Allow zooming in/out with numpad +/-

plugins/org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/editor/StatechartDiagramEditor.java

@@ -10,6 +10,8 @@
  */
 package org.yakindu.sct.ui.editor.editor;
 
+import java.awt.event.KeyEvent;
+
 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IProjectDescription;
@@ -253,6 +255,14 @@ public class StatechartDiagramEditor extends DiagramPartitioningEditor implement
 			getKeyHandler().put(KeyStroke.getPressed('+', 0x2b, SWT.MOD1),
 					getActionRegistry().getAction(GEFActionConstants.ZOOM_IN));
 
+			// Zoom in - Unix - Numpad plus
+			getKeyHandler().put(KeyStroke.getPressed('+', SWT.KEYPAD_ADD, SWT.MOD1),
+					getActionRegistry().getAction(GEFActionConstants.ZOOM_IN));
+
+			// Zoom in - Unix - Numpad minus
+			getKeyHandler().put(KeyStroke.getPressed('-', SWT.KEYPAD_SUBTRACT, SWT.MOD1),
+					getActionRegistry().getAction(GEFActionConstants.ZOOM_OUT));
+
 			// Zoom in - Windows - German layout ([CTRL++] propagates char 0x1d)
 			getKeyHandler().put(KeyStroke.getPressed((char) 0x1d, 0x2b, SWT.MOD1),
 					getActionRegistry().getAction(GEFActionConstants.ZOOM_IN));