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linkablemapobj.cpp
author insilmaril
Wed Mar 01 14:39:04 2006 +0000 (2006-03-01)
changeset 224 bbb4eeefcc94
parent 175 728f51b71e71
child 225 d5c70aaca22d
permissions -rw-r--r--
1.7.10 includeImagesHorizontally implemented 
     1 #include <math.h>

     2 

     3 #include "linkablemapobj.h"

     4 #include "branchobj.h"

     5 #include "mapeditor.h"

     6 

     7 #include "version.h"

     8 

     9 

    10 /////////////////////////////////////////////////////////////////

    11 // LinkableMapObj

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

    13 

    14 LinkableMapObj::LinkableMapObj():MapObj()

    15 {

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

    17     init ();

    18 }

    19 

    20 LinkableMapObj::LinkableMapObj(QCanvas* c) :MapObj(c)

    21 {

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

    23     init ();

    24 }

    25 

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

    27 {

    28     copy (lmo);

    29 }

    30 

    31 LinkableMapObj::~LinkableMapObj()

    32 {

    33     delete (bottomline);

    34     delete (selbox);

    35 	delete (frame);

    36 	delLink();

    37 }

    38 

    39 void LinkableMapObj::delLink()

    40 {

    41 	switch (style)

    42 	{

    43 		case StyleLine:

    44 			delete (l);

    45 			break;

    46 		case StyleParabel:

    47 			segment.clear();

    48 			break;

    49 		case StylePolyLine:

    50 			delete (p);

    51 			delete (l);

    52 			break;

    53 		case StylePolyParabel:

    54 			delete (p);

    55 			segment.clear();

    56 			break;

    57 		default:

    58 			break;

    59 	}		

    60 }

    61 

    62 void LinkableMapObj::init ()

    63 {

    64     depth=-1;	

    65 	mapEditor=NULL;

    66     childObj=NULL;

    67     parObj=NULL;

    68     parObjTmpBuf=NULL;

    69     parPos=QPoint(0,0);

    70     childPos=QPoint(0,0);

    71 	link2ParPos=false;

    72     l=NULL;

    73     orientation=OrientUndef;

    74     linkwidth=20;		

    75 	thickness_start=8;

    76     style=StyleUndef;

    77 	linkpos=LinkBottom;

    78     segment.setAutoDelete (TRUE);

    79     arcsegs=13;

    80 	QPointArray pa(arcsegs*2+2);

    81     

    82     bottomline=new QCanvasLine(canvas);

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

    84     bottomline->setZ(Z_LINK);

    85     bottomline->show();

    86 

    87     // Prepare showing the selection of a MapObj

    88     selbox = new QCanvasRectangle (canvas);

    89     selbox->setZ(Z_SELBOX);

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

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

    92     selbox->hide();

    93     selected=false;

    94 

    95 	hideLinkUnselected=false;

    96 

    97 	topPad=botPad=leftPad=rightPad=0;

    98 

    99 	// initialize frame

   100 	frame = new FrameObj (canvas);

   101 	

   102 	repositionRequest=false;

   103 

   104 	// Rel Positions

   105 	relPos=QPoint(0,0);

   106 	useOrientation=true;

   107 }

   108 

   109 void LinkableMapObj::copy (LinkableMapObj* other)

   110 {

   111     MapObj::copy(other);

   112 	bboxTotal=other->bboxTotal;

   113     setLinkStyle(other->style);

   114     setLinkColor (other->linkcolor);

   115 	relPos=other->relPos;

   116 	useOrientation=other->useOrientation;

   117 

   118 }

   119 

   120 void LinkableMapObj::setChildObj(LinkableMapObj* o)

   121 {

   122     childObj=o;

   123 }

   124 

   125 void LinkableMapObj::setParObj(LinkableMapObj* o)

   126 {

   127     parObj=o;

   128 	mapEditor=parObj->getMapEditor();

   129 }

   130 

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

   132 {

   133 }

   134 

   135 void LinkableMapObj::unsetParObjTmp()

   136 {

   137 }

   138 

   139 bool LinkableMapObj::hasParObjTmp()

   140 {

   141 	if (parObjTmpBuf) return true;

   142 	return false;

   143 }

   144 

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

   146 {

   147 	useRelPos=b;

   148 }

   149 

   150 void LinkableMapObj::setRelPos()

   151 {

   152 	if (useOrientation)

   153 	{

   154 		if (parObj->getOrientation()==OrientLeftOfCenter)

   155 			relPos.setX ( parObj->x() +parObj->width() - bbox.width() -absPos.x());

