# QWebFrame Class Reference
## [[QtWebKit](index.htm) module]
該QWebFrame類表示一個web頁面的框架。[More...](#details)
繼承[QObject](qobject.html)。
### Types
* `enum RenderLayer { ContentsLayer, ScrollBarLayer, PanIconLayer, AllLayers }`
### Methods
* `addToJavaScriptWindowObject (self, QString?name, QObject?object)`
* `QUrl baseUrl (self)`
* `list-of-QWebFrame childFrames (self)`
* `QSize contentsSize (self)`
* `QWebElement documentElement (self)`
* `QVariant evaluateJavaScript (self, QString?scriptSource)`
* `bool event (self, QEvent)`
* `QWebElementCollection findAllElements (self, QString?selectorQuery)`
* `QWebElement findFirstElement (self, QString?selectorQuery)`
* `QString frameName (self)`
* `QRect geometry (self)`
* `bool hasFocus (self)`
* `QWebHitTestResult hitTestContent (self, QPoint?pos)`
* `QIcon icon (self)`
* `load (self, QUrl?url)`
* `load (self, QNetworkRequest?request, QNetworkAccessManager.Operation?operation?=?QNetworkAccessManager.GetOperation, QByteArray?body?=?QByteArray())`
* `dict-of-QString-list-of-QString metaData (self)`
* `QWebPage page (self)`
* `QWebFrame parentFrame (self)`
* `QPoint pos (self)`
* `print (self, QPrinter?printer)`
* `print_ (self, QPrinter?printer)`
* `render (self, QPainter?painter, QRegion?clip)`
* `render (self, QPainter?painter)`
* `render (self, QPainter, RenderLayer?layer, QRegion?clip?=?QRegion())`
* `QString renderTreeDump (self)`
* `QUrl requestedUrl (self)`
* `scroll (self, int, int)`
* `QRect scrollBarGeometry (self, Qt.Orientation?orientation)`
* `int scrollBarMaximum (self, Qt.Orientation?orientation)`
* `int scrollBarMinimum (self, Qt.Orientation?orientation)`
* `Qt.ScrollBarPolicy scrollBarPolicy (self, Qt.Orientation?orientation)`
* `int scrollBarValue (self, Qt.Orientation?orientation)`
* `QPoint scrollPosition (self)`
* `scrollToAnchor (self, QString?anchor)`
* `QWebSecurityOrigin securityOrigin (self)`
* `setContent (self, QByteArray?data, QString?mimeType?=?QString(), QUrl?baseUrl?=?QUrl())`
* `setFocus (self)`
* `setHtml (self, QString?html, QUrl?baseUrl?=?QUrl())`
* `setScrollBarPolicy (self, Qt.Orientation?orientation, Qt.ScrollBarPolicy?policy)`
* `setScrollBarValue (self, Qt.Orientation?orientation, int?value)`
* `setScrollPosition (self, QPoint?pos)`
* `setTextSizeMultiplier (self, float?factor)`
* `setUrl (self, QUrl?url)`
* `setZoomFactor (self, float?factor)`
* `float textSizeMultiplier (self)`
* `QString title (self)`
* `QString toHtml (self)`
* `QString toPlainText (self)`
* `QUrl url (self)`
* `float zoomFactor (self)`
### Qt Signals
* `void contentsSizeChanged (const QSize&)`
* `void iconChanged ()`
* `void initialLayoutCompleted ()`
* `void javaScriptWindowObjectCleared ()`
* `void loadFinished (bool)`
