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linkablemapobj.cpp
author insilmaril
Thu, 16 Nov 2006 15:20:54 +0000
changeset 402 ae11bca6bbd8
parent 398 d42881c25fb6
child 404 53efc2562a7d
permissions -rw-r--r--
added version.cpp 
     1 #include <math.h>

     2 

     3 #include "linkablemapobj.h"

     4 #include "branchobj.h"

     5 #include "mapeditor.h"

     6 

     7 #include "version.h"

     8 //Added by qt3to4:

     9 #include <Q3PointArray>

    10 

    11 

    12 /////////////////////////////////////////////////////////////////

    13 // LinkableMapObj

    14 /////////////////////////////////////////////////////////////////

    15 

    16 LinkableMapObj::LinkableMapObj():MapObj()

    17 {

    18   //  cout << "Const LinkableMapObj ()\n";

    19     init ();

    20 }

    21 

    22 LinkableMapObj::LinkableMapObj(Q3Canvas* c) :MapObj(c)

    23 {

    24 //    cout << "Const LinkableMapObj\n";

    25     init ();

    26 }

    27 

    28 LinkableMapObj::LinkableMapObj (LinkableMapObj* lmo) : MapObj (lmo->canvas)

    29 {

    30     copy (lmo);

    31 }

    32 

    33 LinkableMapObj::~LinkableMapObj()

    34 {

    35     delete (bottomline);

    36     delete (selbox);

    37 	delete (frame);

    38 	delLink();

    39 }

    40 

    41 void LinkableMapObj::delLink()

    42 {

    43 	switch (style)

    44 	{

    45 		case StyleLine:

    46 			delete (l);

    47 			break;

    48 		case StyleParabel:

    49 			segment.clear();

    50 			break;

    51 		case StylePolyLine:

    52 			delete (p);

    53 			delete (l);

    54 			break;

    55 		case StylePolyParabel:

    56 			delete (p);

    57 			segment.clear();

    58 			break;

    59 		default:

    60 			break;

    61 	}		

    62 }

    63 

    64 void LinkableMapObj::init ()

    65 {

    66     depth=-1;	

    67 	mapEditor=NULL;

    68     childObj=NULL;

    69     parObj=NULL;

    70     parObjTmpBuf=NULL;

    71     parPos=QPoint(0,0);

    72     childPos=QPoint(0,0);

    73 	link2ParPos=false;

    74     l=NULL;

    75     orientation=OrientUndef;

    76     linkwidth=20;		

    77 	thickness_start=8;

    78     style=StyleUndef;

    79 	linkpos=LinkBottom;

    80     segment.setAutoDelete (TRUE);

    81     arcsegs=13;

    82 	Q3PointArray pa(arcsegs*2+2);

    83     

    84     bottomline=new Q3CanvasLine(canvas);

    85     bottomline->setPen( QPen(linkcolor, 1) );

    86     bottomline->setZ(Z_LINK);

    87     bottomline->show();

    88 

    89     // Prepare showing the selection of a MapObj

    90     selbox = new Q3CanvasRectangle (canvas);

    91     selbox->setZ(Z_SELBOX);

    92     selbox->setBrush( QColor(255,255,0) );

    93     selbox->setPen( QPen(QColor(255,255,0) ));

    94     selbox->hide();

    95     selected=false;

    96 

    97 	hideLinkUnselected=false;

    98 

    99 	topPad=botPad=leftPad=rightPad=0;

   100 

   101 	// initialize frame

   102 	frame = new FrameObj (canvas);

   103 	

   104 	repositionRequest=false;

   105 

   106 	// Rel Positions

   107 	relPos=QPoint(0,0);

   108 	useRelPos=false;

   109 	useOrientation=true;

   110 }

   111 

   112 void LinkableMapObj::copy (LinkableMapObj* other)

   113 {

   114     MapObj::copy(other);

   115 	bboxTotal=other->bboxTotal;

   116     setLinkStyle(other->style);

   117     setLinkColor (other->linkcolor);

   118 	relPos=other->relPos;

   119 	useOrientation=other->useOrientation;

   120 

   121 }

   122 

   123 void LinkableMapObj::setChildObj(LinkableMapObj* o)

   124 {

   125     childObj=o;

   126 }

   127 

   128 void LinkableMapObj::setParObj(LinkableMapObj* o)

   129 {

   130     parObj=o;

   131 	mapEditor=parObj->getMapEditor();

   132 }

   133 

   134 void LinkableMapObj::setParObjTmp(LinkableMapObj*,QPoint,int)

   135 {

   136 }

   137 

   138 void LinkableMapObj::unsetParObjTmp()

   139 {

   140 }

   141 

   142 bool LinkableMapObj::hasParObjTmp()

   143 {

   144 	if (parObjTmpBuf) return true;

   145 	return false;

   146 }

   147 

   148 void LinkableMapObj::setUseRelPos (const bool &b)

   149 {

   150 	useRelPos=b;

   151 }

   152 

   153 void LinkableMapObj::setRelPos()

   154 {

   155 	if (parObj)

   156 	{	

   157 		relPos.setX (absPos.x() - parObj->getChildPos().x() );

   158 		relPos.setY (absPos.y() - parObj->getChildPos().y() );

   159 		parObj->calcBBoxSize();

   160 	}	else

   161 	{

   162 		qWarning ("LMO::setRelPos   No parent yet!");

   163 	}

   164 }

   165 

   166 void LinkableMapObj::setRelPos(const QPoint &p)

   167 {

   168 	relPos=p;

   169 	if (parObj)

   170 	{		

   171 		parObj->calcBBoxSize();

   172 		requestReposition();

   173 	}	else

   174 	{

   175 		qWarning ("LMO::setRelPos   No parent yet!");

   176 	}

   177 }

   178 

   179 QPoint LinkableMapObj::getRelPos()

   180 {

   181 	if (!parObj) return QPoint();

   182 	return relPos;

   183 }

   184 

   185 int LinkableMapObj::getTopPad()

   186 {

   187 	return topPad;

   188 }

   189 

   190 int LinkableMapObj::getLeftPad()

   191 {

   192 	return leftPad;

   193 }

   194 

   195 int LinkableMapObj::getRightPad()

   196 {

   197 	return rightPad;

   198 }

   199 

   200 LinkStyle LinkableMapObj::getDefLinkStyle ()

   201 {

   202 	if (!mapEditor) return StyleUndef;

   203 

   204 	LinkStyle ls=mapEditor->getMapLinkStyle();

   205 	switch (ls)

   206 	{

   207 		case StyleLine: 

   208 			return ls;

   209 			break;

   210 		case StyleParabel:

   211 			return ls;

   212 			break;

   213 		case StylePolyLine:	

   214 			if (depth>1)

   215 				return StyleLine;

   216 			else	

   217 				return ls;

   218 			break;

   219 		case StylePolyParabel:	

   220 			if (depth>1)

   221 				return StyleParabel;

   222 			else	

   223 				return ls;

   224 			break;

   225 		default: 

   226 			break;	

   227 	}	

   228 	return StyleUndef;

   229 }

   230 

   231 void LinkableMapObj::setLinkStyle(LinkStyle newstyle)

   232 {

   233 	//if (newstyle=style) return;

   234 	delLink();

   235 		

   236 	style=newstyle;

   237 

   238     if (childObj!=NULL && parObj != NULL)

   239     {

   240 		int i;

   241 		Q3CanvasLine* cl;

   242 		switch (style)

   243 		{

   244 			case StyleUndef:

   245 				bottomline->hide();

   246 				break;

   247 			case StyleLine: 

   248 				l = new Q3CanvasLine(canvas);

   249 				l->setPen( QPen(linkcolor, 1) );

   250 				l->setZ(Z_LINK);

   251 				if (visible)

   252 					l->show();

   253 				else

   254 					l->hide();

   255 				break;

