c++ - Qt中如何多次显示一组动画？

Question

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

#include <QMessageBox>
#include <QPushButton>


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

    m_animation = new QPropertyAnimation(ui->label, "geometry");

    startAnimation();
}

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

void MainWindow::startAnimation()
{
    m_animation->setDuration(3000);

    m_animation->setKeyValueAt(0, QRect(50, 50, 128, 128));
    m_animation->setKeyValueAt(0.25, QRect(200, 50, 128, 128));
    m_animation->setKeyValueAt(0.5, QRect(50, 50, 128, 128));
    m_animation->setKeyValueAt(0.75, QRect(200, 50, 128, 128));
    m_animation->setKeyValueAt(1, QRect(50, 50, 128, 128));

    m_animation->start();
}

我想多次显示 startAnimation 函数中完成的动画，现在它只显示两次。我尝试使用 QSequential 但这也不起作用。我还尝试将此函数与线程连接，但是当我创建线程类的对象时，它显示未解析的符号错误。

Answer 1

您应该设置 loopCount属性(property)。

void MainWindow::startAnimation()
{
    m_animation->setLoopCount(10);
    m_animation->setDuration(3000);

    m_animation->setKeyValueAt(0, QRect(50, 50, 128, 128));
    m_animation->setKeyValueAt(0.25, QRect(200, 50, 128, 128));
    m_animation->setKeyValueAt(0.5, QRect(50, 50, 128, 128));
    m_animation->setKeyValueAt(0.75, QRect(200, 50, 128, 128));
    m_animation->setKeyValueAt(1, QRect(50, 50, 128, 128));

    m_animation->start();
}