* `void loadStarted ()`
* `void pageChanged ()`
* `void titleChanged (const QString&)`
* `void urlChanged (const QUrl&)`
* * *
## Detailed Description
該QWebFrame類表示一個web頁面的框架。
QWebFrame表示內部網頁中的幀。每[QWebPage](qwebpage.html)對象中包含的至少一個幀,在主框架,得到用[QWebPage.mainFrame](qwebpage.html#mainFrame)( ) 。額外的幀將用于HTML創建`<frame>` or `<iframe>`元素。
一個框架可以使用被加載[load](qwebframe.html#load)()或[setUrl](qwebframe.html#url-prop)( ) 。另外,如果你有HTML內容一應俱全,您可以使用[setHtml](qwebframe.html#setHtml)( )來代替。
該[page](qwebframe.html#page)( )函數返回一個指向該網頁的對象。看[Elements of QWebView](qwebview.html)對于如何肋骨都涉及到一個網頁和Web視圖的解釋。
該QWebFrame類還提供了方法來檢索現時由框架加載的URL(請參閱[url](qwebframe.html#url-prop)())以及最初請求要加載的URL(見[requestedUrl](qwebframe.html#requestedUrl-prop)())。這些方法使得有可能在URL之前和之后的DNS解析或重定向檢索在加載過程中發生。該[requestedUrl](qwebframe.html#requestedUrl-prop)()也匹配到添加到幀歷史的URL([QWebHistory](qwebhistory.html)) ,如果加載成功。
一個HTML幀的標題可以通過訪問[title](qwebframe.html#title-prop)()屬性。此外,一個幀也可以利用指定一個圖標,它可被訪問的[icon](qwebframe.html#icon-prop)()屬性。如果標題或圖標的變化,相應的[titleChanged](qwebframe.html#titleChanged)()和[iconChanged](qwebframe.html#iconChanged)()信號將被發射。該[zoomFactor](qwebframe.html#zoomFactor-prop)()屬性可以被用來改變在幀中顯示的內容的總體尺寸。
由網頁創建和控制QWebFrame對象。您可以連接到該網頁的[frameCreated()](qwebpage.html#frameCreated)信號創建一個新的框架時得到通知。
有多種方法以編程方式檢查一個幀的內容。該[hitTestContent](qwebframe.html#hitTestContent)()函數可以被用來找到由坐標元素。用于訪問底層DOM樹,有[documentElement](qwebframe.html#documentElement)( )[findAllElements](qwebframe.html#findAllElements)()和[findFirstElement](qwebframe.html#findFirstElement)( ) 。
一個QWebFrame可以打印到[QPrinter](qprinter.html)使用[print_](qwebframe.html#print)()函數。這個功能被標記為一個時隙,并且可以方便地連接到[QPrintPreviewDialog](qprintpreviewdialog.html)的[paintRequested()](qprintpreviewdialog.html#paintRequested)信號。
* * *
## Type Documentation
```
QWebFrame.RenderLayer
```
這個枚舉說明適用于使用渲染層[render()](qwebframe.html#render)。該層可以是或的結果一起從下面的列表:
| Constant | Value | Description |
| --- | --- | --- |
| `QWebFrame.ContentsLayer` | `0x10` | 框架的網頁內容 |
| `QWebFrame.ScrollBarLayer` | `0x20` | 框架的滾動條 |
| `QWebFrame.PanIconLayer` | `0x40` | 平移框架時使用的圖標 |
| `QWebFrame.AllLayers` | `0xff` | 包括上述所有層 |
* * *
## Method Documentation
```
QWebFrame.addToJavaScriptWindowObject (self, QString?name, QObject?object)
```
使_object_可下_name_從框架的JavaScript的范圍內。該_object_將插入作為框架的window對象的子對象。
Qt的屬性將被暴露成JavaScript的性能和插槽的JavaScript方法。 C + +和JavaScript之間的交互的文檔中解釋[QtWebKit bridge](index.htm)。
如果你想確保你的[QObjects](index.htm#qobjects)仍可以訪問加載一個新的URL之后,您應該將它們添加在連接到一個槽[javaScriptWindowObjectCleared](qwebframe.html#javaScriptWindowObjectCleared)()信號。
如果未啟用此頁面的Javascript ,則此方法不執行任何操作。
該_object_永遠不會被顯式刪除[QtWebKit](index.htm)。
```
QUrl QWebFrame.baseUrl (self)
```
[
```
list-of-QWebFrame QWebFrame.childFrames (self)
