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On Friday 08 November 2002 15:38, you wrote:
>
> I agree that it shouldn't be the only way to go. I would definitely
> prefer to have a function that I can call that would write to disk. The
> source code reveals, however, that a sync() call is only done in the
> destructor.
I've never had a problem with lost settings, so I guess the writeEntry
method does what it needs to. I've attached the complete guiconfig.py
class.
> In fact, I have almost exactly what you mentioned. I have
> a class that wraps it and provides some convenience functions for me. I
> added in some print statements so I *know* that settings.write[Num]Entry
> is getting called with all the correct values.
>
> I guess my main question is, therefore, if I have a reference to a PyQt
> object, in this case QSettings, and at the close of my program the
> destructor never gets called for the PyQt object, then there _must_ be a
> memory leak if any memory whatsoever is allocated by that PyQt object.
>
No, it doesn't have to be a memory leak. If the process ends, the OS
will reclaim all the memory. It can do that without calling destructors,
after all, the process doesn't run anymore.
> Under *nix, has anyone ever seen QSettings actually write to the
> settings file upon a write[Num]Entry? I have monitored the file for
> existence upon a new write[Num]Entry and for changes upon a
> write[Num]Entry and None have ever been made until the object goes out
> of scope.
Maybe I was just lucky, and have the QSettings object call the destructor.
Anyway, it's one part of my application where I've never had problems.
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""" guiconfig.py
Configuration settings for the Kura GUI. Uses the Qt.QSettings class.
"""
import sys, os
from qt import QSettings, QFont
TEXT = 0
NUM = 1
ILVIEW = 0
TREEVIEW = 1
XMLVIEW = 2
FILE="TextQuery"
SQL="dbSql"
tables = [
"lng_project",
"lng_user",
"lng_document",
"lng_doc_doc",
"lng_doc_refs",
"lng_linkcode",
"lng_language",
"lng_reference",
"lng_proj_user",
"lng_proj_lngg",
"lng_recording",
"lng_scan",
"lng_text",
"lng_proj_text",
"lng_stream",
"lng_element",
"lng_lex",
"lng_lex_lex",
"lng_lxlxrelcode",
"lng_text_tag",
"lng_stream_tag",
"lng_element_tag",
"lng_lex_tag",
"lng_tag",
"lng_tagtypecode",
"lng_tagdomain",
"lng_affiliationcode",
"lng_elementtypecode",
"lng_categorycode"]
defaults = {
"textselectorwidth": (NUM, "/kura/lng_text/selector/width", 120),
"interlinearstyle": (NUM, "/kura/export/interlinear", 1),
"backend": (TEXT, "/kura/backend", FILE),
"datastore": (TEXT, "/kura/backend/store", "new.dbobj"),
"filepath": (TEXT, "/kura/backend/filepath", os.environ["HOME"]),
"database" : (TEXT, "/kura/database/database", "andal"),
"hostname" : (TEXT, "/kura/database/hostname", "localhost"),
"password" : (TEXT, "/kura/database/password", ""),
"username" : (TEXT, "/kura/database/username", ""),
"usernr" : (NUM, "/kura/defaults/usernr", 0),
"languagenr" : (NUM, "/kura/defaults/languagenr", 0),
"projectnr" : (NUM, "/kura/defaults/projectnr", 0),
"textfontfamily" : (TEXT, "/kura/defaults/textfont/family", "unifont"),
"textfontsize" : (NUM, "/kura/defaults/textfont/size", 16),
"app_w" : (NUM, "/kura/geometry/app_w", 640),
"app_h" : (NUM, "/kura/defaults/app_h", 640),
"app_x" : (NUM, "/kura/geometry/app_x", 0),
"app_y" : (NUM, "/kura/geometry/app_y", 0),
"widgetfontfamily" : (TEXT, "/kura/defaults/widgetfont/family",
"helvetica"),
"widgetfontsize" : (NUM, "/kura/defaults/widgetfont/size", 16),
"currentTableName" : (TEXT, "/kura/defaults/currentview/tablename",
"lng_lex"),
"useDefaultForSearch" : (NUM, "/kura/defaults/usedefaultforsearch", 0),
"ShowValueHint" : (NUM, "/kura/defaults/showvaluehint", 0),
"streamRegExp" : (TEXT, "/kura/defaults/stream/streamRegExp",
"\. |\.\n|[!?\12]"),
"elementRegExp" : (TEXT, "/kura/defaults/element/elementRegExp",
'=--|[ ,:;"]'),
"morphemeRegExp" : (TEXT, "/kura/defaults/element/morphemeRegExp", "[.]")
}
def __readAndSetEntry(key, pos, default):
d, ok = guiConf.readNumEntry("/kura/dialog/%s/%s" % (key, pos), default)
setattr(guiConf, unicode("%s_%s" % (key, pos)), d)
def initialize():
if sys.platform[:3] == 'win':
guiConf.insertSearchPath(QSettings.Windows, "Kura")
for k, v in defaults.items():
if v[0] == TEXT:
d, ok = guiConf.readEntry(v[1], v[2])
setattr(guiConf, unicode(k), unicode(d))
elif v[0] == NUM:
d, ok = guiConf.readNumEntry(v[1], v[2])
setattr(guiConf, unicode(k), int(d))
if not ok:
guiConf.writeEntry(v[1], v[2])
for t in tables:
__readAndSetEntry(t, 'x', 30)
__readAndSetEntry(t, 'y', 30)
__readAndSetEntry(t, 'w', 300)
__readAndSetEntry(t, 'h', 200)
d, ok = guiConf.readEntry("/kura/listview/%s_width" % t, "")
setattr(guiConf, "%s_width" % t, unicode(d))
d, ok = guiConf.readEntry("/kura/table/%s_table_width" % t, "")
setattr(guiConf, "%s_table_width" % t, unicode(d))
d, ok = guiConf.readEntry("/kura/table/%s_formlist_width" % t, "")
setattr(guiConf, "%s_formlist_width" % t, unicode(d))
guiConf.font = QFont(guiConf.textfontfamily, guiConf.textfontsize)
def writeConfig():
for k, v in defaults.items():
guiConf.writeEntry(v[1], getattr(guiConf, k, v[2]))
for t in tables:
guiConf.writeEntry("/kura/dialog/%s/x" % t, getattr(guiConf, "%s_x" % t, 30))
guiConf.writeEntry("/kura/dialog/%s/y" % t, getattr(guiConf, "%s_y" % t, 30))
guiConf.writeEntry("/kura/dialog/%s/w" % t, getattr(guiConf, "%s_w" % t, 300))
guiConf.writeEntry("/kura/dialog/%s/h" % t, getattr(guiConf, "%s_h" % t, 200))
guiConf.writeEntry("/kura/listview/%s_width" % t, getattr(guiConf, "%s_width" % t, ""))
guiConf.writeEntry("/kura/table/%s_width" % t, getattr(guiConf, "%s_table_width" % t, ""))
guiConf.writeEntry("/kura/formlist/%s_width" % t,
getattr(guiConf, "%s_formlist_width" % t, ""))
guiConf = QSettings()
initialize()
__copyright__="""
copyright : (C) 2002 by Boudewijn Rempt
see copyright notice for license
email : [EMAIL PROTECTED]
"""
__revision__="""$Revision: 1.25 $"""[11:-2]
