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linkablemapobj.cpp
author insilmaril
Wed, 20 May 2009 15:40:14 +0000
changeset 772 e3f722759c7e
parent 760 59614eaf5fbb
child 773 340bc29da9a0
permissions -rw-r--r--
Fixed segfault when closing a map 
     1 #include <iostream>

     2 #include <math.h>

     3 

     4 #include "linkablemapobj.h"

     5 #include "branchobj.h"

     6 #include "vymmodel.h"

     7 

     8 using namespace std;

     9 

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

    11 // LinkableMapObj

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

    13 

    14 LinkableMapObj::LinkableMapObj():MapObj()

    15 {

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

    17     init ();

    18 }

    19 

    20 LinkableMapObj::LinkableMapObj(QGraphicsScene* s) :MapObj(s)

    21 {

    22 //    cout << "Const LinkableMapObj (s)\n";

    23     init ();

    24 }

    25 

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

    27 {

    28     copy (lmo);

    29 }

    30 

    31 LinkableMapObj::~LinkableMapObj()

    32 {

    33     delete (bottomline);

    34 	delLink();

    35 }

    36 

    37 void LinkableMapObj::delLink()

    38 {

    39 	switch (style)

    40 	{

    41 		case Line:

    42 			delete (l);

    43 			break;

    44 		case Parabel:

    45 			while (!segment.isEmpty()) delete segment.takeFirst();

    46 			break;

    47 		case PolyLine:

    48 			delete (p);

    49 			break;

    50 		case PolyParabel:

    51 			delete (p);

    52 			break;

    53 		default:

    54 			break;

    55 	}		

    56 }

    57 

    58 void LinkableMapObj::init ()

    59 {

    60 	model=NULL;

    61 

    62     childObj=NULL;

    63     parObj=NULL;

    64     parObjTmpBuf=NULL;

    65     parPos=QPointF(0,0);

    66     childPos=QPointF(0,0);

    67 	link2ParPos=false;

    68     l=NULL;

    69 	p=NULL;

    70     orientation=UndefinedOrientation;

    71     linkwidth=20;		

    72 	thickness_start=8;

    73     style=UndefinedStyle;

    74 	linkpos=Bottom;

    75     arcsegs=13;

    76     

    77 // TODO instead of linkcolor pen.color() could be used	all around

    78 	pen.setWidth (1);

    79 	pen.setColor (linkcolor);

    80 	pen.setCapStyle ( Qt::RoundCap );

    81 	bottomline=scene->addLine(QLineF(1,1,1,1),pen);

    82     bottomline->setZValue(Z_LINK);

    83     bottomline->show();

    84 

    85     // Prepare showing the selection of a MapObj

    86     selected=false;

    87 

    88 	hideLinkUnselected=false;

    89 

    90 	topPad=botPad=leftPad=rightPad=0;

    91 

    92 	repositionRequest=false;

    93 

    94 	// Rel Positions

    95 	relPos=QPointF(0,0);

    96 	useRelPos=false;

    97 	useOrientation=true;

    98 

    99 	// Crossreference to treemodel

   100 	treeItem=NULL;

   101 }

   102 

   103 void LinkableMapObj::copy (LinkableMapObj* other)

   104 {

   105     MapObj::copy(other);

   106 	model=other->model;

   107 	bboxTotal=other->bboxTotal;

   108     setLinkStyle(other->style);

   109     setLinkColor (other->linkcolor);

   110 	relPos=other->relPos;

   111 	useOrientation=other->useOrientation;

   112 	treeItem=other->treeItem;

   113 }

   114 

   115 void LinkableMapObj::setTreeItem (TreeItem *ti)

   116 {

   117 	treeItem=ti;

   118 }

   119 

   120 TreeItem* LinkableMapObj::getTreeItem () const

   121 {

   122 	return treeItem;

   123 }

   124 

   125 void LinkableMapObj::setModel (VymModel *vm)

   126 {

   127 	model=vm;

   128 }

   129 

   130 VymModel* LinkableMapObj::getModel()

   131 {

   132 	return model;

   133 }

   134 

   135 void LinkableMapObj::setChildObj(LinkableMapObj* o)

   136 {

   137     childObj=o;

   138 }

   139 

   140 void LinkableMapObj::setParObj(LinkableMapObj* o)

   141 {

   142     parObj=o;

   143 	if (parObj) model=parObj->getModel();

   144 }

   145 

   146 void LinkableMapObj::setParObjTmp(LinkableMapObj*,QPointF,int)	// FIXME-3 make pure virtual

   147 {

   148 }

   149 

   150 void LinkableMapObj::unsetParObjTmp()	// FIXME-3 make pure virtual

   151 {

   152 }

   153 

   154 bool LinkableMapObj::hasParObjTmp()

   155 {

   156 	if (parObjTmpBuf) return true;

   157 	return false;

   158 }

   159 

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

   161 {

   162 	useRelPos=b;

   163 }

   164 

   165 void LinkableMapObj::setRelPos()

   166 {

   167 	if (parObj)

   168 	{	

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

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

   171 		parObj->calcBBoxSize();

   172 	}	

   173 }

   174 

   175 void LinkableMapObj::setRelPos(const QPointF &p)

   176 {

   177 	relPos=p;

   178 	if (parObj)

   179 	{		

   180 		parObj->calcBBoxSize();

   181 		requestReposition();

   182 	}

   183 }

   184 

   185 QPointF LinkableMapObj::getRelPos()

   186 {

   187 	if (!parObj) return QPointF();

   188 	return relPos;

   189 }

   190 

   191 qreal LinkableMapObj::getTopPad()

   192 {

   193 	return topPad;

   194 }

   195 

   196 qreal LinkableMapObj::getLeftPad()

   197 {

   198 	return leftPad;

   199 }

   200 

   201 qreal LinkableMapObj::getRightPad()

   202 {

   203 	return rightPad;

   204 }

   205 

   206 LinkableMapObj::Style LinkableMapObj::getDefLinkStyle ()

   207 {

   208 	if (!model)

   209 	{

   210 		qWarning ("LMO::getDefLinkStyle   model=NULL");

   211 		//return UndefinedStyle;

   212 	}

   213 	Style ls=model->getMapLinkStyle();

   214 	int depth=treeItem->depth();

   215 	if (depth==0) return UndefinedStyle;

   216 	switch (ls)

   217 	{

   218 		case Line: 

   219 			return ls;

   220 			break;

   221 		case Parabel:

   222 			return ls;

   223 			break;

   224 		case PolyLine:	

   225 			if (depth>1)

   226 				return Line;

   227 			else	

   228 				return ls;

   229 			break;

   230 		case PolyParabel:	

   231 			if (depth>1)

   232 				return Parabel;

   233 			else	

   234 				return ls;

   235 			break;

   236 		default: 

   237 			break;	

   238 	}	

   239 	return UndefinedStyle;

   240 }

   241 

   242 void LinkableMapObj::setLinkStyle(Style newstyle)

   243 {

   244 	//if (newstyle=style) return; FIXME-3

   245 	delLink();

   246 		

   247 	style=newstyle;

   248 

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

   250     {

   251 		QGraphicsLineItem *cl;

   252 		switch (style)

   253 		{

   254 			case UndefinedStyle:

   255 				bottomline->hide();

   256 				break;

   257 			case Line: 

   258 				l = scene->addLine(QLineF(1,1,1,1),pen);

   259 				l->setZValue(Z_LINK);

   260 				if (visible)

   261 					l->show();

   262 				else

   263 					l->hide();

   264 				break;

   265 			case Parabel:

   266 				for (int i=0;i<arcsegs;i++)

   267 				{

   268 					cl = scene->addLine(QLineF(i*5,0,i*10,100),pen);

   269 					cl->setZValue(Z_LINK);

