git.maemo.org Git - gonvert/blob - src/gonvert_qt.py

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import sys
   7 import os
   8 import math
   9 import simplejson
  10 import logging
  11
  12 from PyQt4 import QtGui
  13 from PyQt4 import QtCore
  14
  15 import constants
  16 import maeqt
  17 from util import misc as misc_utils
  18 import unit_data
  19
  20
  21 _moduleLogger = logging.getLogger("gonvert_glade")
  22
  23
  24 IS_MAEMO = True
  25
  26
  27 def change_menu_label(widgets, labelname, newtext):
  28         item_label = widgets.get_widget(labelname).get_children()[0]
  29         item_label.set_text(newtext)
  30
  31
  32 def split_number(number):
  33         try:
  34                 fractional, integer = math.modf(number)
  35         except TypeError:
  36                 integerDisplay = number
  37                 fractionalDisplay = ""
  38         else:
  39                 integerDisplay = str(integer)
  40                 fractionalDisplay = str(fractional)
  41                 if "e+" in integerDisplay:
  42                         integerDisplay = number
  43                         fractionalDisplay = ""
  44                 elif "e-" in fractionalDisplay and 0.0 < integer:
  45                         integerDisplay = number
  46                         fractionalDisplay = ""
  47                 elif "e-" in fractionalDisplay:
  48                         integerDisplay = ""
  49                         fractionalDisplay = number
  50                 else:
  51                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  52                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  53
  54         return integerDisplay, fractionalDisplay
  55
  56
  57 class Gonvert(object):
  58
  59         _DATA_PATHS = [
  60                 os.path.dirname(__file__),
  61                 os.path.join(os.path.dirname(__file__), "../share"),
  62                 os.path.join(os.path.dirname(__file__), "../data"),
  63                 '/usr/share/gonvert',
  64                 '/opt/gonvert/share',
  65         ]
  66
  67         def __init__(self, app):
  68                 self._dataPath = ""
  69                 for dataPath in self._DATA_PATHS:
  70                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  71                         if os.path.isfile(appIconPath):
  72                                 self._dataPath = dataPath
  73                                 break
  74                 else:
  75                         raise RuntimeError("UI Descriptor not found!")
  76                 self._app = app
  77                 self._appIconPath = appIconPath
  78                 self._recent = []
  79                 self._hiddenCategories = set()
  80                 self._hiddenUnits = {}
  81                 self._clipboard = QtGui.QApplication.clipboard()
  82
  83                 self._jumpWindow = None
  84                 self._recentWindow = None
  85                 self._mainWindow = None
  86                 self._catWindow = None
  87                 self._quickWindow = None
  88
  89                 self._condensedAction = QtGui.QAction(None)
  90                 self._condensedAction.setText("Condensed View")
  91                 self._condensedAction.setCheckable(True)
  92                 self._condensedAction.triggered.connect(self._on_condensed_start)
  93
  94                 self._jumpAction = QtGui.QAction(None)
  95                 self._jumpAction.setText("Quick Jump")
  96                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  97                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  98                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  99                 self._jumpAction.triggered.connect(self._on_jump_start)
 100
 101                 self._recentAction = QtGui.QAction(None)
 102                 self._recentAction.setText("Recent Units")
 103                 self._recentAction.setStatusTip("View the recent units")
 104                 self._recentAction.setToolTip("View the recent units")
 105                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
 106                 self._recentAction.triggered.connect(self._on_recent_start)
 107
 108                 self._fullscreenAction = QtGui.QAction(None)
 109                 self._fullscreenAction.setText("Fullscreen")
 110                 self._fullscreenAction.setCheckable(True)
 111                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 112                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 113
 114                 self._showFavoritesAction = QtGui.QAction(None)
 115                 self._showFavoritesAction.setCheckable(True)
 116                 self._showFavoritesAction.setText("Favorites Only")
 117
 118                 self._logAction = QtGui.QAction(None)
 119                 self._logAction.setText("Log")
 120                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 121                 self._logAction.triggered.connect(self._on_log)
 122
 123                 self._quitAction = QtGui.QAction(None)
 124                 self._quitAction.setText("Quit")
 125                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 126                 self._quitAction.triggered.connect(self._on_quit)
 127
 128                 self._app.lastWindowClosed.connect(self._on_app_quit)
 129                 self.load_settings()
 130
 131                 self.request_category()
 132                 if self._recent:
 133                         self._mainWindow.select_category(self._recent[-1][0])
 134
 135         def request_category(self):
 136                 if self._mainWindow is not None:
 137                         self._mainWindow.hide()
 138
 139                 if self._condensedAction.isChecked():
 140                         if self._quickWindow is None:
 141                                 self._quickWindow = QuickConvert(None, self)
 142                                 self._quickWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_quickWindow", obj))
 143                         else:
 144                                 self._quickWindow.show()
 145                         self._mainWindow = self._quickWindow
 146                 else:
 147                         if self._catWindow is None:
 148                                 self._catWindow = CategoryWindow(None, self)
 149                                 self._catWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_catWindow", obj))
 150                         else:
 151                                 self._catWindow.window.show()
 152                         self._mainWindow = self._catWindow
 153
 154                 if self._recent:
 155                         self._mainWindow.select_category(self._recent[-1][0])
 156
 157                 return self._mainWindow
 158
 159         def search_units(self):
 160                 jumpWindow = QuickJump(None, self)
 161                 jumpWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_jumpWindow", obj))
 162                 self._close_windows()
 163                 self._jumpWindow = jumpWindow
 164                 return self._jumpWindow
 165
 166         def show_recent(self):
 167                 recentWindow = Recent(None, self)
 168                 recentWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_recentWindow", obj))
 169                 self._close_windows()
 170                 self._recentWindow = recentWindow
 171                 return self._recentWindow
 172
 173         def add_recent(self, categoryName, unitName):
 174                 catUnit = categoryName, unitName
 175                 try:
 176                         self._recent.remove(catUnit)
 177                 except ValueError:
 178                         pass # ignore if its not already in the recent history
 179                 assert catUnit not in self._recent
 180                 self._recent.append(catUnit)
 181
 182         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 183                 recentUnitName = ""
 184                 for catName, unitName in reversed(self._recent):
 185                         if catName == categoryName:
 186                                 recentUnitName = unitName
 187                                 if fromMostRecent <= 0:
 188                                         break
 189                                 else:
 190                                         fromMostRecent -= 1
 191                 return recentUnitName
 192
 193         def get_recent(self):
 194                 return reversed(self._recent)
 195
 196         @property
 197         def hiddenCategories(self):
 198                 return self._hiddenCategories
 199
 200         def get_hidden_units(self, categoryName):
 201                 try:
 202                         return self._hiddenUnits[categoryName]
 203                 except KeyError:
 204                         self._hiddenUnits[categoryName] = set()
 205                         return self._hiddenUnits[categoryName]
 206
 207         def load_settings(self):
 208                 try:
 209                         with open(constants._user_settings_, "r") as settingsFile:
 210                                 settings = simplejson.load(settingsFile)
 211                 except IOError, e:
 212                         _moduleLogger.info("No settings")
 213                         settings = {}
 214                 except ValueError:
 215                         _moduleLogger.info("Settings were corrupt")
 216                         settings = {}
 217
 218                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 219
 220                 recent = settings.get("recent", self._recent)
 221                 for category, unit in recent:
 222                         self.add_recent(category, unit)
 223
 224                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 225                 self._hiddenUnits = dict(
 226                         (catName, set(units))
 227                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 228                 )
