Re: [PyQt] Custom QSqlRelationalDelagate: how to change text?
Simone Zaccarin ha scritto: My only problem is that I construct the UI via QtDesigner. Is there a way to overwrite the table added via Designer without being a PyQt4 expert? Sorry, I misunderstood the message... :) The QSqlRelationalTableModel is added by code... :) Simone Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Custom QSqlRelationalDelagate: how to change text?
Mark Summerfield ha scritto: On 2008-04-11, Simone Zaccarin wrote: I'm trying to create a custom QSqlRelationalDelegate. In the database, the date field is in text form '-MM-dd'. I have to show that string in a QSqlTable in the form 'dd-MM-'. If that's the only change you want to make, you could try what might be a simpler approach, such as subclassing QRelationalTableModel and reimplementing the data() method. For every column except the date just pass the work to the base class, and for your date column do something like: dateString = index.model().data(index).toString() return return QDate.fromString(dateString, -MM-dd).toString(dd/MM/) Thanks, Mark! :D This is the final version: def data(self, index, role): if index.column() == 1 and role == Qt.DisplayRole: try: dateString = QSqlRelationalTableModel.\ data(self, index, role).toString() date = QDate.fromString(dateString, (-MM-dd).toString(dd/MM/) return QVariant(date) except ValueError: return QSqlRelationalTableModel.data(self, index, role) else: return QSqlRelationalTableModel.data(self, index, role) I have to get the string value with the QSqlRelationalTableModel.data method because otherwise I obtain a recursion without end. Thanks a lot, Simone Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Python(x,y), Python/Qt for Scientists
Dear all, The scientists among you may be interested in Python(x,y), a new scientific-oriented Python distribution. This Python/Eclipse/PyQt distribution is freely available as a one-click Windows installer (a release for GNU/Linux with similar features will follow soon): http://www.pythonxy.com Please do not hesitate to forward this announcement... (I am very sorry if you have already received this e-mail through python-list mailing list) Thanks a lots, PR -- P. Raybaut Python(x,y) http://www.pythonxy.com ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Small error in PyKDE4 tutorial for KAction (4th program)
The kactionui.rc file given in the fourth example KAction in the PyKDE4 tutorial uses a ampersand for the text string of the file menu. As is a special character in XML it needs to be encoded as amp; which the author maybe already did, but then forgot to encode the amp; again to amp;amp; Christoph ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] kdecore.KProcess.Communication enum not OR-able
Hi,
The KDE docs say that you can OR the values of the
kdecore.KProcess.Communication enum when start()ing a KProcess.[1]
However that seems not to be possible:
from kdecore import *
p=KProcess()
p.setExecutable('cat')
True
p.start(KProcess.NotifyOnExit, KProcess.Stdin | KProcess.Stdout)
Traceback (most recent call last):
File stdin, line 1, in module
TypeError: argument 2 of KProcess.start() has an invalid type
type(KProcess.Stdin | KProcess.Stdout)
type 'int'
type(KProcess.Stdin)
class 'kdecore.Communication'
So I can only use the predefined values of the Communication enum (All,
AllOuput etc.). Is this a bug and is there a workaround to start a KProcess()
and only communicate with stdout and stdin and not stderr?
[1]http://api.kde.org/3.5-api/kdelibs-apidocs/kdecore/html/classKProcess.html#31e69eb366082bb93bbdc31e6e281019
TIA,
w best regards,
Wilbert Berendsen
--
http://www.wilbertberendsen.nl/
You must be the change you wish to see in the world.
