syllable-developer — General developer discussion and questions

Re: [Syllable-developer] Patch: ImageButton

[Kristian V. D. V. <va...@li...>]

On Sun, 2008-07-20 at 19:26 +0200, Jonas Jarvoll wrote:
> Thanks, Kristian! I think you told me before but I couldnt find the mail. 
> Yesterday I also had difficulties logging in to the CVS server but today it 
> worked just fine. Im must have been tired. Attached is the patch. I hope I 
> managed to get it right.

Looks fine (it's not critical if it's a unified context diff, unless
it's a huge diff and I have to read it for correctness first). I'll
apply it & check it in.

> There are some lines in the file that is not any true changes but I guess 
> thats because I have commented the lines and then uncomment them.

Yes, it's white-space changes. You can make diff ignore those, but it's
usually not an issue.

Thanks Jonas!

-- 
Vanders
http://www.syllable.org

Re: [Syllable-developer] Patch: ImageButton

[Jonas J. <jon...@sy...>]

Thanks, Kristian! I think you told me before but I couldnt find the mail. 
Yesterday I also had difficulties logging in to the CVS server but today it 
worked just fine. Im must have been tired. Attached is the patch. I hope I 
managed to get it right.

There are some lines in the file that is not any true changes but I guess 
thats because I have commented the lines and then uncomment them.

/Jonas

----- Original Message ----- 
From: "Kristian Van Der Vliet" <va...@li...>
To: <syl...@li...>
Sent: Sunday, July 20, 2008 12:30 PM
Subject: Re: [Syllable-developer] Patch: ImageButton


> On Fri, 2008-07-18 at 23:59 +0200, Jonas Jarvoll wrote:
>> Hm, I just realized the subject of the mail is a liittttle off-topic
>> to mail content so I send this again with a better subject. Sorry for
>> the doublepost but hopefully it will be easier to spot the patch now..
>
> Thanks for the patch, but could you resend it as an attachment, not
> inline? Patches placed inline in an email tend to get munged with extra
> linebreaks, which makes them very difficult to repair.
>
> I'll write up a proper FAQ entry too, but for now here's how to generate
> a diff against CVS:
>
> $ cvs diff -u > file.patch
>
> is all you need. -u creates a unified context diff, which is generally
> much easier to read.
>
> If you're diffing an entire directory, or tree, you can also do:
>
> $ cvs diff -urN > file.patch
>
> which is -recursive, and includes -New files in the patch.
>
> Hope that helps!
>
> -- 
> Vanders
> http://www.syllable.org
>
>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's 
> challenge
> Build the coolest Linux based applications with Moblin SDK & win great 
> prizes
> Grand prize is a trip for two to an Open Source event anywhere in the 
> world
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> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/syllable-developer 

Re: [Syllable-developer] Patch: ImageButton

[Kristian V. D. V. <va...@li...>]

On Fri, 2008-07-18 at 23:59 +0200, Jonas Jarvoll wrote:
> Hm, I just realized the subject of the mail is a liittttle off-topic
> to mail content so I send this again with a better subject. Sorry for
> the doublepost but hopefully it will be easier to spot the patch now..

Thanks for the patch, but could you resend it as an attachment, not
inline? Patches placed inline in an email tend to get munged with extra
linebreaks, which makes them very difficult to repair.

I'll write up a proper FAQ entry too, but for now here's how to generate
a diff against CVS:

$ cvs diff -u > file.patch

is all you need. -u creates a unified context diff, which is generally
much easier to read.

If you're diffing an entire directory, or tree, you can also do:

$ cvs diff -urN > file.patch

which is -recursive, and includes -New files in the patch.

Hope that helps!

-- 
Vanders
http://www.syllable.org

[Syllable-developer] Patch: ImageButton

[Jonas J. <jon...@sy...>]

Hm, I just realized the subject of the mail is a liittttle off-topic to mail content so I send this again with a better subject. Sorry for the doublepost but hopefully it will be easier to spot the patch now..

/Jonas
  ----- Original Message ----- 
  From: dem...@ne... 
  To: syl...@li... 
  Sent: Friday, July 18, 2008 11:51 PM
  Subject: Re: [Syllable-developer] Latest dev build: testing needed


  Fair enough.

  Dee Sharpe





  -----Original Message-----
  From: Jonas Jarvoll <jon...@sy...>
  To: syl...@li...
  Sent: Fri, 18 Jul 2008 4:44 pm
  Subject: Re: [Syllable-developer] Latest dev build: testing needed


  The code you pointed out is for underlining a single character and is used to indicate the shortcut key in e.g. buttons or menus. ImageButton wants to underline the complete text and not a single letter. Today it seems rather pointless putting the amount of work needed to get underlined text working in the AppServer when we dont know what will happen to the AppServer.

  Anyway here is a patch for ImageButton that I know is in the wrong format but I never managed to get it to make a diff against the CVS. I would be grateful if a short explanation how this in done is added to the developer FAQ as I seems to be doing this too seldom to remember it.

  131,132c131
  < Invalidate();
  < Sync();
  ---
  > Paint( GetBounds() );
  248c247
  < case IB_TEXT_RIGHT:
  ---
  > case IB_TEXT_RIGHT:
  253a253
  >
  259a260
  >
  265a267
  >
  275a278
  >
  314a318,320
  > float y = floor( ( cTextBounds.Height() + 1.0f ) / 2.0f - cTextSize.y /
  2.0f );
  > float x = floor( ( cTextBounds.Width() + 1.0f ) / 2.0f - cTextSize.x /
  2.0f );
  > cTextBounds += Point( x, y );
  329,332d334
  < float y = floor( ( cTextBounds.Height() + 1.0f ) / 2.0f - cTextSize.y /
  2.0f );
  < float x = floor( ( cTextBounds.Width() + 1.0f ) / 2.0f - cTextSize.x /
  2.0f );
  < cTextBounds += Point(x, y );
  <
  339,341d340
  < // FIXME: The current AppServer does not support underlined text
  < // This is a workaround by drawing a line under the text but
  < // the code should be removed when the AppServer supports underline
  text.
  344,346c343,344
  < SetFgColor(0, 0, 0 );
  < double y = cTextBounds.top + cTextBounds.Height()/2 +
  sHeight.ascender / 2;
  < DrawLine( Point( cTextBounds.left, y ), Point( cTextBounds.left +
  cTextSize.x, y ) );
  ---
  > SetFgColor( 0, 0, 0 );
  > DrawLine( Point( cTextBounds.left, cTextBounds.top + cTextSize.y -
  sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x,
  cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );


  /Jonas


    ----- Original Message ----- 
    From: dem...@ne... 
    To: syl...@li... 
    Sent: Friday, July 18, 2008 11:03 PM
    Subject: Re: [Syllable-developer] Latest dev build: testing needed


    In the file 'sys/appserver/appserver/server/render.cpp' lines 640 - 643 acknowledge that the text should be underlined & adjusts a few variables to account for it.  Lines 848 - 857 take care of the actual drawing of underlined text.

