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GRADIENT handling

 
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JRoza
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PostPosted: Mon Apr 12, 2004 12:35 am    Post subject: GRADIENT handling Reply with quote
Hi,

I'm wrestling with a GRADIENT problem I seem unable to find the solution for.
I have a dialog which contains a GRADIENT element.
Setting the initial colors in the DIALOG ADD goes fine, but when I later try to change the colors of the GRADIENT element it only changes one of the two colors. The VDS help file is not very helpful on this item so maybe one of you know how to tackle this corectly.
I used:

DIALOG SET,GradientExample,%%GradientColor1,%%GradientColor2

And no matter what I try only the first color gets changed, the second keeps its old color settings.

Hope someone has some bright ideas!

Thanks

Jan
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vtol
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PostPosted: Mon Apr 12, 2004 3:44 am    Post subject: Reply with quote
Check this Example out and see if it helps..

Code:
DIALOG CREATE,test,-1,0,400,175
%%GradientColor1 = green
%%GradientColor2 = purple
DIALOG ADD,GRADIENT,GradientExample,0,0,400,175,%%GradientColor1,%%GradientColor2,,bottomTOtop
DIALOG ADD,LINE,LINE1,5,5,390,135
DIALOG ADD,LIST,box1,15,11,378,115
DIALOG ADD,BUTTON,cancel,148,285,43,19,Exit,,

DIALOG SHOW

DIALOG SET,box1,Hello","@FILL(4,,L) double click here"..."@CR()Gradients are cool!

:EVLOOP 
 WAIT EVENT 
 GOTO @EVENT()

:cancelBUTTON
:close
exit


Goodluck Smile
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Serge
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PostPosted: Mon Apr 12, 2004 8:13 am    Post subject: Reply with quote
i suspect that you can only change one colour with dialog set once you have created it....someone else can perhaps confirm this

what you can do is create additional gradients with the new colour settings on top of the existing one

for example,

Code:

%i = 0
%i = @succ(%i)
dialog add, gradient, gradient%i,.....


serge
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vtol
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PostPosted: Mon Apr 12, 2004 9:35 am    Post subject: Reply with quote
Nice Serge Smile

Heres another example of more than 1 gradient (mixed) with RESIZE..

Code:
DIALOG CREATE,test,-1,0,400,175,resizable

  DIALOG ADD,LINE,LINE1,5,5,390,135
DIALOG ADD, GRADIENT,cool,-70,0,589,410,red,blue,,topTObottom
DIALOG ADD, GRADIENT,cool2,342,0,589,350,blue,red,,topTObottom
  DIALOG ADD,LIST,box1,15,11,,,,,
  DIALOG ADD,BUTTON,cancel,148,285,43,19,Exit,,
  DIALOG SHOW

:EVLOOP
  WAIT EVENT
  GOTO @EVENT()

:RESIZE
DIALOG SETPOS,cool,-70,0,@dlgpos(,w),@sum(@dlgpos(,h),40)
DIALOG SETPOS,cool2,@fsub(@dlgpos(,h),50),0,@dlgpos(,w),189
dialog setpos,cancel,@diff(@dlgpos(,h),27),@diff(@dlgpos(,w),115)
dialog setpos,line1,5,5,@diff(@dlgpos(,w),10),@diff(@dlgpos(,h),40)
dialog setpos,box1,15,11,@diff(@dlgpos(,w),22),@diff(@dlgpos(,h),60)
goto evloop

:cancelBUTTON
:close
  exit


Or you could delete the Resize stuff pritty easy.. Cool
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JRoza
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PostPosted: Mon Apr 12, 2004 4:01 pm    Post subject: GRADIENT handling Reply with quote
Thanks Vtol, Serge,

I think Serge's workaround might be the solution.
The DIALOG SET simple is not capable of handling gradients correctly so instead of doing a DIALOG SET I will do as Serge suggests and create a second (and 3d, 4th, ......) gradient over the original one at exactly the same location. Not a very nice solution, but one has to survive Laughing
Still the dialog is only active for a short time since it's a settings screen which will only be opened occasionally in the application.

Maybe Commercial Research Ltd could make a better working solution in the next release of VDS. It definitely looks like a shortcoming/bug.
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vdsalchemist
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PostPosted: Mon Apr 12, 2004 4:07 pm    Post subject: Re: GRADIENT handling Reply with quote
JRoza wrote:
Thanks Vtol, Serge,

I think Serge's workaround might be the solution.
The DIALOG SET simple is not capable of handling gradients correctly so instead of doing a DIALOG SET I will do as Serge suggests and create a second (and 3d, 4th, ......) gradient over the original one at exactly the same location. Not a very nice solution, but one has to survive Laughing
Still the dialog is only active for a short time since it's a settings screen which will only be opened occasionally in the application.

Maybe Commercial Research Ltd could make a better working solution in the next release of VDS. It definitely looks like a shortcoming/bug.


Shortcomming maybe but this is not a bug. Most elements for a VDS dialog have static colors and are not allowed to change. You are usually forced to make duplicates of the items. Now I do have another solution. My Gadget.dll has the ability to place Gradients on the VDS dialog and change their colors on the fly. You can get a copy of this DLL from the link in the signiture of this post.
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Serge
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PostPosted: Mon Apr 12, 2004 5:04 pm    Post subject: Reply with quote
jroza,

it's actually a very handy work around...one that i have used very effectively in my skins program available from vdsworld

as mindpower has said, this is not a bug...many things require a work around when programming simply because of the way things are...not because there are bugs Smile

serge
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FreezingFire
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PostPosted: Mon Apr 12, 2004 9:16 pm    Post subject: Reply with quote
You might also look at the vdsgui.dll, this might have something to help
you. Smile
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JRoza
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PostPosted: Mon Apr 12, 2004 10:27 pm    Post subject: GRADIENT handling Reply with quote
Serge,

You are right, in practice your solution works very well, so I'll stick to it.
And I will look into Gadget and VdsGUI as well although with Serge's solution my problem is solved so there's no real need (yet) for the extra dll's.

Thanks guys!
Very Happy
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