1 files changed, 90 insertions, 0 deletions
diff --git a/src/jcgp/gui/dragresize/HorizontalDragResize.java b/src/jcgp/gui/dragresize/HorizontalDragResize.java
new file mode 100644
index 0000000..d580878
--- /dev/null
+++ b/src/jcgp/gui/dragresize/HorizontalDragResize.java
@@ -0,0 +1,90 @@
+package jcgp.gui.dragresize;
+
+import javafx.event.EventHandler;
+import javafx.scene.Cursor;
+import javafx.scene.input.MouseEvent;
+import javafx.scene.layout.Region;
+import jcgp.gui.GUI;
+
+/**
+ * 
+ * http://andrewtill.blogspot.co.uk/2012/12/dragging-to-resize-javafx-region.html
+ * 
+ * @author eddy
+ *
+ */
+public class HorizontalDragResize {
+	
+	private boolean dragging = false;
+	private final Region region;
+	
+	private HorizontalDragResize(Region region) {
+		this.region = region;
+	}
+	
+	public static void makeDragResizable(final Region region) {
+		final HorizontalDragResize dr = new HorizontalDragResize(region);
+
+		region.setOnMousePressed(new EventHandler<MouseEvent>() {
+			@Override
+			public void handle(MouseEvent event) {
+		        dr.mousePressed(event);
+			}
+		});
+		region.setOnMouseDragged(new EventHandler<MouseEvent>() {
+			@Override
+			public void handle(MouseEvent event) {
+				dr.mouseDragged(event);
+			}
+		});
+		region.setOnMouseMoved(new EventHandler<MouseEvent>() {
+			@Override
+			public void handle(MouseEvent event) {
+				dr.mouseMoved(event);
+			}
+		});
+		region.setOnMouseReleased(new EventHandler<MouseEvent>() {
+			@Override
+			public void handle(MouseEvent event) {
+				dr.mouseReleased();
+			}
+		});
+		
+	}
+	
+	private void mousePressed(MouseEvent event) {
+		if(isInDraggableZone(event)) {
+	        dragging = true;
+        }
+	}
+
+	private void mouseDragged(MouseEvent event) {
+		if(dragging) {
+			double newWidth = region.getWidth() - event.getX();
+			if (newWidth >= region.getMinWidth()) {
+				region.setPrefWidth(newWidth);
+			} else {
+				region.setPrefWidth(region.getMinWidth());
+			}
+		}
+	}
+	
+	private void mouseMoved(MouseEvent event) {
+		if(isInDraggableZone(event) || dragging) {
+			region.setCursor(Cursor.H_RESIZE);
+		}
+		else {
+			region.setCursor(Cursor.DEFAULT);
+		}
+	}
+
+	private void mouseReleased() {
+		dragging = false;
+		region.setCursor(Cursor.DEFAULT);
+	}
+
+	private boolean isInDraggableZone(MouseEvent event) {
+		return event.getX() < (GUI.RESIZE_MARGIN);
+	}
+
+}