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                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 384                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 385                 self._window.setCentralWidget(centralWidget)
 386
 387                 self._closeWindowAction = QtGui.QAction(None)
 388                 self._closeWindowAction.setText("Close")
 389                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 390                 self._closeWindowAction.triggered.connect(self._on_close_window)
 391
 392                 if IS_MAEMO:
 393                         self._window.addAction(self._closeWindowAction)
 394                         self._window.addAction(self._app.quitAction)
 395                         self._window.addAction(self._app.fullscreenAction)
 396                 else:
 397                         fileMenu = self._window.menuBar().addMenu("&Units")
 398                         fileMenu.addAction(self._closeWindowAction)
 399                         fileMenu.addAction(self._app.quitAction)
 400
 401                         viewMenu = self._window.menuBar().addMenu("&View")
 402                         viewMenu.addAction(self._app.fullscreenAction)
 403
 404                 self._window.addAction(self._app.logAction)
 405
 406                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 407                 self._window.show()
 408
 409         @property
 410         def window(self):
 411                 return self._window
 412
 413         def show(self):
 414                 self._window.show()
 415
 416         def hide(self):
 417                 self._window.hide()
 418
 419         def close(self):
 420                 self._window.close()
 421
 422         def set_fullscreen(self, isFullscreen):
 423                 if isFullscreen:
 424                         self._window.showFullScreen()
 425                 else:
 426                         self._window.showNormal()
 427
 428         @misc_utils.log_exception(_moduleLogger)
 429         def _on_close_window(self, checked = True):
 430                 self.close()
 431
 432         @misc_utils.log_exception(_moduleLogger)
 433         def _on_result_clicked(self, item, columnIndex):
 434                 categoryName = unicode(item.text(0))
 435                 unitName = unicode(item.text(1))
 436                 catWindow = self._app.request_category()
 437                 unitsWindow = catWindow.select_category(categoryName)
 438                 unitsWindow.select_unit(unitName)
 439                 self.close()
 440
 441         @misc_utils.log_exception(_moduleLogger)
 442         def _on_search_edited(self, *args):
 443                 userInput = self._searchEntry.text()
 444                 if len(userInput) <  self.MINIMAL_ENTRY:
 445                         return
 446
 447                 self._resultsBox.clear()
 448                 lowerInput = str(userInput).lower()
 449                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 450                         units = unit_data.get_units(category)
 451                         for unitIndex, unit in enumerate(units):
 452                                 loweredUnit = unit.lower()
 453                                 if lowerInput in loweredUnit:
 454                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 455                                         twi.setText(0, category)
 456                                         twi.setText(1, unit)
 457
 458
 459 class Recent(object):
 460
 461         def __init__(self, parent, app):
 462                 self._app = app
 463
 464                 self._resultsBox = QtGui.QTreeWidget()
 465                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 466                 self._resultsBox.setHeaderHidden(True)
 467                 if not IS_MAEMO:
 468                         self._resultsBox.setAlternatingRowColors(True)
 469                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 470
 471                 self._layout = QtGui.QVBoxLayout()
 472                 self._layout.addWidget(self._resultsBox)
 473
 474                 centralWidget = QtGui.QWidget()
 475                 centralWidget.setLayout(self._layout)
 476
 477                 self._window = QtGui.QMainWindow(parent)
 478                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 479                 maeqt.set_autorient(self._window, True)
 480                 maeqt.set_stackable(self._window, True)
 481                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 482                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 483                 self._window.setCentralWidget(centralWidget)
 484
 485                 for cat, unit in self._app.get_recent():
 486                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 487                         twi.setText(0, cat)
 488                         twi.setText(1, unit)
 489
 490                 self._closeWindowAction = QtGui.QAction(None)
 491                 self._closeWindowAction.setText("Close")
 492                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 493                 self._closeWindowAction.triggered.connect(self._on_close_window)
 494
 495                 if IS_MAEMO:
 496                         self._window.addAction(self._closeWindowAction)
 497                         self._window.addAction(self._app.quitAction)
 498                         self._window.addAction(self._app.fullscreenAction)
 499                 else:
 500                         fileMenu = self._window.menuBar().addMenu("&Units")
 501                         fileMenu.addAction(self._closeWindowAction)
 502                         fileMenu.addAction(self._app.quitAction)
 503
 504                         viewMenu = self._window.menuBar().addMenu("&View")
 505                         viewMenu.addAction(self._app.fullscreenAction)
 506
 507                 self._window.addAction(self._app.logAction)
 508
 509                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 510                 self._window.show()
 511
 512         @property
 513         def window(self):
 514                 return self._window
 515
 516         def show(self):
 517                 self._window.show()
 518
 519         def hide(self):
 520                 self._window.hide()
 521
 522         def close(self):
 523                 self._window.close()
 524
 525         def set_fullscreen(self, isFullscreen):
 526                 if isFullscreen:
 527                         self._window.showFullScreen()
 528                 else:
 529                         self._window.showNormal()
 530
 531         @misc_utils.log_exception(_moduleLogger)
 532         def _on_close_window(self, checked = True):
 533                 self.close()
 534
 535         @misc_utils.log_exception(_moduleLogger)
 536         def _on_result_clicked(self, item, columnIndex):
 537                 categoryName = unicode(item.text(0))
 538                 unitName = unicode(item.text(1))
 539                 catWindow = self._app.request_category()
 540                 unitsWindow = catWindow.select_category(categoryName)
 541                 unitsWindow.select_unit(unitName)
 542                 self.close()
 543
 544
 545 class QuickConvert(object):
 546
 547         def __init__(self, parent, app):
 548                 self._app = app
 549                 self._categoryName = ""
 550                 self._inputUnitName = ""
 551                 self._outputUnitName = ""
 552                 self._unitNames = []
 553                 self._favoritesWindow = None
 554
 555                 self._inputUnitValue = QtGui.QLineEdit()
 556                 self._inputUnitValue.setInputMethodHints(QtCore.Qt.ImhPreferNumbers)
 557                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 558                 self._inputUnitSymbol = QtGui.QLabel()
 559
 560                 self._outputUnitValue = QtGui.QLabel()
 561                 self._outputUnitSymbol = QtGui.QLabel()
 562
 563                 self._conversionLayout = QtGui.QHBoxLayout()