-- Mahatma Gandhi
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Re: [PyQt] PyQt and image processing
On Sat, 12 Apr 2008 02:16:58 -0300 Laura X [EMAIL PROTECTED] wrote: Dear PyQt experts, I am choosing a GUI toolkit for developing an application (cross-platform) and PyQt seems to be simpler/more-intuitive for programming than others. My application will have some basic image processing (transformations, filtering, pattern recognition (e.g., with convolution), etc., but nothing complex) and some drawing/painting on image stuff (I am also interested in playing an AVI movie and transform each frame in single image inside my application). Pardon my ignorance but searching on the internet I was unable to find examples of applications or descriptions of these functionalities in PyQt. I saw that PyQt has some nice built in functions for more basic image processing but nothing on filtering and pattern recognition (e.g., with convolution). It would be OK if I could use PIL or OpenCV for these stuff but it seems the PIL integration in PyQt is somewhat limited or at least the image conversion is too slow and there is nothing on OpenCV. So, are there PyQt applications/examples on image processing? Using PIL or OpenCV? Is it possible to load an AVI file and process the data in PyQt? Of course I understand that if there aren't good app's this does not mean it is not possible to develop, but I want to learn with the experience from others. http://effbot.python-hosting.com/file/pil/PIL/ImageQt.py shows how to convert a PIL image to a QImage using a Python string to exchange the data. It is also very easy to convert the data in a QImage to a Python string. For instance image = QImage(256, 256, QImage.Format_ARGB32) bytes = image.bits().asstring(image.numBytes()) len(bytes) 262144 # == 4*256*256 I suppose that it is easy to convert from a Python string to a PIL image. The penalty of using a Python string instead of copying directly by means of a Python extension written in C or C++ is that the data is copied twice instead of once. It depends on the resources required by your image processing if that is significant or not. It looks that OpenCV has much more image processing capabilities than PIL. A bit of googling (search for numpy and OpenCV) shows that OpenCV contains a file adaptors.py which allows to convert between OpenCV/IPL images, PIL images and numpy arrays. All those conversions use Python strings as an intermediate format. ( http://opencvlibrary.cvs.sourceforge.net/opencvlibrary/opencv/interfaces/swig/python/adaptors.py?view=markup ) Anyhow, if you need PIL or OpenCV with another GUI toolkit, you have to convert to and from the image format of the other toolkit. I think that http://pymedia.org/ lets you convert AVI (and other) movie frames to strings. Regards -- Gerard ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] kdecore.KProcess.Communication enum not OR-able
I forgot to mention the version of PyKDE: PyKDE 3.16.0 PyQT 3.17.4 KDE 3.5.8 thx, Wilbert Berendsen -- http://www.wilbertberendsen.nl/ You must be the change you wish to see in the world. -- Mahatma Gandhi ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Goods news about the menu text missing in PyKDE apps with Oxygen bug
On Donnerstag, 10. April 2008, Simon Edwards wrote: Hello all, Some people here might have crossed paths with the menu text missing in PyKDE apps with Oxygen bug. Basically menu labels are not rendered when a PyKDE4 application is used with the Oxygen widget style. After quite a lot of hair-pulling work over the last few days I've figured out what the problem is. First, a solution. Put the following lines in your PyKDE4/__init__.py file in your Python installation's site-packages directory. (typically /lib/python2.5/site-packages/PyKDE4/__init__.py). import sys, dl sys.setdlopenflags(dl.RTLD_NOW|dl.RTLD_GLOBAL) Python seems to be broken on openSUSE 10.3 64-bit. It doesn't contain the dl.so library. Any help is appreciated. Regards, Detlev -- Detlev Offenbach [EMAIL PROTECTED] ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] kdecore.KProcess.Communication enum not OR-able
On Saturday 12 April 2008 06:04, Wilbert Berendsen wrote:
Hi,
The KDE docs say that you can OR the values of the
kdecore.KProcess.Communication enum when start()ing a KProcess.[1]
However that seems not to be possible:
from kdecore import *
p=KProcess()
p.setExecutable('cat')
True
p.start(KProcess.NotifyOnExit, KProcess.Stdin | KProcess.Stdout)
Traceback (most recent call last):
File stdin, line 1, in module
TypeError: argument 2 of KProcess.start() has an invalid type
type(KProcess.Stdin | KProcess.Stdout)
type 'int'
type(KProcess.Stdin)
class 'kdecore.Communication'
So I can only use the predefined values of the Communication enum (All,
AllOuput etc.). Is this a bug and is there a workaround to start a
KProcess() and only communicate with stdout and stdin and not stderr?
