public void propertyChange(PropertyChangeEvent evt) {
ShapeCreationPanel scp = (ShapeCreationPanel) evt.getSource();
if (SCALE_FACTOR_KEY.equals(evt.getPropertyName())) {
refreshScaleFactor(scp);
scp.repaint();
} else if (CONSTRAINT_KEY.equals(evt.getPropertyName())) {
scp.repaint();
} else if (ShapeCreationPanel.DATA_MODEL_KEY.equals(evt.getPropertyName())) {
((DataModel) evt.getOldValue()).removeListener(myDataModelListener);
invalidateMirror(scp);
((DataModel) evt.getNewValue()).addListener(myDataModelListener);
} else if (ShapeCreationPanel.MODE_KEY.equals(evt.getPropertyName())) {
if (ShapeCreationPanel.MODE_CREATE.equals(evt.getNewValue())) {
scp.getSelectionModel().select(-1, -1, null);
}
updateCursor(scp);
}
}
@Override
public void mousePressed(MouseEvent e) {
ShapeCreationPanel scp = (ShapeCreationPanel) e.getComponent();
scp.requestFocus();
boolean isCreating = ShapeCreationPanel.MODE_CREATE.equals(scp.getMode());
if (e.getClickCount() > 1 && isCreating) {
scp.setMode(ShapeCreationPanel.MODE_DEFAULT);
return;
}
lastUntransformedX = e.getX();
lastUntransformedY = e.getY();
Point2D p = new Point2D.Double(e.getX(), e.getY());
try {
scp.getTransform().createInverse().transform(p, p);
} catch (NoninvertibleTransformException e2) {
throw new RuntimeException(e2);
}
float x = (float) p.getX();
float y = (float) p.getY();
clickX = x;
clickY = y;
if (isCreating) {
int selectedShape = scp.getSelectionModel().getSelection().getShapeIndex();
if (selectedShape == -1) {
GeneralPath path = new GeneralPath();
path.moveTo(x, y);
int newIndex = scp.getDataModel().addShape(path);
scp.getSelectionModel().select(newIndex, 0, Handle.NEXT_CONTROL);
} else {
/**
* We didn't give a next control point to the *last* node yet. Now we do. If the last
* node in a path has a next control point: that path will be closed.
*/
CubicPath[] paths = getCubicPaths(scp);
CubicPath path = paths[selectedShape];
int i = path.getNodeCount() - 1;
Point2D lastPoint = path.getNode(i, null);
Point2D lastPointCtrlPoint = path.getPrevControlForNode(i, null);
if (lastPointCtrlPoint == null) lastPointCtrlPoint = lastPoint;
double dx = lastPoint.getX() - lastPointCtrlPoint.getX();
double dy = lastPoint.getY() - lastPointCtrlPoint.getY();
path.setNextControlForNode(
i, new Point2D.Double(lastPoint.getX() + dx, lastPoint.getY() + dy));
path.lineTo(x, y);
changingDataModel.add(Thread.currentThread());
try {
scp.getDataModel().setShape(selectedShape, path);
} finally {
changingDataModel.remove(Thread.currentThread());
}
}
} else {
Selection selection = getSelection(scp, e.getPoint());
scp.getSelectionModel().select(selection);
}
}
@Override
public void mouseDragged(MouseEvent e) {
try {
if (e.getClickCount() > 1) return;
ShapeCreationPanel scp = (ShapeCreationPanel) e.getComponent();
boolean isCreating = ShapeCreationPanel.MODE_CREATE.equals(scp.getMode());
CubicPath[] paths = getCubicPaths(scp);
int i = scp.getSelectionModel().getSelection().getShapeIndex();
CubicPath path = i == -1 ? null : paths[i];
Point2D p = new Point2D.Double(e.getX(), e.getY());
try {
scp.getTransform().createInverse().transform(p, p);
} catch (NoninvertibleTransformException e2) {
throw new RuntimeException(e2);
}
float x = (float) p.getX();
float y = (float) p.getY();
boolean replacePath = true;
if (isCreating) {
int nodeIndex = path.getNodeCount() - 1;
float dx = x - clickX;
float dy = y - clickY;
path.setPrevControlForNode(nodeIndex, clickX - dx, clickY - dy);
} else {
Selection s = scp.getSelectionModel().getSelection();
int nodeIndex = s.getNodeIndex();
if (nodeIndex != -1) {
if (Handle.PREVIOUS_CONTROL.equals(s.getHandle())) {
path.setPrevControlForNode(nodeIndex, new Point2D.Double(x, y));
if (Constraint.ANGLE_ONLY.equals(getConstraint(scp))) {
path.setNextControlForNodeFromPrev(nodeIndex, false);
} else if (Constraint.ANGLE_AND_DISTANCE.equals(getConstraint(scp))) {
path.setNextControlForNodeFromPrev(nodeIndex, true);
}
} else if (Handle.PRIMARY.equals(s.getHandle())) {
path.setNode(nodeIndex, new Point2D.Double(x, y), true);
} else { // next control:
path.setNextControlForNode(nodeIndex, new Point2D.Double(x, y));
if (Constraint.ANGLE_ONLY.equals(getConstraint(scp))) {
path.setPrevControlForNodeFromNext(nodeIndex, false);
} else if (Constraint.ANGLE_AND_DISTANCE.equals(getConstraint(scp))) {
path.setPrevControlForNodeFromNext(nodeIndex, true);
}
}
} else {
float dx = e.getX() - lastUntransformedX;
float dy = e.getY() - lastUntransformedY;
nudge(scp, dx, dy);
replacePath = false;
}
}
if (i >= 0 && replacePath) {
changingDataModel.add(Thread.currentThread());
try {
scp.getDataModel().setShape(i, path);
} finally {
changingDataModel.remove(Thread.currentThread());
}
}
} finally {
lastUntransformedX = e.getX();
lastUntransformedY = e.getY();
}
}