Utilities/Startup.py

Mon, 26 Dec 2011 19:31:22 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Mon, 26 Dec 2011 19:31:22 +0100
changeset 1509
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parent 945
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child 1775
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permissions
-rw-r--r--

Updated copyright for 2012.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2002 - 2012 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing some startup helper funcions
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8 """
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9
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10 import os
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11 import sys
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13 from PyQt4.QtCore import QTranslator, QTextCodec, QLocale, QLibraryInfo
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14 from PyQt4.QtGui import QApplication
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15
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16 from E5Gui.E5Application import E5Application
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17
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18 import Preferences
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19 import Utilities
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20 from UI.Info import Version
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21
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22 import UI.PixmapCache
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23
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24 from eric5config import getConfig
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25
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26
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27 def makeAppInfo(argv, name, arg, description, options=[]):
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28 """
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29 Module function to generate a dictionary describing the application.
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30
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31 @param argv list of commandline parameters (list of strings)
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32 @param name name of the application (string)
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33 @param arg commandline arguments (string)
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34 @param description text describing the application (string)
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35 @param options list of additional commandline options
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36 (list of tuples of two strings (commandline option, option description)).
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37 The options --version, --help and -h are always present and must not
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38 be repeated in this list.
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39 @return dictionary describing the application
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40 """
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41 return {
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42 "bin": argv[0],
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43 "arg": arg,
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44 "name": name,
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45 "description": description,
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46 "version": Version,
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47 "options": options
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48 }
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49
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50
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51 def usage(appinfo, optlen=12):
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52 """
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53 Module function to show the usage information.
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54
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55 @param appinfo dictionary describing the application
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56 @param optlen length of the field for the commandline option (integer)
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57 """
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58 options = [\
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59 ("--version", "show the program's version number and exit"),
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60 ("-h, --help", "show this help message and exit")
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61 ]
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62 options.extend(appinfo["options"])
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63
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64 print("""
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65 Usage: {bin} [OPTIONS] {arg}
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66
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67 {name} - {description}
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68
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69 Options:""".format(**appinfo))
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70 for opt in options:
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71 print(" {0} {1}".format(opt[0].ljust(optlen), opt[1]))
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72 sys.exit(0)
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73
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74
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75 def version(appinfo):
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76 """
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77 Module function to show the version information.
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78
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79 @param appinfo dictionary describing the application
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80 """
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81 print("""
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82 {name} {version}
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83
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84 {description}
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85
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86 Copyright (c) 2002 - 2012 Detlev Offenbach <detlev@die-offenbachs.de>
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87 This is free software; see LICENSE.GPL3 for copying conditions.
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88 There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
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89 PARTICULAR PURPOSE.""".format(**appinfo))
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90 sys.exit(0)
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91
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92
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93 def handleArgs(argv, appinfo):
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94 """
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95 Module function to handle the always present commandline options.
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96
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97 @param argv list of commandline parameters (list of strings)
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98 @param appinfo dictionary describing the application
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99 @return index of the '--' option (integer). This is used to tell
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100 the application, that all additional options don't belong to
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101 the application.
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102 """
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103 ddindex = 30000 # arbitrarily large number
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104 args = {
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105 "--version": version,
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106 "--help": usage,
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107 "-h": usage
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108 }
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109 if '--' in argv:
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110 ddindex = argv.index("--")
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111 for a in args:
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112 if a in argv and argv.index(a) < ddindex:
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113 args[a](appinfo)
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114 return ddindex
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115
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116
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117 def loadTranslatorForLocale(dirs, tn):
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118 """
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119 Module function to find and load a specific translation.
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120
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121 @param dirs Searchpath for the translations. (list of strings)
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122 @param tn The translation to be loaded. (string)
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123 @return Tuple of a status flag and the loaded translator. (int, QTranslator)
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124 """
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125 trans = QTranslator(None)
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126 for dir in dirs:
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127 loaded = trans.load(tn, dir)
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128 if loaded:
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129 return (trans, True)
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130
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131 print("Warning: translation file '" + tn + "'could not be loaded.")
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132 print("Using default.")
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133 return (None, False)
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134
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135
0
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136 def initializeResourceSearchPath():
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137 """
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138 Module function to initialize the default mime source factory.
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139 """
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140 defaultIconPath = os.path.join(getConfig('ericIconDir'), "default")
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141 iconPaths = Preferences.getIcons("Path")
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142 for iconPath in iconPaths:
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143 if iconPath:
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144 UI.PixmapCache.addSearchPath(iconPath)
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145 if not defaultIconPath in iconPaths:
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146 UI.PixmapCache.addSearchPath(defaultIconPath)
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147
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148
265
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149 def setLibraryPaths():
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150 """
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151 Module function to set the Qt library paths correctly for windows systems.
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152 """
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153 if Utilities.isWindowsPlatform():
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154 from PyQt4 import pyqtconfig
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155 libPath = os.path.join(pyqtconfig._pkg_config["pyqt_mod_dir"], "plugins")
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156 if os.path.exists(libPath):
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157 libPath = Utilities.fromNativeSeparators(libPath)
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158 libraryPaths = QApplication.libraryPaths()
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159 if libPath not in libraryPaths:
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160 libraryPaths.insert(0, libPath)
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161 QApplication.setLibraryPaths(libraryPaths)
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162
0
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163 # the translator must not be deleted, therefore we save them here
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164 loaded_translators = {}
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165
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166
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167 def loadTranslators(qtTransDir, app, translationFiles=()):
0
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168 """
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169 Module function to load all required translations.
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170
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171 @param qtTransDir directory of the Qt translations files (string)
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172 @param app reference to the application object (QApplication)
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173 @param translationFiles tuple of additional translations to
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174 be loaded (tuple of strings)
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175 @return the requested locale (string)
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176 """
97
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177 global loaded_translators
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178 translations = ("qt", "eric5") + translationFiles
0
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179 loc = Preferences.getUILanguage()
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180 if loc is None:
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181 return
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182
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183 if loc == "System":
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184 loc = QLocale.system().name()
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185 if loc != "C":
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186 dirs = [getConfig('ericTranslationsDir'), Utilities.getConfigDir()]
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187 if qtTransDir is not None:
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188 dirs.append(qtTransDir)
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189
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190 loca = loc
432
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191 for tf in ["{0}_{1}".format(tr, loc) for tr in translations]:
0
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192 translator, ok = loadTranslatorForLocale(dirs, tf)
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193 loaded_translators[tf] = translator
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194 if ok:
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195 app.installTranslator(translator)
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196 else:
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197 if tf.startswith("eric5"):
0
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198 loca = None
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199 loc = loca
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200 else:
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201 loc = None
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202 return loc
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203
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204
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205 def simpleAppStartup(argv, appinfo, mwFactory, quitOnLastWindowClosed=True,
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206 app=None):
0
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207 """
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208 Module function to start up an application that doesn't need a specialized start up.
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209
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210 This function is used by all of eric5's helper programs.
0
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211
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212 @param argv list of commandline parameters (list of strings)
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213 @param appinfo dictionary describing the application
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214 @param mwFactory factory function generating the main widget. This
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diff changeset
215 function must accept the following parameter.
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216 <dl>
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217 <dt>argv</dt>
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diff changeset
218 <dd>list of commandline parameters (list of strings)</dd>
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diff changeset
219 </dl>
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220 @keyparam quitOnLastWindowClosed flag indicating to quit the application,
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diff changeset
221 if the last window was closed (boolean)
513
a5329d7867c5 Fixed the QLocalSocket issue.
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diff changeset
222 @keyparam app reference to the application object (QApplication or None)
0
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223 """
97
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parents: 55
diff changeset
224 handleArgs(argv, appinfo)
513
a5329d7867c5 Fixed the QLocalSocket issue.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 500
diff changeset
225 if app is None:
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parents: 500
diff changeset
226 app = E5Application(argv)
0
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diff changeset
227 app.setQuitOnLastWindowClosed(quitOnLastWindowClosed)
263
2b328d503567 Added code to overcome an issue on windows platforms locating Qt plugins, if PyQt was installed via the installer.
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parents: 107
diff changeset
228
265
5805c2e1415b Corrected and optimized the code for setting the Qt library paths.
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diff changeset
229 setLibraryPaths()
0
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diff changeset
230 initializeResourceSearchPath()
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diff changeset
231 QApplication.setWindowIcon(UI.PixmapCache.getIcon("eric.png"))
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diff changeset
232
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diff changeset
233 qt4TransDir = Preferences.getQt4TranslationsDir()
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parents:
diff changeset
234 if not qt4TransDir:
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diff changeset
235 qt4TransDir = QLibraryInfo.location(QLibraryInfo.TranslationsPath)
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diff changeset
236 loadTranslators(qt4TransDir, app)
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diff changeset
237
564
b3d966393ba9 Did some code cleanup.
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parents: 513
diff changeset
238 QTextCodec.setCodecForCStrings(
0
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diff changeset
239 QTextCodec.codecForName(Preferences.getSystem("StringEncoding"))
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parents:
diff changeset
240 )
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parents:
diff changeset
241
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diff changeset
242 w = mwFactory(argv)
701
fc587a1c2f8b Added an option to configure the icon of the tray starter application.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 564
diff changeset
243 if quitOnLastWindowClosed:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 564
diff changeset
244 app.lastWindowClosed.connect(app.quit)
0
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diff changeset
245 w.show()
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parents:
diff changeset
246
701
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diff changeset
247 return app.exec_()

eric ide

mercurial