Qt--动效界面截图

一、效果展示

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二、具体代码

#ifndef
#define

#include <QMainWindow>
#include <QLabel>
#include <QScreen>
#include <QDesktopWidget>
#include <QPixmap>
#include <QCoreApplication>
#include <QApplication>
#include <QDebug>
#include <QPropertyAnimation>
#include <QParallelAnimationGroup>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
    void msecSleep(int msec);

private slots:
    void on_pushButton_clicked();
    void animation_finished();

private:
    Ui::MainWindow *ui;
    QLabel* m_shot_label;
    QPixmap m_shot_picture;
};
#endif// MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{
    m_shot_label = new QLabel(this);
    m_shot_label->resize(this->width(),this->height());
    m_shot_label->setStyleSheet("border: 2px dashed black;");
    //m_shot_picture = QPixmap::grabWidget(this);
    m_shot_picture = this->grab();
    m_shot_label->setPixmap(m_shot_picture);
    m_shot_label->show();

    QPropertyAnimation* animation1 = new QPropertyAnimation(m_shot_label,"geometry");
    animation1->setDuration(1000);
    animation1->setEasingCurve(QEasingCurve::InOutExpo);
    animation1->setStartValue(QRect(0,0,m_shot_label->width(),m_shot_label->height()));
    animation1->setEndValue(QRect(3*m_shot_label->width()/4,0,m_shot_label->width()/4,m_shot_label->height()/4));
    animation1->start();

    connect(animation1,SIGNAL(finished()),this,SLOT(animation_finished()));
}

void MainWindow::animation_finished()
{
    QDateTime current_date_time =QDateTime::currentDateTime();
    QString current_date =current_date_time.toString("yyyy_MM_dd_hh_mm_ss");
    m_shot_picture.save(QCoreApplication::applicationDirPath()+"/ShotCut"+current_date+".jpg");

    msecSleep(1000);
    delete m_shot_label;
    m_shot_label = nullptr;
}

void MainWindow::msecSleep(int msec)
{
    QTime dieTime = QTime::currentTime().addMSecs(msec);
    while( QTime::currentTime() <dieTime )
    QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
}