1 package org.simantics.scenegraph.swing;
3 import java.awt.AWTEvent;
4 import java.awt.Component;
6 import java.awt.event.MouseEvent;
7 import java.awt.event.MouseWheelEvent;
8 import java.awt.geom.AffineTransform;
10 import org.simantics.g2d.canvas.Hints;
11 import org.simantics.g2d.chassis.AWTChassis;
12 import org.simantics.scenegraph.INode;
13 import org.simantics.scenegraph.g2d.G2DSceneGraph;
14 import org.simantics.scenegraph.g2d.events.SGMouseEvent;
15 import org.simantics.scenegraph.g2d.events.SGMouseWheelEvent;
16 import org.simantics.scenegraph.swing.ComponentNode.ComponentContainer;
18 public class JComponentUtils {
20 private static int getAbsoluteX(Component c, int init) {
21 if(c instanceof ComponentContainer) return init;
22 else return getAbsoluteX(c.getParent(), init+c.getX());
25 private static int getAbsoluteY(Component c, int init) {
26 if(c instanceof ComponentContainer) return init;
27 else return getAbsoluteY(c.getParent(), init+c.getY());
30 private static Point transform(int eventX, int eventY, JComponentSG comp, INode node) {
32 if(node == null) return null;
34 G2DSceneGraph sg = (G2DSceneGraph)node.getRootNode();
35 AWTChassis chassis = (AWTChassis)(sg.getRootPane().getParent());
37 int trX = getAbsoluteX(comp.getComponent(), 0);
38 int trY = getAbsoluteY(comp.getComponent(), 0);
40 AffineTransform ct = chassis.getCanvasContext().getDefaultHintContext().getHint(Hints.KEY_CANVAS_TRANSFORM);
41 if(ct == null) return null;
44 eventX -= ct.getTranslateX();
45 eventX /= ct.getScaleX();
48 eventY -= ct.getTranslateY();
49 eventY /= ct.getScaleY();
52 return new Point(eventX, eventY);
56 public static boolean contains(int eventX, int eventY, JComponentSG comp, INode node) {
58 Point transformed = transform(eventX, eventY, comp, node);
60 if(transformed == null) return comp.containsTransformed(new Point(eventX, eventY));
62 boolean result = comp.containsTransformed(transformed);
64 // System.err.println(result + " - contains(" + comp.getClass().getCanonicalName() + ") ? (" + origX + "," + origY + ")=>(" + eventX + "," + eventY + ")");
70 public static AWTEvent relocate(AWTEvent e, JComponentSG comp, INode node) {
72 if(node == null) return e;
74 if(!(e instanceof MouseEvent)) return e; // Only for mouse events
75 MouseEvent me = (MouseEvent)e;
77 Point transformed = transform(me.getX(), me.getY(), comp, node);
78 if(transformed == null) return e;
80 if(me.getID() == MouseWheelEvent.MOUSE_WHEEL) {
81 return new SGMouseWheelEvent(me.getComponent(), me.getID(), me.getWhen(), me.getModifiers(), transformed.x, transformed.y, me.getClickCount(), me.isPopupTrigger(), ((MouseWheelEvent)me).getScrollType(), ((MouseWheelEvent)me).getScrollAmount(), ((MouseWheelEvent)me).getWheelRotation(), me);
83 return new SGMouseEvent(me.getComponent(), me.getID(), me.getWhen(), me.getModifiers(), transformed.x, transformed.y, me.getClickCount(), me.isPopupTrigger(), me.getButton(), me);