build for linux using libcef_dll_wrapper.so

[magreenblatt]

What are the contents of the directory that contains the above CMakeLists.txt file? Does it look like this: https://bitbucket.org/chromiumembedded/ ... stribution

[wrightpt]

Running cmake:



c@c:~/Downloads/myproject2/cefsimple/cefsimple$ cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug ..



output:


-- *** CEF CONFIGURATION SETTINGS ***
-- Generator: Unix Makefiles
-- Platform: Linux
-- Project architecture: x86_64
-- Build type: Debug
-- Binary distribution root: /home/c/Downloads/myproject2
-- Standard libraries: X11
-- Compile defines: __STDC_CONSTANT_MACROS;__STDC_FORMAT_MACROS;_FILE_OFFSET_BITS=64
-- Compile defines (Debug):
-- Compile defines (Release): NDEBUG
-- C compile flags: -fno-strict-aliasing;-fPIC;-fstack-protector;-funwind-tables;-fvisibility=hidden;--param=ssp-buffer-size=4;-pipe;-pthread;-Wall;-Werror;-Wno-missing-field-initializers;-Wno-unused-parameter;-m64;-march=x86-64 -std=c99;-Wno-unused-local-typedefs
-- C compile flags (Debug): -O0;-g
-- C compile flags (Release): -O2;-fdata-sections;-ffunction-sections;-fno-ident;-U_FORTIFY_SOURCE;-D_FORTIFY_SOURCE=2
-- C++ compile flags: -fno-strict-aliasing;-fPIC;-fstack-protector;-funwind-tables;-fvisibility=hidden;--param=ssp-buffer-size=4;-pipe;-pthread;-Wall;-Werror;-Wno-missing-field-initializers;-Wno-unused-parameter;-m64;-march=x86-64 -fno-exceptions;-fno-rtti;-fno-threadsafe-statics;-fvisibility-inlines-hidden;-std=gnu++11;-Wsign-compare;-Wno-literal-suffix;-Wno-narrowing
-- C++ compile flags (Debug): -O0;-g
-- C++ compile flags (Release): -O2;-fdata-sections;-ffunction-sections;-fno-ident;-U_FORTIFY_SOURCE;-D_FORTIFY_SOURCE=2
-- Exe link flags: -fPIC;-pthread;-Wl,--disable-new-dtags;-Wl,--fatal-warnings;-Wl,-rpath,.;-Wl,-z,noexecstack;-Wl,-z,now;-Wl,-z,relro;-m64
-- Exe link flags (Debug):
-- Exe link flags (Release): -Wl,-O1;-Wl,--as-needed;-Wl,--gc-sections
-- Shared link flags: -fPIC;-pthread;-Wl,--disable-new-dtags;-Wl,--fatal-warnings;-Wl,-rpath,.;-Wl,-z,noexecstack;-Wl,-z,now;-Wl,-z,relro;-m64
-- Shared link flags (Debug):
-- Shared link flags (Release): -Wl,-O1;-Wl,--as-needed;-Wl,--gc-sections
-- CEF Binary files: chrome-sandbox;libcef.so;natives_blob.bin;snapshot_blob.bin
-- CEF Resource files: cef.pak;cef_100_percent.pak;cef_200_percent.pak;cef_extensions.pak;devtools_resources.pak;icudtl.dat;locales
-- Configuring done
-- Generating done
-- Build files have been written to: /home/c/Downloads/myproject2/cefsimple
c@c:~/Downloads/myproject2/cefsimple/cefsimple$

[wrightpt]

I was able to get it to build. I was not setting the CEF_ROOT to the proper binary I think, however the Release version upon executing the executable:

X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 42 (X_SetInputFocus)
Serial number of failed request: 290
Current serial number in output stream: 292


The Debug version


X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 42 (X_SetInputFocus)
Serial number of failed request: 290
Current serial number in output stream: 292
[0623/092626:FATAL:context.cc(211)] Check failed: false. context not valid
#0 0x7f71822bc4ae base::debug::StackTrace::StackTrace()
#1 0x7f71823085ef logging::LogMessage::~LogMessage()
#2 0x7f7181f8de09 CefQuitMessageLoop()
#3 0x7f7181dd84c9 cef_quit_message_loop
#4 0x00000043b3ca CefQuitMessageLoop()
#5 0x0000004097cc SimpleHandler::OnBeforeClose()
#6 0x00000045e13d (anonymous namespace)::life_span_handler_on_before_close()
#7 0x7f7181e5595f CefLifeSpanHandlerCToCpp::OnBeforeClose()
#8 0x7f7181f30f1e CefBrowserHostImpl::DestroyBrowser()
#9 0x7f7181f6320f CefBrowserInfoManager::DestroyAllBrowsers()
#10 0x7f7181f8e3c0 CefContext::FinishShutdownOnUIThread()
#11 0x7f7181f8d9ed CefContext::Shutdown()
#12 0x7f7181f8cd26 (anonymous namespace)::CefForceShutdown::~CefForceShutdown()
#13 0x7f718080353a __cxa_finalize
#14 0x7f7181dd2553 <unknown>

Aborted (core dumped)



Here is a solution I am trying and will report back.


