how to make a splash screen with Qt

2010-02-08 Thread ibrahim 

hello there ;

I was wondering how to make a splash screen for my application using Qt, 
I found this link : 
http://wiki.maemo.org/Qt4_Hildon#QSplashScreen_not_fully_compatible_with_Hildon-Desktop 

telling that it is not compitable with maemo, So, it tried many 
workarounds (like creating a fullscreen window above my main window, and 
then hiding it after a while, But it blinks when it hide and the main 
view of my application is shown minimized when spalsh screen disappears.
Also tried to make my  main view window's central widget to be a splash 
screen widget and after a while i replace it with the original  central 
widget of the main view But it failed too)


So, I wonder if you have any other way/Maemo API to allow a splash 
screen to be properly shown .


thank you in advance;

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Re: how to make a splash screen with Qt

2010-02-08 Thread Kimmo Hämäläinen 
On Mon, 2010-02-08 at 09:50 +0100, ext ibrahim wrote:
 hello there ;
 
 I was wondering how to make a splash screen for my application using Qt, 
 I found this link : 
 http://wiki.maemo.org/Qt4_Hildon#QSplashScreen_not_fully_compatible_with_Hildon-Desktop
  
 
 telling that it is not compitable with maemo, So, it tried many 
 workarounds (like creating a fullscreen window above my main window, and 
 then hiding it after a while, But it blinks when it hide and the main 
 view of my application is shown minimized when spalsh screen disappears.
 Also tried to make my  main view window's central widget to be a splash 
 screen widget and after a while i replace it with the original  central 
 widget of the main view But it failed too)
 
 So, I wonder if you have any other way/Maemo API to allow a splash 
 screen to be properly shown .

You need to set a window property that tells HD to skip the transitions:

static void set_no_transitions (Display *dpy, Window w)
{
  Atom no_trans;
  int one = 1;
  no_trans = XInternAtom (dpy, _HILDON_WM_ACTION_NO_TRANSITIONS, False);
  XChangeProperty (dpy, w, no_trans,
   XA_CARDINAL, 32, PropModeReplace,
   (unsigned char *)one, 1);
}

--Kimmo

 
 thank you in advance;
 
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Re: how to make a splash screen with Qt

2010-02-08 Thread Timo Härkönen 
Hi


 You need to set a window property that tells HD to skip the transitions:

 static void set_no_transitions (Display *dpy, Window w)
 {
  Atom no_trans;
  int one = 1;
  no_trans = XInternAtom (dpy, _HILDON_WM_ACTION_NO_TRANSITIONS, False);
  XChangeProperty (dpy, w, no_trans,
   XA_CARDINAL, 32, PropModeReplace,
   (unsigned char *)one, 1);
 }


Thanks for the hint. I updated the wiki page with this information.

-Timo


 --Kimmo

 
  thank you in advance;
 
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Re: how to make a splash screen with Qt

2010-02-08 Thread Bernd Stramm 

On 08/02/10 14:15, Timo Härkönen wrote:

Hi


You need to set a window property that tells HD to skip the
transitions:

static void set_no_transitions (Display *dpy, Window w)
{
 Atom no_trans;
 int one = 1;
 no_trans = XInternAtom (dpy, _HILDON_WM_ACTION_NO_TRANSITIONS,
False);
 XChangeProperty (dpy, w, no_trans,
  XA_CARDINAL, 32, PropModeReplace,
  (unsigned char *)one, 1);
}


Thanks for the hint. I updated the wiki page with this information.

-Timo

Isn't this fixed in Qt 4.6? It seems to work on the FREMANTLE_X86. Also 
says that a few centimers down on the wiki.




--Kimmo


 thank you in advance;

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Re: how to make a splash screen with Qt

2010-02-08 Thread Timo Härkönen 
Hi

2010/2/8 Bernd Stramm bernd.str...@gmail.com

  On 08/02/10 14:15, Timo Härkönen wrote:

 Hi


  You need to set a window property that tells HD to skip the transitions:

 static void set_no_transitions (Display *dpy, Window w)
 {
  Atom no_trans;
  int one = 1;
  no_trans = XInternAtom (dpy, _HILDON_WM_ACTION_NO_TRANSITIONS, False);
  XChangeProperty (dpy, w, no_trans,
   XA_CARDINAL, 32, PropModeReplace,
   (unsigned char *)one, 1);
 }


 Thanks for the hint. I updated the wiki page with this information.

 -Timo

   Isn't this fixed in Qt 4.6? It seems to work on the FREMANTLE_X86. Also
 says that a few centimers down on the wiki.

 Yes but the current stable Qt for Maemo is still 4.5. Qt 4.6 is only
 available from extras-devel currently. Anyway it's good information to
 people working with 4.5


-Timo


 --Kimmo

 
  thank you in advance;
 
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