diff -r 000000000000 -r 9771028de303 linkobj.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/linkobj.cpp	Mon Jan 31 09:47:43 2005 +0000
@@ -0,0 +1,159 @@
+#include "linkobj.h"
+#include "branchobj.h"
+
+
+/////////////////////////////////////////////////////////////////
+// LinkObj
+/////////////////////////////////////////////////////////////////
+
+LinkObj::LinkObj ():MapObj() 
+{
+//	cout << "Const LinkObj ()\n";
+    init();
+}
+
+LinkObj::LinkObj (QCanvas* c):MapObj(c)
+{
+//	cout << "Const LinkObj (c)  called from MapCenterObj (c)\n";
+    init();
+}
+
+
+LinkObj::~LinkObj ()
+{
+//	cout << "Destr LinkObj\n";
+	if (linkState!=undefinedLink)
+		deactivate();
+	delete (line);
+}
+
+void LinkObj::init () 
+{
+	beginBranch=NULL;
+	endBranch=NULL;
+	linkState=undefinedLink;
+
+	line=new QCanvasLine (canvas);
+	line->setPoints (0,0,200,200);
+	line->setPen (QPen(QColor(200,200,200), 1));
+
+	setVisibility (false);
+}
+
+void LinkObj::copy (LinkObj* other)
+{
+	// FIXME copy not used yet
+	cout << "LO::copy called\n";
+	MapObj::copy (other);
+	setVisibility (other->visible);
+	beginBranch=other->beginBranch;
+	endBranch=other->endBranch;
+}
+
+void LinkObj::setBegin (BranchObj *bo)
+{
+	if (bo) 
+	{
+		linkState=initLink;
+		beginBranch=bo;
+		beginPos=beginBranch->getChildPos();
+	}	
+}
+
+void LinkObj::setEnd (BranchObj *bo)
+{
+	if (bo) 
+	{
+		linkState=initLink;
+		endBranch=bo;
+		endPos=endBranch->getChildPos();
+	}		
+}
+
+void LinkObj::setEnd (QPoint p)
+{
+	endPos=p;
+}
+
+bool LinkObj::activate ()
+{
+	if (beginBranch && endBranch)
+	{
+		linkState=activeLink;
+		beginBranch->addLink (this);
+		endBranch->addLink (this);
+		setVisibility (true);
+		return true;
+	} else
+		return false;
+}
+
+void LinkObj::deactivate ()
+{
+	if (beginBranch)
+		beginBranch->removeLink (this);
+	beginBranch=NULL;	
+	if (endBranch)
+		endBranch->removeLink (this);
+	endBranch=NULL;	
+	linkState=undefinedLink;
+
+	line->hide();
+}
+
+bool LinkObj::isUsed()
+{
+	if (beginBranch || endBranch || linkState!=undefinedLink)
+		return true;
+	else
+		return false;
+}
+
+void LinkObj::updateLink()
+{
+	QPoint a,b;
+	if (beginBranch)
+		// If a link is just drawed in the editor,
+		// we have already a beginBranch
+		a=beginBranch->getChildPos();
+	else
+		// This shouldn't be reached normally...
+		a=beginPos;
+	if (linkState==activeLink && endBranch)
+		b=endBranch->getChildPos();
+	else
+		b=endPos;
+	
+	if (line->startPoint()==a && line->endPoint()==b)
+		// update is called from both branches, so only
+		// update if needed
+		return;
+	else
+	{
+		beginPos=a;
+		endPos=b;
+		line->setPoints (a.x(), a.y(), b.x(), b.y());
+	}
+}
+
+void LinkObj::positionBBox()
+{
+}
+
+void LinkObj::calcBBoxSize()
+{
+}
+
+void LinkObj::setVisibility (bool b)
+{
+	MapObj::setVisibility (b);
+	if (b)
+	{
+		line->show();
+	}	
+	else
+	{
+		line->hide();
+	}	
+}
+