Found on StackOverflow: http://stackoverflow.com/questions/16720961/many-xsetinputfocuss-and-xsync-causes-error

From the documentation, it states the following:

The specified focus window must be viewable at the time XSetInputFocus is called, or a BadMatch error results. If the focus window later becomes not viewable, the X server evaluates the revert_to argument to determine the new focus window as follows:

If revert_to is RevertToParent, the focus reverts to the parent (or the closest viewable ancestor), and the new revert_to value is taken to be RevertToNone.

If revert_to is RevertToPointerRoot or RevertToNone, the focus reverts to PointerRoot or None, respectively. When the focus reverts, the X server generates FocusIn and FocusOut events, but the last-focus-change time is not affected.

XSetInputFocus can generate BadMatch, BadValue, and BadWindow errors.

So, I was missing a check to determine whether the window is viewable or not. The following change will fix the problem:

main()
{
// Obtain the X11 display.
Display *display = XOpenDisplay(0);
if(display == NULL)
return -1;

// Get the root window for the current display.
Window winRoot = XDefaultRootWindow(display);

WindowsMatchingPid wmp(display,winRoot,4344);
list<Window> lw = wmp.result();

for(list<Window>::iterator it=lw.begin(); it != lw.end(); it++ ){
XWindowAttributes attribute; // <-- Added
XGetWindowAttributes(display,*it,&attribute); // <-- Added
if(attribute.map_state == IsViewable ){ // <-- Added
XSetInputFocus(display,*it,RevertToParent,CurrentTime);
} // <-- Added
}
XCloseDisplay(display);
return 0;
}

[magreenblatt]

Looks OK to me.

[wrightpt]

Not sure how to do 2 things:

1) Implement custom class into CEF build and
2) showing, through resourcehandler, that I came from previous site

I am loading custom html with an iframe containing youtube, shown below.

I received the following message : "This video contains content from WMG. It is restricted form playback on certain sites. Watch on youtube"

The video will play by allowing CEF to say I have come from previous site such as youtube.com or google.com

How would I set the header so it seems like I am coming from a site such as google.com or youtube.com and then how would I entegrate the new class "MyResponseHeader" back into my CEF build. ?

Any push forward from what is below is appreciated:


from cef_request_handler.h:

virtual CefRefPtr<CefResourceHandler> GetResourceHandler(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request) {

return new MyResourceHandler();
//return NULL;
}

Below is a model for how to create a "MyResourceHandler class"




class MyResourceHandler : public CefResourceHandler
{
public:
MyResourceHandler() :
offset_(0)
{}

virtual bool ProcessRequest (CefRefPtr<CefRequest> request,
CefRefPtr<CefCallback> callback)
OVERRIDE;
virtual void GetResponseHeaders (CefRefPtr<CefResponse> response,
int64& response_length,
CefString& redirectUrl) OVERRIDE;
virtual void Cancel () OVERRIDE;

virtual bool ReadResponse (void* data_out, int bytes_to_read,
int& bytes_read,
CefRefPtr<CefCallback> callback)
OVERRIDE;

private:
CefRefPtr<CefRequest> request_;
std::string data_;
std::string mime_type_;
size_t offset_;

IMPLEMENT_REFCOUNTING(MyResourceHandler);
IMPLEMENT_LOCKING(MyResourceHandler);
};



HTML:


<!DOCTYPE html>
<html>
<body>
<iframe id="player" type="text/html" width="640" height="390"
src="http://www.youtube.com/embed/mt84J7U75e0?enablejsapi=1&origin=http://example.com"
frameborder="0"></iframe>
</body>
</html>

[wrightpt]

any thoughts on how to shop that CEF was at a previous site.

I was able to do this with Crosswalk by actually going to different sites then returning to the site and the video played fine.

How to set it in CEF code?

[wrightpt]

Marshall

im really just confused about how to modify the source code. How do I override either of the following methods. preferrably the second one?

virtual bool OnBeforeBrowse(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
bool is_redirect) {
return false;
}

virtual CefRefPtr<CefResourceHandler> GetResourceHandler(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request) {

// return new MyResourceHandler();
return NULL;

class MyResourceHandler : public CefResourceHandler
{
public:
MyResourceHandler() :
offset_(0)
{}

virtual bool ProcessRequest (CefRefPtr<CefRequest> request,
CefRefPtr<CefCallback> callback)
OVERRIDE;
virtual void GetResponseHeaders (CefRefPtr<CefResponse> response,
int64& response_length,
CefString& redirectUrl) OVERRIDE;
virtual void Cancel () OVERRIDE;

virtual bool ReadResponse (void* data_out, int bytes_to_read,
int& bytes_read,
CefRefPtr<CefCallback> callback)
OVERRIDE;

private:
CefRefPtr<CefRequest> request_;
std::string data_;
std::string mime_type_;
size_t offset_;

IMPLEMENT_REFCOUNTING(MyResourceHandler);
IMPLEMENT_LOCKING(MyResourceHandler);
};


Above, I have extended the CEFResourceHandler. How would I actually handle the new Request or the overwritten request. Where should I put this in the code and how do I go about actually creating the new request.
It seems it would involve what is below:

private:
CefRefPtr<CefRequest> request_;
std::string data_;
std::string mime_type_;
size_t offset_;

any input would be awesome. A short comment could potentially save me days at this point.

thanks

[magreenblatt]

Unfortunately I don't have time to give you detailed assistance. You should check the documentation and examples included with cefclient.