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

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