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Unsolved Signal for when a DOM resource finishes downloading?

November 20, 2015, 2:56 pm
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I have a website that loads DOM resources such as images, iframes, ajax, scripts, etc.

Running qt web engine on this website, I found a way for the render to time the exact moment these requests were initiated by subclassing QWebEngineUrlRequestInterceptor, and passing that class to m_page.profile()->setRequestInterceptor().

However, I would also like to time when these DOM resources finish downloading as well. This was possible in qt webkit, so I was hoping there's a way to do it for qt webengine.

One example I thought was the solution is the signal QWebEngineProfile::downloadRequested(QWebEngineDownloadItem *download). This signal allows me to access the QWebEngineDownloadItem object, which signals when the download has finished, which is basically what I am looking for. However, this signal doesn't ever seem to be executed. I think it is only run when e.g. the application user clicks on a download link, rather than being run for every DOM resource being downloaded.

Is there a way I can figure out when a DOM resource finishes downloading? I spent basically the entire day looking through documentations, but couldn't find anything. Any help would be appreciated!

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Sub-frames access

November 21, 2015, 3:02 am
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@knt261 Thank you very much! This permits access to the contents of the iframe from javascript

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Unsolved In 5.5.1 FancyBrowser (WebEngine-based) is crashed at the exit

November 21, 2015, 1:29 pm
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Unsolved How work with QWebEngineUrlRequestJob?

November 26, 2015, 12:55 am
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I have inherited from QWebEngineUrlSchemeHandler. Redefined method requestStarted(QWebEngineUrlRequestJob *request)
After I try to call QWebEngineUrlRequestJob::reply
for example

void CustomUrlSchemeHandler::requestStarted(QWebEngineUrlRequestJob *request)
{
qDebug() << "CustomUrlSchemeHandler::requestStarted -->>> " << request->requestUrl();

QMimeDatabase HelpViewer;
QMimeType mt = HelpViewer.mimeTypeForUrl(request->requestUrl());
const QString mimeType = mt.name();
QByteArray arr = QString::fromStdString("<html><body>Hello world</body></html>").toUtf8();
QBuffer *buffer = new QBuffer(&arr, this);
buffer->open(QIODevice::ReadOnly);
request->reply(mimeType.toLatin1(), buffer);

return;

}
But the program crashes.
pls see more detail - http://stackoverflow.com/questions/33933958/qt-5-6-beta-qtwebengine-how-work-with-qwebengineurlrequestjob

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Unsolved "Not allowed to load local resource" for iframe, how to disable web security ?!

November 26, 2015, 9:03 am
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@knt261

You can pass the "--disable-web-security" argument to the QApplication object in your main.cpp.

Hi – Can you show the code to do that (I'm new at this).

thanks!

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Unsolved Building QtWebEngine: invalid directive: '%param'

November 27, 2015, 1:53 am
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Trying to build QtWebEngine from current sources(followed this instructions https://wiki.qt.io/QtWebEngine_on_Windows), faced with problem where compilation breaks with this error message:

(set PATH=F:/webengine/qt5/gnuwin32/bin;%PATH:)=^)%) & win_bison --no-lines --skeleton=yacc.c --defines=glslang_tab.h --output=glslang_tab.cpp ..\..\..\3rdparty\angle\src\compiler\translator\glslang.y
..\\..\\..\\3rdparty\\angle\\src\\compiler\\translator\\glslang.y:48.1-6: error: invalid directive: '%param'
..\\..\\..\\3rdparty\\angle\\src\\compiler\\translator\\glslang.y:48.10-24: error: syntax error, unexpected {...}
NMAKE : fatal error U1077: '(set' : return code '0x1'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\BIN\amd64\nmake.EXE"' : return code '0x2'
Tried to google it, with no luck. Please help!
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Unsolved Passing/Changing Arguments to QtWebengineProcess

December 3, 2015, 2:34 pm
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Unsolved Static builds of QtWebEngine aren't supported.

December 7, 2015, 11:58 am
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Hi and welcome to devnet,

As stated by the error message, the static builds of QtWebEngine are not supported.

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Unsolved [Question] Crash if Url is incomplete

December 9, 2015, 11:12 am
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Good Evening Forum.
I have the following strange Problem:

When the Url contains only Strings like ftp:/, ftp://, http:/, http:// etc, the whole Application crashes. I wrote an very simple if else Checkpoint:

if(errorTestString.endsWith("ftp:/", Qt::CaseInsensitive) || errorTestString.endsWith("ftp://", Qt::CaseInsensitive)
|| errorTestString.endsWith("ftps:/", Qt::CaseInsensitive) || errorTestString.endsWith("ftps://", Qt::CaseInsensitive)
|| errorTestString.endsWith("http:/", Qt::CaseInsensitive) || errorTestString.endsWith("http://", Qt::CaseInsensitive)
|| errorTestString.endsWith("https:/", Qt::CaseInsensitive) || errorTestString.endsWith("https://", Qt::CaseInsensitive))
{
    //    QWebEnginePage::WebAction stopOnError;
    //stopOnError = QWebEnginePage::Stop;
    m_BrowserModule->triggerPageAction(QWebEnginePage::Stop, true);
  //m_BrowserModule->triggerPageAction(QWebEnginePage::Stop);

    QMessageBox::critical(this, "Invalid Url", "Please check Url");
     // m_BrowserModule->triggerPageAction(stopOnError);
     //m_BrowserModule->load(QUrl("www.google.de"));
    }
else if(!errorTestString.endsWith("ftp:/", Qt::CaseInsensitive) || !errorTestString.endsWith("ftp://", Qt::CaseInsensitive) || !errorTestString.endsWith("ftps:/", Qt::CaseInsensitive) || !errorTestString.endsWith("ftps://", Qt::CaseInsensitive)
|| !errorTestString.endsWith("http:/", Qt::CaseInsensitive) || !errorTestString.endsWith("http://", Qt::CaseInsensitive)
|| !errorTestString.endsWith("https:/", Qt::CaseInsensitive) || !errorTestString.endsWith("https://", Qt::CaseInsensitive))
{
 m_BrowserModule->load(loadEnteredUrl);
}

The Error Message in Debug Mode is:

[1209/200048:FATAL:gurl.cc(177)] Check failed: false. Trying to get the spec of an invalid URL!
Backtrace:
    QtWebEngineCore::FilePickerController::mode [0x0000000182639A06+178262]
    QtWebEngineCore::BrowserContextAdapter::httpCacheMaxSize [0x000000018253843D+6359197]
    QtWebEngineCore::URLRequestCustomJobDelegate::qt_static_metacall [0x0000000181D4084B+4492763]
    QtWebEngineCore::BrowserContextAdapter::customUrlSchemeHandlers [0x0000000180A6D029+4996313]
    QtWebEngineCore::BrowserContextAdapter::customUrlSchemeHandlers [0x0000000180A6DA9D+4998989]
    QtWebEngineCore::BrowserContextAdapter::customUrlSchemeHandlers [0x0000000180980E31+4029153]
    QtWebEngineCore::BrowserContextAdapter::customUrlSchemeHandlers [0x0000000180980A70+4028192]
    QtWebEngineCore::BrowserContextAdapter::customUrlSchemeHandlers [0x000000018097F75D+4023309]
    QtWebEngineCore::BrowserContextAdapter::customUrlSchemeHandlers [0x00000001809806B0+4027232]
    QtWebEngineCore::WebContentsAdapter::load [0x0000000180225A28+280]
    QWebEngineHistory::backItem [0x00007FF8491FD3CC+43449]
    QWebEngineHistory::backItem [0x00007FF849212765+130386]
    CBrowser::changeLocation [0x00007FF7E7E3B2C6+614] (c:\meineprogramme\gitprojects\aktool\cbrowser.cpp:65)
    CBrowser::qt_static_metacall [0x00007FF7E7E6D4CE+142] (c:\meineprogramme\gitprojects\build-aktool-5_6_git_debug-debug\debug\moc_cbrowser.cpp:122)
    QCoreApplicationPrivate::cleanupThreadData [0x000000005670BB12+4781628]
    QCoreApplicationPrivate::cleanupThreadData [0x000000005670B298+4779458]
    QSplashScreen::mousePressEvent [0x00000000572FA984+2850080]
    QSplashScreen::mousePressEvent [0x00000000572F6803+2833311]
    QCoreApplicationPrivate::cleanupThreadData [0x000000005670BB12+4781628]
    QCoreApplicationPrivate::cleanupThreadData [0x000000005670B298+4779458]
    QSplashScreen::mousePressEvent [0x000000005772B3A4+7243584]
    QSplashScreen::mousePressEvent [0x00000000573EC026+3838914]
    QSplashScreen::mousePressEvent [0x00000000572FB243+2852319]
    QSplashScreen::mousePressEvent [0x00000000570EF4E4+706688]
    QSplashScreen::mousePressEvent [0x00000000572FD20A+2860454]
    QSplashScreen::mousePressEvent [0x0000000057084C9E+270394]
    QSplashScreen::mousePressEvent [0x000000005707FB0B+249511]
    QCoreApplicationPrivate::cleanupThreadData [0x00000000566B8D46+4442224]
    QCoreApplicationPrivate::cleanupThreadData [0x0000000056818C6B+5883797]
    QSplashScreen::mousePressEvent [0x0000000057136092+996398]
    QSplashScreen::mousePressEvent [0x00000000571358C2+994398]
    QSplashScreen::mousePressEvent [0x0000000057084C9E+270394]
    QSplashScreen::mousePressEvent [0x000000005707F9B3+249167]
    QCoreApplicationPrivate::cleanupThreadData [0x00000000566B8D46+4442224]
    QCoreApplicationPrivate::cleanupThreadData [0x0000000056818C6B+5883797]
    QPlatformThemePrivate::initializeSystemPalette [0x00007FF8377594A2+548365]
    QPlatformThemePrivate::initializeSystemPalette [0x00007FF83775B9C7+557874]
    QPlatformThemePrivate::initializeSystemPalette [0x00007FF8377178D5+279104]
    QTextDocumentPrivate::q_func [0x00007FF83745D022+356351]
    QCoreApplicationPrivate::cleanupThreadData [0x000000005676D6D4+5181950]
    DispatchMessageW [0x00007FF85C521169+1673]
    DispatchMessageW [0x00007FF85C520C97+439]
    QCoreApplicationPrivate::cleanupThreadData [0x000000005676E1F5+5184799]
    QTextDocumentPrivate::q_func [0x00007FF83745CEF9+356054]
    QCoreApplicationPrivate::cleanupThreadData [0x00000000566B3958+4420738]
    QCoreApplicationPrivate::cleanupThreadData [0x00000000566B3B9E+4421320]
    QCoreApplicationPrivate::cleanupThreadData [0x00000000566B6ABF+4433385]
    QPlatformThemePrivate::initializeSystemPalette [0x00007FF837757128+539283]
    QSplashScreen::mousePressEvent [0x000000005707F4BA+247894]
    main [0x00007FF7E7E334DE+126] (c:\meineprogramme\gitprojects\aktool\main.cpp:17)
    invoke_main [0x00007FF7E7E72124+52] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:75)
    __scrt_common_main_seh [0x00007FF7E7E71FBE+302] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264)
    __scrt_common_main [0x00007FF7E7E71E7E+14] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:309)
    mainCRTStartup [0x00007FF7E7E72149+9] (f:\dd\vctools\crt\vcstartup\src\startup\exe_main.cpp:17)
    BaseThreadInitThunk [0x00007FF85C2A8102+34]
    RtlUserThreadStart [0x00007FF85E7FC2E4+52]

The program has unexpectedly finished.

The Error Message in Release Mode is:

[1209/200239:FATAL:navigation_controller_impl.cc(927)] Check failed: active_entry->site_instance() == rfh->GetSiteInstance(). 
The program has unexpectedly finished.

I know, it is unlikely that someone types only i.e. ftp:// but I know that I sometimes accidently hit the Enter Button. So it should not crash the whole Application. That is complete BS. If it is only a String like 'abc', you get the normal ERR_NAME_NOT_RESOLVED Page.

The Problem is, that calling the Stop Trigger to Stop loading the Page/Url, is already too late. The if else Checkpoint gets hit, but the Application crashes after that.
Thanks!

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Unsolved How to cross compile qtwebengine in embedded machine (linux arm) ?

December 11, 2015, 2:48 pm
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Are you sure you have the libraries built in the webengine sub-folder

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Unsolved Cant Run Application Created With QT5 And VS2013 In Windows XP

December 24, 2015, 2:48 pm
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Qt's precompiled package is compiled with v120 toolset not v120_xp, so you have to compile qt by yourself and configure with "-target xp"

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Unsolved QtWebEngine on git 5.6 branch build failed on Windows 7 whit MSVC2013

December 24, 2015, 6:11 pm
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I cloned the qt 5.6 source from git, when I build qt, everything was ok except qtwebengine module.
It failed with "NMAKE: fatal error U1073: don't know how to make "D:/Qt5/qt5/qtwebengine/src/core/Debug/obj\src\core\QtWebEngineCore.access_token_store_qt.obj"

It seems like access_token_store_qt.cpp didn't get compiled. Is anyone know how to build qtwebengine?

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Solved How to build 32 bit QtWebEngine on Mac

January 7, 2016, 2:29 pm
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Hi and welcome to devnet,

AFAIK from the Chromium project, builds for 32bit Macs have ended by the end of 2014.

