eric6/Toolbox/Startup.py

Sun, 02 Feb 2020 11:04:32 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sun, 02 Feb 2020 11:04:32 +0100
changeset 7380
c99320e859ca
parent 7360
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child 7461
1f239d5f89b8
permissions
-rw-r--r--

Fixed an issue related to showing the application name in the menu bar of Gnome desktop under Wayland.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2002 - 2020 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
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11 import os
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12 import sys
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13
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14 from PyQt5.QtCore import QTranslator, QLocale, QLibraryInfo, QDir
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15 from PyQt5.QtWidgets import QApplication
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16
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17 from E5Gui.E5Application import E5Application
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18
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19 import Globals
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20
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21 import UI.PixmapCache
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22
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23 from eric6config import getConfig
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24
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25 application = None
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26
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27
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28 def usage(appinfo, optlen=12):
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29 """
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30 Module function to show the usage information.
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31
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32 @param appinfo dictionary describing the application
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33 @param optlen length of the field for the commandline option (integer)
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34 """
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35 options = [
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36 ("--version", "show the program's version number and exit"),
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37 ("-h, --help", "show this help message and exit")
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38 ]
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39 options.extend(appinfo["options"])
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40
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41 print("""\n"""
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42 """Usage: {bin} [OPTIONS] {arg}\n"""
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43 """\n"""
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44 """{name} - {description}\n"""
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45 """\n"""
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46 """Options:""".format(**appinfo))
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47 for opt in options:
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48 print(" {0} {1}".format(opt[0].ljust(optlen), opt[1]))
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49 sys.exit(0)
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50
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51
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52 def version(appinfo):
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53 """
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54 Module function to show the version information.
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55
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56 @param appinfo dictionary describing the application
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57 """
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58 print("""\n"""
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59 """{name} {version}\n"""
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60 """\n"""
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61 """{description}\n"""
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62 """\n"""
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63 """Copyright (c) 2002 - 2020 Detlev Offenbach"""
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64 """ <detlev@die-offenbachs.de>\n"""
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65 """This is free software; see LICENSE.GPL3 for copying"""
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66 """ conditions.\n"""
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67 """There is NO warranty; not even for MERCHANTABILITY or FITNESS"""
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68 """ FOR A\n"""
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69 """PARTICULAR PURPOSE.""".format(**appinfo))
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70 sys.exit(0)
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71
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72
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73 def handleArgs(argv, appinfo):
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74 """
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75 Module function to handle the always present commandline options.
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76
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77 @param argv list of commandline parameters (list of strings)
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78 @param appinfo dictionary describing the application
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79 @return index of the '--' option (integer). This is used to tell
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80 the application, that all additional options don't belong to
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81 the application.
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82 """
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83 ddindex = 30000 # arbitrarily large number
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84 args = {
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85 "--version": version,
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86 "--help": usage,
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87 "-h": usage
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88 }
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89 if '--' in argv:
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90 ddindex = argv.index("--")
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91 for a in args:
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92 if a in argv and argv.index(a) < ddindex:
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93 args[a](appinfo)
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94 return ddindex
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95
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96
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97 def loadTranslatorForLocale(dirs, tn):
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98 """
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99 Module function to find and load a specific translation.
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100
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101 @param dirs Searchpath for the translations. (list of strings)
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102 @param tn The translation to be loaded. (string)
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103 @return Tuple of a status flag and the loaded translator
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104 (int, QTranslator)
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105 """
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106 trans = QTranslator(None)
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107 for directory in dirs:
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108 loaded = trans.load(tn, directory)
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109 if loaded:
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110 return (trans, True)
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111
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112 print("Warning: translation file '" + tn + "'could not be loaded.")
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113 print("Using default.")
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114 return (None, False)
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115
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116
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117 def initializeResourceSearchPath():
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118 """
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119 Module function to initialize the default mime source factory.
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120 """
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121 import Preferences
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122
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123 defaultIconPaths = [
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124 os.path.join(getConfig('ericIconDir'), "default"),
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125 os.path.join(getConfig('ericIconDir'), "default", "languages"),
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126 ]
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127 iconPaths = Preferences.getIcons("Path")
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128 for iconPath in iconPaths:
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129 if iconPath:
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130 UI.PixmapCache.addSearchPath(iconPath)
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131 for defaultIconPath in defaultIconPaths:
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132 if defaultIconPath not in iconPaths:
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133 UI.PixmapCache.addSearchPath(defaultIconPath)
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134
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135
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136 def setLibraryPaths():
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137 """
