On Sat, Sep 28, 2024 at 12:46 PM Leto Atreides <strunt...@gmail.com> wrote:

> @Justin Israel
> Thank you. That gives me a lot to think about.
>
> How does Maya's native hotkeys work. Are they in fact Qt based? And are
> they done with the eventFilter in C++?
> For example looking at Ctrl + L it's mapped to a different command in
> three different editors.
> It seems all editors are context sensitive? If I add a new hotkey to a
> command under the UV editor, I need the UV editor to be in focus for this
> command to execute.
>

Don't quote me on this, since I haven' developed for Maya in many years now
and don't know what has changed. But I would expect that since Maya is a Qt
app, that its hotkey manager would assign the shortcuts to the target
widget windows, which make them context sensitive.


>
> For my own custom commands, they are obviously not context sensitive as i
> can run them from any window that has focus. If I should have mapped Ctrl +
> L to a custom command, it will override any default context sensitive
> command defined in Maya.
>

The way Qt events work is that they are delivered to the QApplication which
then delivers them to the most targeted widget. If the widget does not
handle the event, it will continue bubbling up the parent object hierarchy
until it is handled or falls off. So if you are trying to fight Maya's
hotkey implementation, then you have to get to the event before Maya's
widgets do. That means installing event filters either on the application
or the widgets. The problem with adding event filters to widgets is that
some get destroyed and recreated, which means your event filter is gone,



> On Saturday, September 28, 2024 at 1:45:46 AM UTC+2 Justin Israel wrote:
>
>>
>>
>> On Sat, Sep 28, 2024, 11:41 AM Leto Atreides <stru...@gmail.com> wrote:
>>
>>> Hi. as there are a few things that bothers me with Maya's hotkeys system.
>>>
>>> I'm curious if I can code up a class in PySide2 to create my own hotkeys
>>> system.
>>> I've read a few threads on here and I've experimented with the
>>> eventFilter before.
>>>
>>> However if I understand it correctly, using eventFilter installed on the
>>> Maya main window is bad as all events will go from C++ to python to C++,
>>> making Maya slower?
>>>
>>
>> Yea don't do that in python. If you are going to do it, write it in C++
>>
>>
>>> I'm not sure that I should use an eventFilter, but I want to be able to
>>> map both key press and key release that works wherever I have my focus in
>>> Maya.
>>> To have it context sensitive could also be nice so I can set up that the
>>> same key sequence calls a function when in the UV-editor and then another
>>> if I have focus in the viewport.
>>>
>>> What do you suggest here?
>>>
>>
>> You would have to catch the events before Maya widgets receive them. If
>> you do it at the application with an event filter, it should be C++ and
>> would have to check every object to see if it is one you want to handle.
>> Otherwise you have to find each Qt widget reference and install an event
>> filter, to make it more context specific.
>>
>>
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