   270 					if (visible)

   271 						cl->show();

   272 					else

   273 						cl->hide();

   274 					segment.append(cl);

   275 				}

   276 				pa0.resize (arcsegs+1);

   277 				break;

   278 			case PolyLine:	

   279 				p =scene->addPolygon(QPolygonF(),pen,linkcolor);

   280 				p->setZValue(Z_LINK);

   281 				if (visible)

   282 					p->show();

   283 				else

   284 					p->hide();

   285 				pa0.resize (3);

   286 				break;

   287 			case PolyParabel:	

   288 				p = scene->addPolygon(QPolygonF(),pen,linkcolor);

   289 				p->setZValue(Z_LINK);

   290 				if (visible)

   291 					p->show();

   292 				else

   293 					p->hide();

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

   295 				pa1.resize (arcsegs+1);

   296 				pa2.resize (arcsegs+1);

   297 				break;

   298 			default: 

   299 				break;	

   300 		}	

   301 	} 

   302 }

   303 

   304 LinkableMapObj::Style LinkableMapObj::getLinkStyle()

   305 {

   306 	return style;

   307 }

   308 

   309 void LinkableMapObj::setHideLinkUnselected(bool b)

   310 {

   311 	hideLinkUnselected=b;

   312 	setVisibility (visible);

   313 	updateLink();

   314 }

   315 

   316 bool LinkableMapObj::getHideLinkUnselected()

   317 {

   318 	return hideLinkUnselected;

   319 }

   320 

   321 void LinkableMapObj::setLinkPos(Position lp)

   322 {

   323 	linkpos=lp;

   324 }

   325 

   326 LinkableMapObj::Position LinkableMapObj::getLinkPos()

   327 {

   328 	return linkpos;

   329 }

   330 

   331 void LinkableMapObj::setLinkColor()

   332 {

   333 	// Overloaded in BranchObj and children

   334 	// here only set default color

   335 	if (model)

   336 		setLinkColor (model->getMapDefLinkColor());

   337 }

   338 

   339 void LinkableMapObj::setLinkColor(QColor col)

   340 {

   341 	linkcolor=col;

   342 	pen.setColor(col);

   343     bottomline->setPen( pen );

   344 	switch (style)

   345 	{

   346 		case Line:

   347 			l->setPen( pen);

   348 			break;	

   349 		case Parabel:	

   350 			for (int i=0; i<segment.size(); ++i)

   351 				segment.at(i)->setPen( pen);

   352 			break;

   353 		case PolyLine:

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

   355 			p->setPen( pen);

   356 			break;

   357 		case PolyParabel:	

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

   359 			p->setPen( pen);

   360 			break;

   361 		default:

   362 			break;

   363 	} 

   364 }

   365 

   366 QColor LinkableMapObj::getLinkColor()

   367 {

   368 	return linkcolor;

   369 }

   370 

   371 void LinkableMapObj::setVisibility (bool v)

   372 {

   373 	MapObj::setVisibility (v);

   374 	bool visnow=visible;

   375 

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

   377 	if (hideLinkUnselected && !selected)

   378 		visnow=false;

   379 

   380 	if (visnow) 

   381 	{

   382 		bottomline->show();

   383 		switch (style)

   384 		{

   385 			case Line:

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

   387 				break;

   388 			case Parabel:	

   389 				for (int i=0; i<segment.size(); ++i)

   390 					segment.at(i)->show();

   391 				break;	

   392 			case PolyLine:

   393 				if (!p) cout << "LMO::setVis p==0 (PolyLine)\n"; //FIXME-3

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

   395 				break;

   396 			case PolyParabel:	

   397 				if (!p) cout << "LMO::setVis p==0 (PolyParabel) "<<treeItem->getHeading().toStdString()<<endl; //FIXME-3

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

   399 				break;

   400 			default:

   401 				break;

   402 		}

   403 	} else 

   404 	{

   405 		bottomline->hide();

   406 		switch (style)

