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#include "xlinkobj.h"
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#include "branchobj.h"
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#include "mapeditor.h"
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/////////////////////////////////////////////////////////////////
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// XLinkObj
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/////////////////////////////////////////////////////////////////
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int XLinkObj::arrowSize=10; // make instances
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XLinkObj::XLinkObj ():MapObj()
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{
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// cout << "Const XLinkObj ()\n";
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init();
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}
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XLinkObj::XLinkObj (QCanvas* c):MapObj(c)
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{
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// cout << "Const XLinkObj (c) called from MapCenterObj (c)\n";
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init();
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}
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XLinkObj::~XLinkObj ()
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{
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// cout << "Destr XLinkObj\n";
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if (xLinkState!=undefinedXLink)
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deactivate();
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delete (line);
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delete (poly);
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}
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void XLinkObj::init ()
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{
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beginBranch=NULL;
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endBranch=NULL;
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visBranch=NULL;
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xLinkState=undefinedXLink;
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width=1;
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color=QColor (180,180,180);
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line=new QCanvasLine (canvas);
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line->setPoints (0,0,200,200);
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line->setPen (QPen(color, 1));
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line->setZ (Z_XLINK);
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poly=new QCanvasPolygon (canvas);
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poly->setBrush( color );
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poly->setZ (Z_XLINK);
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setVisibility (false);
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}
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void XLinkObj::copy (XLinkObj* other)
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{
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// FIXME copy not used yet
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cout << "LO::copy called\n";
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MapObj::copy (other);
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setVisibility (other->visible);
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beginBranch=other->beginBranch;
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endBranch=other->endBranch;
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}
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void XLinkObj::setBegin (BranchObj *bo)
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{
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if (bo)
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{
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xLinkState=initXLink;
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beginBranch=bo;
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beginPos=beginBranch->getChildPos();
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}
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}
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void XLinkObj::setEnd (BranchObj *bo)
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{
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if (bo)
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{
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xLinkState=initXLink;
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endBranch=bo;
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endPos=endBranch->getChildPos();
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}
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}
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void XLinkObj::setWidth (int w)
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{
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width=w;
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setColor (color);
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}
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int XLinkObj::getWidth()
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{
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return width;
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}
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void XLinkObj::setColor(QColor c)
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{
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color=c;
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line->setPen (QPen(color, width));
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poly->setBrush( color );
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}
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QColor XLinkObj::getColor()
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{
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return color;
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}
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void XLinkObj::setEnd (QPoint p)
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{
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endPos=p;
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}
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bool XLinkObj::activate ()
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{
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if (beginBranch && endBranch)
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{
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xLinkState=activeXLink;
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beginBranch->addXLink (this);
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endBranch->addXLink (this);
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setVisibility (true);
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return true;
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} else
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return false;
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}
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void XLinkObj::deactivate ()
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{
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if (beginBranch)
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beginBranch->removeXLinkRef (this);
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beginBranch=NULL;
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if (endBranch)
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endBranch->removeXLinkRef (this);
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endBranch=NULL;
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visBranch=NULL;
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xLinkState=undefinedXLink;
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line->hide();
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}
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bool XLinkObj::isUsed()
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{
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if (beginBranch || endBranch || xLinkState!=undefinedXLink)
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return true;
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else
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return false;
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}
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void XLinkObj::updateXLink()
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{
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QPoint a,b;
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QPointArray pa (3);
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if (visBranch)
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{
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// Only one of the linked branches is visible
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a=b=visBranch->getChildPos();
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if (visBranch->getOrientation()==OrientRightOfCenter)
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{
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b.setX (b.x()+25);
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pa.putPoints (0,3,
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b.x(),b.y(),
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b.x()-arrowSize,b.y()-arrowSize,
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b.x()-arrowSize,b.y()+arrowSize
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);
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poly->setPoints (pa);
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} else
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{
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b.setX (b.x()-25);
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pa.putPoints (0,3,
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b.x(),b.y(),
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b.x()+arrowSize,b.y()-arrowSize,
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b.x()+arrowSize,b.y()+arrowSize);
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poly->setPoints (pa);
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}
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} else
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{
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// Both linked branches are visible
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if (beginBranch)
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// If a link is just drawn in the editor,
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// we have already a beginBranch
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a=beginBranch->getChildPos();
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else
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// This shouldn't be reached normally...
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a=beginPos;
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if (xLinkState==activeXLink && endBranch)
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b=endBranch->getChildPos();
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else
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b=endPos;
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}
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if (line->startPoint()==a && line->endPoint()==b && !visBranch)
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{
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// update is called from both branches, so only
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// update if something has changed
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return;
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}
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else
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{
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beginPos=a;
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endPos=b;
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line->setPoints (a.x(), a.y(), b.x(), b.y());
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}
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}
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BranchObj* XLinkObj::otherBranch(BranchObj* thisBranch)
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{
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if (!beginBranch && !endBranch)
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return NULL;
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if (thisBranch==beginBranch)
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return endBranch;
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else
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return beginBranch;
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}
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void XLinkObj::positionBBox()
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{
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}
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void XLinkObj::calcBBoxSize()
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{
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}
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void XLinkObj::setVisibility (bool b)
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{
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MapObj::setVisibility (b);
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if (b)
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{
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line->show();
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if (visBranch)
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poly->show();
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else
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poly->hide();
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}
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else
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{
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line->hide();
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poly->hide();
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}
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}
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void XLinkObj::setVisibility ()
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{
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if (beginBranch && endBranch)
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{
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if(beginBranch->isVisibleObj() && endBranch->isVisibleObj())
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{ // Both ends are visible
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visBranch=NULL;
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setVisibility (true);
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} else
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{
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if(!beginBranch->isVisibleObj() && !endBranch->isVisibleObj())
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{ //None of the ends is visible
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visBranch=NULL;
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setVisibility (false);
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} else
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{ // Just one end is visible, draw a symbol that shows
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// that there is a link to a scrolled branch
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if (beginBranch->isVisibleObj())
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visBranch=beginBranch;
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else
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visBranch=endBranch;
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setVisibility (true);
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}
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}
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}
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}
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QString XLinkObj::saveToDir ()
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{
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QString s;
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if (beginBranch && endBranch)
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{
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QString colAttr=attribut ("color",color.name());
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QString widAttr=attribut ("width",QString().setNum(width,10));
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QString begSelAttr=attribut ("beginBranch",beginBranch->getSelectString());
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QString endSelAttr=attribut ("endBranch", endBranch->getSelectString());
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s=beginElement ("xlink", colAttr +widAttr +begSelAttr +endSelAttr);
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s+=endElement ("xlink");
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}
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return s;
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}
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