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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import sys
   7 import os
   8 import math
   9 import simplejson
  10 import logging
  11
  12 from PyQt4 import QtGui
  13 from PyQt4 import QtCore
  14
  15 import constants
  16 import maeqt
  17 from util import misc as misc_utils
  18 import unit_data
  19
  20
  21 _moduleLogger = logging.getLogger("gonvert_glade")
  22
  23
  24 IS_MAEMO = True
  25
  26
  27 def change_menu_label(widgets, labelname, newtext):
  28         item_label = widgets.get_widget(labelname).get_children()[0]
  29         item_label.set_text(newtext)
  30
  31
  32 def split_number(number):
  33         try:
  34                 fractional, integer = math.modf(number)
  35         except TypeError:
  36                 integerDisplay = number
  37                 fractionalDisplay = ""
  38         else:
  39                 integerDisplay = str(integer)
  40                 fractionalDisplay = str(fractional)
  41                 if "e+" in integerDisplay:
  42                         integerDisplay = number
  43                         fractionalDisplay = ""
  44                 elif "e-" in fractionalDisplay and 0.0 < integer:
  45                         integerDisplay = number
  46                         fractionalDisplay = ""
  47                 elif "e-" in fractionalDisplay:
  48                         integerDisplay = ""
  49                         fractionalDisplay = number
  50                 else:
  51                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  52                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  53
  54         return integerDisplay, fractionalDisplay
  55
  56
  57 class Gonvert(object):
  58
  59         _DATA_PATHS = [
  60                 os.path.dirname(__file__),
  61                 os.path.join(os.path.dirname(__file__), "../share"),
  62                 os.path.join(os.path.dirname(__file__), "../data"),
  63                 '/usr/share/gonvert',
  64                 '/opt/gonvert/share',
  65         ]
  66
  67         def __init__(self, app):
  68                 self._dataPath = ""
  69                 for dataPath in self._DATA_PATHS:
  70                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  71                         if os.path.isfile(appIconPath):
  72                                 self._dataPath = dataPath
  73                                 break
  74                 else:
  75                         raise RuntimeError("UI Descriptor not found!")
  76                 self._app = app
  77                 self._appIconPath = appIconPath
  78                 self._recent = []
  79                 self._hiddenCategories = set()
  80                 self._hiddenUnits = {}
  81                 self._clipboard = QtGui.QApplication.clipboard()
  82
  83                 self._jumpWindow = None
  84                 self._recentWindow = None
  85                 self._mainWindow = None
  86                 self._catWindow = None
  87                 self._quickWindow = None
  88
  89                 self._condensedAction = QtGui.QAction(None)
  90                 self._condensedAction.setText("Condensed View")
  91                 self._condensedAction.setCheckable(True)
  92                 self._condensedAction.triggered.connect(self._on_condensed_start)
  93
  94                 self._jumpAction = QtGui.QAction(None)
  95                 self._jumpAction.setText("Quick Jump")
  96                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  97                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  98                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  99                 self._jumpAction.triggered.connect(self._on_jump_start)
 100
 101                 self._recentAction = QtGui.QAction(None)
 102                 self._recentAction.setText("Recent Units")
 103                 self._recentAction.setStatusTip("View the recent units")
 104                 self._recentAction.setToolTip("View the recent units")
 105                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
 106                 self._recentAction.triggered.connect(self._on_recent_start)
 107
 108                 self._fullscreenAction = QtGui.QAction(None)
 109                 self._fullscreenAction.setText("Fullscreen")
 110                 self._fullscreenAction.setCheckable(True)
 111                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 112                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 113
 114                 self._showFavoritesAction = QtGui.QAction(None)
 115                 self._showFavoritesAction.setCheckable(True)
 116                 self._showFavoritesAction.setText("Favorites Only")
 117
 118                 self._logAction = QtGui.QAction(None)
 119                 self._logAction.setText("Log")
 120                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 121                 self._logAction.triggered.connect(self._on_log)
 122
 123                 self._quitAction = QtGui.QAction(None)
 124                 self._quitAction.setText("Quit")
 125                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 126                 self._quitAction.triggered.connect(self._on_quit)
 127
 128                 self._app.lastWindowClosed.connect(self._on_app_quit)
 129                 self.load_settings()
 130
 131                 self.request_category()
 132                 if self._recent:
 133                         self._mainWindow.select_category(self._recent[-1][0])