 564                 self._conversionLayout.addWidget(self._inputUnitValue)
 565                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 566                 self._conversionLayout.addWidget(self._outputUnitValue)
 567                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 568
 569                 self._categoryView = QtGui.QTreeWidget()
 570                 self._categoryView.setHeaderLabels(["Categories"])
 571                 self._categoryView.setHeaderHidden(False)
 572                 if not IS_MAEMO:
 573                         self._categoryView.setAlternatingRowColors(True)
 574                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 575                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 576                 for catName in unit_data.UNIT_CATEGORIES:
 577                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 578                         twi.setText(0, catName)
 579                 self._categorySelection = self._categoryView.selectionModel()
 580                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 581
 582                 self._inputView = QtGui.QTreeWidget()
 583                 self._inputView.setHeaderLabels(["From", "Name"])
 584                 self._inputView.setHeaderHidden(False)
 585                 self._inputView.header().hideSection(1)
 586                 if not IS_MAEMO:
 587                         self._inputView.setAlternatingRowColors(True)
 588                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 589                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 590                 self._inputSelection = self._inputView.selectionModel()
 591                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 592
 593                 self._outputView = QtGui.QTreeWidget()
 594                 self._outputView.setHeaderLabels(["To", "Name"])
 595                 self._outputView.setHeaderHidden(False)
 596                 self._outputView.header().hideSection(1)
 597                 if not IS_MAEMO:
 598                         self._outputView.setAlternatingRowColors(True)
 599                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 600                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 601                 self._outputWidgets = []
 602                 self._outputSelection = self._outputView.selectionModel()
 603                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 604
 605                 self._selectionLayout = QtGui.QHBoxLayout()
 606                 self._selectionLayout.addWidget(self._categoryView)
 607                 self._selectionLayout.addWidget(self._inputView)
 608                 self._selectionLayout.addWidget(self._outputView)
 609
 610                 self._layout = QtGui.QVBoxLayout()
 611                 self._layout.addLayout(self._conversionLayout)
 612                 self._layout.addLayout(self._selectionLayout)
 613
 614                 centralWidget = QtGui.QWidget()
 615                 centralWidget.setLayout(self._layout)
 616
 617                 self._window = QtGui.QMainWindow(parent)
 618                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 619                 maeqt.set_autorient(self._window, True)
 620                 maeqt.set_stackable(self._window, True)
 621                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 622                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 623                 self._window.setCentralWidget(centralWidget)
 624
 625                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 626                 self._chooseCatFavoritesAction.setText("Select Categories")
 627                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 628
 629                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 630                 self._chooseUnitFavoritesAction.setText("Select Units")
 631                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 632                 self._chooseUnitFavoritesAction.setEnabled(False)
 633
 634                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 635
 636                 self._closeWindowAction = QtGui.QAction(None)
 637                 self._closeWindowAction.setText("Close Window")
 638                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 639                 self._closeWindowAction.triggered.connect(self._on_close_window)
 640
 641                 if IS_MAEMO:
 642                         self._window.addAction(self._closeWindowAction)
 643                         self._window.addAction(self._app.quitAction)
 644                         self._window.addAction(self._app.fullscreenAction)
 645
 646                         fileMenu = self._window.menuBar().addMenu("&Units")
 647                         fileMenu.addAction(self._chooseCatFavoritesAction)
 648                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 649
 650                         viewMenu = self._window.menuBar().addMenu("&View")
 651                         viewMenu.addAction(self._app.showFavoritesAction)
 652                         viewMenu.addAction(self._app.condensedAction)
 653                         viewMenu.addSeparator()
 654                         viewMenu.addAction(self._app.jumpAction)
 655                         viewMenu.addAction(self._app.recentAction)
 656                 else:
 657                         fileMenu = self._window.menuBar().addMenu("&Units")
 658                         fileMenu.addAction(self._chooseCatFavoritesAction)
 659                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 660                         fileMenu.addAction(self._closeWindowAction)
 661                         fileMenu.addAction(self._app.quitAction)
 662
 663                         viewMenu = self._window.menuBar().addMenu("&View")
 664                         viewMenu.addAction(self._app.showFavoritesAction)
 665                         viewMenu.addAction(self._app.condensedAction)
 666                         viewMenu.addSeparator()
 667                         viewMenu.addAction(self._app.jumpAction)
 668                         viewMenu.addAction(self._app.recentAction)
 669                         viewMenu.addSeparator()
 670                         viewMenu.addAction(self._app.fullscreenAction)
 671
 672                 self._window.addAction(self._app.logAction)
 673
 674                 self._update_favorites()
 675                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 676                 self._window.show()
 677
 678         @property
 679         def window(self):
 680                 return self._window
 681
 682         def show(self):
 683                 self._window.show()
 684
 685         def hide(self):
 686                 self._window.hide()
 687
 688         def close(self):
 689                 self._window.close()
 690
 691         def set_fullscreen(self, isFullscreen):
 692                 if isFullscreen:
 693                         self._window.showFullScreen()
 694                 else:
 695                         self._window.showNormal()
 696
 697         def select_category(self, categoryName):
 698                 self._inputUnitValue.setText("")
 699                 self._inputUnitSymbol.setText("")
 700                 self._inputView.clear()
 701                 self._outputUnitValue.setText("")
 702                 self._outputUnitSymbol.setText("")
 703                 self._outputView.clear()
 704                 self._categoryName = categoryName
 705                 self._chooseUnitFavoritesAction.setEnabled(True)
 706
 707                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 708                 self._unitNames = list(unit_data.get_units(categoryName))
 709                 self._unitNames.sort()
 710                 for key in self._unitNames:
 711                         conversion, unit, description = unitData[key]
 712                         if not unit:
 713                                 unit = key
 714
 715                         twi = QtGui.QTreeWidgetItem(self._inputView)