```
返回是這個框架的直接子所有幀的列表。
](qurl.html)
[**See also**](qurl.html) [parentFrame](qwebframe.html#parentFrame)( ) 。
```
QSize QWebFrame.contentsSize (self)
```
[](qsize.html)
```
QWebElement QWebFrame.documentElement (self)
```
[
返回該框架的文檔元素。
文檔元素可以訪問該幀的整個結構化內容。
此功能被引入Qt的4.6 。
```
QVariant QWebFrame.evaluateJavaScript (self, QString?scriptSource)
```
這種方法也是一個Qt槽與C + +的簽名`QVariant evaluateJavaScript(const QString&)`。
評估的JavaScript定義為_scriptSource_使用這個框架作為背景,并返回最后執行的語句的結果。
](qwebelement.html)
[**See also**](qwebelement.html) [addToJavaScriptWindowObject](qwebframe.html#addToJavaScriptWindowObject)()和[javaScriptWindowObjectCleared](qwebframe.html#javaScriptWindowObjectCleared)( ) 。
```
bool QWebFrame.event (self, QEvent)
```
從重新實現[QObject.event](qobject.html#event)( ) 。
```
QWebElementCollection QWebFrame.findAllElements (self, QString?selectorQuery)
```
[
返回元素匹配給定的CSS選擇一個新的列表_selectorQuery_。如果沒有匹配的元素,則返回一個空列表。
](qwebelementcollection.html)
[](qwebelementcollection.html)[Standard CSS2 selector](http://www.w3.org/TR/REC-CSS2/selector.html#q1)語法用于查詢。
此功能被引入Qt的4.6 。
**See also** [QWebElement.findAll](qwebelement.html#findAll)( ) 。
```
QWebElement QWebFrame.findFirstElement (self, QString?selectorQuery)
```
[
返回匹配給定的CSS選擇器框架的文檔中的第一個元素_selectorQuery_。如果沒有匹配的元素,則返回一個空元素。
](qwebelement.html)
[](qwebelement.html)[Standard CSS2 selector](http://www.w3.org/TR/REC-CSS2/selector.html#q1)語法用于查詢。
此功能被引入Qt的4.6 。
**See also** [QWebElement.findFirst](qwebelement.html#findFirst)( ) 。
```
QString QWebFrame.frameName (self)
```
這個幀的父幀所定義的名稱。
```
QRect QWebFrame.geometry (self)
```
[
返回幀相對的幾何形狀給它的父框架。
```
bool QWebFrame.hasFocus (self)
```
](qrect.html)
```
QWebHitTestResult QWebFrame.hitTestContent (self, QPoint?pos)
```
[
執行在給定位置上的幀內容的命中測試_pos_并返回命中測試結果。
](qwebhittestresult.html)
```
QIcon QWebFrame.icon (self)
```
[
```
QWebFrame.load (self, QUrl?url)
```
負載_url_這個框架。
**Note:**該視圖保持不變,直到足夠的數據已經到達,以顯示新_url_。
](qicon.html)
[**See also**](qicon.html) [setUrl](qwebframe.html#url-prop)( )[setHtml](qwebframe.html#setHtml)()和[setContent](qwebframe.html#setContent)( ) 。
```
QWebFrame.load (self, QNetworkRequest?request, QNetworkAccessManager.Operation?operation?=?QNetworkAccessManager.GetOperation, QByteArray?body?=?QByteArray())
```
加載一個網絡請求,_req_,到這個幀時,使用指定的方法_operation_。
_body_是可選的,并且僅用于POST操作。
**Note:**該視圖保持不變,直到足夠的數據已經到達,以顯示新的內容。
**See also** [setUrl](qwebframe.html#url-prop)( ) 。
```
dict-of-QString-list-of-QString QWebFrame.metaData (self)
```
返回此框架的元數據作為[QMultiMap](index.htm)
所述元數據包含的的名稱和內容屬性的`<meta>`標籤在HTML文檔中。
例如:
```
<html>
<head>
<meta name="description" content="This document is a tutorial about Qt development">
<meta name="keywords" content="Qt, WebKit, Programming">
</head>
...
