Created
February 6, 2014 06:20
-
-
Save proteneer/8839171 to your computer and use it in GitHub Desktop.
Keyboard events Linux
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#define LINUX | |
#ifndef LINUX | |
#include <conio.h> /* kbhit(), getch() */ | |
#else | |
#include <sys/time.h> /* struct timeval, select() */ | |
/* ICANON, ECHO, TCSANOW, struct termios */ | |
#include <termios.h> /* tcgetattr(), tcsetattr() */ | |
#include <cstdlib> /* atexit(), exit() */ | |
#include <unistd.h> /* read() */ | |
#include <cstdio> /* printf() */ | |
#include <cstring> | |
#include <iostream> | |
using namespace std; | |
static struct termios g_old_kbd_mode; | |
/***************************************************************************** | |
*****************************************************************************/ | |
static void cooked(void) | |
{ | |
tcsetattr(0, TCSANOW, &g_old_kbd_mode); | |
} | |
/***************************************************************************** | |
*****************************************************************************/ | |
static void raw(void) | |
{ | |
static char init; | |
/**/ | |
struct termios new_kbd_mode; | |
if(init) | |
return; | |
/* put keyboard (stdin, actually) in raw, unbuffered mode */ | |
tcgetattr(0, &g_old_kbd_mode); | |
memcpy(&new_kbd_mode, &g_old_kbd_mode, sizeof(struct termios)); | |
new_kbd_mode.c_lflag &= ~(ICANON | ECHO); | |
new_kbd_mode.c_cc[VTIME] = 0; | |
new_kbd_mode.c_cc[VMIN] = 1; | |
tcsetattr(0, TCSANOW, &new_kbd_mode); | |
/* when we exit, go back to normal, "cooked" mode */ | |
atexit(cooked); | |
init = 1; | |
} | |
/***************************************************************************** | |
*****************************************************************************/ | |
void changemode(int dir) | |
{ | |
static struct termios oldt, newt; | |
if ( dir == 1 ) | |
{ | |
tcgetattr( STDIN_FILENO, &oldt); | |
newt = oldt; | |
newt.c_lflag &= ~( ICANON | ECHO ); | |
tcsetattr( STDIN_FILENO, TCSANOW, &newt); | |
} | |
else | |
tcsetattr( STDIN_FILENO, TCSANOW, &oldt); | |
} | |
int kbhit (void) | |
{ | |
struct timeval tv; | |
fd_set rdfs; | |
tv.tv_sec = 0; | |
tv.tv_usec = 0; | |
FD_ZERO(&rdfs); | |
FD_SET (STDIN_FILENO, &rdfs); | |
select(STDIN_FILENO+1, &rdfs, NULL, NULL, &tv); | |
return FD_ISSET(STDIN_FILENO, &rdfs); | |
} | |
/***************************************************************************** | |
*****************************************************************************/ | |
static int getch(void) | |
{ | |
unsigned char temp; | |
raw(); | |
/* stdin = fd 0 */ | |
if(read(0, &temp, 1) != 1) | |
return 0; | |
return temp; | |
} | |
#endif | |
int main() { | |
changemode(1); | |
while(true) { | |
if(kbhit()) { | |
cout << "keyboard event: " << char(getch()) << endl; | |
} | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment