仿华为手机时钟效果

我的手机时钟效果如下图所示，分为指针式和转盘式，可以通过触摸进行切换。

　　　

1、在仿造时钟效果之前需要先准备好所有图片素材

 

 2、指针时钟工作的过程实际上可以理解为时针、分针、秒针分别按照时间的变化来改变指针旋转的角度。

　　而转盘时钟可以理解为外圈每一秒钟旋转一次。只不过中间需要计算好每一次旋转的角度大小。

3、具体的实现过程比较简单，使用paintEvent和mousePressEvent 搭配定时器连接时钟计算槽函数即可完成。

　　具体代码如下：

widget.h

#ifndef WIDGET_H

#define WIDGET_H

#include <QWidget>

#include <QPainter>

#include <QPaintDevice>

#include <QPaintEvent>

#include <QPixmap>

#include <QTimer>

#include <QDateTime>

#include <QDebug>

#include <QLabel>

#include <QGridLayout>

#include <QVBoxLayout>

#include <QHBoxLayout>

namespace Ui {

class Widget;

}

class Widget : public QWidget

{

    Q_OBJECT

public:

    explicit Widget(QWidget *parent = 0);

    ~Widget();

    void paintEvent(QPaintEvent *event);

    void mousePressEvent(QMouseEvent *event);

public slots:

    void show_time();

private:

    Ui::Widget *ui;

     QPixmap pixmap;

     QLabel *label;

     QString text0;

     QString text1;

     QString text2;

     QGridLayout *GLayout;

     bool turn = true;  //用于两种页面之间的转换 ，true为钟表，false为转圈

     int HOUR = 0;

     int MINUTE = 0;

     int SECOND = 0;

     int HOURANL = 0;

     int MINUTEANL = 0;

     int SECONDANL = 0;

};

#endif // WIDGET_H


widget.cpp

#include "widget.h"

#include "ui_widget.h"

Widget::Widget(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Widget)

{

    ui->setupUi(this);

    label = new QLabel();

    GLayout = new QGridLayout(this);

    this->setFixedSize(300,307);

    this->setWindowTitle("华为手机时钟高仿");

    this->setWindowIcon(QIcon(":/clock/转圈0.png"));

    QTimer *timer = new QTimer();

    timer->setInterval(1000);

    timer->start();

    connect(timer,SIGNAL(timeout()),this,SLOT(show_time()));

}

void Widget::paintEvent(QPaintEvent *event)

{

    if(turn)

    {

        label->clear();

        if(HOUR >= 0 && HOUR <= 17)

        {

            QPixmap pixmap(":/clock/表盘.png");

            QPalette palette = this->palette();

            palette.setBrush(QPalette::Background,QBrush(pixmap));

            this->setPalette(palette);

        }

        else

        {

            QPixmap pixmap(":/clock/夜间表盘.png");

            QPalette palette = this->palette();

            palette.setBrush(QPalette::Background,QBrush(pixmap));

            this->setPalette(palette);

        }

        if(HOUR >= 0 && HOUR <= 17)

        {

            pixmap.load(":/clock/时针.png");

        }

        else

        {

            pixmap.load(":/clock/夜间时针.png");

        }

        QPainter *P = new QPainter(this);

        P->setRenderHint(QPainter::Antialiasing,true);

        P->setRenderHint(QPainter::SmoothPixmapTransform,true);

        P->save();

        P->translate(150,153);//指针中心放置坐标

        P->rotate(HOURANL);//旋转一定的角度

        P->drawPixmap(-150,-153,300,307,pixmap);//指针的旋转中心坐标和图片长宽

        P->restore();//使原点复原

        if(HOUR >= 0 && HOUR <= 17)

        {

            pixmap.load(":/clock/分针.png");

        }

        else

        {

            pixmap.load(":/clock/夜间分针.png");

        }

        QPainter *PM = new QPainter(this);

        PM->setRenderHint(QPainter::Antialiasing,true);

        PM->setRenderHint(QPainter::SmoothPixmapTransform,true);

        PM->save();

        PM->translate(150,153);//指针中心放置坐标

        PM->rotate(MINUTEANL);//旋转一定的角度

        PM->drawPixmap(-150,-153,300,307,pixmap);//指针的旋转中心坐标和图片长宽

        PM->restore();//使原点复原

        pixmap.load(":/clock/秒针.png");

        QPainter *PS = new QPainter(this);

        PS->setRenderHint(QPainter::Antialiasing,true);

        PS->setRenderHint(QPainter::SmoothPixmapTransform,true);

        PS->save();

        PS->translate(150,153);//指针中心放置坐标

        PS->rotate(SECONDANL);//旋转一定的角度

        PS->drawPixmap(-149,-152,300,307,pixmap);//指针的旋转中心坐标和图片长宽

        PS->restore();//使原点复原

    }

    else

    {

        QPixmap pixmap(":/clock/背景.png");

        QPalette palette = this->palette();

        palette.setBrush(QPalette::Background,QBrush(pixmap));

        this->setPalette(palette);

        if(HOUR > 0 && HOUR <= 6)

        {

            pixmap.load(":/clock/转圈0.png");

        }

        else if(HOUR > 6 && HOUR <= 12)

        {

            pixmap.load(":/clock/转圈1.png");

        }

        else if(HOUR > 12 && HOUR <= 18)

        {

            pixmap.load(":/clock/转圈2.png");

        }

        else

        {

            pixmap.load(":/clock/转圈3.png");

        }

        QPainter *PS0 = new QPainter(this);

        PS0->setRenderHint(QPainter::Antialiasing,true);

        PS0->setRenderHint(QPainter::SmoothPixmapTransform,true);

        PS0->save();

        PS0->translate(150,153);//指针中心放置坐标

        PS0->rotate(SECONDANL);//旋转一定的角度

        PS0->drawPixmap(-149,-152,300,307,pixmap);//指针的旋转中心坐标和图片长宽

        PS0->restore();//使原点复原

        QString time = text0 + ":" + text1;

        label->setFixedSize(120,50);

        label->setFont(QFont(time,28));

        label->setText(time);

        label->update();

        GLayout->addWidget(label,120,200);

    }

    this->update();//刷新界面

}

void Widget::mousePressEvent(QMouseEvent *event)

{

    turn = !turn;

}

void Widget::show_time()

{

    QDateTime time = QDateTime::currentDateTime();

    text0 = time.toString("hh");

    text1 = time.toString("mm");

    text2 = time.toString("ss");

    HOUR = text0.toInt();

    MINUTE = text1.toInt();

    SECOND = text2.toInt();

    qDebug()<<HOUR<<":"<<MINUTE<<":"<<SECOND;

    MINUTEANL = 6*MINUTE;

    SECONDANL = 6*SECOND;

    HOURANL = ((30*HOUR) + (MINUTEANL/10));

}

Widget::~Widget()

{

    delete ui;

}

4、图片素材：