It appears that sip is doing strict checking for the KProcess.Communication
type, and KProcess.Stdin | KProcess.Stdout is not defined in that enum type.
Jim
[1]http://api.kde.org/3.5-api/kdelibs-apidocs/kdecore/html/classKProcess.ht
ml#31e69eb366082bb93bbdc31e6e281019
TIA,
w best regards,
Wilbert Berendsen
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Re: [PyQt] kdecore.KProcess.Communication enum not OR-able
On Saturday 12 April 2008 06:04, Wilbert Berendsen wrote:
Hi,
The KDE docs say that you can OR the values of the
kdecore.KProcess.Communication enum when start()ing a KProcess.[1]
However that seems not to be possible:
from kdecore import *
p=KProcess()
p.setExecutable('cat')
True
p.start(KProcess.NotifyOnExit, KProcess.Stdin | KProcess.Stdout)
Phil suggests that this:
p.start(KProcess.NotifyOnExit, KProcess.Communication (KProcess.Stdin |
KProcess.Stdout))
should work - I haven't tried it.
A couple of other notes: 1. This enum isn't available in KDE4 and 2. A lot of
the enums in KDE4/PyKDE4 (and Qt4) will require similar strict type-checking
(everything using QFlags).
Jim
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Re: [PyQt] kdecore.KProcess.Communication enum not OR-able
Op zaterdag 12 april 2008, schreef Jim Bublitz: Phil suggests that this: p.start(KProcess.NotifyOnExit, KProcess.Communication (KProcess.Stdin | KProcess.Stdout)) Thanks, it works! I tried to do that, but tried kdecore.Communication instead of KProcess.Communication should work - I haven't tried it. A couple of other notes: 1. This enum isn't available in KDE4 and 2. A lot of the enums in KDE4/PyKDE4 (and Qt4) will require similar strict type-checking (everything using QFlags). Thanks for the information and explanation. w best regards, Wilbert Berendsen -- http://www.wilbertberendsen.nl/ You must be the change you wish to see in the world. -- Mahatma Gandhi ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[partially solved] Re: [PyQt] KProcess setUsePty not there...
Op donderdag 3 april 2008, schreef Jim Bublitz: On Wednesday 02 April 2008 08:00, Wilbert Berendsen wrote: Hi, I want to run a program that insists on reading from a terminal using KProcess (from within PyKDE), but it seems KProcess::setUsePty() does not exist: Python 2.5.1 (r251:54863, Mar 26 2008, 22:37:08) [GCC 4.1.2 (Gentoo 4.1.2 p1.0.2)] on linux2 Type help, copyright, credits or license for more information. from kdecore import * p=KProcess() p.setUsePty(3,False) It's an error in not providing a #define for a conditional in the h file when generating PyKDE. Is this a bug in KDE, in PyKDE or in Gentoo's compile setup? You can fix it in sip/kdecore/kprocess.sip by changing this (near line 193): %If ( KDE_3_2_0 - KDE_3_4_0 ) void setUsePty (KProcess::Communication, bool); KPty*pty () const; %End to this: %If ( KDE_3_2_0 - ) void setUsePty (KProcess::Communication, bool); KPty*pty () const; %End and then rebuild with python configure.py -lkdecore make su -cmake install I did that and yes, now setUsePty works. Thanks! A remaining question, as I can't ask the users of my LilyKDE module to recompile PyKDE: does setUsePty work in mainstream distributions like Ubuntu? Thanks, Wilbert Berendsen -- http://www.wilbertberendsen.nl/ You must be the change you wish to see in the world. -- Mahatma Gandhi ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Goods news about the menu text missing in PyKDE apps with Oxygen bug
Detlev Offenbach wrote: On Donnerstag, 10. April 2008, Simon Edwards wrote: Hello all, Some people here might have crossed paths with the menu text missing in PyKDE apps with Oxygen bug. Basically menu labels are not rendered when a PyKDE4 application is used with the Oxygen widget style. After quite a lot of hair-pulling work over the last few days I've figured out what the problem is. First, a solution. Put the following lines in your PyKDE4/__init__.py file in your Python installation's site-packages directory. (typically /lib/python2.5/site-packages/PyKDE4/__init__.py). import sys, dl sys.setdlopenflags(dl.RTLD_NOW|dl.RTLD_GLOBAL) Python seems to be broken on openSUSE 