001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
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014: * License. When distributing the software, include this License Header
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019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
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022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
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030: * If you wish your version of this file to be governed by only the CDDL
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040: */
041: package org.netbeans.modules.visual.anchor;
042:
043: import org.netbeans.api.visual.widget.Widget;
044: import org.netbeans.api.visual.anchor.Anchor;
045:
046: import java.awt.*;
047:
048: /**
049: * @author David Kaspar
050: */
051: // TODO - scene component location is not 100% attach to the bounding rectangle when the line goes far to the bottom-left-bottom direction
052: public final class RectangularAnchor extends Anchor {
053:
054: private boolean includeBorders;
055:
056: public RectangularAnchor(Widget widget, boolean includeBorders) {
057: super (widget);
058: // assert widget != null;
059: this .includeBorders = includeBorders;
060: }
061:
062: public Result compute(Entry entry) {
063: Point relatedLocation = getRelatedSceneLocation();
064: Point oppositeLocation = getOppositeSceneLocation(entry);
065:
066: Widget widget = getRelatedWidget();
067: Rectangle bounds = widget.getBounds();
068: if (!includeBorders) {
069: Insets insets = widget.getBorder().getInsets();
070: bounds.x += insets.left;
071: bounds.y += insets.top;
072: bounds.width -= insets.left + insets.right;
073: bounds.height -= insets.top + insets.bottom;
074: }
075: bounds = widget.convertLocalToScene(bounds);
076:
077: if (bounds.isEmpty()
078: || relatedLocation.equals(oppositeLocation))
079: return new Anchor.Result(relatedLocation,
080: Anchor.DIRECTION_ANY);
081:
082: float dx = oppositeLocation.x - relatedLocation.x;
083: float dy = oppositeLocation.y - relatedLocation.y;
084:
085: float ddx = Math.abs(dx) / (float) bounds.width;
086: float ddy = Math.abs(dy) / (float) bounds.height;
087:
088: Anchor.Direction direction;
089:
090: if (ddx >= ddy) {
091: direction = dx >= 0.0f ? Direction.RIGHT : Direction.LEFT;
092: } else {
093: direction = dy >= 0.0f ? Direction.BOTTOM : Direction.TOP;
094: }
095:
096: float scale = 0.5f / Math.max(ddx, ddy);
097:
098: Point point = new Point(Math.round(relatedLocation.x + scale
099: * dx), Math.round(relatedLocation.y + scale * dy));
100: return new Anchor.Result(point, direction);
101: }
102:
103: }
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