    Dee Sharpe 





    -----Original Message-----
    From: Jonas Jarvoll <jon...@sy...>
    To: syl...@li...
    Sent: Fri, 18 Jul 2008 10:27 am
    Subject: Re: [Syllable-developer] Latest dev build: testing needed


    I know where to change but I dont know what to change to (regarding alt 2), so no I dont really have a fix in mind. But OK, I'll see what I can come up with. 

    /Jonas
      ----- Original Message ----- 
      From: dem...@ne... 
      To: syl...@li... 
      Sent: Friday, July 18, 2008 2:55 PM
      Subject: Re: [Syllable-developer] Latest dev build: testing needed


      With that being the case, why not just go ahead & update the appserver, since you already have a fix in mind?

      Dee Sharpe





      -----Original Message-----
      From: Jonas Jarvoll <jon...@sy...>
      To: syl...@li...
      Sent: Thu, 17 Jul 2008 5:33 pm
      Subject: Re: [Syllable-developer] Latest dev build: testing needed


> >In Contact, after I added a contact, and clicked the "Show Contact" 



> >button, a



>>line is drawn through the text on the button (the contact still displays).



> It happens sometimes, but I'm not sure why.







When the ImageButton is in focus it wants to underline the label. This is 



done by drawing a line under the text (since the AppServer does not yet 



support true underline text). When the text position is not equal to 



IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 



and thats why you sometimes gets a line drawn through the text.







If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 



gone (but then you dont get any indication of the widget having focus):







As I see it there is three possiblities to fix this: 1) Wait until we have a 



AppServer that handles underline of text 2) Recalculate the position of the 



line to be positioned in the correct way 3) Dont draw the line (comment the 



row)







If this is important for pepole I can do alt 2 if you want. Otherwise I 



propose we wait for the major update of the AppServer (whatever/whenever it 



will be) which I assume will handle underline text in a proper way.







  337       if( IsEnabled() )



  338       {



  339           if( HasFocus() )



  340           {



  341               font_height sHeight;



  342               GetFontHeight( &sHeight );



  343               SetFgColor( 0, 0, 0 );



  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 



cTextSize.y - 



sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 



cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );



  345           }/Jonas 







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Re: [Syllable-developer] Latest dev build: testing needed

[<dem...@ne...>]

 Fair enough.

Dee Sharpe


 


 

-----Original Message-----
From: Jonas Jarvoll <jon...@sy...>
To: syl...@li...
Sent: Fri, 18 Jul 2008 4:44 pm
Subject: Re: [Syllable-developer] Latest dev build: testing needed
















The code you pointed out is for underlining a 
single character and is used to indicate the shortcut key in e.g. buttons or 
menus. ImageButton wants to underline the complete text and not a single letter. 
Today it seems rather pointless putting the amount of work needed?to get 
underlined text working in the AppServer when we dont know what will happen to 
the AppServer.


?


Anyway here is a patch for ImageButton that I know 
is in the wrong format but I never managed to get it to make a diff against the 
CVS. I would be grateful if a short explanation how this in done is added to the 
developer FAQ as I seems to be doing this too seldom to remember 
it.


?


131,132c131
< Invalidate();
< Sync();
---
> Paint( 
GetBounds() );
248c247
< case IB_TEXT_RIGHT:
---
> case 
IB_TEXT_RIGHT:
253a253
>
259a260
>
265a267
>
275a278
>
314a318,320
> 
float y = floor( ( cTextBounds.Height() + 1.0f ) / 2.0f - cTextSize.y /
2.0f 
);
> float x = floor( ( cTextBounds.Width() + 1.0f ) / 2.0f - cTextSize.x 
/
2.0f );
> cTextBounds += Point( x, y );
329,332d334
< float 
y = floor( ( cTextBounds.Height() + 1.0f ) / 2.0f - cTextSize.y /
2.0f 
);
< float x = floor( ( cTextBounds.Width() + 1.0f ) / 2.0f - cTextSize.x 
/
2.0f );
< cTextBounds += Point(x, y );
<
339,341d340
< 
// FIXME: The current AppServer does not support underlined text
< // This 
is a workaround by drawing a line under the text but
< // the code should 
be removed when the AppServer supports 
underline
text.
344,346c343,344
< SetFgColor(0, 0, 0 );
< 
double y = cTextBounds.top + cTextBounds.Height()/2 +
sHeight.ascender / 
2;
< DrawLine( Point( cTextBounds.left, y ), Point( cTextBounds.left 
+
cTextSize.x, y ) );
---
> SetFgColor( 0, 0, 0 );
> DrawLine( 
Point( cTextBounds.left, cTextBounds.top + cTextSize.y -
sHeight.line_gap - 
1.0f ), Point( cTextBounds.left + cTextSize.x,
cTextBounds.top + cTextSize.y 
- sHeight.line_gap - 1.0f ) );



?


/Jonas


?


?



  
----- Original Message ----- 

  
From: 
  dem...@ne... 
  

  
To: syl...@li... 
  

  
Sent: Friday, July 18, 2008 11:03 
PM

  
Subject: Re: [Syllable-developer] Latest 
  dev build: testing needed

  



  
In the file 
  'sys/appserver/appserver/server/render.cpp' lines 640 - 643 acknowledge that 
  the text should be underlined & adjusts a few variables to account for 
  it.? Lines 848 - 857 take care of the actual drawing of underlined 
  text.

Dee Sharpe 


  



  


-----Original Message-----
From: Jonas Jarvoll 
  <jon...@sy...>
To: 
  syl...@li...
Sent: 
  Fri, 18 Jul 2008 10:27 am
Subject: Re: [Syllable-developer] Latest dev 
  build: testing needed


  

  
I know where to change but I dont know what to 
  change to (regarding alt 2), so no I dont really have a fix in mind. But OK, 
  I'll see what I can come up with. 

  
?

  
/Jonas

  

    
----- 
    Original Message ----- 

    
From: 
    dem...@ne... 
    

    
To: 
    syl...@li... 
    

    
Sent: 
    Friday, July 18, 2008 2:55 PM

    
Subject: 
    Re: [Syllable-developer] Latest dev build: testing needed

    



    
With that being the case, why 
    not just go ahead & update the appserver, since you already have a fix 
    in mind?

Dee Sharpe


    



    


-----Original 
    Message-----
From: Jonas Jarvoll <jon...@sy...>
To: 
    syl...@li...
Sent: 
    Thu, 17 Jul 2008 5:33 pm
Subject: Re: [Syllable-developer] Latest dev 
    build: testing needed


    

> >In Contact, after I added a contact, and clicked the "Show Contact" 



> >button, a



>>line is drawn through the text on the button (the contact still displays).



> It happens sometimes, but I'm not sure why.







When the ImageButton is in focus it wants to underline the label. This is 



done by drawing a line under the text (since the AppServer does not yet 



support true underline text). When the text position is not equal to 



IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 



and thats why you sometimes gets a line drawn through the text.







If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 



gone (but then you dont get any indication of the widget having focus):







As I see it there is three possiblities to fix this: 1) Wait until we have a 



AppServer that handles underline of text 2) Recalculate the position of the 



line to be positioned in the correct way 3) Dont draw the line (comment the 



row)







If this is important for pepole I can do alt 2 if you want. Otherwise I 



propose we wait for the major update of the AppServer (whatever/whenever it 



will be) which I assume will handle underline text in a proper way.







  337       if( IsEnabled() )



  338       {



  339           if( HasFocus() )



  340           {



  341               font_height sHeight;



  342               GetFontHeight( &sHeight );



  343               SetFgColor( 0, 0, 0 );



  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 



cTextSize.y - 



sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 



cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );



  345           }/Jonas 







-------------------------------------------------------------------------



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    SF.Net email is sponsored by the Moblin Your Move Developer's 
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    mailing list
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-------------------------------------------------------------------------
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  SF.Net email is sponsored by the Moblin Your Move Developer's 
  challenge
Build the coolest Linux based applications with Moblin SDK & 
  win great prizes
Grand prize is a trip for two to an Open Source event 
  anywhere in the 
  world
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  mailing 
  list
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Re: [Syllable-developer] Latest dev build: testing needed

[Jonas J. <jon...@sy...>]

The code you pointed out is for underlining a single character and is used to indicate the shortcut key in e.g. buttons or menus. ImageButton wants to underline the complete text and not a single letter. Today it seems rather pointless putting the amount of work needed to get underlined text working in the AppServer when we dont know what will happen to the AppServer.

Anyway here is a patch for ImageButton that I know is in the wrong format but I never managed to get it to make a diff against the CVS. I would be grateful if a short explanation how this in done is added to the developer FAQ as I seems to be doing this too seldom to remember it.

131,132c131
< Invalidate();
< Sync();
---
> Paint( GetBounds() );
248c247
< case IB_TEXT_RIGHT:
---
> case IB_TEXT_RIGHT:
253a253
>
259a260
>
265a267
>
275a278
>
314a318,320
> float y = floor( ( cTextBounds.Height() + 1.0f ) / 2.0f - cTextSize.y /
2.0f );
> float x = floor( ( cTextBounds.Width() + 1.0f ) / 2.0f - cTextSize.x /
2.0f );
> cTextBounds += Point( x, y );
329,332d334
< float y = floor( ( cTextBounds.Height() + 1.0f ) / 2.0f - cTextSize.y /
2.0f );
< float x = floor( ( cTextBounds.Width() + 1.0f ) / 2.0f - cTextSize.x /
2.0f );
< cTextBounds += Point(x, y );
<
339,341d340
< // FIXME: The current AppServer does not support underlined text
< // This is a workaround by drawing a line under the text but
< // the code should be removed when the AppServer supports underline
text.
344,346c343,344
< SetFgColor(0, 0, 0 );
< double y = cTextBounds.top + cTextBounds.Height()/2 +
sHeight.ascender / 2;
< DrawLine( Point( cTextBounds.left, y ), Point( cTextBounds.left +
cTextSize.x, y ) );
---
> SetFgColor( 0, 0, 0 );
> DrawLine( Point( cTextBounds.left, cTextBounds.top + cTextSize.y -
sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x,
cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );


/Jonas


  ----- Original Message ----- 
  From: dem...@ne... 
  To: syl...@li... 
  Sent: Friday, July 18, 2008 11:03 PM
  Subject: Re: [Syllable-developer] Latest dev build: testing needed


  In the file 'sys/appserver/appserver/server/render.cpp' lines 640 - 643 acknowledge that the text should be underlined & adjusts a few variables to account for it.  Lines 848 - 857 take care of the actual drawing of underlined text.

  Dee Sharpe 





  -----Original Message-----
  From: Jonas Jarvoll <jon...@sy...>
  To: syl...@li...
  Sent: Fri, 18 Jul 2008 10:27 am
  Subject: Re: [Syllable-developer] Latest dev build: testing needed


  I know where to change but I dont know what to change to (regarding alt 2), so no I dont really have a fix in mind. But OK, I'll see what I can come up with. 

  /Jonas
    ----- Original Message ----- 
    From: dem...@ne... 
    To: syl...@li... 
    Sent: Friday, July 18, 2008 2:55 PM
    Subject: Re: [Syllable-developer] Latest dev build: testing needed


    With that being the case, why not just go ahead & update the appserver, since you already have a fix in mind?

