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scummvm/common/keyboard.h
Johannes Schickel 854e22b38b COMMON: Make GPL headers consistent in themselves.
2014-02-18 02:39:33 +01:00

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef COMMON_KEYBOARD_H
#define COMMON_KEYBOARD_H
#include "common/scummsys.h"
#if defined(__amigaos4__)
// KEYCODE_LESS and KEYCODE_GREATER are already defined in AmigaOS, inside
// include/include_h/intuition/intuition.h (bug #3121350)
#if defined(KEYCODE_LESS) && defined(KEYCODE_GREATER)
#undef KEYCODE_LESS
#undef KEYCODE_GREATER
#endif
#endif
namespace Common {
enum KeyCode {
KEYCODE_INVALID = 0,
KEYCODE_BACKSPACE = 8,
KEYCODE_TAB = 9,
KEYCODE_CLEAR = 12,
KEYCODE_RETURN = 13,
KEYCODE_PAUSE = 19,
KEYCODE_ESCAPE = 27,
KEYCODE_SPACE = 32,
KEYCODE_EXCLAIM = 33, // !
KEYCODE_QUOTEDBL = 34, // "
KEYCODE_HASH = 35, // #
KEYCODE_DOLLAR = 36, // $
KEYCODE_AMPERSAND = 38, // &
KEYCODE_QUOTE = 39, // '
KEYCODE_LEFTPAREN = 40,
KEYCODE_RIGHTPAREN = 41,
KEYCODE_ASTERISK = 42, // *
KEYCODE_PLUS = 43,
KEYCODE_COMMA = 44,
KEYCODE_MINUS = 45,
KEYCODE_PERIOD = 46,
KEYCODE_SLASH = 47,
KEYCODE_0 = 48,
KEYCODE_1 = 49,
KEYCODE_2 = 50,
KEYCODE_3 = 51,
KEYCODE_4 = 52,
KEYCODE_5 = 53,
KEYCODE_6 = 54,
KEYCODE_7 = 55,
KEYCODE_8 = 56,
KEYCODE_9 = 57,
KEYCODE_COLON = 58,
KEYCODE_SEMICOLON = 59,
KEYCODE_LESS = 60,
KEYCODE_EQUALS = 61,
KEYCODE_GREATER = 62,
KEYCODE_QUESTION = 63,
KEYCODE_AT = 64,
KEYCODE_LEFTBRACKET = 91,
KEYCODE_BACKSLASH = 92,
KEYCODE_RIGHTBRACKET= 93,
KEYCODE_CARET = 94,
KEYCODE_UNDERSCORE = 95,
KEYCODE_BACKQUOTE = 96,
KEYCODE_a = 97,
KEYCODE_b = 98,
KEYCODE_c = 99,
KEYCODE_d = 100,
KEYCODE_e = 101,
KEYCODE_f = 102,
KEYCODE_g = 103,
KEYCODE_h = 104,
KEYCODE_i = 105,
KEYCODE_j = 106,
KEYCODE_k = 107,
KEYCODE_l = 108,
KEYCODE_m = 109,
KEYCODE_n = 110,
KEYCODE_o = 111,
KEYCODE_p = 112,
KEYCODE_q = 113,
KEYCODE_r = 114,
KEYCODE_s = 115,
KEYCODE_t = 116,
KEYCODE_u = 117,
KEYCODE_v = 118,
KEYCODE_w = 119,
KEYCODE_x = 120,
KEYCODE_y = 121,
KEYCODE_z = 122,
KEYCODE_DELETE = 127,
KEYCODE_TILDE = 176, // ~
// Numeric keypad
KEYCODE_KP0 = 256,
KEYCODE_KP1 = 257,
KEYCODE_KP2 = 258,
KEYCODE_KP3 = 259,
KEYCODE_KP4 = 260,
KEYCODE_KP5 = 261,
KEYCODE_KP6 = 262,
KEYCODE_KP7 = 263,
KEYCODE_KP8 = 264,
KEYCODE_KP9 = 265,
KEYCODE_KP_PERIOD = 266,
KEYCODE_KP_DIVIDE = 267,
KEYCODE_KP_MULTIPLY = 268,
KEYCODE_KP_MINUS = 269,
KEYCODE_KP_PLUS = 270,
KEYCODE_KP_ENTER = 271,
KEYCODE_KP_EQUALS = 272,
// Arrows + Home/End pad
KEYCODE_UP = 273,
KEYCODE_DOWN = 274,
KEYCODE_RIGHT = 275,
KEYCODE_LEFT = 276,
KEYCODE_INSERT = 277,
KEYCODE_HOME = 278,
KEYCODE_END = 279,
KEYCODE_PAGEUP = 280,
KEYCODE_PAGEDOWN = 281,
// Function keys
KEYCODE_F1 = 282,
KEYCODE_F2 = 283,
KEYCODE_F3 = 284,
KEYCODE_F4 = 285,
KEYCODE_F5 = 286,
KEYCODE_F6 = 287,
KEYCODE_F7 = 288,
KEYCODE_F8 = 289,
KEYCODE_F9 = 290,
KEYCODE_F10 = 291,
KEYCODE_F11 = 292,
KEYCODE_F12 = 293,
KEYCODE_F13 = 294,
KEYCODE_F14 = 295,
KEYCODE_F15 = 296,
// Key state modifier keys
KEYCODE_NUMLOCK = 300,
KEYCODE_CAPSLOCK = 301,
KEYCODE_SCROLLOCK = 302,
KEYCODE_RSHIFT = 303,
KEYCODE_LSHIFT = 304,
KEYCODE_RCTRL = 305,
KEYCODE_LCTRL = 306,
KEYCODE_RALT = 307,
KEYCODE_LALT = 308,
KEYCODE_RMETA = 309,
KEYCODE_LMETA = 310,
KEYCODE_LSUPER = 311, // Left "Windows" key
KEYCODE_RSUPER = 312, // Right "Windows" key
KEYCODE_MODE = 313, // "Alt Gr" key
KEYCODE_COMPOSE = 314, // Multi-key compose key
// Miscellaneous function keys
KEYCODE_HELP = 315,
KEYCODE_PRINT = 316,
KEYCODE_SYSREQ = 317,
KEYCODE_BREAK = 318,
KEYCODE_MENU = 319,
KEYCODE_POWER = 320, // Power Macintosh power key
KEYCODE_EURO = 321, // Some european keyboards
KEYCODE_UNDO = 322 // Atari keyboard has Undo
};
/**
* List of certain special and some fake 'ascii' values used in keyboard events.
