A Widget which displays a QwtText. More...

#include <qwt_text_label.h>

Inheritance diagram for QwtTextLabel:

Collaboration diagram for QwtTextLabel:

Classes
class	PrivateData
Public Slots
void	setText (const QString &, QwtText::TextFormat textFormat=QwtText::AutoText)
virtual void	setText (const QwtText &)
void	clear ()
	Clear the text and all QwtText attributes.
Public Member Functions
	QwtTextLabel (QWidget *parent=NULL)
	QwtTextLabel (QWidget parent, const char name)
	QwtTextLabel (const QwtText &, QWidget *parent=NULL)
virtual	~QwtTextLabel ()
	Destructor.
const QwtText &	text () const
	Return the text.
int	indent () const
void	setIndent (int)
int	margin () const
void	setMargin (int)
virtual QSize	sizeHint () const
	Return label's margin in pixels.
virtual QSize	minimumSizeHint () const
	Return a minimum size hint.
virtual int	heightForWidth (int) const
QRect	textRect () const
Protected Member Functions
virtual void	paintEvent (QPaintEvent *e)
virtual void	drawContents (QPainter *)
	Redraw the text and focus indicator.
virtual void	drawText (QPainter *, const QRect &)
	Redraw the text.
Properties
int	indent
	Return label's text indent in pixels.
int	margin
	Return label's text indent in pixels.

Detailed Description

A Widget which displays a QwtText.

Definition at line 25 of file qwt_text_label.h.

Constructor & Destructor Documentation

QwtTextLabel::QwtTextLabel ( QWidget * parent = NULL ) [explicit]

Constructs an empty label.

Parameters:

parent Parent widget

Definition at line 36 of file qwt_text_label.cpp.

                                         :
    QFrame(parent)
{
    init();
}

QwtTextLabel::QwtTextLabel	(	QWidget *	parent,
		const char *	name
	)		`[explicit]`

Constructs an empty label.

Parameters:

parent	Parent widget
name	Object name

Definition at line 48 of file qwt_text_label.cpp.

                                                           :
    QFrame(parent, name)
{
    init();
}

QwtTextLabel::QwtTextLabel	(	const QwtText &	text,
		QWidget *	parent = `NULL`
	)		`[explicit]`

Constructs a label that displays the text, text

Parameters:

parent	Parent widget
text	Text

Definition at line 60 of file qwt_text_label.cpp.

References text(), and QwtTextLabel::PrivateData::text.

                                                              :
    QFrame(parent)
{
    init();
    d_data->text = text;
}

QwtTextLabel::~QwtTextLabel ( ) [virtual]

Destructor.

Definition at line 68 of file qwt_text_label.cpp.

{
    delete d_data;
}

Member Function Documentation

void QwtTextLabel::clear ( ) [slot]

Clear the text and all QwtText attributes.

Definition at line 113 of file qwt_text_label.cpp.

References QwtTextLabel::PrivateData::text.

{
    d_data->text = QwtText();

    update();
    updateGeometry();
}

void QwtTextLabel::drawContents ( QPainter * painter ) [protected, virtual]

Redraw the text and focus indicator.

Definition at line 244 of file qwt_text_label.cpp.

References QwtPainter::drawFocusRect(), drawText(), margin(), and textRect().

Referenced by paintEvent(), and QwtLegendItem::paintEvent().

{
    const QRect r = textRect();
    if ( r.isEmpty() )
        return;

    painter->setFont(font());
#if QT_VERSION < 0x040000
    painter->setPen(palette().color(QPalette::Active, QColorGroup::Text));
#else
    painter->setPen(palette().color(QPalette::Active, QPalette::Text));
#endif

    drawText(painter, r);

    if ( hasFocus() )
    {
        const int margin = 2;

        QRect focusRect = contentsRect();
        focusRect.setRect(focusRect.x() + margin, focusRect.y() + margin,
            focusRect.width() - 2 * margin - 2, 
            focusRect.height() - 2 * margin - 2);

        QwtPainter::drawFocusRect(painter, this, focusRect);
    }
}

void QwtTextLabel::drawText	(	QPainter *	painter,
		const QRect &	textRect
	)		`[protected, virtual]`

Redraw the text.

