package research;
import research.connection.LineConnection;
import research.connection.ElbowConnection2;
import research.connector.Connector;
import java.awt.*;
import java.awt.event.InputEvent;
import research.util.Geom;
/**
* Created by IntelliJ IDEA.
* User: guanly
* Date: 2004-6-22
* Time: 1:00:59
* To change this template use File | Settings | File Templates.
*/
public class ElbowHandle2 extends AbstractHandle {
private int fSegment;
private int fLastX, fLastY; // previous mouse position
private transient Point initStartOffset;
private transient Point initEndOffset;
public ElbowHandle2(ElbowConnection2 owner, int segment) {
super(owner);
fSegment = segment;
}
public void invokeStart(int x, int y, DrawingView view) {
fLastX = x;
fLastY = y;
ElbowConnection2 line = ownerConnection();
initStartOffset = (Point) line.getAttribute(ElbowConnection2.START_OFFSET);
if (initStartOffset == null)
initStartOffset = new Point(0, 0);
else {
initStartOffset = new Point(initStartOffset);
}
initEndOffset = (Point) line.getAttribute(ElbowConnection2.END_OFFSET);
if (initEndOffset == null)
initEndOffset = new Point(0, 0);
else {
initEndOffset = new Point(initEndOffset);
}
}
public void invokeStep(InputEvent inputEvent, int x, int y, int anchorX, int anchorY, DrawingView view) {
ElbowConnection2 line = ownerConnection();
if (fSegment == 0) {
if ((inputEvent != null) && (inputEvent.isShiftDown())) {//������ʼ�˵����ӷ�ʽ(H <-> V)
Point p1 = line.pointAt(fSegment);
line.insertPointAt(new Point(p1), fSegment + 1);
int displayMode = ((Integer) line.getAttribute(ElbowConnection2.DISPLAY_MODE)).intValue();
if (displayMode == ElbowConnection2.V_V_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.H_V_MODE));
} else if (displayMode == ElbowConnection2.H_H_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.V_H_MODE));
} else if (displayMode == ElbowConnection2.H_V_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.V_V_MODE));
} else if (displayMode == ElbowConnection2.V_H_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.H_H_MODE));
} else {
//should not go here
System.out.println("ElbowHandle2: should not go here");
}
fSegment = 1;
} else if ((inputEvent != null) && (inputEvent.isControlDown())) {//�ı俪ʼ������������ӵ�ƫ��
int displayMode = ((Integer) line.getAttribute(ElbowConnection2.DISPLAY_MODE)).intValue();
Point startOffset = (Point) line.getAttribute(ElbowConnection2.START_OFFSET);
if (startOffset == null)
startOffset = new Point(0, 0);
if (displayMode == ElbowConnection2.V_V_MODE || displayMode == ElbowConnection2.V_H_MODE) {
startOffset.x = x - anchorX + initStartOffset.x;
line.setAttribute(ElbowConnection2.START_OFFSET, startOffset);
line.layoutConnection();
} else if (displayMode == ElbowConnection2.H_H_MODE || displayMode == ElbowConnection2.H_V_MODE) {
startOffset.y = y - anchorY + initStartOffset.y;
line.setAttribute(ElbowConnection2.START_OFFSET, startOffset);
line.layoutConnection();
} else {
//should not go here
System.out.println("ElbowHandle2: should not go here");
}
} else {//���ѿ�ʼ��
Point p1 = line.pointAt(fSegment);
Point p2 = line.pointAt(fSegment + 1);
int _x = (p1.x + p2.x) / 2;
int _y = (p1.y + p2.y) / 2;
line.insertPointAt(new Point(_x, _y), fSegment + 1);
line.insertPointAt(new Point(_x, _y), fSegment + 1);
fSegment = 2;
}
} else if (fSegment == line.pointCount() - 2) {//����ĩ�˵����ӷ�ʽ(H <-> V)
