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linkablemapobj.cpp
author insilmaril
Wed, 25 Nov 2009 10:58:21 +0000
changeset 807 f9f7922989d8
parent 798 d251c7b2de54
child 816 3086ee01554a
permissions -rw-r--r--
Added demos/vym-contribute.vym, fixes for selecting items 
     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 /* FIXME-3

    15 LinkableMapObj::LinkableMapObj():MapObj()

    16 {

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

    18     init ();

    19 }

    20 */

    21 

    22 LinkableMapObj::LinkableMapObj(QGraphicsScene* s, TreeItem *ti) :MapObj(s,ti)

    23 {

    24 //    cout << "Const LinkableMapObj s="<<s<<"  ti="<<ti<<"  treeItem="<<treeItem<<endl;

    25     init ();

    26 }

    27 

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

    29 {

    30     copy (lmo);

    31 }

    32 

    33 LinkableMapObj::~LinkableMapObj()

    34 {

    35 	//cout << "Destructor LMO\n";

    36     delete (bottomline);

    37 	delLink();

    38 }

    39 

    40 void LinkableMapObj::delLink()

    41 {

    42 	//bottomline->hide();

    43 	switch (style)

    44 	{

    45 		case Line:

    46 			delete (l);

    47 			break;

    48 		case Parabel:

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

    50 			break;

    51 		case PolyLine:

    52 			delete (p);

    53 			break;

    54 		case PolyParabel:

    55 			delete (p);

    56 			break;

    57 		default:

    58 			break;

    59 	}		

    60 }

    61 

    62 void LinkableMapObj::init ()

    63 {

    64     parObj=NULL;

    65     parObjTmpBuf=NULL;

    66 	tmpParent=false;

    67     parPos=QPointF(0,0);

    68     childPos=QPointF(0,0);

    69 	link2ParPos=false;

    70     l=NULL;

    71 	p=NULL;

    72     orientation=UndefinedOrientation;

    73     linkwidth=20;		

    74 	thickness_start=8;

    75     style=UndefinedStyle;

    76 	linkpos=Bottom;

    77     arcsegs=13;

    78     

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

    80 	pen.setWidth (1);

    81 	pen.setColor (linkcolor);

    82 	pen.setCapStyle ( Qt::RoundCap );

    83 

    84 	useBottomline=true;

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

    86     bottomline->setZValue(Z_LINK);

    87     bottomline->show();

    88 

    89 	topPad=botPad=leftPad=rightPad=0;

    90 

    91 	repositionRequest=false;

    92 

    93 	// Rel Positions

    94 	relPos=QPointF(0,0);

    95 	useRelPos=false;

    96 }

    97 

    98 void LinkableMapObj::copy (LinkableMapObj* other)

    99 {

   100     MapObj::copy(other);

   101 	bboxTotal=other->bboxTotal;

   102     setLinkStyle(other->style);

   103     setLinkColor (other->linkcolor);

   104 	relPos=other->relPos;

   105 	treeItem=other->treeItem;

   106 }

   107 

   108 void LinkableMapObj::setParObj(LinkableMapObj* o)

   109 {

   110     parObj=o;

   111 }

   112 

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

   114 {

   115 }

   116 

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

   118 {

   119 }

   120 

   121 bool LinkableMapObj::hasParObjTmp()

   122 {

   123 	return tmpParent;

   124 }

   125 

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

   127 {

   128 	useRelPos=b;

   129 }

   130 

   131 void LinkableMapObj::setRelPos()

   132 {

   133 	if (parObj)

   134 	{	

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

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

   137 		parObj->calcBBoxSize();

   138 	}	

   139 }

   140 

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

   142 {

   143 	relPos=p;

   144 	if (parObj)

   145 	{		

   146 		parObj->calcBBoxSize();

   147 		requestReposition();

   148 	}

   149 }

   150 

   151 QPointF LinkableMapObj::getRelPos()

   152 {

   153 	if (!parObj) return QPointF();

   154 	return relPos;

   155 }

   156 

   157 qreal LinkableMapObj::getTopPad()

   158 {

   159 	return topPad;

   160 }

   161 

   162 qreal LinkableMapObj::getLeftPad()

   163 {

   164 	return leftPad;

   165 }

   166 

   167 qreal LinkableMapObj::getRightPad()

   168 {

   169 	return rightPad;

   170 }

   171 

   172 LinkableMapObj::Style LinkableMapObj::getDefLinkStyle (TreeItem *parent)

   173 {

   174 	VymModel *model=treeItem->getModel();

   175 	if (!model)

   176 	{

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

   178 		//return UndefinedStyle;

   179 	}

   180 	Style ls=model->getMapLinkStyle();

   181 	int depth=1+parent->depth();

   182 	if (depth==0) return UndefinedStyle;

   183 	switch (ls)

   184 	{

   185 		case Line: 

   186 			return ls;

   187 			break;

   188 		case Parabel:

   189 			return ls;

   190 			break;

   191 		case PolyLine:	

   192 			if (depth>1)

   193 				return Line;

   194 			else	

   195 				return ls;

   196 			break;