    Dee Sharpe





    -----Original Message-----
    From: Jonas Jarvoll <jon...@sy...>
    To: syl...@li...
    Sent: Thu, 17 Jul 2008 5:33 pm
    Subject: Re: [Syllable-developer] Latest dev build: testing needed


> >In Contact, after I added a contact, and clicked the "Show Contact" 

> >button, a

>>line is drawn through the text on the button (the contact still displays).

> It happens sometimes, but I'm not sure why.



When the ImageButton is in focus it wants to underline the label. This is 

done by drawing a line under the text (since the AppServer does not yet 

support true underline text). When the text position is not equal to 

IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 

and thats why you sometimes gets a line drawn through the text.



If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 

gone (but then you dont get any indication of the widget having focus):



As I see it there is three possiblities to fix this: 1) Wait until we have a 

AppServer that handles underline of text 2) Recalculate the position of the 

line to be positioned in the correct way 3) Dont draw the line (comment the 

row)



If this is important for pepole I can do alt 2 if you want. Otherwise I 

propose we wait for the major update of the AppServer (whatever/whenever it 

will be) which I assume will handle underline text in a proper way.



  337       if( IsEnabled() )

  338       {

  339           if( HasFocus() )

  340           {

  341               font_height sHeight;

  342               GetFontHeight( &sHeight );

  343               SetFgColor( 0, 0, 0 );

  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 

cTextSize.y - 

sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 

cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );

  345           }/Jonas 



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Re: [Syllable-developer] Latest dev build: testing needed

[<dem...@ne...>]

 Just do a search within that file for the variable 'bUnderlineChar'.

Dee Sharpe


 


 

-----Original Message-----
From: Jonas Jarvoll <jon...@sy...>
To: syl...@li...
Sent: Fri, 18 Jul 2008 10:27 am
Subject: Re: [Syllable-developer] Latest dev build: testing needed
















I know where to change but I dont know what to 
change to (regarding alt 2), so no I dont really have a fix in mind. But OK, 
I'll see what I can come up with. 


?


/Jonas



  
----- Original Message ----- 

  
From: 
  dem...@ne... 
  

  
To: syl...@li... 
  

  
Sent: Friday, July 18, 2008 2:55 PM

  
Subject: Re: [Syllable-developer] Latest 
  dev build: testing needed

  



  
With that being the case, why 
  not just go ahead & update the appserver, since you already have a fix in 
  mind?

Dee Sharpe


  



  


-----Original 
  Message-----
From: Jonas Jarvoll <jon...@sy...>
To: 
  syl...@li...
Sent: 
  Thu, 17 Jul 2008 5:33 pm
Subject: Re: [Syllable-developer] Latest dev 
  build: testing needed


  

> >In Contact, after I added a contact, and clicked the "Show Contact" 

> >button, a

>>line is drawn through the text on the button (the contact still displays).

> It happens sometimes, but I'm not sure why.



When the ImageButton is in focus it wants to underline the label. This is 

done by drawing a line under the text (since the AppServer does not yet 

support true underline text). When the text position is not equal to 

IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 

and thats why you sometimes gets a line drawn through the text.



If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 

gone (but then you dont get any indication of the widget having focus):



As I see it there is three possiblities to fix this: 1) Wait until we have a 

AppServer that handles underline of text 2) Recalculate the position of the 

line to be positioned in the correct way 3) Dont draw the line (comment the 

row)



If this is important for pepole I can do alt 2 if you want. Otherwise I 

propose we wait for the major update of the AppServer (whatever/whenever it 

will be) which I assume will handle underline text in a proper way.



  337       if( IsEnabled() )

  338       {

  339           if( HasFocus() )

  340           {

  341               font_height sHeight;

  342               GetFontHeight( &sHeight );

  343               SetFgColor( 0, 0, 0 );

  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 

cTextSize.y - 

sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 

cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );

  345           }/Jonas 



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  SF.Net email is sponsored by the Moblin Your Move Developer's 
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Re: [Syllable-developer] Latest dev build: testing needed

[<dem...@ne...>]

In the file 'sys/appserver/appserver/server/render.cpp' lines 640 - 643 acknowledge that the text should be underlined & adjusts a few variables to account for it.? Lines 848 - 857 take care of the actual drawing of underlined text.

Dee Sharpe 


 


 

-----Original Message-----
From: Jonas Jarvoll <jon...@sy...>
To: syl...@li...
Sent: Fri, 18 Jul 2008 10:27 am
Subject: Re: [Syllable-developer] Latest dev build: testing needed
















I know where to change but I dont know what to 
change to (regarding alt 2), so no I dont really have a fix in mind. But OK, 
I'll see what I can come up with. 


?


/Jonas



  
----- Original Message ----- 

  
From: 
  dem...@ne... 
  

  
To: syl...@li... 
  

  
Sent: Friday, July 18, 2008 2:55 PM

  
Subject: Re: [Syllable-developer] Latest 
  dev build: testing needed

  



  
With that being the case, why 
  not just go ahead & update the appserver, since you already have a fix in 
  mind?

Dee Sharpe


  



  


-----Original 
  Message-----
From: Jonas Jarvoll <jon...@sy...>
To: 
  syl...@li...
Sent: 
  Thu, 17 Jul 2008 5:33 pm
Subject: Re: [Syllable-developer] Latest dev 
  build: testing needed


  

> >In Contact, after I added a contact, and clicked the "Show Contact" 

> >button, a

>>line is drawn through the text on the button (the contact still displays).

> It happens sometimes, but I'm not sure why.



When the ImageButton is in focus it wants to underline the label. This is 

done by drawing a line under the text (since the AppServer does not yet 

support true underline text). When the text position is not equal to 

IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 

and thats why you sometimes gets a line drawn through the text.



If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 

gone (but then you dont get any indication of the widget having focus):



As I see it there is three possiblities to fix this: 1) Wait until we have a 

AppServer that handles underline of text 2) Recalculate the position of the 

line to be positioned in the correct way 3) Dont draw the line (comment the 

row)



If this is important for pepole I can do alt 2 if you want. Otherwise I 

propose we wait for the major update of the AppServer (whatever/whenever it 

will be) which I assume will handle underline text in a proper way.



