A WebEngineView renders web content within a QML application. 更多...
| import 语句： | import QtWebEngine 1.5 |
| Since: | QtWebEngine 1.0 |
| 继承： | Item |
The WebEngineView type enables QML applications to render regions of dynamic web content. It may share the screen with other QML types, such as a TabView , or fill the screen, as specified within the QML application.
For the web engine view to be rendered, the web engine must be initialized by using QtWebEngine::initialize 在应用程序主源文件中，如以下代码段所示：
int main(int argc, char *argv[]) { QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling); QGuiApplication app(argc, argv); QtWebEngine::initialize(); QQmlApplicationEngine engine; engine.load(QUrl(QStringLiteral("qrc:/main.qml"))); return app.exec(); }
应用程序可以把页面加载到 WebEngineView , using either the url property or the loadHtml method and navigate within the view's session history. The GET method is always used to load URLs.
The history is represented by a WebEngineHistory data model that is held by the navigationHistory 特性。
以下样本 QML 应用程序加载网页使用
url
特性：
import QtQuick 2.0 import QtQuick.Window 2.0 import QtWebEngine 1.0 Window { width: 1024 height: 750 visible: true WebEngineView { anchors.fill: parent url: "http://www.qt.io" } }
The loading 特性保持目前是否加载 HTML 页面。 loadingChanged() signal is emitted when loading the page begins, ends, or fails.
HTML 页面标题可以被访问采用 title property. Additionally, a web page may specify an icon, which can be accessed using the icon property. The zoomFactor property enables zooming the contents of the web page by a scale factor.
If a certificate error is raised while loading a web page, the certificateError() signal is emitted. Certificate errors are handled by using the methods of the WebEngineCertificateError 类型。
By default, links to different pages load within the same WebEngineView object, but web sites may request them to be opened as a new tab, window, or dialog. The newViewRequested() signal is emitted when a request to load the page in a separate web engine view is issued. The NewViewDestination property describes how the new view should be opened. In addition, the WebEngineNewViewRequest utility type can be used to load web pages in separate web engine views.
The findText() method can be used to search for a string on a web page, using the options described by FindFlags .
The setActiveFocusOnPress() method can be used to create a UI element that should not get focus on press. This can be useful in a hybrid UI.
The focusOnNavigationEnabled setting can be used to stop the view from automatically receiving focus when a navigation operation occurs (like loading or reloading a page or navigating through history).
The
linkHovered()
signal is emitted when a mouse pointer passes over a link and thus corresponds to the
mouseover
DOM event.
Actions, such as selecting and editing content, can be performed on a web page by using the triggerWebAction() method. The available actions are described by the WebAction 特性。
The backgroundColorChanged() signal is emitted when the web page background color changes.
During the loading of a page, so called 用户脚本 can be injected in the JavaScript engine at different points. The script objects attached to the web engine view are held by the userScripts property and injected by using the WebEngineScript type. Scripts can also be run by using the runJavaScript() method in the same world as other scripts that are part of the loaded site.
The
webChannel
property can be used to expose a WebChannel instance in the JavaScript context of the page it is rendering as
qt.webChannelTransport
.
A web page can request through the JavaScript API to be loaded in fullscreen mode. The fullScreenRequested() signal is emitted when the web page issues the request. The WebEngineFullScreenRequest utility type can be used to toggle fullscreen requests. The fullScreenCancelled method can be used to notify the browser engine when the windowing system forces the application to leave fullscreen mode.
Web engine views can be isolated from each other by using the WebEngineProfile type. A profile contains settings, scripts, and the list of visited links shared by all views that belong to the profile. For example, a dedicated profile could be created for a 隐私浏览 mode. The current profile for the view is held by the profile property and the current settings are held by the settings property. The settings are specified by using the WebEngineSettings 类型。
Web pages can request access to platform features, such as geolocation or audio and video capture devices. The featurePermissionRequested() signal is emitted when a web page requests to make use of a resource. The supported platform features are described by the Feature property. If users grant the permission, the grantFeaturePermission() method is used to set it to granted .
当使用
QQuickRenderControl
to render a Qt Quick user interface to an OpenGL surface, the
WebEngineView
type is not rendered correctly. The web engine view attempts to use a global OpenGL context created by
QtWebEngine::initialize
, but there is no public API for accessing that context in order to share it with the
QQuickRenderControl
上下文。
To have the web engine view rendered correctly, it is possible to manually create a new offscreen context that is shared with the
QQuickRenderControl
and to call the non-public function
qt_gl_set_global_share_context()
, rather than calling
initialize()
。若
initialize()
is called after setting a global context, it will do nothing.
