diff -r 000000000000 -r 3f25bb36200e headingobj.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/headingobj.cpp	Wed May 06 10:00:18 2009 +0000
@@ -0,0 +1,246 @@
+#include "headingobj.h"
+
+/////////////////////////////////////////////////////////////////
+// HeadingObj
+/////////////////////////////////////////////////////////////////
+HeadingObj::HeadingObj() : MapObj()
+{
+//    cout << "Const HeadingObj ()\n";
+    init ();
+}
+
+HeadingObj::HeadingObj(QCanvas* c) :MapObj(c)
+{
+//    cout << "Const HeadingObj\n";
+    init ();
+}
+
+HeadingObj::~HeadingObj()
+{
+    textline.clear();
+}
+
+void HeadingObj::init()
+{
+    textline.setAutoDelete (TRUE);
+    textwidth=40;
+    color=QColor ("black");
+    font=QFont();
+}
+
+void HeadingObj::copy(HeadingObj *other)
+{
+    MapObj::copy (other);
+    textwidth=other->textwidth;
+    color=other->color;
+    font=other->font;
+    setText (other->text() );
+}
+
+void HeadingObj::move(double x, double y)
+{
+    MapObj::move(x,y);
+    int h;	// height of a textline
+    int ho;	// offset of height while drawing all lines
+    if (textline.first() )
+		h=textline.first()->boundingRect().height();
+    else
+		h=2;
+    QCanvasText *t;
+    ho=0;
+    for (t=textline.first(); t; t=textline.next() )
+    {
+		t->move(x,y+ho);
+		ho=ho+h;
+    }	
+}
+
+
+void HeadingObj::moveBy(double x, double y)
+{
+    move (x+absPos.x(),y+absPos.y() );
+}
+
+void HeadingObj::positionBBox()
+{
+    bbox.setX (absPos.x());
+    bbox.setY (absPos.y());
+}
+
+void HeadingObj::calcBBoxSize()
+{	
+	int w=0;
+	int h=0;
+	// Using Backspace an empty heading might easily be created, then there
+	// would be textline.first()==NULL This can be worked around by the following, but
+	// then no selection would be visible, thus we prevent it in ::setText()
+	if (!textline.isEmpty() )
+	{
+		QCanvasText *t;
+		for (t=textline.first(); t; t=textline.next() )
+		{
+			h+=t->boundingRect().height();
+			if (w<t->boundingRect().width() )
+				w=t->boundingRect().width();
+		}	
+	} 
+    bbox.setSize (QSize(w,h));
+}
+
+QCanvasText* HeadingObj::newLine(QString s)
+{
+    QCanvasText *t;
+    t = new QCanvasText(canvas);
+    t->setFont (font);
+    t->setColor (color);
+    t->setZ(Z_TEXT);
+    t->setText(s);
+    t->show();
+    return t;
+}
+
+void HeadingObj::setText (QString s)
+{
+    heading=s;
+
+    // remove old textlines and prepare generating new ones
+    textline.clear();
+
+	// prevent empty textline, so at least a small selection stays
+	// visible for this heading
+	if (s.length()==0) s="  ";
+
+    int i=0;	// index for actual search for ws
+    int j=0;	// index of last ws
+	int k=0;	// index of "<br>" or similar linebreak
+	int br=0;	// width of found break, e.g. for <br> it is 4
+
+    // set the text and wrap lines
+    while (s.length()>0)
+    {
+		// ok, some people wanted manual linebreaks, here we go
+		k=s.find ("<br>",i,false);
+		if (k>=0)
+		{
+			br=4;
+			i=k;
+		} else
+			i=s.find (" ",i,false);
+		if (i<0 && j==0)
+		{   // no ws found at all in s
+			// append whole s
+			textline.append (newLine(s));
+			s="";
+		} else
+		{
+			if (i<0 && j>0)
+			{	// no ws found in actual search
+				if (s.length()<=textwidth)
+				{
+					textline.append (newLine(s));
+					s="";
+				} else
+				{
+					textline.append (newLine(s.left(j)));
+					s=s.mid(j+1,s.length());
+					j=0;
+				}		    
+			} else
+			{
+				if (i>= 0 && i<=static_cast <int> (textwidth))
+				{   // there is a ws in textwidth
+					if (br>0)
+					{
+						// here is a linebreak
+						textline.append (newLine(s.left(i)));
+						s=s.mid(i+br,s.length());
+						i=0;
+						j=0;
+						br=0;
+					} else
+					{
+						j=i;
+						i++;
+					}
+				} else
+				{
+					if (i>static_cast <int> (textwidth)  )
+					{	
+						if (j>0)
+						{   // a ws out of textwidth, but we have also one in
+							textline.append (newLine(s.left(j)));
+							s=s.mid(j+1,s.length());
+							i=0;
+							j=0;
+						} else
+						{   // a ws out of text, but none in
+							textline.append (newLine(s.left(i)));
+							s=s.mid(i+1,s.length());
+							i=0;
+						}
+					}
+				} 
+			}	  
+		}		    
+    }
+	setVisibility (visible);
+	calcBBoxSize();
+}
+
+QString HeadingObj::text ()
+{
+    return heading;
+}
+
+void HeadingObj::setFont (QFont f)
+{
+    if (font!=f) 
+    {
+		font=f;
+		setText (text());
+    }
+}
+
+QFont HeadingObj::getFont()
+{
+    return font;
+}    
+	
+	
+void HeadingObj::setColor (QColor c)
+{
+    if (color!=c)
+    {
+		color=c;
+		QCanvasText *t;
+		for (t=textline.first(); t; t=textline.next() )
+			t->setColor(c);
+    }	    
+}
+
+QColor HeadingObj::getColor()
+{
+    return color;
+}    
+
+void HeadingObj::setVisibility (bool v)
+{
+    MapObj::setVisibility(v);
+    QCanvasText *t;
+    for (t=textline.first(); t; t=textline.next() )
+		if (v)
+			t->show();
+		else
+			t->hide();
+}
+
+int HeadingObj::getHeight ()
+{
+	return bbox.height();
+}
+
+int HeadingObj::getWidth()
+{
+	return bbox.width();
+}
+