 716                         twi.setText(0, unit)
 717                         twi.setText(1, key)
 718
 719                         twi = QtGui.QTreeWidgetItem(self._outputView)
 720                         twi.setText(0, unit)
 721                         twi.setText(1, key)
 722
 723                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 724                 rootIndex = self._categoryView.rootIndex()
 725                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 726                 self._categoryView.scrollTo(currentIndex)
 727
 728                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 729                 if defaultInputUnitName:
 730                         self.select_input(defaultInputUnitName)
 731                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 732                         assert defaultOutputUnitName
 733                         self.select_output(defaultOutputUnitName)
 734
 735                 return self
 736
 737         def select_unit(self, name):
 738                 self.select_input(name)
 739
 740         def select_input(self, name):
 741                 self._app.add_recent(self._categoryName, name)
 742                 self._inputUnitName = name
 743
 744                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 745                 conversion, unit, description = unitData[name]
 746
 747                 self._inputUnitSymbol.setText(unit if unit else name)
 748
 749                 i = self._unitNames.index(name)
 750                 rootIndex = self._inputView.rootIndex()
 751                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 752                 self._inputView.scrollTo(currentIndex)
 753
 754         def select_output(self, name):
 755                 # Add the output to recent but don't make things weird by making it the most recent
 756                 self._app.add_recent(self._categoryName, name)
 757                 self._app.add_recent(self._categoryName, self._inputUnitName)
 758                 self._outputUnitName = name
 759
 760                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 761                 conversion, unit, description = unitData[name]
 762
 763                 self._outputUnitSymbol.setText(unit if unit else name)
 764
 765                 i = self._unitNames.index(name)
 766                 rootIndex = self._outputView.rootIndex()
 767                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 768                 self._outputView.scrollTo(currentIndex)
 769
 770         def _sanitize_value(self, userEntry):
 771                 if self._categoryName == "Computer Numbers":
 772                         if userEntry == '':
 773                                 value = '0'
 774                         else:
 775                                 value = userEntry
 776                 else:
 777                         if userEntry == '':
 778                                 value = 0.0
 779                         else:
 780                                 value = float(userEntry)
 781                 return value
 782
 783         def _update_favorites(self):
 784                 if self._app.showFavoritesAction.isChecked():
 785                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 786                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 787                                 if catName in self._app.hiddenCategories:
 788                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 789                                 else:
 790                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 791
 792                         for i, unitName in enumerate(self._unitNames):
 793                                 if unitName in self._app.get_hidden_units(self._categoryName):
 794                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 795                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 796                                 else:
 797                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 798                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 799                 else:
 800                         for i in xrange(self._categoryView.topLevelItemCount()):
 801                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 802
 803                         for i in xrange(len(self._unitNames)):
 804                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 805                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 806
 807         @misc_utils.log_exception(_moduleLogger)
 808         def _on_close_window(self, checked = True):
 809                 self.close()
 810
 811         @misc_utils.log_exception(_moduleLogger)
 812         def _on_show_favorites(self, checked = True):
 813                 if checked:
 814                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 815                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 816                                 if catName in self._app.hiddenCategories:
 817                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 818
 819                         for i, unitName in enumerate(self._unitNames):
 820                                 if unitName in self._app.get_hidden_units(self._categoryName):
 821                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 822                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 823                 else:
 824                         for i in xrange(self._categoryView.topLevelItemCount()):
 825                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 826
 827                         for i in xrange(len(self._unitNames)):
 828                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 829                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 830
 831         @misc_utils.log_exception(_moduleLogger)
 832         def _on_choose_category_favorites(self, obj = None):
 833                 assert self._favoritesWindow is None
 834                 self._favoritesWindow = FavoritesWindow(
 835                         self._window,
 836                         self._app,
 837                         unit_data.UNIT_CATEGORIES,
 838                         self._app.hiddenCategories
 839                 )
 840                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 841                 return self._favoritesWindow
 842
 843         @misc_utils.log_exception(_moduleLogger)
 844         def _on_choose_unit_favorites(self, obj = None):
 845                 assert self._favoritesWindow is None
 846                 self._favoritesWindow = FavoritesWindow(
 847                         self._window,
 848                         self._app,
 849                         unit_data.get_units(self._categoryName),
 850                         self._app.get_hidden_units(self._categoryName)
 851                 )
 852                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 853                 return self._favoritesWindow
 854
 855         @misc_utils.log_exception(_moduleLogger)
 856         def _on_close_favorites(self, obj = None):
 857                 self._favoritesWindow = None
 858                 self._update_favorites()
 859
 860         @misc_utils.log_exception(_moduleLogger)
 861         def _on_value_edited(self, *args):
 862                 assert self._categoryName
 863                 assert self._inputUnitName
 864                 assert self._outputUnitName
 865
 866                 userInput = str(self._inputUnitValue.text())
 867                 value = self._sanitize_value(userInput)
 868
 869                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 870                 inputConversion, _, _ = unitData[self._inputUnitName]
 871                 outputConversion, _, _ = unitData[self._outputUnitName]
 872
 873                 func, arg = inputConversion
 874                 base = func.to_base(value, arg)
 875
 876                 func, arg = outputConversion
 877                 newValue = func.from_base(base, arg)