Describes various high-level error types:
| 常量 | 描述 |
|---|---|
WebEngineView.NoErrorDomain
|
|
WebEngineView.InternalErrorDomain
|
Content fails to be interpreted by Qt WebEngine. |
WebEngineView.ConnectionErrorDomain
|
Error results from faulty network connection. |
WebEngineView.CertificateErrorDomain
|
Error related to the SSL/TLS certificate. |
WebEngineView.HttpErrorDomain
|
Error related to the HTTP connection. |
WebEngineView.FtpErrorDomain
|
Error related to the FTP connection. |
WebEngineView.DnsErrorDomain
|
Error related to the DNS connection. |
Describes the platform feature access categories that the user may be asked to grant or deny access to:
| 常量 | 描述 |
|---|---|
WebEngineView.Geolocation
|
定位硬件或服务。 |
WebEngineView.MediaAudioCapture
|
音频捕获设备 (譬如：麦克风)。 |
WebEngineView.MediaVideoCapture
|
视频设备 (譬如：摄像头)。 |
WebEngineView.MediaAudioVideoCapture
|
音频和视频捕获设备。 |
另请参阅 featurePermissionRequested() and grantFeaturePermission() .
描述的选项可用于 findText() 函数。来自以下列表中的选项可以 OR 在一起：
| 常量 | 描述 |
|---|---|
WebEngineView.FindBackward
|
向后搜索，而不是向前。 |
WebEngineView.FindFlags
|
FindCaseSensitively By default findText() works case insensitive. Specifying this option changes the behavior to a case sensitive find operation. |
另请参阅 findText() .
指示 JavaScript 控制台消息的严重性：
| 常量 | 描述 |
|---|---|
WebEngineView.InfoMessageLevel
|
Message is purely informative and can safely be ignored. |
WebEngineView.WarningMessageLevel
|
Message indicates there might be a problem that may need attention. |
WebEngineView.ErrorMessageLevel
|
Message indicates there has been an error. |
反射页面加载状态：
| 常量 | 描述 |
|---|---|
WebEngineView.LoadStartedStatus
|
目前正在加载页面。 |
WebEngineView.LoadStoppedStatus
|
Loading the page was stopped by the stop() method or by the loader code or network stack in Chromium. |
WebEngineView.LoadSucceededStatus
|
Page has successfully loaded, and is not currently loading. |
WebEngineView.LoadFailedStatus
|
Page has failed to load, and is not currently loading. |
Describes how to open a new view:
| 常量 | 描述 |
|---|---|
WebEngineView.NewViewInWindow
|
In a separate Window. |
WebEngineView.NewViewInTab
|
In a tab of the same window. |
WebEngineView.NewViewInDialog
|
In a Window without a tab bar, toolbar, or URL bar. |
WebEngineView.NewViewInBackgroundTab
|
In a tab of the same window, without hiding the currently visible web engine view. |
另请参阅 WebEngineNewViewRequest.destination .
Describes the orientation of a PDF document that gets created from the WebEngineView 's contents. The enumeration values are mapped from and must match QPageLayout::Orientation .
| 常量 | 描述 |
|---|---|
WebEngineView.Portrait
|
The document will be created using portrait orientation. |
WebEngineView.Landscape
|
The document will be created using landscape orientation. |
该 QML 特性在 QtWebEngine 1.3 引入。
另请参阅 WebEngineView::printToPdf() .
This enum type lists the available page sizes as defined in the Postscript PPD standard.
The enumeration values are mapped from and must match QPageSize::PageSizeId . They are also duplicated in QPagedPaintDevice and QPrinter .
