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Flow Diagramming Components >> Feature Suggestions >> Flow diagramming for QT?
https://mindfusion.eu/Forum/YaBB.pl?num=1561124829 Message started by Kyle Chen on Jun 21st, 2019 at 1:47pm |
Title: Flow diagramming for QT? Post by Kyle Chen on Jun 21st, 2019 at 1:47pm
Hi,
Is that possible you guys make a lib for QT? Or you already have a plan, that will be great! Thanks, Kyle Chen |
Title: Re: Flow diagramming for QT? Post by Slavcho on Jun 24th, 2019 at 7:52am
Hi,
We've looked a few times at it and don't have current plans, but we could probably jump on the WebAssembly bandwagon :) Are you using QT Quick or QT Widgets? You might also try running our JavaScript library from inside a QWebView. Regards, Slavcho MindFusion |
Title: Re: Flow diagramming for QT? Post by Kyle Chen on Jun 26th, 2019 at 6:30pm
Hi Slavcho,
For QT, I'm not sure what I will use now. The target platform could be embedded system (Ubuntu something), mobile phone application and/or desktop. Probably performance will be first to consider, so QWebView+JavaScript could not be the first choice for embedded system. Please keep me updated if you will start a plan for QT. Thanks, Kyle Chen |
Title: Re: Flow diagramming for QT? Post by Slavcho on Jun 27th, 2019 at 8:56am
You'll be probably using QT Quick / QML then. What diagram features from our other supported platforms would you need, in case we decide to start planning? :)
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Title: Re: Flow diagramming for QT? Post by Kyle Chen on Jun 27th, 2019 at 4:15pm Slavcho wrote on Jun 27th, 2019 at 8:56am:
You're right, QT Quick/QML would be better. If possible we expect it similar as desktop as much as possible. Basically we use diagram as a WYSWYG editor(Attached is a sample screen). All the text, barcode, graphic here are diagram nodes. We'll create bitmap for all of them. Some special requirement I can think about for now (based on WinForm version): 1. The most important, the application will run with touch screen which need an easy touch screen operation like easy to move node (maybe hold a node for a while then it turns into moving mode?) 2. Lane needs to be support because the nodes will be split into different lane. 3. Better group/ungroup - once nodes are grouped, the relative position should be always kept same like in Word canvas. Thanks and looking forward to your early planning! Kyle Chen |
Title: Re: Flow diagramming for QT? Post by Slavcho on Sep 30th, 2019 at 6:15pm
We got some proof of concept code running -
https://mindfusion.eu/_beta/QuickTest.zip Code (] import QtQuick 2.12 import QtQuick.Window 2.12 import MindFusion.Diagramming 0.1 Window { visible: true width: 640 height: 480 title: qsTr("Hello World") DiagramView { objectName: "diagramView" } } auto diagramView = object-> findChild<DiagramView*>("diagramView"); if (diagramView) { auto diagram = diagramView->diagram(); auto node1 = QSharedPointer<DiagramNode>::create(); node1->setText("Hello,"); node1->setBounds(QRectF(40, 20, 200, 200)); diagram->items().add(node1); auto node2 = QSharedPointer<DiagramNode>::create(); node2->setText("World!"); node2->setImageLocation( QUrl("qrc:/tajmahal200.png")); node2->setBounds(QRectF(300, 140, 180, 140)); diagram->items().add(node2); QObject::connect( diagram.get(), &Diagram::nodeCreated, [=):
- We'd prefer to use shared pointers for the various references kept between items. Unfortunately shared pointers cannot be used from QML, so you'll need to do the diagram controller code in C++ at this time as shown in example above. We'll probably have to add some parallel APIs to access raw QObject* pointers if you want to manipulate the diagram entirely in QML. - DiagramNode is mostly a data object and rendering is done via a QML component bound to its properties. So we'll probably expose some templating system based on that down the line. - We have no idea how to handle all the kits and platforms supported by Qt; the archive above contains Qt 5.13.1 / Windows / VC2017 64bit build. We guess we'll have to ship binaries on demand for the various combinations. From what we've heard, the Qt company is developing a marketplace to go along with their Qt 6 release, so that might be something they handle if we upload the source code with them. Our developer will play with multi-touch APIs next. Regards, Slavcho |
Title: Re: Flow diagramming for QT? Post by Kyle Chen on Aug 3rd, 2020 at 10:01pm
Hi Slavcho,
Thank you for looking into this. Is that possible for you to make a lib targetting the system on the following cpu board (TQMa6x with revision 0114 - QT 5.6.3 supported) so I can do some test? https://support.tq-group.com/en/arm/tqma6x/linux/ptxdist/overview My coding environment will be a Ubuntu VMvare machine (v18.0.4 with QT 5.6.3 support) running on Windows 10. Controller code in C++ is OK to me. For Node rendering, basically I will need to pass a bitmap to the node. And might need to draw different layer over the bitmap (add a "lock" icon on the corner for an example). Example code will help. Thank you very much, Kyle |
Title: Re: Flow diagramming for QT? Post by Slavcho on Aug 5th, 2020 at 12:22pm
Hi,
Do you mean you are using some special QT kit to compile for that board, or the standard GCC / desktop will do? Regards, Slavcho |
Title: Re: Flow diagramming for QT? Post by Kyle Chen on Aug 10th, 2020 at 1:31pm
Hi Slavcho,
Please hold until I find out what I really want. :D Thanks, Kyle |
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