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/*
* Copyright (C) 2023, KylinSoft Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
**/
#include "clockwidget.h".h"
#include <QTime>
#include <QDebug>
ClockWidget::ClockWidget(QWidget *parent)
: QWidget(parent)
{
// 构造定时器，设置超时为 1 秒
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(update()));
timer->start(1000);
this->setFixedSize(120, 120);
}
ClockWidget::~ClockWidget()
{
}
QRectF ClockWidget::textRectF(double radius, int pointSize, double angle)
{
QRectF rectF;
rectF.setX(radius*qCos(angle*M_PI/180.0) - pointSize*2);
rectF.setY(radius*qSin(angle*M_PI/180.0) - pointSize/2.0);
rectF.setWidth(pointSize * 4);
rectF.setHeight(pointSize + 2);
return rectF;
}
void ClockWidget::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
// 时针、分针、秒针位置 - 多边形
static const QPoint hourHand[3] = {
QPoint(7, 8),
QPoint(-7, 8),
QPoint(0, -65)
};
static const QPoint minuteHand[3] = {
QPoint(7, 8),
QPoint(-7, 8),
QPoint(0, -65)
};
static const QPoint secondHand[3] = {
QPoint(7, 8),
QPoint(-7, 8),
QPoint(0, -80)
};
// 时针、分针、秒针颜色
QColor hourColor(255,0,0, 150);
QColor minuteColor(128,128,128, 150);
QColor secondColor = palette().color(QPalette::Text);
secondColor.setAlpha(120);
int side = qMin(width(), height());
QTime time = QTime::currentTime();
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
// 平移坐标系原点至中心点
painter.translate(width() / 2, height() / 2);
// 缩放
painter.scale(side / 200.0, side / 200.0);
//绘制圆
// QBrush brush;//定义画刷
// brush.setColor(QColor(245,182,96));//设置画刷颜色
// brush.setStyle(Qt::SolidPattern);//设置样式
QPen pen;//定义画笔
pen.setWidth(2);//设置画笔宽度
pen.setColor(QColor(192,192,192));//rgb设置颜色
pen.setStyle(Qt::SolidLine);//设置风格
painter.setPen(pen);//将画笔交给画家
painter.drawEllipse(QPoint(0,0),98,98);//画圆
// 绘制时针
painter.setPen(Qt::NoPen);
painter.setBrush(hourColor);
painter.save();
// 每圈360° = 12h 即：旋转角度 = 小时数 * 30°
painter.rotate(30.0 * ((time.hour() + time.minute() / 60.0)));
painter.drawConvexPolygon(hourHand, 3);
painter.restore();
painter.setPen(hourColor);
// 绘制小时线 （360度 / 12 = 30度）
// for (int i = 0; i < 12; ++i) {
// painter.drawLine(88, 0, 96, 0);
// painter.rotate(30.0);
// }
QColor textColor = palette().color(QPalette::Text);
painter.setPen(textColor);
// painter.setPen(Qt::black);
int radius = 100;
QFont font = painter.font();
font.setBold(true);
painter.setFont(font);
int pointSize = font.pointSize();
// qDebug()<<"pointSize = ="<<font.pointSize();
// 绘制小时文本
int nHour = 0;
for (int i = 0; i < 12; ++i) {
nHour = i + 3;
if (nHour > 12)
nHour -= 12;
painter.drawText(textRectF(radius*0.8, pointSize, i * 30), Qt::AlignCenter, QString::number(nHour));
}
// 绘制分针
painter.setPen(Qt::NoPen);
painter.setBrush(minuteColor);
painter.save();
// 每圈360° = 60m 即：旋转角度 = 分钟数 * 6°
painter.rotate(6.0 * (time.minute() + time.second() / 60.0));
painter.drawConvexPolygon(minuteHand, 3);
painter.restore();
painter.setPen(minuteColor);
// 绘制分钟线 （360度 / 60 = 6度）
// for (int j = 0; j < 60; ++j) {
// if ((j % 5) != 0)
// painter.drawLine(92, 0, 96, 0);
// painter.rotate(6.0);
// }
// 绘制秒针
painter.setPen(Qt::NoPen);
painter.setBrush(secondColor);
painter.save();
// 每圈360° = 60s 即：旋转角度 = 秒数 * 6°
painter.rotate(6.0 * time.second());
painter.drawConvexPolygon(secondHand, 3);
painter.restore();
}
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