[Paraview] help: problem about message passing in paraview

[Nancy]

Dear Berk,

 

At first, thanks for your answers!

In the three steps you described:

"1. The gui elements make calls on an (C++) API called "server manager"
2. The server manager translates these into a stream that can be sent
  over the network
3. An interpreter receives these streams, parses them and converts
  them into C++ calls."

I have found the related source code for the second and third step, but I still could not find out that how the gui elements calls are passed to "server manager".

For example, when I choose the gui item "open data" in the "File" menu, the related processing source code is 

"this->MenuFile->InsertCommand(

clidx++, VTK_PV_OPEN_DATA_MENU_LABEL, this, "OpenCallback",0);"

 

And I also find the code that interpreter parses this stream as:

"int VTKTCL_EXPORT vtkPVWindowCppCommand(vtkPVWindow *op, Tcl_Interp *interp,

             int argc, char *argv[])

{

 

...

if ((!strcmp("OpenCallback",argv[1]))&&(argc == 2))

    {

    op->OpenCallback();

    Tcl_ResetResult(interp);

    return TCL_OK;

}

....

}"

 

BUT, I can not find the trace from gui element to server manager, that is the first step.

Can you explain this process for me using this example?

Please forgive my stupid, but I am indeed need some help.

 

Best,

Nancy



----- Original Message ----- 
From: "Berk Geveci" <berk.geveci at gmail.com>
To: "Nancy" <haifang_zhou at 163.com>
Cc: <paraview at paraview.org>
Sent: Tuesday, May 31, 2005 11:22 PM
Subject: Re: [Paraview] help: problem about message passing in paraview


The paraview architecture is a wee bit to complicated to describe in
an e-mail. The ParaView Guide explains it some. In short:

1. The gui elements make calls on an (C++) API called "server manager"
2. The server manager translates these into a stream that can be sent
over the network
3. An interpreter receives these streams, parses them and converts
them into C++ calls.

Instead of using something like CORBA, we developed a very simple and
light layer that is automatically generated at compile time (generated
pretty much the same way Tcl, Python and Java wrappers are generated
for VTK automatically).

-Berk

On 5/30/05, Nancy <haifang_zhou at 163.com> wrote:
> Hi, all,
>      I am reading the source code of paraview, and want to understand the message passing scheme in paraview.
> For example, when I push a button or choose an item in the menu on the client GUI, how this event is passed to the final related processing Class object?
> I can only find the begin end of the source code (e.g. create a menu item) and the final class of processing (e.g. a reader/source class), but I can not track the message passing process between the begin end and final methods of related class.
>     Who can give me an answer?   Thanks for any help!
> 
> Best,
> Nancy
> 
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> 
>