Re: [PyQt] Designer source
On 07.03.12 16:14:18, JPolk wrote: ...'cause it would make it easier for me to merge Designer with Maya ;-) Write Maya in C++ ;P Andreas ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Designer source
On 08.03.12 09:35:51, Andreas Pakulat wrote: On 07.03.12 16:14:18, JPolk wrote: ...'cause it would make it easier for me to merge Designer with Maya ;-) Write Maya in C++ ;P Hmm, on a more serious note, you won't get around writing C++. AFAIK the public API of the QtDesigner library (and hence also the PyQt module) does not include the necessary functions to actually create a designer yourself. One needs to use one or two private headers from QtDesigner for the necessary functions. You could of course simply wrap that private API in a simple class and expose that via sip to Python and then do all the rest in Python. Andreas ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] sip: Member objects and GC
On Wed, 07 Mar 2012 20:09:36 +0100, Jonathan Kleinehellefort j...@molb.org wrote: Thanks, I tried it. Now, instead of being destroyed early, the object is never destroyed, which I believe means that it leaks memory. Maybe you created a reference cycle? Even if there is a reference cycle the garbage collector should break it if it is being allowed to run. Any test should explicitly invoke it. Can you provide such a test that demonstrates the problem? Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] New member (Drag and Drop)
Okay, I will narrow the scope of this question for now. I am playing with the draggablewidgets demo in PyQt4. What is the secret to getting different images into that app or how do I create a PNG image that it will load? From: Shoemaker, Ronnie A (N-UNITED SPACE ALLIANCE, LLC) Sent: Wednesday, March 07, 2012 1:52 PM To: 'pyqt@riverbankcomputing.com' Subject: New member Hi. I am a new member of this mailing list. I am writing a GUI in PyQt4 that will use drag and drop of images to put a simulation together. I found one drag and drop example that uses QLabels loaded with png files. I need to be able to draw my own images or at least load other types onto my GUI. I found some .ico files and tried to load them and they didn't work. I even loaded them into MS Paint and saved them as PNG files and they didn't load and gave no error message. Where can I find a tutorial or examples on how to do drag and drop and/or what I need to know about images to do that? I can start with pictures as simple as geometric shapes, rectangle, triangle, etc. I have done lots of googling and info that is either too specific or too general. Thanks, Ron -- ronnie.a.shoema...@lmco.commailto:ronnie.a.shoema...@lmco.com ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Designer source
Am Donnerstag, 8. März 2012, 09:49:41 schrieb Andreas Pakulat: On 08.03.12 09:35:51, Andreas Pakulat wrote: On 07.03.12 16:14:18, JPolk wrote: ...'cause it would make it easier for me to merge Designer with Maya ;-) Write Maya in C++ ;P Hmm, on a more serious note, you won't get around writing C++. AFAIK the public API of the QtDesigner library (and hence also the PyQt module) does not include the necessary functions to actually create a designer yourself. One needs to use one or two private headers from QtDesigner for the necessary functions. You could of course simply wrap that private API in a simple class and expose that via sip to Python and then do all the rest in Python. If somebody would do that and maintain it over time I would be the first to use to integrate Designer into the eric IDE. Regards, Detlev -- Detlev Offenbach det...@die-offenbachs.de ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Designer source
On 08.03.12 19:42:39, Detlev Offenbach wrote: Am Donnerstag, 8. März 2012, 09:49:41 schrieb Andreas Pakulat: On 08.03.12 09:35:51, Andreas Pakulat wrote: On 07.03.12 16:14:18, JPolk wrote: ...'cause it would make it easier for me to merge Designer with Maya ;-) Write Maya in C++ ;P Hmm, on a more serious note, you won't get around writing C++. AFAIK the public API of the QtDesigner library (and hence also the PyQt module) does not include the necessary functions to actually create a designer yourself. One needs to use one or two private headers from QtDesigner for the necessary functions. You could of course simply wrap that private API in a simple class and expose that via sip to Python and then do all the rest in Python. If somebody would do that and maintain it over time I would be the first to use to integrate Designer into the eric IDE. Its not an easy task though, we had something somewhat-working for KDevelop4 in a plugin, but it did require some nasty hacks and workarounds the designer API. Its simply not really meant to be added to arbitrary IDE's, but mainly geared towards the designer standalone app. Note, I'm basing that information on Qt4.5/4.6, i.e. a point in time where QtCreator was still in its early stages. Maybe in more recent Qt versions this got improved to provide better integration for QtCreator. Andreas ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] sip: Member objects and GC
On Thu, 08 Mar 2012 10:03:46 +, Phil Thompson p...@riverbankcomputing.com wrote: Even if there is a reference cycle the garbage collector should break it if it is being allowed to run. Any test should explicitly invoke it. Not sure if this applies here, but I think the Python GC will not call destructors on objects that are part of a reference cycle. So maybe the Python wrappers get collected but not the C++ objects. Can you provide such a test that demonstrates the problem? You can already see it in the original test I put up on my webserver. But I updated it to make it more explicit: http://molb.org/~jk/siptest2.tar.gz The C++ objects have destructors that should print stuff, but that never happens. Another thing: it would be nice if sipKeepReference() would appear in the docs. -- Jonathan ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] sip: Member objects and GC
On Thu, 08 Mar 2012 23:14:49 +0100, Jonathan Kleinehellefort j...@molb.org wrote: On Thu, 08 Mar 2012 10:03:46 +, Phil Thompson p...@riverbankcomputing.com wrote: Even if there is a reference cycle the garbage collector should break it if it is being allowed to run. Any test should explicitly invoke it. Not sure if this applies here, but I think the Python GC will not call destructors on objects that are part of a reference cycle. So maybe the Python wrappers get collected but not the C++ objects. No. The GC won't collect objects with __del__ methods. Can you provide such a test that demonstrates the problem? You can already see it in the original test I put up on my webserver. But I updated it to make it more explicit: http://molb.org/~jk/siptest2.tar.gz The C++ objects have destructors that should print stuff, but that never happens. ...because the GC isn't being run. Import the gc module and run it explicitly. Another thing: it would be nice if sipKeepReference() would appear in the docs. It's not part of the public API. Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] New member (Drag and Drop)
On Thu Mar 8 15:59:20 GMT 2012, Shoemaker, Ronnie A wrote: Okay, I will narrow the scope of this question for now. I am playing with the draggablewidgets demo in PyQt4. What is the secret to getting different images into that app or how do I create a PNG image that it will load? First, make sure that the images can be loaded by PyQt4 by trying to load them into the imageviewer.py example. If that works, modify the draggableicons.qrc file to refer to your new images and run the pyrcc4 tool to create a draggableicons_rc.py file. The pyrcc4 tool basically converts the image data into a textual format that can be stored in that Python module. The example imports the module, causing the images to be registered as resources - the ':/images/boat.png' string you can see in the draggableicons.py example is a reference to the image in a kind of resource file system. You need to update these strings to refer to your images. Good luck! David ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
