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#include "headingobj.h"
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#include <qregexp.h>
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/////////////////////////////////////////////////////////////////
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// HeadingObj
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/////////////////////////////////////////////////////////////////
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HeadingObj::HeadingObj() : MapObj()
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{
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// cout << "Const HeadingObj ()\n";
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init ();
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}
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HeadingObj::HeadingObj(QGraphicsScene *s) :MapObj(s)
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{
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// cout << "Const HeadingObj (s)\n";
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init ();
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}
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HeadingObj::~HeadingObj()
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{
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// cout << "Destr. HeadingObj "<<qPrintable(heading)<<endl;
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while (!textline.isEmpty())
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delete textline.takeFirst();
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}
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void HeadingObj::init()
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{
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textwidth=40;
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color=QColor ("black");
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font=QFont();
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heading="";
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}
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void HeadingObj::copy(HeadingObj *other)
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{
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MapObj::copy (other);
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textwidth=other->textwidth;
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color=other->color;
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font=other->font;
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setText (other->text() );
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}
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void HeadingObj::move(double x, double y)
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{
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MapObj::move(x,y);
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qreal h; // height of a textline
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qreal ho; // offset of height while drawing all lines
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if (!textline.isEmpty() )
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h=textline.first()->boundingRect().height();
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else
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h=2;
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ho=0;
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for (int i=0; i<textline.size(); ++i)
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{
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textline.at(i)->setPos(x,y+ho);
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ho=ho+h;
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}
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}
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void HeadingObj::moveBy(double x, double y)
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{
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move (x+absPos.x(),y+absPos.y() );
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}
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void HeadingObj::positionBBox()
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{
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bbox.setX (absPos.x());
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bbox.setY (absPos.y());
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}
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void HeadingObj::calcBBoxSize()
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{
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qreal w=0;
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qreal h=0;
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// Using Backspace an empty heading might easily be created, then there
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// would be textline.first()==NULL This can be worked around by the following, but
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// then no selection would be visible, thus we prevent it in ::setText()
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if (!textline.isEmpty() )
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{
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for (int i=0; i<textline.size(); i++)
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{
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h+=textline.at(i)->boundingRect().height();
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if (w<textline.at(i)->boundingRect().width() )
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w=textline.at(i)->boundingRect().width();
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}
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}
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bbox.setSize (QSizeF(w,h));
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}
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//QGraphicsSimpleTextItem* HeadingObj::newLine(QString s)
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QGraphicsTextItem* HeadingObj::newLine(QString s)
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{
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//QGraphicsSimpleTextItem *t=new QGraphicsSimpleTextItem (s,0,scene);
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QGraphicsTextItem *t=new QGraphicsTextItem (s,0,scene);
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t->setFont (font);
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t->setZValue(Z_TEXT);
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// TextItem
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t->setDefaultTextColor(color);
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// SimpleTextItem
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//t->setBrush(color);
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return t;
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}
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void HeadingObj::setText (QString s)
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{
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heading=s;
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// remove old textlines and prepare generating new ones
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while (!textline.isEmpty())
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delete textline.takeFirst();
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if (s.startsWith("<html>"))
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{
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QGraphicsTextItem *t=new QGraphicsTextItem ();
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t->setFont (font);
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t->setZValue(Z_TEXT);
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t->setHtml (s);
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t->setDefaultTextColor(color);
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scene->addItem (t);
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textline.append (t);
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setVisibility (visible);
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move (absPos.x(),absPos.y());
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calcBBoxSize();
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return;
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}
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// prevent empty textline, so at least a small selection stays
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// visible for this heading
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if (s.length()==0) s=" ";
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int i=0; // index for actual search for ws
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int j=0; // index of last ws
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int k=0; // index of "<br>" or similar linebreak
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int br=0; // width of found break, e.g. for <br> it is 4
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QRegExp re("<br.*/>");
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re.setMinimal (true);
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// set the text and wrap lines
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while (s.length()>0)
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{
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// ok, some people wanted manual linebreaks, here we go
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k=re.search (s,i);
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if (k>=0)
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{
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br=re.cap(0).length();
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i=k;
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} else
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i=s.find (" ",i,false);
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if (i<0 && j==0)
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{ // no ws found at all in s
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// append whole s
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textline.append (newLine(s));
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s="";
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} else
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{
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if (i<0 && j>0)
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{ // no ws found in actual search
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if (s.length()<=textwidth)
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{
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textline.append (newLine(s));
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s="";
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} else
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{
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textline.append (newLine(s.left(j)));
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s=s.mid(j+1,s.length());
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j=0;
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}
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} else
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{
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if (i>= 0 && i<=static_cast <int> (textwidth))
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{ // there is a ws in textwidth
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if (br>0)
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{
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// here is a linebreak
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textline.append (newLine(s.left(i)));
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s=s.mid(i+br,s.length());
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i=0;
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j=0;
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br=0;
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} else
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{
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j=i;
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i++;
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}
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} else
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{
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if (i>static_cast <int> (textwidth) )
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{
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if (j>0)
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{ // a ws out of textwidth, but we have also one in
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textline.append (newLine(s.left(j)));
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s=s.mid(j+1,s.length());
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i=0;
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j=0;
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} else
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{ // a ws out of text, but none in
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textline.append (newLine(s.left(i)));
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s=s.mid(i+1,s.length());
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i=0;
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}
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}
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}
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}
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}
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}
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setVisibility (visible);
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move (absPos.x(),absPos.y());
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calcBBoxSize();
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}
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QString HeadingObj::text ()
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{
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return heading;
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}
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void HeadingObj::setFont (QFont f)
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{
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if (font!=f)
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{
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font=f;
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setText (text());
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}
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}
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QFont HeadingObj::getFont()
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{
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return font;
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}
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void HeadingObj::setColor (QColor c)
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{
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if (color!=c)
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{
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color=c;
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for (int i=0; i<textline.size(); ++i)
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// TextItem
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textline.at(i)->setDefaultTextColor(c);
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// SimpleTextItem
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//textline.at(i)->setBrush(c);
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}
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}
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QColor HeadingObj::getColor()
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{
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return color;
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}
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void HeadingObj::setVisibility (bool v)
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{
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MapObj::setVisibility(v);
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for (int i=0; i<textline.size(); ++i)
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if (v)
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textline.at(i)->show();
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else
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textline.at(i)->hide();
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}
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qreal HeadingObj::getHeight ()
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{
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return bbox.height();
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}
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qreal HeadingObj::getWidth()
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{
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return bbox.width();
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}
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