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SDL_keyboard.c
923 lines (863 loc) · 19.4 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 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"
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#include "../video/SDL_sysvideo.h"
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/* Global keyboard information */
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typedef struct SDL_Keyboard SDL_Keyboard;
struct SDL_Keyboard
{
/* Data common to all keyboards */
SDL_Window *focus;
Uint16 modstate;
Uint8 keystate[SDL_NUM_SCANCODES];
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SDL_Keycode keymap[SDL_NUM_SCANCODES];
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};
static SDL_Keyboard SDL_keyboard;
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static const SDL_Keycode 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)
{
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SDL_Keyboard *keyboard = &SDL_keyboard;
/* Set the default keymap */
SDL_memcpy(keyboard->keymap, SDL_default_keymap, sizeof(SDL_default_keymap));
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return (0);
}
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void
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SDL_ResetKeyboard(void)
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{
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SDL_Keyboard *keyboard = &SDL_keyboard;
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SDL_Scancode scancode;
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for (scancode = 0; scancode < SDL_NUM_SCANCODES; ++scancode) {
if (keyboard->keystate[scancode] == SDL_PRESSED) {
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SDL_SendKeyboardKey(SDL_RELEASED, scancode);
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}
}
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}
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void
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SDL_GetDefaultKeymap(SDL_Keycode * 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 start, SDL_Keycode * keys, int length)
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{
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SDL_Keyboard *keyboard = &SDL_keyboard;
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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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SDL_Window *
SDL_GetKeyboardFocus(void)
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{
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SDL_Keyboard *keyboard = &SDL_keyboard;
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return keyboard->focus;
}
void
SDL_SetKeyboardFocus(SDL_Window * window)
{
SDL_Keyboard *keyboard = &SDL_keyboard;
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/* See if the current window has lost focus */
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if (keyboard->focus && keyboard->focus != window) {
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SDL_SendWindowEvent(keyboard->focus, SDL_WINDOWEVENT_FOCUS_LOST,
0, 0);
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/* Ensures IME compositions are committed */
if (SDL_EventState(SDL_TEXTINPUT, SDL_QUERY)) {
SDL_VideoDevice *video = SDL_GetVideoDevice();
if (video && video->StopTextInput) {
video->StopTextInput(video);
}
}
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}
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keyboard->focus = window;
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if (keyboard->focus) {
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SDL_SendWindowEvent(keyboard->focus, SDL_WINDOWEVENT_FOCUS_GAINED,
0, 0);
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if (SDL_EventState(SDL_TEXTINPUT, SDL_QUERY)) {
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SDL_VideoDevice *video = SDL_GetVideoDevice();
if (video && video->StartTextInput) {
video->StartTextInput(video);
}
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}
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}
}
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int
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SDL_SendKeyboardKey(Uint8 state, SDL_Scancode scancode)
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{
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SDL_Keyboard *keyboard = &SDL_keyboard;
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int posted;
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Uint16 modstate;
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Uint32 type;
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Uint8 repeat;
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if (!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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keyboard->modstate |= KMOD_RCTRL;
break;
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case SDL_SCANCODE_LSHIFT:
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keyboard->modstate |= KMOD_LSHIFT;
break;
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case SDL_SCANCODE_RSHIFT:
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keyboard->modstate |= KMOD_RSHIFT;
break;
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case SDL_SCANCODE_LALT:
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keyboard->modstate |= KMOD_LALT;
break;
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case SDL_SCANCODE_RALT:
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keyboard->modstate |= KMOD_RALT;
break;
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case SDL_SCANCODE_LGUI:
keyboard->modstate |= KMOD_LGUI;
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break;
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case SDL_SCANCODE_RGUI:
keyboard->modstate |= KMOD_RGUI;
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break;
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case SDL_SCANCODE_MODE:
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keyboard->modstate |= KMOD_MODE;
break;
default:
break;
}
} else {
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switch (scancode) {
case SDL_SCANCODE_NUMLOCKCLEAR:
case SDL_SCANCODE_CAPSLOCK:
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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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keyboard->modstate &= ~KMOD_RCTRL;
break;
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case SDL_SCANCODE_LSHIFT:
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keyboard->modstate &= ~KMOD_LSHIFT;
break;
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case SDL_SCANCODE_RSHIFT:
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keyboard->modstate &= ~KMOD_RSHIFT;
break;
712
case SDL_SCANCODE_LALT:
713
714
keyboard->modstate &= ~KMOD_LALT;
break;
715
case SDL_SCANCODE_RALT:
716
717
keyboard->modstate &= ~KMOD_RALT;
break;
718
719
case SDL_SCANCODE_LGUI:
keyboard->modstate &= ~KMOD_LGUI;
720
break;
721
722
case SDL_SCANCODE_RGUI:
keyboard->modstate &= ~KMOD_RGUI;
723
break;
724
case SDL_SCANCODE_MODE:
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
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;
}
746
/* Drop events that don't change state */
747
repeat = (state && keyboard->keystate[scancode]);
748
if (keyboard->keystate[scancode] == state && !repeat) {
749
#if 0
750
printf("Keyboard event didn't change state - dropped!\n");
751
#endif
752
return 0;
753
754
}
755
756
757
/* Update internal keyboard state */
keyboard->keystate[scancode] = state;
758
759
/* Post the event, if desired */
posted = 0;
760
if (SDL_GetEventState(type) == SDL_ENABLE) {
761
762
763
SDL_Event event;
event.key.type = type;
event.key.state = state;
764
event.key.repeat = repeat;
765
event.key.keysym.scancode = scancode;
766
event.key.keysym.sym = keyboard->keymap[scancode];
767
768
event.key.keysym.mod = modstate;
event.key.keysym.unicode = 0;
769
event.key.windowID = keyboard->focus ? keyboard->focus->id : 0;
770
771
772
773
774
775
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
int
776
SDL_SendKeyboardText(const char *text)
777
{
778
SDL_Keyboard *keyboard = &SDL_keyboard;
779
780
int posted;
781
/* Don't post text events for unprintable characters */
782
if ((unsigned char)*text < ' ' || *text == 127) {
783
784
785
return 0;
}
786
787
/* Post the event, if desired */
posted = 0;
788
if (SDL_GetEventState(SDL_TEXTINPUT) == SDL_ENABLE) {
789
790
SDL_Event event;
event.text.type = SDL_TEXTINPUT;
791
event.text.windowID = keyboard->focus ? keyboard->focus->id : 0;
792
SDL_utf8strlcpy(event.text.text, text, SDL_arraysize(event.text.text));
793
794
795
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
796
797
}
798
int
799
SDL_SendEditingText(const char *text, int start, int length)
800
{
801
SDL_Keyboard *keyboard = &SDL_keyboard;
802
803
804
805
int posted;
/* Post the event, if desired */
posted = 0;
806
if (SDL_GetEventState(SDL_TEXTEDITING) == SDL_ENABLE) {
807
808
SDL_Event event;
event.edit.type = SDL_TEXTEDITING;
809
event.edit.windowID = keyboard->focus ? keyboard->focus->id : 0;
810
811
event.edit.start = start;
event.edit.length = length;
812
SDL_utf8strlcpy(event.edit.text, text, SDL_arraysize(event.edit.text));
813
814
815
816
817
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
818
819
820
821
822
823
824
825
void
SDL_KeyboardQuit(void)
{
}
Uint8 *
SDL_GetKeyboardState(int *numkeys)
{
826
SDL_Keyboard *keyboard = &SDL_keyboard;
827
828
829
830
831
832
833
if (numkeys != (int *) 0) {
*numkeys = SDL_NUM_SCANCODES;
}
return keyboard->keystate;
}
834
SDL_Keymod
835
836
SDL_GetModState(void)
{
837
SDL_Keyboard *keyboard = &SDL_keyboard;
838
839
840
841
842
return keyboard->modstate;
}
void
843
SDL_SetModState(SDL_Keymod modstate)
844
{
845
SDL_Keyboard *keyboard = &SDL_keyboard;
846
847
848
849
keyboard->modstate = modstate;
}
850
SDL_Keycode
851
SDL_GetKeyFromScancode(SDL_Scancode scancode)
852
{
853
SDL_Keyboard *keyboard = &SDL_keyboard;
854
855
856
857
return keyboard->keymap[scancode];
}
858
SDL_Scancode
859
SDL_GetScancodeFromKey(SDL_Keycode key)
860
{
861
SDL_Keyboard *keyboard = &SDL_keyboard;
862
SDL_Scancode scancode;
863
864
865
866
867
868
869
870
871
872
873
for (scancode = SDL_SCANCODE_UNKNOWN; scancode < SDL_NUM_SCANCODES;
++scancode) {
if (keyboard->keymap[scancode] == key) {
return scancode;
}
}
return SDL_SCANCODE_UNKNOWN;
}
const char *
874
SDL_GetScancodeName(SDL_Scancode scancode)
875
876
877
878
879
880
881
882
883
884
{
const char *name = SDL_scancode_names[scancode];
if (name)
return name;
else
return "";
}
const char *
885
SDL_GetKeyName(SDL_Keycode key)
886
887
888
889
890
891
{
static char name[8];
char *end;
if (key & SDLK_SCANCODE_MASK) {
return
892
SDL_GetScancodeName((SDL_Scancode) (key & ~SDLK_SCANCODE_MASK));
893
894
}
895
896
switch (key) {
case SDLK_RETURN:
897
return SDL_GetScancodeName(SDL_SCANCODE_RETURN);
898
case SDLK_ESCAPE:
899
return SDL_GetScancodeName(SDL_SCANCODE_ESCAPE);
900
case SDLK_BACKSPACE:
901
return SDL_GetScancodeName(SDL_SCANCODE_BACKSPACE);
902
case SDLK_TAB:
903
return SDL_GetScancodeName(SDL_SCANCODE_TAB);
904
case SDLK_SPACE:
905
return SDL_GetScancodeName(SDL_SCANCODE_SPACE);
906
case SDLK_DELETE:
907
return SDL_GetScancodeName(SDL_SCANCODE_DELETE);
908
909
910
911
912
913
914
915
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;
}
916
917
918
919
920
end = SDL_UCS4ToUTF8((Uint32) key, name);
*end = '\0';
return name;
}
921
922
}
923
/* vi: set ts=4 sw=4 expandtab: */