void DateTimeDelegate::paint(QPainter *painter,
const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
const QFileSystemModel *model =
qobject_cast<const QFileSystemModel*>(index.model());
Q_ASSERT(model);
const QDateTime &lastModified = model->lastModified(index);
painter->save();
painter->setRenderHints(QPainter::Antialiasing|
QPainter::TextAntialiasing);
if (option.state & QStyle::State_Selected)
painter->fillRect(option.rect, option.palette.highlight());
const qreal diameter = qMin(option.rect.width(),
option.rect.height());
const QRectF rect = clockRect(option.rect, diameter);
drawClockFace(painter, rect, lastModified);
drawClockHand(painter, rect.center(), diameter / 3.5,
((lastModified.time().hour() +
(lastModified.time().minute() / 60.0))) * 30);
drawClockHand(painter, rect.center(), diameter / 2.5,
lastModified.time().minute() * 6);
drawDate(painter, option, diameter, lastModified);
painter->restore();
}
void AnalogClock::paintEvent(QPaintEvent *event)
{
(void)event; // we need not `event`
static const QPoint hourHand[3] = {
QPoint(7, 8),
QPoint(-7, 8),
QPoint(0, -40)
};
static const QPoint minuteHand[3] = {
QPoint(7, 8),
QPoint(-7, 8),
QPoint(0, -70)
};
static const QPoint secondHand[3] = {
QPoint(3, 8),
QPoint(-3, 8),
QPoint(0, -75),
};
QColor hourColor(127, 0, 127);
QColor minuteColor(0, 127, 127, 190);
QColor secondColor(0, 100, 255, 180);
int side = qMin(width(), height());
QTime time = QTime::currentTime();
// setup painter
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.translate(width() / 2, height() / 2);
painter.scale(side / 200.0, side / 200.0);
// draw clock hour degree
painter.setPen(hourColor);
for (int i = -1; i < 12; i++) {
painter.drawLine(88, 0, 96, 0);
painter.rotate(30.0);
}
// draw clock second degree
painter.setPen(minuteColor);
for(int j = 0; j < 60; ++j) {
if ((j % 5) != 0)
painter.drawLine(92, 0, 96, 0);
painter.rotate(6.0);
}
// draw hour hand
float rotateDegree = 30.0 * ((time.hour() + time.minute() / 60.0));
drawClockHand(painter, rotateDegree, hourHand, 3, hourColor);
// draw minute hand
rotateDegree = 6.0 * (time.minute() + time.second() / 60.0);
drawClockHand(painter, rotateDegree, minuteHand, 3, minuteColor);
// draw second hand
rotateDegree = 6.0 * time.second();
drawClockHand(painter, rotateDegree, secondHand, 3, secondColor);
}
