mckeyboard.cpp

keyboard driver example

#include "mckeyboard.h"
MCKeyboard::MCKeyboard() {
	FunctionKeyStatus=NONE;
	fd=get_console_fd(NULL);
	GetKBMode(&OldKBMode);
	tcgetattr(fd,&OldTermios);
	sprintf(Version,"MCLIB0.15");
}
MCKeyboard::~MCKeyboard() {
	SetKBMode(OldKBMode);
	tcsetattr(fd,TCSANOW,&OldTermios);
	close(fd);
}
char *MCKeyboard::GetVersion() {
	return(Version+5);
}
int MCKeyboard::GetHandle() {
	return fd;
}
bool MCKeyboard::Open(int min,int time) {
	struct termios NewTermios;
	if (tcgetattr(fd,&NewTermios))
		return false;
	NewTermios.c_lflag &= ~ (ICANON|ECHO|ISIG);
	NewTermios.c_iflag = 0;
	NewTermios.c_cc[VMIN]=min;
	NewTermios.c_cc[VTIME]=time;
	if (tcsetattr(fd,TCSAFLUSH,&NewTermios))
		return false;
	if (ioctl(fd,KDSKBMODE,K_RAW))
		return false;
	return true;
}
ssize_t MCKeyboard::Read(char *buf,size_t size) {
	ssize_t result;
	result=read(fd,buf,size);
	return result;
}
unsigned short MCKeyboard::GetKeyDown(unsigned char *Status) {
	unsigned short key;
	bool down=false;
	while (!down) {
		key=GetKey();
		switch (key) {
			case 0://Timeout
				down=true;
				break;
			case 0xffff://Error
				down=true;
				break;
			case EXT_SHIFT_UP:
			case EXT_SHIFT_DOWN:
				break;
			case L_CTRL_DOWN:
			case R_CTRL_DOWN:
				SetCtrlDown();
				break;
			case L_ALT_DOWN:
			case R_ALT_DOWN:
				SetAltDown();
				break;
			case L_SHIFT_DOWN:
			case R_SHIFT_DOWN:
				SetShiftDown();
				break;
			case L_CTRL_UP:
			case R_CTRL_UP:
				SetCtrlUp();
				break;
			case L_ALT_UP:
			case R_ALT_UP:
				SetAltUp();
				break;
			case L_SHIFT_UP:
			case R_SHIFT_UP:
				SetShiftUp();
				break;
			default:
				if (IsDown(key)) {
					(*Status)=GetFKeyStatus();
					down=true;
				}
				break;
		}
	}
	return key;
}
unsigned short MCKeyboard::GetKey() {
	unsigned char buf;
	unsigned short key;
	ssize_t result;
	key=0;
	result=Read((char *)&buf,1);
	if (result<0)
		return 0xffff;
	else if (result==0)
		return 0;
	if (buf==EXT) {
		key=buf<<8;
		if (Read((char *)&buf,1)<0)
			return 0xffff;
	}
	key=key+buf;
	return key;
}
bool MCKeyboard::IsUp(unsigned short scancode) {
	unsigned short ret;
	if ((scancode&(0x0000|ISUP))==ISUP) {
		return true;
	} else {
		return false;
	}
}
bool MCKeyboard::IsDown(unsigned short scancode) {
	return (!IsUp(scancode));
}
unsigned char MCKeyboard::GetFKeyStatus() {
	return (FunctionKeyStatus);
}
void MCKeyboard::SetShiftDown() {
	FunctionKeyStatus=FunctionKeyStatus|SHIFT;
}
void MCKeyboard::SetShiftUp() {
	FunctionKeyStatus=FunctionKeyStatus&(~SHIFT);
}
void MCKeyboard::SetAltDown() {
	FunctionKeyStatus=FunctionKeyStatus|ALT;
}
void MCKeyboard::SetAltUp() {
	FunctionKeyStatus=FunctionKeyStatus&(~ALT);
}
void MCKeyboard::SetCtrlDown() {
	FunctionKeyStatus=FunctionKeyStatus|CTRL;
}
void MCKeyboard::SetCtrlUp() {
	FunctionKeyStatus=FunctionKeyStatus&(~CTRL);
}
void MCKeyboard::SetFnDown() {
	FunctionKeyStatus=FunctionKeyStatus|Fn;
}
void MCKeyboard::SetFnUp() {
	FunctionKeyStatus=FunctionKeyStatus&(~Fn);
}
bool MCKeyboard::GetKBMode(int *mode) {
	if (ioctl(fd,KDGKBMODE,mode))
		return false;
	else
		return true;
}
bool MCKeyboard::SetKBMode(int mode) {
	if (ioctl(fd,KDSKBMODE,mode))
		return false;
	else
		return true;
}