qt 动画效果启动酷炫界面

#include "initwidget.h" #include "ui_initwidget.h" InitWidget::InitWidget(QWidget *parent) : QWidget(parent), ui(new Ui::InitWidget) { ui->setupUi(this); //设置窗体标题栏隐藏并设置位于顶层 this->setWindowOpacity(1); this->setWindowFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint); this->setAttribute(Qt::WA_TranslucentBackground); _w = this->width(); _h = this->height(); load_time = new QTimer(this); connect(load_time, SIGNAL(timeout()), this, SLOT(loading())); load_time->start(6); count_time = new QTimer(this); connect(count_time, SIGNAL(timeout()), this, SLOT(count_show())); count_time->start(1111); dig = 0; _count = 5; ui->label->setText(QString::number(_count) ); QDesktopWidget *deskdop = QApplication::desktop(); //move((deskdop->width() - m.width())/2, (deskdop->height() - m.height())/2); } InitWidget::~InitWidget() { delete count_time; delete load_time; delete ui; } void InitWidget::mousePressEvent(QMouseEvent *event){ this->windowPos = this->pos(); this->mousePos = event->globalPos(); this->dPos = mousePos - windowPos; } void InitWidget::mouseMoveEvent(QMouseEvent *event){ this->move(event->globalPos() - this->dPos); } void InitWidget::loading() { clockwise(); } void InitWidget::count_show() { _count--; ui->label->setText(QString::number(_count)); if(_count<=0) { this->close(); } } //顺时针旋转 void InitWidget::clockwise() { update(); } void InitWidget::paintEvent(QPaintEvent *) { QPainter painter(this); painter.setRenderHint(QPainter::Antialiasing, true); QPixmap pix; pix.load(":/new/prefix1/images/intiloading.png"); painter.translate(_w/2,_h/2); //让图片的中心作为旋转的中心 painter.rotate(dig); //顺时针旋转90度 painter.translate(-_w/2,-_h/2); //使原点复原 painter.drawPixmap(0,0,_w,_h,pix); dig++; if(dig>=360) { dig = 0; } }