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
typedef QFlags< LayoutAttribute > LayoutAttributes

Public Member Functions¶

QwtText ()
QwtText (const 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
double heightForWidth (double width, const QFont &) const
QSizeF textSize () const
QSizeF textSize (const 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 *)

typedef QFlags<LayoutAttribute > QwtText::LayoutAttributes¶

An ORed combination of LayoutAttribute values.

Definition at line 143 of file qwt_text.h.

typedef QFlags<PaintAttribute > QwtText::PaintAttributes¶

An ORed combination of PaintAttribute values.

Definition at line 126 of file qwt_text.h.

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.

Definition at line 132 of file qwt_text.h.

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.

Definition at line 114 of file qwt_text.h.

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. In earlier versions of Qwt such an engine was included - since Qwt 6.2 it can be found here: https://github.com/uwerat/qwt-mml-dev

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.

Definition at line 64 of file qwt_text.h.

QwtText::QwtText ()¶

Constructor

Definition at line 201 of file qwt_text.cpp.

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

Constructor

Parameters

Definition at line 215 of file qwt_text.cpp.

QBrush QwtText::backgroundBrush () const¶

Returns

See also

Definition at line 451 of file qwt_text.cpp.

QPen QwtText::borderPen () const¶

Returns

See also

Definition at line 430 of file qwt_text.cpp.

double QwtText::borderRadius () const¶

Returns

See also

Definition at line 409 of file qwt_text.cpp.

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

Draw a text into a rectangle

Parameters

Definition at line 615 of file qwt_text.cpp.

double QwtText::heightForWidth (double width) const¶

Find the height for a given width

Parameters

Returns

Definition at line 522 of file qwt_text.cpp.

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

Find the height for a given width

Parameters

Returns

Definition at line 535 of file qwt_text.cpp.

bool QwtText::isEmpty () const¶

Returns

Definition at line 739 of file qwt_text.cpp.

bool QwtText::isNull () const¶

Returns

Definition at line 733 of file qwt_text.cpp.

int QwtText::renderFlags () const¶

Returns

See also

Definition at line 317 of file qwt_text.cpp.

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

Set the background brush

Parameters

See also

Definition at line 441 of file qwt_text.cpp.

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

Set the background pen

Parameters

See also

Definition at line 420 of file qwt_text.cpp.

void QwtText::setBorderRadius (double radius)¶

Set the radius for the corners of the border frame

Parameters

See also

Definition at line 400 of file qwt_text.cpp.

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

Set the pen color used for drawing the text.

Parameters

Note

Definition at line 365 of file qwt_text.cpp.

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

Set the font.

Parameters

Note

Definition at line 329 of file qwt_text.cpp.

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

Change a layout attribute

Parameters

See also

Definition at line 494 of file qwt_text.cpp.

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

Change a paint attribute

Parameters

Note

See also

Definition at line 466 of file qwt_text.cpp.

void QwtText::setRenderFlags (int renderFlags)¶

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

Parameters

See also

Note

Definition at line 304 of file qwt_text.cpp.

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

Assign a new text content

Parameters

See also

Definition at line 277 of file qwt_text.cpp.

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

Warning

Definition at line 713 of file qwt_text.cpp.

bool QwtText::testLayoutAttribute (LayoutAttribute attribute) const¶

Test a layout attribute

Parameters

Returns

See also

Definition at line 510 of file qwt_text.cpp.

bool QwtText::testPaintAttribute (PaintAttribute attribute) const¶

Test a paint attribute

Parameters

Returns

See also

Definition at line 482 of file qwt_text.cpp.

QString QwtText::text () const¶

Returns

See also

Definition at line 289 of file qwt_text.cpp.

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 returned.

Parameters

Returns

Definition at line 694 of file qwt_text.cpp.

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

Definition at line 727 of file qwt_text.cpp.

QSizeF QwtText::textSize () const¶

Returns the size, that is needed to render text

Returns

Definition at line 570 of file qwt_text.cpp.

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

Returns the size, that is needed to render text

Parameters

Returns

Definition at line 581 of file qwt_text.cpp.

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

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

Parameters

Returns

See also

Definition at line 386 of file qwt_text.cpp.

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

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

Parameters

Returns

See also

Definition at line 350 of file qwt_text.cpp.