Mercurial Repositories > eric / file comparison
comparison: src/eric7/EricWidgets/EricApplication.py
src/eric7/EricWidgets/EricApplication.py
- branch
- eric7
- changeset 9209
- b99e7fd55fd3
- parent 8908
- 48f55b2e7fe5
- child 9221
- bf71ee032bb4
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| 9208:3fc8dfeb6ebe | 9209:b99e7fd55fd3 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2009 - 2022 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Class implementing a specialized application class. | |
| 8 """ | |
| 9 | |
| 10 import os | |
| 11 | |
| 12 from PyQt6.QtCore import Qt, QCoreApplication | |
| 13 from PyQt6.QtGui import QColor, QPalette | |
| 14 from PyQt6.QtWidgets import QApplication | |
| 15 | |
| 16 QCoreApplication.setAttribute( | |
| 17 Qt.ApplicationAttribute.AA_ShareOpenGLContexts, True) | |
| 18 | |
| 19 from . import EricMessageBox | |
| 20 | |
| 21 | |
| 22 class EricApplication(QApplication): | |
| 23 """ | |
| 24 Eric application class with an object registry. | |
| 25 """ | |
| 26 PaletteRoleMapping = { | |
| 27 "alternate-base": QPalette.ColorRole.AlternateBase, | |
| 28 "base": QPalette.ColorRole.Base, | |
| 29 "text": QPalette.ColorRole.Text, | |
| 30 "bright-text": QPalette.ColorRole.BrightText, | |
| 31 "placeholder-text": QPalette.ColorRole.PlaceholderText, | |
| 32 "window": QPalette.ColorRole.Window, | |
| 33 " window-text": QPalette.ColorRole.WindowText, | |
| 34 "tooltip-base": QPalette.ColorRole.ToolTipBase, | |
| 35 "tooltip-text": QPalette.ColorRole.ToolTipText, | |
| 36 "button": QPalette.ColorRole.Button, | |
| 37 "button-text": QPalette.ColorRole.ButtonText, | |
| 38 "highlight": QPalette.ColorRole.Highlight, | |
| 39 "highlighted-text": QPalette.ColorRole.HighlightedText, | |
| 40 "link": QPalette.ColorRole.Link, | |
| 41 "link-visited": QPalette.ColorRole.LinkVisited, | |
| 42 } | |
| 43 | |
| 44 def __init__(self, argv): | |
| 45 """ | |
| 46 Constructor | |
| 47 | |
| 48 @param argv command line arguments | |
| 49 @type list | |
| 50 """ | |
| 51 super().__init__(argv) | |
| 52 | |
| 53 QCoreApplication.setAttribute( | |
| 54 Qt.ApplicationAttribute.AA_DontCreateNativeWidgetSiblings, True) | |
| 55 | |
| 56 self.__objectRegistry = {} | |
| 57 self.__pluginObjectRegistry = {} | |
| 58 | |
| 59 self.__smallScreen = False | |
| 60 if "--small-screen" in argv: | |
| 61 self.__smallScreen = True | |
| 62 argv.remove("--small-screen") | |
| 63 if not self.__smallScreen: | |
| 64 primaryScreenSize = self.primaryScreen().size() | |
| 65 self.__smallScreen = ( | |
| 66 primaryScreenSize.width() < 1920 or | |
| 67 primaryScreenSize.height() < 1080 | |
| 68 ) | |
| 69 | |
| 70 def usesSmallScreen(self): | |
| 71 """ | |
| 72 Public method to determine, if the application is used on a small | |
| 73 screen. | |
| 74 | |
| 75 @return flag indicating the use of a small screen | |
| 76 @rtype bool | |
| 77 """ | |
| 78 return self.__smallScreen | |
| 79 | |
| 80 def registerObject(self, name, objectRef): | |
| 81 """ | |
| 82 Public method to register an object in the object registry. | |
| 83 | |
| 84 @param name name of the object | |
| 85 @type str | |
| 86 @param objectRef reference to the object | |
| 87 @type any | |
| 88 @exception KeyError raised when the given name is already in use | |
| 89 """ | |
| 90 if name in self.__objectRegistry: | |
| 91 raise KeyError('Object "{0}" already registered.'.format(name)) | |