 229
 230                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 231
 232                 self._condensedAction.setChecked(settings.get("useQuick", self._condensedAction.isChecked()))
 233
 234         def save_settings(self):
 235                 settings = {
 236                         "isFullScreen": self._fullscreenAction.isChecked(),
 237                         "recent": self._recent,
 238                         "hiddenCategories": list(self._hiddenCategories),
 239                         "hiddenUnits": dict(
 240                                 (catName, list(units))
 241                                 for (catName, units) in self._hiddenUnits.iteritems()
 242                         ),
 243                         "showFavorites": self._showFavoritesAction.isChecked(),
 244                         "useQuick": self._condensedAction.isChecked(),
 245                 }
 246                 with open(constants._user_settings_, "w") as settingsFile:
 247                         simplejson.dump(settings, settingsFile)
 248
 249         @property
 250         def appIconPath(self):
 251                 return self._appIconPath
 252
 253         @property
 254         def jumpAction(self):
 255                 return self._jumpAction
 256
 257         @property
 258         def recentAction(self):
 259                 return self._recentAction
 260
 261         @property
 262         def fullscreenAction(self):
 263                 return self._fullscreenAction
 264
 265         @property
 266         def condensedAction(self):
 267                 return self._condensedAction
 268
 269         @property
 270         def logAction(self):
 271                 return self._logAction
 272
 273         @property
 274         def quitAction(self):
 275                 return self._quitAction
 276
 277         @property
 278         def showFavoritesAction(self):
 279                 return self._showFavoritesAction
 280
 281         def _walk_children(self):
 282                 if self._catWindow is not None:
 283                         yield self._catWindow
 284                 if self._quickWindow is not None:
 285                         yield self._quickWindow
 286                 if self._jumpWindow is not None:
 287                         yield self._jumpWindow
 288                 if self._recentWindow is not None:
 289                         yield self._recentWindow
 290
 291         def _close_windows(self):
 292                 for window in self._walk_children():
 293                         window.close()
 294                 self._catWindow = None
 295                 self._quickWindow = None
 296                 self._jumpWindow = None
 297                 self._recentWindow = None
 298
 299         @misc_utils.log_exception(_moduleLogger)
 300         def _on_app_quit(self, checked = False):
 301                 self.save_settings()
 302
 303         @misc_utils.log_exception(_moduleLogger)
 304         def _on_child_close(self, name, obj = None):
 305                 if not hasattr(self, name):
 306                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 307                         return
 308                 setattr(self, name, None)
 309
 310         @misc_utils.log_exception(_moduleLogger)
 311         def _on_toggle_fullscreen(self, checked = False):
 312                 for window in self._walk_children():
 313                         window.set_fullscreen(checked)
 314
 315         @misc_utils.log_exception(_moduleLogger)
 316         def _on_condensed_start(self, checked = False):
 317                 self.request_category()
 318
 319         @misc_utils.log_exception(_moduleLogger)
 320         def _on_jump_start(self, checked = False):
 321                 self.search_units()
 322
 323         @misc_utils.log_exception(_moduleLogger)
 324         def _on_recent_start(self, checked = False):
 325                 self.show_recent()
 326
 327         @misc_utils.log_exception(_moduleLogger)
 328         def _on_log(self, checked = False):
 329                 with open(constants._user_logpath_, "r") as f:
 330                         logLines = f.xreadlines()
 331                         log = "".join(logLines)
 332                         self._clipboard.setText(log)
 333
 334         @misc_utils.log_exception(_moduleLogger)
 335         def _on_quit(self, checked = False):
 336                 self._close_windows()
 337
 338
 339 class QuickJump(object):
 340
 341         MINIMAL_ENTRY = 3
 342
 343         def __init__(self, parent, app):
 344                 self._app = app
 345
 346                 self._searchLabel = QtGui.QLabel("Search:")
 347                 self._searchEntry = QtGui.QLineEdit("")
 348                 self._searchEntry.textEdited.connect(self._on_search_edited)
 349
 350                 self._entryLayout = QtGui.QHBoxLayout()
 351                 self._entryLayout.addWidget(self._searchLabel)
 352                 self._entryLayout.addWidget(self._searchEntry)
 353
 354                 self._resultsBox = QtGui.QTreeWidget()
 355                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 356                 self._resultsBox.setHeaderHidden(True)
 357                 if not IS_MAEMO:
 358                         self._resultsBox.setAlternatingRowColors(True)
 359                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 360
 361                 self._layout = QtGui.QVBoxLayout()
 362                 self._layout.addLayout(self._entryLayout)
 363                 self._layout.addWidget(self._resultsBox)
 364
 365                 centralWidget = QtGui.QWidget()
 366                 centralWidget.setLayout(self._layout)
 367
 368                 self._window = QtGui.QMainWindow(parent)
 369                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 370                 maeqt.set_autorient(self._window, True)
 371                 maeqt.set_stackable(self._window, True)
 372                 if parent is not None:
 373                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 374                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 375                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 376                 self._window.setCentralWidget(centralWidget)
 377
 378                 self._closeWindowAction = QtGui.QAction(None)
 379                 self._closeWindowAction.setText("Close")
 380                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 381                 self._closeWindowAction.triggered.connect(self._on_close_window)
 382
 383                 if IS_MAEMO:
 384                         self._window.addAction(self._closeWindowAction)
 385                         self._window.addAction(self._app.quitAction)
 386                         self._window.addAction(self._app.fullscreenAction)
 387                 else:
 388                         fileMenu = self._window.menuBar().addMenu("&Units")
 389                         fileMenu.addAction(self._closeWindowAction)
 390                         fileMenu.addAction(self._app.quitAction)
 391
 392                         viewMenu = self._window.menuBar().addMenu("&View")
 393                         viewMenu.addAction(self._app.fullscreenAction)
 394
 395                 self._window.addAction(self._app.logAction)
 396
 397                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 398                 self._window.show()
 399
 400         @property
 401         def window(self):
 402                 return self._window
 403
 404         def show(self):
 405                 self._window.show()
 406
 407         def hide(self):
 408                 self._window.hide()
 409
 410         def close(self):
 411                 self._window.close()
 412
 413         def set_fullscreen(self, isFullscreen):
 414                 if isFullscreen:
 415                         self._window.showFullScreen()
 416                 else:
 417                         self._window.showNormal()
 418
 419         @misc_utils.log_exception(_moduleLogger)
 420         def _on_close_window(self, checked = True):
 421                 self.close()
 422
 423         @misc_utils.log_exception(_moduleLogger)
 424         def _on_result_clicked(self, item, columnIndex):
 425                 categoryName = unicode(item.text(0))
 426                 unitName = unicode(item.text(1))
 427                 catWindow = self._app.request_category()
 428                 unitsWindow = catWindow.select_category(categoryName)
 429                 unitsWindow.select_unit(unitName)
 430                 self.close()
 431
 432         @misc_utils.log_exception(_moduleLogger)
 433         def _on_search_edited(self, *args):
 434                 userInput = self._searchEntry.text()
 435                 if len(userInput) <  self.MINIMAL_ENTRY:
 436                         return
 437
 438                 self._resultsBox.clear()
 439                 lowerInput = str(userInput).lower()
 440                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 441                         units = unit_data.get_units(category)
 442                         for unitIndex, unit in enumerate(units):
 443                                 loweredUnit = unit.lower()
 444                                 if lowerInput in loweredUnit:
 445                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 446                                         twi.setText(0, category)
 447                                         twi.setText(1, unit)
 448
 449
 450 class Recent(object):
 451
 452         def __init__(self, parent, app):
 453                 self._app = app
 454
 455                 self._resultsBox = QtGui.QTreeWidget()
 456                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 457                 self._resultsBox.setHeaderHidden(True)
 458                 if not IS_MAEMO:
 459                         self._resultsBox.setAlternatingRowColors(True)
 460                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 461
 462                 self._layout = QtGui.QVBoxLayout()