  337       if( IsEnabled() )

  338       {

  339           if( HasFocus() )

  340           {

  341               font_height sHeight;

  342               GetFontHeight( &sHeight );

  343               SetFgColor( 0, 0, 0 );

  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 

cTextSize.y - 

sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 

cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );

  345           }/Jonas 



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  SF.Net email is sponsored by the Moblin Your Move Developer's 
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Re: [Syllable-developer] Latest dev build: testing needed

[Jonas J. <jon...@sy...>]

I know where to change but I dont know what to change to (regarding alt 2), so no I dont really have a fix in mind. But OK, I'll see what I can come up with. 

/Jonas
  ----- Original Message ----- 
  From: dem...@ne... 
  To: syl...@li... 
  Sent: Friday, July 18, 2008 2:55 PM
  Subject: Re: [Syllable-developer] Latest dev build: testing needed


  With that being the case, why not just go ahead & update the appserver, since you already have a fix in mind?

  Dee Sharpe





  -----Original Message-----
  From: Jonas Jarvoll <jon...@sy...>
  To: syl...@li...
  Sent: Thu, 17 Jul 2008 5:33 pm
  Subject: Re: [Syllable-developer] Latest dev build: testing needed


> >In Contact, after I added a contact, and clicked the "Show Contact" 
> >button, a
>>line is drawn through the text on the button (the contact still displays).
> It happens sometimes, but I'm not sure why.

When the ImageButton is in focus it wants to underline the label. This is 
done by drawing a line under the text (since the AppServer does not yet 
support true underline text). When the text position is not equal to 
IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 
and thats why you sometimes gets a line drawn through the text.

If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 
gone (but then you dont get any indication of the widget having focus):

As I see it there is three possiblities to fix this: 1) Wait until we have a 
AppServer that handles underline of text 2) Recalculate the position of the 
line to be positioned in the correct way 3) Dont draw the line (comment the 
row)

If this is important for pepole I can do alt 2 if you want. Otherwise I 
propose we wait for the major update of the AppServer (whatever/whenever it 
will be) which I assume will handle underline text in a proper way.

  337       if( IsEnabled() )
  338       {
  339           if( HasFocus() )
  340           {
  341               font_height sHeight;
  342               GetFontHeight( &sHeight );
  343               SetFgColor( 0, 0, 0 );
  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 
cTextSize.y - 
sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 
cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );
  345           }/Jonas 

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Build the coolest Linux based applications with Moblin SDK & win great prizes
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Re: [Syllable-developer] Latest dev build: testing needed

[<dem...@ne...>]

 With that being the case, why not just go ahead & update the appserver, since you already have a fix in mind?

Dee Sharpe


 


 

-----Original Message-----
From: Jonas Jarvoll <jon...@sy...>
To: syl...@li...
Sent: Thu, 17 Jul 2008 5:33 pm
Subject: Re: [Syllable-developer] Latest dev build: testing needed










> >In Contact, after I added a contact, and clicked the "Show Contact" 
> >button, a
>>line is drawn through the text on the button (the contact still displays).
> It happens sometimes, but I'm not sure why.

When the ImageButton is in focus it wants to underline the label. This is 
done by drawing a line under the text (since the AppServer does not yet 
support true underline text). When the text position is not equal to 
IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 
and thats why you sometimes gets a line drawn through the text.

If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 
gone (but then you dont get any indication of the widget having focus):

As I see it there is three possiblities to fix this: 1) Wait until we have a 
AppServer that handles underline of text 2) Recalculate the position of the 
line to be positioned in the correct way 3) Dont draw the line (comment the 
row)

If this is important for pepole I can do alt 2 if you want. Otherwise I 
propose we wait for the major update of the AppServer (whatever/whenever it 
will be) which I assume will handle underline text in a proper way.

  337       if( IsEnabled() )
  338       {
  339           if( HasFocus() )
  340           {
  341               font_height sHeight;
  342               GetFontHeight( &sHeight );
  343               SetFgColor( 0, 0, 0 );
  344               DrawLine( Point( cTextBounds.left, cTextBounds.top + 
cTextSize.y - 
sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 
cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );
  345           }/Jonas 

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Re: [Syllable-developer] Latest dev build: testing needed

[Jonas J. <jon...@sy...>]

> >In Contact, after I added a contact, and clicked the "Show Contact" 
> >button, a
>>line is drawn through the text on the button (the contact still displays).
> It happens sometimes, but I'm not sure why.

When the ImageButton is in focus it wants to underline the label. This is 
done by drawing a line under the text (since the AppServer does not yet 
support true underline text). When the text position is not equal to 
IB_TEXT_TOP the ImageButton simply calculates the position of the line wrong 
and thats why you sometimes gets a line drawn through the text.

If you comment the line 344 (DrawLine...) in imagebutton.cpp the problem is 
gone (but then you dont get any indication of the widget having focus):

As I see it there is three possiblities to fix this: 1) Wait until we have a 
AppServer that handles underline of text 2) Recalculate the position of the 
line to be positioned in the correct way 3) Dont draw the line (comment the 
row)

If this is important for pepole I can do alt 2 if you want. Otherwise I 
propose we wait for the major update of the AppServer (whatever/whenever it 
will be) which I assume will handle underline text in a proper way.

  337 		if( IsEnabled() )
  338 		{
  339 			if( HasFocus() )
  340 			{
  341 				font_height sHeight;
  342 				GetFontHeight( &sHeight );
  343 				SetFgColor( 0, 0, 0 );
  344 				DrawLine( Point( cTextBounds.left, cTextBounds.top + cTextSize.y - 
sHeight.line_gap - 1.0f ), Point( cTextBounds.left + cTextSize.x, 
cTextBounds.top + cTextSize.y - sHeight.line_gap - 1.0f ) );
  345 			}/Jonas 

Re: [Syllable-developer] Latest dev build: testing needed

[Anthony M. <aw...@gm...>]

Hi Bill,
The problem with shutting down has been noticed before, see eg
http://forum.syllable-norden.info/viewtopic.php?t=1055 . You can use
"shutdown -f" or "reboot -f" to force a shutdown or reboot just like
pressing ctrl+alt+del.
Would you mind checking the debug log at /var/log/kernel to see if there are
any messages relating to the stalled shutdown? If you shutdown via the menu
(or via "shutdown"), then ctrl+alt+del after a minute or so, then reboot
into syllable again and scroll back about 5 or so screenfulls in the log you
should find the relevant part. Maybe we can work out which app(s) are
stalling the shutdown and fix them.

