[client] center GUIs in the primary display only

this fixes the GUIs beeing split over 2 monitors in a dual-head setup

1 files changed, 13 insertions, 6 deletions

diff --git a/dozentenmodul/src/main/java/util/GuiOrganizer.java b/dozentenmodul/src/main/java/util/GuiOrganizer.java
index 5d6b2de8..edc16cef 100644
--- a/dozentenmodul/src/main/java/util/GuiOrganizer.java
+++ b/dozentenmodul/src/main/java/util/GuiOrganizer.java
@@ -1,19 +1,26 @@
 package util;
 
-import java.awt.Dimension;
-import java.awt.Toolkit;
 import java.awt.Window;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Display;
 
 public abstract class GuiOrganizer {
 
 	/* receive GUI, set it to center of the screen */
 	public static void centerGUI(Window gui) {
-		Dimension dm = Toolkit.getDefaultToolkit().getScreenSize();
-		double width = dm.getWidth();
-		double height = dm.getHeight();
+		
+		Display display = new Display();
+		
+		// detect bounds of primary display.
+		Rectangle rect = display.getPrimaryMonitor().getBounds();
+		
+		// without this, we get an expection, not sure what this does though :)
+		display.dispose();
+
+		double width = rect.width;
+		double height = rect.height;
 		double xPosition = (width / 2 - gui.getWidth() / 2);
 		double yPosition = (height / 2 - gui.getHeight() / 2);
 		gui.setLocation((int) xPosition, (int) yPosition);
 	}
-
 }