定义尺寸：
| 常量 | 描述 |
|---|---|
WebEngineView.A0
|
841 x 1189 mm |
WebEngineView.A1
|
594 x 841 mm |
WebEngineView.A2
|
420 x 594 mm |
WebEngineView.A3
|
297 x 420 mm |
WebEngineView.A4
|
210 x 297 mm, 8.26 x 11.69 inches |
WebEngineView.A5
|
148 x 210 mm |
WebEngineView.A6
|
105 x 148 mm |
WebEngineView.A7
|
74 x 105 mm |
WebEngineView.A8
|
52 x 74 mm |
WebEngineView.A9
|
37 x 52 mm |
WebEngineView.B0
|
1000 x 1414 mm |
WebEngineView.B1
|
707 x 1000 mm |
WebEngineView.B2
|
500 x 707 mm |
WebEngineView.B3
|
353 x 500 mm |
WebEngineView.B4
|
250 x 353 mm |
WebEngineView.B5
|
176 x 250 mm, 6.93 x 9.84 inches |
WebEngineView.B6
|
125 x 176 mm |
WebEngineView.B7
|
88 x 125 mm |
WebEngineView.B8
|
62 x 88 mm |
WebEngineView.B9
|
44 x 62 mm |
WebEngineView.B10
|
31 x 44 mm |
WebEngineView.C5E
|
163 x 229 mm |
WebEngineView.Comm10E
|
105 x 241 mm, U.S. Common 10 Envelope |
WebEngineView.DLE
|
110 x 220 mm |
WebEngineView.Executive
|
7.5 x 10 inches, 190.5 x 254 mm |
WebEngineView.Folio
|
210 x 330 mm |
WebEngineView.Ledger
|
431.8 x 279.4 mm |
WebEngineView.Legal
|
8.5 x 14 inches, 215.9 x 355.6 mm |
WebEngineView.Letter
|
8.5 x 11 inches, 215.9 x 279.4 mm |
WebEngineView.Tabloid
|
279.4 x 431.8 mm |
WebEngineView.Custom
|
Unknown, or a user defined size. |
WebEngineView.A10
|
|
WebEngineView.A3Extra
|
|
WebEngineView.A4Extra
|
|
WebEngineView.A4Plus
|
|
WebEngineView.A4Small
|
|
WebEngineView.A5Extra
|
|
WebEngineView.B5Extra
|
|
WebEngineView.JisB0
|
|
WebEngineView.JisB1
|
|
WebEngineView.JisB2
|
|
WebEngineView.JisB3
|
|
WebEngineView.JisB4
|
|
WebEngineView.JisB5
|
|
WebEngineView.JisB6
|
|
WebEngineView.JisB7
|
|
WebEngineView.JisB8
|
|
WebEngineView.JisB9
|
|
WebEngineView.JisB10
|
|
WebEngineView.AnsiA
|
=
Letter
|
WebEngineView.AnsiB
|
=
Ledger
|
WebEngineView.AnsiC
|
|
WebEngineView.AnsiD
|
|
WebEngineView.AnsiE
|
|
WebEngineView.LegalExtra
|
|
WebEngineView.LetterExtra
|
|
WebEngineView.LetterPlus
|
|
WebEngineView.LetterSmall
|
|
WebEngineView.TabloidExtra
|
|
WebEngineView.ArchA
|
|
WebEngineView.ArchB
|
|
WebEngineView.ArchC
|
|
WebEngineView.ArchD
|
|
WebEngineView.ArchE
|
|
WebEngineView.Imperial7x9
|
|
WebEngineView.Imperial8x10
|
|
WebEngineView.Imperial9x11
|
|
WebEngineView.Imperial9x12
|
|
WebEngineView.Imperial10x11
|
|
WebEngineView.Imperial10x13
|
|
WebEngineView.Imperial10x14
|
|
WebEngineView.Imperial12x11
|
|
WebEngineView.Imperial15x11
|
|
WebEngineView.ExecutiveStandard
|
|
WebEngineView.Note
|
|
WebEngineView.Quarto
|
|
WebEngineView.Statement
|
|
WebEngineView.SuperA
|
|
WebEngineView.SuperB
|
|
WebEngineView.Postcard
|
|
WebEngineView.DoublePostcard
|
|
WebEngineView.Prc16K
|
|
WebEngineView.Prc32K
|
|
WebEngineView.Prc32KBig
|
|
WebEngineView.FanFoldUS
|
|
WebEngineView.FanFoldGerman
|
|
WebEngineView.FanFoldGermanLegal
|
|
WebEngineView.EnvelopeB4
|
|
WebEngineView.EnvelopeB5
|
|
WebEngineView.EnvelopeB6
|
|
WebEngineView.EnvelopeC0
|
|
WebEngineView.EnvelopeC1
|
|
WebEngineView.EnvelopeC2
|
|
WebEngineView.EnvelopeC3
|
|
WebEngineView.EnvelopeC4
|
|
WebEngineView.EnvelopeC5
|
=
C5E
|
WebEngineView.EnvelopeC6
|
|
WebEngineView.EnvelopeC65
|
|
WebEngineView.EnvelopeC7
|
|
WebEngineView.EnvelopeDL
|
=
DLE
|
WebEngineView.Envelope9
|
|
WebEngineView.Envelope10
|
=
Comm10E
|
WebEngineView.Envelope11
|
|
WebEngineView.Envelope12
|
|
WebEngineView.Envelope14
|
|
WebEngineView.EnvelopeMonarch
|
|
WebEngineView.EnvelopePersonal
|
|
WebEngineView.EnvelopeChou3
|
|
WebEngineView.EnvelopeChou4
|
|
WebEngineView.EnvelopeInvite
|
|
WebEngineView.EnvelopeItalian
|
|
WebEngineView.EnvelopeKaku2
|
|
WebEngineView.EnvelopeKaku3
|
|
WebEngineView.EnvelopePrc1
|
|
WebEngineView.EnvelopePrc2
|
|
WebEngineView.EnvelopePrc3
|
|
WebEngineView.EnvelopePrc4
|
|
WebEngineView.EnvelopePrc5
|
|
WebEngineView.EnvelopePrc6
|
|
WebEngineView.EnvelopePrc7
|
|
WebEngineView.EnvelopePrc8
|
|
WebEngineView.EnvelopePrc9
|
|
WebEngineView.EnvelopePrc10
|
|
WebEngineView.EnvelopeYou4
|
|
WebEngineView.LastPageSize
|
=
EnvelopeYou4
|
该 QML 特性在 QtWebEngine 1.3 引入。
另请参阅 WebEngineView::printToPdf() .
