QT文件切割源码（FileSplit）

#include "mainwindow.h" #include <QWidget> #include <QVBoxLayout> #include <QHBoxLayout> #include <QLabel> #include <QGridLayout> #include <QScrollArea> #include <QFileDialog> #include <QString> #include <QFont> #include <QPixmap> #include <QRegExp> #include <QValidator> #include <QIODevice> #include "filesplitutils.h" #include "filesplitconfig.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { } MainWindow::~MainWindow() { } void MainWindow::init(){ this->setWindowFlags(Qt::FramelessWindowHint); //去掉标题栏 //this->setWindowOpacity(0.8); //半透明效果 //this->setFixedSize(400,540); //设置窗口固定大小 this->setMinimumSize(CONF_WIN_WIDTH,CONF_WIN_HEIGHT); //设置窗口的最小 QWidget *centralWidget = new QWidget; QVBoxLayout *mainLayout = new QVBoxLayout; //窗口的布局是垂直排列 mainLayout->setMargin(CONF_WIN_MARGIN); //设置边距 //上部分的布局，包括图标，标题栏，最小化按钮和关闭按钮 QHBoxLayout *topLayout=new QHBoxLayout; topLayout->setSpacing(CONF_WIN_TOP_SPACING); QLabel *labelIcon = new QLabel( centralWidget); labelIcon->setFixedSize(30,30); //label_icon->setPixmap(QPixmap::fromImage(img1)); labelIcon->setPixmap(QPixmap(":/res/res/images/split_icon.png")); topLayout->addWidget(labelIcon); QLabel *label_title = new QLabel(CONF_WIN_TOP_TITLE, centralWidget); //label_title->setFont(); topLayout->addWidget(label_title); topLayout->addStretch(); QPushButton *btn_min = new QPushButton(centralWidget); btn_min->setFixedSize(40,30); btn_min->setFlat(true); btn_min->setStyleSheet("QPushButton{background-image: url(:/res/res/images/min_normal.png);}" "QPushButton:hover{background-image: url(:/res/res/images/min_on.png);}" "QPushButton:pressed{background-image: url(:/res/res/images/min_press.png);}"); topLayout->addWidget(btn_min); QPushButton *btn_close = new QPushButton( centralWidget); btn_close->setFixedSize(45,30); btn_close->setFlat(true); btn_close->setStyleSheet("QPushButton{background-image: url(:/res/res/images/close_normal.png);}" "QPushButton:hover{background-image: url(:/res/res/images/close_on.png);}" "QPushButton:pressed{background-image: url(:/res/res/images/close_press.png);}"); topLayout->addWidget(btn_close); mainLayout->addLayout(topLayout); //中间的布局，显示打开文件按钮和保存文件到对应目录一栏 QGridLayout *centerLayout=new QGridLayout; centerLayout->setMargin(CONF_DEFAULT_MARGIN); //设置边距 QLabel *label_file = new QLabel(CONF_LAB_FILE_PATH, centralWidget); centerLayout->addWidget(label_file,0,0); mFilePathEdit=new QLineEdit; centerLayout->addWidget(mFilePathEdit,0,1); QPushButton *btn_open = new QPushButton(CONF_BTN_STR_OPEN, centralWidget); centerLayout->addWidget(btn_open,0,2); QLabel *label_dir = new QLabel(CONF_LAB_DIR_PATH, centralWidget); centerLayout->addWidget(label_dir,1,0); mDirPathEdit=new QLineEdit; centerLayout->addWidget(mDirPathEdit,1,1); QPushButton *btn_scan = new QPushButton(CONF_BTN_STR_SCAN, centralWidget); centerLayout->addWidget(btn_scan,1,2); QLabel *label_size = new QLabel(CONF_LAB_SPLIT_SIZE, centralWidget); centerLayout->addWidget(label_size,2,0); mFileSizeEdit=new QLineEdit; QRegExp regx("[0-9]+$"); QValidator *validator = new QRegExpValidator(regx, mFileSizeEdit); mFileSizeEdit->setValidator(validator); centerLayout->addWidget(mFileSizeEdit,2,1); mSizeUnit = new QComboBox; mSizeUnit->addItem(QWidget::tr("byte")); mSizeUnit->addItem(QWidget::tr("KB")); mSizeUnit->addItem(QWidget::tr("MB")); mSizeUnit->addItem(QWidget::tr("GB")); mSizeUnit->setCurrentIndex(2); //默认是MB