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import sys
import logging
from PyQt4.uic import compileUi, loadUi
class Driver(object):
""" This encapsulates access to the pyuic functionality so that it can be
called by code that is Python v2/v3 specific.
"""
LOGGER_NAME = 'PyQt4.uic'
def __init__(self, opts, ui_file):
""" Initialise the object. opts is the parsed options. ui_file is the
name of the .ui file.
"""
if opts.debug:
logger = logging.getLogger(self.LOGGER_NAME)
handler = logging.StreamHandler()
handler.setFormatter(logging.Formatter("%(name)s: %(message)s"))
logger.addHandler(handler)
logger.setLevel(logging.DEBUG)
self._opts = opts
self._ui_file = ui_file
def invoke(self):
""" Invoke the action as specified by the parsed options. Returns 0 if
there was no error.
"""
if self._opts.preview:
return self._preview()
self._generate()
return 0
def _preview(self):
""" Preview the .ui file. Return the exit status to be passed back to
the parent process.
"""
from PyQt4 import QtGui
app = QtGui.QApplication([self._ui_file])
widget = loadUi(self._ui_file)
widget.show()
return app.exec_()
def _generate(self):
""" Generate the Python code. """
if self._opts.output == "-":
pyfile = sys.stdout
else:
pyfile = open(self._opts.output, 'wt')
compileUi(self._ui_file, pyfile, self._opts.execute, self._opts.indent,
self._opts.pyqt3_wrapper)
def on_IOError(self, e):
""" Handle an IOError exception. """
sys.stderr.write("Error: %s: \"%s\"\n" % (e.strerror, e.filename))
def on_SyntaxError(self, e):
""" Handle a SyntaxError exception. """
sys.stderr.write("Error in input file: %s\n" % e)
def on_NoSuchWidgetError(self, e):
""" Handle a NoSuchWidgetError exception. """
if e.args[0].startswith("Q3"):
sys.stderr.write("Error: Q3Support widgets are not supported by PyQt4.\n")
else:
sys.stderr.write(str(e) + "\n")
def on_Exception(self, e):
""" Handle a generic exception. """
if logging.getLogger(self.LOGGER_NAME).level == logging.DEBUG:
import traceback
traceback.print_exception(*sys.exc_info())
else:
from PyQt4 import QtCore
sys.stderr.write("""An unexpected error occurred.
Check that you are using the latest version of PyQt and send an error report to
support@riverbankcomputing.com, including the following information:
* your version of PyQt (%s)
* the UI file that caused this error
* the debug output of pyuic4 (use the -d flag when calling pyuic4)
""" % QtCore.PYQT_VERSION_STR)
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