Describes the status with which the render process terminated:
| 常量 | 描述 |
|---|---|
WebEngineView.NormalTerminationStatus
|
渲染进程正常终止。 |
WebEngineView.AbnormalTerminationStatus
|
The render process terminated with a non-zero exit status. |
WebEngineView.CrashedTerminationStatus
|
渲染进程崩溃 (例如：由于分段故障)。 |
WebEngineView.KilledTerminationStatus
|
渲染进程被杀除，例如被
SIGKILL
或被任务管理器杀除。
|
该 QML 特性在 QtWebEngine 1.2 引入。
Describes the types of action that can be performed on a web page:
| 常量 | 描述 |
|---|---|
WebEngineView.NoWebAction
|
没有动作被触发。 |
WebEngineView.Back
|
在导航链接历史中后退导航。 |
WebEngineView.Forward
|
在导航链接历史中前进导航。 |
WebEngineView.Stop
|
停止加载当前页面。 |
WebEngineView.Reload
|
重新加载当前页面。 |
WebEngineView.ReloadAndBypassCache
|
重新加载当前页面，但不使用任何本地缓存。 |
WebEngineView.Cut
|
把目前选中内容剪切到剪贴板。 |
WebEngineView.Copy
|
把目前选中内容拷贝到剪贴板。 |
WebEngineView.Paste
|
从剪贴板粘贴内容。 |
WebEngineView.Undo
|
撤消上一编辑动作。 |
WebEngineView.Redo
|
重做上一编辑动作。 |
WebEngineView.SelectAll
|
Select all content. |
WebEngineView.PasteAndMatchStyle
|
采用当前样式从剪贴板粘贴内容。 |
WebEngineView.OpenLinkInThisWindow
|
在当前窗口打开当前链接 (在 Qt 5.6 添加)。 |
WebEngineView.OpenLinkInNewWindow
|
Open the current link in a new window. (Added in Qt 5.6) |
WebEngineView.OpenLinkInNewTab
|
Open the current link in a new tab. (Added in Qt 5.6) |
WebEngineView.CopyLinkToClipboard
|
把当前链接拷贝到剪贴板 (在 Qt 5.6 添加)。 |
WebEngineView.CopyImageToClipboard
|
把点击图像拷贝到剪贴板 (在 Qt 5.6 添加)。 |
WebEngineView.CopyImageUrlToClipboard
|
把点击图像的 URL 拷贝到剪贴板 (在 Qt 5.6 添加)。 |
WebEngineView.CopyMediaUrlToClipboard
|
把悬停音频 (或视频) 的 URL 拷贝到剪贴板 (在 Qt 5.6 添加)。 |
WebEngineView.ToggleMediaControls
|
在展示和隐藏悬停音频 (或视频) 元素控件之间触发 (在 Qt 5.6 添加)。 |
WebEngineView.ToggleMediaLoop
|
触发悬停音频 (或视频)是否应在完成时循环 (在 Qt 5.6 添加)。 |
WebEngineView.ToggleMediaPlayPause
|
触发悬停音频 (或视频) 元素的播放/暂停状态 (在 Qt 5.6 添加)。 |
WebEngineView.ToggleMediaMute
|
静音 (或取消静音) 悬停音频 (或视频) 元素 (在 Qt 5.6 添加)。 |
WebEngineView.DownloadLinkToDisk
|
Download the current link to the disk. To implement download actions, connect to the QWebEngineProfile::downloadRequested signal. (Added in Qt 5.6) |
WebEngineView.DownloadImageToDisk
|
Download the highlighted image to the disk. (Added in Qt 5.6) |
WebEngineView.DownloadMediaToDisk
|
Download the hovered audio or video to the disk. (Added in Qt 5.6) |
WebEngineView.InspectElement
|
触发任何附加 Web 审查程序以审查高亮元素 (在 Qt 5.6 添加)。 |
WebEngineView.ExitFullScreen
|
退出全屏模式 (在 Qt 5.6 添加)。 |
WebEngineView.SavePage
|
Save the current web page to disk. (Added in Qt 5.7) |
WebEngineView.ViewSource
|
Show the source of the current page in a new tab. (Added in Qt 5.8) |
该 QML 特性在 QtWebEngine 1.2 引入。
Specifies whether the view should gain active focus when pressed. The default value is
true
.