   256 			case StyleParabel:

   257 				for (i=0;i<arcsegs;i++)

   258 				{

   259 					cl = new Q3CanvasLine(canvas);

   260 					cl->setPen( QPen(linkcolor, 1) );

   261 					cl->setPoints( 0,0,i*10,100);

   262 					cl->setZ(Z_LINK);

   263 					if (visible)

   264 						cl->show();

   265 					else

   266 						cl->hide();

   267 					segment.append(cl);

   268 				}

   269 				pa0.resize (arcsegs+1);

   270 				break;

   271 			case StylePolyLine:	

   272 				p = new Q3CanvasPolygon(canvas);

   273 				p->setBrush( linkcolor );

   274 				p->setZ(Z_LINK);

   275 				if (visible)

   276 					p->show();

   277 				else

   278 					p->hide();

   279 				pa0.resize (3);

   280 				// TODO a bit awkward: draw the lines additionally to polygon, to avoid

   281 				// missing pixels, when polygon is extremly flat

   282 				l = new Q3CanvasLine(canvas);

   283 				l->setPen( QPen(linkcolor, 1) );

   284 				l->setZ(Z_LINK);

   285 				if (visible)

   286 					l->show();

   287 				else

   288 					l->hide();

   289 				break;

   290 			case StylePolyParabel:	

   291 				p = new Q3CanvasPolygon(canvas);

   292 				p->setBrush( linkcolor );

   293 				p->setZ(Z_LINK);

   294 				if (visible)

   295 					p->show();

   296 				else

   297 					p->hide();

   298 				pa0.resize (arcsegs*2+2);

   299 				pa1.resize (arcsegs+1);

   300 				pa2.resize (arcsegs+1);

   301 

   302 				// TODO a bit awkward: draw the lines additionally 

   303 				// to polygon, to avoid missing pixels, 

   304 				// if polygon is extremly flat

   305 				for (i=0;i<arcsegs;i++)

   306 				{

   307 					cl = new Q3CanvasLine(canvas);

   308 					cl->setPen( QPen(linkcolor, 1) );

   309 					cl->setPoints( 0,0,i*10,100);

   310 					cl->setZ(Z_LINK);

   311 					if (visible)

   312 						cl->show();

   313 					else

   314 						cl->hide();

   315 					segment.append(cl);

   316 				}

   317 				break;

   318 			default: 

   319 				break;	

   320 		}	

   321 	} 

   322 }

   323 

   324 LinkStyle LinkableMapObj::getLinkStyle()

   325 {

   326 	return style;

   327 }

   328 

   329 void LinkableMapObj::setHideLinkUnselected(bool b)

   330 {

   331 	hideLinkUnselected=b;

   332 	setVisibility (visible);

   333 	updateLink();

   334 }

   335 

   336 bool LinkableMapObj::getHideLinkUnselected()

   337 {

   338 	return hideLinkUnselected;

   339 }

   340 

   341 void LinkableMapObj::setLinkPos(LinkPos lp)

   342 {

   343 	linkpos=lp;

   344 }

   345 

   346 LinkPos LinkableMapObj::getLinkPos()

   347 {

   348 	return linkpos;

   349 }

   350 

   351 

   352 void LinkableMapObj::setLinkColor()

   353 {

   354 	// Overloaded in BranchObj and childs

   355 	// here only set default color

   356 	if (mapEditor)

   357 		setLinkColor (mapEditor->getMapDefLinkColor());

   358 }

   359 

   360 void LinkableMapObj::setLinkColor(QColor col)

   361 {

   362 	linkcolor=col;

   363     bottomline->setPen( QPen(linkcolor, 1) );

   364 	Q3CanvasLine *cl;

   365 	switch (style)

   366 	{

   367 		case StyleLine:

   368 			l->setPen( QPen(col,1));

   369 			break;	

   370 		case StyleParabel:	

   371 			for (cl=segment.first(); cl; cl=segment.next() )

   372 				cl->setPen( QPen(col,1));

   373 			break;

