zoom into center of visible area

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 4044387..1deb762 100644 (file)
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -32,7 +32,6 @@
 #endif
 
 
-
 MainWindow::MainWindow(QString url, int quality):
        QMainWindow(0),
        vnc_view(0),
@@ -355,6 +354,18 @@ void MainWindow::showInputPanel()
 
 void MainWindow::setZoomLevel(int level)
 {
-       if(vnc_view)
-               vnc_view->setZoomLevel(level);
+       if(!vnc_view)
+               return;
+       
+       int old_width = vnc_view->width();
+       QPoint center = vnc_view->visibleRegion().boundingRect().center();
+
+       vnc_view->setZoomLevel(level);
+
+       int new_width = vnc_view->width();
+       center = center * (double(new_width)/old_width);
+
+       //scroll to center
+       scroll_area->ensureVisible(center.x(), center.y(),
+               scroll_area->width()/2, scroll_area->height()/2);
 }