10.3 64-bit. It doesn't contain the dl.so library. Any help is appreciated. Looking at the dl docs I see: Note: This module will not work unless sizeof(int) == sizeof(long) == sizeof(char *) If this is not the case, SystemError will be raised on import. That explains why it is not there for 64bit. Docs for sys.setdlopenflags(): setdlopenflags( n) Set the flags used by the interpreter for dlopen() calls, such as when the interpreter loads extension modules. Among other things, this will enable a lazy resolving of symbols when importing a module, if called as sys.setdlopenflags(0). To share symbols across extension modules, call as sys.setdlopenflags(dl.RTLD_NOW | dl.RTLD_GLOBAL). Symbolic names for the flag modules can be either found in the dl module, or in the DLFCN module. If DLFCN is not available, it can be generated from /usr/include/dlfcn.h using the h2py script. Availability: Unix. New in version 2.2. Try this: import sys,DLFCN sys.setdlopenflags(DLFCN.RTLD_NOW|DLFCN.RTLD_GLOBAL) cheers, -- Simon Edwards | KDE-NL, Guidance tools, Guarddog Firewall [EMAIL PROTECTED] | http://www.simonzone.com/software/ Nijmegen, The Netherlands | ZooTV? You made the right choice. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Error when compiling pyqt on mac
Hey guys, I don't know why is not compiling my PyQT for mac.. I have the Qt4, SIP, etc.. the configure is everything ok.. I specify the qmake and it works fine.. I'm using the configure like this: python configure.py --confirm-license --qmake=/opt/qt4/bin/qmake then I do the make.. but then after compile a lot of stuff.. it returns an error: QGLFramebufferObject::QGLFramebufferObject(QSize const, unsigned int), referenced from: sipQGLFramebufferObject::sipQGLFramebufferObject(QSize const, unsigned int)in sipQtOpenGLQGLFramebufferObject.o ld: symbol(s) not found collect2: ld returned 1 exit status make[1]: *** [QtOpenGL.so] Error 1 make: *** [all] Error 2 Anyone can help me?? I really need this for today.. Thanks Felipe Ferreri Tonello [EMAIL PROTECTED] http://felipetonello.com ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Error when compiling pyqt on mac
On Saturday 12 April 2008, Felipe Ferreri Tonello wrote: Hey guys, I don't know why is not compiling my PyQT for mac.. I have the Qt4, SIP, etc.. What versions? the configure is everything ok.. I specify the qmake and it works fine.. I'm using the configure like this: python configure.py --confirm-license --qmake=/opt/qt4/bin/qmake then I do the make.. but then after compile a lot of stuff.. it returns an error: QGLFramebufferObject::QGLFramebufferObject(QSize const, unsigned int), referenced from: sipQGLFramebufferObject::sipQGLFramebufferObject(QSize const, unsigned int)in sipQtOpenGLQGLFramebufferObject.o ld: symbol(s) not found collect2: ld returned 1 exit status make[1]: *** [QtOpenGL.so] Error 1 make: *** [all] Error 2 Anyone can help me?? I really need this for today.. Then perhaps you should check the mailing list archives. Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Selection of MDI Child and Properties
So I've been trying to alter the mdi.py example packaged with PyQt and allow the contents of the child windows to be altered using the python interpreter. I've been successful in adding a python shell to the main user interface in a way similar to OpenAlea but really have no clue how to access the current window as a variable. For example is it possible to type a command in the python interpreter that would allow text to be added directly to the window that has the current focus? Something like: child1.setText(foo bar) As I did not write the python interpreter add-on I wonder if the threading is such that this is not possible. Does anyone have a solution or an idea how to make this happen? Do I need to create some global variables that get reset each time I change the focus or can they exist for each child window individual--the latter would be ideal. I can post some the code but it is U-G-L-Y upon request. Any help would be greatly appreciated. Cheers, Brian __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
