#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QMediaPlayer>  //播放器
#include <QVideoWidget>  //播放窗口
#include <QMediaPlaylist>//播放列表
#include <QString>
#include <QFileDialog>//文件窗口
#include <QDebug>
#include <QResizeEvent>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QListWidgetItem>
#include <QObject>
#include <QAbstractEventDispatcher>
#include "globalkeyfilter.h"
namespace Ui
{
class Widget;
}
class QMediaPlayer;
class QMediaPlaylist;
class QVideoWidget;
class Widget : public QWidget
{
    Q_OBJECT
public:
    explicit Widget(QWidget* parent = 0);
    void setget_Alltime(qint64 playtime);//獲取視頻時長并設置到標簽
    void setget_currenttime(qint64 playtime);//獲取當時播放位置并設置
    void settimeslider(qint64 playtime);//設置進度條
    void exitFullScreen();  // 退出全屏
    void togglePlayback();  // 暫停/播放
    ~Widget();
private slots:
    void on_btn_open_clicked();//打開音視頻
    void on_btn_start_clicked();//播放
    void on_voice_control_valueChanged(int value);//控制聲音
    void on_btn_fullshow_clicked();//全屏顯示
    void getduration(qint64 playtime);   //獲取時間改變信號
    void getposition(qint64 playtime);   //獲取當前播放位置
    void on_btn_ht_clicked();//上一個音視頻
    void on_btn_qj_clicked();//下一個音視頻
    void on_listWidget_doubleClicked(const QModelIndex& index);
private:
    Ui::Widget* ui;
    QStringList         m_strlist;          //文件名列表
    QMediaPlayer*       m_pMediaPlayer;     //播放器
    QVideoWidget*       m_pVideoWidget;     //播放窗口
    QMediaPlaylist*     m_MediaPlaylist;    //播放列表
    QMediaPlayer::State m_state;            //播放狀態(tài)
    int m_hour;                             //視頻總時長
    int m_munete;                           //分鐘
    int m_second;                           //秒
    bool m_sliderstate;                     //滑塊是否被選中的狀態(tài)
    int m_slider_crtval;                    //滑塊當前值
    GlobalKeyFilter* m_globalKeyFilter;     //  GlobalKeyFilter 類
};
#endif // WIDGET_H

#ifndef MYSLIDER_H
#define MYSLIDER_H
#include <QMouseEvent>
#include <QSlider>
class MySlider : public QSlider
{
    Q_OBJECT
public:
    explicit MySlider(QWidget* parent = nullptr);
protected:
    void mousePressEvent(QMouseEvent* ev);
    void mouseReleaseEvent(QMouseEvent* ev);
signals:
    void mousepress(int value);
    void mouserelease(int value);
};
#endif // MYSLIDER_H

#include "globalkeyfilter.h"
#include "widget.h"
#include <QKeyEvent>
#include <Windows.h>
GlobalKeyFilter::GlobalKeyFilter(Widget* widget) : m_widget(widget)
{
    qDebug() << "鍵盤監(jiān)聽事件啟動了" << "\n";
}
bool GlobalKeyFilter::nativeEventFilter(const QByteArray& eventType, void* message, long* result)
{
    if (eventType == "windows_generic_MSG")
    {
        MSG* msg = static_cast<MSG*>(message);
        if (msg->message == WM_KEYDOWN)
        {
            int key = msg->wParam;
            // 處理 ESC 鍵
            if (key == VK_ESCAPE)
            {
                if (m_widget)
                {
                    m_widget->exitFullScreen();
                }
            }
            // 處理空格鍵
            if (key == VK_SPACE)
            {
                m_widget->togglePlayback();
            }
        }
    }
    // 返回 false 以便繼續(xù)傳遞事件
    return false;
}