   374 		case StylePolyLine:

   375 			p->setBrush( QBrush(col));

   376 			l->setPen( QPen(col,1));

   377 			break;

   378 		case StylePolyParabel:	

   379 			p->setBrush( QBrush(col));

   380 			for (cl=segment.first(); cl; cl=segment.next() )

   381 				cl->setPen( QPen(col,1));

   382 			break;

   383 		default:

   384 			break;

   385 	} // switch (style)	

   386 }

   387 

   388 QColor LinkableMapObj::getLinkColor()

   389 {

   390 	return linkcolor;

   391 }

   392 

   393 FrameType LinkableMapObj::getFrameType()

   394 {

   395 	return frame->getFrameType();

   396 }

   397 

   398 void LinkableMapObj::setFrameType(const FrameType &t)

   399 {

   400 	frame->setFrameType(t);

   401 	calcBBoxSize();

   402 	positionBBox();

   403 	requestReposition();

   404 }

   405 

   406 void LinkableMapObj::setFrameType(const QString &t)

   407 {

   408 	frame->setFrameType(t);

   409 	calcBBoxSize();

   410 	positionBBox();

   411 	requestReposition();

   412 }

   413 

   414 void LinkableMapObj::setVisibility (bool v)

   415 {

   416 	Q3CanvasLine* cl;

   417 	MapObj::setVisibility (v);

   418 	bool visnow=visible;

   419 

   420 	// We can hide the link, while object is not selected

   421 	if (hideLinkUnselected && !selected)

   422 		visnow=false;

   423 

   424 	if (visnow) 

   425 	{

   426 		bottomline->show();

   427 		switch (style)

   428 		{

   429 			case StyleLine:

   430 				if (l) l->show();

   431 				break;

   432 			case StyleParabel:	

   433 				for (cl=segment.first(); cl; cl=segment.next() )

   434 					cl->show();

   435 				break;	

   436 			case StylePolyLine:

   437 				if (p) p->show();

   438 				if (l) l->show();

   439 				break;

   440 			case StylePolyParabel:	

   441 				for (cl=segment.first(); cl; cl=segment.next() )

   442 					cl->show();

   443 				if (p) p->show();

   444 				break;

   445 			default:

   446 				break;

   447 		}

   448 	} else 

   449 	{

   450 		bottomline->hide();

   451 		switch (style)

   452 		{

   453 			case StyleLine:

   454 				if (l) l->hide();

   455 				break;

   456 			case StyleParabel:	

   457 				for (cl=segment.first(); cl; cl=segment.next() )

   458 					cl->hide();

   459 				break;	

   460 			case StylePolyLine:

   461 				if (p) p->hide();

   462 				if (l) l->hide();

   463 				break;

   464 			case StylePolyParabel:	

   465 				for (cl=segment.first(); cl; cl=segment.next() )

   466 					cl->hide();

   467 				if (p) p->hide();

   468 				break;

   469 			default:

   470 				break;

   471 		}

   472 	}	

   473 }

   474 

   475 void LinkableMapObj::setOrientation()

   476 {

   477 	LinkOrient orientOld=orientation;

   478 

   479 	if (!parObj) 

   480 	{

   481 		orientation=OrientUndef;

   482 		return;

   483 	}

   484 		

   485     // Set orientation, first look for orientation of parent

   486     if (parObj->getOrientation() != OrientUndef ) 

   487 		// use the orientation of the parent:

   488 		orientation=parObj->getOrientation();

   489     else

   490     {

   491 		// calc orientation depending on position rel to parent

   492 		if (absPos.x() < QPoint(parObj->getChildPos() ).x() )

   493 			orientation=OrientLeftOfCenter; 

   494 		else

   495 			orientation=OrientRightOfCenter;

   496     }

   497 	if (orientOld!=orientation) requestReposition();

   498 }

   499 

   500 void LinkableMapObj::updateLink()

   501 {

   502     // needs:

   503     //	childPos of parent

   504     //	orient   of parent

   505     //	style

   506     // 

   507     // sets:

   508     //	orientation

   509     //	childPos	(by calling setDockPos())

   510     //	parPos		(by calling setDockPos())

   511 	//  bottomlineY

   512     //	drawing of the link itself

   513 

   514 	// updateLink is called from move, but called from constructor we don't

   515 	// have parents yet...

