Qt WebKit

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  Qt 4.7 WebPage is a widget??
  • DavidGOrtega

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  [quote author="DavidGOrtega" date="1294502496"]I see... thats why I noted it so slow... but the returned types are still different...
  why aren't they returned as QVariant?[/quote]

  Well, actually, returning QVariant was a big design mistake of QtWebKit. If the javascript team manage to integrate QtScript to QtWebKit, we will deprecate the return as QVariant.

  Simple example you can't do with QVariant:
  -return a Javascript object and interact with it (call functions, set properties, etc)
  -return a JS function() and then call it from C++, or even pass it back to the engine

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  QWebKit - adding custom script objects to JavaScriptCore engine
  • rikardo

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  As Benjamin stated the only way to do this is using a factory pattern the trick here is returning the object created...

  @QVariant factory::createFSInstance() //this is a slot
  {
  FileSystem* fs = new FileSystem();
  this->_webView->mainFrame()->addToJavaScriptWindowObject("fsInstance", fs);

  return this->_webView->mainFrame()->evaluateJavascript("fsInstance;");
  }@

  in javascript looks:

  @var fs = factory.createFSInstance();
  fs.read(filename);@

  If you have a look to any CommonJS implementation like node.js they use require as a reserved method and of course the new desired impementation exists thought javascript objects that do what I have exposed loaded in a bootstrap.js. As I have said have a look to node.js to have an idea of what is happening behind

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  Login gmail problem
  • ryanyee

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  The release branches are on git: http://gitorious.org/+qtwebkit-developers/webkit/qtwebkit
  For some reason, QtWebKit 2.1 has not been released yet. It is very stable already, I doubt much will change before the release.

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  How to catch mouse click event on titlebar area of QGraphicsView
  • ificanfly

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  Thanks for your information and it helps.

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  QtWebKit on mobile phones (hybrid applications)
  • stenlik

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  This document will help you about "QtWebKit":http://doc.qt.nokia.com/4.7-snapshot/qtwebkit.html

  And how you can use QtWebKit in your mobile application is given here : "hands on introduction":http://www.forum.nokia.com/document/Mobile_Hands-on_Labs/Qt/QtWebKit/

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  Why qt 4.7 webview the web page does not support the JavaScript call form
  • seadak

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  [quote author="seadak" date="1293499700"]Thank you for the above, I mean when I use a jsp page <form> tag, I put a <input type=button clicked="callaJS()"> in <form> </ form> ，Like

  <form>
  <input type=button clicked="callaJS()">
  </ form>

  At this time, callaJS () does not perform, but when I put <input type=button clicked="callaJS()"> outside of <form> </ form> , Like

  <form>
  ...
  </ form>
  <input type=button clicked="callaJS()">
  ...

  callaJS () can do; in qt4. 6 do not have this problem, this issue found in 4.7;
  Do you have the same experience？Help me[/quote]

  I think you should file a bug on the "Qt Bug Tracker":http://bugreports.qt.nokia.com/secure/Dashboard.jspa but I am not sure if this could be a Qt 4.7.

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  Bind WebKit to another interface
  • Koshak01

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  Ok, you need get access to socket of QNetworkAccessManager class. Then you can set your networkAccessManager for QWebPage. But I not have any ideas, how you can do it.

• 

  QGraphicswebview and plugin
  • mprakash

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  Well that is possible, but not guaranteed in my opinion because what if the initialization for the loadFinished() signal fails, then all of your other signals which you are connecting against this will also fail. So If I were you I would have gone with onLoad().

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  Problems with Cache
  • jdarnold

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  Yes, the files show up in the cache folder but at this point I think it is something in the server set up. I'll let you know when I figure out more.

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  Strict Certificate policy support from QNetworkAccessManager
  • lonial

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  QWebView/QWebPage/QNetworkAccessManger by default reject content with SSL errors.

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  About exporting bindings to JavaScript
  • florent.revelut

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  Development started 1.5yrs ago and is based on Qt 4.6, some of this might be outdated or now documented. Thanks for pointing at these references, hope my few lines can still help a few lost developpers ;-)

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  Enabling JavaScript in QWebKit 4.7 over Symbian
  • hosamaly

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  I have exact same code but I am not using QwebView rather I am using QGraphicsWebview but my plugin widget signals are not working, any idea/??

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  Webkit , in Qt 4.7 on N900
  • jayan11in

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  Where can I find more information on how to use the remote inspector?
  Just in case: Is it possible to install the missing files on the n900 to use the inspector on the device? what are they?

• 

  Is there anyway to config qtwebkit?
  • kerry-qt

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  The build-webkit script has various options to enable and disable features. There's some information here http://trac.webkit.org/wiki/QtWebKit note that some of the options have missing #ifdef guards so you might need to hack around a bit.

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  QWebElement DOM Manipulation
  • poser

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  Why not use QWebSettings::setUserStyleSheetUrl()? It seems that one is meant for setting a style sheet for your page. You can get a pointer to your QWebSettings instance from your QWebPage instance.

