QPlainTextDocumentLayout 類

QPlainTextDocumentLayout 類實現純文本布局，為 QTextDocument . 更多...

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

該類在 Qt 4.4 引入。

所有成員列錶，包括繼承成員

特性

cursorWidth : int

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

重實現保護函數

virtual void

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

詳細描述

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

QPlainTextDocumentLayout uses the 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： QAbstractTextDocumentLayout::blockBoundingRect (const QTextBlock &block) const.

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

重實現： QAbstractTextDocumentLayout::documentChanged (int position, int charsRemoved, int charsAdded).

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

重實現： QAbstractTextDocumentLayout::documentSize () const.

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

重實現： QAbstractTextDocumentLayout::draw (QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context).

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

Ensures that block has a valid layout

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

重實現： QAbstractTextDocumentLayout::frameBoundingRect (QTextFrame *frame) const.

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

重實現： QAbstractTextDocumentLayout::hitTest (const QPointF &point, Qt::HitTestAccuracy accuracy) 常量。

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

重實現： QAbstractTextDocumentLayout::pageCount () const.

void QPlainTextDocumentLayout:: requestUpdate ()

請求對所有視圖，進行完整更新。