   516 	if (style==StyleUndef) return;	

   517 

   518 	if (frame->getFrameType() == NoFrame)

   519 		linkpos=LinkBottom;

   520 	else	

   521 		linkpos=LinkMiddle;

   522 	switch (linkpos)

   523 	{

   524 		case LinkMiddle:

   525 			bottomlineY=bbox.top()+bbox.height() /2;	// draw link to middle (of frame)

   526 			break;

   527 		default :

   528 			bottomlineY=bbox.bottom()-1;	// draw link to bottom of box

   529 			break;

   530 	}

   531 	

   532     double p2x,p2y;								// Set P2 Before setting

   533 	if (!link2ParPos)

   534 	{

   535 		p2x=QPoint( parObj->getChildPos() ).x();	// P1, we have to look at

   536 		p2y=QPoint( parObj->getChildPos() ).y();	// orientation

   537 	} else	

   538 	{

   539 		p2x=QPoint( parObj->getParPos() ).x();	

   540 		p2y=QPoint( parObj->getParPos() ).y();

   541 	} 

   542 

   543 	setDockPos(); // Call overloaded method

   544 	setOrientation();

   545 

   546 	double p1x=parPos.x();	// Link is drawn from P1 to P2

   547 	double p1y=parPos.y();

   548 

   549 	double vx=p2x - p1x;	// V=P2-P1

   550 	double vy=p2y - p1y;

   551 

   552 	// Draw the horizontal line below heading (from ChildPos to ParPos)

   553 	bottomline->setPoints (qRound(childPos.x()),

   554 		qRound(childPos.y()),

   555 		qRound(p1x),

   556 		qRound(p1y) );

   557 

   558 	double a;	// angle

   559 	if (vx > -0.000001 && vx < 0.000001)

   560 		a=M_PI_2;

   561 	else

   562 		a=atan( vy / vx );

   563 	// "turning point" for drawing polygonal links

   564 	QPoint tp (-qRound(sin (a)*thickness_start), qRound(cos (a)*thickness_start));	

   565 	

   566 	Q3CanvasLine *cl;

   567 

   568 	int i;

   569 

   570     // Draw the link

   571 	switch (style)

   572 	{

   573 		case StyleLine:

   574 			l->setPoints( qRound (parPos.x()),

   575 				qRound(parPos.y()),

   576 				qRound(p2x),

   577 				qRound(p2y) );

   578 			break;	

   579 		case StyleParabel:	

   580 			parabel (pa0, p1x,p1y,p2x,p2y);

   581 			i=0;

   582 			for (cl=segment.first(); cl; cl=segment.next() )

   583 			{	

   584 				cl->setPoints( pa0.point(i).x(), pa0.point(i).y(),pa0.point(i+1).x(),pa0.point(i+1).y());

   585 				i++;

   586 			}

   587 			break;

   588 		case StylePolyLine:

   589 			pa0[0]=QPoint (qRound(p2x+tp.x()), qRound(p2y+tp.y()));

   590 			pa0[1]=QPoint (qRound(p2x-tp.x()), qRound(p2y-tp.y()));

   591 			pa0[2]=QPoint (qRound (parPos.x()), qRound(parPos.y()) );

   592 			p->setPoints (pa0);

   593 			// here too, draw line to avoid missing pixels

   594 			l->setPoints( qRound (parPos.x()),

   595 				qRound(parPos.y()),

   596 				qRound(p2x),

   597 				qRound(p2y) );

   598 			break;

   599 		case StylePolyParabel:	

   600 			parabel (pa1, p1x,p1y,p2x+tp.x(),p2y+tp.y());

