bundles/org.simantics.scenegraph.swing/src/org/simantics/scenegraph/swing/JComponentUtils.java

   1 package org.simantics.scenegraph.swing;\r
   2 \r
   3 import java.awt.AWTEvent;\r
   4 import java.awt.Component;\r
   5 import java.awt.Point;\r
   6 import java.awt.event.MouseEvent;\r
   7 import java.awt.event.MouseWheelEvent;\r
   8 import java.awt.geom.AffineTransform;\r
   9 \r
  10 import org.simantics.g2d.canvas.Hints;\r
  11 import org.simantics.g2d.chassis.AWTChassis;\r
  12 import org.simantics.scenegraph.INode;\r
  13 import org.simantics.scenegraph.g2d.G2DSceneGraph;\r
  14 import org.simantics.scenegraph.g2d.events.SGMouseEvent;\r
  15 import org.simantics.scenegraph.g2d.events.SGMouseWheelEvent;\r
  16 import org.simantics.scenegraph.swing.ComponentNode.ComponentContainer;\r
  17 \r
  18 public class JComponentUtils {\r
  19 \r
  20     private static int getAbsoluteX(Component c, int init) {\r
  21         if(c instanceof ComponentContainer) return init;\r
  22         else return getAbsoluteX(c.getParent(), init+c.getX());\r
  23     }\r
  24     \r
  25     private static int getAbsoluteY(Component c, int init) {\r
  26         if(c instanceof ComponentContainer) return init;\r
  27         else return getAbsoluteY(c.getParent(), init+c.getY());\r
  28     }\r
  29 \r
  30     private static Point transform(int eventX, int eventY, JComponentSG comp, INode node) {\r
  31         \r
  32         if(node == null) return null;\r
  33         \r
  34                 G2DSceneGraph sg = (G2DSceneGraph)node.getRootNode();\r
  35                 AWTChassis chassis = (AWTChassis)(sg.getRootPane().getParent());\r
  36                 \r
  37                 int trX = getAbsoluteX(comp.getComponent(), 0);\r
  38                 int trY = getAbsoluteY(comp.getComponent(), 0);\r
  39                 \r
  40                 AffineTransform ct = chassis.getCanvasContext().getDefaultHintContext().getHint(Hints.KEY_CANVAS_TRANSFORM);\r
  41                 if(ct == null) return null;\r
  42 \r
  43                 eventX += trX;\r
  44                 eventX -= ct.getTranslateX();\r
  45                 eventX /= ct.getScaleX();\r
  46                 eventX -= trX;\r
  47                 eventY += trY;\r
  48                 eventY -= ct.getTranslateY();\r
  49                 eventY /= ct.getScaleY();\r
  50                 eventY -= trY;\r
  51                 \r
  52                 return new Point(eventX, eventY);\r
  53         \r
  54     }\r
  55     \r
  56         public static boolean contains(int eventX, int eventY, JComponentSG comp, INode node) {\r
  57                 \r
  58                 Point transformed = transform(eventX, eventY, comp, node);\r
  59 \r
  60                 if(transformed == null) return comp.containsTransformed(new Point(eventX, eventY));\r
  61                 \r
  62                 boolean result = comp.containsTransformed(transformed); \r
  63                 \r
  64 //              System.err.println(result + " - contains(" + comp.getClass().getCanonicalName() + ") ? (" + origX + "," + origY + ")=>(" + eventX + "," + eventY + ")");\r
  65                 \r
  66                 return result; \r
  67                 \r
  68         }\r
  69         \r
  70     public static AWTEvent relocate(AWTEvent e, JComponentSG comp, INode node) {\r
  71 \r
  72                 if(node == null) return e;\r
  73 \r
  74         if(!(e instanceof MouseEvent)) return e; // Only for mouse events\r
  75         MouseEvent me = (MouseEvent)e;\r
  76 \r
  77                 Point transformed = transform(me.getX(), me.getY(), comp, node);\r
  78                 if(transformed == null) return e;\r
  79 \r
  80         if(me.getID() == MouseWheelEvent.MOUSE_WHEEL) {\r
  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);\r
  82         } else {\r
  83             return new SGMouseEvent(me.getComponent(), me.getID(), me.getWhen(), me.getModifiers(), transformed.x, transformed.y, me.getClickCount(), me.isPopupTrigger(), me.getButton(), me);\r
  84         }\r
  85         \r
  86     }   \r
  87         \r
  88 }\r