private void onMouseUp(MouseEvent e) {
if (hasMotionListener()) {
changeSelectedPoint(e.getX(), e.getY());
removeMotionListener();
}
updateAll();
}
private void onMouseDrag(MouseEvent e) {
changeSelectedPoint(e.getX(), e.getY());
updateAll();
}
private void onMouseDown(MouseEvent e) {
if (_tile != getTile(e)) return;
// Remember mouse down location.
int x = _xdown = e.getX();
int y = _ydown = e.getY();
// What segment and point, if any, was clicked?
int[] i = {0, 0}, p = {0, 0};
int icode = getSegmentAndPoint(x, y, i, p);
int is = i[0], ip = i[1];
int xp = p[0], yp = p[1];
// trace("onMouseDown: is="+is+" ip="+ip);
// If currently in the process of creating a new segment, ...
if (_creating) {
// If mouse is on previous (selected) point in the created segment,
// then end segment creation.
if (icode == 1 && isSelected(is, ip)) {
_creating = false;
}
// Else append a new point to the created segment.
else {
is = _isSelected;
ip = appendPoint(x, y);
selectPoint(is, ip);
addMotionListener();
}
}
// Else if not currently in the process of creating a new segment, ...
else {
// If mouse on existing point, ...
if (icode == 1) {
// If alt key down, delete the point.
if (e.isAltDown()) {
selectPoint(is, ip);
removeSelectedPoint();
}
// Else, select the point
else {
selectPoint(is, ip);
addMotionListener();
}
}
// Else if mouse on existing segment, ...
else if (icode == 2) {
// If shift key down, add a new point to existing segment.
if (e.isShiftDown()) {
insertPoint(is, ip, x, y);
selectPoint(is, ip);
addMotionListener();
}
}
// Else if mouse down away from all segments, ...
else {
// If shift key down, create a new segment.
if (e.isShiftDown()) {
is = appendSegment(x, y);
ip = 0;
selectPoint(is, ip);
addMotionListener();
_creating = true;
}
// Else deselect all points.
else {
deselect();
}
}
}
updateAll();
}