   601 			parabel (pa2, p1x,p1y,p2x-tp.x(),p2y-tp.y());

   602 			for (i=0;i<=arcsegs;i++)

   603 			{

   604 				// Combine the arrays to a single one

   605 				pa0[i]=pa1[i];

   606 				pa0[i+arcsegs+1]=pa2[arcsegs-i];

   607 			}	

   608 			p->setPoints (pa0);

   609 			i=0;

   610 			for (cl=segment.first(); cl; cl=segment.next() )

   611 			{	

   612 				cl->setPoints( pa1.point(i).x(), pa1.point(i).y(),pa1.point(i+1).x(),pa1.point(i+1).y());

   613 				i++;

   614 			}

   615 			break;

   616 		default:

   617 			break;

   618 	} // switch (style)	

   619 }

   620 	

   621 LinkableMapObj* LinkableMapObj::getChildObj()

   622 {

   623     return childObj;

   624 }

   625 

   626 LinkableMapObj* LinkableMapObj::getParObj()

   627 {

   628     return parObj;

   629 }

   630 

   631 LinkableMapObj* LinkableMapObj::findObjBySelect (QString s)

   632 {

   633 	LinkableMapObj *lmo=this;

   634 	QString part;

   635 	QString typ;

   636 	QString num;

   637 	while (!s.isEmpty() )

   638 	{

   639 		part=s.section(",",0,0);

   640 		typ=part.left (3);

   641 		num=part.right(part.length() - 3);

   642 		if (typ=="mc:")

   643 		{

   644 			if (depth>0)

   645 				return false;	// in a subtree there is no center

   646 			else

   647 				break;

   648 		} else

   649 			if (typ=="bo:")

   650 				lmo=((BranchObj*)(lmo))->getBranchNum (num.toUInt());

   651 			else

   652 				if (typ=="fi:")

   653 					lmo=((BranchObj*)(lmo))->getFloatImageNum (num.toUInt());

   654 		if (!lmo) break;

   655 		

   656 		if (s.contains(","))

   657 			s=s.right(s.length() - part.length() -1 );

   658 		else	

   659 			break;

   660 	}

   661 	return lmo;

   662 }

   663 

   664 QPoint LinkableMapObj::getChildPos()

   665 {

   666     return childPos;

   667 }

   668 

   669 QPoint LinkableMapObj::getParPos()

   670 {

   671     return parPos;

   672 }

   673 

   674 void LinkableMapObj::setUseOrientation (const bool &b)

   675 {	

   676 	if (useOrientation!=b)

   677 	{

   678 		useOrientation=b;

   679 		requestReposition();

   680 	}	

   681 }

   682 

   683 LinkOrient LinkableMapObj::getOrientation()

   684 {

   685     return orientation;

   686 }

   687 

   688 int LinkableMapObj::getDepth()

   689 {

   690     return depth;

   691 }

   692 

   693 void LinkableMapObj::setMapEditor (MapEditor *me)

   694 {

   695 	mapEditor=me;

   696 }

   697 

   698 MapEditor* LinkableMapObj::getMapEditor ()

   699 {

   700 	return mapEditor;

   701 }

   702 

   703 QPoint LinkableMapObj::getRandPos()

   704 {

   705 	// Choose a random position with given distance to parent:

   706 	double a=rand()%360 * 2 * M_PI / 360;

   707     return QPoint ( (int)( + 150*cos (a)),

   708                     (int)( + 150*sin (a)));

   709 }

   710 

   711 /*

   712 void LinkableMapObj::alignRelativeTo (QPoint ref)

   713 {

   714 	// Overloaded, only called for BO, FIO, ...

   715 	// FIXME not needed?

   716 }

   717 */

   718 

   719 void LinkableMapObj::reposition()

   720 {

   721 	cout << "LMO::reposition\n";

   722 	// FIXME not needed? Is overloaded in BranchObj...

   723 	/*

   724 	if (depth==0)

   725 	{

   726 		// only calculate the sizes once. If the deepest LMO changes its height,

   727 		// all upper LMOs have to change, too.