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  Xine or mplayer plugin
  • niqt

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  Sorry, no, is not a secret.
  QMPWidget is one option, and the other is a little bit of ripping of the phonon libmplayer stuff. The basics are quite easy though. You basically pass the wID to an player process and control it using the slave interface.

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  Html5 on Windows Mobile
  • XerXi

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  "http://trac.webkit.org/wiki/QtWebKitSupportedStandards":http://trac.webkit.org/wiki/QtWebKitSupportedStandards

  I believe this support is already there... haven't tried though ...

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  Tuning input elements
  • Kxyu

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  For input elements, I would just tune the QStyle of the view.

• 

  WebKit + WindowsMobile
  • XerXi

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  [quote author="XerXi" date="1290160654"]
  I would know if I can do the web-based application with Qt-WebKit and detect when connection fall down, then launch automatically, and transparent for the user, the client application made with Qt too.
  [/quote]

  Yep, it is possible. You might have to detect the disconnection yourself and propagate it to the web sandbox but that is not a big deal.

  Quite a few application for embedded are made just like that actually.

  [quote author="XerXi" date="1290160654"]
  Is it easy or could be expensive/hard?
  [/quote]

  It is easy if you know C++.

  The one thing I don't know is the state of the port for Windows Mobile, especially now that Microsoft is killing the product. I work mainly on Linux embedded.

  You should ask on the forum "Mobile and Embedded" if Windows Mobile support is still active.

• 

  Netscape NPAPI and iframe
  • ndovp04

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  [quote author="ndovp04" date="1290014931"]Sorry for not being cleared. During the NPAPI windowless plugin process which eventually the NPP_SetWindow(NPP instance, NPWindow* window) will be invoked (in this case WebKit backend) to pass to the client plugin the window object. I like to know the NPWindow* should be casted to which QT object? I can't find any documentation about this.[/quote]

  It looks like its null, and the rendering surface is passed via the expose events. You can check PluginViewQt.cpp to get the details, I don't know much about the implementation.

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  Download WebKit example [solved]
  • luca

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  [quote author="Tobias Hunger" date="1289991069"]Download Qt sources. After unpacking the sources the example you are looking for should be in examples/webkit/imageanalyzer.[/quote]

  Thanks but I mean if it's possible to download example source from qt.gitorious.org without download all source.

  so I think it's not possible... :-)

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  QtWebKit plugins: Deletion and hiding
  • luisivan

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  Here is a code example.
  @QObject *WebPage::createPlugin(
  const QString &classid,
  const QUrl &url,
  const QStringList &paramNames,
  const QStringList & paramValues)
  {
  QWebView *view = new QWebView();
  view->load(QUrl("http://developer.qt.nokia.com/"));
  mainFrame()->addToJavaScriptWindowObject("renderer", view);
  return view;
  }@
  With a complex workaround embedding QWebViews into iframes I get the QWebView not to be deleted, but now the QWebViews shown in first plane, so them overlap and I cannot view all the QWebViews, only the last inserted.
  I cannot refuse to use a QWebView because an iframe does not offer the isolation that I want.
  Thanks for paying attention on my problem :)

• 

  [Solved] SVG displays stippled areas instead of solid
  • ggendel

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  [quote author="Benjamin Poulain" date="1289218305"]I also have no problem, you probably has missing extension on your X server.
  You can try the graphicssystem raster, it avoids lots of problems of X11.[/quote]

  Thanks... Works like a charm. I'll have to play around to see if this option causes any side-effects to other widgets.

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  Isolating an element of a QWebView
  • 1blah111111

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  anyone have any idea how to get it to let me delete the width attribute? (i can't manage to get it to delete that attribute)

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  QWebView + Qt aware HTML
  • bunjee

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  Yep, that is a good idea. That also avoid the double layout problem of my suggestion. As long as the CSS of the page does not use !important, that should do the trick.

• 

  Webkit, Disable selection
  • mprakash

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  is this the same as "this thread":http://developer.qt.nokia.com/forums/viewthread/1267/?

• 

  QWebView / QGraphicsWebView + Javascript HTML 5 music player
  • bunjee

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  Alright tested out this morning on Mac OS X.

  Using Cocoa: flash does not run at all. As expected after reading your blog post.

  Using Carbon: it works fine in both QWebView / QGraphicsWebView. So it appears to be something specific to Windows (Vista ?).

  Using Carbon on HTML 5: I get the exact same issues than on Windows PC, so I guess Phonon behave consistently :).

  Anyone can try running a simple QGraphicsWebView + "this url":http://www.happyworm.com/jquery/jplayer/latest/demo-02-nativeSupportFalse.htm on a Windows platform to double check it does not work ?

  Thanks.

  B.A.

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  [Solved] QtWebKit Bridge
  • DaveSab

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  Doh! That was pretty basic mistake. :-(

  And yes, I have already run into the problem with the .pro file.