   156 		else	

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

   158 	}

   159 	else

   160 		relPos.setX (absPos.x() - parObj->x() );

   161 	relPos.setY (absPos.y() - parObj->y() );

   162 	if (parObj)

   163 	{	

   164 		parObj->calcBBoxSize();

   165 		parObj->requestReposition();

   166 	}	

   167 }

   168 

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

   170 {

   171 	relPos=p;

   172 	if (parObj)

   173 	{	parObj->calcBBoxSize();

   174 		parObj->requestReposition();

   175 	}	

   176 }

   177 

   178 int LinkableMapObj::getTopPad()

   179 {

   180 	return topPad;

   181 }

   182 

   183 int LinkableMapObj::getLeftPad()

   184 {

   185 	return leftPad;

   186 }

   187 

   188 int LinkableMapObj::getRightPad()

   189 {

   190 	return rightPad;

   191 }

   192 

   193 LinkStyle LinkableMapObj::getDefLinkStyle ()

   194 {

   195 	if (!mapEditor) return StyleUndef;

   196 

   197 	LinkStyle ls=mapEditor->getLinkStyle();

   198 	switch (ls)

   199 	{

   200 		case StyleLine: 

   201 			return ls;

   202 			break;

   203 		case StyleParabel:

   204 			return ls;

   205 			break;

   206 		case StylePolyLine:	

   207 			if (depth>1)

   208 				return StyleLine;

   209 			else	

   210 				return ls;

   211 			break;

   212 		case StylePolyParabel:	

   213 			if (depth>1)

   214 				return StyleParabel;

   215 			else	

   216 				return ls;

   217 			break;

   218 		default: 

   219 			break;	

   220 	}	

   221 	return StyleUndef;

   222 }

   223 

   224 void LinkableMapObj::setLinkStyle(LinkStyle newstyle)

   225 {

   226 	//if (newstyle=style) return;

   227 	delLink();

   228 		

   229 	style=newstyle;

   230 

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

   232     {

   233 		int i;

   234 		QCanvasLine* cl;

   235 		switch (style)

   236 		{

   237 			case StyleUndef:

   238 				bottomline->hide();

   239 				break;

   240 			case StyleLine: 

   241 				l = new QCanvasLine(canvas);

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

   243 				l->setZ(Z_LINK);

   244 				if (visible)

   245 					l->show();

   246 				else

   247 					l->hide();

   248 				break;

   249 			case StyleParabel:

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

   251 				{

   252 					cl = new QCanvasLine(canvas);

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

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

   255 					cl->setZ(Z_LINK);

   256 					if (visible)

   257 						cl->show();

   258 					else

   259 						cl->hide();

   260 					segment.append(cl);

   261 				}

   262 				pa0.resize (arcsegs+1);

   263 				break;

   264 			case StylePolyLine:	

   265 				p = new QCanvasPolygon(canvas);

   266 				p->setBrush( linkcolor );

   267 				p->setZ(Z_LINK);

   268 				if (visible)

   269 					p->show();

   270 				else

   271 					p->hide();

   272 				pa0.resize (3);

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

   274 				// missing pixels, when polygon is extremly flat

   275 				l = new QCanvasLine(canvas);

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

   277 				l->setZ(Z_LINK);

   278 				if (visible)

   279 					l->show();

   280 				else

   281 					l->hide();

   282 				break;

   283 			case StylePolyParabel:	

   284 				p = new QCanvasPolygon(canvas);

   285 				p->setBrush( linkcolor );

   286 				p->setZ(Z_LINK);

   287 				if (visible)

   288 					p->show();

   289 				else

   290 					p->hide();

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

   292 				pa1.resize (arcsegs+1);

   293 				pa2.resize (arcsegs+1);

   294 

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

   296 				// to polygon, to avoid missing pixels, 

   297 				// if polygon is extremly flat

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

   299 				{

   300 					cl = new QCanvasLine(canvas);

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

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

   303 					cl->setZ(Z_LINK);

   304 					if (visible)

   305 						cl->show();

   306 					else

   307 						cl->hide();

   308 					segment.append(cl);

   309 				}

   310 				break;

   311 			default: 

   312 				break;	

   313 		}	

   314 	} 

   315 }

   316 

   317 LinkStyle LinkableMapObj::getLinkStyle()

   318 {

   319 	return style;

   320 }

   321 

   322 void LinkableMapObj::setHideLinkUnselected(bool b)

   323 {

   324 	hideLinkUnselected=b;

   325 	setVisibility (visible);

   326 	updateLink();

