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headingobj.cpp
author insilmaril
Tue Sep 04 13:53:33 2007 +0000 (2007-09-04)
changeset 594 88d558ce079d
parent 428 9ae68208e2ff
child 657 8e596f73f258
permissions -rw-r--r--
Fixed broken xLink handling 
     1 #include "headingobj.h"

     2 #include <qregexp.h>

     3 

     4 /////////////////////////////////////////////////////////////////

     5 // HeadingObj

     6 /////////////////////////////////////////////////////////////////

     7 HeadingObj::HeadingObj() : MapObj()

     8 {

     9 //    cout << "Const HeadingObj ()\n";

    10     init ();

    11 }

    12 

    13 HeadingObj::HeadingObj(QGraphicsScene *s) :MapObj(s)

    14 {

    15 //    cout << "Const HeadingObj (s)\n";

    16     init ();

    17 }

    18 

    19 HeadingObj::~HeadingObj()

    20 {

    21 //	cout << "Destr. HeadingObj "<<heading.ascii()<<endl;

    22 	while (!textline.isEmpty())

    23 		delete textline.takeFirst();

    24 }

    25 

    26 void HeadingObj::init()

    27 {

    28     textwidth=40;

    29     color=QColor ("black");

    30     font=QFont();

    31 	heading="";

    32 }

    33 

    34 void HeadingObj::copy(HeadingObj *other)

    35 {

    36     MapObj::copy (other);

    37     textwidth=other->textwidth;

    38     color=other->color;

    39     font=other->font;

    40     setText (other->text() );

    41 }

    42 

    43 void HeadingObj::move(double x, double y)

    44 {

    45     MapObj::move(x,y);

    46 

    47     qreal h;	// height of a textline

    48     qreal ho;	// offset of height while drawing all lines

    49 

    50     if (!textline.isEmpty() )

    51 		h=textline.first()->boundingRect().height();

    52     else

    53 		h=2;

    54     ho=0;

    55 	for (int i=0; i<textline.size(); ++i)

    56     {

    57 		textline.at(i)->setPos(x,y+ho);

    58 		ho=ho+h;

    59     }	

    60 }

    61 

    62 

    63 void HeadingObj::moveBy(double x, double y)

    64 {

    65     move (x+absPos.x(),y+absPos.y() );

    66 }

    67 

    68 void HeadingObj::positionBBox()

    69 {

    70     bbox.setX (absPos.x());

    71     bbox.setY (absPos.y());

    72 }

    73 

    74 void HeadingObj::calcBBoxSize()

    75 {	

    76 	qreal w=0;

    77 	qreal h=0;

    78 	// Using Backspace an empty heading might easily be created, then there

    79 	// would be textline.first()==NULL This can be worked around by the following, but

    80 	// then no selection would be visible, thus we prevent it in ::setText()

    81 	if (!textline.isEmpty() )

    82 	{

    83 		for (int i=0; i<textline.size(); i++)

    84 		{

    85 			h+=textline.at(i)->boundingRect().height();

    86 			if (w<textline.at(i)->boundingRect().width() )

    87 				w=textline.at(i)->boundingRect().width();

    88 		}	

    89 	} 

    90     bbox.setSize (QSizeF(w,h));

    91 }

    92 

    93 //QGraphicsSimpleTextItem* HeadingObj::newLine(QString s)

    94 QGraphicsTextItem* HeadingObj::newLine(QString s)

    95 {

    96     //QGraphicsSimpleTextItem *t=new QGraphicsSimpleTextItem (s,0,scene);

    97     QGraphicsTextItem *t=new QGraphicsTextItem (s,0,scene);

    98     t->setFont (font);

    99     t->setZValue(Z_TEXT);

   100 	// TextItem

   101     t->setDefaultTextColor(color);

   102 	// SimpleTextItem

   103     //t->setBrush(color);

   104     return t;

   105 }

   106 

   107 void HeadingObj::setText (QString s)

   108 {

   109     heading=s;

   110 

   111     // remove old textlines and prepare generating new ones

   112 	while (!textline.isEmpty())

   113 		delete textline.takeFirst();

   114 

   115 	if (s.startsWith("<html>"))

   116 	{

   117 		QGraphicsTextItem *t=new QGraphicsTextItem ();

   118 		t->setFont (font);

   119 		t->setZValue(Z_TEXT);

   120 		t->setHtml (s);

