Qt中信号发送角度优化操作体验

Posted 2022-01-30 也无风雨、也无晴。

思路

• 通过定时器来控制，调整信号发送频率。

代码

constexpr int THROTTLE_TIME = 200; // milliseconds
    auto now = QDateTime::currentMSecsSinceEpoch();
    if (!m_timer) 
        m_timer = new QTimer(this);
        connect(m_timer, &QTimer::timeout, [=]() 
            sgnMove(this, m_pLastMove);
            m_lastEventTime = 0;
            m_timer->stop();
        );
    
    if (now - m_lastEventTime >= THROTTLE_TIME) 
        sgnMove(this, m_pLastMove);
        m_lastEventTime = now;
        m_timer->stop();
     else 
        m_timer->stop();
        m_timer->start(THROTTLE_TIME);