QwtPlainTextEngine类 参考

A text engine for plain texts 更多...

#include <qwt_text_engine.h>

类 QwtPlainTextEngine 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtPlainTextEngine ()
	Constructor
virtual double	heightForWidth (const QFont &font, int flags, const QString &text, double width) const override
	Find the height for a given width
virtual QSizeF	textSize (const QFont &font, int flags, const QString &text) const override
	Return the size needed to render text
virtual void	draw (QPainter *, const QRectF &rect, int flags, const QString &text) const override
	Draw the text in a clipping rectangle
virtual bool	mightRender (const QString &) const override
	Test if a string can be rendered by this text engine
virtual void	textMargins (const QFont &, const QString &, double &left, double &right, double &top, double &bottom) const override
	Return margins around the texts
Public 成员函数 继承自 QwtTextEngine
virtual	~QwtTextEngine ()
	Destructor

额外继承的成员函数
Protected 成员函数 继承自 QwtTextEngine
	QwtTextEngine ()
	Protected constructor

详细描述

A text engine for plain texts

QwtPlainTextEngine renders texts using the basic Qt classes QPainter and QFontMetrics.

参见

QwtRichTextEngine

构造及析构函数说明

QwtPlainTextEngine()

QwtPlainTextEngine::QwtPlainTextEngine

(

)

Constructor

Destructor

成员函数说明

draw()

void QwtPlainTextEngine::draw ( QPainter *  painter, const QRectF &  rect, int  flags, const QString &  text  ) const

overridevirtual

Draw the text in a clipping rectangle

A wrapper for QPainter::drawText.

参数

painter	Painter
rect	Clipping rectangle
flags	Bitwise OR of the flags used like in QPainter::drawText
text	Text to be rendered

参见

draw()

实现了 QwtTextEngine.

heightForWidth()

double QwtPlainTextEngine::heightForWidth ( const QFont &  font, int  flags, const QString &  text, double  width  ) const

overridevirtual

Find the height for a given width

参数

font	Font of the text
flags	Bitwise OR of the flags used like in QPainter::drawText
text	Text to be rendered
width	Width

返回

Calculated height

参见

textSize()

实现了 QwtTextEngine.

mightRender()

bool QwtPlainTextEngine::mightRender ( const QString &  ) const

overridevirtual

Test if a string can be rendered by this text engine

返回

Always true. All texts can be rendered by QwtPlainTextEngine

参见

mightRender()

实现了 QwtTextEngine.

textMargins()

void QwtPlainTextEngine::textMargins ( const QFont &  font, const QString &  , double &  left, double &  right, double &  top, double &  bottom  ) const

overridevirtual

Return margins around the texts

参数

font	Font of the text
left	Return 0
right	Return 0
top	Return value for the top margin
bottom	Return value for the bottom margin

参见

textMargins()

实现了 QwtTextEngine.

textSize()

QSizeF QwtPlainTextEngine::textSize ( const QFont &  font, int  flags, const QString &  text  ) const

overridevirtual

Return the size needed to render text

参数

font	Font of the text
flags	Bitwise OR of the flags used like in QPainter::drawText
text	Text to be rendered

返回

Calculated size

参见

heightForWidth()

实现了 QwtTextEngine.

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_text_engine.h
• /home/runner/work/QWT/QWT/src/plot/qwt_text_engine.cpp