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                 return self._mainWindow
 155
 156         def search_units(self):
 157                 jumpWindow = QuickJump(None, self)
 158                 jumpWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_jumpWindow", obj))
 159                 self._fake_close_windows()
 160                 self._jumpWindow = jumpWindow
 161                 return self._jumpWindow
 162
 163         def show_recent(self):
 164                 recentWindow = Recent(None, self)
 165                 recentWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_recentWindow", obj))
 166                 self._fake_close_windows()
 167                 self._recentWindow = recentWindow
 168                 return self._recentWindow
 169
 170         def add_recent(self, categoryName, unitName):
 171                 catUnit = categoryName, unitName
 172                 try:
 173                         self._recent.remove(catUnit)
 174                 except ValueError:
 175                         pass # ignore if its not already in the recent history
 176                 assert catUnit not in self._recent
 177                 self._recent.append(catUnit)
 178
 179         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 180                 recentUnitName = ""
 181                 for catName, unitName in reversed(self._recent):
 182                         if catName == categoryName:
 183                                 recentUnitName = unitName
 184                                 if fromMostRecent <= 0:
 185                                         break
 186                                 else:
 187                                         fromMostRecent -= 1
 188                 return recentUnitName
 189
 190         def get_recent(self):
 191                 return reversed(self._recent)
 192
 193         @property
 194         def hiddenCategories(self):
 195                 return self._hiddenCategories
 196
 197         def get_hidden_units(self, categoryName):
 198                 try:
 199                         return self._hiddenUnits[categoryName]
 200                 except KeyError:
 201                         self._hiddenUnits[categoryName] = set()
 202                         return self._hiddenUnits[categoryName]
 203
 204         def load_settings(self):
 205                 try:
 206                         with open(constants._user_settings_, "r") as settingsFile:
 207                                 settings = simplejson.load(settingsFile)
 208                 except IOError, e:
 209                         _moduleLogger.info("No settings")
 210                         settings = {}
 211                 except ValueError:
 212                         _moduleLogger.info("Settings were corrupt")
 213                         settings = {}
 214
 215                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 216
 217                 recent = settings.get("recent", self._recent)
 218                 for category, unit in recent:
 219                         self.add_recent(category, unit)
 220
 221                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 222                 self._hiddenUnits = dict(
 223                         (catName, set(units))
 224                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 225                 )
 226
 227                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 228
 229                 self._condensedAction.setChecked(settings.get("useQuick", self._condensedAction.isChecked()))
 230
 231         def save_settings(self):
 232                 settings = {
 233                         "isFullScreen": self._fullscreenAction.isChecked(),
 234                         "recent": self._recent,
 235                         "hiddenCategories": list(self._hiddenCategories),
 236                         "hiddenUnits": dict(
 237                                 (catName, list(units))
 238                                 for (catName, units) in self._hiddenUnits.iteritems()
 239                         ),
 240                         "showFavorites": self._showFavoritesAction.isChecked(),
 241                         "useQuick": self._condensedAction.isChecked(),
 242                 }
 243                 with open(constants._user_settings_, "w") as settingsFile:
 244                         simplejson.dump(settings, settingsFile)
 245
 246         @property
 247         def appIconPath(self):
 248                 return self._appIconPath
 249
 250         @property
 251         def jumpAction(self):
 252                 return self._jumpAction
 253
 254         @property
 255         def recentAction(self):
 256                 return self._recentAction
 257
 258         @property
 259         def fullscreenAction(self):
 260                 return self._fullscreenAction
 261
 262         @property
 263         def condensedAction(self):
 264                 return self._condensedAction
 265
 266         @property
 267         def logAction(self):
 268                 return self._logAction
 269
 270         @property
 271         def quitAction(self):
 272                 return self._quitAction
 273
 274         @property
 275         def showFavoritesAction(self):
 276                 return self._showFavoritesAction
 277
 278         def _walk_children(self):
 279                 if self._catWindow is not None:
 280                         yield self._catWindow
 281                 if self._quickWindow is not None:
 282                         yield self._quickWindow
 283                 if self._jumpWindow is not None:
 284                         yield self._jumpWindow
 285                 if self._recentWindow is not None:
 286                         yield self._recentWindow
 287
 288         def _fake_close_windows(self):
 289                 if self._catWindow is not None:
 290                         self._catWindow.hide()
 291                 if self._quickWindow is not None:
 292                         self._quickWindow.hide()
 293                 if self._jumpWindow is not None:
 294                         self._jumpWindow.close()
 295                         self._jumpWindow = None
 296                 if self._recentWindow is not None:
 297                         self._recentWindow.close()
 298                         self._recentWindow = None
 299
 300         def _close_windows(self):
 301                 for child in self._walk_children():
 302                         child.close()
 303                 self._catWindow = None
 304                 self._quickWindow = None
 305                 self._jumpWindow = None
 306                 self._recentWindow = None
 307
 308         @misc_utils.log_exception(_moduleLogger)
 309         def _on_app_quit(self, checked = False):
 310                 self.save_settings()
 311
 312         @misc_utils.log_exception(_moduleLogger)
 313         def _on_child_close(self, name, obj = None):
 314                 if not hasattr(self, name):
 315                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 316                         return
 317                 setattr(self, name, None)
 318
 319         @misc_utils.log_exception(_moduleLogger)
 320         def _on_toggle_fullscreen(self, checked = False):
 321                 for window in self._walk_children():
 322                         window.set_fullscreen(checked)
 323
 324         @misc_utils.log_exception(_moduleLogger)
 325         def _on_condensed_start(self, checked = False):
 326                 self.request_category()
 327                 if self._recent:
 328                         self._mainWindow.select_category(self._recent[-1][0])
 329
 330         @misc_utils.log_exception(_moduleLogger)
 331         def _on_jump_start(self, checked = False):
 332                 self.search_units()
 333
 334         @misc_utils.log_exception(_moduleLogger)
 335         def _on_recent_start(self, checked = False):
 336                 self.show_recent()
 337
 338         @misc_utils.log_exception(_moduleLogger)
 339         def _on_log(self, checked = False):
 340                 with open(constants._user_logpath_, "r") as f:
 341                         logLines = f.xreadlines()
 342                         log = "".join(logLines)
 343                         self._clipboard.setText(log)
 344
 345         @misc_utils.log_exception(_moduleLogger)
 346         def _on_quit(self, checked = False):
 347                 self._close_windows()
 348
 349
 350 class QuickJump(object):
 351
 352         MINIMAL_ENTRY = 3
 353
 354         def __init__(self, parent, app):
 355                 self._app = app
 356
 357                 self._searchLabel = QtGui.QLabel("Search:")
 358                 self._searchEntry = QtGui.QLineEdit("")
 359                 self._searchEntry.textEdited.connect(self._on_search_edited)
 360
 361                 self._entryLayout = QtGui.QHBoxLayout()
 362                 self._entryLayout.addWidget(self._searchLabel)
 363                 self._entryLayout.addWidget(self._searchEntry)
 364
 365                 self._resultsBox = QtGui.QTreeWidget()
 366                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 367                 self._resultsBox.setHeaderHidden(True)
 368                 if not IS_MAEMO:
