[PyKDE] A few issues with the 20060108 snapshots

[Gerard Vermeulen]

(1) The following example shows two widgets: one with a working box layout and
    one with a broken box layout, while the code is practically identical.

#!/usr/bin/env python

# Demonstrates that PyQt4 breaks QVBoxLayout when it is the QLayout of a
# QWidget which is returned from a function.

import sys
from PyQt4 import QtGui

def make():
    # The QVBoxLayout does not work when resizing.
    broken = QtGui.QFrame()
    broken.setWindowTitle('Broken')
    t1 = QtGui.QTextEdit(broken)
    t2 = QtGui.QTextEdit(broken)
    layout = QtGui.QVBoxLayout(broken)
    layout.addWidget(t1)
    layout.addWidget(t2)
    broken.resize(600, 400)
    broken.show()
    return broken

if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    # The QVBoxLayout works when resizing.
    works = QtGui.QFrame()
    works.setWindowTitle('Works')
    t1 = QtGui.QTextEdit(works)
    t2 = QtGui.QTextEdit(works)
    layout = QtGui.QVBoxLayout(works)
    layout.addWidget(t1)
    layout.addWidget(t2)
    works.resize(600, 400)
    works.show()
    # The QVBoxLayout does not work when resizing.
    broken = make()
    sys.exit(app.exec_())


(2) I may be doing something stupid but I really need to apply the following
    patch to build PyQwt for Qt-4 ( see also 
    http://mats.imk.fraunhofer.de/pipermail/pykde/2005-December/011764.html ):

--- sip-snapshot-20060107/siputils.py.gv        2006-01-08 04:30:40.000000000 +0100
+++ sip-snapshot-20060107/siputils.py   2006-01-08 07:58:51.000000000 +0100
@@ -467,7 +467,13 @@
             if self.config.qt_version >= 0x040000:
                 # This is really just a help for PyQt's configure.py when it is
                 # detecting what Qt modules are available.
-                qtmods = self.config.pyqt_modules[:]
+                qtmods = self.config.pyqt_modules
+                if isinstance(qtmods, list):
+                    # True for PyQt's configure
+                    qtmods = qtmods[:]
+                else:
+                    # True for PyQwt's configure, unless I am really stupid
+                    qtmods = qtmods.split()
                 qtmods.extend(self._qt)

                 for mod in qtmods:
#- end patch -#

    If I do not apply the patch, I get the following exeption:

An internal error occured.  Please report all the output
from the program, including the following traceback, to
pyqwt-users at lists.sourceforge.net
Traceback (most recent call last):
  File "configure.py", line 867, in ?
    main()
  File "configure.py", line 841, in main
    options = check_compiler(configuration, options)
  File "configure.py", line 293, in check_compiler
    if compile_qt_program(name, configuration):
  File "configure.py", line 51, in compile_qt_program
    exe, build = makefile.build_command(name)
  File "/home/packer/usr/lib/python2.4/site-packages/sipconfig.py", line 1545, in build_command
    self.ready()
  File "/home/packer/usr/lib/python2.4/site-packages/sipconfig.py", line 916, in ready
    self.finalise()
  File "/home/packer/usr/lib/python2.4/site-packages/sipconfig.py", line 1630, in finalise
    Makefile.finalise(self)
  File "/home/packer/usr/lib/python2.4/site-packages/sipconfig.py", line 572, in finalise
    qtmods.extend(self._qt)
AttributeError: 'str' object has no attribute 'extend'


The code leading to this exception is:

    makefile = sipconfig.ProgramMakefile(
        configuration, console=True, qt=True, warnings=True)

    makefile.extra_defines.extend(extra_defines)
    makefile.extra_include_dirs.extend(extra_include_dirs)
    makefile.extra_lib_dirs.extend(extra_lib_dirs)
    makefile.extra_libs.extend(extra_libs)

    exe, build = makefile.build_command(name)

Gerard