Call for testing: Drag and Drop on Linux

[Thiago Milczarek Sayao]

Did some investigation.

Turns out the current applied gtk3 DND patch works - on the case of scenebuilder the dragview (the window that follows the mouse and shows an image/icon) is getting on the way.

It doesn't block drag destination from getting events on gtk2, but blocks on gtk3.

Tried to fix it without success (for now).

Posted question here:
https://discourse.gnome.org/t/dnd-window-getting-in-the-way-of-dnd-events/1141


________________________________
De: Kevin Rushforth <kevin.rushforth at oracle.com>
Enviado: segunda-feira, 10 de junho de 2019 19:00
Para: Thiago Milczarek Sayao; openjfx-dev at openjdk.java.net
Assunto: Re: Call for testing: Drag and Drop on Linux


> How much time we have until 13 release?

The schedule is here [1].

RDP1 starts July 8 (aka "feature freeze")
RDP2 starts Aug 5

Thanks.

-- Kevin



On 6/10/2019 1:53 PM, Thiago Milczarek Sayao wrote:
> Hi Kevin,
>
> I will file a JBS with an explanation of the changes and why I did them.
>
> I did a lot of testing on DND on the last days and I have noticed that the GTK3 DND fix that got integrated is not working completely with scenebuilder (may affect other apps). The drag is ok, but when the pointer reach the drop zone it's not detecting the mouse movement properly (it seems). I haven't touched the "drop" code on either patches.
>
> In general I trust more the new patch because it has less #ifdefs and it's more straightforward. But I understand your concerns.
>
>   I will look into it (on the patch that got integrated).
>
> How much time we have until 13 release?

Schedule is here [1].

RDP1 starts July 8 (aka "feature freeze")
RDP2 starts Aug 5


-- Kevin

[1]
https://mail.openjdk.java.net/pipermail/openjfx-dev/2019-March/023180.html



>
> Thanks.
>
>
> ________________________________
> De: Kevin Rushforth <kevin.rushforth at oracle.com>
> Enviado: segunda-feira, 10 de junho de 2019 17:39
> Para: Thiago Milczarek Sayao; openjfx-dev at openjdk.java.net
> Assunto: Re: Call for testing: Drag and Drop on Linux
>
> Hi Thiago,
>
> I note that this is a significant change that touches more that just the
> Drag and Drop code, so we will need a broader discussion of your
> proposed enhancement, as we do with any significant change. Go ahead and
> file an Enhancement request so that we have a JBS issue to track this.
> Given where we are in the release cycle and the number of other
> enhancements under review, this is out of scope for JavaFX 13, but could
> be considered for a future release once there is general agreement of
> the approach.
>
> One thing I recommend starting with is a high-level overview of the
> changes. Also, an evaluation of whether (and how) this change might make
> the Glass GTK port easier to maintain going forward would be helpful.
>
> Thanks.
>
> -- Kevin
>
>
> On 6/10/2019 10:15 AM, Thiago Milczarek Sayao wrote:
>> Dear Linux Users,
>>
>> I did some modifications on DND to work better with Linux:
>>
>> https://github.com/javafxports/openjdk-jfx/pull/490
>>
>> Benefits:
>>
>>     *   Works on wayland
>>     *   Works across gtk2 and gtk3 with little code differences
>>     *   Works on scenebuilder (with gtk3 - currently it falls back to gtk2)
>>     *   Will be easier to port to GTK4 when it's default (may take some time).
>>
>> I have tested on Ubuntu 16.04, 18.04 and 19.04.
>>
>> Please, give feedback on the Pull Request.
>>
>> On the source there are two test apps included (tests/manual/dnd).
>>
>> Can be also tested with scenebuilder (which uses drag and drop):
>>
>>     *   Clone de source https://github.com/gluonhq/scenebuilder
>>     *   Build: gradlew build
>>     *   Run:  java --module-path <PATH TO OPENJFX SOURCE>/openjdk-jfx/build/sdk/lib --add-modules javafx.web,javafx.fxml,javafx.swing,javafx.media --add-opens=javafx.fxml/javafx.fxml=ALL-UNNAMED -cp app/build/libs/scenebuilder-11.0.0-SNAPSHOT.jar com.oracle.javafx.scenebuilder.app.SceneBuilderApp
>>
>>
>>
>>