   121 		t->setDefaultTextColor(color);

   122 		scene->addItem (t);

   123 		textline.append (t);

   124 		setVisibility (visible);

   125 		move (absPos.x(),absPos.y());

   126 		calcBBoxSize();

   127 		return;

   128 	}

   129 

   130 	// prevent empty textline, so at least a small selection stays

   131 	// visible for this heading

   132 	if (s.length()==0) s="  ";

   133 

   134     int i=0;	// index for actual search for ws

   135     int j=0;	// index of last ws

   136 	int k=0;	// index of "<br>" or similar linebreak

   137 	int br=0;	// width of found break, e.g. for <br> it is 4

   138 	QRegExp re("<br.*/>");

   139 	re.setMinimal (true);

   140 

   141     // set the text and wrap lines

   142     while (s.length()>0)

   143     {

   144 		// ok, some people wanted manual linebreaks, here we go

   145 		k=re.search (s,i);

   146 		if (k>=0)

   147 		{

   148 			br=re.cap(0).length();

   149 			i=k;

   150 		} else

   151 			i=s.find (" ",i,false);

   152 		if (i<0 && j==0)

   153 		{   // no ws found at all in s

   154 			// append whole s

   155 			textline.append (newLine(s));

   156 			s="";

   157 		} else

   158 		{

   159 			if (i<0 && j>0)

   160 			{	// no ws found in actual search

   161 				if (s.length()<=textwidth)

   162 				{

   163 					textline.append (newLine(s));

   164 					s="";

   165 				} else

   166 				{

   167 					textline.append (newLine(s.left(j)));

   168 					s=s.mid(j+1,s.length());

   169 					j=0;

   170 				}		    

   171 			} else

   172 			{

   173 				if (i>= 0 && i<=static_cast <int> (textwidth))

   174 				{   // there is a ws in textwidth

   175 					if (br>0)

   176 					{

   177 						// here is a linebreak

   178 						textline.append (newLine(s.left(i)));

   179 						s=s.mid(i+br,s.length());

   180 						i=0;

   181 						j=0;

   182 						br=0;

   183 					} else

   184 					{

   185 						j=i;

   186 						i++;

   187 					}

   188 				} else

   189 				{

   190 					if (i>static_cast <int> (textwidth)  )

   191 					{	

   192 						if (j>0)

   193 						{   // a ws out of textwidth, but we have also one in

   194 							textline.append (newLine(s.left(j)));

   195 							s=s.mid(j+1,s.length());

   196 							i=0;

   197 							j=0;

   198 						} else

   199 						{   // a ws out of text, but none in

   200 							textline.append (newLine(s.left(i)));

   201 							s=s.mid(i+1,s.length());

   202 							i=0;

   203 						}

   204 					}

   205 				} 

   206 			}	  

   207 		}		    

   208     }

   209 	setVisibility (visible);

   210 	move (absPos.x(),absPos.y());

   211 	calcBBoxSize();

   212 }

   213 

   214 QString HeadingObj::text ()

   215 {

   216     return heading;

   217 }

   218 

   219 void HeadingObj::setFont (QFont f)

   220 {

   221     if (font!=f) 

   222     {

   223 		font=f;

   224 		setText (text());

   225     }

   226 }

   227 

   228 QFont HeadingObj::getFont()

   229 {

   230     return font;

   231 }    

   232 	

   233 	

   234 void HeadingObj::setColor (QColor c)

   235 {

   236     if (color!=c)

   237     {

   238 		color=c;

   239 		for (int i=0; i<textline.size(); ++i)

   240 			// TextItem

   241 			textline.at(i)->setDefaultTextColor(c);

   242 			// SimpleTextItem

   243 			//textline.at(i)->setBrush(c);

   244     }	    

   245 }

   246 

   247 QColor HeadingObj::getColor()

   248 {

   249     return color;

   250 }    

   251 

   252 void HeadingObj::setVisibility (bool v)

   253 {

   254     MapObj::setVisibility(v);

   255 	for (int i=0; i<textline.size(); ++i)

   256 		if (v)

   257 			textline.at(i)->show();

   258 		else

   259 			textline.at(i)->hide();

   260 }

   261 

   262 qreal HeadingObj::getHeight ()

   263 {

   264 	return bbox.height();

   265 }

   266 

   267 qreal HeadingObj::getWidth()

   268 {

   269 	return bbox.width();

   270 }

   271
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