/**
* Constructs a new {@link LayoutPoint} from the given event. The event must be from a {@link
* MouseListener} associated with the {@link LayoutCanvas} such that the {@link MouseEvent#x} and
* {@link MouseEvent#y} fields are relative to the canvas.
*
* @param canvas The {@link LayoutCanvas} this point is within.
* @param event The mouse event to construct the {@link LayoutPoint} from.
* @return A {@link LayoutPoint} which corresponds to the given {@link MouseEvent}.
*/
public static LayoutPoint create(LayoutCanvas canvas, MouseEvent event) {
// The mouse event coordinates should already be relative to the canvas
// widget.
assert event.widget == canvas : event.widget;
return ControlPoint.create(canvas, event).toLayout();
}
/**
* Constructs a new {@link LayoutPoint} from the given event. The event must be from a {@link
* DragSourceListener} associated with the {@link LayoutCanvas} such that the {@link
* DragSourceEvent#x} and {@link DragSourceEvent#y} fields are relative to the canvas.
*
* @param canvas The {@link LayoutCanvas} this point is within.
* @param event The mouse event to construct the {@link LayoutPoint} from.
* @return A {@link LayoutPoint} which corresponds to the given {@link DragSourceEvent}.
*/
public static LayoutPoint create(LayoutCanvas canvas, DragSourceEvent event) {
// The drag source event coordinates should already be relative to the
// canvas widget.
return ControlPoint.create(canvas, event).toLayout();
}
/**
* Returns the equivalent {@link ControlPoint} to this {@link LayoutPoint}.
*
* @return The equivalent {@link ControlPoint} to this {@link LayoutPoint}
*/
public ControlPoint toControl() {
int cx = mCanvas.getHorizontalTransform().translate(x);
int cy = mCanvas.getVerticalTransform().translate(y);
return ControlPoint.create(mCanvas, cx, cy);
}
