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#include "linkobj.h"
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#include "branchobj.h"
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/////////////////////////////////////////////////////////////////
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// LinkObj
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/////////////////////////////////////////////////////////////////
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LinkObj::LinkObj ():MapObj()
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{
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// cout << "Const LinkObj ()\n";
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init();
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}
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LinkObj::LinkObj (QCanvas* c):MapObj(c)
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{
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// cout << "Const LinkObj (c) called from MapCenterObj (c)\n";
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init();
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}
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LinkObj::~LinkObj ()
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{
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// cout << "Destr LinkObj\n";
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if (linkState!=undefinedLink)
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deactivate();
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delete (line);
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}
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void LinkObj::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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linkState=undefinedLink;
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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(QColor(200,200,200), 1));
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setVisibility (false);
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}
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void LinkObj::copy (LinkObj* 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 LinkObj::setBegin (BranchObj *bo)
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{
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if (bo)
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{
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linkState=initLink;
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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 LinkObj::setEnd (BranchObj *bo)
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{
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if (bo)
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{
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linkState=initLink;
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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 LinkObj::setEnd (QPoint p)
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{
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endPos=p;
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}
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bool LinkObj::activate ()
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{
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if (beginBranch && endBranch)
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{
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linkState=activeLink;
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beginBranch->addLink (this);
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endBranch->addLink (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 LinkObj::deactivate ()
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{
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if (beginBranch)
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beginBranch->removeLinkRef (this);
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beginBranch=NULL;
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if (endBranch)
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endBranch->removeLinkRef (this);
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endBranch=NULL;
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visBranch=NULL;
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linkState=undefinedLink;
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line->hide();
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}
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bool LinkObj::isUsed()
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{
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if (beginBranch || endBranch || linkState!=undefinedLink)
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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 LinkObj::updateLink()
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{
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QPoint a,b;
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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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b.setX (b.x()+25);
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else
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b.setX (b.x()-25);
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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 (linkState==activeLink && 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 needed
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cout <<"LO__updateL returnung...\n";
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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* LinkObj::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 LinkObj::positionBBox()
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{
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}
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void LinkObj::calcBBoxSize()
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{
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}
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void LinkObj::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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}
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else
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{
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line->hide();
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}
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}
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void LinkObj::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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setVisibility (true);
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visBranch=NULL;
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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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setVisibility (false);
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visBranch=NULL;
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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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setVisibility (true);
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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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}
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}
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}
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}
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