
798
799
800
801
802
803
keyboard->modstate &= ~KMOD_MODE;
break;
default:
break;
}
modstate = keyboard->modstate;
}
/* Figure out what type of event this is */
switch (state) {
case SDL_PRESSED:
type = SDL_KEYDOWN;
break;
case SDL_RELEASED:
type = SDL_KEYUP;
break;
default:
/* Invalid state -- bail */
return 0;
}
804
805
/* Drop events that don't change state */
if (keyboard->keystate[scancode] == state) {
806
#if 0
807
printf("Keyboard event didn't change state - dropped!\n");
808
#endif
809
return 0;
810
811
}
812
813
814
/* Update internal keyboard state */
keyboard->keystate[scancode] = state;
815
816
817
818
819
820
821
822
/* Post the event, if desired */
posted = 0;
if (SDL_ProcessEvents[type] == SDL_ENABLE) {
SDL_Event event;
event.key.type = type;
event.key.which = (Uint8) index;
event.key.state = state;
event.key.keysym.scancode = scancode;
823
event.key.keysym.sym = keyboard->keymap[scancode];
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
event.key.keysym.mod = modstate;
event.key.keysym.unicode = 0;
event.key.windowID = keyboard->focus;
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
int
SDL_SendKeyboardText(int index, const char *text)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(index);
int posted;
if (!keyboard) {
return 0;
}
/* Post the event, if desired */
posted = 0;
if (SDL_ProcessEvents[SDL_TEXTINPUT] == SDL_ENABLE) {
SDL_Event event;
event.text.type = SDL_TEXTINPUT;
event.text.which = (Uint8) index;
SDL_strlcpy(event.text.text, text, SDL_arraysize(event.text.text));
849
event.text.windowID = keyboard->focus;
850
851
852
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
853
854
}
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
void
SDL_KeyboardQuit(void)
{
int i;
for (i = 0; i < SDL_num_keyboards; ++i) {
SDL_DelKeyboard(i);
}
SDL_num_keyboards = 0;
SDL_current_keyboard = 0;
if (SDL_keyboards) {
SDL_free(SDL_keyboards);
SDL_keyboards = NULL;
}
}
int
SDL_GetNumKeyboards(void)
{
return SDL_num_keyboards;
}
int
SDL_SelectKeyboard(int index)
{
if (index >= 0 && index < SDL_num_keyboards) {
SDL_current_keyboard = index;
}
return SDL_current_keyboard;
}
Uint8 *
SDL_GetKeyboardState(int *numkeys)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(SDL_current_keyboard);
if (numkeys != (int *) 0) {
*numkeys = SDL_NUM_SCANCODES;
}
if (!keyboard) {
return NULL;
}
return keyboard->keystate;
}
SDLMod
SDL_GetModState(void)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(SDL_current_keyboard);
if (!keyboard) {
return KMOD_NONE;
}
return keyboard->modstate;
}
void
SDL_SetModState(SDLMod modstate)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(SDL_current_keyboard);
if (!keyboard) {
return;
}
keyboard->modstate = modstate;
}
SDLKey
SDL_GetKeyFromScancode(SDL_scancode scancode)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(SDL_current_keyboard);
if (!keyboard) {
return SDLK_UNKNOWN;
}
return keyboard->keymap[scancode];
}
SDL_scancode
SDL_GetScancodeFromKey(SDLKey key)
{
SDL_Keyboard *keyboard = SDL_GetKeyboard(SDL_current_keyboard);
SDL_scancode scancode;
if (!keyboard) {
return SDL_SCANCODE_UNKNOWN;
}
for (scancode = SDL_SCANCODE_UNKNOWN; scancode < SDL_NUM_SCANCODES;
++scancode) {
if (keyboard->keymap[scancode] == key) {
return scancode;
}
}
return SDL_SCANCODE_UNKNOWN;
}
const char *
SDL_GetScancodeName(SDL_scancode scancode)
{
const char *name = SDL_scancode_names[scancode];
if (name)
return name;
else
return "";
}
const char *
SDL_GetKeyName(SDLKey key)
{
static char name[8];
char *end;
if (key & SDLK_SCANCODE_MASK) {
return
SDL_GetScancodeName((SDL_scancode) (key & ~SDLK_SCANCODE_MASK));
}
976
977
switch (key) {
case SDLK_RETURN:
978
return SDL_GetScancodeName(SDL_SCANCODE_RETURN);
979
case SDLK_ESCAPE:
980
return SDL_GetScancodeName(SDL_SCANCODE_ESCAPE);
981
case SDLK_BACKSPACE:
982
return SDL_GetScancodeName(SDL_SCANCODE_BACKSPACE);
983
case SDLK_TAB:
984
return SDL_GetScancodeName(SDL_SCANCODE_TAB);
985
case SDLK_SPACE:
986
return SDL_GetScancodeName(SDL_SCANCODE_SPACE);
987
case SDLK_DELETE:
988
return SDL_GetScancodeName(SDL_SCANCODE_DELETE);
989
990
991
992
993
994
995
996
default:
/* Unaccented letter keys on latin keyboards are normally
labeled in upper case (and probably on others like Greek or
Cyrillic too, so if you happen to know for sure, please
adapt this). */
if (key >= 'a' && key <= 'z') {
key -= 32;
}
997
998
999
1000
end = SDL_UCS4ToUTF8((Uint32) key, name);
*end = '\0';
return name;