public Node NodeAtPoint(Point p, CaretLocation result)
{
NodesList list = GetChildrenNodes();
for (Node n = list.Next(); n != null; n = list.Next())
{
if (n.GetCaretPos(p) != CaretPosition.None)
{
return(n.NodeAtPoint(p, result));
}
}
result.pos = GetCaretPos(p);
if (result.pos == CaretPosition.None)
{
return(null);
}
return(this);
}
public Node NodeAtPoint(Point p, CaretLocation result)
{
NodesList list = GetChildrenNodes();
for (Node n = list.Next(); n != null; n = list.Next())
{
if (n.GetCaretPos(p) != CaretPosition.None)
{
return n.NodeAtPoint(p, result);
}
}
result.pos = GetCaretPos(p);
if (result.pos == CaretPosition.None)
{
return null;
}
return this;
}
//
private Node ChildNodeFromPoint (Node Parent_Node, int x, int y, CaretLocation result)
{
Node node = null;
try
{
bool done = false;
int i = 0;
NodesList childrenNodes = null;
childrenNodes = Parent_Node.GetChildrenNodes ();
int count = 0;
if (childrenNodes == null)
{
return node;
}
count = childrenNodes.Count;
while (!done && (i < count))
{
Node child = null;
child = childrenNodes.Get (i);
if ((child != null) && child.isVisible)
{
if ((x >= child.box.X) && (x <= (child.box.X + (child.box.Width / 2))))
{
node = child;
result.pos = CaretPosition.Left;
done = true;
}
else if ((x >= (child.box.X + (child.box.Width / 2))) && (x <= (child.box.X + child.box.Width)))
{
node = child;
result.pos = CaretPosition.Right;
done = true;
}
}
i++;
}
if ((!done && (Parent_Node.lastChild != null)) && Parent_Node.lastChild.isVisible)
{
node = Parent_Node.lastChild;
}
}
catch
{
}
return node;
}
//
public bool SelectionTo (int x, int y)
{
try
{
Node mcell;
Node lastSelected = this.MultiSelectNode();
Point point = new Point(x, y);
CaretLocation location = new CaretLocation();
try
{
if (this.rootNode_ != null)
{
if (point.X < 0)
{
point.X = 0;
}
if (point.Y < 0)
{
point.Y = 0;
}
if (point.X > (this.rootNode_.box.X + this.rootNode_.box.Width))
{
point.X = (this.rootNode_.box.X + this.rootNode_.box.Width) - 1;
}
if (point.Y > (this.rootNode_.box.Y + this.rootNode_.box.Height))
{
point.Y = (this.rootNode_.box.Y + this.rootNode_.box.Height) - 1;
}
}
}
catch
{
}
Node nodeatPoint = this.rootNode_.NodeAtPoint(point, location);
if (((nodeatPoint.type_.type == ElementType.Entity) && (nodeatPoint.parent_ != null)) &&
((nodeatPoint.parent_.type_.type == ElementType.Mi) ||
(nodeatPoint.parent_.type_.type == ElementType.Mo)))
{
nodeatPoint = nodeatPoint.parent_;
}
if ((nodeatPoint == null) || (lastSelected == null))
{
return false;
}
if (nodeatPoint.level == 0)
{
return false;
}
if (((nodeatPoint.level == 1)) &&
((nodeatPoint.type_.type == ElementType.Mtable) && (nodeatPoint.Class == "nugentoplevel")))
{
return false;
}
if (this.IsToplevelRowCell(this.multiSelectNode))
{
bool top = false;
if ((nodeatPoint.level == 2) && (nodeatPoint.type_.type == ElementType.Mtr))
{
if ((nodeatPoint.firstChild != null) && (nodeatPoint.firstChild.type_.type == ElementType.Mtd))
{
Node cell = nodeatPoint.firstChild;
Node target = this.ChildNodeFromPoint(cell, x, y, location);
if (target != null)
{
nodeatPoint = target;
