breaks up qpushbutton text in to multiple lines

LineBreakButton.cpp

// header

#include <qobject.h>
#include <qwidget.h>
#include <qpushbutton.h>

class LineBreakButton : public QPushButton {
    Q_OBJECT

    public:
        LineBreakButton( QWidget *parent, const char *name );
       ~LineBreakButton();
    
        virtual void setText( const QString &text );
};


// part of override implementation

#include <qwidget.h>
#include <qpushbutton.h>
#include <qstring.h>
#include <qstringlist.h>
#include <qfontmetrics.h>

#include "LineBreakButton.h"

//
// more trivial stuff here
//

void
LineBreakButton::setText( const QString &text ) {
    QString ftext = text.copy();
    QFontMetrics fm = QWidget::fontMetrics();

    // split the desired text using any existing newline breaks
    QStringList lines = QStringList::split( "\n", ftext );

    QStringList::iterator line = lines.begin();

    while ( line != lines.end() ) {
        // use any spaces to further split into words each line that we currently hold
        if ( ( *line ).find( ' ' ) != -1 && fm.width( *line ) >= this->width() ) {
            QStringList words = QStringList::split( " ", *line );
            QStringList::iterator word;
            QString phrase = "";

            // try to fit as many words as possible without drawing text out of widget area
            for ( word = words.begin(); word != words.end(); word++ ) {
                if ( fm.width( phrase + *word + " " ) >= this->width() )
                    break;

                phrase += *word + " ";
            }

            // check if there is a single word by its own that exceeds widget width
            // if so, simply draw it and advance the word iterator
            if ( "" == phrase ) {
                phrase += *word;
                word++;
            }

            // insert the new phrase and advance to the next line
            line = lines.remove( line );

            line = lines.insert( line, phrase );

            // find the next line after the current one that we have processed
            QStringList::iterator nextline = lines.begin();

            for ( ; nextline != lines.end() && nextline != line ; nextline++ )
                ;

            nextline++;

            // prepend the rest of the words (if any) to the next line item
            while ( word != words.end() ) {
                if ( nextline != lines.end() )
                    *nextline += " " + *word;
                else {
                    lines.append( *word );
                    nextline--;
                }

                word++;
            }
        } // end of line processing

        line++;
    }

    QButton::setText( lines.join( "\n" ) );

    return;
}