   407 		{

   408 			case Line:

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

   410 				break;

   411 			case Parabel:	

   412 				for (int i=0; i<segment.size(); ++i)

   413 					segment.at(i)->hide();

   414 				break;	

   415 			case PolyLine:

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

   417 				break;

   418 			case PolyParabel:	

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

   420 				break;

   421 			default:

   422 				break;

   423 		}

   424 	}	

   425 }

   426 

   427 void LinkableMapObj::setOrientation()

   428 {

   429 	Orientation orientOld=orientation;

   430 

   431 	if (!parObj) 

   432 	{

   433 		orientation=UndefinedOrientation;

   434 		return;

   435 	}

   436 		

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

   438     if (parObj->getOrientation() != UndefinedOrientation ) 

   439 		// use the orientation of the parent:

   440 		orientation=parObj->getOrientation();

   441     else

   442     {

   443 		// calc orientation depending on position rel to parent

   444 		if (absPos.x() < QPointF(parObj->getChildPos() ).x() )

   445 			orientation=LeftOfCenter; 

   446 		else

   447 			orientation=RightOfCenter;

   448     }

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

   450 }

   451 

   452 void LinkableMapObj::updateLink()

   453 {

   454     // needs:

   455     //	childPos of parent

   456     //	orient   of parent

   457     //	style

   458     // 

   459     // sets:

   460     //	orientation

   461     //	childPos	(by calling setDockPos())

   462     //	parPos		(by calling setDockPos())

   463 	//  bottomlineY

   464     //	drawing of the link itself

   465 

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

   467 	// have parents yet...

   468 	if (style==UndefinedStyle) return;	

   469 

   470 	switch (linkpos)

   471 	{

   472 		case Middle:

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

   474 			break;

   475 		case Bottom:

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

   477 			break;

   478 	}

   479 	

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

   481 	if (!link2ParPos)

   482 	{

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

   484 		p2y=QPointF( parObj->getChildPos() ).y();	// orientation

   485 	} else	

   486 	{

   487 		p2x=QPointF( parObj->getParPos() ).x();	

   488 		p2y=QPointF( parObj->getParPos() ).y();

   489 	} 

   490 

   491 	setDockPos(); // Call overloaded method

   492 	setOrientation();

   493 

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

   495 	double p1y=parPos.y();

   496 

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

   498 	double vy=p2y - p1y;

   499 

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

   501 	//bottomline->prepareGeometryChange();

   502 	bottomline->setLine (QLine (qRound(childPos.x()),

   503 		qRound(childPos.y()),

   504 		qRound(p1x),

   505 		qRound(p1y) ));

   506 

   507 	double a;	// angle

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

   509 		a=M_PI_2;

   510 	else

   511 		a=atan( vy / vx );

   512 	// "turning point" for drawing polygonal links

   513 	QPointF tp (-qRound(sin (a)*thickness_start), qRound(cos (a)*thickness_start));	

   514 	

   515     // Draw the link

   516 	switch (style)

   517 	{

   518 		case Line:

   519 			//l->prepareGeometryChange();

   520 			l->setLine( QLine(qRound (parPos.x()),

   521 				qRound(parPos.y()),

   522 				qRound(p2x),

   523 				qRound(p2y) ));

   524 			break;	

   525 		case Parabel:	

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

   527 			for (int i=0; i<segment.size(); ++i)

   528 			{

   529 				//segment.at(i)->prepareGeometryChange();

   530 				segment.at(i)->setLine(QLineF( pa0.at(i).x(), pa0.at(i).y(),pa0.at(i+1).x(),pa0.at(i+1).y()));

   531 			}	

   532 			break;

   533 		case PolyLine:

   534 			pa0.clear();

   535 			pa0<<QPointF (qRound(p2x+tp.x()), qRound(p2y+tp.y()));

   536 			pa0<<QPointF (qRound(p2x-tp.x()), qRound(p2y-tp.y()));