</html>
```
鑑于上面的HTML代碼中的元數據( )函數將返回兩個條目的地圖:
| Key | Value |
| --- | --- |
| "description" | "This document is a tutorial about Qt development" |
| "keywords" | "Qt, WebKit, Programming" |
這個函數返回一個多地圖,支持多種meta標籤具有相同屬性的名稱。
此功能被引入Qt的4.5 。
```
QWebPage QWebFrame.page (self)
```
[
該網頁包含這個框架。
](qwebpage.html)
[**See also**](qwebpage.html) [pageChanged](qwebframe.html#pageChanged)( ) 。
```
QWebFrame QWebFrame.parentFrame (self)
```
[
返回該框架的父框架,或者0,如果該幀是網頁主要框架。
](qwebframe.html)
[這相當于qobject_cast \u003c](qwebframe.html)[QWebFrame](qwebframe.html)* \u003e (幀\u003e[parent](qobject.html#parent)())。
**See also** [childFrames](qwebframe.html#childFrames)( ) 。
```
QPoint QWebFrame.pos (self)
```
[
返回幀相對的位置,它的父框架。
```
QWebFrame.print (self, QPrinter?printer)
```
這種方法也是一個Qt槽與C + +的簽名`void print(QPrinter *) const`。
打印該幀為給定的_printer_。
](qpoint.html)
[**See also**](qpoint.html) [render](qwebframe.html#render)( ) 。
```
QWebFrame.print_ (self, QPrinter?printer)
```
這種方法也是一個Qt槽與C + +的簽名`void print(QPrinter *) const`。
打印該幀為給定的_printer_。
**See also** [render](qwebframe.html#render)( ) 。
```
QWebFrame.render (self, QPainter?painter, QRegion?clip)
```
幀渲染成_painter_。
```
QWebFrame.render (self, QPainter?painter)
```
幀渲染成_painter_削波_clip_。
```
QWebFrame.render (self, QPainter, RenderLayer?layer, QRegion?clip?=?QRegion())
```
渲染_layer_使用幀的_painter_削波_clip_。
此功能被引入Qt的4.6 。
**See also** [print_](qwebframe.html#print)( ) 。
```
QString QWebFrame.renderTreeDump (self)
```
返回渲染樹的轉儲。這主要是用于調試HTML有用。
```
QUrl QWebFrame.requestedUrl (self)
```
[
```
QWebFrame.scroll (self, int, int)
```
滾動框_dx_像素向右和_dy_向下像素。兩_dx_和_dy_可能是負的。
此功能被引入Qt的4.5 。
](qurl.html)
[**See also**](qurl.html) [QWebFrame.scrollPosition](qwebframe.html#scrollPosition-prop)。
```
QRect QWebFrame.scrollBarGeometry (self, Qt.Orientation?orientation)
```
[
返回與方向滾動條的幾何形狀_orientation_。
如果滾動條不存在的空矩形被返回。
此功能被引入Qt的4.6 。
```
int QWebFrame.scrollBarMaximum (self, Qt.Orientation?orientation)
```
返回最大值與方向的滾動條_orientation_,或者0,如果沒有滾動條找到的_orientation_。
](qrect.html)
[**See also**](qrect.html) [scrollBarMinimum](qwebframe.html#scrollBarMinimum)( ) 。
```
int QWebFrame.scrollBarMinimum (self, Qt.Orientation?orientation)
```
返回最小值與方向的滾動條_orientation_。
最低值始終為0。
**See also** [scrollBarMaximum](qwebframe.html#scrollBarMaximum)( ) 。
```
Qt.ScrollBarPolicy QWebFrame.scrollBarPolicy (self, Qt.Orientation?orientation)
```
[
返回由定義的滾動條的滾動條政策_orientation_。
](qt.html#ScrollBarPolicy-enum)