if ((inputEvent != null) && (inputEvent.isShiftDown())) {
Point p2 = line.pointAt(fSegment + 1);
line.insertPointAt(new Point(p2), fSegment + 1);
int displayMode = ((Integer) line.getAttribute(ElbowConnection2.DISPLAY_MODE)).intValue();
if (displayMode == ElbowConnection2.V_V_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.V_H_MODE));
} else if (displayMode == ElbowConnection2.H_H_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.H_V_MODE));
} else if (displayMode == ElbowConnection2.H_V_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.H_H_MODE));
} else if (displayMode == ElbowConnection2.V_H_MODE) {
line.setAttribute(ElbowConnection2.DISPLAY_MODE, new Integer(ElbowConnection2.V_V_MODE));
} else {
//should not go here
System.out.println("ElbowHandle2: should not go here");
}
} else if ((inputEvent != null) && (inputEvent.isControlDown())) {//�ı�ĩ������������ӵ�ƫ��
int displayMode = ((Integer) line.getAttribute(ElbowConnection2.DISPLAY_MODE)).intValue();
Point endOffset = (Point) line.getAttribute(ElbowConnection2.END_OFFSET);
if (endOffset == null)
endOffset = new Point(0, 0);
if (displayMode == ElbowConnection2.V_V_MODE || displayMode == ElbowConnection2.H_V_MODE) {
endOffset.x = x - anchorX + initEndOffset.x;
line.setAttribute(ElbowConnection2.END_OFFSET, endOffset);
line.layoutConnection();
} else if (displayMode == ElbowConnection2.V_H_MODE || displayMode == ElbowConnection2.H_H_MODE) {
endOffset.y = y - anchorY + initEndOffset.y;
line.setAttribute(ElbowConnection2.END_OFFSET, endOffset);
line.layoutConnection();
} else {
//should not go here
System.out.println("ElbowHandle2: should not go here");
}
} else {//����ĩ��
Point p1 = line.pointAt(fSegment);
Point p2 = line.pointAt(fSegment + 1);
int _x = (p1.x + p2.x) / 2;
int _y = (p1.y + p2.y) / 2;
line.insertPointAt(new Point(_x, _y), fSegment + 1);
line.insertPointAt(new Point(_x, _y), fSegment + 1);
}
} else {
Point p1 = line.pointAt(fSegment);
Point p2 = line.pointAt(fSegment + 1);
int ddx = x - fLastX;
int ddy = y - fLastY;
boolean _isCurrentVertical = isCurrentVertical();
Point np1;
Point np2;
//if (isVertical(p1, p2)) {
if (_isCurrentVertical) {
int cx = constrainX(p1.x + ddx);
np1 = new Point(cx, p1.y);
np2 = new Point(cx, p2.y);
} else {
int cy = constrainY(p1.y + ddy);
np1 = new Point(p1.x, cy);
np2 = new Point(p2.x, cy);
}
line.setPointAt(np1, fSegment);
line.setPointAt(np2, fSegment + 1);
fLastX = x;
fLastY = y;
}
}
public void invokeEnd(int x, int y, int anchorX, int anchorY, DrawingView view) {
ElbowConnection2 line = ownerConnection();
if (line.pointCount() <= 4) return;
boolean _isCurrentVertical = isCurrentVertical();
Point p1 = line.pointAt(fSegment);
Point p2 = line.pointAt(fSegment + 1);
boolean hasJointed = false;
if (fSegment >= 2) {
Point p0 = line.pointAt(fSegment - 1);
Point ps = line.pointAt(fSegment - 2);
if (_isCurrentVertical) {
if (Math.abs(ps.x - p2.x) < 3) {
p2.x = ps.x;
line.setPointAt(p2, fSegment + 1);
line.removePointAt(fSegment - 1);
line.removePointAt(fSegment - 1);
hasJointed = true;
}
} else {
if (Math.abs(ps.y - p2.y) < 3) {
p2.y = ps.y;
line.setPointAt(p2, fSegment + 1);
line.removePointAt(fSegment - 1);
line.removePointAt(fSegment - 1);
hasJointed = true;
}
}
}
if (!hasJointed && fSegment <= line.pointCount() - 4) {
Point p3 = line.pointAt(fSegment + 2);
Point pe = line.pointAt(fSegment + 3);
if (_isCurrentVertical) {
