| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | |
| 23 | /** @file SDL_keyboard.h |
| 24 | * Include file for SDL keyboard event handling |
| 25 | */ |
| 26 | |
| 27 | #ifndef _SDL_keyboard_h |
| 28 | #define _SDL_keyboard_h |
| 29 | |
| 30 | #include "SDL_stdinc.h" |
| 31 | #include "SDL_error.h" |
| 32 | #include "SDL_keysym.h" |
| 33 | |
| 34 | #include "begin_code.h" |
| 35 | /* Set up for C function definitions, even when using C++ */ |
| 36 | #ifdef __cplusplus |
| 37 | extern "C" { |
| 38 | #endif |
| 39 | |
| 40 | /** Keysym structure |
| 41 | * |
| 42 | * - The scancode is hardware dependent, and should not be used by general |
| 43 | * applications. If no hardware scancode is available, it will be 0. |
| 44 | * |
| 45 | * - The 'unicode' translated character is only available when character |
| 46 | * translation is enabled by the SDL_EnableUNICODE() API. If non-zero, |
| 47 | * this is a UNICODE character corresponding to the keypress. If the |
| 48 | * high 9 bits of the character are 0, then this maps to the equivalent |
| 49 | * ASCII character: |
| 50 | * @code |
| 51 | * char ch; |
| 52 | * if ( (keysym.unicode & 0xFF80) == 0 ) { |
| 53 | * ch = keysym.unicode & 0x7F; |
| 54 | * } else { |
| 55 | * An international character.. |
| 56 | * } |
| 57 | * @endcode |
| 58 | */ |
| 59 | typedef struct SDL_keysym { |
| 60 | Uint8 scancode; /**< hardware specific scancode */ |
| 61 | SDLKey sym; /**< SDL virtual keysym */ |
| 62 | SDLMod mod; /**< current key modifiers */ |
| 63 | Uint16 unicode; /**< translated character */ |
| 64 | } SDL_keysym; |
| 65 | |
| 66 | /** This is the mask which refers to all hotkey bindings */ |
| 67 | #define SDL_ALL_HOTKEYS 0xFFFFFFFF |
| 68 | |
| 69 | /* Function prototypes */ |
| 70 | /** |
| 71 | * Enable/Disable UNICODE translation of keyboard input. |
| 72 | * |
| 73 | * This translation has some overhead, so translation defaults off. |
| 74 | * |
| 75 | * @param[in] enable |
| 76 | * If 'enable' is 1, translation is enabled. |
| 77 | * If 'enable' is 0, translation is disabled. |
| 78 | * If 'enable' is -1, the translation state is not changed. |
| 79 | * |
| 80 | * @return It returns the previous state of keyboard translation. |
| 81 | */ |
| 82 | extern DECLSPEC int SDLCALL SDL_EnableUNICODE(int enable); |
| 83 | |
| 84 | #define SDL_DEFAULT_REPEAT_DELAY 500 |
| 85 | #define SDL_DEFAULT_REPEAT_INTERVAL 30 |
| 86 | /** |
| 87 | * Enable/Disable keyboard repeat. Keyboard repeat defaults to off. |
| 88 | * |
| 89 | * @param[in] delay |
| 90 | * 'delay' is the initial delay in ms between the time when a key is |
| 91 | * pressed, and keyboard repeat begins. |
| 92 | * |
| 93 | * @param[in] interval |
| 94 | * 'interval' is the time in ms between keyboard repeat events. |
| 95 | * |
| 96 | * If 'delay' is set to 0, keyboard repeat is disabled. |
| 97 | */ |
| 98 | extern DECLSPEC int SDLCALL SDL_EnableKeyRepeat(int delay, int interval); |
| 99 | extern DECLSPEC void SDLCALL SDL_GetKeyRepeat(int *delay, int *interval); |
| 100 | |
| 101 | /** |
| 102 | * Get a snapshot of the current state of the keyboard. |
| 103 | * Returns an array of keystates, indexed by the SDLK_* syms. |
| 104 | * Usage: |
| 105 | * @code |
| 106 | * Uint8 *keystate = SDL_GetKeyState(NULL); |
| 107 | * if ( keystate[SDLK_RETURN] ) //... \<RETURN> is pressed. |
| 108 | * @endcode |
| 109 | */ |
| 110 | extern DECLSPEC Uint8 * SDLCALL SDL_GetKeyState(int *numkeys); |
| 111 | |
| 112 | /** |
| 113 | * Get the current key modifier state |
| 114 | */ |
| 115 | extern DECLSPEC SDLMod SDLCALL SDL_GetModState(void); |
| 116 | |
| 117 | /** |
| 118 | * Set the current key modifier state. |
| 119 | * This does not change the keyboard state, only the key modifier flags. |
| 120 | */ |
| 121 | extern DECLSPEC void SDLCALL SDL_SetModState(SDLMod modstate); |
| 122 | |
| 123 | /** |
| 124 | * Get the name of an SDL virtual keysym |
| 125 | */ |
| 126 | extern DECLSPEC char * SDLCALL SDL_GetKeyName(SDLKey key); |
| 127 | |
| 128 | |
| 129 | /* Ends C function definitions when using C++ */ |
| 130 | #ifdef __cplusplus |
| 131 | } |
| 132 | #endif |
| 133 | #include "close_code.h" |
| 134 | |
| 135 | #endif /* _SDL_keyboard_h */ |