ledclock

ledclock

 

ledclock总共包含三个文件：digiclock.h,digiclock.cpp,main.cpp

 

三个文件的代码分别如下：

 

digiclock.h:

 

#ifndef DIGICLOCK_H
#define DIGICLOCK_H

#include

class DigiClock : public QLCDNumber
{
    Q_OBJECT
public:
    DigiClock(QWidget *parent=0);
   
    void mousePressEvent(QMouseEvent *);
    void mouseMoveEvent(QMouseEvent *);

public slots:  
    void showTime();
   
private:
    QPoint dragPosition;
    bool showColon;
   
};

#endif

digiclock.cpp:

 

#include "digiclock.h"

DigiClock::DigiClock(QWidget *parent)
 : QLCDNumber(parent)
{
    QPalette p = palette();
    p.setColor(QPalette::Window,Qt::red);
    setPalette(p);
   
    setWindowFlags(Qt::FramelessWindowHint);

    setWindowOpacity(0.5);
   
    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(showTime()));
    timer->start(500);

    showTime();

    resize(100, 40);

 showColon=true;
}

void DigiClock::showTime()
{
     QTime time = QTime::currentTime();
     QString text = time.toString("hh:mm");
     if(showColon)
     {
      text[2] = ':';
      showColon = false;
     }
     else
     {
      text[2] = ' ';
      showColon = true;      
     }
     display(text);
}
 
void DigiClock::mousePressEvent(QMouseEvent * e)
{
    if (e->button() == Qt::LeftButton)
    {
     dragPosition = e->globalPos() - frameGeometry().topLeft();
     e->accept();
    }
    if (e->button() == Qt::RightButton)
    {
     close();
    }   
}

void DigiClock::mouseMoveEvent(QMouseEvent * e)
{
    if (e->buttons() & Qt::LeftButton)
    {
     move(e->globalPos() - dragPosition);
     e->accept();
    }
}

 

 

main.cpp:

 

 

#include
#include "digiclock.h"

int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
    DigiClock clock;
    clock.show();
    return app.exec();
}

 

 

效果如下：

 

 

 

文件:	digiclock.rar
大小:	35KB
下载:	下载