Re: [B2-devel] Tex-Edit Plus copy/paste problem in SS and B2 MacOSX

[Ronald P. R. <ron...@xs...>]

Tested the TESyncScrap extension in 9.0.4 in the older SheepShaver  
build and in todays build with the fix by Alexei.

The extension does not change copy and paste behaviour in either build  
(with the most serious problems fixed in the last build as I described  
earlier today) but it adds a problem with SimpleText. With the  
extension installed, copying in SimpleText causes a system crash and  
subsequent SheepShaver crash, thus preventing the only way one can  
copy from within SheepShaver and paste in MacOSX.

Ronald.


Op 18 okt 2009, om 17:58 heeft Alexei Svitkine het volgende geschreven:

> Interesting. The other issue I was seeing (which is partly addressed  
> in my last commit) is the fact that SheepShaver would clear the  
> (system) clipboard on every call to PutScrap - which didn't work if  
> the App did something like ZeroScrap(); PutScrap(...); ...;  
> PutScrap(...); to include multiple data types on the clipboard.
>
> The logical solution is to patch the ZeroScrap() trap in the ROM in  
> the same way that both GetScrap() and PutScrap() get patched and  
> only clear the system clipboard when the app calls ZeroScrap(). I  
> tried to do this, but it does not seem to be working (ZeroScrap()  
> isn't being called). I'm wondering if that trap is bypassed by  
> applications that use newer Mac APIs.
>
> On the subject of your change, if it indeed fixes some apps, would  
> there be a way to add your code to SheepShaver itself?
>
> -Alexei
>
> On Sun, Oct 18, 2009 at 11:40 AM, Joshua Juran <jj...@gm...>  
> wrote:
> On Oct 18, 2009, at 6:50 AM, Ronald P. Regensburg wrote:
>
> > I built SS MacOSX from current CVS (Intel only and I forgot to  
> reverse
> > the SDL-audio patch).
> >
> > Clearly improved (tested with AppleWorks, Tex-Edit Plus and  
> SimpleText
> > in MacOS9):
> > - Copying and pasting of styled text between different applications
> > within MacOS9 in SheepShaver works (when copied from SimpleText,
> > styles are lost)
> > - Copying and pasting of styled text from MacOSX to MacOS9 in
> > SheepShaver works (with anomalies when pasted in SimpleText)
> > - Copying and pasting from MacOS9 in SheepShaver to MacOSX works  
> only
> > when copied from a SimpleText document and with styles lost.
>
> One of the issues you and others may have run into is the latency
> occurring between use of the TextEdit scrap and synchronization with
> the desk scrap, i.e. the clipboard.  Prior to Carbon, developers were
> instructed to synchronize the two scraps on layer switch -- when an
> application became or ceased to be frontmost.  The problem with this
> approach is that it doesn't play well with screen-in-a-window
> arrangements where switching to another app in OS X doesn't cause an
> OS 9 layer switch and consequently gets stale clipboard data.
>
> I've written a system extension called TESyncScrap that patches TECut
> () and TECopy() to flush the TE scrap and TEPaste() to update it.  I
> invite you to try it out and see if it's useful.  The source code is
> also available.[1]
>
> TESyncScrap
> http://jjuran.dyndns.org/~jjuran/experimental/TESyncScrap.mbin
>
> TESyncScrap.cc
> <http://github.com/jjuran/metamage_1/blob/
> bd25287ac1551371da0fcf4fd9815b5d14e707db/pedestal/Hacks/TESyncScrap/
> TESyncScrap.cc>
>
> You'll need a MacBinary decoder.  There are several in the
> 'experimental' directory.
>
> Josh
>
> [1] The location may move as things get reorganized, but it will
> remain on github.
>
>
>
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