For developing, Vmware (or similar, I use VirtualPC) is very good (although
compiling is slooow). It makes it easy to use the kernel serial debugger to
capture messages or safely reboot when everything else has crashed. See
http://web.syllable.org/documentation/FAQ.html#4_3 for enabling serial
debugger, and this utility http://shvechkov.tripod.com/nptp.html  (beware
popups) can be useful.

Anthony

2008/7/16 bill <bil...@gm...>:

> I installed it on one of my boxes... I'll try to do a few more, and I'll
> run
> the test when I get a chance.
>
> At any rate, it detected that box's AGP GeForce 440MX without a problem,
> and I
> was able to switch to a few different refresh rates/color
> palettes/resolutions.
>
> I'm pretty impressed with the build overall.  It wouldn't let me shutdown
> normally (via the quit button).  I also tried opening up a terminal and
> typing shutdown.  It said "shutting down..." and then did nothing.  I gave
> it
> the three-finger salute and that finally worked.
>
> Other than that I only noticed a couple of issues with the applications...
>
> Abrowse is currently under heavy development, right?  It gave me some
> trouble
> (slow to load complex pages/large images, doesn't work at all on gmail).
>
> In Contact, after I added a contact, and clicked the "Show Contact" button,
> a
> line is drawn through the text on the button (the contact still displays).
> Not sure what would cause this?  Why not just have it so that clicking on
> the
> contact itself (in the listbox) would bring up that person's info?  Where
> could I find the source?  This was Flemming's app, right?  Is he still
> maintaining it?  I thought I read that he had moved on from Syllable.  My
> apologies if it's a touchy subject.
>
> Anyways, looking very nice.  Aedit looks really clean cut.  I like the
> Beish
> decorator  :o)  If I wanted to do some application development, would it be
> wise to base it off of this build?  Is it easier to develop on VMware?
>
> Bill
>
> On Tuesday 15 July 2008 05:11:24 am Kristian Van Der Vliet wrote:
> > Hi all,
> >
> > We've produced a new development build of Syllable 0.6.6 which now
> > contains all of the AGP HCDs too date. We would appreciate it if as many
> > people as possible could install this development build on as many
> > different configurations as possible, and run the AGP tester that Dee
> > posted to this mailing list on the 8th July and provide the results.
> >
> > All of these drivers have all been built with debugging enabled, so a
> > copy of the relevant section of the kernel log would also be
> > appreciated.
> >
> > If the driver(s) fail on your hardware, please provide details and if
> > possible, the kernel log to aid debugging.
> >
> > Please note that as Dee mentioned, the nVidia HCD is known not to work
> > at this point and Kaj has reported an issue with the Via HCD which may
> > or may not exist on all Via chipsets. There are as yet no drivers for
> > Intel, AMD, newer nVidia chipsets and some others which are covered by
> > the AMD & Intel drivers, so support for your chipset may be coming at a
> > later date.
> >
> > Testing is the only way we'll know for certain if these drivers work as
> > intended!
>
>
>
> -------------------------------------------------------------------------
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> challenge
> Build the coolest Linux based applications with Moblin SDK & win great
> prizes
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>

Re: [Syllable-developer] Latest dev build: testing needed

[Flemming <fle...@sy...>]

>In Contact, after I added a contact, and clicked the "Show Contact" button, a 
>line is drawn through the text on the button (the contact still displays).  
It happens sometimes, but I'm not sure why.

>Why not just have it so that clicking on the contact itself (in the listbox) would
>bring up that person's info?
I didn't know how to do that, back then...

>Where could I find the source?
In CVS: apps/collab/Contact


// Flemming

Re: [Syllable-developer] Latest dev build: testing needed

[Kristian V. D. V. <va...@li...>]

On Wed, 2008-07-16 at 01:11 -0700, bill wrote:
> I installed it on one of my boxes... I'll try to do a few more, and I'll run 
> the test when I get a chance.

Cool, thanks. Your help is appreciated!

> I'm pretty impressed with the build overall.  It wouldn't let me shutdown 
> normally (via the quit button).  I also tried opening up a terminal and 
> typing shutdown.  It said "shutting down..." and then did nothing.  I gave it 
> the three-finger salute and that finally worked.
> 
> Other than that I only noticed a couple of issues with the applications...
> 
> Abrowse is currently under heavy development, right?  It gave me some trouble 
> (slow to load complex pages/large images, doesn't work at all on gmail).

As a general rule development builds tend to have bugs, including this
one (very slow curl/ABrowse performance) ABrowse itself is undergoing a
re-write, although the engine (WebCore) will be the same between the
latest version & the new browser.

If you find any bugs it's best to report them in the "Bugs" section of
the forums so we can track them. Just check that they havn't already
been reported and post away!

> If I wanted to do some application development, would it be 
> wise to base it off of this build?  Is it easier to develop on VMware?

You should start with the latest release version, which is 0.6.5.
Development builds are just a snapshot of CVS, so may be unstable and
have no upgrade path between releases, so they're not really suitable
for everyday use.

You can use VMWare, if you find that more convenient. Syllable supports
all of the emulated hardware and works well with VMWare, although things
obviously tend to be a little faster on real hardware.
 
-- 
Vanders
http://www.syllable.org

Re: [Syllable-developer] Latest dev build: testing needed

[bill <bil...@gm...>]

I installed it on one of my boxes... I'll try to do a few more, and I'll run 
the test when I get a chance.

At any rate, it detected that box's AGP GeForce 440MX without a problem, and I 
was able to switch to a few different refresh rates/color 
palettes/resolutions.

I'm pretty impressed with the build overall.  It wouldn't let me shutdown 
normally (via the quit button).  I also tried opening up a terminal and 
typing shutdown.  It said "shutting down..." and then did nothing.  I gave it 
the three-finger salute and that finally worked.

Other than that I only noticed a couple of issues with the applications...

Abrowse is currently under heavy development, right?  It gave me some trouble 
(slow to load complex pages/large images, doesn't work at all on gmail).

In Contact, after I added a contact, and clicked the "Show Contact" button, a 
line is drawn through the text on the button (the contact still displays).  
Not sure what would cause this?  Why not just have it so that clicking on the 
contact itself (in the listbox) would bring up that person's info?  Where 
could I find the source?  This was Flemming's app, right?  Is he still 
maintaining it?  I thought I read that he had moved on from Syllable.  My 
apologies if it's a touchy subject.

Anyways, looking very nice.  Aedit looks really clean cut.  I like the Beish 
decorator  :o)  If I wanted to do some application development, would it be 
wise to base it off of this build?  Is it easier to develop on VMware?

Bill

On Tuesday 15 July 2008 05:11:24 am Kristian Van Der Vliet wrote:
> Hi all,
>
> We've produced a new development build of Syllable 0.6.6 which now
> contains all of the AGP HCDs too date. We would appreciate it if as many
> people as possible could install this development build on as many
> different configurations as possible, and run the AGP tester that Dee
> posted to this mailing list on the 8th July and provide the results.
>
> All of these drivers have all been built with debugging enabled, so a
> copy of the relevant section of the kernel log would also be
> appreciated.
>
> If the driver(s) fail on your hardware, please provide details and if
> possible, the kernel log to aid debugging.
>
> Please note that as Dee mentioned, the nVidia HCD is known not to work
> at this point and Kaj has reported an issue with the Via HCD which may
> or may not exist on all Via chipsets. There are as yet no drivers for
> Intel, AMD, newer nVidia chipsets and some others which are covered by
> the AMD & Intel drivers, so support for your chipset may be coming at a
> later date.
>
> Testing is the only way we'll know for certain if these drivers work as
> intended!

[Syllable-developer] Latest dev build: testing needed

[Kristian V. D. V. <va...@li...>]

Hi all,

We've produced a new development build of Syllable 0.6.6 which now
contains all of the AGP HCDs too date. We would appreciate it if as many
people as possible could install this development build on as many
different configurations as possible, and run the AGP tester that Dee
posted to this mailing list on the 8th July and provide the results.

All of these drivers have all been built with debugging enabled, so a
copy of the relevant section of the kernel log would also be
appreciated.

If the driver(s) fail on your hardware, please provide details and if
possible, the kernel log to aid debugging.

Please note that as Dee mentioned, the nVidia HCD is known not to work
at this point and Kaj has reported an issue with the Via HCD which may
or may not exist on all Via chipsets. There are as yet no drivers for
Intel, AMD, newer nVidia chipsets and some others which are covered by
the AMD & Intel drivers, so support for your chipset may be coming at a
later date.

Testing is the only way we'll know for certain if these drivers work as
intended!

-- 
Vanders
http://www.syllable.org

[Syllable-developer] nVidia agp hcd - bad

[<dem...@ne...>]

I just found that the nVidia hcd agp driver crashes while trying to initialize, I'll troubleshoot it soon & hopefully I'll have a better version out.

Dee Sharpe

Re: [Syllable-developer] Ordered control of loading (was: linking magic with drivers)

[<dem...@ne...>]

 Well, slightly unrelated.? I was thinking of adding the AGP driver under the PCI driver, then adding DRM as a busmanager under the AGP driver.

Dee Sharpe


 


 

-----Original Message-----
From: dem...@ne...
To: syl...@li...
Sent: Sat, 12 Jul 2008 10:26 am
Subject: Re: [Syllable-developer] linking magic with drivers











 Sorry, that was a question unrelated to the topic.? I was just too lazy to change the subject!? It's 10:25am here & I just woke up a couple of hours ago; not running on full steam yet! :)



Dee Sharpe





 





 



-----Original Message-----

From: Kristian Van Der Vliet <va...@li...>

To: syl...@li...

Sent: Sat, 12 Jul 2008 10:11 am

Subject: Re: [Syllable-developer] linking magic with drivers













On Sat, 2008-07-12 at 11:00 -0400, dem...@ne... wrote:

> Didn't you tell me that if I list a driver in menu.lst then it'll be

> loaded early?



Yes but that doesn't mean you can bind to the symbols exported from that

driver. The RTLD has to fix up any undefined references when it loads

the driver, and it doesn't know how to do that across different drivers,

only from the driver to the kernel.



-- 

Vanders

http://www.syllable.org







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Re: [Syllable-developer] linking magic with drivers

[<dem...@ne...>]

 Sorry, that was a question unrelated to the topic.? I was just too lazy to change the subject!? It's 10:25am here & I just woke up a couple of hours ago; not running on full steam yet! :)

Dee Sharpe


 


 

-----Original Message-----
From: Kristian Van Der Vliet <va...@li...>
To: syl...@li...
Sent: Sat, 12 Jul 2008 10:11 am
Subject: Re: [Syllable-developer] linking magic with drivers










On Sat, 2008-07-12 at 11:00 -0400, dem...@ne... wrote:
> Didn't you tell me that if I list a driver in menu.lst then it'll be
> loaded early?

Yes but that doesn't mean you can bind to the symbols exported from that
driver. The RTLD has to fix up any undefined references when it loads
the driver, and it doesn't know how to do that across different drivers,
only from the driver to the kernel.

-- 
Vanders
http://www.syllable.org



-------------------------------------------------------------------------
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and boredom. Vote Now at http://www.sourceforge.net/community/cca08
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Re: [Syllable-developer] linking magic with drivers

[<dem...@ne...>]

 I really don't want to, but it looks like the only viable way to port this over is to have a drm pseudo busmanager.? The drm-enabled video drivers would call this, the same way that the current ones call the PCI busmanager.? The main problem is that each drm video driver links in with the main drm object.? The drm object keeps track of basic state info & is the main point of reference when device operations are requested.? This had an added benefit when there are multiple videocards in the system, because both video drivers link with the drm driver; allowing the drm object to effectively manage both devices.? The AGP drivers were in a similiar situation, however, they were all compiled together into one object.? It's not preferable to link all of the video drivers into one, nor is it preferable to give each video driver it's own built in drm object (since that defeats the point by not allowing multiple cards to share state). And without modifications (that I have no idea of how to do) our loader doesn't support dynamically linking drivers together.? The downside to the busmanager approach is that it would be overkill for something that should be done on the end of the driver.? While looking at how the *nixen drm interfaces with the video drivers, I discovered that (with the exception of the state info) all it really adds is the same stuff that our drivers have; i.e. ioctl control, bus access, & all of the basic driver interaction functions.? Though, the thought of a bus that manages traffic between other busses is kind of intriqueing.

Dee Sharpe


 


 

-----Original Message-----
From: Kristian Van Der Vliet <va...@li...>
To: syl...@li...
Sent: Sat, 12 Jul 2008 6:34 am
Subject: Re: [Syllable-developer] linking magic with drivers










On Fri, 2008-07-11 at 22:18 -0400, dem...@ne... wrote:
> Is it possible to link one driver against another driver in the same
> way that all drivers are linked against the kernel?  So that driver A
> is really just a loaded module in kernel space & driver B can use
> driver A's functions the same way it would use kernel functions? This
> would really be helpful, because multiple drivers could treat driver A
> like a shared library.  In effect, driver A would be more of a kernel
> extension.  I know that the BSD's do this & Linux does this, but I'm
> kinda sketchy on how this could be done in Syllable.

In theory it's possible, as drivers are ELF shared objects and the ELF
loader could handle them like any other DSO with dependencies. In
practise the code for loading kernel ELF objects is slightly different
to the code for loading standard ELF DSOs so I don't believe this will
work, sadly. The ELF loader/RTLD *could* be expanded to do this, though.

-- 
Vanders
http://www.syllable.org



-------------------------------------------------------------------------
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Studies have shown that voting for your favorite open source project,
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Re: [Syllable-developer] linking magic with drivers

[Kristian V. D. V. <va...@li...>]

On Sat, 2008-07-12 at 11:00 -0400, dem...@ne... wrote:
> Didn't you tell me that if I list a driver in menu.lst then it'll be
> loaded early?

Yes but that doesn't mean you can bind to the symbols exported from that
driver. The RTLD has to fix up any undefined references when it loads
the driver, and it doesn't know how to do that across different drivers,
only from the driver to the kernel.

-- 
Vanders
http://www.syllable.org

Re: [Syllable-developer] linking magic with drivers

[<dem...@ne...>]

 Didn't you tell me that if I list a driver in menu.lst then it'll be loaded early?

Dee Sharpe



 

-----Original Message-----
From: Kristian Van Der Vliet <va...@li...>
To: syl...@li...
Sent: Sat, 12 Jul 2008 6:34 am
Subject: Re: [Syllable-developer] linking magic with drivers










On Fri, 2008-07-11 at 22:18 -0400, dem...@ne... wrote:
> Is it possible to link one driver against another driver in the same
> way that all drivers are linked against the kernel?  So that driver A
> is really just a loaded module in kernel space & driver B can use
> driver A's functions the same way it would use kernel functions? This
> would really be helpful, because multiple drivers could treat driver A
> like a shared library.  In effect, driver A would be more of a kernel
> extension.  I know that the BSD's do this & Linux does this, but I'm
> kinda sketchy on how this could be done in Syllable.

In theory it's possible, as drivers are ELF shared objects and the ELF
loader could handle them like any other DSO with dependencies. In
practise the code for loading kernel ELF objects is slightly different
to the code for loading standard ELF DSOs so I don't believe this will
work, sadly. The ELF loader/RTLD *could* be expanded to do this, though.

-- 
Vanders
http://www.syllable.org



-------------------------------------------------------------------------
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Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
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Re: [Syllable-developer] linking magic with drivers

[Kristian V. D. V. <va...@li...>]

On Fri, 2008-07-11 at 22:18 -0400, dem...@ne... wrote:
> Is it possible to link one driver against another driver in the same
> way that all drivers are linked against the kernel?  So that driver A
> is really just a loaded module in kernel space & driver B can use
> driver A's functions the same way it would use kernel functions? This
> would really be helpful, because multiple drivers could treat driver A
> like a shared library.  In effect, driver A would be more of a kernel
> extension.  I know that the BSD's do this & Linux does this, but I'm
> kinda sketchy on how this could be done in Syllable.

In theory it's possible, as drivers are ELF shared objects and the ELF
loader could handle them like any other DSO with dependencies. In
practise the code for loading kernel ELF objects is slightly different
to the code for loading standard ELF DSOs so I don't believe this will
work, sadly. The ELF loader/RTLD *could* be expanded to do this, though.

-- 
Vanders
http://www.syllable.org

[Syllable-developer] linking magic with drivers

[<dem...@ne...>]

Is it possible to link one driver against another driver in the same way that all drivers are linked against the kernel?? So that driver A is really just a loaded module in kernel space & driver B can use driver A's functions the same way it would use kernel functions? This would really be helpful, because multiple drivers could treat driver A like a shared library.? In effect, driver A would be more of a kernel extension.? I know that the BSD's do this & Linux does this, but I'm kinda sketchy on how this could be done in Syllable.

Dee Sharpe

Re: [Syllable-developer] Wait queues

[<dem...@ne...>]

 For now, I'll just have to believe that it's enough to used the basic semaphores in the way you described to me.? If it doesn't work out, then I'll have to revisit that decision in the future.

Dee Sharpe


 


 

-----Original Message-----
From: Kristian Van Der Vliet <va...@li...>
To: syl...@li...
Sent: Fri, 11 Jul 2008 5:53 pm
Subject: Re: [Syllable-developer] Wait queues










On Fri, 2008-07-11 at 18:04 -0400, dem...@ne... wrote:
> I was considering doing a full port of the wait queue system, but that
> would take up way too much time.  One thing of importance is that the
> Linux wait queue is basically a structure containing a spinlock & a
> list.  So, it shouldn't be an issue to spin up our own system based on
> that concept.  I just don't want to spend tons of time on it because I
> don't want it to become a project in & of itself.

A waiting semaphore is internally implemented using a wait-queue, which
is why sleeping on a semaphore works. I think the main difference with
Linux wait-queues is that you can have multiple waiters on a queue who
can also remove themselves (you can only sleep on a semaphore). If
that's not enough, you could try wrapping & exposing the existing
semaphore wait queue implementation to allow drivers to create and
manage their own queues.

-- 
Vanders
http://www.syllable.org



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