eric6/E5Gui/E5Application.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
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parent 7984
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child 8143
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permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2021 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 Class implementing a specialized application class.
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8 """
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9
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10 from PyQt5.QtCore import Qt, QCoreApplication
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11 from PyQt5.QtGui import QPalette
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12 from PyQt5.QtWidgets import QApplication
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13
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14 QCoreApplication.setAttribute(Qt.AA_EnableHighDpiScaling, True)
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15 QCoreApplication.setAttribute(Qt.AA_ShareOpenGLContexts, True)
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16
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17
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18 class E5Application(QApplication):
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19 """
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20 Eric application class with an object registry.
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21 """
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22 def __init__(self, argv):
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23 """
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24 Constructor
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25
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26 @param argv command line arguments
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27 @type list
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28 """
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29 super(E5Application, self).__init__(argv)
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30
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31 QCoreApplication.setAttribute(
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32 Qt.AA_DontCreateNativeWidgetSiblings, True)
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33 QCoreApplication.setAttribute(Qt.AA_UseHighDpiPixmaps, True)
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34
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35 self.__objectRegistry = {}
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36 self.__pluginObjectRegistry = {}
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37
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38 def registerObject(self, name, objectRef):
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39 """
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40 Public method to register an object in the object registry.
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41
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42 @param name name of the object
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43 @type str
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44 @param objectRef reference to the object
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45 @type any
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46 @exception KeyError raised when the given name is already in use
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47 """
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48 if name in self.__objectRegistry:
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49 raise KeyError('Object "{0}" already registered.'.format(name))
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50 else:
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51 self.__objectRegistry[name] = objectRef
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52
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53 def getObject(self, name):
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54 """
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55 Public method to get a reference to a registered object.
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56
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57 @param name name of the object
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58 @type str
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59 @return reference to the registered object
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60 @rtype any
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61 @exception KeyError raised when the given name is not known
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62 """
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63 if name in self.__objectRegistry:
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64 return self.__objectRegistry[name]
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65 else:
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66 raise KeyError('Object "{0}" is not registered.'.format(name))
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67
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68 def registerPluginObject(self, name, objectRef, pluginType=None):
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69 """
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70 Public method to register a plugin object in the object registry.
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71
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72 @param name name of the plugin object
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73 @type str
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74 @param objectRef reference to the plugin object
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75 @type any
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76 @param pluginType type of the plugin object
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77 @type str
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78 @exception KeyError raised when the given name is already in use
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79 """
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80 if name in self.__pluginObjectRegistry:
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81 raise KeyError(
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82 'Pluginobject "{0}" already registered.'.format(name))
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83 else:
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84 self.__pluginObjectRegistry[name] = (objectRef, pluginType)
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85
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86 def unregisterPluginObject(self, name):
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87 """
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88 Public method to unregister a plugin object in the object registry.
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89
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90 @param name name of the plugin object
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91 @type str
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92 """
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93 if name in self.__pluginObjectRegistry:
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94 del self.__pluginObjectRegistry[name]
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95
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96 def getPluginObject(self, name):
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97 """
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98 Public method to get a reference to a registered plugin object.
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99
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100 @param name name of the plugin object
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101 @type str
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102 @return reference to the registered plugin object
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103 @rtype any
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104 @exception KeyError raised when the given name is not known
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105 """
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106 if name in self.__pluginObjectRegistry:
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107 return self.__pluginObjectRegistry[name][0]
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108 else:
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109 raise KeyError(
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110 'Pluginobject "{0}" is not registered.'.format(name))
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111
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112 def getPluginObjects(self):
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113 """
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114 Public method to get a list of (name, reference) pairs of all
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115 registered plugin objects.
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116
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117 @return list of (name, reference) pairs
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118 @rtype list of (str, any)
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119 """
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120 objects = []
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121 for name in self.__pluginObjectRegistry:
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122 objects.append((name, self.__pluginObjectRegistry[name][0]))
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123 return objects
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124
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125 def getPluginObjectType(self, name):
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126 """
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127 Public method to get the type of a registered plugin object.
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128
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129 @param name name of the plugin object
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130 @type str
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131 @return type of the plugin object
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132 @rtype str
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133 @exception KeyError raised when the given name is not known
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134 """
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135 if name in self.__pluginObjectRegistry:
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136 return self.__pluginObjectRegistry[name][1]
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137 else:
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138 raise KeyError(
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139 'Pluginobject "{0}" is not registered.'.format(name))
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140
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141 def usesDarkPalette(self):
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142 """
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143 Public method to check, if the application uses a palette with a dark
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144 background.
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145
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146 @return flag indicating the use of a palette with a dark background
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147 @rtype bool
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148 """
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149 palette = self.palette()
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150 lightness = palette.color(QPalette.Window).lightness()
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151 return lightness <= 128
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152
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153 e5App = QCoreApplication.instance

eric ide

mercurial