You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
197 lines
7.6 KiB
197 lines
7.6 KiB
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright © 2009- The Spyder Development Team
|
|
# Licensed under the terms of the MIT License
|
|
|
|
"""
|
|
Compatibility functions
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
import sys
|
|
import collections
|
|
|
|
from . import PYQT4
|
|
from .QtWidgets import QFileDialog
|
|
from .py3compat import is_text_string, to_text_string, TEXT_TYPES
|
|
|
|
|
|
# =============================================================================
|
|
# QVariant conversion utilities
|
|
# =============================================================================
|
|
PYQT_API_1 = False
|
|
if PYQT4:
|
|
import sip
|
|
try:
|
|
PYQT_API_1 = sip.getapi('QVariant') == 1 # PyQt API #1
|
|
except AttributeError:
|
|
# PyQt <v4.6
|
|
PYQT_API_1 = True
|
|
|
|
def to_qvariant(pyobj=None):
|
|
"""Convert Python object to QVariant
|
|
This is a transitional function from PyQt API #1 (QVariant exist)
|
|
to PyQt API #2 and Pyside (QVariant does not exist)"""
|
|
if PYQT_API_1:
|
|
# PyQt API #1
|
|
from PyQt4.QtCore import QVariant
|
|
return QVariant(pyobj)
|
|
else:
|
|
# PyQt API #2
|
|
return pyobj
|
|
|
|
def from_qvariant(qobj=None, convfunc=None):
|
|
"""Convert QVariant object to Python object
|
|
This is a transitional function from PyQt API #1 (QVariant exist)
|
|
to PyQt API #2 and Pyside (QVariant does not exist)"""
|
|
if PYQT_API_1:
|
|
# PyQt API #1
|
|
assert isinstance(convfunc, collections.Callable)
|
|
if convfunc in TEXT_TYPES or convfunc is to_text_string:
|
|
return convfunc(qobj.toString())
|
|
elif convfunc is bool:
|
|
return qobj.toBool()
|
|
elif convfunc is int:
|
|
return qobj.toInt()[0]
|
|
elif convfunc is float:
|
|
return qobj.toDouble()[0]
|
|
else:
|
|
return convfunc(qobj)
|
|
else:
|
|
# PyQt API #2
|
|
return qobj
|
|
else:
|
|
def to_qvariant(obj=None): # analysis:ignore
|
|
"""Convert Python object to QVariant
|
|
This is a transitional function from PyQt API#1 (QVariant exist)
|
|
to PyQt API#2 and Pyside (QVariant does not exist)"""
|
|
return obj
|
|
|
|
def from_qvariant(qobj=None, pytype=None): # analysis:ignore
|
|
"""Convert QVariant object to Python object
|
|
This is a transitional function from PyQt API #1 (QVariant exist)
|
|
to PyQt API #2 and Pyside (QVariant does not exist)"""
|
|
return qobj
|
|
|
|
|
|
# =============================================================================
|
|
# Wrappers around QFileDialog static methods
|
|
# =============================================================================
|
|
def getexistingdirectory(parent=None, caption='', basedir='',
|
|
options=QFileDialog.ShowDirsOnly):
|
|
"""Wrapper around QtGui.QFileDialog.getExistingDirectory static method
|
|
Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
|
|
# Calling QFileDialog static method
|
|
if sys.platform == "win32":
|
|
# On Windows platforms: redirect standard outputs
|
|
_temp1, _temp2 = sys.stdout, sys.stderr
|
|
sys.stdout, sys.stderr = None, None
|
|
try:
|
|
result = QFileDialog.getExistingDirectory(parent, caption, basedir,
|
|
options)
|
|
finally:
|
|
if sys.platform == "win32":
|
|
# On Windows platforms: restore standard outputs
|
|
sys.stdout, sys.stderr = _temp1, _temp2
|
|
if not is_text_string(result):
|
|
# PyQt API #1
|
|
result = to_text_string(result)
|
|
return result
|
|
|
|
|
|
def _qfiledialog_wrapper(attr, parent=None, caption='', basedir='',
|
|
