Qt中QAbstractButton::setAutoRepeat设置按住按钮自动重复

#include <QApplication>
#include <QPushButton>
#include <QDebug>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    
    QPushButton button("按住我自动重复");
    button.setAutoRepeat(true); // 启用自动重复
    button.setAutoRepeatDelay(500); // 首次重复前的延迟(毫秒)
    button.setAutoRepeatInterval(100); // 重复间隔(毫秒)
    
    QObject::connect(&button, &QPushButton::clicked, []() {
        qDebug() << "按钮被点击 at" << QTime::currentTime().toString("hh:mm:ss.zzz");
    });
    
    button.show();
    return app.exec();
}

// 启用/禁用自动重复
void setAutoRepeat(bool enable);

// 设置首次重复前的延迟（默认300ms）
void setAutoRepeatDelay(int delay);

// 设置重复间隔（默认100ms）
void setAutoRepeatInterval(int interval);

// 获取当前设置
bool autoRepeat() const;
int autoRepeatDelay() const;
int autoRepeatInterval() const;

class CounterWidget : public QWidget
{
    Q_OBJECT
private:
    QPushButton *incButton;
    QPushButton *decButton;
    QLabel *countLabel;
    int count = 0;

public:
    CounterWidget(QWidget *parent = nullptr) : QWidget(parent)
    {
        QVBoxLayout *layout = new QVBoxLayout(this);
        
        countLabel = new QLabel("0", this);
        countLabel->setAlignment(Qt::AlignCenter);
        countLabel->setStyleSheet("font-size: 24px;");
        
        incButton = new QPushButton("+", this);
        decButton = new QPushButton("-", this);
        
        // 设置自动重复
        setupAutoRepeat(incButton);
        setupAutoRepeat(decButton);
        
        layout->addWidget(countLabel);
        layout->addWidget(incButton);
        layout->addWidget(decButton);
        
        connect(incButton, &QPushButton::clicked, this, &CounterWidget::increment);
        connect(decButton, &QPushButton::clicked, this, &CounterWidget::decrement);
    }

private:
    void setupAutoRepeat(QPushButton *button)
    {
        button->setAutoRepeat(true);
        button->setAutoRepeatDelay(400); // 按住400ms后开始重复
        button->setAutoRepeatInterval(50); // 每50ms重复一次
    }
    
private slots:
    void increment()
    {
        count++;
        countLabel->setText(QString::number(count));
        qDebug() << "增加至:" << count;
    }
    
    void decrement()
    {
        count--;
        countLabel->setText(QString::number(count));
        qDebug() << "减少至:" << count;
    }
};

class VolumeControl : public QWidget
{
    Q_OBJECT
public:
    VolumeControl(QWidget *parent = nullptr)
    {
        QHBoxLayout *layout = new QHBoxLayout(this);
        
        QPushButton *volDown = new QPushButton("🔉", this);
        QPushButton *volUp = new QPushButton("🔊", this);
        
        // 音量减小按钮：延迟稍长，间隔稍慢
        volDown->setAutoRepeat(true);
        volDown->setAutoRepeatDelay(500);
        volDown->setAutoRepeatInterval(150);
        
        // 音量增大按钮：同样的设置
        volUp->setAutoRepeat(true);
        volUp->setAutoRepeatDelay(500);
        volUp->setAutoRepeatInterval(150);
        
        layout->addWidget(volDown);
        layout->addWidget(volUp);
        
        connect(volDown, &QPushButton::clicked, this, &VolumeControl::decreaseVolume);
        connect(volUp, &QPushButton::clicked, this, &VolumeControl::increaseVolume);
    }

private slots:
    void decreaseVolume() {
        // 减小音量逻辑
        qDebug() << "音量减小";
    }
    
    void increaseVolume() {
        // 增大音量逻辑
        qDebug() << "音量增大";
    }
};

class GameController : public QWidget
{
    Q_OBJECT
public:
    GameController(QWidget *parent = nullptr)
    {
        // 方向控制按钮
        QPushButton *leftBtn = new QPushButton("←", this);
        QPushButton *rightBtn = new QPushButton("→", this);
        
        // 快速响应：短延迟，快间隔
        leftBtn->setAutoRepeat(true);
        leftBtn->setAutoRepeatDelay(200);
        leftBtn->setAutoRepeatInterval(30);
        
        rightBtn->setAutoRepeat(true);
        rightBtn->setAutoRepeatDelay(200);
        rightBtn->setAutoRepeatInterval(30);
        
        connect(leftBtn, &QPushButton::pressed, []() {
            qDebug() << "向左移动开始";
        });
        connect(leftBtn, &QPushButton::released, []() {
            qDebug() << "向左移动结束";
        });
        connect(leftBtn, &QPushButton::clicked, []() {
            qDebug() << "向左移动一步";
        });
        
        connect(rightBtn, &QPushButton::clicked, []() {
            qDebug() << "向右移动一步";
        });
    }
};

// 可以同时监听多个信号
connect(button, &QPushButton::pressed, []() {
    qDebug() << "按钮按下";
});

connect(button, &QPushButton::released, []() {
    qDebug() << "按钮释放";
});

connect(button, &QPushButton::clicked, []() {
    qDebug() << "按钮点击(自动重复时多次触发)";
});