 134
 135         def request_category(self):
 136                 if self._mainWindow is not None:
 137                         self._mainWindow.hide()
 138
 139                 if self._condensedAction.isChecked():
 140                         if self._quickWindow is None:
 141                                 self._quickWindow = QuickConvert(None, self)
 142                                 self._quickWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_quickWindow", obj))
 143                         else:
 144                                 self._quickWindow.show()
 145                         self._mainWindow = self._quickWindow
 146                 else:
 147                         if self._catWindow is None:
 148                                 self._catWindow = CategoryWindow(None, self)
 149                                 self._catWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_catWindow", obj))
 150                         else:
 151                                 self._catWindow.window.show()
 152                         self._mainWindow = self._catWindow
 153
 154                 if self._recent:
 155                         self._mainWindow.select_category(self._recent[-1][0])
 156
 157                 return self._mainWindow
 158
 159         def search_units(self):
 160                 jumpWindow = QuickJump(None, self)
 161                 jumpWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_jumpWindow", obj))
 162                 self._fake_close_windows()
 163                 self._jumpWindow = jumpWindow
 164                 return self._jumpWindow
 165
 166         def show_recent(self):
 167                 recentWindow = Recent(None, self)
 168                 recentWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_recentWindow", obj))
 169                 self._fake_close_windows()
 170                 self._recentWindow = recentWindow
 171                 return self._recentWindow
 172
 173         def add_recent(self, categoryName, unitName):
 174                 catUnit = categoryName, unitName
 175                 try:
 176                         self._recent.remove(catUnit)
 177                 except ValueError:
 178                         pass # ignore if its not already in the recent history
 179                 assert catUnit not in self._recent
 180                 self._recent.append(catUnit)
 181
 182         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 183                 recentUnitName = ""
 184                 for catName, unitName in reversed(self._recent):
 185                         if catName == categoryName:
 186                                 recentUnitName = unitName
 187                                 if fromMostRecent <= 0:
 188                                         break
 189                                 else:
 190                                         fromMostRecent -= 1
 191                 return recentUnitName
 192
 193         def get_recent(self):
 194                 return reversed(self._recent)
 195
 196         @property
 197         def hiddenCategories(self):
 198                 return self._hiddenCategories
 199
 200         def get_hidden_units(self, categoryName):
 201                 try:
 202                         return self._hiddenUnits[categoryName]
 203                 except KeyError:
 204                         self._hiddenUnits[categoryName] = set()
 205                         return self._hiddenUnits[categoryName]
 206
 207         def load_settings(self):
 208                 try:
 209                         with open(constants._user_settings_, "r") as settingsFile:
 210                                 settings = simplejson.load(settingsFile)
 211                 except IOError, e:
 212                         _moduleLogger.info("No settings")
 213                         settings = {}
 214                 except ValueError:
 215                         _moduleLogger.info("Settings were corrupt")
 216                         settings = {}
 217
 218                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 219
 220                 recent = settings.get("recent", self._recent)
 221                 for category, unit in recent:
 222                         self.add_recent(category, unit)
 223
 224                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 225                 self._hiddenUnits = dict(
 226                         (catName, set(units))
 227                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 228                 )
 229
 230                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 231
 232                 self._condensedAction.setChecked(settings.get("useQuick", self._condensedAction.isChecked()))
 233
 234         def save_settings(self):
 235                 settings = {
 236                         "isFullScreen": self._fullscreenAction.isChecked(),
 237                         "recent": self._recent,
 238                         "hiddenCategories": list(self._hiddenCategories),
 239                         "hiddenUnits": dict(
 240                                 (catName, list(units))
 241                                 for (catName, units) in self._hiddenUnits.iteritems()
 242                         ),
 243                         "showFavorites": self._showFavoritesAction.isChecked(),
 244                         "useQuick": self._condensedAction.isChecked(),
 245                 }
 246                 with open(constants._user_settings_, "w") as settingsFile:
 247                         simplejson.dump(settings, settingsFile)
