Try to keep cursor and scroll in place on refresh

When the file is saving, the cursor position was resetting to the top and you should keep
scrolling by hand every time you save the file.

This patch saves the scroll and cursor position and set it again after the file is refreshed so
we can continue edition from where we were.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/mainwin.cc b/src/mainwin.cc
index 5b986b1..8c21b20 100644
--- a/src/mainwin.cc
+++ b/src/mainwin.cc
@@ -75,6 +75,7 @@
 #include <QSettings>
 #include <QProgressDialog>
 #include <QMutexLocker>
+#include <QScrollBar>
 
 #include <fstream>
 
@@ -605,7 +606,15 @@ void MainWindow::refreshDocument()
 			reader.setCodec("UTF-8");
 			QString text = reader.readAll();
 			PRINTB("Loaded design '%s'.", this->fileName.toLocal8Bit().constData());
+			int y = editor->verticalScrollBar()->sliderPosition();
+			// Save current cursor position
+			QTextCursor cursor = editor->textCursor();
+			int n = cursor.position();
 			editor->setPlainText(text);
+			// Restore cursor position
+			cursor.setPosition(n);
+			editor->setTextCursor(cursor);
+			editor->verticalScrollBar()->setSliderPosition(y);
 		}
 	}
 	setCurrentOutput();