OBS主界面布局

centralwidget
    QFrame *contextContainer
        QFrame *contextSubContainer
            QLabel *contextSourceIcon
            QLabel *contextSourceIconSpacer
            QLabel *contextSourceLabel
            QFrame *line
            QFrame *line_3
            QPushButton *sourceFiltersButton
            QPushButton *sourceInteractButton
            QPushButton *sourceInteractButton        
        QFrame *emptySpace;最右边用于显示MP4文件名等
    QHBoxLayout horizontalLayout_2  水平布局
        QHBoxLayout previewLayout   水平布局
            QFrame *previewDisabledWidget;
                QHBoxLayout *horizontalLayout 水平布局
                    QPushButton *enablePreviewButton
                    QSpacerItem *horizontalSpacer_2
                    QSpacerItem *horizontalSpacer_3
                QLabel *label;
                QSpacerItem *verticalSpacer_2
                QSpacerItem *verticalSpacer_3
            QVBoxLayout *previewTextLayout
                OBSBasicPreview *preview