 248
 249         @property
 250         def appIconPath(self):
 251                 return self._appIconPath
 252
 253         @property
 254         def jumpAction(self):
 255                 return self._jumpAction
 256
 257         @property
 258         def recentAction(self):
 259                 return self._recentAction
 260
 261         @property
 262         def fullscreenAction(self):
 263                 return self._fullscreenAction
 264
 265         @property
 266         def condensedAction(self):
 267                 return self._condensedAction
 268
 269         @property
 270         def logAction(self):
 271                 return self._logAction
 272
 273         @property
 274         def quitAction(self):
 275                 return self._quitAction
 276
 277         @property
 278         def showFavoritesAction(self):
 279                 return self._showFavoritesAction
 280
 281         def _walk_children(self):
 282                 if self._catWindow is not None:
 283                         yield self._catWindow
 284                 if self._quickWindow is not None:
 285                         yield self._quickWindow
 286                 if self._jumpWindow is not None:
 287                         yield self._jumpWindow
 288                 if self._recentWindow is not None:
 289                         yield self._recentWindow
 290
 291         def _fake_close_windows(self):
 292                 if self._catWindow is not None:
 293                         self._catWindow.hide()
 294                 if self._quickWindow is not None:
 295                         self._quickWindow.hide()
 296                 if self._jumpWindow is not None:
 297                         self._jumpWindow.close()
 298                         self._jumpWindow = None
 299                 if self._recentWindow is not None:
 300                         self._recentWindow.close()
 301                         self._recentWindow = None
 302
 303         def _close_windows(self):
 304                 for child in self._walk_children():
 305                         child.close()
 306                 self._catWindow = None
 307                 self._quickWindow = None
 308                 self._jumpWindow = None
 309                 self._recentWindow = None
 310
 311         @misc_utils.log_exception(_moduleLogger)
 312         def _on_app_quit(self, checked = False):
 313                 self.save_settings()
 314
 315         @misc_utils.log_exception(_moduleLogger)
 316         def _on_child_close(self, name, obj = None):
 317                 if not hasattr(self, name):
 318                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 319                         return
 320                 setattr(self, name, None)
 321
 322         @misc_utils.log_exception(_moduleLogger)
 323         def _on_toggle_fullscreen(self, checked = False):
 324                 for window in self._walk_children():
 325                         window.set_fullscreen(checked)
 326
 327         @misc_utils.log_exception(_moduleLogger)
 328         def _on_condensed_start(self, checked = False):
 329                 self.request_category()
 330
 331         @misc_utils.log_exception(_moduleLogger)
 332         def _on_jump_start(self, checked = False):
 333                 self.search_units()
 334
 335         @misc_utils.log_exception(_moduleLogger)
 336         def _on_recent_start(self, checked = False):
 337                 self.show_recent()
 338
 339         @misc_utils.log_exception(_moduleLogger)
 340         def _on_log(self, checked = False):
 341                 with open(constants._user_logpath_, "r") as f:
 342                         logLines = f.xreadlines()
 343                         log = "".join(logLines)
 344                         self._clipboard.setText(log)
 345
 346         @misc_utils.log_exception(_moduleLogger)
 347         def _on_quit(self, checked = False):
 348                 self._close_windows()
 349
 350
 351 class QuickJump(object):
 352
 353         MINIMAL_ENTRY = 3
 354
 355         def __init__(self, parent, app):
 356                 self._app = app
 357
 358                 self._searchLabel = QtGui.QLabel("Search:")
 359                 self._searchEntry = QtGui.QLineEdit("")
 360                 self._searchEntry.textEdited.connect(self._on_search_edited)
 361
 362                 self._entryLayout = QtGui.QHBoxLayout()
 363                 self._entryLayout.addWidget(self._searchLabel)
 364                 self._entryLayout.addWidget(self._searchEntry)
 365
 366                 self._resultsBox = QtGui.QTreeWidget()
 367                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 368                 self._resultsBox.setHeaderHidden(True)
 369                 if not IS_MAEMO:
 370                         self._resultsBox.setAlternatingRowColors(True)
 371                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 372
 373                 self._layout = QtGui.QVBoxLayout()
 374                 self._layout.addLayout(self._entryLayout)
 375                 self._layout.addWidget(self._resultsBox)
 376
 377                 centralWidget = QtGui.QWidget()
 378                 centralWidget.setLayout(self._layout)
 379
 380                 self._window = QtGui.QMainWindow(parent)
 381                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 382                 maeqt.set_autorient(self._window, True)
 383                 maeqt.set_stackable(self._window, True)
 384                 if parent is not None:
