[PyKDE] Using custom components and Qt Designer with QWidgetFactory in PyQt

Phil Thompson phil at riverbankcomputing.co.uk
Thu Nov 4 09:28:26 GMT 2004

> On Wed, Nov 03, 2004 at 11:37:47PM +0100, Sundance wrote:
>> I heard Truls A. Tangstad said:
>> > Maybe a possible solution might be to create a QWidgetFactory
>> > replacement that runtime uses pyuic and execs the result... if
>> > nothing else this allows custom components specified in the Designer
>> > to be created correctly since pyuic uses code from the Comments field
>> > which QWidgetFactory ignores.
>> You know, what would REALLY kick butt would be a way to import .ui files
>> directly.
>> Like:
>> from MyWidgetUIFile import MyWidget
>> That's how the Python bindings for the ORBit CORBA implementation works.
>> You can import IDL files directly. This really, /really/ makes a
>> difference in development cleanliness and flexibility.
>> Anyone has any idea how to do that?
> I'd find having that kind of syntax being too much magic, and I'd
> actually like an indication that the module we import/create isn't
> available as a python-file, but a .ui-file.
> I'd be quite happy with syntax such as this:
> <snippet>
> from uiloader import ModuleFactory
> mymodule = ModuleFactory('/path/to/ui/file/here.ui')
> MyClass = mymodule.MyClass # if you really need the direct name
> my_object = MyClass("some", "happy", "parameters")
> # or if you really just need the class
> mymodule = ModuleFactory('/path/to/ui/file/here.ui').MyClass
> # or if you'd really like a class factory too, for convinience
> from uiloader import ClassFactory
> MyClass = ClassFactory('/path/to/ui/file/here.ui', 'MyClass')
> </snippet>
> Creating an implementation of ModuleFactory and ClassFactory should be
> pretty straightforward as long as they use pyuic, which brings me to
> my most important point: I _really_ want pyuic available as a module
> in the pyqt-library, and not have to run it as a shell program.

Yes, I've been thinking about this for Qt v4. Normally with a new major
release of Qt (v1, v2 etc) I re-implement pyuic based on the new uic. This
time I'm considering re-implementing it in Python which could then be run
from the command line, or imported as a module.


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