本文实例为大家分享了Qt实现樱花飞舞效果的具体代码,供大家参考,具体内容如下
应女友要求,使用Qt做了一个在电脑桌面樱花飞舞的小程序。这里面用到了Qt动画效果QPropertyAnimation类来控制飞舞效果。使用label加载樱花图案。大概的核心代码如下:
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Widget::Widget(QWidget *parent) :
QWidget(parent),
timer( new QTimer( this )),
pixmap( new QPixmap( ":/cherry.png" )),
ui( new Ui::Widget)
{
ui->setupUi( this );
setWindowFlags(Qt::FramelessWindowHint | windowFlags()); //去除窗体标题
this ->resize(qApp->desktop()->availableGeometry().size());
this ->setAttribute(Qt::WA_TranslucentBackground, true ); //设置背景透明
this ->setAutoFillBackground( true );
this ->setWindowFlags( this ->windowFlags() | Qt::WindowStaysOnTopHint); //窗口总在最顶层
connect(timer,SIGNAL(timeout()), this ,SLOT(start()));
QPixmap *pixmap = new QPixmap( ":/cherry.png" );
pixmap->scaled(ui->label->size(), Qt::KeepAspectRatio);
pixmaps.append(pixmap);
pixmap = new QPixmap( ":/cherry2.png" );
pixmap->scaled(ui->label->size(), Qt::KeepAspectRatio);
pixmaps.append(pixmap);
pixmap = new QPixmap( ":/cherry3.png" );
pixmap->scaled(ui->label->size(), Qt::KeepAspectRatio);
pixmaps.append(pixmap);
pixmap = new QPixmap( ":/cherry4.png" );
pixmap->scaled(ui->label->size(), Qt::KeepAspectRatio);
pixmaps.append(pixmap);
pixmap = new QPixmap( ":/cherry5.png" );
pixmap->scaled(ui->label->size(), Qt::KeepAspectRatio);
pixmaps.append(pixmap);
creatLabels();
createAnimation();
timer->start(1000);
}
//批量创建樱花标签
void Widget::creatLabels()
{
for ( int i = 0; i < cherryNums;i++)
{
QLabel *label = new QLabel( this );
label->setScaledContents( true );
label->setPixmap(*pixmaps[i%pixmaps.size()]);
label->setAttribute(Qt::WA_TranslucentBackground, true );
label->resize(0,0);
labs .append(label);
}
}
//批量创建樱花动画
void Widget::createAnimation()
{
if ( labs .empty())
return ;
QVector< int > rnds = generateRandomNumber( labs .size()*2);
for ( int i = 0;i < labs .size();i++)
{
QPropertyAnimation *ani = new QPropertyAnimation( this );
ani->setTargetObject( labs [i]);
ani->setPropertyName( "geometry" );
ani->setDuration(10000);
ani->setLoopCount(-1); //无限循环
ani->setStartValue(QRect(rnds[i*2],0,200,60));
ani->setEndValue(QRect(rnds[2*i+1], this ->height()-50,200,60));
animations.append(ani);
}
}
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效果如下图所示:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/cfqcfqcfqcfqcfq/article/details/80084751