   537 			pa0<<QPointF (qRound (parPos.x()), qRound(parPos.y()) );

   538 			//p->prepareGeometryChange();

   539 			p->setPolygon(QPolygonF (pa0));

   540 			break;

   541 		case PolyParabel:	

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

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

   544 			pa0.clear();

   545 			for (int i=0;i<=arcsegs;i++)

   546 				pa0 << QPointF (pa1.at(i));

   547 			for (int i=0;i<=arcsegs;i++)

   548 				pa0 << QPointF (pa2.at(arcsegs-i));

   549 			//p->prepareGeometryChange();

   550 			p->setPolygon(QPolygonF (pa0));

   551 			break;

   552 		default:

   553 			break;

   554 	} // switch (style)	

   555 }

   556 	

   557 LinkableMapObj* LinkableMapObj::getChildObj()

   558 {

   559     return childObj;

   560 }

   561 

   562 LinkableMapObj* LinkableMapObj::getParObj()

   563 {

   564     return parObj;

   565 }

   566 

   567 QPointF LinkableMapObj::getChildPos()

   568 {

   569     return childPos;

   570 }

   571 

   572 QPointF LinkableMapObj::getParPos()

   573 {

   574     return parPos;

   575 }

   576 

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

   578 {	

   579 	if (useOrientation!=b)

   580 	{

   581 		useOrientation=b;

   582 		requestReposition();

   583 	}	

   584 }

   585 

   586 LinkableMapObj::Orientation LinkableMapObj::getOrientation()

   587 {

   588     return orientation;

   589 }

   590 

   591 QPointF LinkableMapObj::getRandPos()

   592 {

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

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

   595     return QPointF ( (int)( + 150*cos (a)),

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

   597 }

   598 

   599 void LinkableMapObj::reposition()

   600 {

   601 }

   602 

   603 void LinkableMapObj::requestReposition()

   604 {

   605 	if (!repositionRequest)

   606 	{

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

   608 		// been done yet

   609 		repositionRequest=true;

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

   611 	}

   612 }

   613 

   614 void LinkableMapObj::forceReposition()

   615 {

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

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

   618 	// which could collect requests for a reposition.

   619 	// Then we have to call forceReposition()

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

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

   622 	// the end, thus check first:

   623 

   624 	if (model->isRepositionBlocked()) return;	

   625 	

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

   627 	if (parObj) 

   628 		parObj->forceReposition(); 

   629 	else 

   630 		reposition(); 

   631 }

   632 

   633 bool LinkableMapObj::repositionRequested()

   634 {

   635 	return repositionRequest;

   636 }

   637 

   638 

   639 void LinkableMapObj::select()

   640 {

   641 	// select and unselect are still needed to

   642 	// handle hiding of links

   643     selected=true;

   644 	setVisibility (visible);

   645 }

   646 

   647 

   648 void LinkableMapObj::unselect()

   649 {

   650     selected=false;

   651 	// Maybe we have to hide the link:

   652 	setVisibility (visible);

   653 }

   654 

   655 void LinkableMapObj::parabel (QPolygonF &ya, double p1x, double p1y, double p2x, double p2y)

   656 

   657 {

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

   659 	double vy=p2y - p1y;

   660 

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

   662 	

   663 	double pnx;				// next point

   664 	double pny;

   665 	double m;

   666 

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

   668 		m=0;

   669 	else	

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

   671 	dx=vx/(arcsegs);

   672 	ya.clear();

   673 	ya<<QPointF (p1x,p1y);

   674 	for (int i=1;i<=arcsegs;i++)

   675 	{	

   676 		pnx=p1x+dx;

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

   678 		ya<<QPointF (pnx,pny);

   679 		p1x=pnx;

   680 		p1y=pny;

   681 	}	

   682 }

   683 

   684 QString LinkableMapObj::getLinkAttr ()

   685 {

   686 	if (hideLinkUnselected)

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

   688 	else

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

   690 	

   691 }

   692
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