QPdfDocument 類加載 PDF 文檔並渲染其頁麵。 更多...
| 頭： | #include <QPdfDocument> |
| Since: | Qt 5.10 |
| 繼承： | QObject |
該類在 Qt 5.10 引入。
| enum | MetaDataField { Title, Author, Subject, Keywords, Creator, …, ModificationDate } |
| enum | Status { Null, Loading, Ready, Unloading, Error } |
| QPdfDocument (QObject * parent = nullptr) | |
| virtual | ~QPdfDocument () |
| void | close () |
| QPdfSelection | getAllText (int page ) |
| QPdfSelection | getSelection (int page , QPointF start , QPointF end ) |
| QPdfSelection | getSelectionAtIndex (int page , int startIndex , int maxLength ) |
| QVariant | metaData (QPdfDocument::MetaDataField field ) const |
| int | pageCount () const |
| QString | password () const |
| QImage | render (int page , QSize imageSize , QPdfDocumentRenderOptions renderOptions = QPdfDocumentRenderOptions()) |
| void | setPassword (const QString & password ) |
| QPdfDocument::Status | status () const |
| void | pageCountChanged (int pageCount ) |
| void | passwordChanged () |
| void | statusChanged (QPdfDocument::Status status ) |
此枚舉描述元數據的可用字段。
| 常量 | 值 | 描述 |
|---|---|---|
QPdfDocument::Title
|
0
|
文檔的標題作為 QString . |
QPdfDocument::Author
|
2
|
The name of the person who created the document as QString . |
QPdfDocument::Subject
|
1
|
The subject of the document as QString . |
QPdfDocument::Keywords
|
3
|
Keywords associated with the document as QString . |
QPdfDocument::Creator
|
5
|
If the document was converted to PDF from another format, the name of the conforming product that created the original document from which it was converted as QString . |
QPdfDocument::Producer
|
4
|
If the document was converted to PDF from another format, the name of the conforming product that converted it to PDF as QString . |
QPdfDocument::CreationDate
|
6
|
The date and time the document was created as QDateTime . |
QPdfDocument::ModificationDate
|
7
|
The date and time the document was most recently modified as QDateTime . |
另請參閱 QPdfDocument::metaData ().
此枚舉描述文檔的當前狀態。
| 常量 | 值 | 描述 |
|---|---|---|
QPdfDocument::Null
|
0
|
The initial status after the document has been created or after it has been closed. |
QPdfDocument::Loading
|
1
|
The status after load() has been called and before the document is fully loaded. |
QPdfDocument::Ready
|
2
|
The status when the document is fully loaded and its data can be accessed. |
QPdfDocument::Unloading
|
3
|
The status after close () has been called on an open document. At this point the document is still valid and all its data can be accessed. |
QPdfDocument::Error
|
4
|
加載後的狀態，若加載失敗。 |
另請參閱 QPdfDocument::status ().
構造新文檔采用父級對象 parent .
[虛擬]
QPdfDocument::
~QPdfDocument
()
銷毀文檔。
關閉文檔。
返迴所有文本及其邊界在給定 page .
注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .
Returns information about the text on the given page that can be found between the given start and end points, if any.
注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .
Returns information about the text on the given page that can be found beginning at the given startIndex with at most maxLength characters.
注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .
Returns the meta data of the document for the given field .
Returns the amount of pages for the loaded document or
0
if no document is loaded.
注意： getter 函數對於特性 pageCount。
渲染 page 成 QImage 的大小 imageSize according to the provided renderOptions .
Returns the rendered page or an empty image in case of an error.
注意：若 imageSize does not match the aspect ratio of the page in the PDF document, the page is rendered scaled, so that it covers the complete imageSize .
Returns the current status of the document.
注意： getter 函數對於特性 status。