001 /* 002 Copyright (C) 2003 Laurent Martelli <laurent@aopsys.com> 003 004 This program is free software; you can redistribute it and/or modify 005 it under the terms of the GNU Lesser General Public License as 006 published by the Free Software Foundation; either version 2 of the 007 License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU Lesser General Public License for more details. 013 014 You should have received a copy of the GNU Lesser General Public 015 License along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 017 */ 018 019 020 package org.objectweb.jac.ide.diagrams; 021 022 import CH.ifa.draw.framework.DrawingEditor; 023 import CH.ifa.draw.framework.Figure; 024 import CH.ifa.draw.framework.FigureEnumeration; 025 import CH.ifa.draw.standard.AbstractTool; 026 import java.awt.event.MouseEvent; 027 import java.util.HashSet; 028 029 /** 030 * This drag tracker handles figures attached to links so that they do 031 * not drift. 032 */ 033 public class DragTracker extends AbstractTool { 034 035 Figure anchorFigure; 036 int lastX, lastY; // previous mouse position 037 038 public DragTracker(DrawingEditor newDrawingEditor, Figure anchor) { 039 super(newDrawingEditor); 040 anchorFigure = anchor; 041 } 042 043 public void mouseDown(MouseEvent e, int x, int y) { 044 super.mouseDown(e, x, y); 045 lastX = x; 046 lastY = y; 047 048 if (e.isShiftDown()) { 049 view().toggleSelection(anchorFigure); 050 anchorFigure = null; 051 } else if (!view().isFigureSelected(anchorFigure)) { 052 view().clearSelection(); 053 view().addToSelection(anchorFigure); 054 } 055 view().repairDamage(); 056 } 057 058 public void mouseDrag(MouseEvent e, int x, int y) { 059 super.mouseDrag(e, x, y); 060 061 if ((Math.abs(x - fAnchorX) > 4) || (Math.abs(y - fAnchorY) > 4)) { 062 org.objectweb.jac.util.Log.trace("tools","MOVED!"); 063 064 // Get the link figures 065 HashSet linkFigures = new HashSet(); 066 FigureEnumeration figures = view().selectionElements(); 067 while (figures.hasMoreElements()) { 068 Figure figure = figures.nextFigure(); 069 if (figure instanceof LinkFigure) { 070 linkFigures.add(((LinkFigure)figure).getSubstance()); 071 } 072 } 073 074 figures = view().selectionElements(); 075 while (figures.hasMoreElements()) { 076 Figure figure = figures.nextFigure(); 077 if (! ((figure instanceof AttachedTextFigure) 078 && linkFigures.contains(((AttachedTextFigure)figure).getSubstance()))) { 079 figure.moveBy(x - lastX, y - lastY); 080 } 081 } 082 } 083 lastX = x; 084 lastY = y; 085 } 086 087 public void activate() { 088 } 089 090 public void deactivate() { 091 } 092 }