內容

• 特性
• 公共函數
• 重實現公共函數
• 靜態公共成員
• 重實現保護函數
• 詳細描述

QPlainTextDocumentLayout 類

The QPlainTextDocumentLayout class implements a plain text layout for QTextDocument . 更多...

頭：	#include <QPlainTextDocumentLayout>
qmake:	QT += widgets
Since:	Qt 4.4
繼承：	QAbstractTextDocumentLayout

• 所有成員列錶，包括繼承成員
• 過時成員

特性

• cursorWidth : int

• 1 特性繼承自 QObject

公共函數

	QPlainTextDocumentLayout (QTextDocument * document )
virtual	~QPlainTextDocumentLayout ()
int	cursorWidth () const
void	ensureBlockLayout (const QTextBlock & block ) const
void	requestUpdate ()
void	setCursorWidth (int width )

重實現公共函數

virtual QRectF	blockBoundingRect (const QTextBlock & block ) const override
virtual QSizeF	documentSize () const override
virtual void	draw ( QPainter * , const QAbstractTextDocumentLayout::PaintContext & ) override
virtual QRectF	frameBoundingRect ( QTextFrame * ) const override
virtual int	hitTest ( const QPointF & , Qt::HitTestAccuracy ) const override
virtual int	pageCount () const override

• 15 公共函數繼承自 QAbstractTextDocumentLayout
• 31 公共函數繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 9 靜態公共成員繼承自 QObject

重實現保護函數

virtual void

documentChanged (int from , int charsRemoved , int charsAdded ) override

• 5 保護函數繼承自 QAbstractTextDocumentLayout
• 9 保護函數繼承自 QObject

額外繼承成員

• 1 公共槽繼承自 QObject
• 4 信號繼承自 QAbstractTextDocumentLayout
• 2 信號繼承自 QObject
• 5 保護函數繼承自 QAbstractTextDocumentLayout
• 9 保護函數繼承自 QObject

詳細描述

The QPlainTextDocumentLayout class implements a plain text layout for QTextDocument .

A QPlainTextDocumentLayout is required for text documents that can be display or edited in a QPlainTextEdit 。見 QTextDocument::setDocumentLayout ().

QPlainTextDocumentLayout 使用 QAbstractTextDocumentLayout API that QTextDocument requires, but redefines it partially in order to support plain text better. For instances, it does not operate on vertical pixels, but on paragraphs (called blocks) instead. The height of a document is identical to the number of paragraphs it contains. The layout also doesn't support tables or nested frames, or any sort of advanced text layout that goes beyond a list of paragraphs with syntax highlighting.

特性文檔編製

cursorWidth : int

此特性指定光標的寬度 (以像素為單位)。默認值為 1。

訪問函數：

int	cursorWidth () const
void	setCursorWidth (int width )

成員函數文檔編製

QPlainTextDocumentLayout:: QPlainTextDocumentLayout ( QTextDocument * document )

構造純文本文檔布局為文本 document .

[虛擬] QPlainTextDocumentLayout:: ~QPlainTextDocumentLayout ()

銷毀純文本文檔布局。

[override virtual] QRectF QPlainTextDocumentLayout:: blockBoundingRect (const QTextBlock & block ) const

重實現自 QAbstractTextDocumentLayout::blockBoundingRect ().

[override virtual protected] void QPlainTextDocumentLayout:: documentChanged ( int from , int charsRemoved , int charsAdded )

重實現自 QAbstractTextDocumentLayout::documentChanged ().

[override virtual] QSizeF QPlainTextDocumentLayout:: documentSize () const

重實現自 QAbstractTextDocumentLayout::documentSize ().

[override virtual] void QPlainTextDocumentLayout:: draw ( QPainter * , const QAbstractTextDocumentLayout::PaintContext & )

重實現自 QAbstractTextDocumentLayout::draw ().

void QPlainTextDocumentLayout:: ensureBlockLayout (const QTextBlock & block ) const

Ensures that block has a valid layout

[override virtual] QRectF QPlainTextDocumentLayout:: frameBoundingRect ( QTextFrame * ) const

重實現自 QAbstractTextDocumentLayout::frameBoundingRect ().

[override virtual] int QPlainTextDocumentLayout:: hitTest ( const QPointF & , Qt::HitTestAccuracy ) const

重實現自 QAbstractTextDocumentLayout::hitTest ().

[override virtual] int QPlainTextDocumentLayout:: pageCount () const

重實現自 QAbstractTextDocumentLayout::pageCount ().

void QPlainTextDocumentLayout:: requestUpdate ()

請求對所有視圖，進行完整更新。