 385                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 386                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 387                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 388                 self._window.setCentralWidget(centralWidget)
 389
 390                 self._closeWindowAction = QtGui.QAction(None)
 391                 self._closeWindowAction.setText("Close")
 392                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 393                 self._closeWindowAction.triggered.connect(self._on_close_window)
 394
 395                 if IS_MAEMO:
 396                         self._window.addAction(self._closeWindowAction)
 397                         self._window.addAction(self._app.quitAction)
 398                         self._window.addAction(self._app.fullscreenAction)
 399                 else:
 400                         fileMenu = self._window.menuBar().addMenu("&Units")
 401                         fileMenu.addAction(self._closeWindowAction)
 402                         fileMenu.addAction(self._app.quitAction)
 403
 404                         viewMenu = self._window.menuBar().addMenu("&View")
 405                         viewMenu.addAction(self._app.fullscreenAction)
 406
 407                 self._window.addAction(self._app.logAction)
 408
 409                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 410                 self._window.show()
 411
 412         @property
 413         def window(self):
 414                 return self._window
 415
 416         def show(self):
 417                 self._window.show()
 418
 419         def hide(self):
 420                 self._window.hide()
 421
 422         def close(self):
 423                 self._window.close()
 424
 425         def set_fullscreen(self, isFullscreen):
 426                 if isFullscreen:
 427                         self._window.showFullScreen()
 428                 else:
 429                         self._window.showNormal()
 430
 431         @misc_utils.log_exception(_moduleLogger)
 432         def _on_close_window(self, checked = True):
 433                 self.close()
 434
 435         @misc_utils.log_exception(_moduleLogger)
 436         def _on_result_clicked(self, item, columnIndex):
 437                 categoryName = unicode(item.text(0))
 438                 unitName = unicode(item.text(1))
 439                 catWindow = self._app.request_category()
 440                 unitsWindow = catWindow.select_category(categoryName)
 441                 unitsWindow.select_unit(unitName)
 442                 self.close()
 443
 444         @misc_utils.log_exception(_moduleLogger)
 445         def _on_search_edited(self, *args):
 446                 userInput = self._searchEntry.text()
 447                 if len(userInput) <  self.MINIMAL_ENTRY:
 448                         return
 449
 450                 self._resultsBox.clear()
 451                 lowerInput = str(userInput).lower()
 452                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 453                         units = unit_data.get_units(category)
 454                         for unitIndex, unit in enumerate(units):
 455                                 loweredUnit = unit.lower()
 456                                 if lowerInput in loweredUnit:
 457                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 458                                         twi.setText(0, category)
 459                                         twi.setText(1, unit)
 460
 461
 462 class Recent(object):
 463
 464         def __init__(self, parent, app):
 465                 self._app = app
 466
 467                 self._resultsBox = QtGui.QTreeWidget()
 468                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 469                 self._resultsBox.setHeaderHidden(True)
 470                 if not IS_MAEMO:
 471                         self._resultsBox.setAlternatingRowColors(True)
 472                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 473
 474                 self._layout = QtGui.QVBoxLayout()
 475                 self._layout.addWidget(self._resultsBox)
 476
 477                 centralWidget = QtGui.QWidget()
 478                 centralWidget.setLayout(self._layout)
 479
 480                 self._window = QtGui.QMainWindow(parent)
 481                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 482                 maeqt.set_autorient(self._window, True)
 483                 maeqt.set_stackable(self._window, True)
 484                 if parent is not None:
 485                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 486                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 487                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 488                 self._window.setCentralWidget(centralWidget)
 489
 490                 for cat, unit in self._app.get_recent():
 491                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 492                         twi.setText(0, cat)
 493                         twi.setText(1, unit)
 494
 495                 self._closeWindowAction = QtGui.QAction(None)
 496                 self._closeWindowAction.setText("Close")
 497                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 498                 self._closeWindowAction.triggered.connect(self._on_close_window)
 499
 500                 if IS_MAEMO:
 501                         self._window.addAction(self._closeWindowAction)
 502                         self._window.addAction(self._app.quitAction)