Snow Leopard was the last version supporting 32 Bit processors.

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Unsolved How to set a viewport with QtWebEngine?

January 13, 2016, 1:10 am
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I have created a application with a QWebEngineView widget with a width of 500px. However when viewing websites like google.com the website is not recognizing the fact that it is a small windows and still displaying the full site.

Because of this you can only see the top corner of the webpage. I am assuming this is because QWebEngineView is not setting a viewport. This used to be possible in QWebKit, is there any work around for QWebEngine?

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Unsolved Stepping into QtWebEngineCore

January 16, 2016, 7:17 pm
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Hi, I'm trying to step into QtWebEngineCore (Qt 5.6) but I can't.It just steps over the function. Has any one encountered this? I looked at the modules window in visualstudio and it looks like the symbols for QtWebEngineCore.dll is being loaded and its loading the symbol file I expect. However the behavior is acting like there are no symbols.

All the other webengine modules I can step in and debug.

Any thoughts would be appreciated.

Thanks
Bryan

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QtWebEngine Flash (pepper) plugin

January 13, 2016, 1:47 am
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Unsolved Webengine - open in external browser

February 2, 2016, 1:43 pm
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Correct, you add the acceptNavigationRequest() to your QWebEnginePage derived class, then supply the guts for the function to open the user's default browser.
E.g.:

class MyWebPage : public QWebEnginePage { Q_OBJECT public: MyWebPage(QObject* parent = 0) : QWebEnginePage(parent){} bool acceptNavigationRequest(const QUrl & url, QWebEnginePage::NavigationType type, bool isMainFrame) { qDebug() << "acceptNavigationRequest("<<url << "," << type << "," << isMainFrame<<")"; if (type == QWebEnginePage::NavigationTypeLinkClicked) { QDesktopServices::openUrl(url); return false; } return true; } }
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Unsolved Building qtwebengine is error about python

February 2, 2016, 6:54 pm
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Hi all,

I have a question, I use the imx6 toolchain cross compile qtwebengine(qt5.4).
But , I have some error.

Error log:
/*****************************/
opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin//arm-fsl-linux-gnueabi-g++"...
using python: /usr/bin/python version: 2.7.6 (default, Jun 22 2015, 17:58:13)
[GCC 4.8.2]
Using extra options found in /mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/core/qmake_extras.gypi
Using extra options found in /mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/core/qtwebengine_extras.gypi
Updating projects from gyp files...
Exception: unexpected indent (qmake_extras.gypi, line 26)
Traceback (most recent call last):
File "/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/3rdparty/chromium/tools/gyp/pylib/gyp/input.py", line 484, in CallLoadTargetBuildFile
includes, depth, check, False)
File "/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/3rdparty/chromium/tools/gyp/pylib/gyp/input.py", line 373, in LoadTargetBuildFile
includes, True, check)
File "/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/3rdparty/chromium/tools/gyp/pylib/gyp/input.py", line 253, in LoadOneBuildFile
aux_data, includes, check)
File "/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/3rdparty/chromium/tools/gyp/pylib/gyp/input.py", line 290, in LoadBuildFileIncludesIntoDict
LoadOneBuildFile(include, data, aux_data, None, False, check),
File "/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/3rdparty/chromium/tools/gyp/pylib/gyp/input.py", line 233, in LoadOneBuildFile
None)
File "<string>", line 26
['CC', '/opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-gcc'],
^
IndentationError: unexpected indent while reading includes of /mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/core/core.gyp

Project ERROR: -- running gyp_qtwebengine failed --
make[3]: *** [Makefile.gyp_run] Error 3
make[3]: Leaving directory /mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/core' make[2]: *** [sub-gyp_run-pro-make_first] Error 2 make[2]: Leaving directory/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src/core'
make[1]: *** [sub-core-make_first] Error 2
make[1]: Leaving directory `/mnt/raid/peter/Freescale/FSL_LTIB_3.0.35_QT_5.4/Qt_5.4/qt-everywhere-opensource-src-5.4.0/qtwebengine/src'
make: *** [sub-src-make_first] Error 2
/*****************************/

I think the error about python syntax. But I don't know about python language.

Is the error have any patch to fix it ?
If you know the answer. Please help me, thx.

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Unsolved How to build QtWebEngine for android

February 5, 2016, 12:44 am
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Qt 5.6 QtWebEngine crashes on launch in Xcode on OSX 10.11

February 8, 2016, 2:47 pm
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Hi and welcome to devnet,

To enable Secure Transport just add -securetransportto your configure line.

What exactly was problematic when build your own Qt ?

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