 878                 self._outputUnitValue.setText(str(newValue))
 879
 880         @misc_utils.log_exception(_moduleLogger)
 881         def _on_category_selection_changed(self, selected, deselected):
 882                 selectedNames = [
 883                         str(item.text(0))
 884                         for item in self._categoryView.selectedItems()
 885                 ]
 886                 assert len(selectedNames) == 1
 887                 self.select_category(selectedNames[0])
 888
 889         @misc_utils.log_exception(_moduleLogger)
 890         def _on_input_selection_changed(self, selected, deselected):
 891                 selectedNames = [
 892                         str(item.text(1))
 893                         for item in self._inputView.selectedItems()
 894                 ]
 895                 if selectedNames:
 896                         assert len(selectedNames) == 1
 897                         name = selectedNames[0]
 898                         self.select_input(name)
 899                 else:
 900                         pass
 901
 902         @misc_utils.log_exception(_moduleLogger)
 903         def _on_output_selection_changed(self, selected, deselected):
 904                 selectedNames = [
 905                         str(item.text(1))
 906                         for item in self._outputView.selectedItems()
 907                 ]
 908                 if selectedNames:
 909                         assert len(selectedNames) == 1
 910                         name = selectedNames[0]
 911                         self.select_output(name)
 912                 else:
 913                         pass
 914
 915
 916 class FavoritesWindow(object):
 917
 918         def __init__(self, parent, app, source, hidden):
 919                 self._app = app
 920                 self._source = list(source)
 921                 self._hidden = hidden
 922
 923                 self._categories = QtGui.QTreeWidget()
 924                 self._categories.setHeaderLabels(["Categories"])
 925                 self._categories.setHeaderHidden(True)
 926                 if not IS_MAEMO:
 927                         self._categories.setAlternatingRowColors(True)
 928                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 929                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 930                 self._childWidgets = []
 931                 for catName in self._source:
 932                         twi = QtGui.QTreeWidgetItem(self._categories)
 933                         twi.setText(0, catName)
 934                         self._childWidgets.append(twi)
 935                         if catName not in self._hidden:
 936                                 self._categories.setItemSelected(twi, True)
 937                 self._selection = self._categories.selectionModel()
 938                 self._selection.selectionChanged.connect(self._on_selection_changed)
 939
 940                 self._allButton = QtGui.QPushButton("All")
 941                 self._allButton.clicked.connect(self._on_select_all)
 942                 self._invertButton = QtGui.QPushButton("Invert")
 943                 self._invertButton.clicked.connect(self._on_invert_selection)
 944                 self._noneButton = QtGui.QPushButton("None")
 945                 self._noneButton.clicked.connect(self._on_select_none)
 946
 947                 self._buttonLayout = QtGui.QHBoxLayout()
 948                 self._buttonLayout.addWidget(self._allButton)
 949                 self._buttonLayout.addWidget(self._invertButton)
 950                 self._buttonLayout.addWidget(self._noneButton)
 951
 952                 self._layout = QtGui.QVBoxLayout()
 953                 self._layout.addWidget(self._categories)
 954                 self._layout.addLayout(self._buttonLayout)
 955
 956                 centralWidget = QtGui.QWidget()
 957                 centralWidget.setLayout(self._layout)
 958
 959                 self._window = QtGui.QMainWindow(parent)
 960                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 961                 maeqt.set_autorient(self._window, True)
 962                 maeqt.set_stackable(self._window, True)
 963                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 964                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 965                 self._window.setCentralWidget(centralWidget)
 966
 967                 self._closeWindowAction = QtGui.QAction(None)
 968                 self._closeWindowAction.setText("Close")
 969                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 970                 self._closeWindowAction.triggered.connect(self._on_close_window)
 971
 972                 if IS_MAEMO:
 973                         self._window.addAction(self._closeWindowAction)
 974                         self._window.addAction(self._app.quitAction)
 975                         self._window.addAction(self._app.fullscreenAction)
 976                 else:
 977                         fileMenu = self._window.menuBar().addMenu("&Units")
 978                         fileMenu.addAction(self._closeWindowAction)
 979                         fileMenu.addAction(self._app.quitAction)
 980
 981                         viewMenu = self._window.menuBar().addMenu("&View")
 982                         viewMenu.addAction(self._app.fullscreenAction)
 983
 984                 self._window.addAction(self._app.logAction)
 985
 986                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 987                 self._window.show()
 988
 989         @property
 990         def window(self):
 991                 return self._window
 992
 993         def show(self):
 994                 self._window.show()
 995
 996         def hide(self):
 997                 self._window.hide()
 998
 999         def close(self):
1000                 self._window.close()
1001
1002         def set_fullscreen(self, isFullscreen):
1003                 if isFullscreen:
1004                         self._window.showFullScreen()
1005                 else:
1006                         self._window.showNormal()
1007
1008         @misc_utils.log_exception(_moduleLogger)
1009         def _on_select_all(self, checked = False):
1010                 for child in self._childWidgets:
1011                         self._categories.setItemSelected(child, True)
1012
1013         @misc_utils.log_exception(_moduleLogger)
1014         def _on_invert_selection(self, checked = False):
1015                 for child in self._childWidgets:
1016                         isSelected = self._categories.isItemSelected(child)
1017                         self._categories.setItemSelected(child, not isSelected)
1018
1019         @misc_utils.log_exception(_moduleLogger)
1020         def _on_select_none(self, checked = False):
1021                 for child in self._childWidgets:
1022                         self._categories.setItemSelected(child, False)
1023
1024         @misc_utils.log_exception(_moduleLogger)
1025         def _on_selection_changed(self, selected, deselected):
1026                 self._hidden.clear()
1027                 selectedNames = set(
1028                         str(item.text(0))
1029                         for item in self._categories.selectedItems()
1030                 )
1031                 for name in self._source:
1032                         if name not in selectedNames:
1033                                 self._hidden.add(name)
1034
1035         @misc_utils.log_exception(_moduleLogger)
1036         def _on_close_window(self, checked = True):
1037                 self.close()
1038
1039
1040 class CategoryWindow(object):
1041
1042         def __init__(self, parent, app):
1043                 self._app = app
1044                 self._unitWindow = None
1045                 self._favoritesWindow = None
1046
1047                 self._categories = QtGui.QTreeWidget()
1048                 self._categories.setHeaderLabels(["Categories"])
1049                 self._categories.itemClicked.connect(self._on_category_clicked)
1050                 self._categories.setHeaderHidden(True)
