qt 鼠标 键盘 录制 及 回放 代码

以下是一个简单的 Qt 鼠标键盘录制及回放的示例代码：

#include <QApplication>
#include <QWidget>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QTimer>
#include <QFile>
#include <QDataStream>

class Recorder : public QObject
{
    Q_OBJECT

public:
    Recorder(QObject *parent = nullptr)
        : QObject(parent)
    {
        connect(qApp, &QApplication::aboutToQuit, this, &Recorder::stopRecording);
    }

public slots:
    void startRecording(QString filename)
    {
        if (m_file.isOpen())
        {
            return;
        }

        m_file.setFileName(filename);
        if (!m_file.open(QIODevice::WriteOnly))
        {
            return;
        }

        m_dataStream.setDevice(&m_file);
        m_dataStream.setVersion(QDataStream::Qt_5_15);

        m_recording = true;
        m_startTime = QDateTime::currentDateTime();

        connect(qApp, &QApplication::focusChanged, this, &Recorder::onFocusChanged);
        connect(qApp, &QApplication::applicationStateChanged, this, &Recorder::onApplicationStateChanged);
        connect(qApp, &QApplication::aboutToQuit, this, &Recorder::stopRecording);

        m_timer.start(20, this);
    }

    void stopRecording()
    {
        if (!m_recording)
        {
            return;
        }

        m_recording = false;

        m_timer.stop();

        disconnect(qApp, &QApplication::focusChanged, this, &Recorder::onFocusChanged);
        disconnect(qApp, &QApplication::applicationStateChanged, this, &Recorder::onApplicationStateChanged);
        disconnect(qApp, &QApplication::aboutToQuit, this, &Recorder::stopRecording);

        m_file.close();
    }

    void onMouseEvent(QMouseEvent *event)
    {
        if (m_recording)
        {
            m_dataStream << qint64(QDateTime::currentDateTime().msecsTo(m_startTime));
            m_dataStream << qint32(QEvent::MouseButtonPress + event->button());
            m_dataStream << event->pos();
        }
    }

    void onKeyEvent(QKeyEvent *event)
    {
        if (m_recording)
        {
            m_dataStream << qint64(QDateTime::currentDateTime().msecsTo(m_startTime));
            m_dataStream << qint32(QEvent::KeyPress + event->key());
            m_dataStream << qint32(event->modifiers());
        }
    }

private slots:
    void onTimeout()
    {
        if (qApp->applicationState() == Qt::ApplicationActive)
        {
            QPoint pos = QCursor::pos();
            m_dataStream << qint64(QDateTime::currentDateTime().msecsTo(m_startTime));
            m_dataStream << qint32(QEvent::MouseMove);
            m_dataStream << pos;
        }
    }

    void onFocusChanged(QWidget *oldWidget, QWidget *newWidget)
    {
        if (m_recording)
        {
            m_dataStream << qint64(QDateTime::currentDateTime().msecsTo(m_startTime));
            m_dataStream << qint32(QEvent::FocusOut);
            m_dataStream << oldWidget;
            m_dataStream << qint32(QEvent::FocusIn);
            m_dataStream << newWidget;
        }
    }

    void onApplicationStateChanged(Qt::ApplicationState state)
    {
        if (m_recording)
        {
            m_dataStream << qint64(QDateTime::currentDateTime().msecsTo(m_startTime));
            m_dataStream << qint32(QEvent::ApplicationActivate + state);
        }
    }

private:
    QFile m_file;
    QDataStream m_dataStream;
    bool m_recording = false;
    QDateTime m_startTime;
    QTimer m_timer;

};

class Player : public QObject
{
    Q_OBJECT

public:
    Player(QObject *parent = nullptr)
        : QObject(parent)
    {
    }

public slots:
    void play(QString filename)
    {
        if (m_file.isOpen())
        {
            return;
        }

        m_file.setFileName(filename);
        if (!m_file.open(QIODevice::ReadOnly))
        {
            return;
        }

        m_dataStream.setDevice(&m_file);
        m_dataStream.setVersion(QDataStream::Qt_5_15);

        qint64 startTime = QDateTime::currentDateTime().toMSecsSinceEpoch();

        while (!m_dataStream.atEnd())
        {
            qint64 timestamp;
            m_dataStream >> timestamp;

