/** This is where the ghost image is drawn */
public void dragOver(final DropTargetDragEvent e) {
if ((e == null)
|| (_raGhost == null)
|| (_ptLast == null)
|| (_ptOffset == null)
|| (_imgGhost == null)
|| (_raCueLine == null)) return;
// Even if the mouse is not moving, this method is still invoked 10 times per second
final Point pt = e.getLocation();
if (pt == null) return;
if (pt.equals(_ptLast)) return;
// Try to determine whether the user is flicking the cursor right or left
final int nDeltaLeftRight = pt.x - _ptLast.x;
if (((_nLeftRight > 0) && (nDeltaLeftRight < 0))
|| ((_nLeftRight < 0) && (nDeltaLeftRight > 0))) _nLeftRight = 0;
_nLeftRight += nDeltaLeftRight;
_ptLast = pt;
final Graphics2D g2 = (Graphics2D) getGraphics();
if (g2 == null) return;
// If a drag image is not supported by the platform, then draw my own drag image
if (!DragSource.isDragImageSupported()) {
JDragTree.this.paintImmediately(
_raGhost.getBounds()); // Rub out the last ghost image and cue line
// And remember where we are about to draw the new ghost image
_raGhost.setRect(
pt.x - _ptOffset.x, pt.y - _ptOffset.y, _imgGhost.getWidth(), _imgGhost.getHeight());
g2.drawImage(
_imgGhost,
AffineTransform.getTranslateInstance(_raGhost.getX(), _raGhost.getY()),
null);
} else // Just rub out the last cue line
JDragTree.this.paintImmediately(_raCueLine.getBounds());
final TreePath path = getClosestPathForLocation(pt.x, pt.y);
if (!(path == _pathLast)) {
_nLeftRight = 0; // We've moved up or down, so reset left/right movement trend
_pathLast = path;
_timerHover.restart();
}
// In any case draw (over the ghost image if necessary) a cue line indicating where a drop
// will occur
final Rectangle raPath = getPathBounds(path);
_raCueLine.setRect(0, raPath.y + (int) raPath.getHeight(), getWidth(), 2);
g2.setColor(_colorCueLine);
g2.fill(_raCueLine);
// And include the cue line in the area to be rubbed out next time
_raGhost = _raGhost.createUnion(_raCueLine);
// Do this if you want to prohibit dropping onto the drag source
if (path.equals(_pathSource)) e.rejectDrag();
else e.acceptDrag(e.getDropAction());
}
public Rectangle2D getBoundingBox() {
if (worldGeometry != null) return (Rectangle2D) worldGeometry.clone();
Rectangle2D bbox = null;
for (Surface child : children) {
if (bbox == null) bbox = child.getBoundingBox();
else bbox = bbox.createUnion(child.getBoundingBox());
}
return bbox;
}
/**
* Receives notification of a change to a GraphicsNode.
*
* @param gnce The event object describing the GraphicsNode change.
*/
public void changeStarted(GraphicsNodeChangeEvent gnce) {
// System.out.println("A node has changed for: " + this);
GraphicsNode gn = gnce.getGraphicsNode();
WeakReference gnWRef = gn.getWeakReference();
boolean doPut = false;
if (dirtyNodes == null) {
dirtyNodes = new HashMap();
doPut = true;
} else if (!dirtyNodes.containsKey(gnWRef)) doPut = true;
if (doPut) {
AffineTransform at = gn.getTransform();
if (at != null) at = (AffineTransform) at.clone();
else at = new AffineTransform();
dirtyNodes.put(gnWRef, at);
}
GraphicsNode chngSrc = gnce.getChangeSrc();
Rectangle2D rgn = null;
if (chngSrc != null) {
// A child node is moving in the tree so assign it's dirty
// regions to this node before it moves.
Rectangle2D drgn = getNodeDirtyRegion(chngSrc);
if (drgn != null) rgn = new ChngSrcRect(drgn);
} else {
// Otherwise just use gn's current region.
rgn = gn.getBounds();
}
// Add this dirty region to any existing dirty region.
Rectangle2D r2d = (Rectangle2D) fromBounds.remove(gnWRef);
if (rgn != null) {
if ((r2d != null) && (r2d != NULL_RECT)) {
// System.err.println("GN: " + gn);
// System.err.println("R2d: " + r2d);
// System.err.println("Rgn: " + rgn);
r2d = r2d.createUnion(rgn);
// System.err.println("Union: " + r2d);
} else r2d = rgn;
}
// if ((gn instanceof CompositeGraphicsNode) &&
// (r2d.getWidth() > 200)) {
// new Exception("Adding Large: " + gn).printStackTrace();
// }
// Store the bounds for the future.
if (r2d == null) r2d = NULL_RECT;
fromBounds.put(gnWRef, r2d);
}
/**
* Performs the layout with no constraint, so the content size is determined by the bounds of the
* shape and/or line drawn to represent the series.
*
* @param g2 the graphics device.
