Re: [MacPerl] Updating a window in MacPerl

["Paul Schaap" <paul.schaap@dingoblue.com.au>]

Arthur,

If you suceed I want the code :-)

What we generally do for progress bar is AppleScript the program
"Progress Bar 1.0.1" which does work very well. Your method is pure
thats why I'd like to see it.

> First, I would like to express my appreciation for MacPerl, which has
> allowed me to accomplish a task I could not have practically succeeded
> at using other tools.
>
> Now for my question: I made an attempt to write a "progress bar" for my
> MacPerl script, but have encountered problems in updating it.
>
> To explain, the progress window is declared with:
>
>  $win     = MacWindow->new( NewCWindow( $winRect, "", 1, floatSideProc, 1));
>  $win->sethook("redraw", \&progress_win);
>
> and the sub progress_win redraws the window's content region, including
> the progress bar.
>
> I attempt to update the window via a periodic call to:
>
> sub progress_break { #MacOS-specific
>      $progress = $INchars / $inputSize;
>         InvalRect( $winRect) if ( defined( $winRect) );
>         WaitNextEvent();
> }
>
> where $winRect is the region corresponding to the progress bar, and
> $progress is a global variable that will determine the length of the
> progress bar.
>
> To round off my explanation, progress_break is called from time to time
> as the script executes, hopefully at more or less regular intervals.
>
> I tested my code, and it works to some extent, in that the window is
> correctly drawn when sub progress_win is called.
>
> I know these details are somewhat sketchy (I haven't mentioned exactly
> what my problem is, I know), but I would appreciate hearing from anyone
> on this list who has some reflections on the basic technique I have used
> here. Is it sound?
>
> Also, has anyone seen similar work posted anywhere? I'd like to compare notes.
>
> And if it is deemed worthwhile, I would like to post my code once I am
> satisfied that it can pass muster.
>
> Art Ogawa
> TeX Consultants
>
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Paul


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