insilmaril@2: #include "xlinkobj.h"
insilmaril@2: #include "branchobj.h"
insilmaril@2: #include "mapeditor.h"
insilmaril@2: //Added by qt3to4:
insilmaril@2: #include <Q3PointArray>
insilmaril@2: 
insilmaril@2: 
insilmaril@2: /////////////////////////////////////////////////////////////////
insilmaril@2: // XLinkObj
insilmaril@2: /////////////////////////////////////////////////////////////////
insilmaril@2: 
insilmaril@2: int XLinkObj::arrowSize=10;						// make instances 
insilmaril@2: 
insilmaril@2: XLinkObj::XLinkObj ():MapObj() 
insilmaril@2: {
insilmaril@2: 	//	cout << "Const XLinkObj ()\n";
insilmaril@2: 	init();
insilmaril@2: }
insilmaril@2: 
insilmaril@2: XLinkObj::XLinkObj (Q3Canvas* c):MapObj(c)
insilmaril@2: {
insilmaril@2: 	//	cout << "Const XLinkObj (c)  called from MapCenterObj (c)\n";
insilmaril@2: 	init();
insilmaril@2: }
insilmaril@2: 
insilmaril@2: 
insilmaril@2: XLinkObj::~XLinkObj ()
insilmaril@2: {
insilmaril@2: 	//	cout << "Destr XLinkObj\n";
insilmaril@2: 	if (xLinkState!=undefinedXLink)
insilmaril@2: 		deactivate();
insilmaril@2: 	delete (line);
insilmaril@2: 	delete (poly);
insilmaril@2: }
insilmaril@2: 
insilmaril@2: 
insilmaril@2: void XLinkObj::init () 
insilmaril@2: {
insilmaril@2: 	beginBranch=NULL;
insilmaril@2: 	endBranch=NULL;
insilmaril@2: 	visBranch=NULL;
insilmaril@2: 	xLinkState=undefinedXLink;
insilmaril@2: 
insilmaril@2: 	color=QColor (180,180,180);
insilmaril@2: 	line=new Q3CanvasLine (canvas);
insilmaril@2: 	width=1;
insilmaril@2: 	line->setPen (QPen(color, width));
insilmaril@2: 	line->setZ (Z_XLINK);
insilmaril@2: 
insilmaril@2: 	poly=new Q3CanvasPolygon (canvas);
insilmaril@2: 	poly->setBrush( color );
insilmaril@2: 	poly->setZ (Z_XLINK);
insilmaril@2: 
insilmaril@2: 	setVisibility (false);
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::copy (XLinkObj* other)
insilmaril@2: {
insilmaril@2: 	// TODO copy not used yet
insilmaril@2: 	MapObj::copy (other);
insilmaril@2: 	setVisibility (other->visible);
insilmaril@2: 	beginBranch=other->beginBranch;
insilmaril@2: 	endBranch=other->endBranch;
insilmaril@2: 	width=other->width;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setBegin (BranchObj *bo)
insilmaril@2: {
insilmaril@2: 	if (bo) 
insilmaril@2: 	{
insilmaril@2: 		xLinkState=initXLink;
insilmaril@2: 		beginBranch=bo;
insilmaril@2: 		beginPos=beginBranch->getChildPos();
insilmaril@2: 	}	
insilmaril@2: }
insilmaril@2: 
insilmaril@2: BranchObj* XLinkObj::getBegin ()
insilmaril@2: {
insilmaril@2: 	return beginBranch;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setEnd (BranchObj *bo)
insilmaril@2: {
insilmaril@2: 	if (bo) 
insilmaril@2: 	{
insilmaril@2: 		xLinkState=initXLink;
insilmaril@2: 		endBranch=bo;
insilmaril@2: 		endPos=endBranch->getChildPos();
insilmaril@2: 	}		
insilmaril@2: }
insilmaril@2: 
insilmaril@2: BranchObj* XLinkObj::getEnd()
insilmaril@2: {
insilmaril@2: 	return endBranch;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setWidth (int w)
insilmaril@2: {
insilmaril@2: 	width=w;