if (Math.abs(pe.x - p1.x) < 3) {
p1.x = pe.x;
line.setPointAt(p1, fSegment);
line.removePointAt(fSegment + 1);
line.removePointAt(fSegment + 1);
hasJointed = true;
}
} else {
if (Math.abs(pe.y - p1.y) < 3) {
p1.y = pe.y;
line.setPointAt(p1, fSegment);
line.removePointAt(fSegment + 1);
line.removePointAt(fSegment + 1);
hasJointed = true;
}
}
}
}
private boolean isCurrentVertical() {
ElbowConnection2 line = ownerConnection();
boolean _isStartVertical = true;
int displayMode = ((Integer) line.getAttribute(ElbowConnection2.DISPLAY_MODE)).intValue();
if (displayMode == ElbowConnection2.V_V_MODE) {
_isStartVertical = true;
} else if (displayMode == ElbowConnection2.H_H_MODE) {
_isStartVertical = false;
} else if (displayMode == ElbowConnection2.H_V_MODE) {
_isStartVertical = false;
} else if (displayMode == ElbowConnection2.V_H_MODE) {
_isStartVertical = true;
} else {
int direction = line.getStartConnector().getDirection();
if (direction == Connector.NORTH_DIRECTION || direction == Connector.SOUTH_DIRECTION) {
_isStartVertical = true;
} else if (direction == Connector.WEST_DIRECTION || direction == Connector.EAST_DIRECTION) {
_isStartVertical = false;
} else if (direction == Connector.NONE_DIRECTION) {
_isStartVertical = false;
}
}
boolean _isCurrentVertical = _isStartVertical;
if (fSegment % 2 == 1)
_isCurrentVertical = !_isStartVertical;
return _isCurrentVertical;
}
/**
* private boolean isVertical(Point p1, Point p2) {
* return p1.x == p2.x;
* }
*/
public Point locate() {
LineConnection line = ownerConnection();
int segment = Math.min(fSegment, line.pointCount() - 2);
Point p1 = line.pointAt(segment);
Point p2 = line.pointAt(segment + 1);
return new Point((p1.x + p2.x) / 2, (p1.y + p2.y) / 2);
}
public void draw(Graphics g) {
Rectangle r = displayBox();
g.setColor(Color.yellow);
g.fillOval(r.x, r.y, r.width, r.height);
g.setColor(Color.black);
g.drawOval(r.x, r.y, r.width, r.height);
}
private int constrainX(int x) {
LineConnection line = ownerConnection();
Figure startFigure = line.getStartConnector().owner();
Figure endFigure = line.getEndConnector().owner();
Rectangle start = startFigure.getDisplayBox();
Rectangle end = endFigure.getDisplayBox();
Insets i1 = startFigure.connectionInsets();
Insets i2 = endFigure.connectionInsets();
int r1x, r1width, r2x, r2width;
r1x = start.x + i1.left;
r1width = start.width - i1.left - i1.right - 1;
r2x = end.x + i2.left;
r2width = end.width - i2.left - i2.right - 1;
if (fSegment == 0) {
x = Geom.range(r1x, r1x + r1width, x);
}
if (fSegment == line.pointCount() - 2) {
x = Geom.range(r2x, r2x + r2width, x);
}
return x;
}
private int constrainY(int y) {
LineConnection line = ownerConnection();
Figure startFigure = line.getStartConnector().owner();
Figure endFigure = line.getEndConnector().owner();
Rectangle start = startFigure.getDisplayBox();
Rectangle end = endFigure.getDisplayBox();
Insets i1 = startFigure.connectionInsets();
Insets i2 = endFigure.connectionInsets();
int r1y, r1height, r2y, r2height;
r1y = start.y + i1.top;
r1height = start.height - i1.top - i1.bottom - 1;
r2y = end.y + i2.top;
r2height = end.height - i2.top - i2.bottom - 1;
if (fSegment == 0) {
y = Geom.range(r1y, r1y + r1height, y);
}
if (fSegment == line.pointCount() - 2) {
y = Geom.range(r2y, r2y + r2height, y);
}
return y;
}
private ElbowConnection2 ownerConnection() {
return (ElbowConnection2) owner();
}
}