Reimplemented in QwtLegendItem.

Definition at line 273 of file qwt_text_label.cpp.

References QwtText::draw(), and QwtTextLabel::PrivateData::text.

Referenced by drawContents().

{
    d_data->text.draw(painter, textRect);
}

int QwtTextLabel::heightForWidth ( int width ) const [virtual]

Returns the preferred height for this widget, given the width.

Parameters:

width Width

Definition at line 196 of file qwt_text_label.cpp.

References QwtText::heightForWidth(), QwtTextLabel::PrivateData::indent, indent(), QwtText::renderFlags(), and QwtTextLabel::PrivateData::text.

Referenced by QwtPlotLayout::minimumSizeHint().

{
    const int renderFlags = d_data->text.renderFlags();

    int indent = d_data->indent;
    if ( indent <= 0 )
        indent = defaultIndent();

    width -= 2 * frameWidth();
    if ( renderFlags & Qt::AlignLeft || renderFlags & Qt::AlignRight )
        width -= indent;

    int height = d_data->text.heightForWidth(width, font());
    if ( renderFlags & Qt::AlignTop || renderFlags & Qt::AlignBottom )
        height += indent;

    height += 2 * frameWidth();

    return height;
}

int QwtTextLabel::indent ( ) const

Referenced by heightForWidth(), minimumSizeHint(), setIndent(), and textRect().

int QwtTextLabel::margin ( ) const

Referenced by drawContents(), QwtLegendItem::drawItem(), QwtLegendItem::paintEvent(), QwtLegendItem::setIdentifierWidth(), setMargin(), and QwtLegendItem::setSpacing().

QSize QwtTextLabel::minimumSizeHint ( ) const [virtual]

Return a minimum size hint.

Definition at line 167 of file qwt_text_label.cpp.

References QwtTextLabel::PrivateData::indent, indent(), QwtTextLabel::PrivateData::margin, QwtText::renderFlags(), QwtTextLabel::PrivateData::text, and QwtText::textSize().

Referenced by sizeHint().

{
    QSize sz = d_data->text.textSize(font());

    int mw = 2 * (frameWidth() + d_data->margin);
    int mh = mw;

    int indent = d_data->indent;
    if ( indent <= 0 )
        indent = defaultIndent();

    if ( indent > 0 )
    {
        const int align = d_data->text.renderFlags();
        if ( align & Qt::AlignLeft || align & Qt::AlignRight )
            mw += d_data->indent;
        else if ( align & Qt::AlignTop || align & Qt::AlignBottom )
            mh += d_data->indent;
    }
        
    sz += QSize(mw, mh);

    return sz;
}

void QwtTextLabel::paintEvent ( QPaintEvent * event ) [protected, virtual]

Qt paint event

Parameters:

event Paint event

Reimplemented in QwtLegendItem.

Definition at line 221 of file qwt_text_label.cpp.

References drawContents().

{
#if QT_VERSION >= 0x040000
    QPainter painter(this);

    if ( !contentsRect().contains( event->rect() ) )
    {
        painter.save();
        painter.setClipRegion( event->region() & frameRect() );
        drawFrame( &painter );
        painter.restore();
    }

    painter.setClipRegion(event->region() & contentsRect());

    drawContents( &painter );
#else // QT_VERSION < 0x040000
    QFrame::paintEvent(event);
#endif

}

void QwtTextLabel::setIndent ( int indent )

Set label's text indent in pixels

Parameters:

indent Indentation in pixels

Definition at line 131 of file qwt_text_label.cpp.

References indent(), and QwtTextLabel::PrivateData::indent.

Referenced by QwtLegendItem::setIdentifierWidth(), and QwtLegendItem::setSpacing().