该 QML 特性在 QtWebEngine 1.2 引入。
The state of whether the current page audio is muted.
该 QML 特性在 QtWebEngine 1.3 引入。
另请参阅 recentlyAudible .
Changes the color of the
WebEngineView
's background, behind the document's body. Can be set to
"transparent"
or to a translucent color to see through the document or to match the web content in a hybrid app to prevent the white flashes that may appear during loading.
默认值为白色。
该 QML 特性在 QtWebEngine 1.2 引入。
返回
true
if there are prior session history entries,
false
否则。
返回
true
if there are subsequent session history entries,
false
否则。
Size of the page contents.
该 QML 特性在 QtWebEngine 1.3 引入。
|
[read-only] icon : url |
An internal URL for accessing the currently displayed web site icon, also known as favicon or shortcut icon. The icon is already downloaded and stored by the Qt WebEngine's favicon manager. This read-only URL corresponds to the image used within a mobile browser application to represent a bookmarked page on the device's home screen.
The following snippet uses the
icon
property to build an
图像
component:
Image { id: appIcon sourceSize: Qt.size(32, 32) source: webView.icon != "" ? webView.icon : "fallbackFavicon.png"; // ... }
指定
sourceSize
特性为
图像
element informs the Qt WebEngine's favicon provider about the requested size. The favicon provider tries to find the best fit among the web page candidate icons. If
sourceSize
property is not specified, the provider provides the icon with the largest resolution.
返回
true
if the web view is in fullscreen mode,
false
否则。
This QML property was introduced in QtWebEngine 1.1.
另请参阅 fullScreenRequested() and fullScreenCancelled() .
The amount of data from the page that has been loaded, expressed as an integer percentage in the range from
0
to
100
.
返回
true
if the HTML page is currently loading,
false
否则。
|
[read-only] navigationHistory : WebEngineHistory |
当前视图的导航历史。
This QML property was introduced in QtWebEngine 1.1.
另请参阅 WebEngineHistory .
|
profile : WebEngineProfile |
The current profile used for the view.
This QML property was introduced in QtWebEngine 1.1.
另请参阅 WebEngineProfile .
Returns the current page's audible state (audio was recently played, or not).
该 QML 特性在 QtWebEngine 1.3 引入。
另请参阅 audioMuted and recentlyAudibleChanged .
页面内容的卷动位置。
该 QML 特性在 QtWebEngine 1.3 引入。
|
[read-only] settings : WebEngineSettings |
Settings used by this view.
This QML property was introduced in QtWebEngine 1.1.
另请参阅 WebEngineSettings .
The title of the currently displayed HTML page. This is a read-only value that reflects the contents of the
<title>
标签。
|
url : url |
The location of the currently displayed HTML page. This writable property offers the main interface to load a page into a web view. It functions the same as the
window.location
DOM property.
另请参阅 loadHtml() .
|
[read-only] userScripts : list < WebEngineScript > |
List of script objects attached to the view.
This QML property was introduced in QtWebEngine 1.1.
另请参阅 WebEngineScript .
The web channel instance used by this view. This channel is automatically using the internal
QtWebEngine
transport mechanism over Chromium IPC, and exposed in the javascript context of the page it is rendering as
qt.webChannelTransport
. This transport object is used when instantiating the JavaScript counterpart of
QWebChannel
使用
Qt WebChannel JavaScript API
.
注意： The view does not take ownership for an assigned webChannel object.
This QML property was introduced in QtWebEngine 1.1.
JavaScript world that the web channel instance used by this view is installed in.
该 QML 特性在 QtWebEngine 1.3 引入。
Zoom factor for the view. Valid values are within the range from
0.25
to
5.0
。默认因子为
1.0
.
