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linkablemapobj.cpp
author insilmaril
Wed Apr 25 16:02:54 2007 +0000 (2007-04-25)
changeset 463 694f5e35e87c
parent 427 fb74fa7bfb4c
child 473 8b9cfc26638c
permissions -rw-r--r--
started doxygen documentation 
     1 #include <math.h>

     2 

     3 #include "linkablemapobj.h"

     4 #include "branchobj.h"

     5 #include "mapeditor.h"

     6 

     7 /////////////////////////////////////////////////////////////////

     8 // LinkableMapObj

     9 /////////////////////////////////////////////////////////////////

    10 

    11 LinkableMapObj::LinkableMapObj():MapObj()

    12 {

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

    14     init ();

    15 }

    16 

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

    18 {

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

    20     init ();

    21 }

    22 

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

    24 {

    25     copy (lmo);

    26 }

    27 

    28 LinkableMapObj::~LinkableMapObj()

    29 {

    30     delete (bottomline);

    31 	delLink();

    32 }

    33 

    34 void LinkableMapObj::delLink()

    35 {

    36 	switch (style)

    37 	{

    38 		case StyleLine:

    39 			delete (l);

    40 			break;

    41 		case StyleParabel:

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

    43 			break;

    44 		case StylePolyLine:

    45 			delete (p);

    46 			break;

    47 		case StylePolyParabel:

    48 			delete (p);

    49 			break;

    50 		default:

    51 			break;

    52 	}		

    53 }

    54 

    55 void LinkableMapObj::init ()

    56 {

    57     depth=-1;	

    58 	mapEditor=NULL;

    59     childObj=NULL;

    60     parObj=NULL;

    61     parObjTmpBuf=NULL;

    62     parPos=QPointF(0,0);

    63     childPos=QPointF(0,0);

    64 	link2ParPos=false;

    65     l=NULL;

    66     orientation=OrientUndef;

    67     linkwidth=20;		

    68 	thickness_start=8;

    69     style=StyleUndef;

    70 	linkpos=LinkBottom;

    71     arcsegs=13;

    72     

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

    74 	pen.setWidth (1);

    75 	pen.setColor (linkcolor);

    76 	pen.setCapStyle ( Qt::RoundCap );

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

    78     bottomline->setZValue(Z_LINK);

    79     bottomline->show();

    80 

    81     // Prepare showing the selection of a MapObj

    82     selected=false;

    83 

    84 	hideLinkUnselected=false;

    85 

    86 	topPad=botPad=leftPad=rightPad=0;

    87 

    88 	repositionRequest=false;

    89 

    90 	// Rel Positions

    91 	relPos=QPointF(0,0);

    92 	useRelPos=false;

    93 	useOrientation=true;

    94 }

    95 

    96 void LinkableMapObj::copy (LinkableMapObj* other)

    97 {

    98     MapObj::copy(other);

    99 	bboxTotal=other->bboxTotal;

   100     setLinkStyle(other->style);

   101     setLinkColor (other->linkcolor);

   102 	relPos=other->relPos;

   103 	useOrientation=other->useOrientation;

   104 

   105 }

   106 

   107 void LinkableMapObj::setChildObj(LinkableMapObj* o)

   108 {

   109     childObj=o;

   110 }

   111 

   112 void LinkableMapObj::setParObj(LinkableMapObj* o)

   113 {

   114     parObj=o;

   115 	mapEditor=parObj->getMapEditor();

   116 }

   117 

   118 void LinkableMapObj::setParObjTmp(LinkableMapObj*,QPointF,int)

   119 {

   120 }

   121 

   122 void LinkableMapObj::unsetParObjTmp()

   123 {

   124 }

   125 

   126 bool LinkableMapObj::hasParObjTmp()

   127 {

   128 	if (parObjTmpBuf) return true;

   129 	return false;

   130 }

   131 

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

   133 {

   134 	useRelPos=b;

   135 }

   136 

   137 void LinkableMapObj::setRelPos()

   138 {

   139 	if (parObj)

   140 	{	

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

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

   143 		parObj->calcBBoxSize();

   144 	}	else

   145 	{

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

   147 	}

   148 }

   149 

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

   151 {

   152 	relPos=p;

   153 	if (parObj)

