qt自定义文件选择器

头文件

#ifndef FILE_INTERFACE_H
#define FILE_INTERFACE_H

#include <QWidget>
#include <QFileDialog>
#include <QMouseEvent>
#include <QProcess>
#include <QDebug>
#include <QListView>
#include <QTreeView>



namespace Ui {
class FileInterface;
}

class FileInterface : public QWidget
{
    Q_OBJECT
public:
    enum Mode
    {
        File = 0,
        Type1,
        Type1,
        Type1,
        Type1
        Type1,
        Type1,
        Type1,
        Type1
    };

public:
    explicit FileInterface(QWidget *parent = nullptr);
    ~FileInterface();
    void setMode(Mode mode);
    void onlyshow(QPoint point);


protected:
    void mouseMoveEvent(QMouseEvent *e) override;
    void mousePressEvent(QMouseEvent *e) override;
    void mouseReleaseEvent(QMouseEvent *e) override;
    bool eventFilter(QObject *obj, QEvent *e) override;

private:
    void setFile();


signals:
    void ok_select(const QStringList &files);

public:


private:
    Ui::FileInterface *ui;
    QFileDialog *file_dialog;
    QPoint press_point;//鼠标按下去的点
    bool is_move;
    QString userPath;
    QString user;
    FileInterface::Mode mode;
};

#endif // FILE_INTERFACE_H

cpp文件
 

#include "file_interface.h"
#include "ui_file_interface.h"

FileInterface::FileInterface(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::FileInterface)
{
    ui->setupUi(this);
    this->setAttribute(Qt::WA_DeleteOnClose);
    this->setWindowModality(Qt::ApplicationModal);
    this-&g