* The values for the function keys listed here are based on what certain SCUMM
* games expect in their scripts.
* @todo Get rid of the function key values, and instead enforce that engines use
* the keycode value to handle these.
*/
enum {
ASCII_BACKSPACE = 8,
ASCII_TAB = 9,
ASCII_RETURN = 13,
ASCII_ESCAPE = 27,
ASCII_SPACE = 32,
ASCII_F1 = 315,
ASCII_F2 = 316,
ASCII_F3 = 317,
ASCII_F4 = 318,
ASCII_F5 = 319,
ASCII_F6 = 320,
ASCII_F7 = 321,
ASCII_F8 = 322,
ASCII_F9 = 323,
ASCII_F10 = 324,
ASCII_F11 = 325,
ASCII_F12 = 326
};
/**
* Keyboard modifier flags, used for Event::kbd::flags.
*/
enum {
// Non-sticky modifier flags
KBD_CTRL = 1 << 0,
KBD_ALT = 1 << 1,
KBD_SHIFT = 1 << 2,
KBD_META = 1 << 3,
KBD_NON_STICKY = (KBD_CTRL|KBD_ALT|KBD_SHIFT|KBD_META),
// Sticky modifier flags
KBD_NUM = 1 << 4,
KBD_CAPS = 1 << 5,
KBD_SCRL = 1 << 6,
KBD_STICKY = (KBD_NUM|KBD_CAPS|KBD_SCRL)
};
/**
* Keyboard status, as used in the Event struct.
*/
struct KeyState {
/**
* Abstract key code (will be the same for any given key regardless
* of modifiers being held at the same time.
*/
KeyCode keycode;
/**
* ASCII-value of the pressed key (if any).
* This depends on modifiers, i.e. pressing the 'A' key results in
* different values here depending on the status of shift, alt and
* caps lock. This should be used rather than keycode for text input
* to avoid keyboard layout issues. For example you cannot assume that
* KEYCODE_0 without a modifier will be '0' (on AZERTY keyboards it is
* not).
*/
uint16 ascii;
/**
* Status of the modifier keys. Bits are set in this for each
* pressed modifier.
* We distinguish 'non-sticky' and 'sticky' modifiers flags. The former
* are only set while certain keys (ctrl, alt, shift) are pressed by the
* user; the latter (num lock, caps lock, scroll lock) are activated when
* certain keys are pressed and released; and deactivated when that key
* is pressed and released a second time.
*
* @see KBD_CTRL, KBD_ALT, KBD_SHIFT, KBD_NUM, KBD_CAPS, KBD_SCRL
*/
byte flags;
KeyState(KeyCode kc = KEYCODE_INVALID) {
keycode = kc;
ascii = (uint16)kc;
flags = 0;
}
KeyState(KeyCode kc, uint16 asc, byte f = 0) {
keycode = kc;
ascii = asc;
flags = f;
}
void reset() {
keycode = KEYCODE_INVALID;
ascii = flags = 0;
}
/**
* Check whether the non-sticky flags are *exactly* as specified by f.
* This ignores the sticky flags (KBD_NUM, KBD_CAPS, KBD_SCRL).
* Sticky flags should never be passed to this function.
* If you just want to check whether a modifier flag is set, just bit-and
* the flag. E.g. to check whether the control key modifier is set,
* you can write
* if (keystate.flags & KBD_CTRL) { ... }
*/
bool hasFlags(byte f) const {
assert(!(f & KBD_STICKY));
return f == (flags & ~KBD_STICKY);
}
/**
* Check if two key states are equal. This implementation ignores the state
* of the sticky flags (caps lock, num lock, scroll lock) completely. This
* functionality is currently only used by the keymapper.
*/
bool operator==(const KeyState &x) const {
// Intentionally ignore ASCII, as the keycode and non-sticky flag
// combination should suffice.
return keycode == x.keycode && hasFlags(x.flags & ~KBD_STICKY);
}
};
} // End of namespace Common
#endif
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