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xlinkobj.cpp
author insilmaril
Thu, 27 Jul 2006 15:13:16 +0000
changeset 360 b047741a460a
parent 347 4a3c06183639
child 366 e95081c21da2
permissions -rw-r--r--
added changelog entry for last fix 
     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 (QCanvas* c):MapObj(c)

    19 {

    20 	//	cout << "Const XLinkObj (c)  called from MapCenterObj (c)\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 	line=new QCanvasLine (canvas);

    44 	width=1;

    45 	line->setPen (QPen(color, width));

    46 	line->setZ (Z_XLINK);

    47 

    48 	poly=new QCanvasPolygon (canvas);

    49 	poly->setBrush( color );

    50 	poly->setZ (Z_XLINK);

    51 

    52 	setVisibility (false);

    53 }

    54 

    55 void XLinkObj::copy (XLinkObj* other)

    56 {

    57 	// TODO copy not used yet

    58 	MapObj::copy (other);

    59 	setVisibility (other->visible);

    60 	beginBranch=other->beginBranch;

    61 	endBranch=other->endBranch;

    62 	width=other->width;

    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 	setColor (color);

    99 }

   100 

   101 int XLinkObj::getWidth()

   102 {

   103 	return width;

   104 }

   105 

   106 void XLinkObj::setColor(QColor c)

   107 {

   108 	color=c;

   109 	line->setPen (QPen(color, width));

   110 	poly->setBrush( color );

   111 }

   112 

   113 QColor XLinkObj::getColor()

   114 {

   115 	return color;

   116 }

   117 

   118 void XLinkObj::setEnd (QPoint p)

   119 {

   120 	endPos=p;

   121 }

   122 

   123 bool XLinkObj::activate ()

   124 {

   125 	if (beginBranch && endBranch)

   126 	{

   127 		if (beginBranch==endBranch) return false;

   128 		xLinkState=activeXLink;

   129 		beginBranch->addXLink (this);

   130 		endBranch->addXLink (this);

   131 		setVisibility ();

   132 		return true;

   133 	} else

   134 		return false;

   135 }

   136 

   137 void XLinkObj::deactivate ()

   138 {

   139 	if (beginBranch)

   140 		beginBranch->removeXLinkRef (this);

   141 	beginBranch=NULL;	

   142 	if (endBranch)

   143 		endBranch->removeXLinkRef (this);

   144 	endBranch=NULL;	

   145 	visBranch=NULL;

   146 	xLinkState=undefinedXLink;

   147 

   148 	line->hide();

   149 }

   150 

   151 bool XLinkObj::isUsed()

   152 {

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

   154 		return true;

   155 	else

   156 		return false;

   157 }

   158 

   159 void XLinkObj::updateXLink()

   160 {

   161 	QPoint a,b;

   162 	QPointArray pa (3);

   163 	if (visBranch)

   164 	{

   165 		// Only one of the linked branches is visible

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

   167 		if (visBranch->getOrientation()==OrientRightOfCenter)

   168 		{

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

   170 			pa.putPoints (0,3,

   171 				b.x(),b.y(),

   172 				b.x()-arrowSize,b.y()-arrowSize,

   173 				b.x()-arrowSize,b.y()+arrowSize

   174 			);

   175 			poly->setPoints (pa);

   176 		} else

   177 		{

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

   179 			pa.putPoints (0,3,

   180 				b.x(),b.y(),

   181 				b.x()+arrowSize,b.y()-arrowSize,

   182 				b.x()+arrowSize,b.y()+arrowSize);

   183 			poly->setPoints (pa);

   184 		}	

   185 	} else

   186 	{

   187 		// Both linked branches are visible

   188 		if (beginBranch)

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

   190 			// we have already a beginBranch

   191 			a=beginBranch->getChildPos();

   192 		else

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

   194 			a=beginPos;

   195 		if (xLinkState==activeXLink && endBranch)

   196 			b=endBranch->getChildPos();

   197 		else

   198 			b=endPos;

   199 	}

   200 

   201 

   202 	if (line->startPoint()==a && line->endPoint()==b && !visBranch)

   203 	{

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

   205 		// update if something has changed

   206 		return;

   207 	}	

   208 	else

   209 	{

   210 		beginPos=a;

   211 		endPos=b;

   212 		line->setPen (QPen(color, width));

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

   214 	}

   215 }

   216 

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

   218 {

   219 	if (!beginBranch && !endBranch)

   220 		return NULL;

   221 	if (thisBranch==beginBranch)

   222 		return endBranch;

   223 	else	

   224 		return beginBranch;

   225 }

   226 

   227 void XLinkObj::positionBBox()

   228 {

   229 }

   230 

   231 void XLinkObj::calcBBoxSize()

   232 {

   233 }

   234 

   235 void XLinkObj::setVisibility (bool b)

   236 {

   237 	MapObj::setVisibility (b);

   238 	if (b)

   239 	{

   240 		line->show();

   241 		if (visBranch) 

   242 			poly->show();

   243 		else	

   244 			poly->hide();

   245 	}	

   246 	else

   247 	{

   248 		line->hide();

   249 		poly->hide();

   250 	}	

   251 }

   252 

   253 void XLinkObj::setVisibility ()

   254 {

   255 	if (beginBranch && endBranch)

   256 	{

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

   258 		{	// Both ends are visible

   259 			visBranch=NULL;

   260 			setVisibility (true);

   261 		} else

   262 		{

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

   264 			{	//None of the ends is visible

   265 				visBranch=NULL;

   266 				setVisibility (false);

   267 			} else

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

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

   270 				if (beginBranch->isVisibleObj())

   271 					visBranch=beginBranch;

   272 				else

   273 					visBranch=endBranch;

   274 				setVisibility (true);

   275 			}

   276 		}

   277 	}

   278 }

   279 

   280 QString XLinkObj::saveToDir ()

   281 {

   282 	QString s="";

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

   284 	{

   285 		if (beginBranch==endBranch && xLinkState)

   286 			s="";

   287 		else

   288 		{

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

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

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

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

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

   294 

   295 			s+=endElement ("xlink");

   296 		}

   297 	}

   298 	return s;

   299 }

   300
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