[**See also**](qt.html#ScrollBarPolicy-enum) [setScrollBarPolicy](qwebframe.html#setScrollBarPolicy)( ) 。
```
int QWebFrame.scrollBarValue (self, Qt.Orientation?orientation)
```
返回當前值與方向的滾動條_orientation_,或者0,如果沒有滾動條找到的_orientation_。
**See also** [setScrollBarValue](qwebframe.html#setScrollBarValue)( )[scrollBarMinimum](qwebframe.html#scrollBarMinimum)()和[scrollBarMaximum](qwebframe.html#scrollBarMaximum)( ) 。
```
QPoint QWebFrame.scrollPosition (self)
```
[
```
QWebFrame.scrollToAnchor (self, QString?anchor)
```
幀滾動到給定_anchor_名稱。
此功能被引入Qt的4.7 。
](qpoint.html)
```
QWebSecurityOrigin QWebFrame.securityOrigin (self)
```
[
返回框架的安全性起源。
此功能被引入Qt的4.5 。
```
QWebFrame.setContent (self, QByteArray?data, QString?mimeType?=?QString(), QUrl?baseUrl?=?QUrl())
```
設置該幀的內容來指定的內容_data_。如果_mimeType_參數為空它是目前假設內容是HTML,但在未來的版本中,我們可能會引入自動檢測。
在內容引用的外部對象的位置相對_baseUrl_。
該_data_立即加載;外部對象異步加載。
**Note:**這種方法不會影響會話或世界歷史的框架。
](qwebsecurityorigin.html)
[**See also**](qwebsecurityorigin.html) [toHtml](qwebframe.html#toHtml)()和[setHtml](qwebframe.html#setHtml)( ) 。
```
QWebFrame.setFocus (self)
```
使鍵盤輸入焦點到這個框架。
此功能被引入Qt的4.6 。
**See also** [hasFocus](qwebframe.html#focus-prop)( ) 。
```
QWebFrame.setHtml (self, QString?html, QUrl?baseUrl?=?QUrl())
```
設置此幀的內容來_html_。_baseUrl_是可選的,用來解析文檔中的相對URL ,如引用的圖片或樣式表。
該_html_立即加載;外部對象異步加載。
如果在一個腳本_html_由于被封鎖的模態JavaScript警告對話框的運行時間比默認的腳本超時(目前為10秒) ,例如,此方法將超時和任何后續后盡快返回_html_將異步加載。
當使用這種方法的WebKit假定外部資源,例如JavaScript程序或樣式表,除非另有規定被編碼為UTF -8 。例如,外部腳本的編碼可以通過HTML腳本標記的charset屬性來指定。另外,也可以對由Web服務器被指定的編碼。
這相當于一個方便的功能,使用setContent ( HTML , “為text / html ” ,[baseUrl](qwebframe.html#baseUrl-prop)) 。
**Note:**這種方法不會影響會話或世界歷史的框架。
**Warning:**此功能僅用于HTML ,為其他MIME類型(即XHTML , SVG )[setContent](qwebframe.html#setContent)( )應該使用。
**See also** [toHtml](qwebframe.html#toHtml)( )[setContent](qwebframe.html#setContent)()和[load](qwebframe.html#load)( ) 。
```
QWebFrame.setScrollBarPolicy (self, Qt.Orientation?orientation, Qt.ScrollBarPolicy?policy)
```
設置為定義的滾動條的滾動條政策_orientation_至_policy_。
**See also** [scrollBarPolicy](qwebframe.html#scrollBarPolicy)( ) 。
```
QWebFrame.setScrollBarValue (self, Qt.Orientation?orientation, int?value)
```
設置當前_value_與方向滾動條_orientation_。
滾動條強制_value_要在法律的范圍內:最小值\u003c =值\u003c =最大值。
更改該值也會更新拇指的位置。
**See also** [scrollBarValue](qwebframe.html#scrollBarValue)( )[scrollBarMinimum](qwebframe.html#scrollBarMinimum)()和[scrollBarMaximum](qwebframe.html#scrollBarMaximum)( ) 。
```
QWebFrame.setScrollPosition (self, QPoint?pos)
```
