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linkobj.cpp
author insilmaril
Mon, 31 Jan 2005 09:47:43 +0000
changeset 88 9771028de303
parent 86 0ed77eb5d1cd
child 89 9db3eaa21237
permissions -rw-r--r--
fixed segfault when loading .vyp 
     1 #include "linkobj.h"

     2 #include "branchobj.h"

     3 

     4 

     5 /////////////////////////////////////////////////////////////////

     6 // LinkObj

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

     8 

     9 LinkObj::LinkObj ():MapObj() 

    10 {

    11 //	cout << "Const LinkObj ()\n";

    12     init();

    13 }

    14 

    15 LinkObj::LinkObj (QCanvas* c):MapObj(c)

    16 {

    17 //	cout << "Const LinkObj (c)  called from MapCenterObj (c)\n";

    18     init();

    19 }

    20 

    21 

    22 LinkObj::~LinkObj ()

    23 {

    24 //	cout << "Destr LinkObj\n";

    25 	if (linkState!=undefinedLink)

    26 		deactivate();

    27 	delete (line);

    28 }

    29 

    30 void LinkObj::init () 

    31 {

    32 	beginBranch=NULL;

    33 	endBranch=NULL;

    34 	linkState=undefinedLink;

    35 

    36 	line=new QCanvasLine (canvas);

    37 	line->setPoints (0,0,200,200);

    38 	line->setPen (QPen(QColor(200,200,200), 1));

    39 

    40 	setVisibility (false);

    41 }

    42 

    43 void LinkObj::copy (LinkObj* other)

    44 {

    45 	// FIXME copy not used yet

    46 	cout << "LO::copy called\n";

    47 	MapObj::copy (other);

    48 	setVisibility (other->visible);

    49 	beginBranch=other->beginBranch;

    50 	endBranch=other->endBranch;

    51 }

    52 

    53 void LinkObj::setBegin (BranchObj *bo)

    54 {

    55 	if (bo) 

    56 	{

    57 		linkState=initLink;

    58 		beginBranch=bo;

    59 		beginPos=beginBranch->getChildPos();

    60 	}	

    61 }

    62 

    63 void LinkObj::setEnd (BranchObj *bo)

    64 {

    65 	if (bo) 

    66 	{

    67 		linkState=initLink;

    68 		endBranch=bo;

    69 		endPos=endBranch->getChildPos();

    70 	}		

    71 }

    72 

    73 void LinkObj::setEnd (QPoint p)

    74 {

    75 	endPos=p;

    76 }

    77 

    78 bool LinkObj::activate ()

    79 {

    80 	if (beginBranch && endBranch)

    81 	{

    82 		linkState=activeLink;

    83 		beginBranch->addLink (this);

    84 		endBranch->addLink (this);

    85 		setVisibility (true);

    86 		return true;

    87 	} else

    88 		return false;

    89 }

    90 

    91 void LinkObj::deactivate ()

    92 {

    93 	if (beginBranch)

    94 		beginBranch->removeLink (this);

    95 	beginBranch=NULL;	

    96 	if (endBranch)

    97 		endBranch->removeLink (this);

    98 	endBranch=NULL;	

    99 	linkState=undefinedLink;

   100 

   101 	line->hide();

   102 }

   103 

   104 bool LinkObj::isUsed()

   105 {

   106 	if (beginBranch || endBranch || linkState!=undefinedLink)

   107 		return true;

   108 	else

   109 		return false;

   110 }

   111 

   112 void LinkObj::updateLink()

   113 {

   114 	QPoint a,b;

   115 	if (beginBranch)

   116 		// If a link is just drawed in the editor,

   117 		// we have already a beginBranch

   118 		a=beginBranch->getChildPos();

   119 	else

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

   121 		a=beginPos;

   122 	if (linkState==activeLink && endBranch)

   123 		b=endBranch->getChildPos();

   124 	else

   125 		b=endPos;

   126 	

   127 	if (line->startPoint()==a && line->endPoint()==b)

   128 		// update is called from both branches, so only

   129 		// update if needed

   130 		return;

   131 	else

   132 	{

   133 		beginPos=a;

   134 		endPos=b;

   135 		line->setPoints (a.x(), a.y(), b.x(), b.y());

   136 	}

   137 }

   138 

   139 void LinkObj::positionBBox()

   140 {

   141 }

   142 

   143 void LinkObj::calcBBoxSize()

   144 {

   145 }

   146 

   147 void LinkObj::setVisibility (bool b)

   148 {

   149 	MapObj::setVisibility (b);

   150 	if (b)

   151 	{

   152 		line->show();

   153 	}	

   154 	else

   155 	{

   156 		line->hide();

   157 	}	

   158 }

   159
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