 463                 self._layout.addWidget(self._resultsBox)
 464
 465                 centralWidget = QtGui.QWidget()
 466                 centralWidget.setLayout(self._layout)
 467
 468                 self._window = QtGui.QMainWindow(parent)
 469                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 470                 maeqt.set_autorient(self._window, True)
 471                 maeqt.set_stackable(self._window, True)
 472                 if parent is not None:
 473                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 474                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 475                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 476                 self._window.setCentralWidget(centralWidget)
 477
 478                 for cat, unit in self._app.get_recent():
 479                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 480                         twi.setText(0, cat)
 481                         twi.setText(1, unit)
 482
 483                 self._closeWindowAction = QtGui.QAction(None)
 484                 self._closeWindowAction.setText("Close")
 485                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 486                 self._closeWindowAction.triggered.connect(self._on_close_window)
 487
 488                 if IS_MAEMO:
 489                         self._window.addAction(self._closeWindowAction)
 490                         self._window.addAction(self._app.quitAction)
 491                         self._window.addAction(self._app.fullscreenAction)
 492                 else:
 493                         fileMenu = self._window.menuBar().addMenu("&Units")
 494                         fileMenu.addAction(self._closeWindowAction)
 495                         fileMenu.addAction(self._app.quitAction)
 496
 497                         viewMenu = self._window.menuBar().addMenu("&View")
 498                         viewMenu.addAction(self._app.fullscreenAction)
 499
 500                 self._window.addAction(self._app.logAction)
 501
 502                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 503                 self._window.show()
 504
 505         @property
 506         def window(self):
 507                 return self._window
 508
 509         def show(self):
 510                 self._window.show()
 511
 512         def hide(self):
 513                 self._window.hide()
 514
 515         def close(self):
 516                 self._window.close()
 517
 518         def set_fullscreen(self, isFullscreen):
 519                 if isFullscreen:
 520                         self._window.showFullScreen()
 521                 else:
 522                         self._window.showNormal()
 523
 524         @misc_utils.log_exception(_moduleLogger)
 525         def _on_close_window(self, checked = True):
 526                 self.close()
 527
 528         @misc_utils.log_exception(_moduleLogger)
 529         def _on_result_clicked(self, item, columnIndex):
 530                 categoryName = unicode(item.text(0))
 531                 unitName = unicode(item.text(1))
 532                 catWindow = self._app.request_category()
 533                 unitsWindow = catWindow.select_category(categoryName)
 534                 unitsWindow.select_unit(unitName)
 535                 self.close()
 536
 537
 538 class QuickConvert(object):
 539
 540         def __init__(self, parent, app):
 541                 self._app = app
 542                 self._categoryName = ""
 543                 self._inputUnitName = ""
 544                 self._outputUnitName = ""
 545                 self._unitNames = []
 546                 self._favoritesWindow = None
 547
 548                 self._inputUnitValue = QtGui.QLineEdit()
 549                 self._inputUnitValue.setInputMethodHints(QtCore.Qt.ImhPreferNumbers)
 550                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 551                 self._inputUnitSymbol = QtGui.QLabel()
 552
 553                 self._outputUnitValue = QtGui.QLabel()
 554                 self._outputUnitSymbol = QtGui.QLabel()
 555
 556                 self._conversionLayout = QtGui.QHBoxLayout()
 557                 self._conversionLayout.addWidget(self._inputUnitValue)
 558                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 559                 self._conversionLayout.addWidget(self._outputUnitValue)
 560                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 561
 562                 self._categoryView = QtGui.QTreeWidget()
 563                 self._categoryView.setHeaderLabels(["Categories"])
 564                 self._categoryView.setHeaderHidden(True)
 565                 if not IS_MAEMO:
 566                         self._categoryView.setAlternatingRowColors(True)
 567                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 568                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 569                 for catName in unit_data.UNIT_CATEGORIES:
 570                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 571                         twi.setText(0, catName)
 572                 self._categorySelection = self._categoryView.selectionModel()
 573                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 574
 575                 self._inputView = QtGui.QTreeWidget()
 576                 self._inputView.setHeaderLabels(["Input", "Name"])
 577                 self._inputView.setHeaderHidden(True)
 578                 self._inputView.header().hideSection(1)
 579                 if not IS_MAEMO:
 580                         self._inputView.setAlternatingRowColors(True)
 581                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 582                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 583                 self._inputSelection = self._inputView.selectionModel()
 584                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 585
 586                 self._outputView = QtGui.QTreeWidget()
 587                 self._outputView.setHeaderLabels(["Output", "Name"])
 588                 self._outputView.setHeaderHidden(True)
 589                 self._outputView.header().hideSection(1)
 590                 if not IS_MAEMO:
 591                         self._outputView.setAlternatingRowColors(True)
 592                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 593                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 594                 self._outputWidgets = []
 595                 self._outputSelection = self._outputView.selectionModel()
 596                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 597
 598                 self._selectionLayout = QtGui.QHBoxLayout()
 599                 self._selectionLayout.addWidget(self._categoryView)
 600                 self._selectionLayout.addWidget(self._inputView)
 601                 self._selectionLayout.addWidget(self._outputView)
 602
 603                 self._layout = QtGui.QVBoxLayout()
 604                 self._layout.addLayout(self._conversionLayout)
 605                 self._layout.addLayout(self._selectionLayout)
 606
 607                 centralWidget = QtGui.QWidget()
 608                 centralWidget.setLayout(self._layout)
 609
 610                 self._window = QtGui.QMainWindow(parent)
 611                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 612                 maeqt.set_autorient(self._window, True)
 613                 maeqt.set_stackable(self._window, True)
 614                 if parent is not None:
 615                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 616                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 617                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 618                 self._window.setCentralWidget(centralWidget)
 619
 620                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 621                 self._chooseCatFavoritesAction.setText("Select Categories")
 622                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 623
 624                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 625                 self._chooseUnitFavoritesAction.setText("Select Units")
 626                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 627
 628                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 629
 630                 self._closeWindowAction = QtGui.QAction(None)
 631                 self._closeWindowAction.setText("Close Window")
 632                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 633                 self._closeWindowAction.triggered.connect(self._on_close_window)
 634
 635                 if IS_MAEMO:
 636                         self._window.addAction(self._closeWindowAction)
 637                         self._window.addAction(self._app.quitAction)
 638                         self._window.addAction(self._app.fullscreenAction)
 639
 640                         fileMenu = self._window.menuBar().addMenu("&Units")
 641                         fileMenu.addAction(self._chooseCatFavoritesAction)
 642                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 643
 644                         viewMenu = self._window.menuBar().addMenu("&View")
 645                         viewMenu.addAction(self._app.showFavoritesAction)
 646                         viewMenu.addAction(self._app.condensedAction)
 647                         viewMenu.addSeparator()
 648                         viewMenu.addAction(self._app.jumpAction)
 649                         viewMenu.addAction(self._app.recentAction)
 650                 else:
 651                         fileMenu = self._window.menuBar().addMenu("&Units")
 652                         fileMenu.addAction(self._chooseCatFavoritesAction)
 653                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 654                         fileMenu.addAction(self._closeWindowAction)
 655                         fileMenu.addAction(self._app.quitAction)
 656
 657                         viewMenu = self._window.menuBar().addMenu("&View")
 658                         viewMenu.addAction(self._app.showFavoritesAction)
 659                         viewMenu.addAction(self._app.condensedAction)
 660                         viewMenu.addSeparator()
 661                         viewMenu.addAction(self._app.jumpAction)
 662                         viewMenu.addAction(self._app.recentAction)
 663                         viewMenu.addSeparator()
 664                         viewMenu.addAction(self._app.fullscreenAction)
 665
 666                 self._window.addAction(self._app.logAction)
 667
 668                 self._update_favorites()
 669                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 670                 self._window.show()
 671
 672         @property
 673         def window(self):
 674                 return self._window
 675
 676         def show(self):
 677                 self._window.show()
 678
 679         def hide(self):
 680                 self._window.hide()
 681
 682         def close(self):
 683                 self._window.close()
 684
 685         def set_fullscreen(self, isFullscreen):
 686                 if isFullscreen:
 687                         self._window.showFullScreen()
 688                 else:
 689                         self._window.showNormal()
 690
 691         def select_category(self, categoryName):
 692                 self._inputUnitValue.setText("")
 693                 self._inputView.clear()
 694                 self._outputView.clear()
 695                 self._categoryName = categoryName
 696
 697                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 698                 self._unitNames = list(unit_data.get_units(categoryName))
 699                 self._unitNames.sort()
 700                 for key in self._unitNames:
 701                         conversion, unit, description = unitData[key]
 702                         if not unit:
 703                                 unit = key
 704
 705                         twi = QtGui.QTreeWidgetItem(self._inputView)
 706                         twi.setText(0, unit)
 707                         twi.setText(1, key)
 708
 709                         twi = QtGui.QTreeWidgetItem(self._outputView)
 710                         twi.setText(0, unit)
 711                         twi.setText(1, key)
 712
 713                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 714                 rootIndex = self._categoryView.rootIndex()
 715                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 716                 self._categoryView.scrollTo(currentIndex)
 717
 718                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 719                 if defaultInputUnitName:
 720                         self.select_input(defaultInputUnitName)
 721                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 722                         assert defaultOutputUnitName
 723                         self.select_output(defaultOutputUnitName)
 724
 725                 return self
 726
 727         def select_unit(self, name):
 728                 self.select_input(name)
 729
 730         def select_input(self, name):
 731                 self._app.add_recent(self._categoryName, name)
 732                 self._inputUnitName = name
 733
 734                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 735                 conversion, unit, description = unitData[name]
 736
 737                 self._inputUnitSymbol.setText(unit if unit else name)
 738
 739                 i = self._unitNames.index(name)
 740                 rootIndex = self._inputView.rootIndex()
 741                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 742                 self._inputView.scrollTo(currentIndex)
 743
 744         def select_output(self, name):
 745                 # Add the output to recent but don't make things weird by making it the most recent
 746                 self._app.add_recent(self._categoryName, name)
 747                 self._app.add_recent(self._categoryName, self._inputUnitName)
 748                 self._outputUnitName = name
 749
 750                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 751                 conversion, unit, description = unitData[name]
 752
 753                 self._outputUnitSymbol.setText(unit if unit else name)
 754
 755                 i = self._unitNames.index(name)
 756                 rootIndex = self._outputView.rootIndex()
 757                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 758                 self._outputView.scrollTo(currentIndex)
 759
 760         def _sanitize_value(self, userEntry):
 761                 if self._categoryName == "Computer Numbers":
 762                         if userEntry == '':
 763                                 value = '0'
 764                         else:
 765                                 value = userEntry
 766                 else:
 767                         if userEntry == '':
 768                                 value = 0.0
 769                         else:
 770                                 value = float(userEntry)
 771                 return value
 772
 773         def _update_favorites(self):
 774                 if self._app.showFavoritesAction.isChecked():
 775                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 776                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 777                                 if catName in self._app.hiddenCategories:
 778                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 779                                 else:
 780                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 781
 782                         for i, unitName in enumerate(self._unitNames):
 783                                 if unitName in self._app.get_hidden_units(self._categoryName):
 784                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 785                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 786                                 else:
 787                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 788                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 789                 else:
 790                         for i in xrange(self._categoryView.topLevelItemCount()):
 791                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 792
 793                         for i in xrange(len(self._unitNames)):
 794                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 795                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 796
 797         @misc_utils.log_exception(_moduleLogger)
 798         def _on_close_window(self, checked = True):
 799                 self.close()
 800
 801         @misc_utils.log_exception(_moduleLogger)
 802         def _on_show_favorites(self, checked = True):
 803                 if checked:
 804                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 805                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 806                                 if catName in self._app.hiddenCategories:
 807                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 808
 809                         for i, unitName in enumerate(self._unitNames):
 810                                 if unitName in self._app.get_hidden_units(self._categoryName):
 811                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 812                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 813                 else:
 814                         for i in xrange(self._categoryView.topLevelItemCount()):
 815                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 816
 817                         for i in xrange(len(self._unitNames)):
 818                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 819                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 820
 821         @misc_utils.log_exception(_moduleLogger)
 822         def _on_choose_category_favorites(self, obj = None):
 823                 assert self._favoritesWindow is None
 824                 self._favoritesWindow = FavoritesWindow(
 825                         self._window,
 826                         self._app,
 827                         unit_data.UNIT_CATEGORIES,
 828                         self._app.hiddenCategories
 829                 )
 830                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 831                 return self._favoritesWindow
 832
 833         @misc_utils.log_exception(_moduleLogger)
 834         def _on_choose_unit_favorites(self, obj = None):
 835                 assert self._favoritesWindow is None
 836                 self._favoritesWindow = FavoritesWindow(
 837                         self._window,
 838                         self._app,
 839                         unit_data.get_units(self._categoryName),
 840                         self._app.get_hidden_units(self._categoryName)
 841                 )
 842                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 843                 return self._favoritesWindow
 844
 845         @misc_utils.log_exception(_moduleLogger)
 846         def _on_close_favorites(self, obj = None):
 847                 self._favoritesWindow = None
 848                 self._update_favorites()
 849
 850         @misc_utils.log_exception(_moduleLogger)
 851         def _on_value_edited(self, *args):
 852                 assert self._categoryName
 853                 assert self._inputUnitName
 854                 assert self._outputUnitName
 855
 856                 userInput = str(self._inputUnitValue.text())
 857                 value = self._sanitize_value(userInput)
 858
 859                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 860                 inputConversion, _, _ = unitData[self._inputUnitName]
 861                 outputConversion, _, _ = unitData[self._outputUnitName]
 862
 863                 func, arg = inputConversion
 864                 base = func.to_base(value, arg)
 865
 866                 func, arg = outputConversion
 867                 newValue = func.from_base(base, arg)
 868                 self._outputUnitValue.setText(str(newValue))
 869
 870         @misc_utils.log_exception(_moduleLogger)
 871         def _on_category_selection_changed(self, selected, deselected):
 872                 selectedNames = [
 873                         str(item.text(0))
 874                         for item in self._categoryView.selectedItems()
 875                 ]
 876                 assert len(selectedNames) == 1
 877                 self.select_category(selectedNames[0])
 878
 879         @misc_utils.log_exception(_moduleLogger)
 880         def _on_input_selection_changed(self, selected, deselected):
 881                 selectedNames = [
 882                         str(item.text(1))
 883                         for item in self._inputView.selectedItems()
 884                 ]
 885                 if selectedNames:
 886                         assert len(selectedNames) == 1
 887                         name = selectedNames[0]
 888                         self.select_input(name)
 889                 else:
 890                         pass
 891
 892         @misc_utils.log_exception(_moduleLogger)
 893         def _on_output_selection_changed(self, selected, deselected):
 894                 selectedNames = [
 895                         str(item.text(1))
 896                         for item in self._outputView.selectedItems()
 897                 ]
 898                 if selectedNames:
 899                         assert len(selectedNames) == 1
 900                         name = selectedNames[0]
 901                         self.select_output(name)
 902                 else:
 903                         pass
 904
 905
 906 class FavoritesWindow(object):
 907
 908         def __init__(self, parent, app, source, hidden):
 909                 self._app = app
 910                 self._source = list(source)
 911                 self._hidden = hidden
 912
 913                 self._categories = QtGui.QTreeWidget()
 914                 self._categories.setHeaderLabels(["Categories"])
 915                 self._categories.setHeaderHidden(True)
 916                 if not IS_MAEMO:
 917                         self._categories.setAlternatingRowColors(True)
 918                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 919                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 920                 self._childWidgets = []
 921                 for catName in self._source:
 922                         twi = QtGui.QTreeWidgetItem(self._categories)
 923                         twi.setText(0, catName)
 924                         self._childWidgets.append(twi)
 925                         if catName not in self._hidden:
 926                                 self._categories.setItemSelected(twi, True)
 927                 self._selection = self._categories.selectionModel()
 928                 self._selection.selectionChanged.connect(self._on_selection_changed)
 929
 930                 self._allButton = QtGui.QPushButton("All")
 931                 self._allButton.clicked.connect(self._on_select_all)
 932                 self._invertButton = QtGui.QPushButton("Invert")
 933                 self._invertButton.clicked.connect(self._on_invert_selection)
 934                 self._noneButton = QtGui.QPushButton("None")
 935                 self._noneButton.clicked.connect(self._on_select_none)
 936
 937                 self._buttonLayout = QtGui.QHBoxLayout()
 938                 self._buttonLayout.addWidget(self._allButton)
 939                 self._buttonLayout.addWidget(self._invertButton)
 940                 self._buttonLayout.addWidget(self._noneButton)
 941
 942                 self._layout = QtGui.QVBoxLayout()
 943                 self._layout.addWidget(self._categories)
 944                 self._layout.addLayout(self._buttonLayout)
 945
 946                 centralWidget = QtGui.QWidget()
 947                 centralWidget.setLayout(self._layout)
 948
 949                 self._window = QtGui.QMainWindow(parent)
 950                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 951                 maeqt.set_autorient(self._window, True)
 952                 maeqt.set_stackable(self._window, True)
 953                 if parent is not None:
 954                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 955                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 956                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 957                 self._window.setCentralWidget(centralWidget)
 958
 959                 self._closeWindowAction = QtGui.QAction(None)
 960                 self._closeWindowAction.setText("Close")
 961                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 962                 self._closeWindowAction.triggered.connect(self._on_close_window)
 963
 964                 if IS_MAEMO:
 965                         self._window.addAction(self._closeWindowAction)
 966                         self._window.addAction(self._app.quitAction)
 967                         self._window.addAction(self._app.fullscreenAction)
 968                 else:
 969                         fileMenu = self._window.menuBar().addMenu("&Units")
 970                         fileMenu.addAction(self._closeWindowAction)
 971                         fileMenu.addAction(self._app.quitAction)
 972
 973                         viewMenu = self._window.menuBar().addMenu("&View")
 974                         viewMenu.addAction(self._app.fullscreenAction)
 975
 976                 self._window.addAction(self._app.logAction)
 977
 978                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 979                 self._window.show()
 980
 981         @property
 982         def window(self):
 983                 return self._window
 984
 985         def show(self):
 986                 self._window.show()
 987
 988         def hide(self):
 989                 self._window.hide()
 990
 991         def close(self):
 992                 self._window.close()
 993
 994         def set_fullscreen(self, isFullscreen):
 995                 if isFullscreen:
 996                         self._window.showFullScreen()
 997                 else:
 998                         self._window.showNormal()
 999
1000         @misc_utils.log_exception(_moduleLogger)
1001         def _on_select_all(self, checked = False):
1002                 for child in self._childWidgets:
1003                         self._categories.setItemSelected(child, True)
1004
1005         @misc_utils.log_exception(_moduleLogger)
1006         def _on_invert_selection(self, checked = False):
1007                 for child in self._childWidgets:
1008                         isSelected = self._categories.isItemSelected(child)
1009                         self._categories.setItemSelected(child, not isSelected)
1010
1011         @misc_utils.log_exception(_moduleLogger)
1012         def _on_select_none(self, checked = False):
1013                 for child in self._childWidgets:
1014                         self._categories.setItemSelected(child, False)
1015
1016         @misc_utils.log_exception(_moduleLogger)
1017         def _on_selection_changed(self, selected, deselected):
1018                 self._hidden.clear()
1019                 selectedNames = set(
1020                         str(item.text(0))
1021                         for item in self._categories.selectedItems()
1022                 )
1023                 for name in self._source:
1024                         if name not in selectedNames:
1025                                 self._hidden.add(name)
1026
1027         @misc_utils.log_exception(_moduleLogger)
1028         def _on_close_window(self, checked = True):
1029                 self.close()
1030
1031
1032 class CategoryWindow(object):
1033
1034         def __init__(self, parent, app):
1035                 self._app = app
1036                 self._unitWindow = None
1037                 self._favoritesWindow = None
1038
1039                 self._categories = QtGui.QTreeWidget()
1040                 self._categories.setHeaderLabels(["Categories"])
1041                 self._categories.itemClicked.connect(self._on_category_clicked)
1042                 self._categories.setHeaderHidden(True)
1043                 if not IS_MAEMO:
1044                         self._categories.setAlternatingRowColors(True)
1045                 for catName in unit_data.UNIT_CATEGORIES:
1046                         twi = QtGui.QTreeWidgetItem(self._categories)
1047                         twi.setText(0, catName)
1048
1049                 self._layout = QtGui.QVBoxLayout()
1050                 self._layout.addWidget(self._categories)
1051
1052                 centralWidget = QtGui.QWidget()
1053                 centralWidget.setLayout(self._layout)
1054
1055                 self._window = QtGui.QMainWindow(parent)
1056                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1057                 maeqt.set_autorient(self._window, True)
1058                 maeqt.set_stackable(self._window, True)
1059                 if parent is not None:
1060                         self._window.setWindowModality(QtCore.Qt.WindowModal)
1061                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
1062                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
1063                 self._window.setCentralWidget(centralWidget)
1064
1065                 self._chooseFavoritesAction = QtGui.QAction(None)
1066                 self._chooseFavoritesAction.setText("Select Favorites")
1067                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1068                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1069
1070                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1071
1072                 self._closeWindowAction = QtGui.QAction(None)
1073                 self._closeWindowAction.setText("Close")
1074                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1075                 self._closeWindowAction.triggered.connect(self._on_close_window)
1076
1077                 if IS_MAEMO:
1078                         fileMenu = self._window.menuBar().addMenu("&Units")
1079                         fileMenu.addAction(self._chooseFavoritesAction)
1080
1081                         viewMenu = self._window.menuBar().addMenu("&View")
1082                         viewMenu.addAction(self._app.showFavoritesAction)
1083                         viewMenu.addAction(self._app.condensedAction)
1084                         viewMenu.addSeparator()
1085                         viewMenu.addAction(self._app.jumpAction)
1086                         viewMenu.addAction(self._app.recentAction)
1087
1088                         self._window.addAction(self._closeWindowAction)
1089                         self._window.addAction(self._app.quitAction)
1090                         self._window.addAction(self._app.fullscreenAction)
1091                 else:
1092                         fileMenu = self._window.menuBar().addMenu("&Units")
1093                         fileMenu.addAction(self._chooseFavoritesAction)
1094                         fileMenu.addAction(self._closeWindowAction)
1095                         fileMenu.addAction(self._app.quitAction)
1096
1097                         viewMenu = self._window.menuBar().addMenu("&View")
1098                         viewMenu.addAction(self._app.showFavoritesAction)
1099                         viewMenu.addAction(self._app.condensedAction)
1100                         viewMenu.addSeparator()
1101                         viewMenu.addAction(self._app.jumpAction)
1102                         viewMenu.addAction(self._app.recentAction)
1103                         viewMenu.addSeparator()
1104                         viewMenu.addAction(self._app.fullscreenAction)
1105
1106                 self._window.addAction(self._app.logAction)
1107
1108                 self._update_favorites()
1109                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1110                 self._window.show()
1111
1112         @property
1113         def window(self):
1114                 return self._window
1115
1116         def walk_children(self):
1117                 if self._unitWindow is not None:
1118                         yield self._unitWindow
1119                 if self._favoritesWindow is not None:
1120                         yield self._favoritesWindow
1121
1122         def show(self):
1123                 for child in self.walk_children():
1124                         child.show()
1125                 self._window.show()
1126
1127         def hide(self):
1128                 for child in self.walk_children():
1129                         child.hide()
1130                 self._window.hide()
1131
1132         def close(self):
1133                 for child in self.walk_children():
1134                         child.close()
1135                 self._window.close()
1136
1137         def select_category(self, categoryName):
1138                 for child in self.walk_children():
1139                         child.close()
1140                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
1141                 self._unitWindow.window.destroyed.connect(self._on_child_close)
1142
1143                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
1144                 rootIndex = self._categories.rootIndex()
1145                 currentIndex = self._categories.model().index(i, 0, rootIndex)
1146                 self._categories.scrollTo(currentIndex)
1147                 return self._unitWindow
1148
1149         def set_fullscreen(self, isFullscreen):
1150                 if isFullscreen:
1151                         self._window.showFullScreen()
1152                 else:
1153                         self._window.showNormal()
1154                 for child in self.walk_children():
1155                         child.set_fullscreen(isFullscreen)
1156
1157         def _update_favorites(self):
1158                 if self._app.showFavoritesAction.isChecked():
1159                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1160                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1161                                 if catName in self._app.hiddenCategories:
1162                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1163                                 else:
1164                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1165                 else:
1166                         for i in xrange(self._categories.topLevelItemCount()):
1167                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1168
1169         @misc_utils.log_exception(_moduleLogger)
1170         def _on_show_favorites(self, checked = True):
1171                 if checked:
1172                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1173                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1174                                 if catName in self._app.hiddenCategories:
1175                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1176                 else:
1177                         for i in xrange(self._categories.topLevelItemCount()):
1178                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1179
1180         @misc_utils.log_exception(_moduleLogger)
1181         def _on_choose_favorites(self, obj = None):
1182                 assert self._favoritesWindow is None
1183                 self._favoritesWindow = FavoritesWindow(
1184                         self._window,
1185                         self._app,
1186                         unit_data.UNIT_CATEGORIES,
1187                         self._app.hiddenCategories
1188                 )
1189                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1190                 return self._favoritesWindow
1191
1192         @misc_utils.log_exception(_moduleLogger)
1193         def _on_close_favorites(self, obj = None):
1194                 self._favoritesWindow = None
1195                 self._update_favorites()
1196
1197         @misc_utils.log_exception(_moduleLogger)
1198         def _on_child_close(self, obj = None):
1199                 self._unitWindow = None
1200
1201         @misc_utils.log_exception(_moduleLogger)
1202         def _on_close_window(self, checked = True):
1203                 self.close()
1204
1205         @misc_utils.log_exception(_moduleLogger)
1206         def _on_category_clicked(self, item, columnIndex):
1207                 categoryName = unicode(item.text(0))
1208                 self.select_category(categoryName)
1209
1210
1211 class UnitData(object):
1212
1213         HEADERS = ["Name", "Value", "", "Unit"]
1214         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1215         NAME_COLUMN = 0
1216         VALUE_COLUMN_0 = 1
1217         VALUE_COLUMN_1 = 2
1218         UNIT_COLUMN = 3
1219
1220         def __init__(self, name, unit, description, conversion):
1221                 self._name = name
1222                 self._unit = unit
1223                 self._description = description
1224                 self._conversion = conversion
1225
1226                 self._value = 0.0
1227                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1228
1229         @property
1230         def name(self):
1231                 return self._name
1232
1233         @property
1234         def value(self):
1235                 return self._value
1236
1237         def update_value(self, newValue):
1238                 self._value = newValue
1239                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1240
1241         @property
1242         def unit(self):
1243                 return self._unit
1244
1245         @property
1246         def conversion(self):
1247                 return self._conversion
1248
1249         def data(self, column):
1250                 try:
1251                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1252                 except IndexError:
1253                         return None
1254
1255
1256 class UnitModel(QtCore.QAbstractItemModel):
1257
1258         def __init__(self, categoryName, parent=None):
1259                 super(UnitModel, self).__init__(parent)
1260                 self._categoryName = categoryName
1261                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1262
1263                 self._children = []
1264                 for key in unit_data.get_units(self._categoryName):
1265                         conversion, unit, description = self._unitData[key]
1266                         self._children.append(UnitData(key, unit, description, conversion))
1267                 self._sortSettings = None
1268
1269         @misc_utils.log_exception(_moduleLogger)
1270         def columnCount(self, parent):
1271                 if parent.isValid():
1272                         return 0
1273                 else:
1274                         return len(UnitData.HEADERS)
1275
1276         @misc_utils.log_exception(_moduleLogger)
1277         def data(self, index, role):
1278                 if not index.isValid():
1279                         return None
1280                 elif role == QtCore.Qt.TextAlignmentRole:
1281                         return UnitData.ALIGNMENT[index.column()]
1282                 elif role != QtCore.Qt.DisplayRole:
1283                         return None
1284
1285                 item = index.internalPointer()
1286                 if isinstance(item, UnitData):
1287                         return item.data(index.column())
1288                 elif item is UnitData.HEADERS:
1289                         return item[index.column()]
1290
1291         @misc_utils.log_exception(_moduleLogger)
1292         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1293                 self._sortSettings = column, order
1294                 isReverse = order == QtCore.Qt.AscendingOrder
1295                 if column == UnitData.NAME_COLUMN:
1296                         key_func = lambda item: item.name
1297                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1298                         key_func = lambda item: item.value
1299                 elif column == UnitData.UNIT_COLUMN:
1300                         key_func = lambda item: item.unit
1301                 self._children.sort(key=key_func, reverse = isReverse)
1302
1303                 self._all_changed()
1304
1305         @misc_utils.log_exception(_moduleLogger)
1306         def flags(self, index):
1307                 if not index.isValid():
1308                         return QtCore.Qt.NoItemFlags
1309
1310                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1311
1312         @misc_utils.log_exception(_moduleLogger)
1313         def headerData(self, section, orientation, role):
1314                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1315                         return UnitData.HEADERS[section]
1316
1317                 return None
1318
1319         @misc_utils.log_exception(_moduleLogger)
1320         def index(self, row, column, parent):
1321                 if not self.hasIndex(row, column, parent):
1322                         return QtCore.QModelIndex()
1323
1324                 if parent.isValid():
1325                         return QtCore.QModelIndex()
1326
1327                 parentItem = UnitData.HEADERS
1328                 childItem = self._children[row]
1329                 if childItem:
1330                         return self.createIndex(row, column, childItem)
1331                 else:
1332                         return QtCore.QModelIndex()
1333
1334         @misc_utils.log_exception(_moduleLogger)
1335         def parent(self, index):
1336                 if not index.isValid():
1337                         return QtCore.QModelIndex()
1338
1339                 childItem = index.internalPointer()
1340                 if isinstance(childItem, UnitData):
1341                         return QtCore.QModelIndex()
1342                 elif childItem is UnitData.HEADERS:
1343                         return None
1344
1345         @misc_utils.log_exception(_moduleLogger)
1346         def rowCount(self, parent):
1347                 if 0 < parent.column():
1348                         return 0
1349
1350                 if not parent.isValid():
1351                         return len(self._children)
1352                 else:
1353                         return len(self._children)
1354
1355         def get_unit(self, index):
1356                 assert 0 <= index
1357                 return self._children[index]
1358
1359         def get_unit_names(self):
1360                 for child in self._children:
1361                         yield child.name
1362
1363         def index_unit(self, unitName):
1364                 for i, child in enumerate(self._children):
1365                         if child.name == unitName:
1366                                 return i
1367                 else:
1368                         raise RuntimeError("Unit not found")
1369
1370         def update_values(self, fromIndex, userInput):
1371                 value = self._sanitize_value(userInput)
1372                 func, arg = self._children[fromIndex].conversion
1373                 base = func.to_base(value, arg)
1374                 for i, child in enumerate(self._children):
1375                         if i == fromIndex:
1376                                 continue
1377                         func, arg = child.conversion
1378                         newValue = func.from_base(base, arg)
1379                         child.update_value(newValue)
1380
1381                 if (
1382                         self._sortSettings is not None and
1383                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1384                 ):
1385                         self.sort(*self._sortSettings)
1386                         self._all_changed()
1387                 else:
1388                         self._values_changed()
1389
1390         def __len__(self):
1391                 return len(self._children)
1392
1393         def _values_changed(self):
1394                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1395                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1396                 self.dataChanged.emit(topLeft, bottomRight)
1397
1398         def _all_changed(self):
1399                 topLeft = self.createIndex(0, 0, self._children[0])
1400                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1401                 self.dataChanged.emit(topLeft, bottomRight)
1402
1403         def _sanitize_value(self, userEntry):
1404                 if self._categoryName == "Computer Numbers":
1405                         if userEntry == '':
1406                                 value = '0'
1407                         else:
1408                                 value = userEntry
1409                 else:
1410                         if userEntry == '':
1411                                 value = 0.0
1412                         else:
1413                                 value = float(userEntry)
1414                 return value
1415
1416
1417 class UnitWindow(object):
1418
1419         def __init__(self, parent, category, app):
1420                 self._app = app
1421                 self._categoryName = category
1422                 self._selectedIndex = 0
1423                 self._favoritesWindow = None
1424
1425                 self._selectedUnitName = QtGui.QLabel()
1426                 self._selectedUnitValue = QtGui.QLineEdit()
1427                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1428                 maeqt.mark_numbers_preferred(self._selectedUnitValue)
1429                 self._selectedUnitSymbol = QtGui.QLabel()
1430
1431                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1432                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1433                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1434                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1435
1436                 self._unitsModel = UnitModel(self._categoryName)
1437                 self._unitsView = QtGui.QTreeView()
1438                 self._unitsView.setModel(self._unitsModel)
1439                 self._unitsView.clicked.connect(self._on_unit_clicked)
1440                 self._unitsView.setUniformRowHeights(True)
1441                 self._unitsView.setSortingEnabled(True)
1442                 self._unitsView.setTextElideMode(QtCore.Qt.ElideNone)
1443                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1444                 if not IS_MAEMO:
1445                         self._unitsView.setAlternatingRowColors(True)
1446                 if True:
1447                         self._unitsView.setHeaderHidden(True)
1448
1449                 viewHeader = self._unitsView.header()
1450                 viewHeader.setSortIndicatorShown(True)
1451                 viewHeader.setClickable(True)
1452
1453                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1454                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1455                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1456                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1457                 viewHeader.setStretchLastSection(False)
1458
1459                 # Trying to make things faster by locking in the initial size of the immutable columns
1460                 nameSize = viewHeader.sectionSize(UnitData.NAME_COLUMN)
1461                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1462                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1463                 unitSize = viewHeader.sectionSize(UnitData.UNIT_COLUMN)
1464                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1465                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1466
1467                 self._layout = QtGui.QVBoxLayout()
1468                 self._layout.addLayout(self._selectedUnitLayout)
1469                 self._layout.addWidget(self._unitsView)
1470
1471                 centralWidget = QtGui.QWidget()
1472                 centralWidget.setLayout(self._layout)
1473
1474                 self._window = QtGui.QMainWindow(parent)
1475                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1476                 maeqt.set_autorient(self._window, True)
1477                 maeqt.set_stackable(self._window, True)
1478                 if parent is not None:
1479                         self._window.setWindowModality(QtCore.Qt.WindowModal)
1480                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1481                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1482                 self._window.setCentralWidget(centralWidget)
1483
1484                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1485                 if defaultUnitName:
1486                         self.select_unit(defaultUnitName)
1487                 else:
1488                         self._select_unit(0)
1489                 self._unitsModel.sort(UnitData.NAME_COLUMN)
1490
1491                 self._sortActionGroup = QtGui.QActionGroup(None)
1492                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
1493                 self._sortByNameAction.setText("Sort By Name")
1494                 self._sortByNameAction.setStatusTip("Sort the units by name")
1495                 self._sortByNameAction.setToolTip("Sort the units by name")
1496                 self._sortByNameAction.setCheckable(True)
1497                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
1498                 self._sortByValueAction.setText("Sort By Value")
1499                 self._sortByValueAction.setStatusTip("Sort the units by value")
1500                 self._sortByValueAction.setToolTip("Sort the units by value")
1501                 self._sortByValueAction.setCheckable(True)
1502                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
1503                 self._sortByUnitAction.setText("Sort By Unit")
1504                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
1505                 self._sortByUnitAction.setToolTip("Sort the units by unit")
1506                 self._sortByUnitAction.setCheckable(True)
1507
1508                 self._sortByValueAction.setChecked(True)
1509
1510                 self._chooseFavoritesAction = QtGui.QAction(None)
1511                 self._chooseFavoritesAction.setText("Select Favorites")
1512                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1513                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1514
1515                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1516
1517                 self._previousUnitAction = QtGui.QAction(None)
1518                 self._previousUnitAction.setText("Previous Unit")
1519                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1520                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1521
1522                 self._nextUnitAction = QtGui.QAction(None)
1523                 self._nextUnitAction.setText("Next Unit")
1524                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1525                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1526
1527                 self._closeWindowAction = QtGui.QAction(None)
1528                 self._closeWindowAction.setText("Close Window")
1529                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1530                 self._closeWindowAction.triggered.connect(self._on_close_window)
1531
1532                 if IS_MAEMO:
1533                         self._window.addAction(self._closeWindowAction)
1534                         self._window.addAction(self._app.quitAction)
1535                         self._window.addAction(self._app.fullscreenAction)
1536
1537                         fileMenu = self._window.menuBar().addMenu("&Units")
1538                         fileMenu.addAction(self._chooseFavoritesAction)
1539
1540                         viewMenu = self._window.menuBar().addMenu("&View")
1541                         viewMenu.addAction(self._app.showFavoritesAction)
1542                         viewMenu.addAction(self._app.condensedAction)
1543                         viewMenu.addSeparator()
1544                         viewMenu.addAction(self._sortByNameAction)
1545                         viewMenu.addAction(self._sortByValueAction)
1546                         viewMenu.addAction(self._sortByUnitAction)
1547                         viewMenu.addSeparator()
1548                         viewMenu.addAction(self._app.jumpAction)
1549                         viewMenu.addAction(self._app.recentAction)
1550                 else:
1551                         fileMenu = self._window.menuBar().addMenu("&Units")
1552                         fileMenu.addAction(self._chooseFavoritesAction)
1553                         fileMenu.addAction(self._closeWindowAction)
1554                         fileMenu.addAction(self._app.quitAction)
1555
1556                         viewMenu = self._window.menuBar().addMenu("&View")
1557                         viewMenu.addAction(self._app.showFavoritesAction)
1558                         viewMenu.addAction(self._app.condensedAction)
1559                         viewMenu.addSeparator()
1560                         viewMenu.addAction(self._sortByNameAction)
1561                         viewMenu.addAction(self._sortByValueAction)
1562                         viewMenu.addAction(self._sortByUnitAction)
1563                         viewMenu.addSeparator()
1564                         viewMenu.addAction(self._app.jumpAction)
1565                         viewMenu.addAction(self._app.recentAction)
1566                         viewMenu.addSeparator()
1567                         viewMenu.addAction(self._app.fullscreenAction)
1568
1569                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1570                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1571                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1572
1573                 self._window.addAction(self._app.logAction)
1574                 self._window.addAction(self._nextUnitAction)
1575                 self._window.addAction(self._previousUnitAction)
1576                 self._window.addAction(self._chooseFavoritesAction)
1577
1578                 self._update_favorites()
1579                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1580                 self._window.show()
1581
1582         @property
1583         def window(self):
1584                 return self._window
1585
1586         def show(self):
1587                 for child in self.walk_children():
1588                         child.hide()
1589                 self._window.show()
1590
1591         def hide(self):
1592                 for child in self.walk_children():
1593                         child.hide()
1594                 self._window.hide()
1595
1596         def close(self):
1597                 for child in self.walk_children():
1598                         child.close()
1599                 self._window.close()
1600
1601         def set_fullscreen(self, isFullscreen):
1602                 if isFullscreen:
1603                         self._window.showFullScreen()
1604                 else:
1605                         self._window.showNormal()
1606
1607         def select_unit(self, unitName):
1608                 index = self._unitsModel.index_unit(unitName)
1609                 self._select_unit(index)
1610
1611         def walk_children(self):
1612                 if self._favoritesWindow is not None:
1613                         yield self._favoritesWindow
1614
1615         def _update_favorites(self, force = False):
1616                 if self._app.showFavoritesAction.isChecked():
1617                         unitNames = list(self._unitsModel.get_unit_names())
1618                         for i, unitName in enumerate(unitNames):
1619                                 if unitName in self._app.get_hidden_units(self._categoryName):
1620                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1621                                 else:
1622                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1623                 else:
1624                         if force:
1625                                 for i in xrange(len(self._unitsModel)):
1626                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1627
1628         @misc_utils.log_exception(_moduleLogger)
1629         def _on_show_favorites(self, checked = True):
1630                 if checked:
1631                         unitNames = list(self._unitsModel.get_unit_names())
1632                         for i, unitName in enumerate(unitNames):
1633                                 if unitName in self._app.get_hidden_units(self._categoryName):
1634                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1635                 else:
1636                         for i in xrange(len(self._unitsModel)):
1637                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1638
1639         @misc_utils.log_exception(_moduleLogger)
1640         def _on_choose_favorites(self, obj = None):
1641                 assert self._favoritesWindow is None
1642                 self._favoritesWindow = FavoritesWindow(
1643                         self._window,
1644                         self._app,
1645                         unit_data.get_units(self._categoryName),
1646                         self._app.get_hidden_units(self._categoryName)
1647                 )
1648                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1649                 return self._favoritesWindow
1650
1651         @misc_utils.log_exception(_moduleLogger)
1652         def _on_close_favorites(self, obj = None):
1653                 self._favoritesWindow = None
1654                 self._update_favorites(force=True)
1655
1656         @misc_utils.log_exception(_moduleLogger)
1657         def _on_previous_unit(self, checked = True):
1658                 self._select_unit(self._selectedIndex - 1)
1659
1660         @misc_utils.log_exception(_moduleLogger)
1661         def _on_next_unit(self, checked = True):
1662                 self._select_unit(self._selectedIndex + 1)
1663
1664         @misc_utils.log_exception(_moduleLogger)
1665         def _on_close_window(self, checked = True):
1666                 self.close()
1667
1668         @misc_utils.log_exception(_moduleLogger)
1669         def _on_sort_by_name(self, checked = False):
1670                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1671
1672         @misc_utils.log_exception(_moduleLogger)
1673         def _on_sort_by_value(self, checked = False):
1674                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1675
1676         @misc_utils.log_exception(_moduleLogger)
1677         def _on_sort_by_unit(self, checked = False):
1678                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1679
1680         @misc_utils.log_exception(_moduleLogger)
1681         def _on_unit_clicked(self, index):
1682                 self._select_unit(index.row())
1683
1684         @misc_utils.log_exception(_moduleLogger)
1685         def _on_value_edited(self, *args):
1686                 userInput = self._selectedUnitValue.text()
1687                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1688                 self._update_favorites()
1689
1690         def _select_unit(self, index):
1691                 unit = self._unitsModel.get_unit(index)
1692                 self._selectedUnitName.setText(unit.name)
1693                 self._selectedUnitValue.setText(str(unit.value))
1694                 self._selectedUnitSymbol.setText(unit.unit)
1695
1696                 self._selectedIndex = index
1697                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1698                 self._unitsView.scrollTo(qindex)
1699                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1700
1701
1702 def run_gonvert():
1703         app = QtGui.QApplication([])
1704         handle = Gonvert(app)
1705         return app.exec_()
1706
1707
1708 if __name__ == "__main__":
1709         logging.basicConfig(level = logging.DEBUG)
1710         try:
1711                 os.makedirs(constants._data_path_)
1712         except OSError, e:
1713                 if e.errno != 17:
1714                         raise
1715
1716         val = run_gonvert()
1717         sys.exit(val)