added saving list of downloaded files and they are displayed in red in the treeview

mainwindow.cpp

@@ -1,5 +1,6 @@
 #include "mainwindow.h"
 #include <QComboBox>
+#include <QTextBlock>
 
 using namespace std;
 
@@ -691,6 +692,8 @@ void MainWindow::on_connectButton_clicked()
 // add parent in treeview
 void MainWindow::addTreeItem(QString name, QString fileSize, QString fullsize, QString type, QString date, bool isDir=false, QTreeWidgetItem *parent=nullptr)
 {
+    QFont * font = new QFont();
+
     QTreeWidgetItem *treeItem;
     if (parent != nullptr)
     {
@@ -707,6 +710,22 @@ void MainWindow::addTreeItem(QString name, QString fileSize, QString fullsize, Q
     }else
     {
         // item is a file
+        if (QFile::exists(this->downloading.savePath + "/" + name))
+        {
+            QBrush b (Qt::red);
+            treeItem->setForeground(0, b);
+            treeItem->setFont(0, *font);
+        }else
+        {
+            this->settings.beginGroup("Downloaded/");
+            if (this->settings.contains(name))
+            {
+                QBrush b (Qt::red);
+                treeItem->setForeground(0, b);
+                treeItem->setFont(0, *font);
+            }
+            this->settings.endGroup();
+        }
         treeItem->setText(1,type);
     }
     treeItem->setText(0, name);
@@ -1017,6 +1036,10 @@ void MainWindow::downloadFinished(int exitCode, QProcess::ExitStatus exitStatus)
 
     if (retry == false)
     {
+        QString filename = ui->listDownload->item(0)->text();
+        pos = filename.contains(" => ");
+        filename.resize(pos);
+        this->settings.setValue("Downloaded/" + ui->listDownload->item(0)->text(), true);
         delete ui->listDownload->takeItem(0);
     }
     this->downloading.clear();