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xlinkobj.cpp
author insilmaril
Wed May 02 15:31:17 2007 +0000 (2007-05-02)
changeset 481 31196a98699c
parent 408 c2a05fa925a1
child 532 50dc461a95e0
permissions -rw-r--r--
Mainly documentation fixes 
     1 #include "xlinkobj.h"

     2 #include "branchobj.h"

     3 #include "mapeditor.h"

     4 

     5 

     6 /////////////////////////////////////////////////////////////////

     7 // XLinkObj

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

     9 

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

    11 

    12 XLinkObj::XLinkObj ():MapObj() 

    13 {

    14 	//	cout << "Const XLinkObj ()\n";

    15 	init();

    16 }

    17 

    18 XLinkObj::XLinkObj (QGraphicsScene* s):MapObj(s)

    19 {

    20 	//	cout << "Const XLinkObj (s)  called from MapCenterObj (s)\n";

    21 	init();

    22 }

    23 

    24 

    25 XLinkObj::~XLinkObj ()

    26 {

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

    28 	if (xLinkState!=undefinedXLink)

    29 		deactivate();

    30 	delete (line);

    31 	delete (poly);

    32 }

    33 

    34 

    35 void XLinkObj::init () 

    36 {

    37 	beginBranch=NULL;

    38 	endBranch=NULL;

    39 	visBranch=NULL;

    40 	xLinkState=undefinedXLink;

    41 

    42 	color=QColor (180,180,180);

    43 	width=1;

    44 	pen.setColor (color);

    45 	pen.setWidth (width);

    46 	pen.setCapStyle (  Qt::RoundCap );

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

    48     line->setZValue (Z_XLINK);

    49 	poly=scene->addPolygon(QPolygonF(),pen,color);

    50     poly->setZValue (Z_XLINK);

    51 	setVisibility (false);

    52 }

    53 

    54 void XLinkObj::copy (XLinkObj* other)

    55 {

    56 	// TODO copy not used yet

    57 	MapObj::copy (other);

    58 	setVisibility (other->visible);

    59 	beginBranch=other->beginBranch;

    60 	endBranch=other->endBranch;

    61 	width=other->width;

    62 

    63 }

    64 

    65 void XLinkObj::setBegin (BranchObj *bo)

    66 {

    67 	if (bo) 

    68 	{

    69 		xLinkState=initXLink;

    70 		beginBranch=bo;

    71 		beginPos=beginBranch->getChildPos();

    72 	}	

    73 }

    74 

    75 BranchObj* XLinkObj::getBegin ()

    76 {

    77 	return beginBranch;

    78 }

    79 

    80 void XLinkObj::setEnd (BranchObj *bo)

    81 {

    82 	if (bo) 

    83 	{

    84 		xLinkState=initXLink;

    85 		endBranch=bo;

    86 		endPos=endBranch->getChildPos();

    87 	}		

    88 }

    89 

    90 BranchObj* XLinkObj::getEnd()

    91 {

    92 	return endBranch;

    93 }

    94 

    95 void XLinkObj::setWidth (int w)

    96 {

    97 	width=w;

    98 	pen.setWidth (w);

    99 	setColor (color);

   100 }

   101 

   102 int XLinkObj::getWidth()

   103 {

   104 	return pen.width();

   105 }

   106 

   107 void XLinkObj::setColor(QColor c)

   108 {

   109 	color=c;

   110 	pen.setColor (c);

   111 	line->setPen (pen);

   112 	poly->setBrush( color );

   113 }

   114 

   115 QColor XLinkObj::getColor()

   116 {

   117 	return pen.color();

   118 }

   119 

   120 void XLinkObj::setEnd (QPointF p)

   121 {

   122 	endPos=p;

   123 }

   124 

   125 bool XLinkObj::activate ()

   126 {

   127 	if (beginBranch && endBranch)

   128 	{

   129 		if (beginBranch==endBranch) return false;

   130 		xLinkState=activeXLink;

   131 		beginBranch->addXLink (this);

   132 		endBranch->addXLink (this);

   133 		setVisibility ();

   134 		return true;

   135 	} else

   136 		return false;

   137 }

   138 

   139 void XLinkObj::deactivate ()

   140 {

   141 	if (beginBranch)

   142 		beginBranch->removeXLinkRef (this);

   143 	beginBranch=NULL;	

   144 	if (endBranch)