   197 		case PolyParabel:	

   198 			if (depth>1)

   199 				return Parabel;

   200 			else	

   201 				return ls;

   202 			break;

   203 		default: 

   204 			break;	

   205 	}	

   206 	return UndefinedStyle;

   207 }

   208 

   209 void LinkableMapObj::setLinkStyle(Style newstyle)

   210 {

   211 	delLink();

   212 		

   213 	style=newstyle;

   214 

   215     if (parObj != NULL)

   216     {

   217 		QGraphicsLineItem *cl;

   218 		switch (style)

   219 		{

   220 			case UndefinedStyle:

   221 				bottomline->hide();

   222 				break;

   223 			case Line: 

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

   225 				l->setZValue(Z_LINK);

   226 				if (visible)

   227 					l->show();

   228 				else

   229 					l->hide();

   230 				break;

   231 			case Parabel:

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

   233 				{

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

   235 					cl->setZValue(Z_LINK);

   236 					if (visible)

   237 						cl->show();

   238 					else

   239 						cl->hide();

   240 					segment.append(cl);

   241 				}

   242 				pa0.resize (arcsegs+1);

   243 				break;

   244 			case PolyLine:	

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

   246 				p->setZValue(Z_LINK);

   247 				if (visible)

   248 					p->show();

   249 				else

   250 					p->hide();

   251 				pa0.resize (3);

   252 				break;

   253 			case PolyParabel:	

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

   255 				p->setZValue(Z_LINK);

   256 				if (visible)

   257 					p->show();

   258 				else

   259 					p->hide();

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

   261 				pa1.resize (arcsegs+1);

   262 				pa2.resize (arcsegs+1);

   263 				break;

   264 			default: 

   265 				break;	

   266 		}	

   267 	} 

   268 }

   269 

   270 LinkableMapObj::Style LinkableMapObj::getLinkStyle()

   271 {

   272 	return style;

   273 }

   274 

   275 void LinkableMapObj::setHideLinkUnselected()

   276 {

   277 	setVisibility (visible);

   278 	updateLinkGeometry();

   279 }

   280 

   281 void LinkableMapObj::setLinkPos(Position lp)

   282 {

   283 	linkpos=lp;

   284 }

   285 

   286 LinkableMapObj::Position LinkableMapObj::getLinkPos()

   287 {

   288 	return linkpos;

   289 }

   290 

   291 void LinkableMapObj::setLinkColor()

   292 {

   293 	// Overloaded in BranchObj and children

   294 	// here only set default color

   295 	VymModel *model=treeItem->getModel();

   296 	if (model)

   297 		setLinkColor (model->getMapDefLinkColor());

   298 }

   299 

   300 void LinkableMapObj::setLinkColor(QColor col)

   301 {

   302 	linkcolor=col;

   303 	pen.setColor(col);

   304     bottomline->setPen( pen );

   305 	switch (style)

   306 	{

   307 		case Line:

   308 			l->setPen( pen);

   309 			break;	

   310 		case Parabel:	

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

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

   313 			break;

   314 		case PolyLine:

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

   316 			p->setPen( pen);

   317 			break;

   318 		case PolyParabel:	

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

   320 			p->setPen( pen);

   321 			break;

   322 		default:

   323 			break;

   324 	} 

   325 }

   326 

   327 QColor LinkableMapObj::getLinkColor()

   328 {

   329 	return linkcolor;

   330 }

   331 

   332 void LinkableMapObj::setVisibility (bool v)

   333 {

   334 	MapObj::setVisibility (v);

   335 	updateVisibility();

   336 }

   337 

   338 void LinkableMapObj::setOrientation()

   339 {

   340 	Orientation orientOld=orientation;

   341 

   342 	if (!parObj) 

   343 	{

   344 		orientation=UndefinedOrientation;

   345 		return;

   346 	}

   347 		

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

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

   350 		// use the orientation of the parent:

   351 		orientation=parObj->getOrientation();

   352     else

   353     {

   354 		// calc orientation depending on position rel to parent

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

   356 			orientation=LeftOfCenter; 

   357 		else

   358 			orientation=RightOfCenter;

   359     }

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

   361 }

   362 

   363 void LinkableMapObj::updateVisibility()

   364 {

   365 	bool visnow=visible;

   366 

   367 	if (((MapItem*)treeItem)->getHideLinkUnselected()

   368 		&& treeItem->getModel()->getSelectedLMO() !=this)

   369 		visnow=false;

   370 

   371 	if (visnow) 

   372 	{

   373 		if (useBottomline)

   374 			bottomline->show();

   375 		else	

   376 			bottomline->hide();

   377 

   378 		switch (style)

   379 		{

   380 			case Line:

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

   382 				break;

   383 			case Parabel:	

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

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

   386 				break;	

   387 			case PolyLine:

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

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

   390 				break;

   391 			case PolyParabel:	

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

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

   394 				break;

   395 			default:

   396 				break;

   397 		}

   398 	} else 

   399 	{

   400 		bottomline->hide();

   401 		switch (style)

   402 		{

   403 			case Line:

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

   405 				break;

   406 			case Parabel:	

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

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

   409 				break;	

   410 			case PolyLine:

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

   412 				break;

   413 			case PolyParabel:	

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

   415 				break;

   416 			default:

   417 				break;

   418 		}

   419 	}	

   420 }

   421 

   422 void LinkableMapObj::updateLinkGeometry()

   423 {

   424     // needs:

   425     //	childPos of parent

   426     //	orient   of parent

   427     //	style

   428     // 

   429     // sets:

   430     //	orientation

   431     //	childPos	(by calling setDockPos())

   432     //	parPos		(by calling setDockPos())

   433 	//  bottomlineY

   434     //	drawing of the link itself

   435 

   436 	// updateLinkGeometry is called from move, but called from constructor we don't

   437 	// have parents yet...