filters='', selectedfilter='', options=None):
|
|
if options is None:
|
|
options = QFileDialog.Options(0)
|
|
try:
|
|
# PyQt <v4.6 (API #1)
|
|
from .QtCore import QString
|
|
except ImportError:
|
|
# PySide or PyQt >=v4.6
|
|
QString = None # analysis:ignore
|
|
tuple_returned = True
|
|
try:
|
|
# PyQt >=v4.6
|
|
func = getattr(QFileDialog, attr+'AndFilter')
|
|
except AttributeError:
|
|
# PySide or PyQt <v4.6
|
|
func = getattr(QFileDialog, attr)
|
|
if QString is not None:
|
|
selectedfilter = QString()
|
|
tuple_returned = False
|
|
|
|
# Calling QFileDialog static method
|
|
if sys.platform == "win32":
|
|
# On Windows platforms: redirect standard outputs
|
|
_temp1, _temp2 = sys.stdout, sys.stderr
|
|
sys.stdout, sys.stderr = None, None
|
|
try:
|
|
result = func(parent, caption, basedir,
|
|
filters, selectedfilter, options)
|
|
except TypeError:
|
|
# The selectedfilter option (`initialFilter` in Qt) has only been
|
|
# introduced in Jan. 2010 for PyQt v4.7, that's why we handle here
|
|
# the TypeError exception which will be raised with PyQt v4.6
|
|
# (see Issue 960 for more details)
|
|
result = func(parent, caption, basedir, filters, options)
|
|
finally:
|
|
if sys.platform == "win32":
|
|
# On Windows platforms: restore standard outputs
|
|
sys.stdout, sys.stderr = _temp1, _temp2
|
|
|
|
# Processing output
|
|
if tuple_returned:
|
|
# PySide or PyQt >=v4.6
|
|
output, selectedfilter = result
|
|
else:
|
|
# PyQt <v4.6 (API #1)
|
|
output = result
|
|
if QString is not None:
|
|
# PyQt API #1: conversions needed from QString/QStringList
|
|
selectedfilter = to_text_string(selectedfilter)
|
|
if isinstance(output, QString):
|
|
# Single filename
|
|
output = to_text_string(output)
|
|
else:
|
|
# List of filenames
|
|
output = [to_text_string(fname) for fname in output]
|
|
|
|
# Always returns the tuple (output, selectedfilter)
|
|
return output, selectedfilter
|
|
|
|
|
|
def getopenfilename(parent=None, caption='', basedir='', filters='',
|
|
selectedfilter='', options=None):
|
|
"""Wrapper around QtGui.QFileDialog.getOpenFileName static method
|
|
Returns a tuple (filename, selectedfilter) -- when dialog box is canceled,
|
|
returns a tuple of empty strings
|
|
Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
|
|
return _qfiledialog_wrapper('getOpenFileName', parent=parent,
|
|
caption=caption, basedir=basedir,
|
|
filters=filters, selectedfilter=selectedfilter,
|
|
options=options)
|
|
|
|
|
|
def getopenfilenames(parent=None, caption='', basedir='', filters='',
|
|
selectedfilter='', options=None):
|
|
"""Wrapper around QtGui.QFileDialog.getOpenFileNames static method
|
|
Returns a tuple (filenames, selectedfilter) -- when dialog box is canceled,
|
|
returns a tuple (empty list, empty string)
|
|
Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
|
|
return _qfiledialog_wrapper('getOpenFileNames', parent=parent,
|
|
caption=caption, basedir=basedir,
|
|
filters=filters, selectedfilter=selectedfilter,
|
|
options=options)
|
|
|
|
|
|
def getsavefilename(parent=None, caption='', basedir='', filters='',
|
|
selectedfilter='', options=None):
|
|
"""Wrapper around QtGui.QFileDialog.getSaveFileName static method
|
|
Returns a tuple (filename, selectedfilter) -- when dialog box is canceled,
|
|
returns a tuple of empty strings
|
|
Compatible with PyQt >=v4.4 (API #1 and #2) and PySide >=v1.0"""
|
|
return _qfiledialog_wrapper('getSaveFileName', parent=parent,
|
|
caption=caption, basedir=basedir,
|
|
filters=filters, selectedfilter=selectedfilter,
|
|
options=options)
|