{
    if ( indent < 0 )
        indent = 0;

    d_data->indent = indent;

    update();
    updateGeometry();
}

void QwtTextLabel::setMargin ( int margin )

Set label's margin in pixels

Parameters:

margin Margin in pixels

Definition at line 152 of file qwt_text_label.cpp.

References margin(), and QwtTextLabel::PrivateData::margin.

Referenced by QwtLegendItem::setItemMode().

{
    d_data->margin = margin;

    update();
    updateGeometry();
}

void QwtTextLabel::setText ( const QwtText & text ) [virtual, slot]

Change the label's text

Parameters:

text New text

Reimplemented in QwtLegendItem.

Definition at line 98 of file qwt_text_label.cpp.

References text(), and QwtTextLabel::PrivateData::text.

{
    d_data->text = text;

    update();
    updateGeometry();
}

void QwtTextLabel::setText	(	const QString &	text,
		QwtText::TextFormat	textFormat = `QwtText::AutoText`
	)		`[slot]`

Change the label's text, keeping all other QwtText attributes

Parameters:

text	New text
textFormat	Format of text

See also:: QwtText

Definition at line 86 of file qwt_text_label.cpp.

References QwtText::setText(), and QwtTextLabel::PrivateData::text.

Referenced by QwtPlotPrintFilter::reset().

{
    d_data->text.setText(text, textFormat);

    update();
    updateGeometry();
}

QSize QwtTextLabel::sizeHint ( ) const [virtual]

Return label's margin in pixels.

Reimplemented in QwtLegendItem.

Definition at line 161 of file qwt_text_label.cpp.

References minimumSizeHint().

{
    return minimumSizeHint();
}

const QwtText & QwtTextLabel::text ( ) const

Return the text.

Definition at line 107 of file qwt_text_label.cpp.

References QwtTextLabel::PrivateData::text.

Referenced by QwtLegendItem::drawItem(), QwtPlotLayout::LayoutData::init(), QwtPlot::print(), QwtPlot::printTitle(), QmitkHistogramWidget::QmitkHistogramWidget(), QwtTextLabel(), QwtPlotPrintFilter::reset(), setText(), and QwtLegendItem::setText().

{
    return d_data->text;
}

QRect QwtTextLabel::textRect ( ) const

Calculate the rect for the text in widget coordinates

Returns:: Text rect

Definition at line 282 of file qwt_text_label.cpp.

References QwtTextLabel::PrivateData::indent, indent(), QwtTextLabel::PrivateData::margin, QwtText::renderFlags(), and QwtTextLabel::PrivateData::text.

Referenced by drawContents().

{
    QRect r = contentsRect();

    if ( !r.isEmpty() && d_data->margin > 0 )
    {
        r.setRect(r.x() + d_data->margin, r.y() + d_data->margin,
            r.width() - 2 * d_data->margin, r.height() - 2 * d_data->margin );
    }

    if ( !r.isEmpty() )
    {
        int indent = d_data->indent;
        if ( indent <= 0 )
            indent = defaultIndent();

        if ( indent > 0 )
        {
            const int renderFlags = d_data->text.renderFlags();

            if ( renderFlags & Qt::AlignLeft )
                r.setX(r.x() + indent);
            else if ( renderFlags & Qt::AlignRight )
                r.setWidth(r.width() - indent);
            else if ( renderFlags & Qt::AlignTop )
                r.setY(r.y() + indent);
            else if ( renderFlags & Qt::AlignBottom )
                r.setHeight(r.height() - indent);
        }
    }

    return r;
}

Property Documentation

int QwtTextLabel::indent [read, write]

Return label's text indent in pixels.

Definition at line 29 of file qwt_text_label.h.

int QwtTextLabel::margin [read, write]

Return label's text indent in pixels.

Definition at line 30 of file qwt_text_label.h.

The documentation for this class was generated from the following files:

QwtTextLabel Class Reference

Classes

Public Slots

Public Member Functions

Protected Member Functions

Properties

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Property Documentation