   154 	{		

   155 		parObj->calcBBoxSize();

   156 		requestReposition();

   157 	}	else

   158 	{

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

   160 	}

   161 }

   162 

   163 QPointF LinkableMapObj::getRelPos()

   164 {

   165 	if (!parObj) return QPointF();

   166 	return relPos;

   167 }

   168 

   169 qreal LinkableMapObj::getTopPad()

   170 {

   171 	return topPad;

   172 }

   173 

   174 qreal LinkableMapObj::getLeftPad()

   175 {

   176 	return leftPad;

   177 }

   178 

   179 qreal LinkableMapObj::getRightPad()

   180 {

   181 	return rightPad;

   182 }

   183 

   184 LinkStyle LinkableMapObj::getDefLinkStyle ()

   185 {

   186 	if (mapEditor==0) return StyleUndef;

   187 	LinkStyle ls=mapEditor->getMapLinkStyle();

   188 	switch (ls)

   189 	{

   190 		case StyleLine: 

   191 			return ls;

   192 			break;

   193 		case StyleParabel:

   194 			return ls;

   195 			break;

   196 		case StylePolyLine:	

   197 			if (depth>1)

   198 				return StyleLine;

   199 			else	

   200 				return ls;

   201 			break;

   202 		case StylePolyParabel:	

   203 			if (depth>1)

   204 				return StyleParabel;

   205 			else	

   206 				return ls;

   207 			break;

   208 		default: 

   209 			break;	

   210 	}	

   211 	return StyleUndef;

   212 }

   213 

   214 void LinkableMapObj::setLinkStyle(LinkStyle newstyle)

   215 {

   216 	//if (newstyle=style) return;

   217 	delLink();

   218 		

   219 	style=newstyle;

   220 

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

   222     {

   223 		QGraphicsLineItem *cl;

   224 		switch (style)

   225 		{

   226 			case StyleUndef:

   227 				bottomline->hide();

   228 				break;

   229 			case StyleLine: 

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

   231 				l->setZValue(Z_LINK);

   232 				if (visible)

   233 					l->show();

   234 				else

   235 					l->hide();

   236 				break;

   237 			case StyleParabel:

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

   239 				{

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

   241 					cl->setZValue(Z_LINK);

   242 					if (visible)

   243 						cl->show();

   244 					else

   245 						cl->hide();

   246 					segment.append(cl);

   247 				}

   248 				pa0.resize (arcsegs+1);

   249 				break;

   250 			case StylePolyLine:	

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

   252 				p->setZValue(Z_LINK);

   253 				if (visible)

   254 					p->show();

   255 				else

   256 					p->hide();

   257 				pa0.resize (3);

   258 				break;

   259 			case StylePolyParabel:	

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

   261 				p->setZValue(Z_LINK);

   262 				if (visible)

   263 					p->show();

   264 				else

   265 					p->hide();

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

   267 				pa1.resize (arcsegs+1);

   268 				pa2.resize (arcsegs+1);

   269 				break;

   270 			default: 

   271 				break;	

   272 		}	

   273 	} 

   274 }

   275 

   276 LinkStyle LinkableMapObj::getLinkStyle()

   277 {

   278 	return style;

   279 }

   280 

   281 void LinkableMapObj::setHideLinkUnselected(bool b)

   282 {

   283 	hideLinkUnselected=b;

   284 	setVisibility (visible);

   285 	updateLink();

   286 }

   287 

   288 bool LinkableMapObj::getHideLinkUnselected()

   289 {

   290 	return hideLinkUnselected;

   291 }

   292 

   293 void LinkableMapObj::setLinkPos(LinkPos lp)

   294 {

   295 	linkpos=lp;

   296 }

   297 

   298 LinkPos LinkableMapObj::getLinkPos()

   299 {

   300 	return linkpos;

   301 }

   302 

   303 

   304 void LinkableMapObj::setLinkColor()

   305 {

   306 	// Overloaded in BranchObj and childs

   307 	// here only set default color

   308 	if (mapEditor)

   309 		setLinkColor (mapEditor->getMapDefLinkColor());

   310 }

   311 

   312 void LinkableMapObj::setLinkColor(QColor col)

   313 {

   314 	linkcolor=col;

   315 	pen.setColor(col);

