/
SDL_keyboard.h
135 lines (116 loc) · 4 KB
/
SDL_keyboard.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2012 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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
Lesser General Public License for more details.
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
Sam Lantinga
slouken@libsdl.org
*/
/** @file SDL_keyboard.h
* Include file for SDL keyboard event handling
*/
#ifndef _SDL_keyboard_h
#define _SDL_keyboard_h
#include "SDL_stdinc.h"
#include "SDL_error.h"
#include "SDL_keysym.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
/** Keysym structure
*
* - The scancode is hardware dependent, and should not be used by general
* applications. If no hardware scancode is available, it will be 0.
*
* - The 'unicode' translated character is only available when character
* translation is enabled by the SDL_EnableUNICODE() API. If non-zero,
* this is a UNICODE character corresponding to the keypress. If the
* high 9 bits of the character are 0, then this maps to the equivalent
* ASCII character:
* @code
* char ch;
* if ( (keysym.unicode & 0xFF80) == 0 ) {
* ch = keysym.unicode & 0x7F;
* } else {
* An international character..
* }
* @endcode
*/
typedef struct SDL_keysym {
Uint8 scancode; /**< hardware specific scancode */
SDLKey sym; /**< SDL virtual keysym */
SDLMod mod; /**< current key modifiers */
Uint16 unicode; /**< translated character */
} SDL_keysym;
/** This is the mask which refers to all hotkey bindings */
#define SDL_ALL_HOTKEYS 0xFFFFFFFF
/* Function prototypes */
/**
* Enable/Disable UNICODE translation of keyboard input.
*
* This translation has some overhead, so translation defaults off.
*
* @param[in] enable
* If 'enable' is 1, translation is enabled.
* If 'enable' is 0, translation is disabled.
* If 'enable' is -1, the translation state is not changed.
*
* @return It returns the previous state of keyboard translation.
*/
extern DECLSPEC int SDLCALL SDL_EnableUNICODE(int enable);
#define SDL_DEFAULT_REPEAT_DELAY 500
#define SDL_DEFAULT_REPEAT_INTERVAL 30
/**
* Enable/Disable keyboard repeat. Keyboard repeat defaults to off.
*
* @param[in] delay
* 'delay' is the initial delay in ms between the time when a key is
* pressed, and keyboard repeat begins.
*
* @param[in] interval
* 'interval' is the time in ms between keyboard repeat events.
*
* If 'delay' is set to 0, keyboard repeat is disabled.
*/
extern DECLSPEC int SDLCALL SDL_EnableKeyRepeat(int delay, int interval);
extern DECLSPEC void SDLCALL SDL_GetKeyRepeat(int *delay, int *interval);
/**
* Get a snapshot of the current state of the keyboard.
* Returns an array of keystates, indexed by the SDLK_* syms.
* Usage:
* @code
* Uint8 *keystate = SDL_GetKeyState(NULL);
* if ( keystate[SDLK_RETURN] ) //... \<RETURN> is pressed.
* @endcode
*/
extern DECLSPEC Uint8 * SDLCALL SDL_GetKeyState(int *numkeys);
/**
* Get the current key modifier state
*/
extern DECLSPEC SDLMod SDLCALL SDL_GetModState(void);
/**
* Set the current key modifier state.
* This does not change the keyboard state, only the key modifier flags.
*/
extern DECLSPEC void SDLCALL SDL_SetModState(SDLMod modstate);
/**
* Get the name of an SDL virtual keysym
*/
extern DECLSPEC char * SDLCALL SDL_GetKeyName(SDLKey key);
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
#endif /* _SDL_keyboard_h */