1051                 if not IS_MAEMO:
1052                         self._categories.setAlternatingRowColors(True)
1053                 for catName in unit_data.UNIT_CATEGORIES:
1054                         twi = QtGui.QTreeWidgetItem(self._categories)
1055                         twi.setText(0, catName)
1056
1057                 self._layout = QtGui.QVBoxLayout()
1058                 self._layout.addWidget(self._categories)
1059
1060                 centralWidget = QtGui.QWidget()
1061                 centralWidget.setLayout(self._layout)
1062
1063                 self._window = QtGui.QMainWindow(parent)
1064                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1065                 maeqt.set_autorient(self._window, True)
1066                 maeqt.set_stackable(self._window, True)
1067                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
1068                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
1069                 self._window.setCentralWidget(centralWidget)
1070
1071                 self._chooseFavoritesAction = QtGui.QAction(None)
1072                 self._chooseFavoritesAction.setText("Select Favorites")
1073                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1074                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1075
1076                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1077
1078                 self._closeWindowAction = QtGui.QAction(None)
1079                 self._closeWindowAction.setText("Close")
1080                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1081                 self._closeWindowAction.triggered.connect(self._on_close_window)
1082
1083                 if IS_MAEMO:
1084                         fileMenu = self._window.menuBar().addMenu("&Units")
1085                         fileMenu.addAction(self._chooseFavoritesAction)
1086
1087                         viewMenu = self._window.menuBar().addMenu("&View")
1088                         viewMenu.addAction(self._app.showFavoritesAction)
1089                         viewMenu.addAction(self._app.condensedAction)
1090                         viewMenu.addSeparator()
1091                         viewMenu.addAction(self._app.jumpAction)
1092                         viewMenu.addAction(self._app.recentAction)
1093
1094                         self._window.addAction(self._closeWindowAction)
1095                         self._window.addAction(self._app.quitAction)
1096                         self._window.addAction(self._app.fullscreenAction)
1097                 else:
1098                         fileMenu = self._window.menuBar().addMenu("&Units")
1099                         fileMenu.addAction(self._chooseFavoritesAction)
1100                         fileMenu.addAction(self._closeWindowAction)
1101                         fileMenu.addAction(self._app.quitAction)
1102
1103                         viewMenu = self._window.menuBar().addMenu("&View")
1104                         viewMenu.addAction(self._app.showFavoritesAction)
1105                         viewMenu.addAction(self._app.condensedAction)
1106                         viewMenu.addSeparator()
1107                         viewMenu.addAction(self._app.jumpAction)
1108                         viewMenu.addAction(self._app.recentAction)
1109                         viewMenu.addSeparator()
1110                         viewMenu.addAction(self._app.fullscreenAction)
1111
1112                 self._window.addAction(self._app.logAction)
1113
1114                 self._update_favorites()
1115                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1116                 self._window.show()
1117
1118         @property
1119         def window(self):
1120                 return self._window
1121
1122         def walk_children(self):
1123                 if self._unitWindow is not None:
1124                         yield self._unitWindow
1125                 if self._favoritesWindow is not None:
1126                         yield self._favoritesWindow
1127
1128         def show(self):
1129                 for child in self.walk_children():
1130                         child.show()
1131                 self._window.show()
1132
1133         def hide(self):
1134                 for child in self.walk_children():
1135                         child.hide()
1136                 self._window.hide()
1137
1138         def close(self):
1139                 for child in self.walk_children():
1140                         child.window.destroyed.disconnect(self._on_child_close)
1141                         child.close()
1142                 self._window.close()
1143
1144         def select_category(self, categoryName):
1145                 for child in self.walk_children():
1146                         child.window.destroyed.disconnect(self._on_child_close)
1147                         child.close()
1148                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
1149                 self._unitWindow.window.destroyed.connect(self._on_child_close)
1150
1151                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
1152                 rootIndex = self._categories.rootIndex()
1153                 currentIndex = self._categories.model().index(i, 0, rootIndex)
1154                 self._categories.scrollTo(currentIndex)
1155                 return self._unitWindow
1156
1157         def set_fullscreen(self, isFullscreen):
1158                 if isFullscreen:
1159                         self._window.showFullScreen()
1160                 else:
1161                         self._window.showNormal()
1162                 for child in self.walk_children():
1163                         child.set_fullscreen(isFullscreen)
1164
1165         def _update_favorites(self):
1166                 if self._app.showFavoritesAction.isChecked():
1167                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1168                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1169                                 if catName in self._app.hiddenCategories:
1170                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1171                                 else:
1172                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1173                 else:
1174                         for i in xrange(self._categories.topLevelItemCount()):
1175                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1176
1177         @misc_utils.log_exception(_moduleLogger)
1178         def _on_show_favorites(self, checked = True):
1179                 if checked:
1180                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1181                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1182                                 if catName in self._app.hiddenCategories:
1183                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1184                 else:
1185                         for i in xrange(self._categories.topLevelItemCount()):
1186                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1187
1188         @misc_utils.log_exception(_moduleLogger)
1189         def _on_choose_favorites(self, obj = None):
1190                 assert self._favoritesWindow is None
1191                 self._favoritesWindow = FavoritesWindow(
1192                         self._window,
1193                         self._app,
1194                         unit_data.UNIT_CATEGORIES,
1195                         self._app.hiddenCategories
1196                 )
1197                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1198                 return self._favoritesWindow
1199
1200         @misc_utils.log_exception(_moduleLogger)
1201         def _on_close_favorites(self, obj = None):
1202                 self._favoritesWindow = None
1203                 self._update_favorites()
1204
1205         @misc_utils.log_exception(_moduleLogger)
1206         def _on_child_close(self, obj = None):
1207                 self._unitWindow = None
1208
1209         @misc_utils.log_exception(_moduleLogger)
1210         def _on_close_window(self, checked = True):