* @return The content size.
*/
protected ArrangeResult arrangeNN(Graphics2D g2, ArrangeParams params) {
Rectangle2D contentSize = new Rectangle2D.Double();
if (this.line != null) {
contentSize.setRect(this.line.getBounds2D());
}
if (this.shape != null) {
contentSize = contentSize.createUnion(this.shape.getBounds2D());
}
ArrangeResult result = params.getRecyclableResult();
if (result != null) {
result.setSize(contentSize.getWidth(), contentSize.getHeight());
} else {
result = new ArrangeResult(contentSize.getWidth(), contentSize.getHeight(), null);
}
return result;
}
/** Synchronizes bounding box with the model ; */
protected void syncBounds() {
PicText te = (PicText) element;
// [pending] Il faut tenir compte de la rotation !
Rectangle2D latexBB =
null; // BB relative to latex dimensions (including rotation) (without frame)
Rectangle2D textLayoutBB =
null; // BB relative to textLayout dimensions (including rotation) (without frame)
Rectangle2D textBB = null; // BB of the text (including rotation), without frame
if (areDimensionsComputed) { // compute latexBB
Rectangle2D nonRotated =
new Rectangle2D.Double(
te.getLeftX(), te.getBottomY(), te.getWidth(), te.getHeight() + te.getDepth());
AffineTransform tr =
new AffineTransform(); // maps Image coordinates to Model coordinates (see paint)
tr.setToIdentity(); // reset
PicPoint anchor = te.getCtrlPt(TextEditable.P_ANCHOR, ptBuf);
tr.rotate(getRotation(), anchor.x, anchor.y); // rotate along P_ANCHOR !
latexBB = tr.createTransformedShape(nonRotated).getBounds2D();
}
if (image == null) { // compute textLayoutBB
Rectangle2D nonRotated = textLayout.getBounds();
textLayoutBB = text2ModelTr.createTransformedShape(nonRotated).getBounds2D();
}
// use textLayoutBB or latexBB or their union
if (image != null) textBB = latexBB;
else {
if (!areDimensionsComputed) textBB = textLayoutBB;
else {
textBB = latexBB.createUnion(textLayoutBB);
}
}
// union with frame BB
if (te.isFramed()) {
super.syncBounds(); // update bounds of the frame if necessary
Rectangle2D.union(super.bounds, textBB, this.bounds);
} else this.bounds = textBB;
}
protected ArrangeResult arrangeFF(
Graphics2D g2, double fixedWidth, double fixedHeight, ArrangeParams params) {
Rectangle2D contentSize = new Rectangle2D.Double();
if (this.line != null) {
contentSize.setRect(this.line.getBounds2D());
}
if (this.shape != null) {
contentSize = contentSize.createUnion(this.shape.getBounds2D());
}
// TODO: compare the contentSize to the required fixed size
// and possibly log the problems
ArrangeResult result = params.getRecyclableResult();
if (result != null) {
result.setSize(fixedWidth, fixedHeight);
} else {
result = new ArrangeResult(fixedWidth, fixedHeight, null);
}
return result;
}
/**
* This returns the dirty region for gn in the coordinate system given by <code>at</code>.
*
* @param gn Node tree to return dirty region for.
* @param at Affine transform to coordinate space to accumulate dirty regions in.
*/
public Rectangle2D getNodeDirtyRegion(GraphicsNode gn, AffineTransform at) {
WeakReference gnWRef = gn.getWeakReference();
AffineTransform nat = (AffineTransform) dirtyNodes.get(gnWRef);
if (nat == null) nat = gn.getTransform();
if (nat != null) {
at = new AffineTransform(at);
at.concatenate(nat);
}
Filter f = gn.getFilter();
Rectangle2D ret = null;
if (gn instanceof CompositeGraphicsNode) {
CompositeGraphicsNode cgn = (CompositeGraphicsNode) gn;
Iterator iter = cgn.iterator();
while (iter.hasNext()) {
GraphicsNode childGN = (GraphicsNode) iter.next();
Rectangle2D r2d = getNodeDirtyRegion(childGN, at);
if (r2d != null) {
if (f != null) {
// If we have a filter and a change region
// Update our full filter extents.
Shape s = at.createTransformedShape(f.getBounds2D());
ret = s.getBounds2D();
break;
}
if ((ret == null) || (ret == NULL_RECT)) ret = r2d;
else ret = ret.createUnion(r2d);
}
}
} else {
ret = (Rectangle2D) fromBounds.remove(gnWRef);
if (ret == null) {
if (f != null) ret = f.getBounds2D();
else ret = gn.getBounds();
} else if (ret == NULL_RECT) ret = null;
if (ret != null) ret = at.createTransformedShape(ret).getBounds2D();
}
return ret;
}
private Rectangle2D addClipAreas(Rectangle2D c1, Rectangle2D c2) {
if (c1 == null) return c2;
if (c2 == null) return c1;
return c1.createUnion(c2);
}