   438 

   439 //cout <<"LMO::updateLinkGeometry: "<<treeItem->getHeadingStd()<<"  "<<parObj<<endl;

   440 	if (!parObj)	

   441 	{

   442 		// If I am a mapcenter, set childPos to middle of MapCenterObj

   443 		childPos.setX( clickBox.topLeft().x() + clickBox.width()/2 );

   444 		childPos.setY( clickBox.topLeft().y() + clickBox.height()/2 );

   445 		parPos=childPos;		

   446 		// Redraw links to children

   447 		for (int i=0; i<treeItem->branchCount(); ++i)

   448 			treeItem->getBranchObjNum(i)->updateLinkGeometry();

   449 		return;	

   450 	}

   451 

   452 	if (style==UndefinedStyle) return;	

   453 

   454 	switch (linkpos)

   455 	{

   456 		case Middle:

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

   458 			break;

   459 		case Bottom:

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

   461 			bottomlineY=bbox.bottom()-botPad;

   462 			break;

   463 	}

   464 	

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

   466 	if (!link2ParPos)

   467 	{

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

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

   470 	} else	

   471 	{

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

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

   474 	} 

   475 

   476 	setDockPos(); // Call overloaded method

   477 	setOrientation();

   478 

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

   480 	double p1y=parPos.y();

   481 

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

   483 	double vy=p2y - p1y;

   484 

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

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

   487 		qRound(childPos.y()),

   488 		qRound(p1x),

   489 		qRound(p1y) ));

   490 

   491 	double a;	// angle

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

   493 		a=M_PI_2;

   494 	else

   495 		a=atan( vy / vx );

   496 	// "turning point" for drawing polygonal links

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

   498 	

   499     // Draw the link

   500 	switch (style)

   501 	{

   502 		case Line:

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

   504 				qRound(parPos.y()),

   505 				qRound(p2x),

   506 				qRound(p2y) ));

   507 			break;	

   508 		case Parabel:	

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

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

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

   512 			break;

   513 		case PolyLine:

   514 			pa0.clear();

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

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

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

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

   519 			break;

   520 		case PolyParabel:	

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

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

   523 			pa0.clear();

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

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

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

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

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

   529 			break;

   530 		default:

   531 			break;

   532 	} 

   533 }

   534 	

   535 LinkableMapObj* LinkableMapObj::getParObj()

   536 {

   537     return parObj;

   538 }

   539 

   540 QPointF LinkableMapObj::getChildPos()

   541 {

   542     return childPos;

   543 }

   544 

   545 QPointF LinkableMapObj::getParPos()

   546 {

   547     return parPos;

   548 }

   549 

   550 LinkableMapObj::Orientation LinkableMapObj::getOrientation()

   551 {

   552     return orientation;

   553 }

   554 

   555 QPointF LinkableMapObj::getRandPos()

   556 {

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

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

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

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

   561 }

   562 

   563 void LinkableMapObj::reposition()

   564 {

   565 }

   566 

   567 void LinkableMapObj::requestReposition()	//FIXME-3 needed?

   568 {

   569 	if (!repositionRequest)

   570 	{

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

   572 		// been done yet

   573 		repositionRequest=true;

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

   575 	}

   576 }

   577 

   578 void LinkableMapObj::forceReposition()

   579 {

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

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

   582 	// which could collect requests for a reposition.

   583 	// Then we have to call forceReposition()

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

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

   586 	// the end, thus check first:

   587 

   588 	VymModel *model=treeItem->getModel();

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

   590 	

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

   592 	if (parObj) 

   593 		parObj->forceReposition(); 

   594 	else 

   595 		reposition(); 

   596 }

   597 

   598 bool LinkableMapObj::repositionRequested()

   599 {

   600 	return repositionRequest;

   601 }

   602 

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

   604 

   605 {

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

   607 	double vy=p2y - p1y;

   608 

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

   610 	

   611 	double pnx;				// next point

   612 	double pny;

   613 	double m;

   614 

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

   616 		m=0;

   617 	else	

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

   619 	dx=vx/(arcsegs);

   620 	ya.clear();

   621 	ya<<QPointF (p1x,p1y);

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

   623 	{	

   624 		pnx=p1x+dx;

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

   626 		ya<<QPointF (pnx,pny);

   627 		p1x=pnx;

   628 		p1y=pny;

   629 	}	

   630 }

   631
vym