Improve FileCopier

This endeavor started out quite innocently: fix the connect syntax in
ProgressDialog, but it quickly became much more. Vom Höxchen aufs
Stöxchen :)

First I thought it would be nice to add a total count to the
ProgressDialog. Then I realized that I had QElapsedTimer::restart()
totally wrong. It returns the ms *since the last restart*! It doesn't
reset to zero, so fix that.

While testing that I noticed that the download speed was quite below
average, so change the buffer size and only check if we were cancelled
when the timer elapsed. But that wasn't it. Eventually I dug into my
firewall rules and routings to get it right.

1 files changed, 6 insertions, 5 deletions

diff --git a/filewidget.cpp b/filewidget.cpp
index ab4f240..f1d8873 100644
--- a/filewidget.cpp
+++ b/filewidget.cpp
@@ -704,11 +704,12 @@ void FileWidget::setCopyProgress(qint64 bytes){
     mCopyProgress->setValue(val);
 }
 
-void FileWidget::setCopySummary(qint64 bytes, qint64 elapsed){
-    QHash<QString,QString> jobs = mFileCopier->jobs();
-    float rate = bytes / (elapsed / 1000) / 1024 / 1024.0;
-    QString sum = QString("%1 file(s), @ %2 MB/s").arg(QString::number(jobs.count() + 1)).arg(QString::number(rate, 'f', 2));
-    mCopyProgress->setSummary(sum);
+void FileWidget::setCopySummary(qint64 bytes, qint64 elapsed, int total, int copying){
+    if(elapsed != 0){
+        float rate = bytes * 8 / (elapsed / 1000.0) / 1024 / 1024.0;
+        QString sum = QString("%1/%2 file(s), @ %3 MB/s").arg(QString::number(copying+1)).arg(QString::number(total)).arg(QString::number(rate, 'f', 2));
+        mCopyProgress->setSummary(sum);
+    }
 }
 
 void FileWidget::copyFiles(QString destDir){