QT 获取本地存储空间大小、U 盘、SD 卡 - 进度条显示已用容量

本文链接：https://blog.youkuaiyun.com/LearnLHC/article/details/108845968

一、附上效果图

二、代码展示

#ifndef DEVICESIZETABLE_H
#define DEVICESIZETABLE_H

/**
 * 本地存储空间大小控件
 * 1:可自动加载本地存储设备的总容量/已用容量
 * 2:进度条显示已用容量
 * 3:支持所有操作系统
 * 4:增加U盘或者SD卡到达信号
 */

#include <QTableWidget>

class QProcess;

#ifdef quc
#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
#include <QtDesigner/QDesignerExportWidget>
#else
#include <QtUiPlugin/QDesignerExportWidget>
#endif

class QDESIGNER_WIDGET_EXPORT DeviceSizeTable : public QTableWidget
#else
class DeviceSizeTable : public QTableWidget
#endif

{
    Q_OBJECT
    Q_PROPERTY(QColor bgColor READ getBgColor WRITE setBgColor)
    Q_PROPERTY(QColor chunkColor1 READ getChunkColor1 WRITE setChunkColor1)
    Q_PROPERTY(QColor chunkColor2 READ getChunkColor2 WRITE setChunkColor2)
    Q_PROPERTY(QColor chunkColor3 READ getChunkColor3 WRITE setChunkColor3)
    Q_PROPERTY(QColor textColor1 READ getTextColor1 WRITE setTextColor1)
    Q_PROPERTY(QColor textColor2 READ getTextColor2 WRITE setTextColor2)
    Q_PROPERTY(QColor textColor3 READ getTextColor3 WRITE setTextColor3)

public:
    explicit DeviceSizeTable(QWidget *parent = 0);

private:
    QProcess *process;          //执行命令进程

    QColor bgColor;             //背景颜色
    QColor chunkColor1;         //进度颜色1
    QColor chunkColor2;         //进度颜色2
    QColor chunkColor3;         //进度颜色3
    QColor textColor1;          //文字颜色1
    QColor textColor2;          //文字颜色2
    QColor textColor3;          //文字颜色3

private slots:
    void readData();
    void checkSize(const QString &result, const QString &name);
    void insertSize(const QString &name, const QString &use, const QString &free, const QString &all, int percent);

public:
    QColor getBgColor()         const;
    QColor getChunkColor1()     const;
    QColor getChunkColor2()     const;
    QColor getChunkColor3()     const;
    QColor getTextColor1()      const;
    QColor getTextColor2()      const;
    QColor getTextColor3()      const;

    QSize sizeHint()            const;
    QSize minimumSizeHint()     const;

public Q_SLOTS:
    //载入容量
    void load();