This QML property was introduced in QtWebEngine 1.1.
This signal is emitted when the ability of the web engine view to get focus when clicked changes.
This QML signal was introduced in QtWebEngine 1.2.
另请参阅 setActiveFocusOnPress() .
This signal is emitted when the page's audio is (un)muted using audioMuted 特性。
注意： Not to be confused with a specific HTML5 audio / video element being muted.
This QML signal was introduced in QtWebEngine 1.3.
另请参阅 audioMuted and recentlyAudibleChanged .
|
authenticationDialogRequested ( AuthenticationDialogRequest request ) |
This signal is emitted when an authentication dialog is requested.
The request can be handled by using the methods of the AuthenticationDialogRequest 类型。
注意：
Signal handlers need to call
request.accepted = true
to prevent a default dialog from showing up. Make sure to call either
AuthenticationDialogRequest::dialogAccept()
or
AuthenticationDialogRequest::dialogReject()
afterwards.
This QML signal was introduced in QtWebEngine 1.4.
This signal is emitted when the web engine view background color changes.
This QML signal was introduced in QtWebEngine 1.2.
|
certificateError ( WebEngineCertificateError error ) |
This signal is emitted when an invalid certificate error is raised while loading a given request.
The certificate error can be handled by using the methods of the WebEngineCertificateError 类型。
This QML signal was introduced in QtWebEngine 1.1.
|
colorDialogRequested ( ColorDialogRequest request ) |
This signal is emitted when a color picker dialog is requested.
The request can be handled by using the methods of the ColorDialogRequest 类型。
注意：
Signal handlers need to call
request.accepted = true
to prevent a default dialog from showing up. Make sure to call either
ColorDialogRequest::dialogAccept()
or
ColorDialogRequest::dialogReject()
afterwards.
This QML signal was introduced in QtWebEngine 1.4.
|
contextMenuRequested ( ContextMenuRequest request ) |
This signal is emitted when a context menu is requested.
The request can be handled by using the properties of the ContextMenuRequest 类型。
注意：
Signal handlers need to call
request.accepted = true
to prevent a default context menu from showing up.
This QML signal was introduced in QtWebEngine 1.4.
|
featurePermissionRequested ( url securityOrigin , Feature feature ) |
此信号被发射当网站被标识通过 securityOrigin 请求使用资源 (或设备) 的标识通过 feature .
This QML signal was introduced in QtWebEngine 1.1.
另请参阅 grantFeaturePermission() .
|
fileDialogRequested ( FileDialogRequest request ) |
This signal is emitted when a file picker dialog is requested.
The request error can be handled by using the methods of the FileDialogRequest 类型。
注意：
Signal handlers need to call
request.accepted = true
to prevent a default dialog from showing up. Make sure to call either
FileDialogRequest::dialogAccept()
or
FileDialogRequest::dialogReject()
afterwards.
This QML signal was introduced in QtWebEngine 1.4.
|
formValidationMessageRequested ( FormValidationMessageRequest request ) |
This signal is emitted when a validation message is requested.
The request can be handled by using the methods of the FormValidationMessageRequest 类型。
注意：
Signal handlers need to call
request.accepted = true
to prevent a default dialog from showing up.
This QML signal was introduced in QtWebEngine 1.4.
|
fullScreenRequested ( WebEngineFullScreenRequest request ) |
This signal is emitted when the web page requests fullscreen mode through the JavaScript API.
This QML signal was introduced in QtWebEngine 1.1.
另请参阅 isFullScreen .
|
javaScriptConsoleMessage ( JavaScriptConsoleMessageLevel level , string message , int lineNumber , string sourceID ) |
This signal is emitted when a JavaScript program tries to print a message to the web browser's console.
For example, in case of evaluation errors the source URL may be provided in sourceID as well as the lineNumber .
level indicates the severity of the event that triggered the message, that is, whether it was triggered by an error or a less severe event.
If no handler is specified, the view will log the messages into a
js
日志类别
.
另请参阅 控制台日志 .
|
javaScriptDialogRequested ( JavaScriptDialogRequest request ) |
This signal is emitted when a JavaScript dialog is requested.
The request can be handled by using the methods of the JavaScriptDialogRequest 类型。
注意：
Signal handlers need to call
request.accepted = true
to prevent a default dialog from showing up. Make sure to call either
JavaScriptDialogRequest::dialogAccept()
or
JavaScriptDialogRequest::dialogReject()
afterwards.