 369                         self._resultsBox.setAlternatingRowColors(True)
 370                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 371
 372                 self._layout = QtGui.QVBoxLayout()
 373                 self._layout.addLayout(self._entryLayout)
 374                 self._layout.addWidget(self._resultsBox)
 375
 376                 centralWidget = QtGui.QWidget()
 377                 centralWidget.setLayout(self._layout)
 378
 379                 self._window = QtGui.QMainWindow(parent)
 380                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 381                 maeqt.set_autorient(self._window, True)
 382                 maeqt.set_stackable(self._window, True)
 383                 if parent is not None:
 384                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 385                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 386                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 387                 self._window.setCentralWidget(centralWidget)
 388
 389                 self._closeWindowAction = QtGui.QAction(None)
 390                 self._closeWindowAction.setText("Close")
 391                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 392                 self._closeWindowAction.triggered.connect(self._on_close_window)
 393
 394                 if IS_MAEMO:
 395                         self._window.addAction(self._closeWindowAction)
 396                         self._window.addAction(self._app.quitAction)
 397                         self._window.addAction(self._app.fullscreenAction)
 398                 else:
 399                         fileMenu = self._window.menuBar().addMenu("&Units")
 400                         fileMenu.addAction(self._closeWindowAction)
 401                         fileMenu.addAction(self._app.quitAction)
 402
 403                         viewMenu = self._window.menuBar().addMenu("&View")
 404                         viewMenu.addAction(self._app.fullscreenAction)
 405
 406                 self._window.addAction(self._app.logAction)
 407
 408                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 409                 self._window.show()
 410
 411         @property
 412         def window(self):
 413                 return self._window
 414
 415         def show(self):
 416                 self._window.show()
 417
 418         def hide(self):
 419                 self._window.hide()
 420
 421         def close(self):
 422                 self._window.close()
 423
 424         def set_fullscreen(self, isFullscreen):
 425                 if isFullscreen:
 426                         self._window.showFullScreen()
 427                 else:
 428                         self._window.showNormal()
 429
 430         @misc_utils.log_exception(_moduleLogger)
 431         def _on_close_window(self, checked = True):
 432                 self.close()
 433
 434         @misc_utils.log_exception(_moduleLogger)
 435         def _on_result_clicked(self, item, columnIndex):
 436                 categoryName = unicode(item.text(0))
 437                 unitName = unicode(item.text(1))
 438                 catWindow = self._app.request_category()
 439                 unitsWindow = catWindow.select_category(categoryName)
 440                 unitsWindow.select_unit(unitName)
 441                 self.close()
 442
 443         @misc_utils.log_exception(_moduleLogger)
 444         def _on_search_edited(self, *args):
 445                 userInput = self._searchEntry.text()
 446                 if len(userInput) <  self.MINIMAL_ENTRY:
 447                         return
 448
 449                 self._resultsBox.clear()
 450                 lowerInput = str(userInput).lower()
 451                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 452                         units = unit_data.get_units(category)
 453                         for unitIndex, unit in enumerate(units):
 454                                 loweredUnit = unit.lower()
 455                                 if lowerInput in loweredUnit:
 456                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 457                                         twi.setText(0, category)
 458                                         twi.setText(1, unit)
 459
 460
 461 class Recent(object):
 462
 463         def __init__(self, parent, app):
 464                 self._app = app
 465
 466                 self._resultsBox = QtGui.QTreeWidget()
 467                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 468                 self._resultsBox.setHeaderHidden(True)
 469                 if not IS_MAEMO:
 470                         self._resultsBox.setAlternatingRowColors(True)
 471                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 472
 473                 self._layout = QtGui.QVBoxLayout()
 474                 self._layout.addWidget(self._resultsBox)
 475
 476                 centralWidget = QtGui.QWidget()
 477                 centralWidget.setLayout(self._layout)
 478
 479                 self._window = QtGui.QMainWindow(parent)
 480                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 481                 maeqt.set_autorient(self._window, True)
 482                 maeqt.set_stackable(self._window, True)
 483                 if parent is not None:
 484                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 485                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 486                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 487                 self._window.setCentralWidget(centralWidget)
 488
 489                 for cat, unit in self._app.get_recent():
 490                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 491                         twi.setText(0, cat)
 492                         twi.setText(1, unit)
 493
 494                 self._closeWindowAction = QtGui.QAction(None)
 495                 self._closeWindowAction.setText("Close")
 496                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 497                 self._closeWindowAction.triggered.connect(self._on_close_window)
 498
 499                 if IS_MAEMO:
 500                         self._window.addAction(self._closeWindowAction)
 501                         self._window.addAction(self._app.quitAction)
 502                         self._window.addAction(self._app.fullscreenAction)
 503                 else:
 504                         fileMenu = self._window.menuBar().addMenu("&Units")
 505                         fileMenu.addAction(self._closeWindowAction)
 506                         fileMenu.addAction(self._app.quitAction)
 507
 508                         viewMenu = self._window.menuBar().addMenu("&View")
 509                         viewMenu.addAction(self._app.fullscreenAction)
 510
 511                 self._window.addAction(self._app.logAction)
 512
 513                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 514                 self._window.show()
 515
 516         @property
 517         def window(self):
 518                 return self._window
 519
 520         def show(self):
 521                 self._window.show()
 522
 523         def hide(self):
 524                 self._window.hide()
 525
 526         def close(self):
 527                 self._window.close()
 528
 529         def set_fullscreen(self, isFullscreen):
 530                 if isFullscreen:
 531                         self._window.showFullScreen()
 532                 else:
 533                         self._window.showNormal()
 534
 535         @misc_utils.log_exception(_moduleLogger)
 536         def _on_close_window(self, checked = True):
 537                 self.close()
 538
 539         @misc_utils.log_exception(_moduleLogger)
 540         def _on_result_clicked(self, item, columnIndex):
 541                 categoryName = unicode(item.text(0))
 542                 unitName = unicode(item.text(1))
 543                 catWindow = self._app.request_category()
 544                 unitsWindow = catWindow.select_category(categoryName)
 545                 unitsWindow.select_unit(unitName)
 546                 self.close()
 547
 548
 549 class QuickConvert(object):
 550
 551         def __init__(self, parent, app):
 552                 self._app = app
 553                 self._categoryName = ""
 554                 self._inputUnitName = ""
 555                 self._outputUnitName = ""
 556                 self._unitNames = []
 557                 self._favoritesWindow = None
 558
 559                 self._inputUnitValue = QtGui.QLineEdit()
 560                 self._inputUnitValue.setInputMethodHints(QtCore.Qt.ImhPreferNumbers)
 561                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 562                 self._inputUnitSymbol = QtGui.QLabel()
 563
 564                 self._outputUnitValue = QtGui.QLabel()
 565                 self._outputUnitSymbol = QtGui.QLabel()
 566
 567                 self._conversionLayout = QtGui.QHBoxLayout()
 568                 self._conversionLayout.addWidget(self._inputUnitValue)
 569                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 570                 self._conversionLayout.addWidget(self._outputUnitValue)
 571                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 572
 573                 self._categoryView = QtGui.QTreeWidget()
 574                 self._categoryView.setHeaderLabels(["Categories"])
 575                 self._categoryView.setHeaderHidden(True)
 576                 if not IS_MAEMO:
 577                         self._categoryView.setAlternatingRowColors(True)
 578                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 579                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 580                 for catName in unit_data.UNIT_CATEGORIES:
 581                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 582                         twi.setText(0, catName)
 583                 self._categorySelection = self._categoryView.selectionModel()
 584                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 585
 586                 self._inputView = QtGui.QTreeWidget()
 587                 self._inputView.setHeaderLabels(["Input", "Name"])
 588                 self._inputView.setHeaderHidden(True)
 589                 self._inputView.header().hideSection(1)
 590                 if not IS_MAEMO:
 591                         self._inputView.setAlternatingRowColors(True)
 592                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 593                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 594                 self._inputSelection = self._inputView.selectionModel()
 595                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 596
 597                 self._outputView = QtGui.QTreeWidget()
 598                 self._outputView.setHeaderLabels(["Output", "Name"])
 599                 self._outputView.setHeaderHidden(True)
 600                 self._outputView.header().hideSection(1)
 601                 if not IS_MAEMO:
 602                         self._outputView.setAlternatingRowColors(True)
 603                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 604                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 605                 self._outputWidgets = []
 606                 self._outputSelection = self._outputView.selectionModel()
 607                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 608
 609                 self._selectionLayout = QtGui.QHBoxLayout()
 610                 self._selectionLayout.addWidget(self._categoryView)
 611                 self._selectionLayout.addWidget(self._inputView)
 612                 self._selectionLayout.addWidget(self._outputView)
 613
 614                 self._layout = QtGui.QVBoxLayout()
 615                 self._layout.addLayout(self._conversionLayout)
 616                 self._layout.addLayout(self._selectionLayout)
 617
 618                 centralWidget = QtGui.QWidget()
 619                 centralWidget.setLayout(self._layout)
 620
 621                 self._window = QtGui.QMainWindow(parent)
 622                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 623                 maeqt.set_autorient(self._window, True)
 624                 maeqt.set_stackable(self._window, True)
 625                 if parent is not None:
 626                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 627                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 628                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 629                 self._window.setCentralWidget(centralWidget)
 630
 631                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 632                 self._chooseCatFavoritesAction.setText("Select Categories")
 633                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 634
 635                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 636                 self._chooseUnitFavoritesAction.setText("Select Units")
 637                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 638
 639                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 640
 641                 self._closeWindowAction = QtGui.QAction(None)
 642                 self._closeWindowAction.setText("Close Window")
 643                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 644                 self._closeWindowAction.triggered.connect(self._on_close_window)
 645
 646                 if IS_MAEMO:
 647                         self._window.addAction(self._closeWindowAction)
 648                         self._window.addAction(self._app.quitAction)
 649                         self._window.addAction(self._app.fullscreenAction)
 650
 651                         fileMenu = self._window.menuBar().addMenu("&Units")
 652                         fileMenu.addAction(self._chooseCatFavoritesAction)
 653                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 654
 655                         viewMenu = self._window.menuBar().addMenu("&View")
 656                         viewMenu.addAction(self._app.showFavoritesAction)
 657                         viewMenu.addAction(self._app.condensedAction)
 658                         viewMenu.addSeparator()
 659                         viewMenu.addAction(self._app.jumpAction)
 660                         viewMenu.addAction(self._app.recentAction)
 661                 else:
 662                         fileMenu = self._window.menuBar().addMenu("&Units")
 663                         fileMenu.addAction(self._chooseCatFavoritesAction)
 664                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 665                         fileMenu.addAction(self._closeWindowAction)
 666                         fileMenu.addAction(self._app.quitAction)
 667
 668                         viewMenu = self._window.menuBar().addMenu("&View")
 669                         viewMenu.addAction(self._app.showFavoritesAction)
 670                         viewMenu.addAction(self._app.condensedAction)
 671                         viewMenu.addSeparator()
 672                         viewMenu.addAction(self._app.jumpAction)
 673                         viewMenu.addAction(self._app.recentAction)
 674                         viewMenu.addSeparator()
 675                         viewMenu.addAction(self._app.fullscreenAction)
 676
 677                 self._window.addAction(self._app.logAction)
 678
 679                 self._update_favorites()
 680                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 681                 self._window.show()
 682
 683         @property
 684         def window(self):
 685                 return self._window
 686
 687         def show(self):
 688                 self._window.show()
 689
 690         def hide(self):
 691                 self._window.hide()
 692
 693         def close(self):
 694                 self._window.close()
 695
 696         def set_fullscreen(self, isFullscreen):
 697                 if isFullscreen:
 698                         self._window.showFullScreen()
 699                 else:
 700                         self._window.showNormal()
 701
 702         def select_category(self, categoryName):
 703                 self._inputUnitValue.setText("")
 704                 self._inputView.clear()
 705                 self._outputView.clear()
 706                 self._categoryName = categoryName
 707
 708                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 709                 self._unitNames = list(unit_data.get_units(categoryName))
 710                 self._unitNames.sort()
 711                 for key in self._unitNames:
 712                         conversion, unit, description = unitData[key]
 713                         if not unit:
 714                                 unit = key
 715
 716                         twi = QtGui.QTreeWidgetItem(self._inputView)
 717                         twi.setText(0, unit)
 718                         twi.setText(1, key)
 719
 720                         twi = QtGui.QTreeWidgetItem(self._outputView)
 721                         twi.setText(0, unit)
 722                         twi.setText(1, key)
 723
 724                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 725                 rootIndex = self._categoryView.rootIndex()
 726                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 727                 self._categoryView.scrollTo(currentIndex)
 728
 729                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 730                 if defaultInputUnitName:
 731                         self.select_input(defaultInputUnitName)
 732                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 733                         assert defaultOutputUnitName
 734                         self.select_output(defaultOutputUnitName)
 735
 736                 return self
 737
 738         def select_unit(self, name):
 739                 self.select_input(name)
 740
 741         def select_input(self, name):
 742                 self._app.add_recent(self._categoryName, name)
 743                 self._inputUnitName = name
 744
 745                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 746                 conversion, unit, description = unitData[name]
 747
 748                 self._inputUnitSymbol.setText(unit if unit else name)
 749
 750                 i = self._unitNames.index(name)
 751                 rootIndex = self._inputView.rootIndex()
 752                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 753                 self._inputView.scrollTo(currentIndex)
