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Thread: Re: mouse cursor transparency?
Re: mouse cursor transparency?
country flaguser name
Austria		 2007-03-29 05:01:36 

  


  

    
thanks for your answer, your code helps, but does not fix the problem completely. The black rectangle is now dark blue (like parts of the background) and almost transparent, but it is still visible...


regards, m_tw  




-----Ursprüngliche Nachricht-----
Von: joy.karangmail.com
Gesendet: 2007-3-29 14:07:48 +0530
An: "Manfred Twrznik/maennerseminare. at" MAENNERSEMINARE.AT>
Betreff: Re: [directfb-users] mouse cursor transparency?
try this code


   desc_t.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT;
    desc_t.width = 20; desc_t.height = 20;
   ; desc_t.pixelformat = DSPF_ARGB;

    DFBCHECK(dfb->CreateSurface(dfb, &desc_t, &cursor_surface)); 

    DFBCHECK(cursor_surface->SetBlittingFlags(cursor_surface,DSBLIT_BLEND_ALPHACHANNEL));
    DFBCHECK(cursor_surface->SetPorterDuff(cursor_surface,DSPD_SRC_OVER));
    DFBCHECK (dfb->CreateImageProvider (dfb, cursor, &provider)); ; // here cursor IS PATH for ur gif image 
    DFBCHECK (provider->GetSurfaceDescription (provider, &desc_t));
   ; DFBCHECK (provider->RenderTo (provider, cursor_surface, NULL));
    provider->Release (provider);
    DFBCHECK(dfbLayers->SetCursorShape(dfbLayers, cursor_surface,0 ,0)); 

    DFBCHECK (cursor_surface->SetBlittingFlags(cursor_surface,DSBLIT_NOFX));
    DFBCHECK (cursor_surface->SetPorterDuff(cursor_surface,DSPD_NONE ));




On 3/29/07, Manfred Twrznik/maennerseminare. at < manfred.twrznikmaennerseminare.at">manfred.twrznikmaennerseminare.at&gt; wrote: 



Hi,
I 'm trying to get a colorkeyed mouse cursor, but regardless what I try, it does not work. 


I use a layer, a full-screen window and a window-surface. For the mousecursor I use a gif-file, which ;is a white ;arrow in a black rectangle and has the color black marked as transparent. If I blit the picture somewhere at the window-surface, only the non-black part, e.g. the arrow ;of the gif is blitted. But if I use the same surface as a mousecursor, I have the whole gif (black rectangle and white arrow) as cursor.


Thanks in advance for your help!
M_Tw
  



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JOY 

  

  
  
   
     
    

  

    Re:  mouse cursor transparency?
  


  

     country flaguser name
Germany		
     2007-03-29 08:12:59
  


  

    
Manfred Twrznik/maennerseminare.at schrieb:
> thanks for your answer, your code helps, but does not
fix the problem 
> completely. The black rectangle is now dark blue (like
parts of the 
> background) and almost transparent, but it is still
visible...

A fix after 1.0.0 might help.

http://git.direc
tfb.org/?p=core/DirectFB.git;a=commit;h=3fcc94f1f0964fc19d5e
228ba4df8a67d1501090

-- 
Best regards,
   Denis Oliver Kropp

.------------------------------------------.
| DirectFB - Hardware accelerated graphics |
| http://www.directfb.org/
                |
"------------------------------------------"

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