69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
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#include "ExQFileSystemModel.h"
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#include "ui_ExQFileSystemModel.h"
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ExQFileSystemModel::ExQFileSystemModel(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::ExQFileSystemModel)
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{
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ui->setupUi(this);
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setWindowTitle(QObject::tr("文件系统模型QFileSystemModel的介绍和使用"));
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init();
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connect(ui->treeView, &QTreeView::clicked, ui->listView, &QListView::setRootIndex);
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connect(ui->treeView, &QTreeView::clicked, ui->tableView, &QTableView::setRootIndex);
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}
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ExQFileSystemModel::~ExQFileSystemModel()
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{
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delete ui;
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}
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//初始化，以及初始化状态栏
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void ExQFileSystemModel::init()
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{
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//设置数据模型，且加载到各个视图上面
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m_model = new QFileSystemModel(this);
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QString currPath = QDir::currentPath(); //获取当前路径
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m_model->setRootPath(currPath); //设置根目录
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ui->treeView->setModel(m_model); //设置数据模型
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ui->listView->setModel(m_model);
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ui->tableView->setModel(m_model);
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ui->columnView->setModel(m_model);
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//初始化状态栏
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m_labFileName = new QLabel("名称：", ui->statusBar);
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m_labFileName->setMinimumWidth(180);
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m_labFileSize = new QLabel("大小：", ui->statusBar);
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m_labFileSize->setFixedWidth(130);
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m_labFileType = new QLabel("类型：", ui->statusBar);
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m_labFileType->setFixedWidth(130);
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m_labPath = new QLabel("路径：" + currPath, ui->statusBar);
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m_chkBoxIsFile = new QCheckBox("当前为文件夹", ui->statusBar);
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m_chkBoxIsFile->setFixedWidth(130);
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//各种QLable添加到状态栏
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ui->statusBar->addWidget(m_labFileName);
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ui->statusBar->addWidget(m_labFileSize);
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ui->statusBar->addWidget(m_labFileType);
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ui->statusBar->addWidget(m_chkBoxIsFile);
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ui->statusBar->addWidget(m_labPath);
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}
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//单击treeView，会在状态栏显示当前节点的信息
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void ExQFileSystemModel::on_treeView_clicked(const QModelIndex &index)
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{
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m_chkBoxIsFile->setChecked(m_model->isDir(index)); //是否是目录
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m_labFileName->setText("名称：" + m_model->fileName(index)); //文件名称
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double size = m_model->size(index) / 1024.0;
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if (size < 1024)
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m_labFileSize->setText("类型：" + QString::number(size, 'f', 2) + "KB");
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else if (1024 <= size && size < 1024 * 1024)
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m_labFileSize->setText("类型：" + QString::number(size / 1024, 'f', 2) + "MB");
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else
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m_labFileSize->setText("类型：" + QString::number(size / (1024 * 1024), 'f', 2) + "GB");
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m_labFileType->setText(m_model->type(index));
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m_labPath->setText(m_model->filePath(index));
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}
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