This QML signal was introduced in QtWebEngine 1.4.
|
linkHovered ( url hoveredUrl ) |
Within a mouse-driven interface, this signal is emitted when a mouse pointer passes over a link, corresponding to the
mouseover
DOM event. This event may also occur in touch interfaces for
mouseover
events that are not cancelled with
preventDefault()
.
hoveredUrl
provides the link's location.
|
loadingChanged ( WebEngineLoadRequest loadRequest ) |
This signal is emitted when a page load begins, ends, or fails.
When handling the signal with
onLoadingChanged
, various read-only parameters are available on the
WebEngineLoadRequest
指定通过
loadRequest
.
另请参阅 loading , LoadStatus ，和 ErrorDomain .
|
navigationRequested ( WebEngineNavigationRequest request ) |
This signal is emitted when the navigation request request is issued.
|
newViewRequested ( WebEngineNewViewRequest request ) |
This signal is emitted when a page load is requested to happen in a separate web engine view. This can either be because the current page requested it explicitly through a JavaScript call to
window.open
, or because the user clicked on a link while holding Shift, Ctrl, or a built-in combination that triggers the page to open in a new window.
If this signal is not handled, the requested load will fail.
An example implementation:
QtObject { id: windowParent // Create the initial browsing windows and open the startup page. Component.onCompleted: { var firstWindow = windowComponent.createObject(windowParent); firstWindow.webView.loadHtml('<input type="button" value="Click!" onclick="window.open("http://qt.io")">'); } property Component windowComponent: Window { // Destroy on close to release the Window's QML resources. // Because it was created with a parent, it won't be garbage-collected. onClosing: destroy() visible: true property WebEngineView webView: webView_ WebEngineView { id: webView_ anchors.fill: parent // Handle the signal. Dynamically create the window and // use its WebEngineView as the destination of our request. onNewViewRequested: function(request) { var newWindow = windowComponent.createObject(windowParent); request.openIn(newWindow.webView); } } } }
This QML signal was introduced in QtWebEngine 1.1.
另请参阅 NewViewDestination and WebEngine Quick 纳米浏览器 .
此信号被发射，当把网页打印成 PDF 文件完成时。
filePath
将包含请求创建的文件路径，且
success
将是
true
若成功创建文件且
false
否则。
This QML signal was introduced in QtWebEngine 1.5.
另请参阅 printToPdf() .
This signal is emitted when the page's audible state is changed, due to audio being played or stopped.
注意： The signal is also emitted when the audioMuted property changes. Also if the audio is paused, this signal is emitted with an approximate 2 秒延迟 ，从音频被暂停的那一刻起。
This signal is also emitted for Flash plugin audio.
If a web page contains two videos that are started in sequence, this signal gets emitted only once, for the first video to generate sound. After both videos are stopped, the signal is emitted upon the last sound generated. This means that the signal is emitted both when any kind of sound is generated and when everything is completely silent within a web page, regardless of the number of audio streams.
Spurious signal emissions might also happen. For example, when sound is stopped, this signal gets emitted first with a value of
true
, and then with a value of
false
. Further, when audio starts playing, the signal is emitted twice with a value of
true
.
This QML signal was introduced in QtWebEngine 1.3.
另请参阅 recentlyAudible .
|
renderProcessTerminated ( RenderProcessTerminationStatus terminationStatus , int exitCode ) |
此信号被发射当渲染进程采用非零退出状态被终止时。 terminationStatus 是进程的终止状态，且 exitCode 是进程终止的状态码。
This QML signal was introduced in QtWebEngine 1.2.
另请参阅 RenderProcessTerminationStatus .
This signal is emitted when the page's audible state is changed, due to audio being played or stopped.
注意： The signal is also emitted when calling the setAudioMuted method. Also if the audio is paused, this signal is emitted with an approximate 2 second delay ，从音频被暂停的那一刻起。
This QML signal was introduced in QtWebEngine 1.3.
此信号被发射每当页面请求关闭 Web 浏览器窗口时，例如透过 JavaScript
window.close()
调用。
This QML signal was introduced in QtWebEngine 1.2.
|
void findText ( string subString , FindFlags options , variant resultCallback ) |
查找指定字符串， subString ，在页面使用给定 options .
要清零搜索高亮，只需传递空字符串。
The resultCallback must take a boolean parameter. It will be called with a value of true if the subString was found; otherwise the callback value will be false.
findText("Qt", WebEngineView.FindCaseSensitively, function(success) { if (success) console.log("Qt was found!"); });
This QML method was introduced in QtWebEngine 1.1.
|
void findText ( string subString , FindFlags options ) |
查找指定字符串， subString ，在页面使用给定 options .