   327 }

   328 

   329 bool LinkableMapObj::getHideLinkUnselected()

   330 {

   331 	return hideLinkUnselected;

   332 }

   333 

   334 void LinkableMapObj::setLinkPos(LinkPos lp)

   335 {

   336 	linkpos=lp;

   337 }

   338 

   339 LinkPos LinkableMapObj::getLinkPos()

   340 {

   341 	return linkpos;

   342 }

   343 

   344 

   345 void LinkableMapObj::setLinkColor()

   346 {

   347 	// Overloaded in BranchObj and childs

   348 	// here only set default color

   349 	if (mapEditor)

   350 		setLinkColor (mapEditor->getDefLinkColor());

   351 }

   352 

   353 void LinkableMapObj::setLinkColor(QColor col)

   354 {

   355 	linkcolor=col;

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

   357 	QCanvasLine *cl;

   358 	switch (style)

   359 	{

   360 		case StyleLine:

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

   362 			break;	

   363 		case StyleParabel:	

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

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

   366 			break;

   367 		case StylePolyLine:

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

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

   370 			break;

   371 		case StylePolyParabel:	

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

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

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

   375 			break;

   376 		default:

   377 			break;

   378 	} // switch (style)	

   379 }

   380 

   381 QColor LinkableMapObj::getLinkColor()

   382 {

   383 	return linkcolor;

   384 }

   385 

   386 FrameType LinkableMapObj::getFrameType()

   387 {

   388 	return frame->getFrameType();

   389 }

   390 

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

   392 {

   393 	frame->setFrameType(t);

   394 	calcBBoxSize();

   395 	positionBBox();

   396 	requestReposition();

   397 }

   398 

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

   400 {

   401 	frame->setFrameType(t);

   402 	calcBBoxSize();

   403 	positionBBox();

   404 	requestReposition();

   405 }

   406 

   407 void LinkableMapObj::setVisibility (bool v)

   408 {

   409 	QCanvasLine* cl;

   410 	MapObj::setVisibility (v);

   411 	bool visnow=visible;

   412 	if (hideLinkUnselected && !selected)

   413 		visnow=false;

   414 

   415 	if (visnow) 

   416 	{

   417 		bottomline->show();

   418 		switch (style)

   419 		{

   420 			case StyleLine:

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

   422 				break;

   423 			case StyleParabel:	

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

   425 					cl->show();

   426 				break;	

   427 			case StylePolyLine:

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

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

   430 				break;

   431 			case StylePolyParabel:	

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

   433 					cl->show();

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

   435 				break;

   436 			default:

   437 				break;

   438 		}

   439 	} else 

   440 	{

   441 		bottomline->hide();

   442 		switch (style)

   443 		{

   444 			case StyleLine:

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

   446 				break;

   447 			case StyleParabel:	

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

   449 					cl->hide();

   450 				break;	

   451 			case StylePolyLine:

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

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

   454 				break;

   455 			case StylePolyParabel:	

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

   457 					cl->hide();

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

   459 				break;

   460 			default:

   461 				break;

   462 		}

   463 	}	

   464 }

   465 

   466 void LinkableMapObj::updateLink()

   467 {

   468     // needs:

   469     //	childPos of parent

   470     //	orient   of parent

   471     //	style

   472     // 

   473     // sets:

   474     //	orientation

   475     //	childPos

   476     //	parPos

   477 	//  bottomlineY

   478     //	drawing of the link itself

   479 

   480 

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

   482 	// have parents yet...

   483 	if (style==StyleUndef) return;	

   484 

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

   486 		linkpos=LinkBottom;

   487 	else	

   488 		linkpos=LinkMiddle;

   489 	switch (linkpos)

   490 	{

   491 		case LinkMiddle:

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

   493 			break;

   494 		default :

   495 			bottomlineY=clickBox.bottom()-1;	// draw link to bottom of bbox

   496 			break;

   497 	}

   498 	

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

   500 	if (!link2ParPos)

   501 	{

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

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

   504 	} else	

   505 	{

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

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

   508 	} 

   509 

   510 	LinkOrient orientOld=orientation;

   511 

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

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

   514 		// use the orientation of the parent:

   515 		orientation=parObj->getOrientation();

   516     else

   517     {

   518 		// calc orientation depending on position rel to mapCenter

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

   520 			orientation=OrientLeftOfCenter; 

   521 		else

   522 			orientation=OrientRightOfCenter;

   523     }

   524 

   525 	if ((orientation!=orientOld) && (orientOld!= OrientUndef))

   526 	{

   527 		// Orientation just changed. Reorient this subbranch, because move is called

