/**
* Gets a Rectangle from {@link #getBox()} and returns the Point where a line from the center of
* the Rectangle to the Point <i>reference</i> intersects the Rectangle.
*
* @param reference The reference point
* @return The anchor location
*/
public Point getLocation(Point reference) {
Rectangle r = Rectangle.SINGLETON;
r.setBounds(getBox());
r.translate(-1, -1);
r.resize(1, 1);
getOwner().translateToAbsolute(r);
float centerX = r.x + 0.5f * r.width;
float centerY = r.y + 0.5f * r.height;
if (r.isEmpty() || (reference.x == (int) centerX && reference.y == (int) centerY))
return new Point((int) centerX, (int) centerY); // This avoids divide-by-zero
float dx = reference.x - centerX;
float dy = reference.y - centerY;
// r.width, r.height, dx, and dy are guaranteed to be non-zero.
float scale = 0.5f / Math.max(Math.abs(dx) / r.width, Math.abs(dy) / r.height);
dx *= scale;
dy *= scale;
centerX += dx;
centerY += dy;
return new Point(Math.round(centerX), Math.round(centerY));
}
public void relocate(CellEditor celleditor) {
if (celleditor == null) return;
Text text = (Text) celleditor.getControl();
Rectangle rect = fig.getClientArea(Rectangle.SINGLETON);
if (fig instanceof Label) rect = ((Label) fig).getTextBounds().intersect(rect);
fig.translateToAbsolute(rect);
org.eclipse.swt.graphics.Rectangle trim = text.computeTrim(0, 0, 0, 0);
rect.translate(trim.x, trim.y);
rect.width += trim.width;
rect.height += trim.height;
text.setBounds(rect.x, rect.y, rect.width, rect.height);
}