insilmaril@2: 	setColor (color);
insilmaril@2: }
insilmaril@2: 
insilmaril@2: int XLinkObj::getWidth()
insilmaril@2: {
insilmaril@2: 	return width;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setColor(QColor c)
insilmaril@2: {
insilmaril@2: 	color=c;
insilmaril@2: 	line->setPen (QPen(color, width));
insilmaril@2: 	poly->setBrush( color );
insilmaril@2: }
insilmaril@2: 
insilmaril@2: QColor XLinkObj::getColor()
insilmaril@2: {
insilmaril@2: 	return color;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setEnd (QPoint p)
insilmaril@2: {
insilmaril@2: 	endPos=p;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: bool XLinkObj::activate ()
insilmaril@2: {
insilmaril@2: 	if (beginBranch && endBranch)
insilmaril@2: 	{
insilmaril@2: 		if (beginBranch==endBranch) return false;
insilmaril@2: 		xLinkState=activeXLink;
insilmaril@2: 		beginBranch->addXLink (this);
insilmaril@2: 		endBranch->addXLink (this);
insilmaril@2: 		setVisibility ();
insilmaril@2: 		return true;
insilmaril@2: 	} else
insilmaril@2: 		return false;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::deactivate ()
insilmaril@2: {
insilmaril@2: 	if (beginBranch)
insilmaril@2: 		beginBranch->removeXLinkRef (this);
insilmaril@2: 	beginBranch=NULL;	
insilmaril@2: 	if (endBranch)
insilmaril@2: 		endBranch->removeXLinkRef (this);
insilmaril@2: 	endBranch=NULL;	
insilmaril@2: 	visBranch=NULL;
insilmaril@2: 	xLinkState=undefinedXLink;
insilmaril@2: 
insilmaril@2: 	line->hide();
insilmaril@2: }
insilmaril@2: 
insilmaril@2: bool XLinkObj::isUsed()
insilmaril@2: {
insilmaril@2: 	if (beginBranch || endBranch || xLinkState!=undefinedXLink)
insilmaril@2: 		return true;
insilmaril@2: 	else
insilmaril@2: 		return false;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::updateXLink()
insilmaril@2: {
insilmaril@2: 	QPoint a,b;
insilmaril@2: 	Q3PointArray pa (3);
insilmaril@2: 	if (visBranch)
insilmaril@2: 	{
insilmaril@2: 		// Only one of the linked branches is visible
insilmaril@2: 		a=b=visBranch->getChildPos();
insilmaril@2: 		if (visBranch->getOrientation()==OrientRightOfCenter)
insilmaril@2: 		{
insilmaril@2: 			b.setX (b.x()+25);
insilmaril@2: 			pa.putPoints (0,3,
insilmaril@2: 				b.x(),b.y(),
insilmaril@2: 				b.x()-arrowSize,b.y()-arrowSize,
insilmaril@2: 				b.x()-arrowSize,b.y()+arrowSize
insilmaril@2: 			);
insilmaril@2: 			poly->setPoints (pa);
insilmaril@2: 		} else
insilmaril@2: 		{
insilmaril@2: 			b.setX (b.x()-25);
insilmaril@2: 			pa.putPoints (0,3,
insilmaril@2: 				b.x(),b.y(),
insilmaril@2: 				b.x()+arrowSize,b.y()-arrowSize,
insilmaril@2: 				b.x()+arrowSize,b.y()+arrowSize);
insilmaril@2: 			poly->setPoints (pa);
insilmaril@2: 		}	
insilmaril@2: 	} else
insilmaril@2: 	{
insilmaril@2: 		// Both linked branches are visible
insilmaril@2: 		if (beginBranch)
insilmaril@2: 			// If a link is just drawn in the editor,
insilmaril@2: 			// we have already a beginBranch
insilmaril@2: 			a=beginBranch->getChildPos();
insilmaril@2: 		else
insilmaril@2: 			// This shouldn't be reached normally...
