QPdfSearchModel 类

QPdfSearchModel 类搜索 PDF 文档中的字符串并保持结果。更多...

头：	#include <QPdfSearchModel>
继承：	QAbstractListModel

所有成员列表，包括继承成员

公共类型

enum class

Role { Page, IndexOnPage, Location, ContextBefore, ContextAfter }

特性

document : QPdfDocument*
searchString : QString

公共函数

	QPdfSearchModel (QObject * parent )
virtual	~QPdfSearchModel () override
QPdfDocument *	document () const
QPdfLink	resultAtIndex (int index ) const
QList<QPdfLink>	resultsOnPage (int page ) const
QString	searchString () const

重实现公共函数

virtual QVariant	data (const QModelIndex & index , int role ) const override
virtual QHash<int, QByteArray>	roleNames () const override
virtual int	rowCount (const QModelIndex & parent ) const override

公共槽

void	setDocument (QPdfDocument * document )
void	setSearchString (const QString & searchString )

信号

void	documentChanged ()
void	searchStringChanged ()

详细描述

This is used in the 模型/视图编程 paradigm to display a list of search results, to highlight them on the rendered PDF pages, and to iterate through them using the "search forward" / "search backward" buttons and shortcuts that would be found in a typical document-viewing UI:

成员类型文档编制

enum class QPdfSearchModel:: Role

常量	值	描述
`QPdfSearchModel::Role::Page`	`Qt::UserRole`	The page number where the search result is found (int).
`QPdfSearchModel::Role::IndexOnPage`	`257`	The index of the search result on the page (int).
`QPdfSearchModel::Role::Location`	`258`	The position of the search result on the page ( QPointF ).
`QPdfSearchModel::Role::ContextBefore`	`259`	The adjacent text on the page, before the search string ( QString ).
`QPdfSearchModel::Role::ContextAfter`	`260`	The adjacent text on the page, after the search string ( QString ).

另请参阅 QPdfLink .

特性文档编制

document : QPdfDocument *

此特性保持要搜索文档

访问函数：

QPdfDocument *	document () const
void	setDocument (QPdfDocument * document )

通知程序信号：

void	documentChanged ()

searchString : QString

This property holds the string to search for

访问函数：

QString	searchString () const
void	setSearchString (const QString & searchString )

通知程序信号：

void	searchStringChanged ()

成员函数文档编制

`[explicit]` QPdfSearchModel:: QPdfSearchModel ( QObject * parent )

Constructs a new search model with parent object parent .

`[override virtual]` QPdfSearchModel:: ~QPdfSearchModel ()

Destroys the model.

`[override virtual]` QVariant QPdfSearchModel:: data (const QModelIndex & index , int role ) const

重实现： QAbstractItemModel::data(const QModelIndex &index, int role) const .

QPdfLink QPdfSearchModel:: resultAtIndex ( int index ) const

Returns a result found by index 在 document , regardless of the page on which it was found. index must be less than rowCount .

QList < QPdfLink > QPdfSearchModel:: resultsOnPage ( int page ) const

Returns the list of all results found on the given page .

`[override virtual]` QHash < int , QByteArray > QPdfSearchModel:: roleNames () const

重实现： QAbstractItemModel::roleNames() const .

`[override virtual]` int QPdfSearchModel:: rowCount (const QModelIndex & parent ) const

重实现： QAbstractItemModel::rowCount(const QModelIndex &parent) const .

The number of rows in the model is equal to the number of search results found.