```
QWebFrame.setTextSizeMultiplier (self, float?factor)
```
設置用于擴展在Web框架的文本乘數的值_factor_規定。
**See also** [textSizeMultiplier](qwebframe.html#textSizeMultiplier)( ) 。
```
QWebFrame.setUrl (self, QUrl?url)
```
```
QWebFrame.setZoomFactor (self, float?factor)
```
```
float QWebFrame.textSizeMultiplier (self)
```
返回用于擴展在Web框架中的文字乘數的值。
**See also** [setTextSizeMultiplier](qwebframe.html#setTextSizeMultiplier)( ) 。
```
QString QWebFrame.title (self)
```
```
QString QWebFrame.toHtml (self)
```
返回框架的內容為HTML ,包含在HTML和BODY標記。
**See also** [setHtml](qwebframe.html#setHtml)()和[toPlainText](qwebframe.html#toPlainText)( ) 。
```
QString QWebFrame.toPlainText (self)
```
返回該框架的內容轉換為純文本,完全剝奪了所有的HTML格式的。
**See also** [toHtml](qwebframe.html#toHtml)( ) 。
```
QUrl QWebFrame.url (self)
```
[
```
float QWebFrame.zoomFactor (self)
```
* * *
## Qt Signal Documentation
```
void contentsSizeChanged (const QSize&)
```
這是該信號的默認超載。
這個信號被發射時,幀的內容大小變化_size_。
此功能被引入Qt的4.6 。
](qurl.html)
[**See also**](qurl.html) [contentsSize](qwebframe.html#contentsSize-prop)( ) 。
```
void iconChanged ()
```
這是該信號的默認超載。
這個信號時的圖標( “的favicon ” )與該幀相關聯的已加載射出。
**See also** [icon](qwebframe.html#icon-prop)( ) 。
```
void initialLayoutCompleted ()
```
這是該信號的默認超載。
當幀被在第一時間布局這個信號被發射。這是第一次,你會看到畫面上顯示的內容。
**Note:**一個框架可以進行布局多次。
```
void javaScriptWindowObjectCleared ()
```
這是該信號的默認超載。
這個信號被發射時的JavaScript環境的全局的window對象被清除,例如,開始一個新的前負荷。
如果您打算添加[QObjects](index.htm#qobjects)到[QWebFrame](qwebframe.html) using [addToJavaScriptWindowObject](qwebframe.html#addToJavaScriptWindowObject)( ),你應該將它們添加在連接到該信號的槽。這將確保你的對象加載新的URL時,仍然可以訪問。
```
void loadFinished (bool)
```
這是該信號的默認超載。
當該幀的負載被完成這個信號被發射。_ok_將指示負載是否成功,或發生任何錯誤。
此功能被引入Qt的4.6 。
**See also** [loadStarted](qwebframe.html#loadStarted)( ) 。
```
void loadStarted ()
```
這是該信號的默認超載。
當開始該幀的一個新的負載,這個信號被發射。
此功能被引入Qt的4.6 。
**See also** [loadFinished](qwebframe.html#loadFinished)( ) 。
```
void pageChanged ()
```
這是該信號的默認超載。
當此幀已被移動到一個不同的這個信號被發射[QWebPage](qwebpage.html)。
此功能被引入Qt的4.7 。
**See also** [page](qwebframe.html#page)( ) 。
```
void titleChanged (const QString&)
```
這是該信號的默認超載。
這個信號被發射時的幀變化的稱號。該_title_字符串指定新的標題。
**See also** [title](qwebframe.html#title-prop)( ) 。
```
void urlChanged (const QUrl&)
```
這是該信號的默認超載。
這個信號被發射與接收到幀的標題時,幀的URL 。新的URL被指定_url_。
**See also** [url](qwebframe.html#url-prop)( ) 。
- PyQt4 中文文檔
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- Reference
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