1 files changed, 5 insertions, 2 deletions
diff --git a/window.h b/window.h
index 4d99224..01c377d 100644
--- a/window.h
+++ b/window.h
@@ -5,7 +5,10 @@
 
 
 GtkWidget* createMainWindow();
-void zoomIn();
-void zoomOut();
+
+void zoomIn(double factor, double x, double y);
+void zoomOut(double factor, double x, double y);
+void zoomInCentered(double factor);
+void zoomOutCentered(double factor);
 
 #endif /*WINDOW_H_*/