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._on_jump_close = lambda obj = None: self._on_child_close("_jumpWindow", obj)
  90                 self._on_recent_close = lambda obj = None: self._on_child_close("_recentWindow", obj)
  91                 self._on_cat_close = lambda obj = None: self._on_child_close("_catWindow", obj)
  92                 self._on_quick_close = lambda obj = None: self._on_child_close("_quickWindow", obj)
  93
  94                 self._condensedAction = QtGui.QAction(None)
  95                 self._condensedAction.setText("Condensed View")
  96                 self._condensedAction.setCheckable(True)
  97                 self._condensedAction.triggered.connect(self._on_condensed_start)
  98
  99                 self._jumpAction = QtGui.QAction(None)
 100                 self._jumpAction.setText("Quick Jump")
 101                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
 102                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
 103                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
 104                 self._jumpAction.triggered.connect(self._on_jump_start)
 105
 106                 self._recentAction = QtGui.QAction(None)
 107                 self._recentAction.setText("Recent Units")
 108                 self._recentAction.setStatusTip("View the recent units")
 109                 self._recentAction.setToolTip("View the recent units")
 110                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
 111                 self._recentAction.triggered.connect(self._on_recent_start)
 112
 113                 self._fullscreenAction = QtGui.QAction(None)
 114                 self._fullscreenAction.setText("Fullscreen")
 115                 self._fullscreenAction.setCheckable(True)
 116                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 117                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 118
 119                 self._showFavoritesAction = QtGui.QAction(None)
 120                 self._showFavoritesAction.setCheckable(True)
 121                 self._showFavoritesAction.setText("Favorites Only")
 122
 123                 self._logAction = QtGui.QAction(None)
 124                 self._logAction.setText("Log")
 125                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 126                 self._logAction.triggered.connect(self._on_log)
 127
 128                 self._quitAction = QtGui.QAction(None)
 129                 self._quitAction.setText("Quit")
 130                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 131                 self._quitAction.triggered.connect(self._on_quit)
 132
 133                 self._app.lastWindowClosed.connect(self._on_app_quit)
 134                 self.load_settings()
 135
 136                 self.request_category()
 137                 if self._recent:
 138                         self._mainWindow.select_category(self._recent[-1][0])
 139
 140         def request_category(self):
 141                 if self._mainWindow is not None:
 142                         self._mainWindow.hide()
 143
 144                 if self._condensedAction.isChecked():
 145                         if self._quickWindow is None:
 146                                 self._quickWindow = QuickConvert(None, self)
 147                                 self._quickWindow.window.destroyed.connect(self._on_quick_close)
 148                         else:
 149                                 self._quickWindow.show()
 150                         self._mainWindow = self._quickWindow
 151                 else:
 152                         if self._catWindow is None:
 153                                 self._catWindow = CategoryWindow(None, self)
 154                                 self._catWindow.window.destroyed.connect(self._on_cat_close)
 155                         else:
 156                                 self._catWindow.window.show()
 157                         self._mainWindow = self._catWindow
 158
 159                 return self._mainWindow
 160
 161         def search_units(self):
 162                 jumpWindow = QuickJump(None, self)
 163                 jumpWindow.window.destroyed.connect(self._on_jump_close)
 164                 self._fake_close_windows()
 165                 self._jumpWindow = jumpWindow
 166                 return self._jumpWindow
 167
 168         def show_recent(self):
 169                 recentWindow = Recent(None, self)
 170                 recentWindow.window.destroyed.connect(self._on_recent_close)
 171                 self._fake_close_windows()
 172                 self._recentWindow = recentWindow
 173                 return self._recentWindow
 174
 175         def add_recent(self, categoryName, unitName):
 176                 catUnit = categoryName, unitName
 177                 try:
 178                         self._recent.remove(catUnit)
 179                 except ValueError:
 180                         pass # ignore if its not already in the recent history
 181                 assert catUnit not in self._recent
 182                 self._recent.append(catUnit)
 183
 184         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 185                 recentUnitName = ""
 186                 for catName, unitName in reversed(self._recent):
 187                         if catName == categoryName:
 188                                 recentUnitName = unitName
 189                                 if fromMostRecent <= 0:
 190                                         break
 191                                 else:
 192                                         fromMostRecent -= 1
 193                 return recentUnitName
 194
 195         def get_recent(self):
 196                 return reversed(self._recent)
 197
 198         @property
 199         def hiddenCategories(self):
 200                 return self._hiddenCategories
 201
 202         def get_hidden_units(self, categoryName):
 203                 try:
 204                         return self._hiddenUnits[categoryName]
 205                 except KeyError:
 206                         self._hiddenUnits[categoryName] = set()
 207                         return self._hiddenUnits[categoryName]
 208
 209         def load_settings(self):
 210                 try:
 211                         with open(constants._user_settings_, "r") as settingsFile:
 212                                 settings = simplejson.load(settingsFile)
 213                 except IOError, e:
 214                         _moduleLogger.info("No settings")
 215                         settings = {}
 216                 except ValueError:
 217                         _moduleLogger.info("Settings were corrupt")
 218                         settings = {}
 219
 220                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 221
 222                 recent = settings.get("recent", self._recent)
 223                 for category, unit in recent:
 224                         self.add_recent(category, unit)
 225
 226                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 227                 self._hiddenUnits = dict(
 228                         (catName, set(units))
 229                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 230                 )
 231
 232                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 233
 234                 self._condensedAction.setChecked(settings.get("useQuick", self._condensedAction.isChecked()))
 235
 236         def save_settings(self):
 237                 settings = {
 238                         "isFullScreen": self._fullscreenAction.isChecked(),
 239                         "recent": self._recent,
 240                         "hiddenCategories": list(self._hiddenCategories),
 241                         "hiddenUnits": dict(
 242                                 (catName, list(units))
 243                                 for (catName, units) in self._hiddenUnits.iteritems()
 244                         ),
 245                         "showFavorites": self._showFavoritesAction.isChecked(),
 246                         "useQuick": self._condensedAction.isChecked(),
 247                 }
 248                 with open(constants._user_settings_, "w") as settingsFile:
 249                         simplejson.dump(settings, settingsFile)
 250
 251         @property
 252         def appIconPath(self):
 253                 return self._appIconPath
 254
 255         @property
 256         def jumpAction(self):
 257                 return self._jumpAction
 258
 259         @property
 260         def recentAction(self):
 261                 return self._recentAction
 262
 263         @property
 264         def fullscreenAction(self):
 265                 return self._fullscreenAction
 266
 267         @property
 268         def condensedAction(self):
 269                 return self._condensedAction
 270
 271         @property
 272         def logAction(self):
 273                 return self._logAction
 274
 275         @property
 276         def quitAction(self):
 277                 return self._quitAction
 278
 279         @property
 280         def showFavoritesAction(self):
 281                 return self._showFavoritesAction
 282
 283         def _walk_children(self):
 284                 if self._catWindow is not None:
 285                         yield self._catWindow
 286                 if self._quickWindow is not None:
 287                         yield self._quickWindow
 288                 if self._jumpWindow is not None:
 289                         yield self._jumpWindow
 290                 if self._recentWindow is not None:
 291                         yield self._recentWindow
 292
 293         def _fake_close_windows(self):
 294                 if self._catWindow is not None:
 295                         self._catWindow.hide()
 296                 if self._quickWindow is not None:
 297                         self._quickWindow.hide()
 298                 if self._jumpWindow is not None:
 299                         self._jumpWindow.disconnect(self._on_jump_close)
 300                         self._jumpWindow.close()
 301                         self._jumpWindow = None
 302                 if self._recentWindow is not None:
 303                         self._recentWindow.disconnect(self._on_recent_close)
 304                         self._recentWindow.close()
 305                         self._recentWindow = None
 306
 307         def _close_windows(self):
 308                 if self._catWindow is not None:
 309                         self._catWindow.disconnect(self._on_cat_close)
 310                         self._catWindow.close()
 311                         self._catWindow = None
 312                 if self._quickWindow is not None:
 313                         self._quickWindow.disconnect(self._on_quick_close)
 314                         self._quickWindow.close()
 315                         self._quickWindow = None
 316                 if self._jumpWindow is not None:
 317                         self._jumpWindow.disconnect(self._on_jump_close)
 318                         self._jumpWindow.close()
 319                         self._jumpWindow = None
 320                 if self._recentWindow is not None:
 321                         self._recentWindow.disconnect(self._on_recent_close)
 322                         self._recentWindow.close()
 323                         self._recentWindow = None
 324
 325         @misc_utils.log_exception(_moduleLogger)
 326         def _on_app_quit(self, checked = False):
 327                 self.save_settings()
 328
 329         @misc_utils.log_exception(_moduleLogger)
 330         def _on_child_close(self, name, obj = None):
 331                 if not hasattr(self, name):
 332                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 333                         return
 334                 setattr(self, name, None)
 335
 336         @misc_utils.log_exception(_moduleLogger)
 337         def _on_toggle_fullscreen(self, checked = False):
 338                 for window in self._walk_children():
 339                         window.set_fullscreen(checked)
 340
 341         @misc_utils.log_exception(_moduleLogger)
 342         def _on_condensed_start(self, checked = False):
 343                 self.request_category()
 344                 if self._recent:
 345                         self._mainWindow.select_category(self._recent[-1][0])
 346
 347         @misc_utils.log_exception(_moduleLogger)
 348         def _on_jump_start(self, checked = False):
 349                 self.search_units()
 350
 351         @misc_utils.log_exception(_moduleLogger)
 352         def _on_recent_start(self, checked = False):
 353                 self.show_recent()
 354
 355         @misc_utils.log_exception(_moduleLogger)
 356         def _on_log(self, checked = False):
 357                 with open(constants._user_logpath_, "r") as f:
 358                         logLines = f.xreadlines()
 359                         log = "".join(logLines)
 360                         self._clipboard.setText(log)
 361
 362         @misc_utils.log_exception(_moduleLogger)
 363         def _on_quit(self, checked = False):
 364                 self._close_windows()
 365
 366
 367 class QuickJump(object):
 368
 369         MINIMAL_ENTRY = 3
 370
 371         def __init__(self, parent, app):
 372                 self._app = app
 373
 374                 self._searchLabel = QtGui.QLabel("Search:")
 375                 self._searchEntry = QtGui.QLineEdit("")
 376                 self._searchEntry.textEdited.connect(self._on_search_edited)
 377
 378                 self._entryLayout = QtGui.QHBoxLayout()
 379                 self._entryLayout.addWidget(self._searchLabel)
 380                 self._entryLayout.addWidget(self._searchEntry)
 381
 382                 self._resultsBox = QtGui.QTreeWidget()
 383                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 384                 self._resultsBox.setHeaderHidden(True)
 385                 if not IS_MAEMO:
 386                         self._resultsBox.setAlternatingRowColors(True)
 387                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 388
 389                 self._layout = QtGui.QVBoxLayout()
 390                 self._layout.addLayout(self._entryLayout)
 391                 self._layout.addWidget(self._resultsBox)
 392
 393                 centralWidget = QtGui.QWidget()
 394                 centralWidget.setLayout(self._layout)
 395
 396                 self._window = QtGui.QMainWindow(parent)
 397                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 398                 maeqt.set_autorient(self._window, True)
 399                 maeqt.set_stackable(self._window, True)
 400                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 401                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 402                 self._window.setCentralWidget(centralWidget)
 403
 404                 self._closeWindowAction = QtGui.QAction(None)
 405                 self._closeWindowAction.setText("Close")
 406                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 407                 self._closeWindowAction.triggered.connect(self._on_close_window)
 408
 409                 if IS_MAEMO:
 410                         self._window.addAction(self._closeWindowAction)
 411                         self._window.addAction(self._app.quitAction)
 412                         self._window.addAction(self._app.fullscreenAction)
 413                 else:
 414                         fileMenu = self._window.menuBar().addMenu("&Units")
 415                         fileMenu.addAction(self._closeWindowAction)
 416                         fileMenu.addAction(self._app.quitAction)
 417
 418                         viewMenu = self._window.menuBar().addMenu("&View")
 419                         viewMenu.addAction(self._app.fullscreenAction)
 420
 421                 self._window.addAction(self._app.logAction)
 422
 423                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 424                 self._window.show()
 425
 426         @property
 427         def window(self):
 428                 return self._window
 429
 430         def show(self):
 431                 self._window.show()
 432
 433         def hide(self):
 434                 self._window.hide()
 435
 436         def close(self):
 437                 self._window.close()
 438
 439         def set_fullscreen(self, isFullscreen):
 440                 if isFullscreen:
 441                         self._window.showFullScreen()
 442                 else:
 443                         self._window.showNormal()
 444
 445         @misc_utils.log_exception(_moduleLogger)
 446         def _on_close_window(self, checked = True):
 447                 self.close()
 448
 449         @misc_utils.log_exception(_moduleLogger)
 450         def _on_result_clicked(self, item, columnIndex):
 451                 categoryName = unicode(item.text(0))
 452                 unitName = unicode(item.text(1))
 453                 catWindow = self._app.request_category()
 454                 unitsWindow = catWindow.select_category(categoryName)
 455                 unitsWindow.select_unit(unitName)
 456                 self.close()
 457
 458         @misc_utils.log_exception(_moduleLogger)
 459         def _on_search_edited(self, *args):
 460                 userInput = self._searchEntry.text()
 461                 if len(userInput) <  self.MINIMAL_ENTRY:
 462                         return
 463
 464                 self._resultsBox.clear()
 465                 lowerInput = str(userInput).lower()
 466                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 467                         units = unit_data.get_units(category)
 468                         for unitIndex, unit in enumerate(units):
 469                                 loweredUnit = unit.lower()
 470                                 if lowerInput in loweredUnit:
 471                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 472                                         twi.setText(0, category)
 473                                         twi.setText(1, unit)
 474
 475
 476 class Recent(object):
 477
 478         def __init__(self, parent, app):
 479                 self._app = app
 480
 481                 self._resultsBox = QtGui.QTreeWidget()
 482                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 483                 self._resultsBox.setHeaderHidden(True)
 484                 if not IS_MAEMO:
 485                         self._resultsBox.setAlternatingRowColors(True)
 486                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 487
 488                 self._layout = QtGui.QVBoxLayout()
 489                 self._layout.addWidget(self._resultsBox)
 490
 491                 centralWidget = QtGui.QWidget()
 492                 centralWidget.setLayout(self._layout)
 493
 494                 self._window = QtGui.QMainWindow(parent)
 495                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 496                 maeqt.set_autorient(self._window, True)
 497                 maeqt.set_stackable(self._window, True)
 498                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 499                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 500                 self._window.setCentralWidget(centralWidget)
 501
 502                 for cat, unit in self._app.get_recent():
 503                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 504                         twi.setText(0, cat)
 505                         twi.setText(1, unit)
 506
 507                 self._closeWindowAction = QtGui.QAction(None)
 508                 self._closeWindowAction.setText("Close")
 509                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 510                 self._closeWindowAction.triggered.connect(self._on_close_window)
 511
 512                 if IS_MAEMO:
 513                         self._window.addAction(self._closeWindowAction)
 514                         self._window.addAction(self._app.quitAction)
 515                         self._window.addAction(self._app.fullscreenAction)
 516                 else:
 517                         fileMenu = self._window.menuBar().addMenu("&Units")
 518                         fileMenu.addAction(self._closeWindowAction)
 519                         fileMenu.addAction(self._app.quitAction)
 520
 521                         viewMenu = self._window.menuBar().addMenu("&View")
 522                         viewMenu.addAction(self._app.fullscreenAction)
 523
 524                 self._window.addAction(self._app.logAction)
 525
 526                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 527                 self._window.show()
 528
 529         @property
 530         def window(self):
 531                 return self._window
 532
 533         def show(self):
 534                 self._window.show()
 535
 536         def hide(self):
 537                 self._window.hide()
 538
 539         def close(self):
 540                 self._window.close()
 541
 542         def set_fullscreen(self, isFullscreen):
 543                 if isFullscreen:
 544                         self._window.showFullScreen()
 545                 else:
 546                         self._window.showNormal()
 547
 548         @misc_utils.log_exception(_moduleLogger)
 549         def _on_close_window(self, checked = True):
 550                 self.close()
 551
 552         @misc_utils.log_exception(_moduleLogger)
 553         def _on_result_clicked(self, item, columnIndex):
 554                 categoryName = unicode(item.text(0))
 555                 unitName = unicode(item.text(1))
 556                 catWindow = self._app.request_category()
 557                 unitsWindow = catWindow.select_category(categoryName)
 558                 unitsWindow.select_unit(unitName)
 559                 self.close()
 560
 561
 562 class QuickConvert(object):
 563
 564         def __init__(self, parent, app):
 565                 self._app = app
 566                 self._categoryName = ""
 567                 self._inputUnitName = ""
 568                 self._outputUnitName = ""
 569                 self._unitNames = []
 570                 self._favoritesWindow = None
 571
 572                 self._inputUnitValue = QtGui.QLineEdit()
 573                 self._inputUnitValue.setInputMethodHints(QtCore.Qt.ImhPreferNumbers)
 574                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 575                 self._inputUnitSymbol = QtGui.QLabel()
 576
 577                 self._outputUnitValue = QtGui.QLabel()
 578                 self._outputUnitSymbol = QtGui.QLabel()
 579
 580                 self._conversionLayout = QtGui.QHBoxLayout()
 581                 self._conversionLayout.addWidget(self._inputUnitValue)
 582                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 583                 self._conversionLayout.addWidget(self._outputUnitValue)
 584                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 585
 586                 self._categoryView = QtGui.QTreeWidget()
 587                 self._categoryView.setHeaderLabels(["Categories"])
 588                 self._categoryView.setHeaderHidden(False)
 589                 if not IS_MAEMO:
 590                         self._categoryView.setAlternatingRowColors(True)
 591                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 592                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 593                 for catName in unit_data.UNIT_CATEGORIES:
 594                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 595                         twi.setText(0, catName)
 596                 self._categorySelection = self._categoryView.selectionModel()
 597                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 598
 599                 self._inputView = QtGui.QTreeWidget()
 600                 self._inputView.setHeaderLabels(["From", "Name"])
 601                 self._inputView.setHeaderHidden(False)
 602                 self._inputView.header().hideSection(1)
 603                 if not IS_MAEMO:
 604                         self._inputView.setAlternatingRowColors(True)
 605                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 606                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 607                 self._inputSelection = self._inputView.selectionModel()
 608                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 609
 610                 self._outputView = QtGui.QTreeWidget()
 611                 self._outputView.setHeaderLabels(["To", "Name"])
 612                 self._outputView.setHeaderHidden(False)
 613                 self._outputView.header().hideSection(1)
 614                 if not IS_MAEMO:
 615                         self._outputView.setAlternatingRowColors(True)
 616                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 617                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 618                 self._outputWidgets = []
 619                 self._outputSelection = self._outputView.selectionModel()
 620                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 621
 622                 self._selectionLayout = QtGui.QHBoxLayout()
 623                 self._selectionLayout.addWidget(self._categoryView)
 624                 self._selectionLayout.addWidget(self._inputView)
 625                 self._selectionLayout.addWidget(self._outputView)
 626
 627                 self._layout = QtGui.QVBoxLayout()
 628                 self._layout.addLayout(self._conversionLayout)
 629                 self._layout.addLayout(self._selectionLayout)
 630
 631                 centralWidget = QtGui.QWidget()
 632                 centralWidget.setLayout(self._layout)
 633
 634                 self._window = QtGui.QMainWindow(parent)
 635                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 636                 maeqt.set_autorient(self._window, True)
 637                 maeqt.set_stackable(self._window, True)
 638                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 639                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 640                 self._window.setCentralWidget(centralWidget)
 641
 642                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 643                 self._chooseCatFavoritesAction.setText("Select Categories")
 644                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 645
 646                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 647                 self._chooseUnitFavoritesAction.setText("Select Units")
 648                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 649                 self._chooseUnitFavoritesAction.setEnabled(False)
 650
 651                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 652
 653                 self._closeWindowAction = QtGui.QAction(None)
 654                 self._closeWindowAction.setText("Close Window")
 655                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 656                 self._closeWindowAction.triggered.connect(self._on_close_window)
 657
 658                 if IS_MAEMO:
 659                         self._window.addAction(self._closeWindowAction)
 660                         self._window.addAction(self._app.quitAction)
 661                         self._window.addAction(self._app.fullscreenAction)
 662
 663                         fileMenu = self._window.menuBar().addMenu("&Units")
 664                         fileMenu.addAction(self._chooseCatFavoritesAction)
 665                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 666
 667                         viewMenu = self._window.menuBar().addMenu("&View")
 668                         viewMenu.addAction(self._app.showFavoritesAction)
 669                         viewMenu.addAction(self._app.condensedAction)
 670                         viewMenu.addSeparator()
 671                         viewMenu.addAction(self._app.jumpAction)
 672                         viewMenu.addAction(self._app.recentAction)
 673                 else:
 674                         fileMenu = self._window.menuBar().addMenu("&Units")
 675                         fileMenu.addAction(self._chooseCatFavoritesAction)
 676                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 677                         fileMenu.addAction(self._closeWindowAction)
 678                         fileMenu.addAction(self._app.quitAction)
 679
 680                         viewMenu = self._window.menuBar().addMenu("&View")
 681                         viewMenu.addAction(self._app.showFavoritesAction)
 682                         viewMenu.addAction(self._app.condensedAction)
 683                         viewMenu.addSeparator()
 684                         viewMenu.addAction(self._app.jumpAction)
 685                         viewMenu.addAction(self._app.recentAction)
 686                         viewMenu.addSeparator()
 687                         viewMenu.addAction(self._app.fullscreenAction)
 688
 689                 self._window.addAction(self._app.logAction)
 690
 691                 self._update_favorites()
 692                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 693                 self._window.show()
 694
 695         @property
 696         def window(self):
 697                 return self._window
 698
 699         def show(self):
 700                 self._window.show()
 701
 702         def hide(self):
 703                 self._window.hide()
 704
 705         def close(self):
 706                 self._window.close()
 707
 708         def set_fullscreen(self, isFullscreen):
 709                 if isFullscreen:
 710                         self._window.showFullScreen()
 711                 else:
 712                         self._window.showNormal()
 713
 714         def select_category(self, categoryName):
 715                 self._inputUnitValue.setText("")
 716                 self._inputUnitSymbol.setText("")
 717                 self._inputView.clear()
 718                 self._outputUnitValue.setText("")
 719                 self._outputUnitSymbol.setText("")
 720                 self._outputView.clear()
 721                 self._categoryName = categoryName
 722                 self._chooseUnitFavoritesAction.setEnabled(True)
 723
 724                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 725                 self._unitNames = list(unit_data.get_units(categoryName))
 726                 self._unitNames.sort()
 727                 for key in self._unitNames:
 728                         conversion, unit, description = unitData[key]
 729                         if not unit:
 730                                 unit = key
 731
 732                         twi = QtGui.QTreeWidgetItem(self._inputView)
 733                         twi.setText(0, unit)
 734                         twi.setText(1, key)
 735
 736                         twi = QtGui.QTreeWidgetItem(self._outputView)
 737                         twi.setText(0, unit)
 738                         twi.setText(1, key)
 739
 740                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 741                 rootIndex = self._categoryView.rootIndex()
 742                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 743                 self._categoryView.scrollTo(currentIndex)
 744
 745                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 746                 if defaultInputUnitName:
 747                         self.select_input(defaultInputUnitName)
 748                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 749                         assert defaultOutputUnitName
 750                         self.select_output(defaultOutputUnitName)
 751
 752                 return self
 753
 754         def select_unit(self, name):
 755                 self.select_input(name)
 756
 757         def select_input(self, name):
 758                 self._app.add_recent(self._categoryName, name)
 759                 self._inputUnitName = name
 760
 761                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 762                 conversion, unit, description = unitData[name]
 763
 764                 self._inputUnitSymbol.setText(unit if unit else name)
 765
 766                 i = self._unitNames.index(name)
 767                 rootIndex = self._inputView.rootIndex()
 768                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 769                 self._inputView.scrollTo(currentIndex)
 770
 771         def select_output(self, name):
 772                 # Add the output to recent but don't make things weird by making it the most recent
 773                 self._app.add_recent(self._categoryName, name)
 774                 self._app.add_recent(self._categoryName, self._inputUnitName)
 775                 self._outputUnitName = name
 776
 777                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 778                 conversion, unit, description = unitData[name]
 779
 780                 self._outputUnitSymbol.setText(unit if unit else name)
 781
 782                 i = self._unitNames.index(name)
 783                 rootIndex = self._outputView.rootIndex()
 784                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 785                 self._outputView.scrollTo(currentIndex)
 786
 787         def _sanitize_value(self, userEntry):
 788                 if self._categoryName == "Computer Numbers":
 789                         if userEntry == '':
 790                                 value = '0'
 791                         else:
 792                                 value = userEntry
 793                 else:
 794                         if userEntry == '':
 795                                 value = 0.0
 796                         else:
 797                                 value = float(userEntry)
 798                 return value
 799
 800         def _update_favorites(self):
 801                 if self._app.showFavoritesAction.isChecked():
 802                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 803                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 804                                 if catName in self._app.hiddenCategories:
 805                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 806                                 else:
 807                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 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                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 815                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 816                 else:
 817                         for i in xrange(self._categoryView.topLevelItemCount()):
 818                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 819
 820                         for i in xrange(len(self._unitNames)):
 821                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 822                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 823
 824         @misc_utils.log_exception(_moduleLogger)
 825         def _on_close_window(self, checked = True):
 826                 self.close()
 827
 828         @misc_utils.log_exception(_moduleLogger)
 829         def _on_show_favorites(self, checked = True):
 830                 if checked:
 831                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 832                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 833                                 if catName in self._app.hiddenCategories:
 834                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 835
 836                         for i, unitName in enumerate(self._unitNames):
 837                                 if unitName in self._app.get_hidden_units(self._categoryName):
 838                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 839                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 840                 else:
 841                         for i in xrange(self._categoryView.topLevelItemCount()):
 842                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 843
 844                         for i in xrange(len(self._unitNames)):
 845                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 846                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 847
 848         @misc_utils.log_exception(_moduleLogger)
 849         def _on_choose_category_favorites(self, obj = None):
 850                 assert self._favoritesWindow is None
 851                 self._favoritesWindow = FavoritesWindow(
 852                         self._window,
 853                         self._app,
 854                         unit_data.UNIT_CATEGORIES,
 855                         self._app.hiddenCategories
 856                 )
 857                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 858                 return self._favoritesWindow
 859
 860         @misc_utils.log_exception(_moduleLogger)
 861         def _on_choose_unit_favorites(self, obj = None):
 862                 assert self._favoritesWindow is None
 863                 self._favoritesWindow = FavoritesWindow(
 864                         self._window,
 865                         self._app,
 866                         unit_data.get_units(self._categoryName),
 867                         self._app.get_hidden_units(self._categoryName)
 868                 )
 869                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 870                 return self._favoritesWindow
 871
 872         @misc_utils.log_exception(_moduleLogger)
 873         def _on_close_favorites(self, obj = None):
 874                 self._favoritesWindow = None
 875                 self._update_favorites()
 876
 877         @misc_utils.log_exception(_moduleLogger)
 878         def _on_value_edited(self, *args):
 879                 assert self._categoryName
 880                 assert self._inputUnitName
 881                 assert self._outputUnitName
 882
 883                 userInput = str(self._inputUnitValue.text())
 884                 value = self._sanitize_value(userInput)
 885
 886                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 887                 inputConversion, _, _ = unitData[self._inputUnitName]
 888                 outputConversion, _, _ = unitData[self._outputUnitName]
 889
 890                 func, arg = inputConversion
 891                 base = func.to_base(value, arg)
 892
 893                 func, arg = outputConversion
 894                 newValue = func.from_base(base, arg)
 895                 self._outputUnitValue.setText(str(newValue))
 896
 897         @misc_utils.log_exception(_moduleLogger)
 898         def _on_category_selection_changed(self, selected, deselected):
 899                 selectedNames = [
 900                         str(item.text(0))
 901                         for item in self._categoryView.selectedItems()
 902                 ]
 903                 assert len(selectedNames) == 1
 904                 self.select_category(selectedNames[0])
 905
 906         @misc_utils.log_exception(_moduleLogger)
 907         def _on_input_selection_changed(self, selected, deselected):
 908                 selectedNames = [
 909                         str(item.text(1))
 910                         for item in self._inputView.selectedItems()
 911                 ]
 912                 if selectedNames:
 913                         assert len(selectedNames) == 1
 914                         name = selectedNames[0]
 915                         self.select_input(name)
 916                 else:
 917                         pass
 918
 919         @misc_utils.log_exception(_moduleLogger)
 920         def _on_output_selection_changed(self, selected, deselected):
 921                 selectedNames = [
 922                         str(item.text(1))
 923                         for item in self._outputView.selectedItems()
 924                 ]
 925                 if selectedNames:
 926                         assert len(selectedNames) == 1
 927                         name = selectedNames[0]
 928                         self.select_output(name)
 929                 else:
 930                         pass
 931
 932
 933 class FavoritesWindow(object):
 934
 935         def __init__(self, parent, app, source, hidden):
 936                 self._app = app
 937                 self._source = list(source)
 938                 self._hidden = hidden
 939
 940                 self._categories = QtGui.QTreeWidget()
 941                 self._categories.setHeaderLabels(["Categories"])
 942                 self._categories.setHeaderHidden(True)
 943                 if not IS_MAEMO:
 944                         self._categories.setAlternatingRowColors(True)
 945                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 946                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 947                 self._childWidgets = []
 948                 for catName in self._source:
 949                         twi = QtGui.QTreeWidgetItem(self._categories)
 950                         twi.setText(0, catName)
 951                         self._childWidgets.append(twi)
 952                         if catName not in self._hidden:
 953                                 self._categories.setItemSelected(twi, True)
 954                 self._selection = self._categories.selectionModel()
 955                 self._selection.selectionChanged.connect(self._on_selection_changed)
 956
 957                 self._allButton = QtGui.QPushButton("All")
 958                 self._allButton.clicked.connect(self._on_select_all)
 959                 self._invertButton = QtGui.QPushButton("Invert")
 960                 self._invertButton.clicked.connect(self._on_invert_selection)
 961                 self._noneButton = QtGui.QPushButton("None")
 962                 self._noneButton.clicked.connect(self._on_select_none)
 963
 964                 self._buttonLayout = QtGui.QHBoxLayout()
 965                 self._buttonLayout.addWidget(self._allButton)
 966                 self._buttonLayout.addWidget(self._invertButton)
 967                 self._buttonLayout.addWidget(self._noneButton)
 968
 969                 self._layout = QtGui.QVBoxLayout()
 970                 self._layout.addWidget(self._categories)
 971                 self._layout.addLayout(self._buttonLayout)
 972
 973                 centralWidget = QtGui.QWidget()
 974                 centralWidget.setLayout(self._layout)
 975
 976                 self._window = QtGui.QMainWindow(parent)
 977                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 978                 maeqt.set_autorient(self._window, True)
 979                 maeqt.set_stackable(self._window, True)
 980                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 981                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 982                 self._window.setCentralWidget(centralWidget)
 983
 984                 self._closeWindowAction = QtGui.QAction(None)
 985                 self._closeWindowAction.setText("Close")
 986                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 987                 self._closeWindowAction.triggered.connect(self._on_close_window)
 988
 989                 if IS_MAEMO:
 990                         self._window.addAction(self._closeWindowAction)
 991                         self._window.addAction(self._app.quitAction)
 992                         self._window.addAction(self._app.fullscreenAction)
 993                 else:
 994                         fileMenu = self._window.menuBar().addMenu("&Units")
 995                         fileMenu.addAction(self._closeWindowAction)
 996                         fileMenu.addAction(self._app.quitAction)
 997
 998                         viewMenu = self._window.menuBar().addMenu("&View")
 999                         viewMenu.addAction(self._app.fullscreenAction)
1000
1001                 self._window.addAction(self._app.logAction)
1002
1003                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1004                 self._window.show()
1005
1006         @property
1007         def window(self):
1008                 return self._window
1009
1010         def show(self):
1011                 self._window.show()
1012
1013         def hide(self):
1014                 self._window.hide()
1015
1016         def close(self):
1017                 self._window.close()
1018
1019         def set_fullscreen(self, isFullscreen):
1020                 if isFullscreen:
1021                         self._window.showFullScreen()
1022                 else:
1023                         self._window.showNormal()
1024
1025         @misc_utils.log_exception(_moduleLogger)
1026         def _on_select_all(self, checked = False):
1027                 for child in self._childWidgets:
1028                         self._categories.setItemSelected(child, True)
1029
1030         @misc_utils.log_exception(_moduleLogger)
1031         def _on_invert_selection(self, checked = False):
1032                 for child in self._childWidgets:
1033                         isSelected = self._categories.isItemSelected(child)
1034                         self._categories.setItemSelected(child, not isSelected)
1035
1036         @misc_utils.log_exception(_moduleLogger)
1037         def _on_select_none(self, checked = False):
1038                 for child in self._childWidgets:
1039                         self._categories.setItemSelected(child, False)
1040
1041         @misc_utils.log_exception(_moduleLogger)
1042         def _on_selection_changed(self, selected, deselected):
1043                 self._hidden.clear()
1044                 selectedNames = set(
1045                         str(item.text(0))
1046                         for item in self._categories.selectedItems()
1047                 )
1048                 for name in self._source:
1049                         if name not in selectedNames:
1050                                 self._hidden.add(name)
1051
1052         @misc_utils.log_exception(_moduleLogger)
1053         def _on_close_window(self, checked = True):
1054                 self.close()
1055
1056
1057 class CategoryWindow(object):
1058
1059         def __init__(self, parent, app):
1060                 self._app = app
1061                 self._unitWindow = None
1062                 self._favoritesWindow = None
1063
1064                 self._categories = QtGui.QTreeWidget()
1065                 self._categories.setHeaderLabels(["Categories"])
1066                 self._categories.itemClicked.connect(self._on_category_clicked)
1067                 self._categories.setHeaderHidden(True)
1068                 if not IS_MAEMO:
1069                         self._categories.setAlternatingRowColors(True)
1070                 for catName in unit_data.UNIT_CATEGORIES:
1071                         twi = QtGui.QTreeWidgetItem(self._categories)
1072                         twi.setText(0, catName)
1073
1074                 self._layout = QtGui.QVBoxLayout()
1075                 self._layout.addWidget(self._categories)
1076
1077                 centralWidget = QtGui.QWidget()
1078                 centralWidget.setLayout(self._layout)
1079
1080                 self._window = QtGui.QMainWindow(parent)
1081                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1082                 maeqt.set_autorient(self._window, True)
1083                 maeqt.set_stackable(self._window, True)
1084                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
1085                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
1086                 self._window.setCentralWidget(centralWidget)
1087
1088                 self._chooseFavoritesAction = QtGui.QAction(None)
1089                 self._chooseFavoritesAction.setText("Select Favorites")
1090                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1091                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1092
1093                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1094
1095                 self._closeWindowAction = QtGui.QAction(None)
1096                 self._closeWindowAction.setText("Close")
1097                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1098                 self._closeWindowAction.triggered.connect(self._on_close_window)
1099
1100                 if IS_MAEMO:
1101                         fileMenu = self._window.menuBar().addMenu("&Units")
1102                         fileMenu.addAction(self._chooseFavoritesAction)
1103
1104                         viewMenu = self._window.menuBar().addMenu("&View")
1105                         viewMenu.addAction(self._app.showFavoritesAction)
1106                         viewMenu.addAction(self._app.condensedAction)
1107                         viewMenu.addSeparator()
1108                         viewMenu.addAction(self._app.jumpAction)
1109                         viewMenu.addAction(self._app.recentAction)
1110
1111                         self._window.addAction(self._closeWindowAction)
1112                         self._window.addAction(self._app.quitAction)
1113                         self._window.addAction(self._app.fullscreenAction)
1114                 else:
1115                         fileMenu = self._window.menuBar().addMenu("&Units")
1116                         fileMenu.addAction(self._chooseFavoritesAction)
1117                         fileMenu.addAction(self._closeWindowAction)
1118                         fileMenu.addAction(self._app.quitAction)
1119
1120                         viewMenu = self._window.menuBar().addMenu("&View")
1121                         viewMenu.addAction(self._app.showFavoritesAction)
1122                         viewMenu.addAction(self._app.condensedAction)
1123                         viewMenu.addSeparator()
1124                         viewMenu.addAction(self._app.jumpAction)
1125                         viewMenu.addAction(self._app.recentAction)
1126                         viewMenu.addSeparator()
1127                         viewMenu.addAction(self._app.fullscreenAction)
1128
1129                 self._window.addAction(self._app.logAction)
1130
1131                 self._update_favorites()
1132                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1133                 self._window.show()
1134
1135         @property
1136         def window(self):
1137                 return self._window
1138
1139         def walk_children(self):
1140                 if self._unitWindow is not None:
1141                         yield self._unitWindow
1142                 if self._favoritesWindow is not None:
1143                         yield self._favoritesWindow
1144
1145         def show(self):
1146                 for child in self.walk_children():
1147                         child.show()
1148                 self._window.show()
1149
1150         def hide(self):
1151                 for child in self.walk_children():
1152                         child.hide()
1153                 self._window.hide()
1154
1155         def close(self):
1156                 for child in self.walk_children():
1157                         child.window.destroyed.disconnect(self._on_child_close)
1158                         child.close()
1159                 self._window.close()
1160
1161         def select_category(self, categoryName):
1162                 for child in self.walk_children():
1163                         child.window.destroyed.disconnect(self._on_child_close)
1164                         child.close()
1165                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
1166                 self._unitWindow.window.destroyed.connect(self._on_child_close)
1167
1168                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
1169                 rootIndex = self._categories.rootIndex()
1170                 currentIndex = self._categories.model().index(i, 0, rootIndex)
1171                 self._categories.scrollTo(currentIndex)
1172                 return self._unitWindow
1173
1174         def set_fullscreen(self, isFullscreen):
1175                 if isFullscreen:
1176                         self._window.showFullScreen()
1177                 else:
1178                         self._window.showNormal()
1179                 for child in self.walk_children():
1180                         child.set_fullscreen(isFullscreen)
1181
1182         def _update_favorites(self):
1183                 if self._app.showFavoritesAction.isChecked():
1184                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1185                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1186                                 if catName in self._app.hiddenCategories:
1187                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1188                                 else:
1189                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1190                 else:
1191                         for i in xrange(self._categories.topLevelItemCount()):
1192                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1193
1194         @misc_utils.log_exception(_moduleLogger)
1195         def _on_show_favorites(self, checked = True):
1196                 if checked:
1197                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1198                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1199                                 if catName in self._app.hiddenCategories:
1200                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1201                 else:
1202                         for i in xrange(self._categories.topLevelItemCount()):
1203                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1204
1205         @misc_utils.log_exception(_moduleLogger)
1206         def _on_choose_favorites(self, obj = None):
1207                 assert self._favoritesWindow is None
1208                 self._favoritesWindow = FavoritesWindow(
1209                         self._window,
1210                         self._app,
1211                         unit_data.UNIT_CATEGORIES,
1212                         self._app.hiddenCategories
1213                 )
1214                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1215                 return self._favoritesWindow
1216
1217         @misc_utils.log_exception(_moduleLogger)
1218         def _on_close_favorites(self, obj = None):
1219                 self._favoritesWindow = None
1220                 self._update_favorites()
1221
1222         @misc_utils.log_exception(_moduleLogger)
1223         def _on_child_close(self, obj = None):
1224                 self._unitWindow = None
1225
1226         @misc_utils.log_exception(_moduleLogger)
1227         def _on_close_window(self, checked = True):
1228                 self.close()
1229
1230         @misc_utils.log_exception(_moduleLogger)
1231         def _on_category_clicked(self, item, columnIndex):
1232                 categoryName = unicode(item.text(0))
1233                 self.select_category(categoryName)
1234
1235
1236 class UnitData(object):
1237
1238         HEADERS = ["Name", "Value", "", "Unit"]
1239         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1240         NAME_COLUMN = 0
1241         VALUE_COLUMN_0 = 1
1242         VALUE_COLUMN_1 = 2
1243         UNIT_COLUMN = 3
1244
1245         def __init__(self, name, unit, description, conversion):
1246                 self._name = name
1247                 self._unit = unit
1248                 self._description = description
1249                 self._conversion = conversion
1250
1251                 self._value = 0.0
1252                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1253
1254         @property
1255         def name(self):
1256                 return self._name
1257
1258         @property
1259         def value(self):
1260                 return self._value
1261
1262         def update_value(self, newValue):
1263                 self._value = newValue
1264                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1265
1266         @property
1267         def unit(self):
1268                 return self._unit
1269
1270         @property
1271         def conversion(self):
1272                 return self._conversion
1273
1274         def data(self, column):
1275                 try:
1276                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1277                 except IndexError:
1278                         return None
1279
1280
1281 class UnitModel(QtCore.QAbstractItemModel):
1282
1283         def __init__(self, categoryName, parent=None):
1284                 super(UnitModel, self).__init__(parent)
1285                 self._categoryName = categoryName
1286                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1287
1288                 self._children = []
1289                 for key in unit_data.get_units(self._categoryName):
1290                         conversion, unit, description = self._unitData[key]
1291                         self._children.append(UnitData(key, unit, description, conversion))
1292                 self._sortSettings = None
1293
1294         @misc_utils.log_exception(_moduleLogger)
1295         def columnCount(self, parent):
1296                 if parent.isValid():
1297                         return 0
1298                 else:
1299                         return len(UnitData.HEADERS)
1300
1301         @misc_utils.log_exception(_moduleLogger)
1302         def data(self, index, role):
1303                 if not index.isValid():
1304                         return None
1305                 elif role == QtCore.Qt.TextAlignmentRole:
1306                         return UnitData.ALIGNMENT[index.column()]
1307                 elif role != QtCore.Qt.DisplayRole:
1308                         return None
1309
1310                 item = index.internalPointer()
1311                 if isinstance(item, UnitData):
1312                         return item.data(index.column())
1313                 elif item is UnitData.HEADERS:
1314                         return item[index.column()]
1315
1316         @misc_utils.log_exception(_moduleLogger)
1317         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1318                 self._sortSettings = column, order
1319                 isReverse = order == QtCore.Qt.AscendingOrder
1320                 if column == UnitData.NAME_COLUMN:
1321                         key_func = lambda item: item.name
1322                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1323                         key_func = lambda item: item.value
1324                 elif column == UnitData.UNIT_COLUMN:
1325                         key_func = lambda item: item.unit
1326                 self._children.sort(key=key_func, reverse = isReverse)
1327
1328                 self._all_changed()
1329
1330         @misc_utils.log_exception(_moduleLogger)
1331         def flags(self, index):
1332                 if not index.isValid():
1333                         return QtCore.Qt.NoItemFlags
1334
1335                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1336
1337         @misc_utils.log_exception(_moduleLogger)
1338         def headerData(self, section, orientation, role):
1339                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1340                         return UnitData.HEADERS[section]
1341
1342                 return None
1343
1344         @misc_utils.log_exception(_moduleLogger)
1345         def index(self, row, column, parent):
1346                 if not self.hasIndex(row, column, parent):
1347                         return QtCore.QModelIndex()
1348
1349                 if parent.isValid():
1350                         return QtCore.QModelIndex()
1351
1352                 parentItem = UnitData.HEADERS
1353                 childItem = self._children[row]
1354                 if childItem:
1355                         return self.createIndex(row, column, childItem)
1356                 else:
1357                         return QtCore.QModelIndex()
1358
1359         @misc_utils.log_exception(_moduleLogger)
1360         def parent(self, index):
1361                 if not index.isValid():
1362                         return QtCore.QModelIndex()
1363
1364                 childItem = index.internalPointer()
1365                 if isinstance(childItem, UnitData):
1366                         return QtCore.QModelIndex()
1367                 elif childItem is UnitData.HEADERS:
1368                         return None
1369
1370         @misc_utils.log_exception(_moduleLogger)
1371         def rowCount(self, parent):
1372                 if 0 < parent.column():
1373                         return 0
1374
1375                 if not parent.isValid():
1376                         return len(self._children)
1377                 else:
1378                         return len(self._children)
1379
1380         def get_unit(self, index):
1381                 assert 0 <= index
1382                 return self._children[index]
1383
1384         def get_unit_names(self):
1385                 for child in self._children:
1386                         yield child.name
1387
1388         def index_unit(self, unitName):
1389                 for i, child in enumerate(self._children):
1390                         if child.name == unitName:
1391                                 return i
1392                 else:
1393                         raise RuntimeError("Unit not found")
1394
1395         def update_values(self, fromIndex, userInput):
1396                 value = self._sanitize_value(userInput)
1397                 func, arg = self._children[fromIndex].conversion
1398                 base = func.to_base(value, arg)
1399                 for i, child in enumerate(self._children):
1400                         if i == fromIndex:
1401                                 continue
1402                         func, arg = child.conversion
1403                         newValue = func.from_base(base, arg)
1404                         child.update_value(newValue)
1405
1406                 if (
1407                         self._sortSettings is not None and
1408                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1409                 ):
1410                         # Sort takes care of marking everything as changed
1411                         self.sort(*self._sortSettings)
1412                 else:
1413                         self._values_changed()
1414
1415         def __len__(self):
1416                 return len(self._children)
1417
1418         def _values_changed(self):
1419                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1420                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1421                 self.dataChanged.emit(topLeft, bottomRight)
1422
1423         def _all_changed(self):
1424                 topLeft = self.createIndex(0, 0, self._children[0])
1425                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1426                 self.dataChanged.emit(topLeft, bottomRight)
1427
1428         def _sanitize_value(self, userEntry):
1429                 if self._categoryName == "Computer Numbers":
1430                         if userEntry == '':
1431                                 value = '0'
1432                         else:
1433                                 value = userEntry
1434                 else:
1435                         if userEntry == '':
1436                                 value = 0.0
1437                         else:
1438                                 value = float(userEntry)
1439                 return value
1440
1441
1442 class UnitWindow(object):
1443
1444         def __init__(self, parent, category, app):
1445                 self._app = app
1446                 self._categoryName = category
1447                 self._selectedIndex = 0
1448                 self._favoritesWindow = None
1449
1450                 self._selectedUnitName = QtGui.QLabel()
1451                 self._selectedUnitValue = QtGui.QLineEdit()
1452                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1453                 maeqt.mark_numbers_preferred(self._selectedUnitValue)
1454                 self._selectedUnitSymbol = QtGui.QLabel()
1455
1456                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1457                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1458                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1459                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1460
1461                 self._unitsModel = UnitModel(self._categoryName)
1462                 self._unitsView = QtGui.QTreeView()
1463                 self._unitsView.setModel(self._unitsModel)
1464                 self._unitsView.clicked.connect(self._on_unit_clicked)
1465                 self._unitsView.setUniformRowHeights(True)
1466                 self._unitsView.setSortingEnabled(True)
1467                 self._unitsView.setTextElideMode(QtCore.Qt.ElideNone)
1468                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1469                 if not IS_MAEMO:
1470                         self._unitsView.setAlternatingRowColors(True)
1471                 if True:
1472                         self._unitsView.setHeaderHidden(True)
1473
1474                 viewHeader = self._unitsView.header()
1475                 viewHeader.setSortIndicatorShown(True)
1476                 viewHeader.setClickable(True)
1477
1478                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1479                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1480                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1481                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1482                 viewHeader.setStretchLastSection(False)
1483
1484                 # Trying to make things faster by locking in the initial size of the immutable columns
1485                 nameSize = min(viewHeader.sectionSize(UnitData.NAME_COLUMN), 125)
1486                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1487                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1488                 unitSize = min(viewHeader.sectionSize(UnitData.UNIT_COLUMN), 125)
1489                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1490                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1491
1492                 self._layout = QtGui.QVBoxLayout()
1493                 self._layout.addLayout(self._selectedUnitLayout)
1494                 self._layout.addWidget(self._unitsView)
1495
1496                 centralWidget = QtGui.QWidget()
1497                 centralWidget.setLayout(self._layout)
1498
1499                 self._window = QtGui.QMainWindow(parent)
1500                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1501                 maeqt.set_autorient(self._window, True)
1502                 maeqt.set_stackable(self._window, True)
1503                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1504                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1505                 self._window.setCentralWidget(centralWidget)
1506
1507                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1508                 if defaultUnitName:
1509                         self.select_unit(defaultUnitName)
1510                 else:
1511                         self._select_unit(0)
1512
1513                 self._sortActionGroup = QtGui.QActionGroup(None)
1514                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
1515                 self._sortByNameAction.setText("Sort By Name")
1516                 self._sortByNameAction.setStatusTip("Sort the units by name")
1517                 self._sortByNameAction.setToolTip("Sort the units by name")
1518                 self._sortByNameAction.setCheckable(True)
1519                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
1520                 self._sortByValueAction.setText("Sort By Value")
1521                 self._sortByValueAction.setStatusTip("Sort the units by value")
1522                 self._sortByValueAction.setToolTip("Sort the units by value")
1523                 self._sortByValueAction.setCheckable(True)
1524                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
1525                 self._sortByUnitAction.setText("Sort By Unit")
1526                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
1527                 self._sortByUnitAction.setToolTip("Sort the units by unit")
1528                 self._sortByUnitAction.setCheckable(True)
1529
1530                 if UnitData.NAME_COLUMN != 0:
1531                         # By default it sorts by he first column (name)
1532                         self._unitsModel.sort(UnitData.NAME_COLUMN)
1533                 self._sortByNameAction.setChecked(True)
1534
1535                 self._chooseFavoritesAction = QtGui.QAction(None)
1536                 self._chooseFavoritesAction.setText("Select Favorites")
1537                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1538                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1539
1540                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1541
1542                 self._previousUnitAction = QtGui.QAction(None)
1543                 self._previousUnitAction.setText("Previous Unit")
1544                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1545                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1546
1547                 self._nextUnitAction = QtGui.QAction(None)
1548                 self._nextUnitAction.setText("Next Unit")
1549                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1550                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1551
1552                 self._closeWindowAction = QtGui.QAction(None)
1553                 self._closeWindowAction.setText("Close Window")
1554                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1555                 self._closeWindowAction.triggered.connect(self._on_close_window)
1556
1557                 if IS_MAEMO:
1558                         self._window.addAction(self._closeWindowAction)
1559                         self._window.addAction(self._app.quitAction)
1560                         self._window.addAction(self._app.fullscreenAction)
1561
1562                         fileMenu = self._window.menuBar().addMenu("&Units")
1563                         fileMenu.addAction(self._chooseFavoritesAction)
1564
1565                         viewMenu = self._window.menuBar().addMenu("&View")
1566                         viewMenu.addAction(self._app.showFavoritesAction)
1567                         viewMenu.addAction(self._app.condensedAction)
1568                         viewMenu.addSeparator()
1569                         viewMenu.addAction(self._sortByNameAction)
1570                         viewMenu.addAction(self._sortByValueAction)
1571                         viewMenu.addAction(self._sortByUnitAction)
1572                         viewMenu.addSeparator()
1573                         viewMenu.addAction(self._app.jumpAction)
1574                         viewMenu.addAction(self._app.recentAction)
1575                 else:
1576                         fileMenu = self._window.menuBar().addMenu("&Units")
1577                         fileMenu.addAction(self._chooseFavoritesAction)
1578                         fileMenu.addAction(self._closeWindowAction)
1579                         fileMenu.addAction(self._app.quitAction)
1580
1581                         viewMenu = self._window.menuBar().addMenu("&View")
1582                         viewMenu.addAction(self._app.showFavoritesAction)
1583                         viewMenu.addAction(self._app.condensedAction)
1584                         viewMenu.addSeparator()
1585                         viewMenu.addAction(self._sortByNameAction)
1586                         viewMenu.addAction(self._sortByValueAction)
1587                         viewMenu.addAction(self._sortByUnitAction)
1588                         viewMenu.addSeparator()
1589                         viewMenu.addAction(self._app.jumpAction)
1590                         viewMenu.addAction(self._app.recentAction)
1591                         viewMenu.addSeparator()
1592                         viewMenu.addAction(self._app.fullscreenAction)
1593
1594                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1595                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1596                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1597
1598                 self._window.addAction(self._app.logAction)
1599                 self._window.addAction(self._nextUnitAction)
1600                 self._window.addAction(self._previousUnitAction)
1601                 self._window.addAction(self._chooseFavoritesAction)
1602
1603                 self._update_favorites()
1604                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1605                 self._window.show()
1606
1607         @property
1608         def window(self):
1609                 return self._window
1610
1611         def show(self):
1612                 for child in self.walk_children():
1613                         child.hide()
1614                 self._window.show()
1615
1616         def hide(self):
1617                 for child in self.walk_children():
1618                         child.hide()
1619                 self._window.hide()
1620
1621         def close(self):
1622                 for child in self.walk_children():
1623                         child.window.destroyed.disconnect(self._on_child_close)
1624                         child.close()
1625                 self._window.close()
1626
1627         def set_fullscreen(self, isFullscreen):
1628                 if isFullscreen:
1629                         self._window.showFullScreen()
1630                 else:
1631                         self._window.showNormal()
1632
1633         def select_unit(self, unitName):
1634                 index = self._unitsModel.index_unit(unitName)
1635                 self._select_unit(index)
1636
1637         def walk_children(self):
1638                 if self._favoritesWindow is not None:
1639                         yield self._favoritesWindow
1640
1641         def _update_favorites(self, force = False):
1642                 if self._app.showFavoritesAction.isChecked():
1643                         unitNames = list(self._unitsModel.get_unit_names())
1644                         for i, unitName in enumerate(unitNames):
1645                                 if unitName in self._app.get_hidden_units(self._categoryName):
1646                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1647                                 else:
1648                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1649                 else:
1650                         if force:
1651                                 for i in xrange(len(self._unitsModel)):
1652                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1653
1654         @misc_utils.log_exception(_moduleLogger)
1655         def _on_show_favorites(self, checked = True):
1656                 if checked:
1657                         unitNames = list(self._unitsModel.get_unit_names())
1658                         for i, unitName in enumerate(unitNames):
1659                                 if unitName in self._app.get_hidden_units(self._categoryName):
1660                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1661                 else:
1662                         for i in xrange(len(self._unitsModel)):
1663                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1664
1665         @misc_utils.log_exception(_moduleLogger)
1666         def _on_choose_favorites(self, obj = None):
1667                 assert self._favoritesWindow is None
1668                 self._favoritesWindow = FavoritesWindow(
1669                         self._window,
1670                         self._app,
1671                         unit_data.get_units(self._categoryName),
1672                         self._app.get_hidden_units(self._categoryName)
1673                 )
1674                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1675                 return self._favoritesWindow
1676
1677         @misc_utils.log_exception(_moduleLogger)
1678         def _on_close_favorites(self, obj = None):
1679                 self._favoritesWindow = None
1680                 self._update_favorites(force=True)
1681
1682         @misc_utils.log_exception(_moduleLogger)
1683         def _on_previous_unit(self, checked = True):
1684                 self._select_unit(self._selectedIndex - 1)
1685
1686         @misc_utils.log_exception(_moduleLogger)
1687         def _on_next_unit(self, checked = True):
1688                 self._select_unit(self._selectedIndex + 1)
1689
1690         @misc_utils.log_exception(_moduleLogger)
1691         def _on_close_window(self, checked = True):
1692                 self.close()
1693
1694         @misc_utils.log_exception(_moduleLogger)
1695         def _on_sort_by_name(self, checked = False):
1696                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1697
1698         @misc_utils.log_exception(_moduleLogger)
1699         def _on_sort_by_value(self, checked = False):
1700                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1701
1702         @misc_utils.log_exception(_moduleLogger)
1703         def _on_sort_by_unit(self, checked = False):
1704                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1705
1706         @misc_utils.log_exception(_moduleLogger)
1707         def _on_unit_clicked(self, index):
1708                 self._select_unit(index.row())
1709
1710         @misc_utils.log_exception(_moduleLogger)
1711         def _on_value_edited(self, *args):
1712                 userInput = self._selectedUnitValue.text()
1713                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1714                 self._update_favorites()
1715
1716         def _select_unit(self, index):
1717                 unit = self._unitsModel.get_unit(index)
1718                 self._selectedUnitName.setText(unit.name)
1719                 self._selectedUnitValue.setText(str(unit.value))
1720                 self._selectedUnitSymbol.setText(unit.unit)
1721
1722                 self._selectedIndex = index
1723                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1724                 self._unitsView.scrollTo(qindex)
1725                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1726
1727
1728 def run_gonvert():
1729         app = QtGui.QApplication([])
1730         handle = Gonvert(app)
1731         return app.exec_()
1732
1733
1734 if __name__ == "__main__":
1735         logging.basicConfig(level = logging.DEBUG)
1736         try:
1737                 os.makedirs(constants._data_path_)
1738         except OSError, e:
1739                 if e.errno != 17:
1740                         raise
1741
1742         val = run_gonvert()
1743         sys.exit(val)