[Libreoffice] [GSoC 2011][svgexport] I need some help on exporting "all selected slides" task

[Marco]

On Wed, 08 Jun 2011 10:44:14 +0200, Christian Lippka <cl at lippka.com> wrote:

> Hi Marco,
>
> Am 08.06.2011 10:29, schrieb Thorsten Behrens:
>> Marco wrote:
>>> I hoped to get some type of object or container that let me to find
>>> the selected thumbnail slides out.
>>> On the contrary the result is that the selection type is "void",
>>> that means "no selection" IMO.
>>>
>>> So I don't know how to carry on this task.
>>>
>> Hi Marco,
>>
>> Cc-ing the list, this may be of public interest - for the moment, I
>> suggest you simply export *all* slides. Christian, off the top of
>> your head, is there a way to retrieve the current selection from the
>> Slidesorter via UNO?
> There is a SdUnoSlideView::getSelection implementation that puts all  
> selected slides as XDrawPage reference in a
> sequence so chances are good it does what you are looking for.
> The open question is how to get the correct XSelectionSupplier to call  
> getSelection on. I would hope that it is
> the obvious one, xModel->getCurrentController(). But Andrés view  
> hierarchy may be more complex than that.
> But it also depends if you only need this if you are actual in the slide  
> sorter view. If you need this from the slide panel
> than this may be more complicate. Feel free to ask about that specific  
> if you can't figure that out for yourself.
>

Hi Christian,
thanks for your quick reply.
Yes, the problem is how to get the correct XSelectionSupplier.
The present code find the current showed slide out:


         uno::Reference< frame::XDesktop > xDesktop( mxMSF->createInstance(  
::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM "com.sun.star.frame.Desktop"  
)) ), uno::UNO_QUERY);
         if( xDesktop.is() )
         {
             uno::Reference< frame::XFrame > xFrame(  
xDesktop->getCurrentFrame() );

             if( xFrame.is() )
             {
                 uno::Reference< frame::XController > xController(  
xFrame->getController() );

                 if( xController.is() )
                 {
                     uno::Reference< drawing::XDrawView > xDrawView(  
xController, uno::UNO_QUERY );
                     if( xDrawView.is() )
                     {
                         uno::Reference< drawing::XDrawPage > xDrawPage(  
xDrawView->getCurrentPage() );

                         if( xDrawPage.is() )
                         {
                             uno::Reference< beans::XPropertySet >(  
xDrawPage, uno::UNO_QUERY )->
                                 getPropertyValue( ::rtl::OUString(  
RTL_CONSTASCII_USTRINGPARAM( "Number" ) ) ) >>= nCurrentPageNumber;
                         }
                     }
                 }
             }
         }

I tried to get a XSelectionSupplier interface from the xController object  
above:

                     uno::Reference< view::XSelectionSupplier >  
xSelectionSupplier( xController, uno::UNO_QUERY );
                     if( xSelectionSupplier.is() )
                     {
                     	::com::sun::star::uno::Any aSelection =  
xSelectionSupplier->getSelection();
                     	OUString sTypeName = aSelection.getValueTypeName();
                     	OSL_TRACE("Selection Type: '%s'\n",   
OUStringToOString( sTypeName, RTL_TEXTENCODING_UTF8 ).getStr());
                     }
                     else
                     {
                     	OSL_TRACE ("xSelectionSupplier.is() == false");
                     }

but as I said aSelection internal type seems to be "void"
So from which controller should I get the XSelectionSupplier interface ?
You talk about an xModel object where should I get it from ?
I thought that I should get the frame/component representing the Slide  
sorter panel,
but I don't know how to do that, too.
Correctly you ask me where I am (that is which component/frame has the  
focus) when
I need this selection, well the answer is: inside the document export  
dialog, and
I guess that this makes all things more complex.


Cheers,
    Marco

-- 
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/