/**
* Shows an insertion line if there is one or more current children.
*
* @see LayoutEditPolicy#showLayoutTargetFeedback(Request)
*/
protected void showLayoutTargetFeedback(Request request) {
if (getHost().getChildren().size() == 0) return;
Polyline fb = getLineFeedback();
Transposer transposer = new Transposer();
transposer.setEnabled(!isLayoutHorizontal());
int epIndex = getFeedbackIndexFor(request);
Rectangle r = null;
if (epIndex == -1) {
epIndex = getHost().getChildren().size() - 1;
EditPart editPart = (EditPart) getHost().getChildren().get(epIndex);
r = transposer.t(getAbsoluteBounds((GraphicalEditPart) editPart));
} else {
EditPart editPart = (EditPart) getHost().getChildren().get(epIndex);
r = transposer.t(getAbsoluteBounds((GraphicalEditPart) editPart));
Point p = transposer.t(getLocationFromRequest(request));
if (p.x > r.x + (r.width / 2)) {
editPart = (EditPart) getHost().getChildren().get(epIndex);
r = transposer.t(getAbsoluteBounds((GraphicalEditPart) editPart));
}
}
int x = r.x;
Point p1 = new Point(x, r.y - 4);
p1 = transposer.t(p1);
fb.translateToRelative(p1);
Point p2 = new Point(x, r.y + r.height + 4);
p2 = transposer.t(p2);
fb.translateToRelative(p2);
fb.setPoint(p1, 0);
fb.setPoint(p2, 1);
}
/**
* Lazily creates and returns a <code>Polyline</code> Figure for use as feedback.
*
* @return a Polyline figure
*/
protected Polyline getLineFeedback() {
if (insertionLine == null) {
insertionLine = new Polyline();
insertionLine.setLineWidth(2);
insertionLine.addPoint(new Point(0, 0));
insertionLine.addPoint(new Point(10, 10));
addFeedback(insertionLine);
}
return insertionLine;
}
/**
* Refreshes the visual aspects of this, based upon the model (Wire). It changes the wire color
* depending on the state of Wire.
*/
protected void updateSelected() {
final EditPart source = getSource();
if (source != null) {
final int sel = source.getSelected();
final Polyline line = (Polyline) getFigure();
if (sel != SELECTED_NONE) {
line.setLineWidth(2);
} else {
line.setLineWidth(1);
}
}
}
/**
* Returns the bounds which holds all the points in this polyline connection. Returns any
* previously existing bounds, else calculates by unioning all the children's dimensions.
*
* @return the bounds
*/
public Rectangle getBounds() {
if (bounds == null) {
super.getBounds();
for (int i = 0; i < getChildren().size(); i++) {
IFigure child = (IFigure) getChildren().get(i);
bounds.union(child.getBounds());
}
}
return bounds;
}
public void layout() {
Rectangle oldBounds = bounds;
super.layout();
bounds = null;
if (!getBounds().contains(oldBounds)) {
getParent().translateToParent(oldBounds);
getUpdateManager().addDirtyRegion(getParent(), oldBounds);
}
repaint();
fireFigureMoved();
}
public void setPoints(PointList points) {
super.setPoints(points);
layout(); // update arrows
}
static void refreshGrid() {
if (styleGrid != null) {
styleGrid.dispose();
shell.pack();
}
styleGrid = new Group(shell, SWT.NONE);
styleGrid.setText(xAxis.getName() + " vs. " + yAxis.getName());
styleGrid.setLayout(new GridLayout(xAxis.getCount() + 1, false));
styleGrid.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, true, true, 1, 1));
// put blank label in top left corner
Label label = new Label(styleGrid, SWT.NONE);
// add x-axis labels
for (int x = 0; x < xAxis.getCount(); x++) {
label = new Label(styleGrid, SWT.NONE);
label.setText(xAxis.getName() + " =\n" + xAxis.getAt(x).getName());
}
// iterate over the y-axis style settings
for (int y = 1; y < yAxis.getCount() + 1; y++) {
// add y-axis label for this row
label = new Label(styleGrid, SWT.NONE);
label.setText(yAxis.getName() + " =\n" + yAxis.getAt(y - 1).getName());
// iterate over the x-axis style settings
for (int x = 1; x < xAxis.getCount() + 1; x++) {
// create a sample shape instance
Shape shape;
if (sampleShape == Polyline.class) {
Polyline poly = new Polyline();
poly.addPoint(new Point(20, 20));
poly.addPoint(new Point(50, 80));
poly.addPoint(new Point(10, 50));
shape = poly;
} else {
try {
shape = (Shape) sampleShape.getConstructor(null).newInstance(null);
} catch (Exception e) {
throw new RuntimeException(
"Could not find a no args constructor for " + sampleShape.getName());
}
shape.setBounds(new Rectangle(0, 0, 100, 75));
}
// apply default style
shape.setBackgroundColor(ColorConstants.orange());
shape.setLineWidthFloat(defaultLineWidth);
shape.setAntialias(SWT.ON);
// apply styles imposed by each axis
xAxis.applyTo(shape, x - 1);
yAxis.applyTo(shape, y - 1);
FigureCanvas figureBox = new FigureCanvas(styleGrid);
figureBox.setContents(shape);
}
}
shell.pack();
}
