public SizeHandle(VertexView vertexview, GraphContext ctx) {
graph = ctx.getGraph();
vertex = vertexview;
editing = graph.getEditingCell() == vertex.getCell();
int sizeableAxis = GraphConstants.getSizeableAxis(vertex.getAllAttributes());
if (sizeableAxis == GraphConstants.X_AXIS) cursors = xCursors;
else if (sizeableAxis == GraphConstants.Y_AXIS) cursors = yCursors;
else cursors = defaultCursors;
// PortView Preview
portViews = ctx.createTemporaryPortViews();
initialBounds = (Rectangle2D) vertex.getBounds().clone();
context = ctx;
for (int i = 0; i < r.length; i++) r[i] = new Rectangle2D.Double();
invalidate();
}
protected Rectangle2D computeBounds(MouseEvent event) {
double left = initialBounds.getX();
double right = initialBounds.getX() + initialBounds.getWidth() - 1;
double top = initialBounds.getY();
double bottom = initialBounds.getY() + initialBounds.getHeight() - 1;
Point2D p = graph.fromScreen(graph.snap((Point2D) event.getPoint().clone()));
// Not into negative coordinates
p.setLocation(Math.max(0, p.getX()), Math.max(0, p.getY()));
// Bottom row
if (index > 4) bottom = p.getY();
// Top row
else if (index < 3) top = p.getY();
// Left col
if (index == 0 || index == 3 || index == 5) left = p.getX();
// Right col
else if (index == 2 || index == 4 || index == 7) right = p.getX();
double width = right - left;
double height = bottom - top;
if (isConstrainedSizeEvent(event)
|| GraphConstants.isConstrained(vertex.getAllAttributes())) {
if (index == 3 || index == 4 || index == 5) height = width;
else if (index == 1 || index == 6 || index == 2 || index == 7) width = height;
else {
height = width;
top = bottom - height;
}
}
if (width < 0) { // Flip over left side
left += width;
width = Math.abs(width);
}
if (height < 0) { // Flip over top side
top += height;
height = Math.abs(height);
}
return new Rectangle2D.Double(left, top, width + 1, height + 1);
}