[guiserver-0.4] button question & bug

[newdep]

Hi Lutz,



How do I change the "PRESSED or TOGGLE" color on a button?

Its currently always the color from the look-and-feel default. (it seems)





small remark ->



Toggle-button is unable to handle "" for an empty button text whereas

button does... for toggle-button the text is always "..." when using "".







Bug ->



There is a bug in toggle-button... the code below

shows me sometimed garbage in the text when using "" instead of " ".

That is together with the gs:set-size... odd...





execute this code, and then without the gs:set-font..

On linux i see garbage as text..



sometimes this hapens and sometimes not?? odd to

reproduce...







(gs:init)

(gs:set-look-and-feel "javax.swing.plaf.metal.MetalLookAndFeel")

(gs:frame 'F1 200 200 500 500 "test")

(gs:set-grid-layout 'F1 1 1 1 1 )





(gs:panel 'BP)

(gs:set-background 'BP 0 0 0)



(dotimes (x leds)

 (set 'b (sym (append "B" (string x))))

  (gs:toggle-button b 'nix "" true)

   (gs:set-font b "Sans Serif" "1" )

    (gs:set-background b 0 0 0)

    (gs:set-foreground b 1 1 1 )

     (gs:set-size b 70 70)

      (gs:add-to 'BP b))





(gs:add-to 'F1 'BP)

(gs:set-visible 'F1 true)













Norman.

[newdep]

The Toggle-button Text bug is a string int mixup!



when using font size "1" instead of 1 its going wrong...





also the pressed-state color probably cant be changed when using the JAVA look-and-feels...



For linux you can though change the MOTIF look and feel colors from the Motif config file on Linux....!



For the GTK Metal etc.. it wont work probably... i think...

[Lutz]

how do I change the "PRESSED or TOGGLE" color on a button?

Its currently always the color from the look-and-feel default. (it seems)

Yes, look-and-feel deafults seem always to overwrite the toggle-button color, nothing we can do :-( But you could try to set an icon on a toggle-botton using gs:set-icon and gs:set-pressed-icon. Or you could use image buttons and keep track of a toggle state yourself.

Toggle-button is unable to handle "" for an empty button text whereas

button does... for toggle-button the text is always "..." when using "".

As mentioned yesterday for set-text in gs:frame, empty strings cannot be used (not to be fixed soon) use empty spaces inside the string when doing gs:set-text or specifying text in general. Do not use ever empty strings or text in widgets use " " a space embedded in quotes instead.

For linux you can though change the MOTIF look and feel colors from the Motif config file on Linux....!

There should be a 'properties' file somewhere in your Java installation where you might be able to change these things.



Lutz

[Lutz]

To allow empty strings "" in the GU server interface the behavior of the newLISP function base64-enc has to be changed. Currently base64-enc returns "" when fed "" it should return "====" instead, which will be decoded as "" by base64-dec. This change will not happen until 9.1.9.



Lutz