[Vm-dev] ExtendedClipboardInterface and ClipboardExtendedPlugin state?

[Juan Vuletich]

On 1/4/2022 3:26 PM, Vanessa Freudenberg wrote:
>   
>
>
> On Tue, Jan 4, 2022 at 8:14 AM Eliot Miranda <eliot.miranda at gmail.com 
> <mailto:eliot.miranda at gmail.com>> wrote:
>
>     Hi Vanessa,
>
>>     On Jan 3, 2022, at 1:03 PM, Vanessa Freudenberg
>>     <vanessa at codefrau.net <mailto:vanessa at codefrau.net>> wrote:
>>
>>     
>>     In the OLPC days this plugin enabled copy/paste of objects,
>>     pictures. and rich text on all platforms (Mac/Win/X11).
>>
>>     E.g. you could copy/paste a morph from one image to another
>>     simply by bringing up its halo, pressing cmd-c, and pressing
>>     cmd-v in the other image. All its scripted behavior (Etoys
>>     scripts) would be transferred with it. If instead you pasted that
>>     morph into a word processor, it would insert a bitmap rendering
>>     of the morph.
>>
>>     Similarly you could copy a picture from a web browser and paste
>>     it directly into Squeak. Or copy syntax-highlighted source code
>>     from Squeak into an email.
>>
>>     I'm not entirely sure how much of the machinery made into Squeak
>>     trunk, but I would guess it's almost all there, might just need
>>     some wiring to hook up properly.
>
>     The basic image classes are there.  But only the Mac vm support
>     machinery made it.  There is no
>     platforms/unix/plugins/ClipboardExtendedPlugin
>     or platforms/win32/plugins/ClipboardExtendedPlugin that I can
>     find.  Where or who can we reach out to to try and locate this code?
>
>
> The unix plugin is in the interpreter sources:
>
> http://squeakvm.org/cgi-bin/viewvc.cgi/squeak/trunk/platforms/unix/plugins/ClipboardExtendedPlugin/sqUnixExtendedClipboard.c?view=markup
>
> with the X11 support code in the display plugin:
>
> http://squeakvm.org/cgi-bin/viewvc.cgi/squeak/trunk/platforms/unix/vm-display-X11/sqUnixX11.c?revision=3796&view=markup#l2465 
> <http://squeakvm.org/cgi-bin/viewvc.cgi/squeak/trunk/platforms/unix/vm-display-X11/sqUnixX11.c?revision=3796&view=markup#l2465>
>
> I don't see the equivalent in win32, possibly I was misremembering 
> that it worked on all three platforms (I only ever use Mac and *nix).
>
> Vanessa

I believe I took related code from Sophie. In Cuis you can copy / paste 
various things between images and external programs as Vanessa says. 
Haven't used it in a long time, though.

The Windows support calls stuff in user32.dll via ffi, i.e. no plugin. 
It doesn't support writing to clipboard. I believe Mac and Linux support 
is more complete.

>>
>>     Vanessa
>>
>>     On Fri, Dec 31, 2021 at 5:07 PM Eliot Miranda
>>     <eliot.miranda at gmail.com <mailto:eliot.miranda at gmail.com>> wrote:
>>
>>         Hi Bernhard,
>>
>>         On Fri, Dec 31, 2021 at 5:27 AM Bernhard Pieber
>>         <bernhard at pieber.com <mailto:bernhard at pieber.com>> wrote:
>>
>>
>>             Hi,
>>
>>             Maybe this question is better asked on the vm-dev list.
>>             Does anyone know the status of the ClipboardExtendedPlugin?
>>
>>             Happy New Year!
>>
>>             Bernhard
>>
>>             > Am 20.12.2021 um 09:38 schrieb Bernhard Pieber
>>             <bernhard at pieber.com <mailto:bernhard at pieber.com>>:
>>             >
>>             > Hi everyone,
>>             >
>>             > I tried to copy a form as PNG to the clipboard like this:
>>             > ExtendedClipboardInterface current
>>             addClipboardDataConvertFormToPNG: self imageForm
>>
>>
>>         With fixes to the plugin ClipboardExtendedPlugin.c generated
>>         C file to declare the interface it uses, and the Makefile to
>>         compile it, I am able to copy and paste the display into
>>         TextEdit on macOS 10.14.  I'll commit fixes to the
>>         opensmalltalk-vm repository, and add the plugin to Squeak
>>         macOS builds.  Thanks for the heads up :-)
>>
>>             >
>>             > This seems not to work correctly. If I paste it to
>>             TextEdit I get the binary data starting with PNG instead
>>             of the image itself. It looks as if the
>>             ClipboardExtendedPlugin is not loaded. The plugin seems
>>             to be in the current VM source
>>             (src/pugins/ClipboardExtendedPlugin), though. I am on
>>             macOS Big Sur 11.6.1.
>>             >
>>             > Should this work? I tried on Squeak 3.4, 4.6 and 5.3 but
>>             the ExtendedClipboardInterface is not loaded in these images.
>>             >
>>             > Cheers,
>>             > Bernhard
>>
>>
>>
>>
>>         -- 
>>         _,,,^..^,,,_
>>         best, Eliot
>>


-- 
Juan Vuletich
www.cuis-smalltalk.org
https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev
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@JuanVuletich

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