            qint32 eventType;
            m_dataStream >> eventType;

            switch (eventType)
            {
            case QEvent::MouseMove:
            {
                QPoint pos;
                m_dataStream >> pos;
                int delay = timestamp - startTime;
                QTimer::singleShot(delay, this, [pos]() {
                    QCursor::setPos(pos);
                });
                break;
            }
            case QEvent::MouseButtonPress:
            case QEvent::MouseButtonRelease:
            {
                int button = eventType - QEvent::MouseButtonPress;
                QPoint pos;
                m_dataStream >> pos;
                int delay = timestamp - startTime;
                QTimer::singleShot(delay, this, [button, pos]() {
                    QMouseEvent event(QEvent::MouseButtonPress + button, pos, Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
                    qApp->sendEvent(qApp->focusWidget(), &event);
                });
                break;
            }
            case QEvent::KeyPress:
            case QEvent::KeyRelease:
            {
                int key = eventType - QEvent::KeyPress;
                int modifiers;
                m_dataStream >> modifiers;
                int delay = timestamp - startTime;
                QTimer::singleShot(delay, this, [key, modifiers]() {
                    QKeyEvent event(key == 0 ? QEvent::KeyPress : QEvent::KeyRelease, key, Qt::NoModifier, QString(), false, modifiers);
                    qApp->sendEvent(qApp->focusWidget(), &event);
                });
                break;
            }
            case QEvent::FocusOut:
            case QEvent::FocusIn:
            {
                QWidget *oldWidget, *newWidget;
                m_dataStream >> oldWidget >> newWidget;
                int delay = timestamp - startTime;
                QTimer::singleShot(delay, this, [oldWidget, newWidget]() {
                    qApp->setActiveWindow(newWidget->window());
                    qApp->setActiveWindow(newWidget);
                    qApp->setActiveWindow(newWidget->window());
                    newWidget->setFocus(Qt::OtherFocusReason);
                });
                break;
            }
            case QEvent::ApplicationActivate:
            case QEvent::ApplicationDeactivate:
            case QEvent::ApplicationStateChange:
            {
                int state = eventType - QEvent::ApplicationActivate;
                int delay = timestamp - startTime;
                QTimer::singleShot(delay, this, [state]() {
                    qApp->setApplicationState(Qt::ApplicationState(state));
                });
                break;
            }
            default:
                break;
            }

            startTime = timestamp;
        }

        m_file.close();
    }

private:
    QFile m_file;
    QDataStream m_dataStream;

};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QWidget w;
    w.show();

    Recorder recorder;
    Player player;

    QTimer::singleShot(1000, [&]() {
        recorder.startRecording("record.dat");
    });

    QTimer::singleShot(5000, [&]() {
        player.play("record.dat");
    });

    return a.exec();
}

#include "main.moc"

这个示例代码使用了两个类 `Recorder` 和 `Player` 实现了录制和回放功能。`Recorder` 类用于录制鼠标和键盘事件，`Player` 类用于回放录制的事件。在 `main` 函数中，我们创建了一个 `Recorder` 和一个 `Player` 对象，并分别在程序启动后 1 秒和 5 秒后开始录制和回放。录制的数据保存在 `record.dat` 文件中，回放时从该文件中读取数据。

在 `Recorder` 类中，我们使用 `QDataStream` 将鼠标和键盘事件的时间戳、事件类型和事件数据写入到文件中。在鼠标或键盘事件发生时，我们会记录下事件的时间戳、事件类型和事件数据，然后写入到文件中。在 `stopRecording` 函数中，我们停止录制，并断开与 `QApplication` 的信号连接。

在 `Player` 类中，我们使用 `QDataStream` 从文件中读取鼠标和键盘事件的时间戳、事件类型和事件数据，并使用 `QTimer::singleShot` 来模拟鼠标和键盘事件的发生。在鼠标或键盘事件发生时，我们会计算出事件与上一个事件的时间差，然后使用 `QTimer::singleShot` 在相应的时间后模拟事件的发生。在 `play` 函数中，我们通过循环读取文件中的所有事件，并在每个事件发生的时间点模拟事件的发生。

注意：这个示例代码只是一个简单的实现，没有考虑到很多复杂的情况，例如多线程、多窗口、控件状态等。在实际应用中，需要根据具体情况进行修改和完善。