 754
 755         def select_output(self, name):
 756                 # Add the output to recent but don't make things weird by making it the most recent
 757                 self._app.add_recent(self._categoryName, name)
 758                 self._app.add_recent(self._categoryName, self._inputUnitName)
 759                 self._outputUnitName = name
 760
 761                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 762                 conversion, unit, description = unitData[name]
 763
 764                 self._outputUnitSymbol.setText(unit if unit else name)
 765
 766                 i = self._unitNames.index(name)
 767                 rootIndex = self._outputView.rootIndex()
 768                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 769                 self._outputView.scrollTo(currentIndex)
 770
 771         def _sanitize_value(self, userEntry):
 772                 if self._categoryName == "Computer Numbers":
 773                         if userEntry == '':
 774                                 value = '0'
 775                         else:
 776                                 value = userEntry
 777                 else:
 778                         if userEntry == '':
 779                                 value = 0.0
 780                         else:
 781                                 value = float(userEntry)
 782                 return value
 783
 784         def _update_favorites(self):
 785                 if self._app.showFavoritesAction.isChecked():
 786                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 787                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 788                                 if catName in self._app.hiddenCategories:
 789                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 790                                 else:
 791                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 792
 793                         for i, unitName in enumerate(self._unitNames):
 794                                 if unitName in self._app.get_hidden_units(self._categoryName):
 795                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 796                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 797                                 else:
 798                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 799                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 800                 else:
 801                         for i in xrange(self._categoryView.topLevelItemCount()):
 802                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 803
 804                         for i in xrange(len(self._unitNames)):
 805                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 806                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 807
 808         @misc_utils.log_exception(_moduleLogger)
 809         def _on_close_window(self, checked = True):
 810                 self.close()
 811
 812         @misc_utils.log_exception(_moduleLogger)
 813         def _on_show_favorites(self, checked = True):
 814                 if checked:
 815                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 816                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 817                                 if catName in self._app.hiddenCategories:
 818                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 819
 820                         for i, unitName in enumerate(self._unitNames):
 821                                 if unitName in self._app.get_hidden_units(self._categoryName):
 822                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 823                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 824                 else:
 825                         for i in xrange(self._categoryView.topLevelItemCount()):
 826                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 827
 828                         for i in xrange(len(self._unitNames)):
 829                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 830                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 831
 832         @misc_utils.log_exception(_moduleLogger)
 833         def _on_choose_category_favorites(self, obj = None):
 834                 assert self._favoritesWindow is None
 835                 self._favoritesWindow = FavoritesWindow(
 836                         self._window,
 837                         self._app,
 838                         unit_data.UNIT_CATEGORIES,
 839                         self._app.hiddenCategories
 840                 )
 841                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 842                 return self._favoritesWindow
 843
 844         @misc_utils.log_exception(_moduleLogger)
 845         def _on_choose_unit_favorites(self, obj = None):
 846                 assert self._favoritesWindow is None
 847                 self._favoritesWindow = FavoritesWindow(
 848                         self._window,
 849                         self._app,
 850                         unit_data.get_units(self._categoryName),
 851                         self._app.get_hidden_units(self._categoryName)
 852                 )
 853                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 854                 return self._favoritesWindow
 855
 856         @misc_utils.log_exception(_moduleLogger)
 857         def _on_close_favorites(self, obj = None):
 858                 self._favoritesWindow = None
 859                 self._update_favorites()
 860
 861         @misc_utils.log_exception(_moduleLogger)
 862         def _on_value_edited(self, *args):
 863                 assert self._categoryName
 864                 assert self._inputUnitName
 865                 assert self._outputUnitName
 866
 867                 userInput = str(self._inputUnitValue.text())
 868                 value = self._sanitize_value(userInput)
 869
 870                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 871                 inputConversion, _, _ = unitData[self._inputUnitName]
 872                 outputConversion, _, _ = unitData[self._outputUnitName]
 873
 874                 func, arg = inputConversion
 875                 base = func.to_base(value, arg)
 876
 877                 func, arg = outputConversion
 878                 newValue = func.from_base(base, arg)
 879                 self._outputUnitValue.setText(str(newValue))
 880
 881         @misc_utils.log_exception(_moduleLogger)
 882         def _on_category_selection_changed(self, selected, deselected):
 883                 selectedNames = [
 884                         str(item.text(0))
 885                         for item in self._categoryView.selectedItems()
 886                 ]
 887                 assert len(selectedNames) == 1
 888                 self.select_category(selectedNames[0])
 889
 890         @misc_utils.log_exception(_moduleLogger)
 891         def _on_input_selection_changed(self, selected, deselected):
 892                 selectedNames = [
 893                         str(item.text(1))
 894                         for item in self._inputView.selectedItems()
 895                 ]
 896                 if selectedNames:
 897                         assert len(selectedNames) == 1
 898                         name = selectedNames[0]
 899                         self.select_input(name)
 900                 else:
 901                         pass
 902
 903         @misc_utils.log_exception(_moduleLogger)
 904         def _on_output_selection_changed(self, selected, deselected):
 905                 selectedNames = [
 906                         str(item.text(1))
 907                         for item in self._outputView.selectedItems()
 908                 ]
 909                 if selectedNames:
 910                         assert len(selectedNames) == 1
 911                         name = selectedNames[0]
 912                         self.select_output(name)
 913                 else:
 914                         pass
 915
 916
 917 class FavoritesWindow(object):
 918
 919         def __init__(self, parent, app, source, hidden):
 920                 self._app = app
 921                 self._source = list(source)
 922                 self._hidden = hidden
 923
 924                 self._categories = QtGui.QTreeWidget()
 925                 self._categories.setHeaderLabels(["Categories"])
 926                 self._categories.setHeaderHidden(True)
 927                 if not IS_MAEMO:
 928                         self._categories.setAlternatingRowColors(True)
 929                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 930                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 931                 self._childWidgets = []
 932                 for catName in self._source:
 933                         twi = QtGui.QTreeWidgetItem(self._categories)
 934                         twi.setText(0, catName)
 935                         self._childWidgets.append(twi)
 936                         if catName not in self._hidden:
 937                                 self._categories.setItemSelected(twi, True)
 938                 self._selection = self._categories.selectionModel()
 939                 self._selection.selectionChanged.connect(self._on_selection_changed)
 940
 941                 self._allButton = QtGui.QPushButton("All")
 942                 self._allButton.clicked.connect(self._on_select_all)
 943                 self._invertButton = QtGui.QPushButton("Invert")
 944                 self._invertButton.clicked.connect(self._on_invert_selection)
 945                 self._noneButton = QtGui.QPushButton("None")
 946                 self._noneButton.clicked.connect(self._on_select_none)
 947
 948                 self._buttonLayout = QtGui.QHBoxLayout()
 949                 self._buttonLayout.addWidget(self._allButton)
 950                 self._buttonLayout.addWidget(self._invertButton)
 951                 self._buttonLayout.addWidget(self._noneButton)
 952
 953                 self._layout = QtGui.QVBoxLayout()
 954                 self._layout.addWidget(self._categories)
 955                 self._layout.addLayout(self._buttonLayout)
 956
 957                 centralWidget = QtGui.QWidget()
 958                 centralWidget.setLayout(self._layout)
 959
 960                 self._window = QtGui.QMainWindow(parent)
 961                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 962                 maeqt.set_autorient(self._window, True)
 963                 maeqt.set_stackable(self._window, True)
 964                 if parent is not None:
 965                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 966                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 967                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 968                 self._window.setCentralWidget(centralWidget)
 969
 970                 self._closeWindowAction = QtGui.QAction(None)
 971                 self._closeWindowAction.setText("Close")
 972                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 973                 self._closeWindowAction.triggered.connect(self._on_close_window)
 974
 975                 if IS_MAEMO:
 976                         self._window.addAction(self._closeWindowAction)
 977                         self._window.addAction(self._app.quitAction)
 978                         self._window.addAction(self._app.fullscreenAction)
 979                 else:
 980                         fileMenu = self._window.menuBar().addMenu("&Units")
 981                         fileMenu.addAction(self._closeWindowAction)
 982                         fileMenu.addAction(self._app.quitAction)
 983
 984                         viewMenu = self._window.menuBar().addMenu("&View")
 985                         viewMenu.addAction(self._app.fullscreenAction)
 986
 987                 self._window.addAction(self._app.logAction)
 988
 989                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 990                 self._window.show()
 991
 992         @property
 993         def window(self):
 994                 return self._window
 995
 996         def show(self):
 997                 self._window.show()
 998
 999         def hide(self):
1000                 self._window.hide()
1001
1002         def close(self):
1003                 self._window.close()
1004
1005         def set_fullscreen(self, isFullscreen):
1006                 if isFullscreen:
1007                         self._window.showFullScreen()
1008                 else:
1009                         self._window.showNormal()
1010
1011         @misc_utils.log_exception(_moduleLogger)
1012         def _on_select_all(self, checked = False):
1013                 for child in self._childWidgets:
1014                         self._categories.setItemSelected(child, True)
1015
1016         @misc_utils.log_exception(_moduleLogger)
1017         def _on_invert_selection(self, checked = False):
1018                 for child in self._childWidgets:
1019                         isSelected = self._categories.isItemSelected(child)
1020                         self._categories.setItemSelected(child, not isSelected)
1021
1022         @misc_utils.log_exception(_moduleLogger)
1023         def _on_select_none(self, checked = False):
1024                 for child in self._childWidgets:
1025                         self._categories.setItemSelected(child, False)
1026
1027         @misc_utils.log_exception(_moduleLogger)
1028         def _on_selection_changed(self, selected, deselected):
1029                 self._hidden.clear()
1030                 selectedNames = set(
1031                         str(item.text(0))
1032                         for item in self._categories.selectedItems()
1033                 )
1034                 for name in self._source:
1035                         if name not in selectedNames:
1036                                 self._hidden.add(name)
1037
1038         @misc_utils.log_exception(_moduleLogger)
1039         def _on_close_window(self, checked = True):
1040                 self.close()
1041
1042
1043 class CategoryWindow(object):
1044
1045         def __init__(self, parent, app):
1046                 self._app = app
1047                 self._unitWindow = None
1048                 self._favoritesWindow = None
1049
1050                 self._categories = QtGui.QTreeWidget()
1051                 self._categories.setHeaderLabels(["Categories"])
1052                 self._categories.itemClicked.connect(self._on_category_clicked)
1053                 self._categories.setHeaderHidden(True)
1054                 if not IS_MAEMO:
1055                         self._categories.setAlternatingRowColors(True)
1056                 for catName in unit_data.UNIT_CATEGORIES:
1057                         twi = QtGui.QTreeWidgetItem(self._categories)
1058                         twi.setText(0, catName)
1059
1060                 self._layout = QtGui.QVBoxLayout()
1061                 self._layout.addWidget(self._categories)
1062
1063                 centralWidget = QtGui.QWidget()
1064                 centralWidget.setLayout(self._layout)
1065
1066                 self._window = QtGui.QMainWindow(parent)
1067                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1068                 maeqt.set_autorient(self._window, True)
1069                 maeqt.set_stackable(self._window, True)
1070                 if parent is not None:
1071                         self._window.setWindowModality(QtCore.Qt.WindowModal)
1072                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
1073                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
1074                 self._window.setCentralWidget(centralWidget)
1075
1076                 self._chooseFavoritesAction = QtGui.QAction(None)
1077                 self._chooseFavoritesAction.setText("Select Favorites")
1078                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1079                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1080
1081                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1082
1083                 self._closeWindowAction = QtGui.QAction(None)
1084                 self._closeWindowAction.setText("Close")
1085                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1086                 self._closeWindowAction.triggered.connect(self._on_close_window)
1087
1088                 if IS_MAEMO:
1089                         fileMenu = self._window.menuBar().addMenu("&Units")
1090                         fileMenu.addAction(self._chooseFavoritesAction)
1091
1092                         viewMenu = self._window.menuBar().addMenu("&View")
1093                         viewMenu.addAction(self._app.showFavoritesAction)
1094                         viewMenu.addAction(self._app.condensedAction)
1095                         viewMenu.addSeparator()
1096                         viewMenu.addAction(self._app.jumpAction)
1097                         viewMenu.addAction(self._app.recentAction)
1098
1099                         self._window.addAction(self._closeWindowAction)
1100                         self._window.addAction(self._app.quitAction)
1101                         self._window.addAction(self._app.fullscreenAction)
1102                 else:
1103                         fileMenu = self._window.menuBar().addMenu("&Units")
1104                         fileMenu.addAction(self._chooseFavoritesAction)
1105                         fileMenu.addAction(self._closeWindowAction)
1106                         fileMenu.addAction(self._app.quitAction)
1107
1108                         viewMenu = self._window.menuBar().addMenu("&View")
1109                         viewMenu.addAction(self._app.showFavoritesAction)
1110                         viewMenu.addAction(self._app.condensedAction)
1111                         viewMenu.addSeparator()
1112                         viewMenu.addAction(self._app.jumpAction)
1113                         viewMenu.addAction(self._app.recentAction)
1114                         viewMenu.addSeparator()
1115                         viewMenu.addAction(self._app.fullscreenAction)
1116
1117                 self._window.addAction(self._app.logAction)
1118
1119                 self._update_favorites()
1120                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1121                 self._window.show()
1122
1123         @property
1124         def window(self):
1125                 return self._window
1126
1127         def walk_children(self):
1128                 if self._unitWindow is not None:
1129                         yield self._unitWindow
1130                 if self._favoritesWindow is not None:
1131                         yield self._favoritesWindow
1132
1133         def show(self):
1134                 for child in self.walk_children():
1135                         child.show()
1136                 self._window.show()
1137
1138         def hide(self):
1139                 for child in self.walk_children():
1140                         child.hide()
1141                 self._window.hide()
1142
1143         def close(self):
1144                 for child in self.walk_children():
1145                         child.window.destroyed.disconnect(self._on_child_close)
1146                         child.close()
1147                 self._window.close()
1148
1149         def select_category(self, categoryName):
1150                 for child in self.walk_children():
1151                         child.window.destroyed.disconnect(self._on_child_close)
1152                         child.close()
1153                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
1154                 self._unitWindow.window.destroyed.connect(self._on_child_close)
1155
1156                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
1157                 rootIndex = self._categories.rootIndex()
1158                 currentIndex = self._categories.model().index(i, 0, rootIndex)
1159                 self._categories.scrollTo(currentIndex)
1160                 return self._unitWindow
1161
1162         def set_fullscreen(self, isFullscreen):
1163                 if isFullscreen:
1164                         self._window.showFullScreen()
1165                 else:
1166                         self._window.showNormal()
1167                 for child in self.walk_children():
1168                         child.set_fullscreen(isFullscreen)
1169
1170         def _update_favorites(self):
1171                 if self._app.showFavoritesAction.isChecked():
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                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1178                 else:
1179                         for i in xrange(self._categories.topLevelItemCount()):
1180                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1181
1182         @misc_utils.log_exception(_moduleLogger)
1183         def _on_show_favorites(self, checked = True):
1184                 if checked:
1185                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1186                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1187                                 if catName in self._app.hiddenCategories:
1188                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1189                 else:
1190                         for i in xrange(self._categories.topLevelItemCount()):
1191                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1192
1193         @misc_utils.log_exception(_moduleLogger)
1194         def _on_choose_favorites(self, obj = None):
1195                 assert self._favoritesWindow is None
1196                 self._favoritesWindow = FavoritesWindow(
1197                         self._window,
1198                         self._app,
1199                         unit_data.UNIT_CATEGORIES,
1200                         self._app.hiddenCategories
1201                 )
1202                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1203                 return self._favoritesWindow
1204
1205         @misc_utils.log_exception(_moduleLogger)
1206         def _on_close_favorites(self, obj = None):
1207                 self._favoritesWindow = None
1208                 self._update_favorites()
1209
1210         @misc_utils.log_exception(_moduleLogger)
1211         def _on_child_close(self, obj = None):
1212                 self._unitWindow = None
1213
1214         @misc_utils.log_exception(_moduleLogger)
1215         def _on_close_window(self, checked = True):
1216                 self.close()
1217
1218         @misc_utils.log_exception(_moduleLogger)
1219         def _on_category_clicked(self, item, columnIndex):
1220                 categoryName = unicode(item.text(0))
1221                 self.select_category(categoryName)
1222
1223
1224 class UnitData(object):
1225
1226         HEADERS = ["Name", "Value", "", "Unit"]
1227         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1228         NAME_COLUMN = 0
1229         VALUE_COLUMN_0 = 1
1230         VALUE_COLUMN_1 = 2
1231         UNIT_COLUMN = 3
1232
1233         def __init__(self, name, unit, description, conversion):
1234                 self._name = name
1235                 self._unit = unit
1236                 self._description = description
1237                 self._conversion = conversion
1238
1239                 self._value = 0.0
1240                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1241
1242         @property
1243         def name(self):
1244                 return self._name
1245
1246         @property
1247         def value(self):
1248                 return self._value
1249
1250         def update_value(self, newValue):
1251                 self._value = newValue
1252                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1253
1254         @property
1255         def unit(self):
1256                 return self._unit
1257
1258         @property
1259         def conversion(self):
1260                 return self._conversion
1261
1262         def data(self, column):
1263                 try:
1264                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1265                 except IndexError:
1266                         return None
1267
1268
1269 class UnitModel(QtCore.QAbstractItemModel):
1270
1271         def __init__(self, categoryName, parent=None):
1272                 super(UnitModel, self).__init__(parent)
1273                 self._categoryName = categoryName
1274                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1275
1276                 self._children = []
1277                 for key in unit_data.get_units(self._categoryName):
1278                         conversion, unit, description = self._unitData[key]
1279                         self._children.append(UnitData(key, unit, description, conversion))
1280                 self._sortSettings = None
1281
1282         @misc_utils.log_exception(_moduleLogger)
1283         def columnCount(self, parent):
1284                 if parent.isValid():
1285                         return 0
1286                 else:
1287                         return len(UnitData.HEADERS)
1288
1289         @misc_utils.log_exception(_moduleLogger)
1290         def data(self, index, role):
1291                 if not index.isValid():
1292                         return None
1293                 elif role == QtCore.Qt.TextAlignmentRole:
1294                         return UnitData.ALIGNMENT[index.column()]
1295                 elif role != QtCore.Qt.DisplayRole:
1296                         return None
1297
1298                 item = index.internalPointer()
1299                 if isinstance(item, UnitData):
1300                         return item.data(index.column())
1301                 elif item is UnitData.HEADERS:
1302                         return item[index.column()]
1303
1304         @misc_utils.log_exception(_moduleLogger)
1305         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1306                 self._sortSettings = column, order
1307                 isReverse = order == QtCore.Qt.AscendingOrder
1308                 if column == UnitData.NAME_COLUMN:
1309                         key_func = lambda item: item.name
1310                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1311                         key_func = lambda item: item.value
1312                 elif column == UnitData.UNIT_COLUMN:
1313                         key_func = lambda item: item.unit
1314                 self._children.sort(key=key_func, reverse = isReverse)
1315
1316                 self._all_changed()
1317
1318         @misc_utils.log_exception(_moduleLogger)
1319         def flags(self, index):
1320                 if not index.isValid():
1321                         return QtCore.Qt.NoItemFlags
1322
1323                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1324
1325         @misc_utils.log_exception(_moduleLogger)
1326         def headerData(self, section, orientation, role):
1327                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1328                         return UnitData.HEADERS[section]
1329
1330                 return None
1331
1332         @misc_utils.log_exception(_moduleLogger)
1333         def index(self, row, column, parent):
1334                 if not self.hasIndex(row, column, parent):
1335                         return QtCore.QModelIndex()
1336
1337                 if parent.isValid():
1338                         return QtCore.QModelIndex()
1339
1340                 parentItem = UnitData.HEADERS
1341                 childItem = self._children[row]
1342                 if childItem:
1343                         return self.createIndex(row, column, childItem)
1344                 else:
1345                         return QtCore.QModelIndex()
1346
1347         @misc_utils.log_exception(_moduleLogger)
1348         def parent(self, index):
1349                 if not index.isValid():
1350                         return QtCore.QModelIndex()
1351
1352                 childItem = index.internalPointer()
1353                 if isinstance(childItem, UnitData):
1354                         return QtCore.QModelIndex()
1355                 elif childItem is UnitData.HEADERS:
1356                         return None
1357
1358         @misc_utils.log_exception(_moduleLogger)
1359         def rowCount(self, parent):
1360                 if 0 < parent.column():
1361                         return 0
1362
1363                 if not parent.isValid():
1364                         return len(self._children)
1365                 else:
1366                         return len(self._children)
1367
1368         def get_unit(self, index):
1369                 assert 0 <= index
1370                 return self._children[index]
1371
1372         def get_unit_names(self):
1373                 for child in self._children:
1374                         yield child.name
1375
1376         def index_unit(self, unitName):
1377                 for i, child in enumerate(self._children):
1378                         if child.name == unitName:
1379                                 return i
1380                 else:
1381                         raise RuntimeError("Unit not found")
1382
1383         def update_values(self, fromIndex, userInput):
1384                 value = self._sanitize_value(userInput)
1385                 func, arg = self._children[fromIndex].conversion
1386                 base = func.to_base(value, arg)
1387                 for i, child in enumerate(self._children):
1388                         if i == fromIndex:
1389                                 continue
1390                         func, arg = child.conversion
1391                         newValue = func.from_base(base, arg)
1392                         child.update_value(newValue)
1393
1394                 if (
1395                         self._sortSettings is not None and
1396                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1397                 ):
1398                         self.sort(*self._sortSettings)
1399                         self._all_changed()
1400                 else:
1401                         self._values_changed()
1402
1403         def __len__(self):
1404                 return len(self._children)
1405
1406         def _values_changed(self):
1407                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1408                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1409                 self.dataChanged.emit(topLeft, bottomRight)
1410
1411         def _all_changed(self):
1412                 topLeft = self.createIndex(0, 0, self._children[0])
1413                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1414                 self.dataChanged.emit(topLeft, bottomRight)
1415
1416         def _sanitize_value(self, userEntry):
1417                 if self._categoryName == "Computer Numbers":
1418                         if userEntry == '':
1419                                 value = '0'
1420                         else:
1421                                 value = userEntry
1422                 else:
1423                         if userEntry == '':
1424                                 value = 0.0
1425                         else:
1426                                 value = float(userEntry)
1427                 return value
1428
1429
1430 class UnitWindow(object):
1431
1432         def __init__(self, parent, category, app):
1433                 self._app = app
1434                 self._categoryName = category
1435                 self._selectedIndex = 0
1436                 self._favoritesWindow = None
1437
1438                 self._selectedUnitName = QtGui.QLabel()
1439                 self._selectedUnitValue = QtGui.QLineEdit()
1440                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1441                 maeqt.mark_numbers_preferred(self._selectedUnitValue)
1442                 self._selectedUnitSymbol = QtGui.QLabel()
1443
1444                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1445                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1446                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1447                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1448
1449                 self._unitsModel = UnitModel(self._categoryName)
1450                 self._unitsView = QtGui.QTreeView()
1451                 self._unitsView.setModel(self._unitsModel)
1452                 self._unitsView.clicked.connect(self._on_unit_clicked)
1453                 self._unitsView.setUniformRowHeights(True)
1454                 self._unitsView.setSortingEnabled(True)
1455                 self._unitsView.setTextElideMode(QtCore.Qt.ElideNone)
1456                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1457                 if not IS_MAEMO:
1458                         self._unitsView.setAlternatingRowColors(True)
1459                 if True:
1460                         self._unitsView.setHeaderHidden(True)
1461
1462                 viewHeader = self._unitsView.header()
1463                 viewHeader.setSortIndicatorShown(True)
1464                 viewHeader.setClickable(True)
1465
1466                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1467                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1468                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1469                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1470                 viewHeader.setStretchLastSection(False)
1471
1472                 # Trying to make things faster by locking in the initial size of the immutable columns
1473                 nameSize = viewHeader.sectionSize(UnitData.NAME_COLUMN)
1474                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1475                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1476                 unitSize = viewHeader.sectionSize(UnitData.UNIT_COLUMN)
1477                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1478                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1479
1480                 self._layout = QtGui.QVBoxLayout()
1481                 self._layout.addLayout(self._selectedUnitLayout)
1482                 self._layout.addWidget(self._unitsView)
1483
1484                 centralWidget = QtGui.QWidget()
1485                 centralWidget.setLayout(self._layout)
1486
1487                 self._window = QtGui.QMainWindow(parent)
1488                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1489                 maeqt.set_autorient(self._window, True)
1490                 maeqt.set_stackable(self._window, True)
1491                 if parent is not None:
1492                         self._window.setWindowModality(QtCore.Qt.WindowModal)
1493                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1494                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1495                 self._window.setCentralWidget(centralWidget)
1496
1497                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1498                 if defaultUnitName:
1499                         self.select_unit(defaultUnitName)
1500                 else:
1501                         self._select_unit(0)
1502                 self._unitsModel.sort(UnitData.NAME_COLUMN)
1503
1504                 self._sortActionGroup = QtGui.QActionGroup(None)
1505                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
1506                 self._sortByNameAction.setText("Sort By Name")
1507                 self._sortByNameAction.setStatusTip("Sort the units by name")
1508                 self._sortByNameAction.setToolTip("Sort the units by name")
1509                 self._sortByNameAction.setCheckable(True)
1510                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
1511                 self._sortByValueAction.setText("Sort By Value")
1512                 self._sortByValueAction.setStatusTip("Sort the units by value")
1513                 self._sortByValueAction.setToolTip("Sort the units by value")
1514                 self._sortByValueAction.setCheckable(True)
1515                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
1516                 self._sortByUnitAction.setText("Sort By Unit")
1517                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
1518                 self._sortByUnitAction.setToolTip("Sort the units by unit")
1519                 self._sortByUnitAction.setCheckable(True)
1520
1521                 self._sortByValueAction.setChecked(True)
1522
1523                 self._chooseFavoritesAction = QtGui.QAction(None)
1524                 self._chooseFavoritesAction.setText("Select Favorites")
1525                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1526                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1527
1528                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1529
1530                 self._previousUnitAction = QtGui.QAction(None)
1531                 self._previousUnitAction.setText("Previous Unit")
1532                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1533                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1534
1535                 self._nextUnitAction = QtGui.QAction(None)
1536                 self._nextUnitAction.setText("Next Unit")
1537                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1538                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1539
1540                 self._closeWindowAction = QtGui.QAction(None)
1541                 self._closeWindowAction.setText("Close Window")
1542                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1543                 self._closeWindowAction.triggered.connect(self._on_close_window)
1544
1545                 if IS_MAEMO:
1546                         self._window.addAction(self._closeWindowAction)
1547                         self._window.addAction(self._app.quitAction)
1548                         self._window.addAction(self._app.fullscreenAction)
1549
1550                         fileMenu = self._window.menuBar().addMenu("&Units")
1551                         fileMenu.addAction(self._chooseFavoritesAction)
1552
1553                         viewMenu = self._window.menuBar().addMenu("&View")
1554                         viewMenu.addAction(self._app.showFavoritesAction)
1555                         viewMenu.addAction(self._app.condensedAction)
1556                         viewMenu.addSeparator()
1557                         viewMenu.addAction(self._sortByNameAction)
1558                         viewMenu.addAction(self._sortByValueAction)
1559                         viewMenu.addAction(self._sortByUnitAction)
1560                         viewMenu.addSeparator()
1561                         viewMenu.addAction(self._app.jumpAction)
1562                         viewMenu.addAction(self._app.recentAction)
1563                 else:
1564                         fileMenu = self._window.menuBar().addMenu("&Units")
1565                         fileMenu.addAction(self._chooseFavoritesAction)
1566                         fileMenu.addAction(self._closeWindowAction)
1567                         fileMenu.addAction(self._app.quitAction)
1568
1569                         viewMenu = self._window.menuBar().addMenu("&View")
1570                         viewMenu.addAction(self._app.showFavoritesAction)
1571                         viewMenu.addAction(self._app.condensedAction)
1572                         viewMenu.addSeparator()
1573                         viewMenu.addAction(self._sortByNameAction)
1574                         viewMenu.addAction(self._sortByValueAction)
1575                         viewMenu.addAction(self._sortByUnitAction)
1576                         viewMenu.addSeparator()
1577                         viewMenu.addAction(self._app.jumpAction)
1578                         viewMenu.addAction(self._app.recentAction)
1579                         viewMenu.addSeparator()
1580                         viewMenu.addAction(self._app.fullscreenAction)
1581
1582                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1583                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1584                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1585
1586                 self._window.addAction(self._app.logAction)
1587                 self._window.addAction(self._nextUnitAction)
1588                 self._window.addAction(self._previousUnitAction)
1589                 self._window.addAction(self._chooseFavoritesAction)
1590
1591                 self._update_favorites()
1592                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1593                 self._window.show()
1594
1595         @property
1596         def window(self):
1597                 return self._window
1598
1599         def show(self):
1600                 for child in self.walk_children():
1601                         child.hide()
1602                 self._window.show()
1603
1604         def hide(self):
1605                 for child in self.walk_children():
1606                         child.hide()
1607                 self._window.hide()
1608
1609         def close(self):
1610                 for child in self.walk_children():
1611                         child.window.destroyed.disconnect(self._on_child_close)
1612                         child.close()
1613                 self._window.close()
1614
1615         def set_fullscreen(self, isFullscreen):
1616                 if isFullscreen:
1617                         self._window.showFullScreen()
1618                 else:
1619                         self._window.showNormal()
1620
1621         def select_unit(self, unitName):
1622                 index = self._unitsModel.index_unit(unitName)
1623                 self._select_unit(index)
1624
1625         def walk_children(self):
1626                 if self._favoritesWindow is not None:
1627                         yield self._favoritesWindow
1628
1629         def _update_favorites(self, force = False):
1630                 if self._app.showFavoritesAction.isChecked():
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                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1637                 else:
1638                         if force:
1639                                 for i in xrange(len(self._unitsModel)):
1640                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1641
1642         @misc_utils.log_exception(_moduleLogger)
1643         def _on_show_favorites(self, checked = True):
1644                 if checked:
1645                         unitNames = list(self._unitsModel.get_unit_names())
1646                         for i, unitName in enumerate(unitNames):
1647                                 if unitName in self._app.get_hidden_units(self._categoryName):
1648                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1649                 else:
1650                         for i in xrange(len(self._unitsModel)):
1651                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1652
1653         @misc_utils.log_exception(_moduleLogger)
1654         def _on_choose_favorites(self, obj = None):
1655                 assert self._favoritesWindow is None
1656                 self._favoritesWindow = FavoritesWindow(
1657                         self._window,
1658                         self._app,
1659                         unit_data.get_units(self._categoryName),
1660                         self._app.get_hidden_units(self._categoryName)
1661                 )
1662                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1663                 return self._favoritesWindow
1664
1665         @misc_utils.log_exception(_moduleLogger)
1666         def _on_close_favorites(self, obj = None):
1667                 self._favoritesWindow = None
1668                 self._update_favorites(force=True)
1669
1670         @misc_utils.log_exception(_moduleLogger)
1671         def _on_previous_unit(self, checked = True):
1672                 self._select_unit(self._selectedIndex - 1)
1673
1674         @misc_utils.log_exception(_moduleLogger)
1675         def _on_next_unit(self, checked = True):
1676                 self._select_unit(self._selectedIndex + 1)
1677
1678         @misc_utils.log_exception(_moduleLogger)
1679         def _on_close_window(self, checked = True):
1680                 self.close()
1681
1682         @misc_utils.log_exception(_moduleLogger)
1683         def _on_sort_by_name(self, checked = False):
1684                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1685
1686         @misc_utils.log_exception(_moduleLogger)
1687         def _on_sort_by_value(self, checked = False):
1688                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1689
1690         @misc_utils.log_exception(_moduleLogger)
1691         def _on_sort_by_unit(self, checked = False):
1692                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1693
1694         @misc_utils.log_exception(_moduleLogger)
1695         def _on_unit_clicked(self, index):
1696                 self._select_unit(index.row())
1697
1698         @misc_utils.log_exception(_moduleLogger)
1699         def _on_value_edited(self, *args):
1700                 userInput = self._selectedUnitValue.text()
1701                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1702                 self._update_favorites()
1703
1704         def _select_unit(self, index):
1705                 unit = self._unitsModel.get_unit(index)
1706                 self._selectedUnitName.setText(unit.name)
1707                 self._selectedUnitValue.setText(str(unit.value))
1708                 self._selectedUnitSymbol.setText(unit.unit)
1709
1710                 self._selectedIndex = index
1711                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1712                 self._unitsView.scrollTo(qindex)
1713                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1714
1715
1716 def run_gonvert():
1717         app = QtGui.QApplication([])
1718         handle = Gonvert(app)
1719         return app.exec_()
1720
1721
1722 if __name__ == "__main__":
1723         logging.basicConfig(level = logging.DEBUG)
1724         try:
1725                 os.makedirs(constants._data_path_)
1726         except OSError, e:
1727                 if e.errno != 17:
1728                         raise
1729
1730         val = run_gonvert()
1731         sys.exit(val)