  Thanks for the quick responses, and I'll get with the program when it comes to formatting...

• 

  Drop down lists in QGraphicsWebView
  • HaykG

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  [quote author="HaykG" date="1287317765"]Created the same bug in the webkit.org: "https://bugs.webkit.org/show_bug.cgi?id=47778":https://bugs.webkit.org/show_bug.cgi?id=47778[/quote]
  Please check the bug report, I asked you a question there. :)

  [quote author="HaykG" date="1287321858"]Also if possible could you please give some example/documentation of using that "platform plugin interface", because it would be the ideal case for me:)[/quote]

  There is not doc yet, this is still a feature in development. The idea is that platforms could provide some very specific implementations of features. In the case of combobox for example, you typically don't want them with touch interfaces, you want a fullscreen selection box for a better user interface (like on Maemo 5).

  You'll find the platform plugin interfaces here: "http://gitorious.org/webkit/webkit/blobs/master/WebKit/qt/Api/qwebkitplatformplugin.h":http://gitorious.org/webkit/webkit/blobs/master/WebKit/qt/Api/qwebkitplatformplugin.h

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  QGraphicsWebView smooth pixmap
  • bunjee

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  The flag QPainter::SmoothPixmapTransform only affects the way QGraphicsItem are transformed. For WebKit, this applies for AcceleratedCompositing, but not for regular transformed layers.

  QtWebKit 2.0 did not have antialiasing for transform. This has been enabled in QtWebKit 2.1. I suggest you to try with the branch 2.1 of WebKit to have high quality transforms.

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  Guidance needed in capturing Web page snapshot and session management
  • GoGetIt

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  bq.
  look at http://blog.forwardbias.in/2009/12/flash-in-qgraphicsview.html for more info).

  nice link, thanks :)

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  JavaScript types in C++
  • kyrie

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  bq. it’s better to find how Qt now supports conversion between some build-in types, for example – QString – I don’t know how it was done.

  Here is the code:
  "http://gitorious.org/webkit/qtwebkit/blobs/qtwebkit-2.1/WebCore/bridge/qt/qt_runtime.cpp":http://gitorious.org/webkit/qtwebkit/blobs/qtwebkit-2.1/WebCore/bridge/qt/qt_runtime.cpp

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  [Solved] "undefined reference" is thrown when compiling a custom class inheriting from QWebPage
  • jdecuyper

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  Wooow, the: "QT += webkit" did the trick, I can compile the all project now! :)

  Thank you so much for your time! It was really really appreciated!

• 

  [Solved] How to Embed Youtube Video
  • MamdouhAlShamy

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  thanks
  great snippet chetankjain

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  [Solved] QWebKit: Difference between a link-clicked vs meta-refresh at loadStarted() signal
  • bmahf

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  [quote author="bmahf" date="1286984397"]Fixed my problem. Thanks for the pointer.[/quote]

  Great. I am glad it helps.

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  Problem with rendering backgrounds on an included webpage
  • 1blah111111

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  and i've now restarted, and figured something else out, but that's going in a new topic. and here is the new topic: "here":http://developer.qt.nokia.com/forums/viewthread/1124/

• 

  MSVC linker: cannot open '../JavaScriptCore/release\jscore.lib'
  • jahewson

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  Static build are not supported for QtWebKit.

• 

  Disable text-alignment change when zooming the Web page
  • HaykG

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  You should not use QWebView, and especially not the zoomFactor() for touch based browsing.

  We have not had the time to do proper documentation about it but touch-based browsing is quite different from the regular browsing.

  For touch-based browsing, you generally use this:

  QGraphicsWebView Frame flattening Tiling zoom by scaling the QGraphicsWebView

  Some more info there:

  "http://gitorious.org/light":http://gitorious.org/light : basic browser for touch screen "http://gitorious.org/yberbrowser":http://gitorious.org/yberbrowser : an interesting browser for the N900 "https://bugs.webkit.org/show_bug.cgi?id=41465":https://bugs.webkit.org/show_bug.cgi?id=41465 the bug report about improving the documentation regarding those feature. A first patch is already available.

  Feel free to comment on bugzilla if you have ideas to improve the documentation further. If you have more questions, do not hesitate to ask them here on the forum.

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  QWebView problem with flash
  • TuBylem

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  If the flash players sends any kind of event you can get from JavaScript, you could add a C++ object to the context and add an event listener calling that object.

  bq. WebBrowser’s (C#) WebBrowserProgressChangedEvent sends to me the signal (-1), when the flash player has just finished his job

  How does that work? You receive the event when the content has finished playing? or finished loading? I guess you could subclass QNetworkAccessManager and wait for all request to be finished.

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  QT4.7 : Webkit crash when accessing an Url
  • esteban

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  You should post an small example we could run. The code snippet is not enough to find the bug in your code.

  I tend to think like chetankjain, the address of this or manager are invalid.