   316     bottomline->setPen( pen );

   317 	switch (style)

   318 	{

   319 		case StyleLine:

   320 			l->setPen( pen);

   321 			break;	

   322 		case StyleParabel:	

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

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

   325 			break;

   326 		case StylePolyLine:

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

   328 			break;

   329 		case StylePolyParabel:	

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

   331 			break;

   332 		default:

   333 			break;

   334 	} // switch (style)	

   335 }

   336 

   337 QColor LinkableMapObj::getLinkColor()

   338 {

   339 	return linkcolor;

   340 }

   341 

   342 void LinkableMapObj::setVisibility (bool v)

   343 {

   344 	MapObj::setVisibility (v);

   345 	bool visnow=visible;

   346 

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

   348 	if (hideLinkUnselected && !selected)

   349 		visnow=false;

   350 

   351 	if (visnow) 

   352 	{

   353 		bottomline->show();

   354 		switch (style)

   355 		{

   356 			case StyleLine:

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

   358 				break;

   359 			case StyleParabel:	

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

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

   362 				break;	

   363 			case StylePolyLine:

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

   365 				break;

   366 			case StylePolyParabel:	

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

   368 				break;

   369 			default:

   370 				break;

   371 		}

   372 	} else 

   373 	{

   374 		bottomline->hide();

   375 		switch (style)

   376 		{

   377 			case StyleLine:

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

   379 				break;

   380 			case StyleParabel:	

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

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

   383 				break;	

   384 			case StylePolyLine:

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

   386 				break;

   387 			case StylePolyParabel:	

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

   389 				break;

   390 			default:

   391 				break;

   392 		}

   393 	}	

   394 }

   395 

   396 void LinkableMapObj::setOrientation()

   397 {

   398 	LinkOrient orientOld=orientation;

   399 

   400 	if (!parObj) 

   401 	{

   402 		orientation=OrientUndef;

   403 		return;

   404 	}

   405 		

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

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

   408 		// use the orientation of the parent:

   409 		orientation=parObj->getOrientation();

   410     else

   411     {

   412 		// calc orientation depending on position rel to parent

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

   414 			orientation=OrientLeftOfCenter; 

   415 		else

   416 			orientation=OrientRightOfCenter;

   417     }

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

   419 }

   420 

   421 void LinkableMapObj::updateLink()

   422 {

   423     // needs:

   424     //	childPos of parent

   425     //	orient   of parent

   426     //	style

   427     // 

   428     // sets:

   429     //	orientation

   430     //	childPos	(by calling setDockPos())

   431     //	parPos		(by calling setDockPos())

   432 	//  bottomlineY

   433     //	drawing of the link itself

   434 

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

   436 	// have parents yet...

   437 	if (style==StyleUndef) return;	

   438 

   439 	switch (linkpos)

   440 	{

   441 		case LinkMiddle:

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

   443 			break;

   444 		case LinkBottom:

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

   446 			break;

   447 	}

   448 	

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

   450 	if (!link2ParPos)

   451 	{

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

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

   454 	} else	

   455 	{

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

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

   458 	} 

   459 

   460 	setDockPos(); // Call overloaded method

   461 	setOrientation();

   462 

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

   464 	double p1y=parPos.y();

   465 

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

   467 	double vy=p2y - p1y;

   468 

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

   470 	//bottomline->prepareGeometryChange();

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

   472 		qRound(childPos.y()),

   473 		qRound(p1x),

   474 		qRound(p1y) ));

   475 

   476 	double a;	// angle

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

   478 		a=M_PI_2;

   479 	else

   480 		a=atan( vy / vx );

   481 	// "turning point" for drawing polygonal links

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

   483 	

   484     // Draw the link

   485 	switch (style)

   486 	{

   487 		case StyleLine:

   488 			//l->prepareGeometryChange();

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

   490 				qRound(parPos.y()),

   491 				qRound(p2x),

   492 				qRound(p2y) ));

   493 			break;	

   494 		case StyleParabel:	

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

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

   497 			{

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

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

   500 			}	

   501 			break;

   502 		case StylePolyLine:

   503 			pa0.clear();

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

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

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

   507 			//p->prepareGeometryChange();

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

   509 			break;

   510 		case StylePolyParabel:	

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

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

   513 			pa0.clear();