   528 		// before updateLink => Position is still the old one, which could lead to 

   529 		// linking of subranch to itself => segfault

   530 		//

   531 		// Also possible: called in BranchObj::init(), then orientOld==OrientUndef,

   532 		// no need to reposition now

   533 		reposition();

   534 	}

   535 	

   536     if (orientation==OrientLeftOfCenter )

   537     {

   538 		childPos=QPoint (absPos.x(),bottomlineY);

   539 		parPos=QPoint (absPos.x()+ bbox.width(),  bottomlineY );

   540     } else

   541     {

   542 		childPos=QPoint (absPos.x()+ bbox.width(), bottomlineY ); 

   543 		parPos=QPoint (absPos.x(),bottomlineY);

   544     }

   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 	QCanvasLine *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 QPoint LinkableMapObj::getRelPos()

   675 {

   676 	if (!parObj) return QPoint (0,0);

   677     return QPoint(

   678 		absPos.x() - parObj->x(),

   679 		absPos.y() - parObj->y()

   680 	);

   681 }

   682 

   683 

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

   685 {	

   686 	if (useOrientation!=b)

   687 	{

   688 		useOrientation=b;

   689 		requestReposition();

   690 	}	

   691 }

   692 

   693 LinkOrient LinkableMapObj::getOrientation()

   694 {

   695     return orientation;

   696 }

   697 

   698 int LinkableMapObj::getDepth()

   699 {

   700     return depth;

   701 }

   702 

   703 void LinkableMapObj::setMapEditor (MapEditor *me)

   704 {

   705 	mapEditor=me;

   706 }

   707 

   708 MapEditor* LinkableMapObj::getMapEditor ()

   709 {

   710 	return mapEditor;

   711 }

   712 

   713 QPoint LinkableMapObj::getRandPos()

   714 {

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

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

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

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

   719 }

   720 

   721 void LinkableMapObj::alignRelativeTo (QPoint ref)

   722 {

   723 	// FIXME testing, seems not to be used right now...

   724 	cout << "LMO::alignRelTo   ref="<<ref<<endl;

   725 }

   726 

   727 void LinkableMapObj::reposition()

   728 {

   729 	if (depth==0)

   730 	{

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

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

   733 		calcBBoxSizeWithChilds();

   734 

   735 	    alignRelativeTo ( QPoint (absPos.x(),

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

   737 	} else

   738 	{

   739 		// This is only important for moving branches:

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

   741 	    alignRelativeTo ( QPoint (absPos.x(),

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

   743 	}

   744 }

   745 

   746 void LinkableMapObj::requestReposition()

   747 {

   748 	if (!repositionRequest)

   749 	{

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

   751 		// been done yet

   752 		repositionRequest=true;

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

   754 	}

   755 }

   756 

   757 void LinkableMapObj::forceReposition()

   758 {

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

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

   761 	// which could collect requests for a reposition.

   762 	// Then we have to call forceReposition()

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

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

   765 	// the end, thus check first:

   766 

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

   768 	

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

   770 	

   771 	if (parObj) 

   772 		parObj->forceReposition(); 

   773 	else 

   774 		reposition(); 

   775 }

   776 

   777 bool LinkableMapObj::repositionRequested()

   778 {

   779 	return repositionRequest;

   780 }

   781 

   782 

   783 void LinkableMapObj::setSelBox()

   784 {

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

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

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

   788 }

   789 

   790 void LinkableMapObj::select()

   791 {

   792 	setSelBox();

   793     selected=true;

   794     selbox->show();

   795 	setVisibility (visible);

   796 }

   797 

   798 

   799 void LinkableMapObj::unselect()

   800 {

   801     selected=false;

   802     selbox->hide();

   803 	setVisibility (visible);

   804 }

   805 

   806 void LinkableMapObj::parabel (QPointArray &ya, double p1x, double p1y, double p2x, double p2y)

   807 

   808 {

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

   810 	double vy=p2y - p1y;

   811 

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

   813 	

   814 	double pnx;				// next point

   815 	double pny;

   816 	double m;

   817 

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

   819 		m=0;

   820 	else	

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

   822 	dx=vx/(arcsegs);

   823 	int i;

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

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

   826 	{	

   827 		pnx=p1x+dx;

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

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

   830 		p1x=pnx;

   831 		p1y=pny;

   832 	}	

   833 }

   834 

   835 QString LinkableMapObj::getLinkAttr ()

   836 {

   837 	if (hideLinkUnselected)

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

   839 	else

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

   841 	

   842 }
vym