On Mon, Aug 17, 2020 at 12:26 PM vince touache <[email protected]> wrote:
> Thanks for the detailed explanation Justin > " it likely has to do with which widget emits and owns the ctrl+c and > ctrl+v keypress event. If you don't define your own, then the event bubbles > up to the first place that it is accepted, which ends up being the > QMainWindow" > I guess this is the part that doesn't make sense to me: with inheritance, > I would expect to have priority if I override a behavior at child level (in > this case, my widget), and therefore, to override the clipboard signal of > the parent (maya main window). As for maya/qt interactions, it makes sense, > it's actually pretty straight forward, I think I was overthinking it, also > because I looked at the doc and saw this x11 thingy (and I don't know what > that is!) and all the differences depending on the OS > Signals don't really have a concept of inheritence or overrides. They are just a list of callbacks that the sender iterates. "events" are the thing that works the way you described, where the event is delivered to the most relevant target. But if the event isn't accepted then it can travel up the chain until some parent accepts it or it falls off. The QShortcut/QAction on your widget acts like the event definition in this case, so your widget actually generates the clipboard event. > > anyway, thanks again for the explanation, much appreciated =] > > Le samedi 15 août 2020 à 17:39:57 UTC-4, [email protected] a écrit : > >> >> >> On Sun, Aug 16, 2020, 8:10 AM vince touache <[email protected]> wrote: >> >>> hey Marcus =] >>> >>> Thanks for the answer! this is what I ended up doing, I access the >>> clipboard using QActions with shortcuts, and it works just fine! I'm still >>> curious to understand better how maya interacts with QApplication exactly, >>> I can't find much resource about. >>> Anyway, problem solved, thanks ^__^ >>> >> >> You could just consider Maya a generic QMainWindow application running a >> QApplication instance that your tool gets to share. There are a couple >> factors about the clipboard and event propagation. The QClipboard docs talk >> about ownership on X11 and where notifications are actually delivered. But >> specifically about the QShortcut approach that Marcus offered, it likely >> has to do with which widget emits and owns the ctrl+c and ctrl+v keypress >> event. If you don't define your own, then the event bubbles up to the first >> place that it is accepted, which ends up being the QMainWindow or any of >> Maya's own child widgets that implemented it as your parent widget (it also >> depends on under which widget you parented your tool). So when you define >> your own shortcut, it means you get to handle the keypress first when you >> are in focus. So you are the owner of the clipboard activity. >> That is my best attempt to explain it in a general non-maya-specific >> context. >> >> >>> Le samedi 15 août 2020 à 02:22:14 UTC-4, Marcus Ottosson a écrit : >>> >>>> Hey Vince :) >>>> >>>> Try assigning a QShortcut to your QApplication instead of leveraging >>>> signals; they'll work better with keyboard and input in general, and they >>>> supersede any native Maya hotkey, at any level of the application. >>>> >>>> 1. On focus (e.g. window activation) create QShortcut >>>> 2. On deactivation delete QShortcut >>>> >>>> >>>> On Fri, 14 Aug 2020 at 21:11, vince touache <[email protected]> wrote: >>>> >>>>> hi guys, >>>>> >>>>> I'm working on a new tool, in which I would like to implement a >>>>> ctl+c/ctl+v to duplicate some (non-serialized) data, e.g. QWidget, >>>>> QGraphicsItem, etc... >>>>> So I'm getting the clipboard from the maya instance using >>>>> QApplication.instance().clipboard(), works fine. >>>>> >>>>> However, when I connect my clipboard.dataChanged signal and try to >>>>> ctrl+c in my widget, it doesn't trigger the method I provided; instead, it >>>>> just behaves like the regular maya clipboard, returning me an error >>>>> because >>>>> nothing is selected in my 3d viewport. Seems that ass soon as the focus in >>>>> on my widget, maya understands it as if the focus was on the viewport >>>>> instead. If I copy anything in maya, or even outside of maya, however, >>>>> that'll trigger my slot... Looks like I'm missing some sort of >>>>> "acceptClipboardEvent" in my widget... >>>>> >>>>> Any idea what I'm missing here? >>>>> >>>>> Thank you >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Python Programming for Autodesk Maya" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/python_inside_maya/d3fdc10c-9f54-4b76-aea0-9365b27f4c16n%40googlegroups.com >>>>> <https://groups.google.com/d/msgid/python_inside_maya/d3fdc10c-9f54-4b76-aea0-9365b27f4c16n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Python Programming for Autodesk Maya" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> >> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/2969d71c-3263-4efb-b916-5f0cef844cf1n%40googlegroups.com >>> <https://groups.google.com/d/msgid/python_inside_maya/2969d71c-3263-4efb-b916-5f0cef844cf1n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "Python Programming for Autodesk Maya" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/python_inside_maya/b45f8a55-287c-441d-b4a8-5c8f81bb1f4en%40googlegroups.com > <https://groups.google.com/d/msgid/python_inside_maya/b45f8a55-287c-441d-b4a8-5c8f81bb1f4en%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. 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