take scrollbar width into consideration when zooming

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 77be3b4..e0b4866 100644 (file)
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -378,7 +378,8 @@ void MainWindow::setZoomLevel(int level)
        if(new_width != old_width) {
                center = center * (double(new_width)/old_width);
                scroll_area->ensureVisible(center.x(), center.y(),
-                       scroll_area->width()/2, scroll_area->height()/2);
+                       vnc_view->visibleRegion().boundingRect().width()/2,
+                       vnc_view->visibleRegion().boundingRect().height()/2);
                vnc_view->update();
        }
 }