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kdvi'ScrollBox (./kdegraphics/kdvi/scrbox.h:15)

class ScrollBox: public QFrame
{
	Q_OBJECT

public:
	ScrollBox( QWidget * parent = 0, const char * name = 0 );

public slots:
	void	setPageSize( QSize );
	void	setViewSize( QSize );
	void	setViewPos( QPoint );

signals:
	void	valueChanged( QPoint );
	void	button2Pressed(); 
	void	button3Pressed(); 

protected:
	void	mousePressEvent ( QMouseEvent *);
	void	mouseMoveEvent ( QMouseEvent *);
	void	drawContents ( QPainter *);

private:
	QPoint	viewpos, mouse;
	QSize	pagesize;
	QSize	viewsize;
};

kdvi'ScrollBox::ScrollBox() (./kdegraphics/kdvi/scrbox.cpp:17)

ScrollBox::ScrollBox( QWidget * parent , const char * name )
    : QFrame( parent, name )
{
	setFrameStyle( Panel | Sunken );
}

kdvi'ScrollBox::mousePressEvent() (./kdegraphics/kdvi/scrbox.cpp:23)

void ScrollBox::mousePressEvent ( QMouseEvent *e )
{
	mouse = e->pos();
	if ( e->button() == RightButton )
		emit button3Pressed();
	if ( e->button() == MidButton )
		emit button2Pressed();
}

kdvi'ScrollBox::mouseMoveEvent() (./kdegraphics/kdvi/scrbox.cpp:32)

void ScrollBox::mouseMoveEvent ( QMouseEvent *e )
{
	if (e->state() != LeftButton)
		return;
	int dx = ( e->pos().x() - mouse.x() ) *
		 pagesize.width() /
		 width();
	int dy = ( e->pos().y() - mouse.y() ) * 
		 pagesize.height() /
		 height();
	
        // Notify the word what the view position has changed
        // The word in turn will notify as that view position has changed
        // Even if coordinates are out of range JScrollView hendle
        // this properly
        emit valueChanged( viewpos + QPoint( dx, dy ) );

	mouse = e->pos();
}

kdvi'ScrollBox::drawContents() (./kdegraphics/kdvi/scrbox.cpp:52)

void ScrollBox::drawContents ( QPainter *p )
{
        if (pagesize.isNull())
		return;

	QRect c( contentsRect() );

	int len = pagesize.width();
	int x = c.x() + c.width() * viewpos.x() / len;
	int w = c.width() * viewsize.width() / len ;
	if ( w > c.width() ) w = c.width();

	len = pagesize.height();
	int y = c.y() + c.height() * viewpos.y() / len;
	int h = c.height() * viewsize.height() / len;
	if ( h > c.height() ) h = c.height();

        qDrawShadePanel( p, x, y, w, h, colorGroup(), FALSE, 1, 0);
}

kdvi'ScrollBox::setPageSize() (./kdegraphics/kdvi/scrbox.cpp:72)

void ScrollBox::setPageSize( QSize s )
{
	pagesize = s;
	repaint();
}

kdvi'ScrollBox::setViewSize() (./kdegraphics/kdvi/scrbox.cpp:78)

void ScrollBox::setViewSize( QSize s )
{
	viewsize = s;
	repaint();
}

kdvi'ScrollBox::setViewPos() (./kdegraphics/kdvi/scrbox.cpp:84)

void ScrollBox::setViewPos( QPoint pos )
{
        viewpos = pos;
        repaint();
}