Public Types¶

enum TextFormat { AutoText = 0, PlainText, RichText, MathMLText, TeXText, OtherFormat = 100 }
Text format. enum PaintAttribute { PaintUsingTextFont = 0x01, PaintUsingTextColor = 0x02, PaintBackground = 0x04 }
Paint Attributes. enum LayoutAttribute { MinimumLayout = 0x01 }
Layout Attributes The layout attributes affects some aspects of the layout of the text. typedef QFlags< PaintAttribute > PaintAttributes
Paint attributes. typedef QFlags< LayoutAttribute > LayoutAttributes
Layout attributes.

Public Member Functions¶

QwtText (const QString &=QString(), TextFormat textFormat=AutoText)
QwtText (const QwtText &)
Copy constructor. ~QwtText ()
Destructor. QwtText & operator= (const QwtText &)
Assignment operator. bool operator== (const QwtText &) const
Relational operator. bool operator!= (const QwtText &) const
Relational operator. void setText (const QString &, QwtText::TextFormat textFormat=AutoText)
QString text () const
bool isNull () const
bool isEmpty () const
void setFont (const QFont &)
QFont font () const
Return the font. QFont usedFont (const QFont &) const
void setRenderFlags (int)
Change the render flags. int renderFlags () const
void setColor (const QColor &)
QColor color () const
Return the pen color, used for painting the text. QColor usedColor (const QColor &) const
void setBorderRadius (double)
double borderRadius () const
void setBorderPen (const QPen &)
QPen borderPen () const
void setBackgroundBrush (const QBrush &)
QBrush backgroundBrush () const
void setPaintAttribute (PaintAttribute, bool on=true)
bool testPaintAttribute (PaintAttribute) const
void setLayoutAttribute (LayoutAttribute, bool on=true)
bool testLayoutAttribute (LayoutAttribute) const
double heightForWidth (double width, const QFont &=QFont()) const
QSizeF textSize (const QFont &=QFont()) const
void draw (QPainter *painter, const QRectF &rect) const

Static Public Member Functions¶

static const QwtTextEngine * textEngine (const QString &text, QwtText::TextFormat=AutoText)
static const QwtTextEngine * textEngine (QwtText::TextFormat)
Find the text engine for a text format. static void setTextEngine (QwtText::TextFormat, QwtTextEngine *)

enum QwtText::LayoutAttribute¶

Layout Attributes The layout attributes affects some aspects of the layout of the text.

Enumerator

MinimumLayout

Layout the text without its margins. This mode is useful if a text needs to be aligned accurately, like the tick labels of a scale. If QwtTextEngine::textMargins is not implemented for the format of the text, MinimumLayout has no effect.

enum QwtText::PaintAttribute¶

Paint Attributes. Font and color and background are optional attributes of a QwtText. The paint attributes hold the information, if they are set.

Enumerator

PaintUsingTextFont

The text has an individual font.

PaintUsingTextColor

The text has an individual color.

PaintBackground

The text has an individual background.

enum QwtText::TextFormat¶

Text format. The text format defines the QwtTextEngine, that is used to render the text.

See also:

Enumerator

AutoText

The text format is determined using QwtTextEngine::mightRender() for all available text engines in increasing order > PlainText. If none of the text engines can render the text is rendered like QwtText::PlainText.

PlainText

Draw the text as it is, using a QwtPlainTextEngine.

RichText

Use the Scribe framework (Qt Rich Text) to render the text.

MathMLText

Use a MathML (http://en.wikipedia.org/wiki/MathML) render engine to display the text. The Qwt MathML extension offers such an engine based on the MathML renderer of the former Qt solutions package. To enable MathML support the following code needs to be added to the application:

QwtText::setTextEngine( QwtText::MathMLText, new QwtMathMLTextEngine() );

TeXText

Use a TeX (http://en.wikipedia.org/wiki/TeX) render engine to display the text ( not implemented yet ).

OtherFormat

The number of text formats can be extended using setTextEngine. Formats >= QwtText::OtherFormat are not used by Qwt.

QwtText::QwtText (const QString & text = QString(), QwtText::TextFormat textFormat = AutoText)¶

Constructor

Parameters:

QBrush QwtText::backgroundBrush () const¶

Returns:

See also:

QPen QwtText::borderPen () const¶

Returns:

See also:

double QwtText::borderRadius () const¶

Returns:

See also:

void QwtText::draw (QPainter * painter, const QRectF & rect) const¶

Draw a text into a rectangle

Parameters:

double QwtText::heightForWidth (double width, const QFont & defaultFont = QFont()) const¶

Find the height for a given width

Parameters:

Returns:

bool QwtText::isEmpty () const [inline]¶

Returns:

bool QwtText::isNull () const [inline]¶

Returns:

int QwtText::renderFlags () const¶

Returns:

See also:

void QwtText::setBackgroundBrush (const QBrush & brush)¶

Set the background brush

Parameters:

See also:

void QwtText::setBorderPen (const QPen & pen)¶

Set the background pen

Parameters:

See also:

void QwtText::setBorderRadius (double radius)¶

Set the radius for the corners of the border frame

Parameters:

See also:

void QwtText::setColor (const QColor & color)¶

Set the pen color used for drawing the text.

Parameters:

Note:

void QwtText::setFont (const QFont & font)¶

Set the font.

Parameters:

Note:

void QwtText::setLayoutAttribute (LayoutAttribute attribute, bool on = true)¶

Change a layout attribute

Parameters:

See also:

void QwtText::setPaintAttribute (PaintAttribute attribute, bool on = true)¶

Change a paint attribute

Parameters:

Note:

See also:

void QwtText::setRenderFlags (int renderFlags)¶

Change the render flags. The default setting is Qt::AlignCenter

Parameters:

See also:

Note:

void QwtText::setText (const QString & text, QwtText::TextFormat textFormat = AutoText)¶

Assign a new text content

Parameters:

See also:

void QwtText::setTextEngine (QwtText::TextFormat format, QwtTextEngine * engine) [static]¶

Assign/Replace a text engine for a text format

With setTextEngine it is possible to extend Qwt with other types of text formats.

For QwtText::PlainText it is not allowed to assign a engine == NULL.

Parameters:

See also:

Warning:

bool QwtText::testLayoutAttribute (LayoutAttribute attribute) const¶

Test a layout attribute

Parameters:

Returns:

See also:

bool QwtText::testPaintAttribute (PaintAttribute attribute) const¶

Test a paint attribute

Parameters:

Returns:

See also:

QString QwtText::text () const¶

Returns:

See also:

const QwtTextEngine * QwtText::textEngine (const QString & text, QwtText::TextFormat format = AutoText) [static]¶

Find the text engine for a text format

In case of QwtText::AutoText the first text engine (beside QwtPlainTextEngine) is returned, where QwtTextEngine::mightRender returns true. If there is none QwtPlainTextEngine is returned.

If no text engine is registered for the format QwtPlainTextEngine is returnd.

Parameters:

Returns:

const QwtTextEngine * QwtText::textEngine (QwtText::TextFormat format) [static]¶

Find the text engine for a text format. textEngine can be used to find out if a text format is supported.

Parameters:

Returns:

QSizeF QwtText::textSize (const QFont & defaultFont = QFont()) const¶

Returns the size, that is needed to render text

Parameters:

Returns:

QColor QwtText::usedColor (const QColor & defaultColor) const¶

Return the color of the text, if it has one. Otherwise return defaultColor.

Parameters:

Returns:

See also:

QFont QwtText::usedFont (const QFont & defaultFont) const¶

Return the font of the text, if it has one. Otherwise return defaultFont.

Parameters:

Returns:

See also: