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xlinkobj.cpp
author insilmaril
Tue, 08 Sep 2009 12:15:39 +0000
changeset 792 7d67be709091
parent 790 133e2ed6b9c5
child 847 43268373032d
permissions -rw-r--r--
First results in moving colliding MapCenters apart 
     1 #include "xlinkobj.h"

     2 

     3 #include "branchobj.h"

     4 #include "branchitem.h"

     5 #include "xlinkitem.h"

     6 

     7 #include <iostream>

     8 using namespace std;

     9 

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

    11 // XLinkObj

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

    13 

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

    15 

    16 XLinkObj::XLinkObj (QGraphicsScene* scene, TreeItem* ti):MapObj(scene,ti)

    17 {

    18 	//cout << "Const XLinkObj (s)\n";

    19 	init();

    20 }

    21 

    22 

    23 XLinkObj::~XLinkObj ()

    24 {

    25 	//cout << "Destr XLinkObj\n";

    26 	delete (line);

    27 	delete (poly);

    28 }

    29 

    30 

    31 void XLinkObj::init () 

    32 {

    33 	XLinkItem *xli=(XLinkItem*)treeItem;

    34 	visBranch=NULL;

    35 

    36 	pen.setColor ( xli->getColor() );

    37 	pen.setWidth ( xli->getWidth() );

    38 	pen.setCapStyle (  Qt::RoundCap );

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

    40     line->setZValue (Z_XLINK);

    41 	poly=scene->addPolygon(QPolygonF(),pen, xli->getColor());

    42     poly->setZValue (Z_XLINK);

    43 	setVisibility (true);

    44 }

    45 

    46 void XLinkObj::setEnd (QPointF p)

    47 {

    48 	endPos=p;

    49 }

    50 

    51 

    52 void XLinkObj::updateXLink()

    53 {

    54 	QPointF a,b;

    55 	QPolygonF pa;

    56 	if (visBranch)

    57 	{

    58 		// Only one of the linked branches is visible

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

    60 		if (!bo) return;

    61 

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

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

    64 		{

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

    66 			

    67 			pa.clear();

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

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

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

    71 			poly->setPolygon(pa);

    72 		} else

    73 		{

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

    75 			pa.clear();

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

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

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

    79 			poly->setPolygon (pa);

    80 		}	

    81 	} else

    82 	{

    83 		// Both linked branches are visible

    84 		BranchItem *bi=((XLinkItem*)treeItem)->getBegin();

    85 		if ( bi)

    86 		{

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

    88 			// we have already a beginBranch

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

    90 			if (bo)	

    91 				a=bo->getChildPos();

    92 			else 

    93 				return;	

    94 		}	

    95 		else

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

    97 			a=beginPos;

    98 

    99 		// FIXME-3 try to get rid of xLinkstate if (xLinkState==activeXLink && endBranch)

   100 		bi=((XLinkItem*)treeItem)->getEnd();

   101 		if (bi)

   102 		{

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

   104 			if (bo)	

   105 				b=bo->getChildPos();

   106 			else 

   107 				return;	

   108 		}

   109 		else

   110 			b=endPos;

   111 	}

   112 

   113 	beginPos=a;

   114 	endPos=b;

   115 	XLinkItem *xli=(XLinkItem*)treeItem;

   116 	pen.setColor ( xli->getColor() );

   117 	pen.setWidth ( xli->getWidth() );

   118 	poly->setBrush (xli->getColor() );

   119 	line->setPen (pen);

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

   121 }

   122 

   123 void XLinkObj::positionBBox()

   124 {

   125 }

   126 

   127 void XLinkObj::calcBBoxSize()

   128 {

   129 }

   130 

   131 void XLinkObj::setVisibility (bool b)

   132 {

   133 	MapObj::setVisibility (b);

   134 	if (b)

   135 	{

   136 		line->show();

   137 		if (visBranch) 

   138 			poly->show();

   139 		else	

   140 			poly->hide();

   141 	}	

   142 	else

   143 	{

   144 		line->hide();

   145 		poly->hide();

   146 	}	

   147 }

   148 

   149 void XLinkObj::setVisibility ()

   150 {

   151 	BranchItem* beginBI=((XLinkItem*)treeItem)->getBegin();

   152 	BranchObj* beginBO=NULL;

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

   154 

   155 	BranchObj* endBO=NULL;

   156 	BranchItem* endBI=((XLinkItem*)treeItem)->getEnd();

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

   158 	if (beginBO && endBO)

   159 	{

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

   161 		{	// Both ends are visible

   162 			visBranch=NULL;

   163 			setVisibility (true);

   164 		} else

   165 		{

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

   167 			{	//None of the ends is visible

   168 				visBranch=NULL;

   169 				setVisibility (false);

   170 			} else

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

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

   173 				if (beginBO->isVisibleObj())

   174 					visBranch=beginBI;

   175 				else

   176 					visBranch=endBI;

   177 				setVisibility (true);

   178 			}

   179 		}

   180 	}

   181 }

   182 

   183
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