| 92 else: | |
| 93 self.__objectRegistry[name] = objectRef | |
| 94 | |
| 95 def getObject(self, name): | |
| 96 """ | |
| 97 Public method to get a reference to a registered object. | |
| 98 | |
| 99 @param name name of the object | |
| 100 @type str | |
| 101 @return reference to the registered object | |
| 102 @rtype any | |
| 103 @exception KeyError raised when the given name is not known | |
| 104 """ | |
| 105 if name not in self.__objectRegistry: | |
| 106 raise KeyError('Object "{0}" is not registered.'.format(name)) | |
| 107 | |
| 108 return self.__objectRegistry[name] | |
| 109 | |
| 110 def registerPluginObject(self, name, objectRef, pluginType=None): | |
| 111 """ | |
| 112 Public method to register a plugin object in the object registry. | |
| 113 | |
| 114 @param name name of the plugin object | |
| 115 @type str | |
| 116 @param objectRef reference to the plugin object | |
| 117 @type any | |
| 118 @param pluginType type of the plugin object | |
| 119 @type str | |
| 120 @exception KeyError raised when the given name is already in use | |
| 121 """ | |
| 122 if name in self.__pluginObjectRegistry: | |
| 123 raise KeyError( | |
| 124 'Pluginobject "{0}" already registered.'.format(name)) | |
| 125 else: | |
| 126 self.__pluginObjectRegistry[name] = (objectRef, pluginType) | |
| 127 | |
| 128 def unregisterPluginObject(self, name): | |
| 129 """ | |
| 130 Public method to unregister a plugin object in the object registry. | |
| 131 | |
| 132 @param name name of the plugin object | |
| 133 @type str | |
| 134 """ | |
| 135 if name in self.__pluginObjectRegistry: | |
| 136 del self.__pluginObjectRegistry[name] | |
| 137 | |
| 138 def getPluginObject(self, name): | |
| 139 """ | |
| 140 Public method to get a reference to a registered plugin object. | |
| 141 | |
| 142 @param name name of the plugin object | |
| 143 @type str | |
| 144 @return reference to the registered plugin object | |
| 145 @rtype any | |
| 146 @exception KeyError raised when the given name is not known | |
| 147 """ | |
| 148 if name not in self.__pluginObjectRegistry: | |
| 149 raise KeyError( | |
| 150 'Pluginobject "{0}" is not registered.'.format(name)) | |
| 151 | |
| 152 return self.__pluginObjectRegistry[name][0] | |
| 153 | |
| 154 def getPluginObjects(self): | |
| 155 """ | |
| 156 Public method to get a list of (name, reference) pairs of all | |
| 157 registered plugin objects. | |
| 158 | |
| 159 @return list of (name, reference) pairs | |
| 160 @rtype list of (str, any) | |
| 161 """ | |
| 162 objects = [] | |
| 163 for name in self.__pluginObjectRegistry: | |
| 164 objects.append((name, self.__pluginObjectRegistry[name][0])) | |
| 165 return objects | |
| 166 | |
| 167 def getPluginObjectType(self, name): | |
| 168 """ | |
| 169 Public method to get the type of a registered plugin object. | |
| 170 | |
| 171 @param name name of the plugin object | |
| 172 @type str | |
| 173 @return type of the plugin object | |
| 174 @rtype str | |
| 175 @exception KeyError raised when the given name is not known | |
| 176 """ | |
| 177 if name not in self.__pluginObjectRegistry: | |
| 178 raise KeyError( | |
| 179 'Pluginobject "{0}" is not registered.'.format(name)) | |
| 180 | |
| 181 return self.__pluginObjectRegistry[name][1] | |
| 182 | |
| 183 def getStyleIconsPath(self, universal=False): | |
| 184 """ | |
| 185 Public method to get the path for the style icons. | |
| 186 | |
| 187 @param universal flag indicating a universal file path (defaults to | |
| 188 False) | |
| 189 @type bool (optional) | |
| 190 @return directory path containing the style icons | |
| 191 @rtype str | |
| 192 """ | |
| 193 import Preferences | |
| 194 import Utilities | |
| 195 from eric7config import getConfig | |
| 196 | |
| 197 styleIconsPath = Preferences.getUI("StyleIconsPath") | |
| 198 if not styleIconsPath: | |
| 199 # default is the 'StyleIcons' sub-directory of the icons | |
| 200 # directory | |
| 201 styleIconsPath = os.path.join( | |
| 202 getConfig('ericIconDir'), "StyleIcons") | |
| 203 | |
| 204 if universal: | |
| 205 return Utilities.fromNativeSeparators(styleIconsPath) | |
| 206 else: | |
| 207 return styleIconsPath | |
| 208 | |
| 209 def setStyleSheetFile(self, filename): | |
| 210 """ | |
| 211 Public method to read a QSS style sheet file and set the application | |
| 212 style sheet based on its contents. | |
| 213 | |
| 214 @param filename name of the QSS style sheet file | |
| 215 @type str | |
| 216 """ | |
| 217 if filename: | |
| 218 try: | |
| 219 with open(filename, "r", encoding="utf-8") as f: | |
| 220 styleSheet = f.read() | |
| 221 except OSError as msg: | |
| 222 EricMessageBox.warning( | |
| 223 None, | |
| 224 QCoreApplication.translate( | |
| 225 "EricApplication", "Loading Style Sheet"), | |
| 226 QCoreApplication.translate( | |
| 227 "EricApplication", | |
| 228 """<p>The Qt Style Sheet file <b>{0}</b> could""" | |
| 229 """ not be read.<br>Reason: {1}</p>""") | |
| 230 .format(filename, str(msg))) | |
| 231 return | |
| 232 else: | |
| 233 styleSheet = "" | |
| 234 | |
| 235 if styleSheet: | |
| 236 # pre-process the style sheet to replace the placeholder for the | |
| 237 # path to the icons | |
| 238 styleIconsPath = self.getStyleIconsPath(universal=True) | |
| 239 styleSheet = styleSheet.replace("${path}", styleIconsPath) | |
| 240 | |
| 241 if "QPalette {" in styleSheet: | |
| 242 self.__setPaletteFromStyleSheet(styleSheet) | |
| 243 | |
| 244 ericApp().setStyleSheet(styleSheet) | |
| 245 | |
| 246 def __setPaletteFromStyleSheet(self, styleSheet): | |
| 247 """ | |
| 248 Private method to set the palette from a style sheet. | |
| 249 | |
| 250 @param styleSheet style sheet | |
| 251 @type str | |
| 252 """ | |
| 253 palette = self.palette() | |
| 254 | |
| 255 paletteStr = styleSheet.split("QPalette {")[1].split("}")[0] | |
| 256 paletteLines = paletteStr.strip().splitlines() | |
| 257 for line in paletteLines: | |
| 258 role, value = line.strip().split() | |
| 259 role = role.strip("\t :").lower() | |
| 260 value = value.strip("\t ;") | |
| 261 if role in self.PaletteRoleMapping and value.startswith("#"): | |
| 262 palette.setColor(self.PaletteRoleMapping[role], QColor(value)) | |
| 263 | |
| 264 self.setPalette(palette) | |
| 265 | |
| 266 def usesDarkPalette(self): | |
| 267 """ | |
| 268 Public method to check, if the application uses a palette with a dark | |
| 269 background. | |
| 270 | |
| 271 @return flag indicating the use of a palette with a dark background | |
| 272 @rtype bool | |
| 273 """ | |
| 274 palette = self.palette() | |
| 275 lightness = palette.color(QPalette.ColorRole.Window).lightness() | |
| 276 return lightness <= 128 | |
| 277 | |
| 278 ericApp = QCoreApplication.instance |
