<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 30, 2024 at 5:14 PM Andy Goryachev <<a href="mailto:andy.goryachev@oracle.com">andy.goryachev@oracle.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg956694089381023600">
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<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">Excellent development, Johan, thank you!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">I’ve asked a few questions in the ticket
<a href="https://bugs.openjdk.org/browse/JDK-8324941" target="_blank">https://bugs.openjdk.org/browse/JDK-8324941</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">I suppose I should also do it here:<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">- How do you get information on a (virtual) screen?<br>
- How would one control how many virtual screens are there?<br></span></p></div></div></div></blockquote><div><br></div><div>Good questions. This is currently hardcoded in HeadlessApplication.staticScreen_getScreens() but that can be extended to take input via environment variables or System properties.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg956694089381023600"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="m_1770753551720730426WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">
- Would there be any other way of simulating user input apart from Robot?<br></span></p></div></div></div></blockquote><div><br></div><div>Not sure I understand the question. In theory, input with mouse etc would be possible but then that would be sort of a duplication/rewrite of the Robot. I'm missing the usecase for this I guess?</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg956694089381023600"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="m_1770753551720730426WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">
- Is the graphics still accelerated?<br></span></p></div></div></div></blockquote><div><br></div><div>Yes, the headless platform does not influence the prism settings. If will still use the hw acceleration by default, and fall back to sw-rendering if hw fails, or if prism.order is set to explicitly use sw rendering.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg956694089381023600"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="m_1770753551720730426WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">
- Are there any functional gaps between Headless and headful modes (fonts, rendering, etc.)?<br></span></p></div></div></div></blockquote><div><br></div><div>Not as far as I know, as that functionality is not in Glass. </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg956694089381023600"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="m_1770753551720730426WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">
<br>
Most importantly,<br>
- Is there a JEP/tutorial for the new mode?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">Thank you<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16"">-andy<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16""><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Iosevka Fixed SS16""><u></u> <u></u></span></p>
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<p class="MsoNormal" style="margin-bottom:12pt"><b><span style="font-size:12pt;font-family:Aptos,sans-serif;color:black">From:
</span></b><span style="font-size:12pt;font-family:Aptos,sans-serif;color:black">openjfx-dev <<a href="mailto:openjfx-dev-retn@openjdk.org" target="_blank">openjfx-dev-retn@openjdk.org</a>> on behalf of Johan Vos <<a href="mailto:johan.vos@gluonhq.com" target="_blank">johan.vos@gluonhq.com</a>><br>
<b>Date: </b>Tuesday, January 30, 2024 at 03:47<br>
<b>To: </b>openjfx-dev <<a href="mailto:openjfx-dev@openjdk.org" target="_blank">openjfx-dev@openjdk.org</a>><br>
<b>Subject: </b>Headless glass platform<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">Hi,<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">I created a branch in the jfx-sandbox repository for experimenting with a headless glass platform:
<a href="https://github.com/openjdk/jfx-sandbox/tree/johanvos-headless" target="_blank">https://github.com/openjdk/jfx-sandbox/tree/johanvos-headless</a><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">This addresses <a href="https://bugs.openjdk.org/browse/JDK-8324941" target="_blank">https://bugs.openjdk.org/browse/JDK-8324941</a> where I suggest a POC for a Headless platform.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">There are a number of usecases for this, including:<br>
1. applications that require JavaFX rendering without presenting this to a window (and instead send it to a printer for example)<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">2. running tests without requiring a window manager.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">Regarding the second usecase, we already did some basic experiments using a modified version of TestFX where instead of the Monocle Headless subplatform, the POC Headless platform is used.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">By using a first-class Headless glass platform instead of a Monocle subplatform, it should be easier to use by developers.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">The monocle code contains very platform/os specific parts, which often don't make sense outside the target platform. This is very valuable, but it is also a very different usecase than a headless platform
and it requires a much more complex build procedure.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">I added an initial, limited HeadlessRobot to do some basic tests. That code is mainly taken from the existing Monocle implementation, but I want to be careful to avoid anything that is not applicable to the
headless scenarios.<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt">- Johan<u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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