重映射自定义键盘

来源：互联网发布：skidmore college知乎编辑：程序博客网时间：2024/04/27 23:13

完成了俄罗斯方块，其中最为困难的是如何重映射自定义键盘，需要修改的是qt-2.3.7/src/kernel/qkeyboard_qws.cpp，在这里添加自定义键盘；参考代码如下

class QWSiMX1KeyboardHandler : public QWSKeyboardHandler

{

Q_OBJECT

public:

QWSiMX1KeyboardHandler();

virtual ~QWSiMX1KeyboardHandler();

private slots:

void readKeyboardData();

private:

unsigned char iMX1_keyVal;

QSocketNotifier *iMX1_notifier;

};

QWSiMX1KeyboardHandler::QWSiMX1KeyboardHandler()

: QWSKeyboardHandler()

{

iMX1_notifier= 0;

kbdFD=open("/dev/i2c-keypad", O_NDELAY);

if (kbdFD>=0){

iMX1_notifier= new QSocketNotifier( kbdFD, QSocketNotifier::Read, this );

}

else{

qWarning("Cannot open /dev/i2c-keypad");

}

connect( iMX1_notifier, SIGNAL(activated(int)),this,

SLOT(readKeyboardData()) );

iMX1_keyVal= 0;

}

QWSiMX1KeyboardHandler::~QWSiMX1KeyboardHandler()

{

if (kbdFD>=0){

::close(kbdFD);

kbdFD=-1;

delete iMX1_notifier;

iMX1_notifier=0;

}

void QWSiMX1KeyboardHandler::readKeyboardData()

{

int keyCode= Qt::Key_unknown;

read(kbdFD, &iMX1_keyVal, 1);

//qDebug("iMX1_keyVal=%d", int(iMX1_keyVal));

switch (iMX1_keyVal)

{

case 251: keyCode= Qt::Key_Up; break;

case 191: keyCode= Qt::Key_Down; break;

case 127: keyCode= Qt::Key_Left; break;

case 223: keyCode= Qt::Key_Right; break;

case 247: keyCode= Qt::Key_F1; break;

case 253: keyCode= Qt::Key_F2; break;

case 255: break;

default: qWarning("unrecognised iMX1_keyVal %d", int(iMX1_keyVal));

}

processKeyEvent( 0, keyCode, 0, true, false );

}

包括，对自定义键盘类的申明，构造函数，析构函数和readKeyboardData()函数。

还需要在QWSKeyboardHandler *QWSServer::newKeyboardHandler( const QString &spec )函数中添加：handler= new QWSiMX1KeyboardHandler();实例化自定义的键盘类。