1211                 self.close()
1212
1213         @misc_utils.log_exception(_moduleLogger)
1214         def _on_category_clicked(self, item, columnIndex):
1215                 categoryName = unicode(item.text(0))
1216                 self.select_category(categoryName)
1217
1218
1219 class UnitData(object):
1220
1221         HEADERS = ["Name", "Value", "", "Unit"]
1222         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1223         NAME_COLUMN = 0
1224         VALUE_COLUMN_0 = 1
1225         VALUE_COLUMN_1 = 2
1226         UNIT_COLUMN = 3
1227
1228         def __init__(self, name, unit, description, conversion):
1229                 self._name = name
1230                 self._unit = unit
1231                 self._description = description
1232                 self._conversion = conversion
1233
1234                 self._value = 0.0
1235                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1236
1237         @property
1238         def name(self):
1239                 return self._name
1240
1241         @property
1242         def value(self):
1243                 return self._value
1244
1245         def update_value(self, newValue):
1246                 self._value = newValue
1247                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1248
1249         @property
1250         def unit(self):
1251                 return self._unit
1252
1253         @property
1254         def conversion(self):
1255                 return self._conversion
1256
1257         def data(self, column):
1258                 try:
1259                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1260                 except IndexError:
1261                         return None
1262
1263
1264 class UnitModel(QtCore.QAbstractItemModel):
1265
1266         def __init__(self, categoryName, parent=None):
1267                 super(UnitModel, self).__init__(parent)
1268                 self._categoryName = categoryName
1269                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1270
1271                 self._children = []
1272                 for key in unit_data.get_units(self._categoryName):
1273                         conversion, unit, description = self._unitData[key]
1274                         self._children.append(UnitData(key, unit, description, conversion))
1275                 self._sortSettings = None
1276
1277         @misc_utils.log_exception(_moduleLogger)
1278         def columnCount(self, parent):
1279                 if parent.isValid():
1280                         return 0
1281                 else:
1282                         return len(UnitData.HEADERS)
1283
1284         @misc_utils.log_exception(_moduleLogger)
1285         def data(self, index, role):
1286                 if not index.isValid():
1287                         return None
1288                 elif role == QtCore.Qt.TextAlignmentRole:
1289                         return UnitData.ALIGNMENT[index.column()]
1290                 elif role != QtCore.Qt.DisplayRole:
1291                         return None
1292
1293                 item = index.internalPointer()
1294                 if isinstance(item, UnitData):
1295                         return item.data(index.column())
1296                 elif item is UnitData.HEADERS:
1297                         return item[index.column()]
1298
1299         @misc_utils.log_exception(_moduleLogger)
1300         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1301                 self._sortSettings = column, order
1302                 isReverse = order == QtCore.Qt.AscendingOrder
1303                 if column == UnitData.NAME_COLUMN:
1304                         key_func = lambda item: item.name
1305                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1306                         key_func = lambda item: item.value
1307                 elif column == UnitData.UNIT_COLUMN:
1308                         key_func = lambda item: item.unit
1309                 self._children.sort(key=key_func, reverse = isReverse)
1310
1311                 self._all_changed()
1312
1313         @misc_utils.log_exception(_moduleLogger)
1314         def flags(self, index):
1315                 if not index.isValid():
1316                         return QtCore.Qt.NoItemFlags
1317
1318                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1319
1320         @misc_utils.log_exception(_moduleLogger)
1321         def headerData(self, section, orientation, role):
1322                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1323                         return UnitData.HEADERS[section]
1324
1325                 return None
1326
1327         @misc_utils.log_exception(_moduleLogger)
1328         def index(self, row, column, parent):
1329                 if not self.hasIndex(row, column, parent):
1330                         return QtCore.QModelIndex()
1331
1332                 if parent.isValid():
1333                         return QtCore.QModelIndex()
1334
1335                 parentItem = UnitData.HEADERS
1336                 childItem = self._children[row]
1337                 if childItem:
1338                         return self.createIndex(row, column, childItem)
1339                 else:
1340                         return QtCore.QModelIndex()
1341
1342         @misc_utils.log_exception(_moduleLogger)
1343         def parent(self, index):
1344                 if not index.isValid():
1345                         return QtCore.QModelIndex()
1346
1347                 childItem = index.internalPointer()
1348                 if isinstance(childItem, UnitData):
1349                         return QtCore.QModelIndex()
1350                 elif childItem is UnitData.HEADERS:
1351                         return None
1352
1353         @misc_utils.log_exception(_moduleLogger)
1354         def rowCount(self, parent):
1355                 if 0 < parent.column():
1356                         return 0
1357
1358                 if not parent.isValid():
1359                         return len(self._children)
1360                 else:
1361                         return len(self._children)
1362
1363         def get_unit(self, index):
1364                 assert 0 <= index
1365                 return self._children[index]
1366
1367         def get_unit_names(self):
1368                 for child in self._children:
1369                         yield child.name
1370
1371         def index_unit(self, unitName):
1372                 for i, child in enumerate(self._children):
1373                         if child.name == unitName:
1374                                 return i
1375                 else:
1376                         raise RuntimeError("Unit not found")
1377
1378         def update_values(self, fromIndex, userInput):
1379                 value = self._sanitize_value(userInput)
1380                 func, arg = self._children[fromIndex].conversion
1381                 base = func.to_base(value, arg)
1382                 for i, child in enumerate(self._children):
1383                         if i == fromIndex:
1384                                 continue
1385                         func, arg = child.conversion
1386                         newValue = func.from_base(base, arg)
1387                         child.update_value(newValue)
1388
1389                 if (
1390                         self._sortSettings is not None and
1391                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1392                 ):
1393                         # Sort takes care of marking everything as changed
1394                         self.sort(*self._sortSettings)
1395                 else:
1396                         self._values_changed()
1397
1398         def __len__(self):
1399                 return len(self._children)
1400
1401         def _values_changed(self):
1402                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1403                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1404                 self.dataChanged.emit(topLeft, bottomRight)
1405
1406         def _all_changed(self):
1407                 topLeft = self.createIndex(0, 0, self._children[0])
