insilmaril@86: #include "linkobj.h"
insilmaril@86: #include "branchobj.h"
insilmaril@86: 
insilmaril@86: 
insilmaril@86: /////////////////////////////////////////////////////////////////
insilmaril@86: // LinkObj
insilmaril@86: /////////////////////////////////////////////////////////////////
insilmaril@86: 
insilmaril@86: LinkObj::LinkObj ():MapObj() 
insilmaril@86: {
insilmaril@94: 	//	cout << "Const LinkObj ()\n";
insilmaril@94: 	init();
insilmaril@86: }
insilmaril@86: 
insilmaril@86: LinkObj::LinkObj (QCanvas* c):MapObj(c)
insilmaril@86: {
insilmaril@94: 	//	cout << "Const LinkObj (c)  called from MapCenterObj (c)\n";
insilmaril@94: 	init();
insilmaril@86: }
insilmaril@86: 
insilmaril@86: 
insilmaril@86: LinkObj::~LinkObj ()
insilmaril@86: {
insilmaril@94: 	//	cout << "Destr LinkObj\n";
insilmaril@86: 	if (linkState!=undefinedLink)
insilmaril@86: 		deactivate();
insilmaril@86: 	delete (line);
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::init () 
insilmaril@86: {
insilmaril@86: 	beginBranch=NULL;
insilmaril@86: 	endBranch=NULL;
insilmaril@94: 	visBranch=NULL;
insilmaril@86: 	linkState=undefinedLink;
insilmaril@86: 
insilmaril@86: 	line=new QCanvasLine (canvas);
insilmaril@86: 	line->setPoints (0,0,200,200);
insilmaril@86: 	line->setPen (QPen(QColor(200,200,200), 1));
insilmaril@86: 
insilmaril@86: 	setVisibility (false);
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::copy (LinkObj* other)
insilmaril@86: {
insilmaril@86: 	// FIXME copy not used yet
insilmaril@86: 	cout << "LO::copy called\n";
insilmaril@86: 	MapObj::copy (other);
insilmaril@86: 	setVisibility (other->visible);
insilmaril@86: 	beginBranch=other->beginBranch;
insilmaril@86: 	endBranch=other->endBranch;
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::setBegin (BranchObj *bo)
insilmaril@86: {
insilmaril@86: 	if (bo) 
insilmaril@86: 	{
insilmaril@86: 		linkState=initLink;
insilmaril@86: 		beginBranch=bo;
insilmaril@86: 		beginPos=beginBranch->getChildPos();
insilmaril@86: 	}	
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::setEnd (BranchObj *bo)
insilmaril@86: {
insilmaril@86: 	if (bo) 
insilmaril@86: 	{
insilmaril@86: 		linkState=initLink;
insilmaril@86: 		endBranch=bo;
insilmaril@86: 		endPos=endBranch->getChildPos();
insilmaril@86: 	}		
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::setEnd (QPoint p)
insilmaril@86: {
insilmaril@86: 	endPos=p;
insilmaril@86: }
insilmaril@86: 
insilmaril@86: bool LinkObj::activate ()
insilmaril@86: {
insilmaril@86: 	if (beginBranch && endBranch)
insilmaril@86: 	{
insilmaril@86: 		linkState=activeLink;
insilmaril@86: 		beginBranch->addLink (this);
insilmaril@86: 		endBranch->addLink (this);
insilmaril@86: 		setVisibility (true);
insilmaril@86: 		return true;
insilmaril@86: 	} else
insilmaril@86: 		return false;
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::deactivate ()
insilmaril@86: {
insilmaril@86: 	if (beginBranch)
insilmaril@94: 		beginBranch->removeLinkRef (this);
insilmaril@86: 	beginBranch=NULL;	
insilmaril@86: 	if (endBranch)
insilmaril@94: 		endBranch->removeLinkRef (this);
insilmaril@86: 	endBranch=NULL;	
insilmaril@94: 	visBranch=NULL;
insilmaril@86: 	linkState=undefinedLink;
insilmaril@86: 
insilmaril@86: 	line->hide();
insilmaril@86: }
insilmaril@86: 
insilmaril@86: bool LinkObj::isUsed()
insilmaril@86: {
insilmaril@86: 	if (beginBranch || endBranch || linkState!=undefinedLink)
insilmaril@86: 		return true;
insilmaril@86: 	else
insilmaril@86: 		return false;
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::updateLink()
insilmaril@86: {
insilmaril@86: 	QPoint a,b;
insilmaril@94: 	if (visBranch)
insilmaril@94: 	{
insilmaril@94: 		// Only one of the linked branches is visible
insilmaril@94: 		a=b=visBranch->getChildPos();
insilmaril@94: 		if (visBranch->getOrientation()==OrientRightOfCenter)
insilmaril@94: 			b.setX (b.x()+25);
insilmaril@94: 		else
insilmaril@94: 			b.setX (b.x()-25);
insilmaril@94: 	} else
insilmaril@94: 	{
insilmaril@94: 		// Both linked branches are visible
insilmaril@94: 		if (beginBranch)
insilmaril@94: 			// If a link is just drawn in the editor,
insilmaril@94: 			// we have already a beginBranch
insilmaril@94: 			a=beginBranch->getChildPos();
insilmaril@94: 		else
insilmaril@94: 			// This shouldn't be reached normally...
