https://github.com/StephaneCouturier/Katalog/issues/556

src/filesview.cpp

@@ -147,7 +147,11 @@ bool FilesView::lessThan(const QModelIndex &left, const QModelIndex &right) cons
         QString leftString = leftData.toString();
         QString rightString = rightData.toString();
 
-        return QString::compare(leftString, rightString, Qt::CaseInsensitive) < 0;
+        if (caseSensitive) {
+            return leftString < rightString;
+        } else {
+            return QString::compare(leftString, rightString, Qt::CaseInsensitive) < 0;
+        }
     }
 
     return QSortFilterProxyModel::lessThan(left, right);

src/filesview.h

@@ -39,6 +39,7 @@ class FilesView  : public QSortFilterProxyModel
 
 public:
     FilesView(QObject *parent = nullptr);
+    bool caseSensitive = false;
 
 protected:
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;

src/mainwindow.h

@@ -123,6 +123,9 @@ class MainWindow : public QMainWindow
         // void checkDatabaseContent(const QString &connectionName);
         // void copyDataFromGlobalToSearchConnection(const QString &connectionName);
 
+        //Settings
+        bool fileSortCaseSensitive;
+
     private:
         //Global
             //Application version
@@ -396,6 +399,7 @@ class MainWindow : public QMainWindow
             void on_Settings_checkBox_BiggerIconSize_stateChanged(int arg1);
             void on_Settings_checkBox_LoadLastCatalog_stateChanged(int arg1);
             void on_Settings_pushButton_OpenSettingsFile_clicked();
+            void on_Settings_checkBox_SettingsFileCaseSensitiveSort_stateChanged();
 
             void on_Settings_pushButton_Documentation_clicked();
             void on_Settings_pushButton_ReleaseNotes_clicked();

src/mainwindow_setup.cpp

@@ -434,6 +434,9 @@
             optionDisplayFolders          = settings.value("Explore/DisplayFolders").toBool();
             optionDisplaySubFolders       = settings.value("Explore/DisplaySubFolders").toBool();
 
+            //Restore other settings
+            fileSortCaseSensitive       = settings.value("Settings/FileCaseSensitiveSort").toBool();
+            ui->Settings_checkBox_SettingsFileCaseSensitiveSort->setChecked(fileSortCaseSensitive);
 
             //Restore DEV Settings
             if(developmentMode==true){

src/mainwindow_tab_explore.cpp

@@ -630,6 +630,7 @@
         loadCatalogQueryModel->setQuery(std::move(loadCatalogQuery));
 
         FilesView *proxyModel2 = new FilesView(this);
+        proxyModel2->caseSensitive = fileSortCaseSensitive;
         proxyModel2->setSourceModel(loadCatalogQueryModel);
 
         proxyModel2->setHeaderData(0, Qt::Horizontal, tr("Name"));

src/mainwindow_tab_search.cpp

@@ -794,6 +794,7 @@
                     QSqlQueryModel *loadCatalogQueryModel = new QSqlQueryModel;
                     // Prepare model to display
                     FilesView *fileViewModel = new FilesView(this);
+                    fileViewModel->caseSensitive = fileSortCaseSensitive;
 
                     //Populate model with folders only if this option is selected
                     if ( newSearch->searchOnFolderCriteria==true and ui->Search_checkBox_ShowFolders->isChecked()==true )

src/mainwindow_tab_settings.cpp

@@ -428,6 +428,13 @@
         settings.setValue("Settings/CheckVersion", ui->Settings_checkBox_CheckVersion->isChecked());
     }
     //----------------------------------------------------------------------
+    void MainWindow::on_Settings_checkBox_SettingsFileCaseSensitiveSort_stateChanged()
+    {
+        QSettings settings(collection->settingsFilePath, QSettings:: IniFormat);
+        settings.setValue("Settings/FileCaseSensitiveSort", ui->Settings_checkBox_SettingsFileCaseSensitiveSort->isChecked());
+        fileSortCaseSensitive = ui->Settings_checkBox_SettingsFileCaseSensitiveSort->isChecked();
+    }
+    //----------------------------------------------------------------------
 
 //SETTINGS / data methods --------------------------------------------------
     void MainWindow::loadCollection()

src/searchprocess.cpp

@@ -657,6 +657,7 @@ void SearchProcess::processSearchResults()
             mainWindow->newSearch->fileCatalogs <<"";
 
         // Populate model with data
+        fileViewModel->caseSensitive = mainWindow->fileSortCaseSensitive;
         fileViewModel->setSourceModel(mainWindow->newSearch);
         fileViewModel->setHeaderData(0, Qt::Horizontal, QCoreApplication::translate("MainWindow", "Name"));
         fileViewModel->setHeaderData(1, Qt::Horizontal, QCoreApplication::translate("MainWindow", "Size"));