Qt c++实现数字雨*

数字雨*"/>

Qt c++实现数字雨*

Qt实现数字雨
运行效果：

头文件：
#ifndef NUMBERRAIN_H
#define NUMBERRAIN_H

#include
#include
#include
#include
#include
#include
#include
#include

#define Qcout qDebug()

//字体大小和移动速度
#define FONT_SIZE 30
#define TIME_SPEED 80

//自定义数字雨类
class Block_Label
{
public:
qint64 Position = 0; //字符显示纵坐标变量
qint32 transparency = 0; //透明度变量
QWidget ParentWidget;
QVector<QLabel> NumberRainTextSingle; //字符数组

 //字符移动排列函数
void NumberRainArrange()
{//标签文本设置字体QFont TempFont;QPalette plt;plt.setColor(QPalette::WindowText, Qt::green);TempFont.setFamily(QStringLiteral("Vineta BT"));//TempFont.setFamily(QStringLiteral("黑体"));TempFont.setPointSize(FONT_SIZE);//初始化标签并随机复制0、1for(int i = 0; i < 40; i++){//生成所有字符//NumberRainTextSingle.append(new QLabel(QString::asprintf("%c", QRandomGenerator::global()->generate()%125), ParentWidget));//生成0 1字符NumberRainTextSingle.append(new QLabel(QString::asprintf("%d", QRandomGenerator::global()->generate()%2), ParentWidget));}//为所有标签设置字体颜色、大小for(int i = 0; i < NumberRainTextSingle.size(); i++){NumberRainTextSingle.at(i)->setFont(TempFont);NumberRainTextSingle.at(i)->setPalette(plt);NumberRainTextSingle.at(i)->setMinimumSize(FONT_SIZE + FONT_SIZE/5,FONT_SIZE + FONT_SIZE/5);}//创建随机纵坐标，移动标签,纵向排列int Postiion_x = (QRandomGenerator::global()->generate() % ParentWidget->width());for(int i = 0; i < NumberRainTextSingle.count(); i++){NumberRainTextSingle.at(i)->move(Postiion_x, (FONT_SIZE + FONT_SIZE/5) * i);}//隐藏标签for(int i = 0; i < NumberRainTextSingle.count(); i++){NumberRainTextSingle.at(i)->hide();}}//字符移动函数
void NumberRainMoveShow()
{//透明度变量transparency = 255;this->NumberRainTextSingle.at(Position++)->show();//为字符设置颜色，透明度for(int i = Position; i >= 0; i -= 1){QPalette plt;QColor clr(21, 255, 21, transparency);plt.setColor(QPalette::WindowText, clr);this->NumberRainTextSingle.at(i)->setPalette(plt);if(transparency > 0){transparency -= 20; //透明度递减}}//字符移出窗口判断if(NumberRainTextSingle.at(Position)->pos().y() > ParentWidget->height()+200){//释放内存for(int i = 0; i < this->NumberRainTextSingle.count(); i++){delete NumberRainTextSingle.at(i);}//清空数组并重新随机生成字符并排雷this->NumberRainTextSingle.clear();this->NumberRainArrange();//在纵向0-20的位置随机生成字符出现纵坐标Position = QRandomGenerator::global()->generate() % 20;}
}

public:
Block_Label(QWidget *parent)
{
this->ParentWidget = parent;
NumberRainArrange();
}

~Block_Label()
{//释放内存for(int i = 0; i < this->NumberRainTextSingle.count(); i++){delete NumberRainTextSingle.at(i);}
}

};

class NumberRain : public QWidget
{
Q_OBJECT
public:
explicit NumberRain(QWidget *parent = nullptr);
~NumberRain();

private:
void StartUp(); //初始化函数
QTimer Timer_Speed; //字符移动速度定时器
QVector<Block_Label> NumberRainTextMulti;

public slots:
void NumberRainStart(); //启动槽函数
void NumberRainStop(); //停止槽函数

signals:

};

#endif // NUMBERRAIN_H

源文件：
#include “numberrain.h”

NumberRain::NumberRain(QWidget *parent)

QWidget{parent}
{
//启动初始化函数
this->StartUp();

//启动定时器
this->NumberRainStart();

}

NumberRain::~NumberRain()
{
//析构释放内存
delete Timer_Speed;
for(int i = 0; i < this->NumberRainTextMulti.count(); i++)
{
delete NumberRainTextMulti.at(i);
}
}

//【初始化函数】****************************************************
void NumberRain::StartUp()
{

//初始化60组数字雨
for(int i = 0; i < 60; i++)
{this->NumberRainTextMulti.append(new Block_Label(this));}//初始化时间，链接信号槽、启动定时器
this->Timer_Speed = new QTimer(this);
connect(this->Timer_Speed, &QTimer::timeout, this, [=]
{for(int i = 0; i < NumberRainTextMulti.count(); i++){this->NumberRainTextMulti.at(i)->NumberRainMoveShow();}});

}

void NumberRain::NumberRainStart()
{
this->Timer_Speed->start(TIME_SPEED);
}

void NumberRain::NumberRainStop()
{
this->Timer_Speed->stop();
}

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