insilmaril@2: 			a=beginPos;
insilmaril@2: 		if (xLinkState==activeXLink && endBranch)
insilmaril@2: 			b=endBranch->getChildPos();
insilmaril@2: 		else
insilmaril@2: 			b=endPos;
insilmaril@2: 	}
insilmaril@2: 
insilmaril@2: 
insilmaril@2: 	if (line->startPoint()==a && line->endPoint()==b && !visBranch)
insilmaril@2: 	{
insilmaril@2: 		// update is called from both branches, so only
insilmaril@2: 		// update if something has changed
insilmaril@2: 		return;
insilmaril@2: 	}	
insilmaril@2: 	else
insilmaril@2: 	{
insilmaril@2: 		beginPos=a;
insilmaril@2: 		endPos=b;
insilmaril@2: 		line->setPen (QPen(color, width));
insilmaril@2: 		line->setPoints (a.x(), a.y(), b.x(), b.y());
insilmaril@2: 	}
insilmaril@2: }
insilmaril@2: 
insilmaril@2: BranchObj* XLinkObj::otherBranch(BranchObj* thisBranch)
insilmaril@2: {
insilmaril@2: 	if (!beginBranch && !endBranch)
insilmaril@2: 		return NULL;
insilmaril@2: 	if (thisBranch==beginBranch)
insilmaril@2: 		return endBranch;
insilmaril@2: 	else	
insilmaril@2: 		return beginBranch;
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::positionBBox()
insilmaril@2: {
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::calcBBoxSize()
insilmaril@2: {
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setVisibility (bool b)
insilmaril@2: {
insilmaril@2: 	MapObj::setVisibility (b);
insilmaril@2: 	if (b)
insilmaril@2: 	{
insilmaril@2: 		line->show();
insilmaril@2: 		if (visBranch) 
insilmaril@2: 			poly->show();
insilmaril@2: 		else	
insilmaril@2: 			poly->hide();
insilmaril@2: 	}	
insilmaril@2: 	else
insilmaril@2: 	{
insilmaril@2: 		line->hide();
insilmaril@2: 		poly->hide();
insilmaril@2: 	}	
insilmaril@2: }
insilmaril@2: 
insilmaril@2: void XLinkObj::setVisibility ()
insilmaril@2: {
insilmaril@2: 	if (beginBranch && endBranch)
insilmaril@2: 	{
insilmaril@2: 		if(beginBranch->isVisibleObj() && endBranch->isVisibleObj())
insilmaril@2: 		{	// Both ends are visible
insilmaril@2: 			visBranch=NULL;
insilmaril@2: 			setVisibility (true);
insilmaril@2: 		} else
insilmaril@2: 		{
insilmaril@2: 			if(!beginBranch->isVisibleObj() && !endBranch->isVisibleObj())
insilmaril@2: 			{	//None of the ends is visible
insilmaril@2: 				visBranch=NULL;
insilmaril@2: 				setVisibility (false);
insilmaril@2: 			} else
insilmaril@2: 			{	// Just one end is visible, draw a symbol that shows
insilmaril@2: 				// that there is a link to a scrolled branch
insilmaril@2: 				if (beginBranch->isVisibleObj())
insilmaril@2: 					visBranch=beginBranch;
insilmaril@2: 				else
insilmaril@2: 					visBranch=endBranch;
insilmaril@2: 				setVisibility (true);
insilmaril@2: 			}
insilmaril@2: 		}
insilmaril@2: 	}
insilmaril@2: }
insilmaril@2: 
insilmaril@2: QString XLinkObj::saveToDir ()
insilmaril@2: {
insilmaril@2: 	QString s="";
insilmaril@2: 	if (beginBranch && endBranch &&xLinkState==activeXLink)
insilmaril@2: 	{
insilmaril@2: 		if (beginBranch==endBranch && xLinkState)
insilmaril@2: 			s="";
insilmaril@2: 		else
insilmaril@2: 		{
insilmaril@2: 			QString colAttr=attribut ("color",color.name());
insilmaril@2: 			QString widAttr=attribut ("width",QString().setNum(width,10));
insilmaril@2: 			QString begSelAttr=attribut ("beginBranch",beginBranch->getSelectString());
insilmaril@2: 			QString endSelAttr=attribut ("endBranch",  endBranch->getSelectString());
insilmaril@2: 			s=beginElement ("xlink", colAttr +widAttr +begSelAttr +endSelAttr);
insilmaril@2: 
insilmaril@2: 			s+=endElement ("xlink");
insilmaril@2: 		}
insilmaril@2: 	}
insilmaril@2: 	return s;
insilmaril@2: }
insilmaril@2: