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List: openjdk-openjfx-dev
Subject: Re: Drag Done Screen Coordinates
From: Andy Goryachev <andy.goryachev () oracle ! com>
Date: 2023-09-29 16:16:29
Message-ID: DM5PR1001MB217278656B622A428FFAC8F9E5C0A () DM5PR1001MB2172 ! namprd10 ! prod ! outlook ! com
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I had the same problem with my docking framework [0], which was initially i=
mplemented using DnD. There were other problems which could not be solved =
at the time, so I had to switch to a more low-level implementation using fl=
oating stages and event handlers.
-andy
[0] https://github.com/andy-goryachev/FxDock
From: openjfx-dev <openjfx-dev-retn@openjdk.org> on behalf of Dirk Lemmerma=
nn <dlemmermann@gmail.com>
Date: Friday, September 29, 2023 at 08:47
To: openjfx-dev <openjfx-dev@openjdk.org>
Subject: Drag Done Screen Coordinates
Hi there,
our application uses drag and drop to move an item out of a stage and onto =
the desktop. We then want to show a new stage showing the item. For this we=
need the screen coordinates when the drag and drop is =84done=93. However,=
those coordinates are always 0 / 0. I found this bug report [0] mentioning=
it and the conclusion / the analysis was, that it was sufficient that the =
=84dragDropped=93 event already contains the coordinates. I think this is w=
rong. The problem is that the =84dropped=93 event gets called on the node w=
here the drop happens, and not on the node where the drag operation started=
. However, when dropping on the desktop there is no JavaFX node that could =
possibly receive the =84dragDropped=93 event. Correct me if I am wrong.
Our application is using a docking framework and it is really pushing the D=
nD support. Docking elements can be dragged and dropped within the docking =
pane, from one docking pane to another, from one stage to another stage, an=
d finally from one stage to the desktop. Everything is working except for t=
he drag to the desktop.
Dirk
[0] https://bugs.openjdk.org/browse/JDK-8094700
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed \
SS16"">I had the same problem with my docking framework [0], which was initially \
implemented using DnD. There were other problems which could not be solved at \
the time, so I had to switch to a more low-level implementation using floating \
stages and event handlers.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Iosevka Fixed \
SS16""><o:p> </o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Iosevka Fixed \
SS16"">-andy<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Iosevka Fixed \
SS16""><o:p> </o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Iosevka Fixed SS16"">[0] <a \
href="https://github.com/andy-goryachev/FxDock">https://github.com/andy-goryachev/FxDock</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Iosevka Fixed \
SS16""><o:p> </o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Iosevka Fixed \
SS16""><o:p> </o:p></span></p> <p class="MsoNormal"><span \
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span \
style="font-size:12.0pt;color:black">From: </span></b><span \
style="font-size:12.0pt;color:black">openjfx-dev <openjfx-dev-retn@openjdk.org> \
on behalf of Dirk Lemmermann <dlemmermann@gmail.com><br> <b>Date: </b>Friday, \
September 29, 2023 at 08:47<br> <b>To: </b>openjfx-dev \
<openjfx-dev@openjdk.org><br> <b>Subject: </b>Drag Done Screen \
Coordinates<o:p></o:p></span></p> </div>
<p class="MsoNormal"><span style="font-size:11.0pt">Hi there,<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">our application uses drag and \
drop to move an item out of a stage and onto the desktop. We then want to show a new \
stage showing the item. For this we need the screen coordinates when the drag and \
drop is „done“. However, those coordinates are always 0 / 0. I found this bug report \
[0] mentioning it and the conclusion / the analysis was, that it was sufficient that \
the „dragDropped“ event already contains the coordinates. I think this is wrong. The \
problem is that the „dropped“ event gets called on the node where the drop happens, \
and not on the node where the drag operation started. However, when dropping on the \
desktop there is no JavaFX node that could possibly receive the „dragDropped“ event. \
Correct me if I am wrong.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Our application is using a \
docking framework and it is really pushing the DnD support. Docking elements can be \
dragged and dropped within the docking pane, from one docking pane to another, from \
one stage to another stage, and finally from one stage to the desktop. Everything is \
working except for the drag to the desktop.<o:p></o:p></span></p> </div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Dirk<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">[0] <a \
href="https://bugs.openjdk.org/browse/JDK-8094700">https://bugs.openjdk.org/browse/JDK-8094700</a><o:p></o:p></span></p>
</div>
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