   728 		calcBBoxSizeWithChilds();

   729 

   730 	    alignRelativeTo ( QPoint (absPos.x(),

   731 							absPos.y()-(bboxTotal.height()-bbox.height())/2) );

   732 	} else

   733 	{

   734 		// This is only important for moving branches:

   735 		// For editing a branch it isn't called...

   736 		cout << "  reposition to abs "<<absPos<<endl;

   737 	    alignRelativeTo ( QPoint (absPos.x(),

   738 							absPos.y()-(bboxTotal.height()-bbox.height())/2) );

   739 	}

   740 	*/

   741 }

   742 

   743 void LinkableMapObj::requestReposition()

   744 {

   745 	if (!repositionRequest)

   746 	{

   747 		// Pass on the request to parental objects, if this hasn't

   748 		// been done yet

   749 		repositionRequest=true;

   750 		if (parObj) parObj->requestReposition();

   751 	}

   752 }

   753 

   754 void LinkableMapObj::forceReposition()

   755 {

   756 	// Sometimes a reposition has to be done immediatly: For example

   757 	// if the note editor flag changes, there is no user event in mapeditor

   758 	// which could collect requests for a reposition.

   759 	// Then we have to call forceReposition()

   760 	// But no rule without exception: While loading a map or undoing it,

   761 	// we want to block expensive repositioning, but just do it once at

   762 	// the end, thus check first:

   763 

   764 	if (mapEditor->isRepositionBlocked()) return;

   765 	

   766 	// Pass on the request to parental objects, if this hasn't been done yet

   767 	

   768 	if (parObj) 

   769 		parObj->forceReposition(); 

   770 	else 

   771 		reposition(); 

   772 }

   773 

   774 bool LinkableMapObj::repositionRequested()

   775 {

   776 	return repositionRequest;

   777 }

   778 

   779 

   780 void LinkableMapObj::setSelBox()

   781 {

   782     selbox->setX (clickBox.x() );

   783     selbox->setY (clickBox.y() );

   784     selbox->setSize (clickBox.width(), clickBox.height() );

   785 }

   786 

   787 void LinkableMapObj::select()

   788 {

   789 	setSelBox();

   790     selected=true;

   791     selbox->show();

   792 // FIXME not needed?	

   793 	setVisibility (visible);

   794 }

   795 

   796 

   797 void LinkableMapObj::unselect()

   798 {

   799     selected=false;

   800     selbox->hide();

   801 	// Maybe we have to hide the link:

   802 	setVisibility (visible);

   803 }

   804 

   805 void LinkableMapObj::parabel (Q3PointArray &ya, double p1x, double p1y, double p2x, double p2y)

   806 

   807 {

   808 	double vx=p2x - p1x;	// V=P2-P1

   809 	double vy=p2y - p1y;

   810 

   811 	double dx;				// delta x during calculation of parabel

   812 	

   813 	double pnx;				// next point

   814 	double pny;

   815 	double m;

   816 

   817 	if (vx > -0.0001 && vx < 0.0001)

   818 		m=0;

   819 	else	

   820 		m=(vy / (vx*vx));

   821 	dx=vx/(arcsegs);

   822 	int i;

   823 	ya.setPoint (0,QPoint (qRound(p1x),qRound(p1y)));

   824 	for (i=1;i<=arcsegs;i++)

   825 	{	

   826 		pnx=p1x+dx;

   827 		pny=m*(pnx-parPos.x())*(pnx-parPos.x())+parPos.y();

   828 		ya.setPoint (i,QPoint (qRound(pnx),qRound(pny)));

   829 		p1x=pnx;

   830 		p1y=pny;

   831 	}	

   832 }

   833 

   834 QString LinkableMapObj::getLinkAttr ()

   835 {

   836 	if (hideLinkUnselected)

   837 		return attribut ("hideLink","true");

   838 	else

   839 		return attribut ("hideLink","false");

   840 	

   841 }
vym