1408                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1409                 self.dataChanged.emit(topLeft, bottomRight)
1410
1411         def _sanitize_value(self, userEntry):
1412                 if self._categoryName == "Computer Numbers":
1413                         if userEntry == '':
1414                                 value = '0'
1415                         else:
1416                                 value = userEntry
1417                 else:
1418                         if userEntry == '':
1419                                 value = 0.0
1420                         else:
1421                                 value = float(userEntry)
1422                 return value
1423
1424
1425 class UnitWindow(object):
1426
1427         def __init__(self, parent, category, app):
1428                 self._app = app
1429                 self._categoryName = category
1430                 self._selectedIndex = 0
1431                 self._favoritesWindow = None
1432
1433                 self._selectedUnitName = QtGui.QLabel()
1434                 self._selectedUnitValue = QtGui.QLineEdit()
1435                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1436                 maeqt.mark_numbers_preferred(self._selectedUnitValue)
1437                 self._selectedUnitSymbol = QtGui.QLabel()
1438
1439                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1440                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1441                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1442                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1443
1444                 self._unitsModel = UnitModel(self._categoryName)
1445                 self._unitsView = QtGui.QTreeView()
1446                 self._unitsView.setModel(self._unitsModel)
1447                 self._unitsView.clicked.connect(self._on_unit_clicked)
1448                 self._unitsView.setUniformRowHeights(True)
1449                 self._unitsView.setSortingEnabled(True)
1450                 self._unitsView.setTextElideMode(QtCore.Qt.ElideNone)
1451                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1452                 if not IS_MAEMO:
1453                         self._unitsView.setAlternatingRowColors(True)
1454                 if True:
1455                         self._unitsView.setHeaderHidden(True)
1456
1457                 viewHeader = self._unitsView.header()
1458                 viewHeader.setSortIndicatorShown(True)
1459                 viewHeader.setClickable(True)
1460
1461                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1462                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1463                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1464                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1465                 viewHeader.setStretchLastSection(False)
1466
1467                 # Trying to make things faster by locking in the initial size of the immutable columns
1468                 nameSize = min(viewHeader.sectionSize(UnitData.NAME_COLUMN), 125)
1469                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1470                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1471                 unitSize = min(viewHeader.sectionSize(UnitData.UNIT_COLUMN), 125)
1472                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1473                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1474
1475                 self._layout = QtGui.QVBoxLayout()
1476                 self._layout.addLayout(self._selectedUnitLayout)
1477                 self._layout.addWidget(self._unitsView)
1478
1479                 centralWidget = QtGui.QWidget()
1480                 centralWidget.setLayout(self._layout)
1481
1482                 self._window = QtGui.QMainWindow(parent)
1483                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1484                 maeqt.set_autorient(self._window, True)
1485                 maeqt.set_stackable(self._window, True)
1486                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1487                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1488                 self._window.setCentralWidget(centralWidget)
1489
1490                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1491                 if defaultUnitName:
1492                         self.select_unit(defaultUnitName)
1493                 else:
1494                         self._select_unit(0)
1495
1496                 self._sortActionGroup = QtGui.QActionGroup(None)
1497                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
1498                 self._sortByNameAction.setText("Sort By Name")
1499                 self._sortByNameAction.setStatusTip("Sort the units by name")
1500                 self._sortByNameAction.setToolTip("Sort the units by name")
1501                 self._sortByNameAction.setCheckable(True)
1502                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
1503                 self._sortByValueAction.setText("Sort By Value")
1504                 self._sortByValueAction.setStatusTip("Sort the units by value")
1505                 self._sortByValueAction.setToolTip("Sort the units by value")
1506                 self._sortByValueAction.setCheckable(True)
1507                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
1508                 self._sortByUnitAction.setText("Sort By Unit")
1509                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
1510                 self._sortByUnitAction.setToolTip("Sort the units by unit")
1511                 self._sortByUnitAction.setCheckable(True)
1512
1513                 if UnitData.NAME_COLUMN != 0:
1514                         # By default it sorts by he first column (name)
1515                         self._unitsModel.sort(UnitData.NAME_COLUMN)
1516                 self._sortByNameAction.setChecked(True)
1517
1518                 self._chooseFavoritesAction = QtGui.QAction(None)
1519                 self._chooseFavoritesAction.setText("Select Favorites")
1520                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1521                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1522
1523                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1524
1525                 self._previousUnitAction = QtGui.QAction(None)
1526                 self._previousUnitAction.setText("Previous Unit")
1527                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1528                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1529
1530                 self._nextUnitAction = QtGui.QAction(None)
1531                 self._nextUnitAction.setText("Next Unit")
1532                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1533                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1534
1535                 self._closeWindowAction = QtGui.QAction(None)
1536                 self._closeWindowAction.setText("Close Window")
1537                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1538                 self._closeWindowAction.triggered.connect(self._on_close_window)
1539
1540                 if IS_MAEMO:
1541                         self._window.addAction(self._closeWindowAction)
1542                         self._window.addAction(self._app.quitAction)
1543                         self._window.addAction(self._app.fullscreenAction)
1544
1545                         fileMenu = self._window.menuBar().addMenu("&Units")
1546                         fileMenu.addAction(self._chooseFavoritesAction)
1547
1548                         viewMenu = self._window.menuBar().addMenu("&View")
1549                         viewMenu.addAction(self._app.showFavoritesAction)
1550                         viewMenu.addAction(self._app.condensedAction)
1551                         viewMenu.addSeparator()
1552                         viewMenu.addAction(self._sortByNameAction)
1553                         viewMenu.addAction(self._sortByValueAction)
1554                         viewMenu.addAction(self._sortByUnitAction)
