/*
* Licensed Materials - Property of Rogue Wave Software, Inc.
* © Copyright Rogue Wave Software, Inc. 2014, 2015
* © Copyright IBM Corp. 2009, 2014
* © Copyright ILOG 1996, 2009
* All Rights Reserved.
*
* Note to U.S. Government Users Restricted Rights:
* The Software and Documentation were developed at private expense and
* are "Commercial Items" as that term is defined at 48 CFR 2.101,
* consisting of "Commercial Computer Software" and
* "Commercial Computer Software Documentation", as such terms are
* used in 48 CFR 12.212 or 48 CFR 227.7202-1 through 227.7202-4,
* as applicable.
*/
import ilog.views.*;
import ilog.views.accelerator.*;
import ilog.views.graphic.*;
//import ilog.views.util.IlvProductUtil;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
* An object interactor that allows to move a graphic object.
*/
public class MoveObjectInteractor
extends IlvObjectInteractor
{
private IlvRect mrect;
private float dx, dy;
private boolean dragging = false;
/**
* Creates an instance of <code>MoveObjectInteractor</code>.
*/
public MoveObjectInteractor()
{
super();
}
/**
* Moves the graphic object.
*/
private void doMove(IlvGraphic graphic, IlvObjectInteractorContext context)
{
if (mrect == null)
return;
// transform mrect from view coordinates to manager coordinates
IlvTransformer t = context.getTransformer();
if (t != null)
t.inverse(mrect);
graphic.getGraphicBag().moveObject(graphic, mrect.x, mrect.y, true);
}
/**
* Processes the button down events.
*/
protected boolean processButtonDown(IlvGraphic obj, MouseEvent event,
IlvObjectInteractorContext context)
{
if ((event.getModifiers() & InputEvent.BUTTON2_MASK) != 0 ||
(event.getModifiers() & InputEvent.BUTTON3_MASK) != 0)
return true ;
if (dragging)
return true ;
dragging = true;
IlvPoint p = new IlvPoint(event.getX(), event.getY());
mrect = obj.boundingBox(context.getTransformer());
dx = p.x - mrect.x;
dy = p.y - mrect.y;
invalidateGhost(obj, context);
return true;
}
/**
* Processes the button dragged events.
*/
protected boolean processButtonDragged(IlvGraphic obj ,
MouseEvent event,
IlvObjectInteractorContext context)
{
if (!dragging || mrect == null)
return false;
IlvPoint p = new IlvPoint(event.getX(), event.getY());
invalidateGhost(obj, context);
mrect.move(p.x - dx, p.y - dy);
IlvTransformer t = context.getTransformer();
if (t != null)
t.inverse(mrect);
context.ensureVisible(p);
t = context.getTransformer();
if (t != null)
t.apply(mrect);
invalidateGhost(obj, context);
return true;
}
/**
* Processes the button up events.
*/
protected boolean processButtonUp(IlvGraphic obj, MouseEvent event,
IlvObjectInteractorContext context)
{
if (!dragging || mrect == null)
return true;
dragging = false;
invalidateGhost(obj, context);
doMove(obj, context);
mrect = null;
return true;
}
/**
* Processes the events.
*/
public boolean processEvent(IlvGraphic obj, AWTEvent event,
IlvObjectInteractorContext context)
{
switch (event.getID()) {
case MouseEvent.MOUSE_PRESSED:
return processButtonDown(obj, (MouseEvent)event, context);
case MouseEvent.MOUSE_DRAGGED:
return processButtonDragged(obj, (MouseEvent)event, context);
case MouseEvent.MOUSE_RELEASED:
return processButtonUp(obj, (MouseEvent)event, context);
default:
return false;
}
}
/**
* Called when the graphic that has this object interactor is entered.
* That is, when this object interactor starts receiving events.
*/
public void onEnter(IlvGraphic sel, IlvObjectInteractorContext context)
{
// System.err.println("On enter " + sel);
}
/**
* Called when the graphic that has this object interactor is exited.
* That is, when this object interactor stops receiving events.
*/
public void onExit(IlvGraphic sel, IlvObjectInteractorContext context)
{
// System.err.println("On exit " + sel);
}
/**
* This method is called by the view when the view is drawn.
* <p>
* This overridden implementation of the method from the base class
* calls the <code>drawGhost</code> method.
*
* @param obj The graphic object to which the object interactor is associated.
* @param g The <code>Graphics</code> where <code>obj</code> is drawn.
* @param context The interactor context.
*/
public void handleExpose(IlvGraphic obj,
Graphics g,
IlvObjectInteractorContext context)
{
drawGhost(obj, g, context);
}
/**
* Draws the graphic object in xor mode while moving.
*/
protected void drawGhost(IlvGraphic obj, Graphics g,
IlvObjectInteractorContext context)
{
if (mrect != null) {
g.setColor(context.getDefaultGhostColor());
g.setXORMode(context.getDefaultXORColor());
IlvTransformer t = context.getTransformer();
IlvRect r = obj.boundingBox(t);
IlvTransformer t1 = new IlvTransformer(new IlvPoint(mrect.x - r.x,
mrect.y -r.y));
t.compose(t1);
obj.draw(g, t);
}
}
/**
* Invalidates the region where the ghost is drawn.
*/
private void invalidateGhost(IlvGraphic obj,
IlvObjectInteractorContext context)
{
if (obj == null || context == null)
return; // for safety
if (mrect == null || mrect.width == 0 || mrect.height == 0)
return;
IlvRect invalidRegion = new IlvRect(mrect);
context.repaint(invalidRegion);
}
public static void main(String[] args)
{
// This sample uses JViews Diagrammer features. When deploying an
// application that includes this code, you need to be in possession
// of a Rogue Wave JViews Diagrammer Deployment license.
// IlvProductUtil.DeploymentLicenseRequired(
// IlvProductUtil.JViews_Diagrammer_Deployment);
// Sun recommends that to put the entire GUI initialization into the
// AWT thread
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(new Dimension(300, 300));
IlvManager mgr = new IlvManager();
mgr.addAccelerator(new IlvIdentityAccelerator(
KeyEvent.KEY_PRESSED, KeyEvent.VK_I, 0));
mgr.addAccelerator(new IlvZoomOutAccelerator(
KeyEvent.KEY_PRESSED, KeyEvent.VK_U, KeyEvent.CTRL_MASK));
mgr.addAccelerator(new IlvZoomInAccelerator(
KeyEvent.KEY_PRESSED, KeyEvent.VK_Z, KeyEvent.CTRL_MASK));
mgr.addAccelerator(new IlvFitToSizeAccelerator(
KeyEvent.KEY_PRESSED, KeyEvent.VK_F, 0));
IlvGraphic g = new IlvRectangle(new IlvRect(10, 10, 30, 30));
g.setFillOn(true);
g.setStrokeOn(true);
mgr.addObject(g, false);
g.setObjectInteractor(IlvObjectInteractor.Get("MoveObjectInteractor"));
IlvManagerView v = new IlvManagerView(mgr);
f.getContentPane().setLayout(new BorderLayout());
f.getContentPane().add("Center", v);
f.setVisible(true);
}
});
}
}