}
else
{
return false;
}
}
else
{
return false;
}
}
else if ((nodeatPoint.level == 3) && (nodeatPoint.type_.type == ElementType.Mtd))
{
Node cell = nodeatPoint;
Node target = this.ChildNodeFromPoint(cell, point.X, point.Y, location);
if (target != null)
{
nodeatPoint = target;
}
else
{
return false;
}
}
mcell = nodeatPoint;
if (mcell.level > 4)
{
while (mcell.level > 4)
{
mcell = mcell.parent_;
}
}
if ((((mcell.level == 4) && mcell.isVisible) &&
((mcell.level == this.multiSelectNode.level) && this.IsToplevelRowCell(mcell))) &&
(mcell.parent_ != this.multiSelectNode.parent_))
{
top = true;
nodeatPoint = mcell;
}
if (top)
{
try
{
bool atom = false;
if ((nodeatPoint.IsAtom() && (nodeatPoint.literalText != null)) &&
(nodeatPoint.literalText.Length > 1))
{
if (point.X > (nodeatPoint.box.X + nodeatPoint.box.Width))
{
this.SelectNode(nodeatPoint, true);
}
else
{
this.SelectNode(nodeatPoint, false);
this.selectedNode.MarkFromPoint(point);
this.selectedNode.LiteralStart = this.selectedNode.LiteralStart;
}
atom = true;
}
else
{
if (location.pos == CaretPosition.Right)
{
if ((nodeatPoint.nextSibling != null) && nodeatPoint.nextSibling.isVisible)
{
this.SelectNode(nodeatPoint.nextSibling, false);
}
else
{
this.SelectNode(nodeatPoint, true);
}
}
else
{
this.SelectNode(nodeatPoint, false);
}
atom = true;
}
if (!atom)
{
return false;
}
return true;
}
catch
{
}
return false;
}
}
if (((nodeatPoint.parent_ == null) || (lastSelected.parent_ == null)) || (lastSelected.parent_ != nodeatPoint.parent_))
{
Node n = nodeatPoint;
while ((n.parent_ != null) && (n.parent_ != lastSelected.parent_))
{
n = n.parent_;
}
if ((n.parent_ == lastSelected.parent_) && n.isVisible)
{
nodeatPoint = n;
if ((point.X >= (nodeatPoint.box.X + (nodeatPoint.box.Width/2))) &&
(point.X <= (nodeatPoint.box.X + nodeatPoint.box.Width)))
{
location.pos = CaretPosition.Right;
}
else
{
location.pos = CaretPosition.Left;
}
}
}
if (((nodeatPoint.parent_ != null) && (lastSelected.parent_ != null)) && (lastSelected.parent_ == nodeatPoint.parent_))
{
if ((nodeatPoint.parent_.type_.minChilds > 1) && (nodeatPoint != lastSelected))
{
return false;
}
if (!nodeatPoint.isVisible)
{
return false;
}
if ((nodeatPoint.IsAtom() && (nodeatPoint.literalText != null)) && (nodeatPoint.literalText.Length > 1))
{
this.SelectNode(nodeatPoint, false);
this.selectedNode.MarkFromPoint(point);
return true;
}
if (location.pos == CaretPosition.Right)
{
if (nodeatPoint.nextSibling != null)
{
this.SelectNode(nodeatPoint, false);
return this.SelectionRight();
}
this.SelectNode(nodeatPoint, true);
return true;
}
this.SelectNode(nodeatPoint, false);
return true;
}
return false;
}
catch
{
}
return false;
}
//
public bool SelectNode (int x, int y)
{
this.HasSelection = false;
Node foundNode = null;
try
{
Point point = new Point (x, y);
CaretLocation caretLocation = new CaretLocation ();
try
{
if (this.rootNode_ != null)
{
if (point.X < 0)
{
point.X = 0;
}
if (point.Y < 0)
{
point.Y = 0;
}
if (point.X > (this.rootNode_.box.X + this.rootNode_.box.Width))
{
point.X = (this.rootNode_.box.X + this.rootNode_.box.Width) - 1;