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

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

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

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

   518 			//p->prepareGeometryChange();

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

   520 			break;

   521 		default:

   522 			break;

   523 	} // switch (style)	

   524 }

   525 	

   526 LinkableMapObj* LinkableMapObj::getChildObj()

   527 {

   528     return childObj;

   529 }

   530 

   531 LinkableMapObj* LinkableMapObj::getParObj()

   532 {

   533     return parObj;

   534 }

   535 

   536 LinkableMapObj* LinkableMapObj::findObjBySelect (QString s)

   537 {

   538 	LinkableMapObj *lmo=this;

   539 	QString part;

   540 	QString typ;

   541 	QString num;

   542 	while (!s.isEmpty() )

   543 	{

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

   545 		typ=part.left (3);

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

   547 		if (typ=="mc:")

   548 		{

   549 			if (depth>0)

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

   551 			else

   552 				break;

   553 		} else

   554 			if (typ=="bo:")

   555 				lmo=((BranchObj*)(lmo))->getBranchNum (num.toInt());

   556 			else

   557 				if (typ=="fi:")

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

   559 		if (!lmo) break;

   560 		

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

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

   563 		else	

   564 			break;

   565 	}

   566 	return lmo;

   567 }

   568 

   569 QPointF LinkableMapObj::getChildPos()

   570 {

   571     return childPos;

   572 }

   573 

   574 QPointF LinkableMapObj::getParPos()

   575 {

   576     return parPos;

   577 }

   578 

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

   580 {	

   581 	if (useOrientation!=b)

   582 	{

   583 		useOrientation=b;

   584 		requestReposition();

   585 	}	

   586 }

   587 

   588 LinkOrient LinkableMapObj::getOrientation()

   589 {

   590     return orientation;

   591 }

   592 

   593 int LinkableMapObj::getDepth()

   594 {

   595     return depth;

   596 }

   597 

   598 void LinkableMapObj::setMapEditor (MapEditor *me)

   599 {

   600 	mapEditor=me;

   601 }

   602 

   603 MapEditor* LinkableMapObj::getMapEditor ()

   604 {

   605 	return mapEditor;

   606 }

   607 

   608 QPointF LinkableMapObj::getRandPos()

   609 {

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

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

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

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

   614 }

   615 

   616 void LinkableMapObj::reposition()

   617 {

   618 }

   619 

   620 void LinkableMapObj::requestReposition()

   621 {

   622 	if (!repositionRequest)

   623 	{

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

   625 		// been done yet

   626 		repositionRequest=true;

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

   628 	}

   629 }

   630 

   631 void LinkableMapObj::forceReposition()

   632 {

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

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

   635 	// which could collect requests for a reposition.

   636 	// Then we have to call forceReposition()

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

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

   639 	// the end, thus check first:

   640 

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

   642 	

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

   644 	

   645 	if (parObj) 

   646 		parObj->forceReposition(); 

   647 	else 

   648 		reposition(); 

   649 }

   650 

   651 bool LinkableMapObj::repositionRequested()

   652 {

   653 	return repositionRequest;

   654 }

   655 

   656 

   657 void LinkableMapObj::select()

   658 {

   659     selected=true;

   660 	setVisibility (visible);

   661 }

   662 

   663 

   664 void LinkableMapObj::unselect()

   665 {

   666     selected=false;

   667 	// Maybe we have to hide the link:

   668 	setVisibility (visible);

   669 }

   670 

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

   672 

   673 {

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

   675 	double vy=p2y - p1y;

   676 

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

   678 	

   679 	double pnx;				// next point

   680 	double pny;

   681 	double m;

   682 

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

   684 		m=0;

   685 	else	

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

   687 	dx=vx/(arcsegs);

   688 	ya.clear();

   689 	ya<<QPointF (qRound(p1x),qRound(p1y));

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

   691 	{	

   692 		pnx=p1x+dx;

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

   694 		ya<<QPointF (qRound(pnx),qRound(pny));

   695 		p1x=pnx;

   696 		p1y=pny;

   697 	}	

   698 }

   699 

   700 QString LinkableMapObj::getLinkAttr ()

   701 {

   702 	if (hideLinkUnselected)

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

   704 	else

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

   706 	

   707 }
vym