1555                         viewMenu.addSeparator()
1556                         viewMenu.addAction(self._app.jumpAction)
1557                         viewMenu.addAction(self._app.recentAction)
1558                 else:
1559                         fileMenu = self._window.menuBar().addMenu("&Units")
1560                         fileMenu.addAction(self._chooseFavoritesAction)
1561                         fileMenu.addAction(self._closeWindowAction)
1562                         fileMenu.addAction(self._app.quitAction)
1563
1564                         viewMenu = self._window.menuBar().addMenu("&View")
1565                         viewMenu.addAction(self._app.showFavoritesAction)
1566                         viewMenu.addAction(self._app.condensedAction)
1567                         viewMenu.addSeparator()
1568                         viewMenu.addAction(self._sortByNameAction)
1569                         viewMenu.addAction(self._sortByValueAction)
1570                         viewMenu.addAction(self._sortByUnitAction)
1571                         viewMenu.addSeparator()
1572                         viewMenu.addAction(self._app.jumpAction)
1573                         viewMenu.addAction(self._app.recentAction)
1574                         viewMenu.addSeparator()
1575                         viewMenu.addAction(self._app.fullscreenAction)
1576
1577                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1578                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1579                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1580
1581                 self._window.addAction(self._app.logAction)
1582                 self._window.addAction(self._nextUnitAction)
1583                 self._window.addAction(self._previousUnitAction)
1584                 self._window.addAction(self._chooseFavoritesAction)
1585
1586                 self._update_favorites()
1587                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1588                 self._window.show()
1589
1590         @property
1591         def window(self):
1592                 return self._window
1593
1594         def show(self):
1595                 for child in self.walk_children():
1596                         child.hide()
1597                 self._window.show()
1598
1599         def hide(self):
1600                 for child in self.walk_children():
1601                         child.hide()
1602                 self._window.hide()
1603
1604         def close(self):
1605                 for child in self.walk_children():
1606                         child.window.destroyed.disconnect(self._on_child_close)
1607                         child.close()
1608                 self._window.close()
1609
1610         def set_fullscreen(self, isFullscreen):
1611                 if isFullscreen:
1612                         self._window.showFullScreen()
1613                 else:
1614                         self._window.showNormal()
1615
1616         def select_unit(self, unitName):
1617                 index = self._unitsModel.index_unit(unitName)
1618                 self._select_unit(index)
1619
1620         def walk_children(self):
1621                 if self._favoritesWindow is not None:
1622                         yield self._favoritesWindow
1623
1624         def _update_favorites(self, force = False):
1625                 if self._app.showFavoritesAction.isChecked():
1626                         unitNames = list(self._unitsModel.get_unit_names())
1627                         for i, unitName in enumerate(unitNames):
1628                                 if unitName in self._app.get_hidden_units(self._categoryName):
1629                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1630                                 else:
1631                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1632                 else:
1633                         if force:
1634                                 for i in xrange(len(self._unitsModel)):
1635                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1636
1637         @misc_utils.log_exception(_moduleLogger)
1638         def _on_show_favorites(self, checked = True):
1639                 if checked:
1640                         unitNames = list(self._unitsModel.get_unit_names())
1641                         for i, unitName in enumerate(unitNames):
1642                                 if unitName in self._app.get_hidden_units(self._categoryName):
1643                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1644                 else:
1645                         for i in xrange(len(self._unitsModel)):
1646                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1647
1648         @misc_utils.log_exception(_moduleLogger)
1649         def _on_choose_favorites(self, obj = None):
1650                 assert self._favoritesWindow is None
1651                 self._favoritesWindow = FavoritesWindow(
1652                         self._window,
1653                         self._app,
1654                         unit_data.get_units(self._categoryName),
1655                         self._app.get_hidden_units(self._categoryName)
1656                 )
1657                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1658                 return self._favoritesWindow
1659
1660         @misc_utils.log_exception(_moduleLogger)
1661         def _on_close_favorites(self, obj = None):
1662                 self._favoritesWindow = None
1663                 self._update_favorites(force=True)
1664
1665         @misc_utils.log_exception(_moduleLogger)
1666         def _on_previous_unit(self, checked = True):
1667                 self._select_unit(self._selectedIndex - 1)
1668
1669         @misc_utils.log_exception(_moduleLogger)
1670         def _on_next_unit(self, checked = True):
1671                 self._select_unit(self._selectedIndex + 1)
1672
1673         @misc_utils.log_exception(_moduleLogger)
1674         def _on_close_window(self, checked = True):
1675                 self.close()
1676
1677         @misc_utils.log_exception(_moduleLogger)
1678         def _on_sort_by_name(self, checked = False):
1679                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1680
1681         @misc_utils.log_exception(_moduleLogger)
1682         def _on_sort_by_value(self, checked = False):
1683                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1684
1685         @misc_utils.log_exception(_moduleLogger)
1686         def _on_sort_by_unit(self, checked = False):
1687                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1688
1689         @misc_utils.log_exception(_moduleLogger)
1690         def _on_unit_clicked(self, index):
1691                 self._select_unit(index.row())
1692
1693         @misc_utils.log_exception(_moduleLogger)
1694         def _on_value_edited(self, *args):
1695                 userInput = self._selectedUnitValue.text()
1696                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1697                 self._update_favorites()
1698
1699         def _select_unit(self, index):
1700                 unit = self._unitsModel.get_unit(index)
1701                 self._selectedUnitName.setText(unit.name)
1702                 self._selectedUnitValue.setText(str(unit.value))
1703                 self._selectedUnitSymbol.setText(unit.unit)
1704
1705                 self._selectedIndex = index
1706                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1707                 self._unitsView.scrollTo(qindex)
1708                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1709
1710
1711 def run_gonvert():
1712         app = QtGui.QApplication([])
1713         handle = Gonvert(app)
1714         return app.exec_()
1715
1716
1717 if __name__ == "__main__":
1718         logging.basicConfig(level = logging.DEBUG)
1719         try:
1720                 os.makedirs(constants._data_path_)
1721         except OSError, e:
1722                 if e.errno != 17:
1723                         raise
1724
1725         val = run_gonvert()
1726         sys.exit(val)