insilmaril@94: 			a=beginPos;
insilmaril@94: 		if (linkState==activeLink && endBranch)
insilmaril@94: 			b=endBranch->getChildPos();
insilmaril@94: 		else
insilmaril@94: 			b=endPos;
insilmaril@94: 	}
insilmaril@94: 
insilmaril@94: 
insilmaril@94: 	if (line->startPoint()==a && line->endPoint()==b && !visBranch)
insilmaril@94: 	{
insilmaril@86: 		// update is called from both branches, so only
insilmaril@86: 		// update if needed
insilmaril@94: 		cout <<"LO__updateL  returnung...\n";
insilmaril@86: 		return;
insilmaril@94: 	}	
insilmaril@86: 	else
insilmaril@86: 	{
insilmaril@86: 		beginPos=a;
insilmaril@86: 		endPos=b;
insilmaril@86: 		line->setPoints (a.x(), a.y(), b.x(), b.y());
insilmaril@86: 	}
insilmaril@86: }
insilmaril@86: 
insilmaril@89: BranchObj* LinkObj::otherBranch(BranchObj* thisBranch)
insilmaril@89: {
insilmaril@89: 	if (!beginBranch && !endBranch)
insilmaril@89: 		return NULL;
insilmaril@89: 	if (thisBranch==beginBranch)
insilmaril@89: 		return endBranch;
insilmaril@89: 	else	
insilmaril@89: 		return beginBranch;
insilmaril@89: }
insilmaril@89: 
insilmaril@86: void LinkObj::positionBBox()
insilmaril@86: {
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::calcBBoxSize()
insilmaril@86: {
insilmaril@86: }
insilmaril@86: 
insilmaril@86: void LinkObj::setVisibility (bool b)
insilmaril@86: {
insilmaril@86: 	MapObj::setVisibility (b);
insilmaril@86: 	if (b)
insilmaril@86: 	{
insilmaril@86: 		line->show();
insilmaril@86: 	}	
insilmaril@86: 	else
insilmaril@86: 	{
insilmaril@86: 		line->hide();
insilmaril@86: 	}	
insilmaril@86: }
insilmaril@86: 
insilmaril@94: void LinkObj::setVisibility ()
insilmaril@94: {
insilmaril@94: 	if (beginBranch && endBranch)
insilmaril@94: 	{
insilmaril@94: 		if(beginBranch->isVisibleObj() && endBranch->isVisibleObj())
insilmaril@94: 		{	// Both ends are visible
insilmaril@94: 			setVisibility (true);
insilmaril@94: 			visBranch=NULL;
insilmaril@94: 		} else
insilmaril@94: 		{
insilmaril@94: 			if(!beginBranch->isVisibleObj() && !endBranch->isVisibleObj())
insilmaril@94: 			{	//None of the ends is visible
insilmaril@94: 				setVisibility (false);
insilmaril@94: 				visBranch=NULL;
insilmaril@94: 			} else
insilmaril@94: 			{	// Just one end is visible, draw a symbol that shows
insilmaril@94: 				// that there is a link to a scrolled branch
insilmaril@94: 				setVisibility (true);
insilmaril@94: 				if (beginBranch->isVisibleObj())
insilmaril@94: 					visBranch=beginBranch;
insilmaril@94: 				else
insilmaril@94: 					visBranch=endBranch;
insilmaril@94: 					
insilmaril@94: 			}
insilmaril@94: 		}
insilmaril@94: 	}
insilmaril@94: }
insilmaril@94: