Mercurial Repositories > eric / file comparison
comparison: eric6/Plugins/UiExtensionPlugins/Translator/TranslatorWidget.py
eric6/Plugins/UiExtensionPlugins/Translator/TranslatorWidget.py
- changeset 6942
- 2602857055c5
- parent 6645
- ad476851d7e0
- child 7229
- 53054eb5b15a
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| 6941:f99d60d6b59b | 6942:2602857055c5 |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2014 - 2019 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the translator widget. | |
| 8 """ | |
| 9 | |
| 10 from __future__ import unicode_literals | |
| 11 | |
| 12 from PyQt5.QtCore import pyqtSlot, QTemporaryFile | |
| 13 from PyQt5.QtWidgets import QWidget | |
| 14 try: | |
| 15 from PyQt5.QtMultimedia import QMediaPlayer, QMediaContent | |
| 16 MULTIMEDIA_AVAILABLE = True | |
| 17 except ImportError: | |
| 18 MULTIMEDIA_AVAILABLE = False | |
| 19 | |
| 20 from E5Gui import E5MessageBox | |
| 21 from E5Gui.E5Application import e5App | |
| 22 | |
| 23 from .Ui_TranslatorWidget import Ui_TranslatorWidget | |
| 24 | |
| 25 from .TranslatorLanguagesDb import TranslatorLanguagesDb | |
| 26 from . import TranslatorEngines | |
| 27 | |
| 28 import UI.PixmapCache | |
| 29 | |
| 30 | |
| 31 class TranslatorWidget(QWidget, Ui_TranslatorWidget): | |
| 32 """ | |
| 33 Class implementing the translator widget. | |
| 34 """ | |
| 35 def __init__(self, plugin, translator, parent=None): | |
| 36 """ | |
| 37 Constructor | |
| 38 | |
| 39 @param plugin reference to the plugin object (TranslatorPlugin) | |
| 40 @param translator reference to the translator object (Translator) | |
| 41 @param parent reference to the parent widget (QWidget) | |
| 42 """ | |
| 43 super(TranslatorWidget, self).__init__(parent) | |
| 44 self.setupUi(self) | |
| 45 | |
| 46 self.__plugin = plugin | |
| 47 self.__translator = translator | |
| 48 | |
| 49 self.__languages = TranslatorLanguagesDb(self) | |
| 50 | |
| 51 self.__translatorRequest = None | |
| 52 self.__translationEngine = None | |
| 53 | |
| 54 self.__mediaPlayer = None | |
| 55 self.__mediaFile = None | |
| 56 | |
| 57 audioAvailable = (MULTIMEDIA_AVAILABLE and | |
| 58 bool(QMediaPlayer.hasSupport("audio/mpeg"))) | |
| 59 self.pronounceOrigButton.setVisible(audioAvailable) | |
| 60 self.pronounceTransButton.setVisible(audioAvailable) | |
| 61 | |
| 62 self.pronounceOrigButton.setIcon( | |
| 63 self.__translator.getAppIcon("pronounce.png")) | |
| 64 self.pronounceTransButton.setIcon( | |
| 65 self.__translator.getAppIcon("pronounce.png")) | |
| 66 self.swapButton.setIcon( | |
| 67 self.__translator.getAppIcon("swap.png")) | |
| 68 self.translateButton.setIcon( | |
| 69 self.__translator.getAppIcon("translate.png")) | |
| 70 self.clearButton.setIcon(UI.PixmapCache.getIcon("editDelete.png")) | |
| 71 self.preferencesButton.setIcon(UI.PixmapCache.getIcon("configure.png")) | |
| 72 | |
| 73 self.translateButton.setEnabled(False) | |
| 74 self.clearButton.setEnabled(False) | |
| 75 self.pronounceOrigButton.setEnabled(False) | |
| 76 self.pronounceTransButton.setEnabled(False) | |
| 77 | |
| 78 selectedEngine = self.__plugin.getPreferences("SelectedEngine") | |
| 79 | |
| 80 self.__updateEngines() | |
| 81 engineIndex = self.engineComboBox.findData(selectedEngine) | |
| 82 self.engineComboBox.setCurrentIndex(engineIndex) | |
| 83 self.__engineComboBoxCurrentIndexChanged(engineIndex) | |
| 84 | |
| 85 self.engineComboBox.currentIndexChanged.connect( | |
| 86 self.__engineComboBoxCurrentIndexChanged) | |
| 87 self.__plugin.updateLanguages.connect(self.__updateLanguages) | |
| 88 | |
| 89 def __updateLanguages(self): | |
| 90 """ | |
| 91 Private slot to update the language combo boxes. | |
| 92 """ | |
| 93 self.__ensureTranslationEngineReady() | |
| 94 if self.__translationEngine is not None: | |
| 95 supportedCodes = self.__translationEngine.supportedLanguages() | |
| 96 enabledCodes = self.__plugin.getPreferences("EnabledLanguages") | |
| 97 | |
| 98 # 1. save current selections | |
| 99 origLanguage = self.origLanguageComboBox.itemData( | |
| 100 self.origLanguageComboBox.currentIndex()) | |
| 101 | |
| 102 # 2. reload the original language combo box | |
| 103 self.origLanguageComboBox.blockSignals(True) | |
| 104 self.origLanguageComboBox.clear() | |
| 105 for code in enabledCodes: | |
| 106 if code in supportedCodes: | |
| 107 language = self.__languages.getLanguage(code) | |
| 108 if language: | |
| 109 icon = self.__languages.getLanguageIcon(code) | |
| 110 self.origLanguageComboBox.addItem( | |
| 111 icon, language, code) | |
| 112 self.origLanguageComboBox.model().sort(0) | |
| 113 origIndex = self.origLanguageComboBox.findData(origLanguage) | |
| 114 if origIndex == -1: | |
| 115 origIndex = 0 | |
| 116 self.origLanguageComboBox.blockSignals(False) | |
| 117 self.origLanguageComboBox.setCurrentIndex(origIndex) | |
| 118 | |
| 119 def __updateEngines(self): | |
| 120 """ | |
| 121 Private slot to update the engines combo box. | |
| 122 """ | |
| 123 currentEngine = self.engineComboBox.itemData( | |
| 124 self.engineComboBox.currentIndex()) | |
| 125 self.engineComboBox.clear() | |
| 126 for engineName in TranslatorEngines.supportedEngineNames(): | |
| 127 icon = TranslatorEngines.getEngineIcon(engineName) | |
| 128 self.engineComboBox.addItem( | |
| 129 icon, | |
| 130 TranslatorEngines.engineDisplayName(engineName), | |
| 131 engineName) | |
| 132 self.engineComboBox.model().sort(0) | |
| 133 self.engineComboBox.setCurrentIndex( | |
| 134 self.engineComboBox.findData(currentEngine)) | |
| 135 | |
| 136 def __originalLanguage(self): | |
| 137 """ | |
| 138 Private method to return the code of the selected original language. | |
| 139 | |
| 140 @return code of the original language (string) | |
| 141 """ | |
| 142 return self.origLanguageComboBox.itemData( | |
| 143 self.origLanguageComboBox.currentIndex()) | |
| 144 | |
| 145 def __translationLanguage(self): | |
| 146 """ | |
| 147 Private method to return the code of the selected translation language. | |
| 148 | |
| 149 @return code of the translation language (string) | |
| 150 """ | |
| 151 return self.transLanguageComboBox.itemData( | |
| 152 self.transLanguageComboBox.currentIndex()) | |
| 153 | |
| 154 @pyqtSlot() | |
| 155 def on_translateButton_clicked(self): | |
| 156 """ | |
| 157 Private slot to translate the entered text. | |
| 158 """ | |
| 159 self.transEdit.clear() | |
| 160 result, ok = self.__translate( | |
| 161 self.origEdit.toPlainText(), | |
| 162 self.__originalLanguage(), | |
| 163 self.__translationLanguage()) | |
| 164 if ok: | |
| 165 self.transEdit.setHtml(result) | |
| 166 else: | |
| 167 E5MessageBox.critical( | |
| 168 self, | |
| 169 self.tr("Translation Error"), | |
| 170 result) | |
| 171 | |
| 172 @pyqtSlot() | |
| 173 def on_pronounceOrigButton_clicked(self): | |
| 174 """ | |
| 175 Private slot to pronounce the original text. | |
| 176 """ | |
| 177 self.__pronounce( | |
| 178 self.origEdit.toPlainText(), self.__originalLanguage()) | |
| 179 | |
| 180 @pyqtSlot() | |
| 181 def on_pronounceTransButton_clicked(self): | |
| 182 """ | |
| 183 Private slot to pronounce the translated text. | |
| 184 """ | |
| 185 self.__pronounce( | |
| 186 self.transEdit.toPlainText(), self.__translationLanguage()) | |
| 187 | |
| 188 @pyqtSlot() | |
| 189 def on_swapButton_clicked(self): | |
| 190 """ | |
| 191 Private slot to swap the languages. | |
| 192 """ | |
| 193 # save selected language codes | |
| 194 oLanguage = self.origLanguageComboBox.itemData( | |
| 195 self.origLanguageComboBox.currentIndex()) | |
| 196 | |
| 197 tLanguage = self.transLanguageComboBox.itemData( | |
| 198 self.transLanguageComboBox.currentIndex()) | |
| 199 | |
| 200 oIdx = self.origLanguageComboBox.findData(tLanguage) | |
| 201 if oIdx < 0: | |
| 202 oIdx = 0 | |
| 203 self.origLanguageComboBox.setCurrentIndex(oIdx) | |
| 204 | |
| 205 tIdx = self.transLanguageComboBox.findData(oLanguage) | |
| 206 if tIdx < 0: | |
| 207 tIdx = 0 | |
| 208 self.transLanguageComboBox.setCurrentIndex(tIdx) | |
| 209 | |
| 210 origText = self.origEdit.toPlainText() | |
| 211 self.origEdit.setPlainText(self.transEdit.toPlainText()) | |
| 212 self.transEdit.setPlainText(origText) | |
| 213 | |
| 214 @pyqtSlot() | |
| 215 def on_clearButton_clicked(self): | |
| 216 """ | |
| 217 Private slot to clear the text fields. | |
| 218 """ | |
| 219 self.origEdit.clear() | |
| 220 self.transEdit.clear() | |
| 221 | |
| 222 @pyqtSlot() | |
| 223 def on_origEdit_textChanged(self): | |
| 224 """ | |
| 225 Private slot to handle changes of the original text. | |
| 226 """ | |
| 227 self.__updatePronounceButtons() | |
| 228 self.__updateClearButton() | |
| 229 self.__updateTranslateButton() | |
| 230 | |
| 231 @pyqtSlot() | |
| 232 def on_transEdit_textChanged(self): | |
| 233 """ | |
| 234 Private slot to handle changes of the translation text. | |
| 235 """ | |
| 236 self.__updatePronounceButtons() | |
| 237 self.__updateClearButton() | |
| 238 | |
| 239 @pyqtSlot(int) | |
| 240 def on_origLanguageComboBox_currentIndexChanged(self, index): | |
| 241 """ | |
| 242 Private slot to handle the selection of the original language. | |
| 243 | |
| 244 @param index current index (integer) | |
| 245 """ | |
| 246 self.__plugin.setPreferences( | |
| 247 "OriginalLanguage", self.origLanguageComboBox.itemData(index)) | |
| 248 | |
| 249 supportedTargetCodes = \ | |
| 250 self.__translationEngine.supportedTargetLanguages( | |
| 251 self.origLanguageComboBox.itemData(index) | |
| 252 ) | |
| 253 if supportedTargetCodes is not None: | |
| 254 enabledCodes = self.__plugin.getPreferences("EnabledLanguages") | |
| 255 transLanguage = self.transLanguageComboBox.itemData( | |
| 256 self.transLanguageComboBox.currentIndex()) | |
| 257 self.transLanguageComboBox.clear() | |
| 258 if len(supportedTargetCodes) > 0: | |
| 259 for code in enabledCodes: | |
| 260 if code in supportedTargetCodes: | |
| 261 language = self.__languages.getLanguage(code) | |
| 262 if language: | |
| 263 icon = self.__languages.getLanguageIcon(code) | |
| 264 self.transLanguageComboBox.addItem( | |
| 265 icon, language, code) | |
| 266 self.transLanguageComboBox.model().sort(0) | |
| 267 index = self.transLanguageComboBox.findData(transLanguage) | |
| 268 if index == -1: | |
| 269 index = 0 | |
| 270 self.transLanguageComboBox.setCurrentIndex(index) | |
| 271 | |
| 272 self.__updateTranslateButton() | |
| 273 | |
| 274 @pyqtSlot(int) | |
| 275 def on_transLanguageComboBox_currentIndexChanged(self, index): | |
| 276 """ | |
| 277 Private slot to handle the selection of the translation language. | |
| 278 | |
| 279 @param index current index (integer) | |
| 280 """ | |
| 281 self.__plugin.setPreferences( | |
| 282 "TranslationLanguage", self.transLanguageComboBox.itemData(index)) | |
| 283 | |
| 284 @pyqtSlot() | |
| 285 def __availableTranslationsLoaded(self): | |
| 286 """ | |
| 287 Private slot to handle the availability of translations. | |
| 288 """ | |
| 289 origLanguage = self.__plugin.getPreferences("OriginalLanguage") | |
| 290 transLanguage = self.__plugin.getPreferences("TranslationLanguage") | |
| 291 | |
| 292 self.__updateLanguages() | |
| 293 | |
| 294 origIndex = self.origLanguageComboBox.findData(origLanguage) | |
| 295 self.origLanguageComboBox.setCurrentIndex(origIndex) | |
| 296 self.on_origLanguageComboBox_currentIndexChanged(origIndex) | |
| 297 self.transLanguageComboBox.setCurrentIndex( | |
| 298 self.transLanguageComboBox.findData(transLanguage)) | |
| 299 | |
| 300 def __ensureTranslationEngineReady(self): | |
| 301 """ | |
| 302 Private slot to ensure, that the currently selected translation engine | |
| 303 is ready. | |
| 304 """ | |
| 305 engineName = self.engineComboBox.itemData( | |
| 306 self.engineComboBox.currentIndex()) | |
| 307 if self.__translationEngine is not None and \ | |
| 308 self.__translationEngine.engineName() != engineName: | |
| 309 self.__translationEngine.availableTranslationsLoaded.disconnect( | |
| 310 self.__availableTranslationsLoaded) | |
| 311 self.__translationEngine.deleteLater() | |
| 312 self.__translationEngine = None | |
| 313 | |
| 314 if self.__translationEngine is None: | |
| 315 self.__translationEngine = TranslatorEngines.getTranslationEngine( | |
| 316 engineName, self.__plugin, self) | |
| 317 if self.__translationEngine is not None: | |
| 318 self.__translationEngine.availableTranslationsLoaded.connect( | |
| 319 self.__availableTranslationsLoaded) | |
| 320 | |
| 321 @pyqtSlot(int) | |
| 322 def __engineComboBoxCurrentIndexChanged(self, index): | |
| 323 """ | |
| 324 Private slot to handle the selection of a translation service. | |
| 325 | |
| 326 @param index current index | |
| 327 @type int | |
| 328 """ | |
| 329 self.__ensureTranslationEngineReady() | |
| 330 if self.__translationEngine is not None: | |
| 331 self.__updateTranslateButton() | |
| 332 self.__updatePronounceButtons() | |
| 333 | |
| 334 self.__plugin.setPreferences( | |
| 335 "SelectedEngine", self.engineComboBox.itemData(index)) | |
| 336 | |
| 337 def __updatePronounceButtons(self): | |
| 338 """ | |
| 339 Private slot to set the state of the pronounce buttons. | |
| 340 """ | |
| 341 if self.__translationEngine is not None: | |
| 342 hasTTS = self.__translationEngine.hasTTS() | |
| 343 else: | |
| 344 hasTTS = False | |
| 345 self.pronounceOrigButton.setEnabled( | |
| 346 hasTTS and bool(self.origEdit.toPlainText())) | |
| 347 self.pronounceTransButton.setEnabled( | |
| 348 hasTTS and bool(self.transEdit.toPlainText())) | |
| 349 | |
| 350 def __updateClearButton(self): | |
| 351 """ | |
| 352 Private slot to set the state of the clear button. | |
| 353 """ | |
| 354 enable = bool(self.origEdit.toPlainText()) or \ | |
| 355 bool(self.transEdit.toPlainText()) | |
| 356 self.clearButton.setEnabled(enable) | |
| 357 | |
| 358 def __updateTranslateButton(self): | |
| 359 """ | |
| 360 Private slot to set the state of the translate button. | |
| 361 """ | |
| 362 enable = bool(self.origEdit.toPlainText()) | |
| 363 enable &= bool(self.__translationLanguage()) | |
| 364 enable &= bool(self.__originalLanguage()) | |
| 365 self.translateButton.setEnabled(enable) | |
| 366 | |
| 367 def __translate(self, text, originalLanguage, translationLanguage): | |
| 368 """ | |
| 369 Private method to translate the given text. | |
| 370 | |
| 371 @param text text to be translated (string) | |
| 372 @param originalLanguage language code of the original (string) | |
| 373 @param translationLanguage language code of the translation (string) | |
| 374 @return tuple of translated text (string) and flag indicating | |
| 375 success (boolean) | |
| 376 """ | |
| 377 if self.__translatorRequest is None: | |
| 378 from .TranslatorRequest import TranslatorRequest | |
| 379 self.__translatorRequest = TranslatorRequest(self) | |
| 380 | |
| 381 self.__ensureTranslationEngineReady() | |
| 382 if self.__translationEngine is None: | |
| 383 return "", False | |
| 384 else: | |
| 385 result, ok = self.__translationEngine.getTranslation( | |
| 386 self.__translatorRequest, text, originalLanguage, | |
| 387 translationLanguage) | |
| 388 | |
| 389 return result, ok | |
| 390 | |
| 391 def __pronounce(self, text, language): | |
| 392 """ | |
| 393 Private method to pronounce the given text. | |
| 394 | |
| 395 @param text text to be pronounced (string) | |
| 396 @param language language code of the text (string) | |
| 397 """ | |
| 398 if not text or not language: | |
| 399 return | |
| 400 | |
| 401 if self.__translatorRequest is None: | |
| 402 from .TranslatorRequest import TranslatorRequest | |
| 403 self.__translatorRequest = TranslatorRequest(self) | |
| 404 | |
| 405 if self.__mediaPlayer is None: | |
| 406 self.__mediaPlayer = QMediaPlayer(self) | |
| 407 self.__mediaPlayer.stateChanged.connect( | |
| 408 self.__mediaPlayerStateChanged) | |
| 409 | |
| 410 if self.__mediaPlayer.state() == QMediaPlayer.PlayingState: | |
| 411 return | |
| 412 | |
| 413 self.__ensureTranslationEngineReady() | |
| 414 if self.__translationEngine is not None: | |
| 415 if not self.__translationEngine.hasTTS(): | |
| 416 E5MessageBox.critical( | |
| 417 self, | |
| 418 self.tr("Translation Error"), | |
| 419 self.tr("The selected translation service does not" | |
| 420 " support the Text-to-Speech function.")) | |
| 421 return | |
| 422 | |
| 423 data, ok = self.__translationEngine.getTextToSpeechData( | |
| 424 self.__translatorRequest, text, language) | |
| 425 if ok: | |
| 426 self.__mediaFile = QTemporaryFile(self) | |
| 427 self.__mediaFile.open() | |
| 428 self.__mediaFile.setAutoRemove(False) | |
| 429 self.__mediaFile.write(data) | |
| 430 | |
| 431 self.__mediaPlayer.setMedia(QMediaContent(), self.__mediaFile) | |
| 432 self.__mediaPlayer.play() | |
| 433 else: | |
| 434 E5MessageBox.critical( | |
| 435 self, | |
| 436 self.tr("Translation Error"), | |
| 437 data) | |
| 438 | |
| 439 def __mediaPlayerStateChanged(self, state): | |
| 440 """ | |
| 441 Private slot handling changes of the media player state. | |
| 442 | |
| 443 @param state media player state (QAudio.State) | |
| 444 """ | |
| 445 if state == QMediaPlayer.StoppedState: | |
| 446 self.__mediaFile.close() | |
| 447 self.__mediaFile.remove() | |
| 448 self.__mediaFile = None | |
| 449 | |
| 450 @pyqtSlot() | |
| 451 def on_preferencesButton_clicked(self): | |
| 452 """ | |
| 453 Private slot to open the Translator configuration page. | |
| 454 """ | |
| 455 e5App().getObject("UserInterface").showPreferences("translatorPage") |
