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xlinkobj.cpp
author convert-repo
Fri, 23 Jul 2010 16:43:49 +0000
changeset 849 988f1908a7c4
parent 847 43268373032d
permissions -rw-r--r--
update tags 
     1 #include <QDebug>

     2 

     3 #include "xlinkobj.h"

     4 

     5 #include "branchobj.h"

     6 #include "branchitem.h"

     7 

     8 /////////////////////////////////////////////////////////////////

     9 // XLinkObj

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

    11 

    12 int XLinkObj::arrowSize=10;					// make instances

    13 

    14 XLinkObj::XLinkObj (QGraphicsScene* scene,Link *l):MapObj(scene)

    15 {

    16 	//qDebug()<< "Const XLinkObj (s,Link)";

    17 	link=l;

    18 	init();

    19 }

    20 

    21 

    22 

    23 XLinkObj::~XLinkObj ()

    24 {

    25 	//qDebug() << "Destr XLinkObj";

    26 	delete (line);

    27 	delete (poly);

    28 }

    29 

    30 

    31 void XLinkObj::init () 

    32 {

    33 	visBranch=NULL;

    34 

    35 	pen.setColor ( link->getColor() );

    36 	pen.setWidth ( link->getWidth() );

    37 	pen.setCapStyle (  Qt::RoundCap );

    38 	line=scene->addLine(QLineF(1,1,1,1),pen);

    39 	line->setZValue (Z_LINK);

    40 	poly=scene->addPolygon(QPolygonF(),pen, link->getColor());

    41 	poly->setZValue (Z_LINK);

    42 	setVisibility (true);

    43 }

    44 

    45 void XLinkObj::setEnd (QPointF p)

    46 {

    47 	endPos=p;

    48 }

    49 

    50 

    51 void XLinkObj::updateXLink()

    52 {

    53 	QPointF a,b;

    54 	QPolygonF pa;

    55 	if (visBranch)   

    56 	{

    57 		// Only one of the linked branches is visible

    58 		BranchObj *bo=(BranchObj*)(visBranch->getLMO());

    59 		if (!bo) return;

    60 

    61 		a=b=bo->getChildPos();

    62 		if (bo->getOrientation()==LinkableMapObj::RightOfCenter)

    63 		{

    64 			b.setX (b.x()+25);

    65 			

    66 			pa.clear();

    67 			pa<< QPointF(b.x(),b.y())<<

    68 				QPointF(b.x()-arrowSize,b.y()-arrowSize)<<

    69 				QPointF(b.x()-arrowSize,b.y()+arrowSize);

    70 			poly->setPolygon(pa);

    71 		} else

    72 		{

    73 			b.setX (b.x()-25);

    74 			pa.clear();

    75 			pa<< QPointF(b.x(),b.y())<<

    76 				QPointF(b.x()+arrowSize,b.y()-arrowSize)<<

    77 				QPointF(b.x()+arrowSize,b.y()+arrowSize);

    78 			poly->setPolygon (pa);

    79 		}	

    80 	} else

    81 	{

    82 		// Both linked branches are visible

    83 		BranchItem *bi=link->getBeginBranch();

    84 		if ( bi)

    85 		{

    86 			// If a link is just drawn in the editor,

    87 			// we have already a beginBranch

    88 			BranchObj *bo=(BranchObj*)(bi->getLMO());

    89 			if (bo)	

    90 				a=bo->getChildPos();

    91 			else 

    92 				return;	

    93 		}	

    94 		else

    95 			// This shouldn't be reached normally...

    96 			a=beginPos;

    97 

    98 		bi=link->getEndBranch();

    99 		if (bi)

   100 		{

   101 			BranchObj *bo=(BranchObj*)(bi->getLMO());

   102 			if (bo)	

   103 				b=bo->getChildPos();

   104 			else 

   105 				return;	

   106 		}

   107 		else

   108 			b=endPos;

   109 	}

   110 

   111 	beginPos=a;

   112 	endPos=b;

   113 	pen.setColor ( link->getColor() );

   114 	pen.setWidth ( link->getWidth() );

   115 	poly->setBrush (link->getColor() );

   116 	line->setPen (pen);

   117 	line->setLine(a.x(), a.y(), b.x(), b.y());

   118 }

   119 

   120 void XLinkObj::positionBBox()

   121 {

   122 }

   123 

   124 void XLinkObj::calcBBoxSize()

   125 {

   126 }

   127 

   128 void XLinkObj::setVisibility (bool b)

   129 {

   130 	MapObj::setVisibility (b);

   131 	if (b)

   132 	{

   133 		line->show();

   134 		if (visBranch) 

   135 			poly->show();

   136 		else	

   137 			poly->hide();

   138 	}	

   139 	else

   140 	{

   141 		line->hide();

   142 		poly->hide();

   143 	}	

   144 }

   145 

   146 void XLinkObj::setVisibility ()

   147 {

   148 	BranchItem* beginBI=link->getBeginBranch();

   149 	BranchObj* beginBO=NULL;

   150 	if (beginBI) beginBO=(BranchObj*)(beginBI->getLMO());

   151 

   152 	BranchObj* endBO=NULL;

   153 	BranchItem* endBI=link->getEndBranch();

   154 	if (endBI) endBO=(BranchObj*)(endBI->getLMO());

   155 	if (beginBO && endBO)

   156 	{

   157 		if(beginBO->isVisibleObj() && endBO->isVisibleObj())

   158 		{	// Both ends are visible

   159 			visBranch=NULL;

   160 			setVisibility (true);

   161 		} else

   162 		{

   163 			if(!beginBO->isVisibleObj() && !endBO->isVisibleObj())

   164 			{	//None of the ends is visible

   165 				visBranch=NULL;

   166 				setVisibility (false);

   167 			} else

   168 			{	// Just one end is visible, draw a symbol that shows

   169 				// that there is a link to a scrolled branch

   170 				if (beginBO->isVisibleObj())

   171 					visBranch=beginBI;

   172 				else

   173 					visBranch=endBI;

   174 				setVisibility (true);

   175 			}

   176 		}

   177 	}

   178 }

   179 

   180
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