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138 Module function to set the Qt library paths correctly for windows systems.
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139 """
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140 if Globals.isWindowsPlatform():
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141 libPath = os.path.join(Globals.getPyQt5ModulesDirectory(), "plugins")
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142 if os.path.exists(libPath):
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143 libPath = QDir.fromNativeSeparators(libPath)
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144 libraryPaths = QApplication.libraryPaths()
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145 if libPath not in libraryPaths:
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146 libraryPaths.insert(0, libPath)
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147 QApplication.setLibraryPaths(libraryPaths)
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148
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149 # the translator must not be deleted, therefore we save them here
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150 loaded_translators = {}
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151
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152
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153 def loadTranslators(qtTransDir, app, translationFiles=()):
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154 """
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155 Module function to load all required translations.
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156
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157 @param qtTransDir directory of the Qt translations files (string)
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158 @param app reference to the application object (QApplication)
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159 @param translationFiles tuple of additional translations to
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160 be loaded (tuple of strings)
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161 @return the requested locale (string)
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162 """
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163 import Preferences
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164
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165 global loaded_translators
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166
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167 translations = ("qt", "eric6") + translationFiles
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168 loc = Preferences.getUILanguage()
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169 if loc is None:
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170 return ""
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171
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172 if loc == "System":
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173 loc = QLocale.system().name()
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174 if loc != "C":
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175 dirs = [getConfig('ericTranslationsDir'), Globals.getConfigDir()]
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176 if qtTransDir is not None:
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177 dirs.append(qtTransDir)
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178
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179 loca = loc
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180 for tf in ["{0}_{1}".format(tr, loc) for tr in translations]:
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181 translator, ok = loadTranslatorForLocale(dirs, tf)
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182 loaded_translators[tf] = translator
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183 if ok:
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184 app.installTranslator(translator)
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185 else:
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186 if tf.startswith("eric6"):
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187 loca = None
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188 loc = loca
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189 else:
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190 loc = None
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191 return loc
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192
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193
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194 def simpleAppStartup(argv, appinfo, mwFactory, quitOnLastWindowClosed=True,
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195 app=None, raiseIt=True, installErrorHandler=False):
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196 """
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197 Module function to start up an application that doesn't need a specialized
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198 start up.
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199
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200 This function is used by all of eric6's helper programs.
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201
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202 @param argv list of commandline parameters (list of strings)
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203 @param appinfo dictionary describing the application
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204 @param mwFactory factory function generating the main widget. This
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205 function must accept the following parameter.
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206 <dl>
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207 <dt>argv</dt>
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208 <dd>list of commandline parameters (list of strings)</dd>
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209 </dl>
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210 @keyparam quitOnLastWindowClosed flag indicating to quit the application,
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211 if the last window was closed (boolean)
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212 @keyparam app reference to the application object (QApplication or None)
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213 @keyparam raiseIt flag indicating to raise the generated application
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214 window (boolean)
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215 @keyparam installErrorHandler flag indicating to install an error
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216 handler dialog (boolean)
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217 @return exit result (integer)
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218 """
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219 global application
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220
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221 if "__PYVENV_LAUNCHER__" in os.environ:
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222 del os.environ["__PYVENV_LAUNCHER__"]
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223
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224 handleArgs(argv, appinfo)
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225 if app is None:
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226 # set the library paths for plugins
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227 setLibraryPaths()
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228 app = E5Application(argv)
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229 application = app
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230 app.setQuitOnLastWindowClosed(quitOnLastWindowClosed)
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231
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232 # the following code depends upon a valid application object
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233 import Preferences
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234
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235 initializeResourceSearchPath()
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236 QApplication.setWindowIcon(UI.PixmapCache.getIcon("eric.png"))
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237
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238 qtTransDir = Preferences.getQtTranslationsDir()
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239 if not qtTransDir:
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240 qtTransDir = QLibraryInfo.location(QLibraryInfo.TranslationsPath)
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241 loadTranslators(qtTransDir, app, ("qscintilla",))
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242 # qscintilla needed for web browser
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243
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244 w = mwFactory(argv)
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245 if w is None:
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246 return 100
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247
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248 if quitOnLastWindowClosed:
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249 app.lastWindowClosed.connect(app.quit)
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250 w.show()
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251 if raiseIt:
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252 w.raise_()
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253
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254 if installErrorHandler:
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255 # generate a graphical error handler
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256 from E5Gui import E5ErrorMessage
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257 eMsg = E5ErrorMessage.qtHandler()
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258 eMsg.setMinimumSize(600, 400)
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259
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260 return app.exec_()
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261
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262 #
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263 # eflag: noqa = M801

eric ide

mercurial