內容

• 公共函數
• 重實現公共函數
• 詳細描述

QGraphicsSimpleTextItem 類

The QGraphicsSimpleTextItem class provides a simple text path item that you can add to a QGraphicsScene . 更多...

頭：	#include <QGraphicsSimpleTextItem>
qmake:	QT += widgets
Since:	Qt 4.2
繼承：	QAbstractGraphicsShapeItem

• 所有成員列錶，包括繼承成員

公共函數

	QGraphicsSimpleTextItem (QGraphicsItem * parent = Q_NULLPTR)
	QGraphicsSimpleTextItem (const QString & text , QGraphicsItem * parent = Q_NULLPTR)
	~QGraphicsSimpleTextItem ()
QFont	font () const
void	setFont (const QFont & font )
void	setText (const QString & text )
QString	text () const

重實現公共函數

virtual QRectF	boundingRect () const
virtual bool	contains (const QPointF & point ) const
virtual bool	isObscuredBy (const QGraphicsItem * item ) const
virtual QPainterPath	opaqueArea () const
virtual void	paint (QPainter * painter , const QStyleOptionGraphicsItem * option , QWidget * widget )
virtual QPainterPath	shape () const
virtual int	type () const

• 6 公共函數繼承自 QAbstractGraphicsShapeItem
• 176 公共函數繼承自 QGraphicsItem

額外繼承成員

• 2 靜態公共成員繼承自 QGraphicsItem
• 24 保護函數繼承自 QGraphicsItem

詳細描述

The QGraphicsSimpleTextItem class provides a simple text path item that you can add to a QGraphicsScene .

To set the item's text, you can either pass a QString to QGraphicsSimpleTextItem 's constructor, or call setText () to change the text later. To set the text fill color, call setBrush ().

The simple text item can have both a fill and an outline; setBrush () will set the text fill (i.e., text color), and setPen () sets the pen that will be used to draw the text outline. (The latter can be slow, especially for complex pens, and items with long text content.) If all you want is to draw a simple line of text, you should call setBrush () only, and leave the pen unset; QGraphicsSimpleTextItem 's pen is by default Qt::NoPen .

QGraphicsSimpleTextItem uses the text's formatted size and the associated font to provide a reasonable implementation of boundingRect (), shape ()，和 contains (). You can set the font by calling setFont ().

QGraphicsSimpleText 不顯示富文本；相反，可使用 QGraphicsTextItem ，其提供完整文本控製能力。

另請參閱 QGraphicsTextItem , QGraphicsPathItem , QGraphicsRectItem , QGraphicsEllipseItem , QGraphicsPixmapItem , QGraphicsPolygonItem , QGraphicsLineItem ，和 圖形視圖框架 .

成員函數文檔編製

QGraphicsSimpleTextItem:: QGraphicsSimpleTextItem ( QGraphicsItem * parent = Q_NULLPTR)

構造 QGraphicsSimpleTextItem .

parent 被傳遞給 QGraphicsItem 的構造函數。

另請參閱 QGraphicsScene::addItem ().

QGraphicsSimpleTextItem:: QGraphicsSimpleTextItem (const QString & text , QGraphicsItem * parent = Q_NULLPTR)

構造 QGraphicsSimpleTextItem ，使用 text 作為默認純文本。

parent 被傳遞給 QGraphicsItem 的構造函數。

另請參閱 QGraphicsScene::addItem ().

QGraphicsSimpleTextItem:: ~QGraphicsSimpleTextItem ()

銷毀 QGraphicsSimpleTextItem .

[虛擬] QRectF QGraphicsSimpleTextItem:: boundingRect () const

重實現自 QGraphicsItem::boundingRect ().

[虛擬] bool QGraphicsSimpleTextItem:: contains (const QPointF & point ) const

重實現自 QGraphicsItem::contains ().

QFont QGraphicsSimpleTextItem:: font () const

返迴用於繪製項文本的字體。

另請參閱 setFont ().

[虛擬] bool QGraphicsSimpleTextItem:: isObscuredBy (const QGraphicsItem * item ) const

重實現自 QGraphicsItem::isObscuredBy ().

[虛擬] QPainterPath QGraphicsSimpleTextItem:: opaqueArea () const

重實現自 QGraphicsItem::opaqueArea ().

[虛擬] void QGraphicsSimpleTextItem:: paint ( QPainter * painter , const QStyleOptionGraphicsItem * option , QWidget * widget )

重實現自 QGraphicsItem::paint ().

void QGraphicsSimpleTextItem:: setFont (const QFont & font )

Sets the font that is used to draw the item's text to font .

另請參閱 font ().

void QGraphicsSimpleTextItem:: setText (const QString & text )

Sets the item's text to text . The text will be displayed as plain text. Newline characters ('\n') as well as characters of type QChar::LineSeparator will cause item to break the text into multiple lines.

另請參閱 text ().

[虛擬] QPainterPath QGraphicsSimpleTextItem:: shape () const

重實現自 QGraphicsItem::shape ().

QString QGraphicsSimpleTextItem:: text () const

返迴項的文本。

另請參閱 setText ().

[虛擬] int QGraphicsSimpleTextItem:: type () const

重實現自 QGraphicsItem::type ().