   145 		endBranch->removeXLinkRef (this);

   146 	endBranch=NULL;	

   147 	visBranch=NULL;

   148 	xLinkState=undefinedXLink;

   149 

   150 	line->hide();

   151 }

   152 

   153 bool XLinkObj::isUsed()

   154 {

   155 	if (beginBranch || endBranch || xLinkState!=undefinedXLink)

   156 		return true;

   157 	else

   158 		return false;

   159 }

   160 

   161 void XLinkObj::updateXLink()

   162 {

   163 	QPointF a,b;

   164 	QPolygonF pa;

   165 	if (visBranch)

   166 	{

   167 		// Only one of the linked branches is visible

   168 		a=b=visBranch->getChildPos();

   169 		if (visBranch->getOrientation()==LinkableMapObj::RightOfCenter)

   170 		{

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

   172 			

   173 			pa.clear();

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

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

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

   177 			poly->setPolygon(pa);

   178 		} else

   179 		{

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

   181 			pa.clear();

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

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

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

   185 			poly->setPolygon (pa);

   186 		}	

   187 	} else

   188 	{

   189 		// Both linked branches are visible

   190 		if (beginBranch)

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

   192 			// we have already a beginBranch

   193 			a=beginBranch->getChildPos();

   194 		else

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

   196 			a=beginPos;

   197 		if (xLinkState==activeXLink && endBranch)

   198 			b=endBranch->getChildPos();

   199 		else

   200 			b=endPos;

   201 	}

   202 

   203 

   204 	if (line->line().p1()==a && line->line().p2()==b && !visBranch)

   205 	{

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

   207 		// update if something has changed

   208 		return;

   209 	}	

   210 	else

   211 	{

   212 		beginPos=a;

   213 		endPos=b;

   214 		line->setPen (pen);

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

   216 	}

   217 }

   218 

   219 BranchObj* XLinkObj::otherBranch(BranchObj* thisBranch)

   220 {

   221 	if (!beginBranch && !endBranch)

   222 		return NULL;

   223 	if (thisBranch==beginBranch)

   224 		return endBranch;

   225 	else	

   226 		return beginBranch;

   227 }

   228 

   229 void XLinkObj::positionBBox()

   230 {

   231 }

   232 

   233 void XLinkObj::calcBBoxSize()

   234 {

   235 }

   236 

   237 void XLinkObj::setVisibility (bool b)

   238 {

   239 	MapObj::setVisibility (b);

   240 	if (b)

   241 	{

   242 		line->show();

   243 		if (visBranch) 

   244 			poly->show();

   245 		else	

   246 			poly->hide();

   247 	}	

   248 	else

   249 	{

   250 		line->hide();

   251 		poly->hide();

   252 	}	

   253 }

   254 

   255 void XLinkObj::setVisibility ()

   256 {

   257 	if (beginBranch && endBranch)

   258 	{

   259 		if(beginBranch->isVisibleObj() && endBranch->isVisibleObj())

   260 		{	// Both ends are visible

   261 			visBranch=NULL;

   262 			setVisibility (true);

   263 		} else

   264 		{

   265 			if(!beginBranch->isVisibleObj() && !endBranch->isVisibleObj())

   266 			{	//None of the ends is visible

   267 				visBranch=NULL;

   268 				setVisibility (false);

   269 			} else

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

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

   272 				if (beginBranch->isVisibleObj())

   273 					visBranch=beginBranch;

   274 				else

   275 					visBranch=endBranch;

   276 				setVisibility (true);

   277 			}

   278 		}

   279 	}

   280 }

   281 

   282 QString XLinkObj::saveToDir ()

   283 {

   284 	QString s="";

   285 	if (beginBranch && endBranch &&xLinkState==activeXLink)

   286 	{

   287 		if (beginBranch==endBranch && xLinkState)

   288 			s="";

   289 		else

   290 		{

   291 			QString colAttr=attribut ("color",color.name());

   292 			QString widAttr=attribut ("width",QString().setNum(width,10));

   293 			QString begSelAttr=attribut ("beginBranch",beginBranch->getSelectString());

   294 			QString endSelAttr=attribut ("endBranch",  endBranch->getSelectString());

   295 			s=beginElement ("xlink", colAttr +widAttr +begSelAttr +endSelAttr);

   296 

   297 			s+=endElement ("xlink");

   298 		}

   299 	}

   300 	return s;

   301 }

   302
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