要清零搜索高亮，只需传递空字符串。
findText("Qt", WebEngineView.FindBackward | WebEngineView.FindCaseSensitively);
This QML method was introduced in QtWebEngine 1.1.
查找指定字符串， subString , in the page.
要清零搜索高亮，只需传递空字符串。
This QML method was introduced in QtWebEngine 1.1.
Immediately sets
isFullScreen
特性到
false
. It can be used to notify the browser engine when the windowing system forces the application to leave fullscreen mode.
ApplicationWindow { onVisibilityChanged: { if (webEngineView.isFullScreen && visibility != Window.FullScreen) webEngineView.fullScreenCancelled() } WebEngineView { id: webEngineView // ... } }
This QML method was introduced in QtWebEngine 1.1.
另请参阅 isFullScreen and fullScreenRequested() .
Go backward within the browser's session history, if possible. This function is equivalent to the
window.history.back()
DOM method.
另请参阅 canGoBack .
若 offset is positive, goes forward the specified number of offset pages in the current session history. If offset is negative, it goes back. If the offset is invalid, the page is not changed.
This QML method was introduced in QtWebEngine 1.1.
另请参阅 goBack() and goForward() .
Go forward within the browser's session history, if possible. This function is equivalent to the
window.history.forward()
DOM method.
|
void grantFeaturePermission ( url securityOrigin , Feature feature , bool granted ) |
Sets or unsets the permission, depending on granted , for the web site identified by securityOrigin 要使用 feature .
This QML method was introduced in QtWebEngine 1.1.
另请参阅 featurePermissionRequested() .
|
void loadHtml ( string html , url baseUrl ) |
加载指定 html as the content of the web view.
This method offers a lower-level alternative to the
url
property, which references HTML pages via URL.
External objects, such as stylesheets or images referenced in the HTML document, should be located relative to
baseUrl
. For example, if
html
检索自
http://www.example.com/documents/overview.html
，其是基 URL，然后相对 URL 引用图像，
diagram.png
，应该在
http://www.example.com/documents/diagram.png
.
另请参阅 url .
|
void printToPdf ( variant resultCallback , PrintedPageSizeId pageSizeId , PrintedPageOrientation orientation ) |
Prints the WebEngineView 's current content to a PDF document and returns it in a byte array. The document's size will be determined by the value of pageSizeId and its orientation will be determined using orientation .
The resultCallback must take a string parameter. This string will contain the document's data upon successful printing and an empty string otherwise.
If you leave out
pageSizeID
, it defaults to
A4
. If you leave out
orientation
, it defaults to
Portrait
.
This QML method was introduced in QtWebEngine 1.3.
|
void printToPdf (const string filePath , PrintedPageSizeId pageSizeId , PrintedPageOrientation orientation ) |
Prints the WebEngineView 's current content to a PDF document and stores it under filePath . The document's size will be determined by the value of pageSizeId and its orientation will be determined using orientation .
This method issues an asynchronous request for printing the web page into a PDF and returns immediately. To be informed about the result of the request, connect to the signal pdfPrintingFinished() .
If you leave out
pageSizeID
, it defaults to
A4
. If you leave out
orientation
, it defaults to
Portrait
.
This QML method was introduced in QtWebEngine 1.3.
另请参阅 pdfPrintingFinished() .
Reloads the current page. This function is equivalent to the
window.location.reload()
DOM method.
另请参阅 reloadAndBypassCache() .
Reloads the current page, ignoring any cached content.
This QML method was introduced in QtWebEngine 1.1.
另请参阅 reload() .
替换当前拼写错误单词采用 replacement .
This QML method was introduced in QtWebEngine 1.3.
|
void runJavaScript ( string script , variant callback ) |
Runs the specified script in the content of the web view.
The callback parameter is optional. If a callback function is provided, it will be invoked after the script finishes running.
runJavaScript("document.title", function(result) { console.log(result); });
The script will run in the same world as other scripts that are part of the loaded site.
警告： Do not execute lengthy routines in the callback function, because it might block the rendering of the web content.
见 WebEngineView::userScripts for an alternative API to inject scripts.
Sets active focus to a clicked web engine view if
arg
is
true
. By setting it to
false
, a web engine view can be used to create a UI element that should not get focus. This can be useful in a hybrid UI.
This QML method was introduced in QtWebEngine 1.2.
另请参阅 activeFocusOnPressChanged and WebEngineSettings::focusOnNavigationEnabled .
停止加载当前页面。
|
void triggerWebAction ( WebAction action ) |
触发 Web 动作 action .
This QML method was introduced in QtWebEngine 1.2.
另请参阅 WebAction .
