time and painter

cpp Mon Dec 07, 2009 5:14 pm

analogclock.h

Code:: #ifndef ANALOGCLOCK_H #define ANALOGCLOCK_H #include <QWidget> class AnalogClock : public QWidget { Q_OBJECT public: AnalogClock(QWidget *parent = 0); protected: void paintEvent(QPaintEvent *event); }; //! [0] #endif

analogclock.cpp

Code:: #include <QtGui> #include "analogclock.h" AnalogClock::AnalogClock(QWidget *parent) : QWidget(parent) { QTimer *timer = new QTimer(this); connect(timer, SIGNAL(timeout()), this, SLOT(update())); timer->start(1000); resize(200, 200); } void AnalogClock::paintEvent(QPaintEvent *event) { /* fungsi ini akan selalu dipanggil/dijalankan setiap detik. */ //membuat jam QTime time = QTime::currentTime(); QString text = time.toString("hh:mm"); if ((time.second() % 2) == 0) text[2] = ' '; //menyimpan lebar dan tinggi int h = height(); int w = width(); //mulai mewarnai QPainter painter(this); QFont font("Monospace", w/4, QFont::DemiBold); painter.setPen(QPen(QBrush("#575555"), 3)); font.setItalic(false); painter.setFont(font); painter.drawText(rect(), Qt::AlignCenter,text); }

main.cpp

Code:: #include <QApplication> #include "analogclock.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); AnalogClock clock; clock.show(); return app.exec(); }