centerLayout->addWidget(mSizeUnit,2,2); mProgressBar=new QProgressBar; mProgressBar->setOrientation(Qt::Horizontal); // 水平方向 mProgressBar->setMinimum(0); mProgressBar->setMaximum(100); mProgressBar->setValue(0); // 当前进度 mProgressBar->setAlignment(Qt::AlignRight | Qt::AlignVCenter); // 对齐方式 centerLayout->addWidget(mProgressBar,3,0,1,2); mBtnStart = new QPushButton(CONF_BTN_STR_START, centralWidget); centerLayout->addWidget(mBtnStart,3,2,1,1); mainLayout->addLayout(centerLayout); QVBoxLayout *bottomLayout = new QVBoxLayout; bottomLayout->setMargin(CONF_DEFAULT_MARGIN); //设置边距 mTextEdit=new QTextEdit; mTextEdit->setFontWeight(QFont::Normal); bottomLayout->addWidget(mTextEdit); mainLayout->addLayout(bottomLayout); centralWidget->setLayout(mainLayout); setCentralWidget(centralWidget); //给按钮绑定处理函数 connect(btn_min, SIGNAL(clicked()), this, SLOT(onClickMin())); connect(btn_close, SIGNAL(clicked()), this, SLOT(onClickClose())); connect(btn_open, SIGNAL(clicked()), this, SLOT(onClickOpen())); connect(btn_scan, SIGNAL(clicked()), this, SLOT(onClickScan())); connect(mBtnStart, SIGNAL(clicked()), this, SLOT(onClickStart())); } void MainWindow::mousePressEvent(QMouseEvent* e){ // 鼠标的单击事件 if(e->button()==Qt::LeftButton){ mPressPos=e->pos(); mPressed=true; } } void MainWindow::mouseMoveEvent(QMouseEvent* e){ // 鼠标的移动事件 if(mPressed){ move(e->globalPos()-mPressPos); } } void MainWindow::mouseReleaseEvent(QMouseEvent* e){ // 鼠标的单击释放事件 mPressed=false; } void MainWindow::onClickMin(){ this->showMinimized(); } void MainWindow::onClickClose(){ this->close(); } void MainWindow::onClickOpen(){ QString filePath = QFileDialog::getOpenFileName(NULL,CONF_FILE_DIALOG_TITLE,".","*.*"); //文件选择对话框 if(!filePath.isEmpty()){ mFilePathEdit->setText(filePath); } } void MainWindow::onClickScan(){ QString dirPath = QFileDialog::getExistingDirectory(NULL,CONF_DIR_DIALOG_TITLE,"."); if(!dirPath.isEmpty()){ mDirPathEdit->setText(dirPath); } } void MainWindow::onClickStart(){ QString filePath=mFilePathEdit->text(); QString dirPath=mDirPathEdit->text(); QString fileSize=mFileSizeEdit->text(); int unitIndex=mSizeUnit->currentIndex(); if(!FileSplitUtils::islegalFilePath(filePath)){ mTextEdit->append(QWidget::tr("输入文件为空或者不存在。文件：").append(filePath)); return; } if(!FileSplitUtils::islegalDirPath(dirPath)){ mTextEdit->append(QWidget::tr("输入目录为空或者不存在。目录：").append(dirPath)); return; } qint64 splitSize=FileSplitUtils::calculateFileSize(fileSize,unitIndex); if(!FileSplitUtils::islegalSplitSize(filePath,splitSize)){ mTextEdit->append(QWidget::tr("分割的文件大小不合法，请重新输入。大小：").append(QString::number(splitSize,10))); return; } WorkerThread *workerThread = new WorkerThread(this); workerThread->setWorkerParams(filePath,dirPath,splitSize); connect(workerThread, SIGNAL(signalUpdate(int)), this, SLOT(onHandleUpdate(int))); connect(workerThread, SIGNAL(signalAppend(const QString&)), this, SLOT(onHandleAppend(const QString&))); // 线程结束后，自动销毁 connect(workerThread, SIGNAL(finished()), workerThread, SLOT(deleteLater())); workerThread->start(); } void MainWindow::onHandleUpdate(int value){ mProgressBar->setValue(value); if(value==0){ mBtnStart->setEnabled(false); //按钮无法点击 }else if(value==100){ mBtnStart->setEnabled(true); //按钮恢复可以点击 } } void MainWindow::onHandleAppend(const QString& appendText){