更新加载进度条功能

mainwindow.cpp

@@ -19,7 +19,7 @@ MainWindow::MainWindow(QWidget *parent)
 {
     ui->setupUi(this);
 
-    setAcceptDrops(true); // 允许窗口接受拖放事件
+    setAcceptDrops(true);
 
     connect(ui->actionOpen, &QAction::triggered, this, &MainWindow::onOpenButtonClicked);
     connect(ui->actionSave, &QAction::triggered, this, &MainWindow::onSaveButtonClicked);
@@ -33,14 +33,11 @@ MainWindow::MainWindow(QWidget *parent)
     ui->actionOpen->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_N));
     ui->actionSave->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
 
-    // 添加 "Convert" 菜单
     QMenu* convertMenu = menuBar()->addMenu(tr("转换(&C)"));
 
-    // 添加 "Text to SQLite" 子菜单项，并关联槽函数
     QAction* textToSqliteAction = convertMenu->addAction(tr("txt 转 SQLite"));
     connect(textToSqliteAction, &QAction::triggered, this, &MainWindow::convertTextToSqlite);
 
-    // 添加 "SQLite to Text" 子菜单项，并关联槽函数
     QAction* sqliteToTextAction = convertMenu->addAction(tr("SQLite 转 txt"));
     connect(sqliteToTextAction, &QAction::triggered, this, &MainWindow::convertSqliteToText);
 
@@ -49,11 +46,23 @@ MainWindow::MainWindow(QWidget *parent)
     sqliteToTextAction->setIcon(convertIcon);
 }
 
+
 MainWindow::~MainWindow()
 {
     delete ui;
 }
 
+void MainWindow::showProgressDialog(const QString& labelText, int minimum, int maximum)
+{
+    progressDialog = new QProgressDialog(labelText, "Cancel", minimum, maximum, this);
+    progressDialog->setWindowModality(Qt::WindowModal);
+    progressDialog->setAutoClose(false);
+    progressDialog->setAutoReset(false);
+    progressDialog->setValue(minimum);
+    progressDialog->show();
+}
+
+
 void MainWindow::loadTextFile(const QString& fileName)
 {
     QFile file(fileName);
@@ -87,13 +96,7 @@ void MainWindow::loadTextFile(const QString& fileName)
 
     file.close();
 
-    progressDialog = new QProgressDialog("Loading...", "Cancel", 0, 0, this);
-    progressDialog->setWindowModality(Qt::WindowModal);
-    progressDialog->setAutoClose(false);
-    progressDialog->setAutoReset(false);
-    progressDialog->setRange(0, tableRow);
-    progressDialog->setValue(0);
-    progressDialog->show();
+    showProgressDialog("Converting...", 0, tableRow);
 
     // 将数据显示在表格中
         QTableWidget* tableWidget = ui->tableWidget;
@@ -121,14 +124,13 @@ void MainWindow::loadTextFile(const QString& fileName)
             tableWidget->setItem(i, j, item);
         }
         progressDialog->setValue(i);
-        QApplication::processEvents(); // 处理界面事件，使进度条能够更新
+        QApplication::processEvents();
         if (progressDialog->wasCanceled())
         {
             tableWidget->clear();
             break;
         }
     }
-    progressDialog->setValue(tableRow);
     progressDialog->hide();
     tableWidget->blockSignals(false); // 恢复信号发射
 }
@@ -255,7 +257,6 @@ void MainWindow::convertTextToSqlite()
         columnNames = processedLine.split('\t', Qt::SkipEmptyParts);
     }
 
-    //QTextStream textStream2(&textFile);
     QList<QStringList> data;
     textStream.seek(0);
     // 读取数据行
@@ -275,6 +276,8 @@ void MainWindow::convertTextToSqlite()
 
     textFile.close();
 
+    showProgressDialog("Converting...", 0, data.size());
+
     // 打开SQLite数据库
     QSqlDatabase database = QSqlDatabase::addDatabase("QSQLITE");
     database.setDatabaseName(sqliteFilePath);
@@ -311,6 +314,7 @@ void MainWindow::convertTextToSqlite()
     insertQuery.chop(2); // 移除最后的逗号和空格
     insertQuery += ");";
 
+    int progress = 0;
     for (const QStringList& row : data)
     {
         if (row.size() != columnNames.size())
@@ -332,8 +336,17 @@ void MainWindow::convertTextToSqlite()
             database.close();
             return;
         }
+
+        ++progress;
+        progressDialog->setValue(progress);
+        QApplication::processEvents();
+        if (progressDialog->wasCanceled())
+        {
+            break;
+        }
     }
 
+    progressDialog->hide();
     database.commit();
     database.close();
 
@@ -389,6 +402,8 @@ void MainWindow::convertSqliteToText()
         return;
     }
 
+    showProgressDialog("Converting...", 0, query.size());
+
     // Open the text file to write data
     QFile textFile(textFilePath);
     if (!textFile.open(QIODevice::WriteOnly))
@@ -408,6 +423,7 @@ void MainWindow::convertSqliteToText()
     textStream.setCodec("UTF-16LE");
 
     // Write the data to the text file
+    int progress = 0;
     while (query.next())
     {
         QSqlRecord record = query.record();
@@ -419,10 +435,20 @@ void MainWindow::convertSqliteToText()
                 textStream << "\t";
         }
         textStream << "\r\n";
+
+        ++progress;
+        progressDialog->setValue(progress);
+        QApplication::processEvents();
+        if (progressDialog->wasCanceled())
+        {
+            break;
+        }
     }
 
+    progressDialog->hide();
     textFile.close();
     database.close();
 
     QMessageBox::information(this, tr("Conversion Complete"), tr("SQLite to Text conversion completed successfully."));
 }
+

mainwindow.h

@@ -1,9 +1,8 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
-#include "qprogressdialog.h"
-#include <QThread>
 #include <QMainWindow>
+#include <QProgressDialog>
 #include <QTableWidget>
 #include <QDragEnterEvent>
 #include <QMimeData>
@@ -25,6 +24,7 @@ public:
     void dropEvent(QDropEvent *event);
     void convertTextToSqlite();
     void convertSqliteToText();
+    void showProgressDialog(const QString& labelText, int minimum, int maximum);
 
 private slots:
     void onOpenButtonClicked();
@@ -32,8 +32,7 @@ private slots:
 
 private:
     Ui::MainWindow *ui;
-    QProgressDialog* progressDialog; // 添加进度对话框指针
-    QMenu* menuFile;
-    QAction* actionFile;
+    QProgressDialog* progressDialog;
 };
+
 #endif // MAINWINDOW_H