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