}
if (point.Y > (this.rootNode_.box.Y + this.rootNode_.box.Height))
{
point.Y = (this.rootNode_.box.Y + this.rootNode_.box.Height) - 1;
}
}
}
catch
{
}
foundNode = this.rootNode_.NodeAtPoint (point, caretLocation);
if ((foundNode == null) || !foundNode.isVisible)
{
return false;
}
if (((foundNode.type_.type == ElementType.Entity) && (foundNode.parent_ != null)) &&
((foundNode.parent_.type_.type == ElementType.Mi) ||
(foundNode.parent_.type_.type == ElementType.Mo)))
{
foundNode = foundNode.parent_;
}
if ((foundNode.level == 0))
{
return false;
}
if (((foundNode.level == 1)) &&
((foundNode.type_.type == ElementType.Mtable) && (foundNode.Class == "nugentoplevel")))
{
return false;
}
if (foundNode.skip)
{
try
{
if ((foundNode.type_.type == ElementType.Mrow) && (foundNode.firstChild == null))
{
if (caretLocation.pos == CaretPosition.Right)
{
this.SelectNode (foundNode, true);
}
else
{
this.SelectNode (foundNode, false);
}
return true;
}
if (foundNode.type_.type == ElementType.Mtr)
{
if ((foundNode.firstChild != null) &&
(foundNode.firstChild.type_.type == ElementType.Mtd))
{
Node child = this.ChildNodeFromPoint (foundNode, point.X, point.Y, caretLocation);
if ((child != null) && (child.firstChild != null))
{
Node target = this.ChildNodeFromPoint (child, point.X, point.Y, caretLocation);
if (target != null)
{
if (caretLocation.pos == CaretPosition.Right)
{
if ((target.nextSibling != null) && target.nextSibling.isVisible)
{
this.SelectNode (target.nextSibling, false);
return true;
}
this.SelectNode (target, true);
return true;
}
this.SelectNode (target, false);
return true;
}
}
}
return false;
}
if (foundNode.type_.type == ElementType.Mtd)
{
if ((foundNode.firstChild != null) && foundNode.firstChild.isVisible)
{
Node cell = foundNode;
if ((cell != null) && (cell.firstChild != null))
{
Node target = this.ChildNodeFromPoint (cell, point.X, point.Y, caretLocation);
if (target != null)
{
if (caretLocation.pos == CaretPosition.Right)
{
if ((target.nextSibling != null) && target.nextSibling.isVisible)
{
this.SelectNode (target.nextSibling, false);
return true;
}
this.SelectNode (target, true);
return true;
}
this.SelectNode (target, false);
return true;
}
}
}
return false;
}
}
catch
{
}
if ((foundNode.level == 0))
{
return false;
}
this.SelectNode (foundNode, false);
return this.GoRight ();
}
if (foundNode.isGlyph)
{
if ((foundNode.level == 0))
{
return false;
}
this.SelectNode (foundNode, false);
return this.GoLeft ();
}
if ((foundNode.IsAtom() && (foundNode.literalText != null)) && (foundNode.literalText.Length > 1))
{
this.SelectNode (foundNode, false);
this.selectedNode.MarkFromPoint (point);
this.selectedNode.LiteralStart = this.selectedNode.LiteralStart;
return true;
}
if (caretLocation.pos == CaretPosition.Right)
{
if ((foundNode.level == 0))
{
return false;
}
if (foundNode.nextSibling != null)
{
this.SelectNode (foundNode, false);
return this.GoRight ();
}
this.SelectNode (foundNode, true);
}
else
{
if ((foundNode.level == 0))
{
return false;
}
this.SelectNode (foundNode, false);
}
return true;
}
catch
{
}
return false;
}