 503                         self._window.addAction(self._app.fullscreenAction)
 504                 else:
 505                         fileMenu = self._window.menuBar().addMenu("&Units")
 506                         fileMenu.addAction(self._closeWindowAction)
 507                         fileMenu.addAction(self._app.quitAction)
 508
 509                         viewMenu = self._window.menuBar().addMenu("&View")
 510                         viewMenu.addAction(self._app.fullscreenAction)
 511
 512                 self._window.addAction(self._app.logAction)
 513
 514                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 515                 self._window.show()
 516
 517         @property
 518         def window(self):
 519                 return self._window
 520
 521         def show(self):
 522                 self._window.show()
 523
 524         def hide(self):
 525                 self._window.hide()
 526
 527         def close(self):
 528                 self._window.close()
 529
 530         def set_fullscreen(self, isFullscreen):
 531                 if isFullscreen:
 532                         self._window.showFullScreen()
 533                 else:
 534                         self._window.showNormal()
 535
 536         @misc_utils.log_exception(_moduleLogger)
 537         def _on_close_window(self, checked = True):
 538                 self.close()
 539
 540         @misc_utils.log_exception(_moduleLogger)
 541         def _on_result_clicked(self, item, columnIndex):
 542                 categoryName = unicode(item.text(0))
 543                 unitName = unicode(item.text(1))
 544                 catWindow = self._app.request_category()
 545                 unitsWindow = catWindow.select_category(categoryName)
 546                 unitsWindow.select_unit(unitName)
 547                 self.close()
 548
 549
 550 class QuickConvert(object):
 551
 552         def __init__(self, parent, app):
 553                 self._app = app
 554                 self._categoryName = ""
 555                 self._inputUnitName = ""
 556                 self._outputUnitName = ""
 557                 self._unitNames = []
 558                 self._favoritesWindow = None
 559
 560                 self._inputUnitValue = QtGui.QLineEdit()
 561                 self._inputUnitValue.setInputMethodHints(QtCore.Qt.ImhPreferNumbers)
 562                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 563                 self._inputUnitSymbol = QtGui.QLabel()
 564
 565                 self._outputUnitValue = QtGui.QLabel()
 566                 self._outputUnitSymbol = QtGui.QLabel()
 567
 568                 self._conversionLayout = QtGui.QHBoxLayout()
 569                 self._conversionLayout.addWidget(self._inputUnitValue)
 570                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 571                 self._conversionLayout.addWidget(self._outputUnitValue)
 572                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 573
 574                 self._categoryView = QtGui.QTreeWidget()
 575                 self._categoryView.setHeaderLabels(["Categories"])
 576                 self._categoryView.setHeaderHidden(True)
 577                 if not IS_MAEMO:
 578                         self._categoryView.setAlternatingRowColors(True)
 579                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 580                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 581                 for catName in unit_data.UNIT_CATEGORIES:
 582                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 583                         twi.setText(0, catName)
 584                 self._categorySelection = self._categoryView.selectionModel()
 585                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 586
 587                 self._inputView = QtGui.QTreeWidget()
 588                 self._inputView.setHeaderLabels(["Input", "Name"])
 589                 self._inputView.setHeaderHidden(True)
 590                 self._inputView.header().hideSection(1)
 591                 if not IS_MAEMO:
 592                         self._inputView.setAlternatingRowColors(True)
 593                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 594                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 595                 self._inputSelection = self._inputView.selectionModel()
 596                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 597
 598                 self._outputView = QtGui.QTreeWidget()
 599                 self._outputView.setHeaderLabels(["Output", "Name"])
 600                 self._outputView.setHeaderHidden(True)
 601                 self._outputView.header().hideSection(1)
 602                 if not IS_MAEMO:
 603                         self._outputView.setAlternatingRowColors(True)
 604                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 605                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 606                 self._outputWidgets = []
 607                 self._outputSelection = self._outputView.selectionModel()
 608                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 609
 610                 self._selectionLayout = QtGui.QHBoxLayout()
 611                 self._selectionLayout.addWidget(self._categoryView)
 612                 self._selectionLayout.addWidget(self._inputView)
 613                 self._selectionLayout.addWidget(self._outputView)
 614
 615                 self._layout = QtGui.QVBoxLayout()
 616                 self._layout.addLayout(self._conversionLayout)
 617                 self._layout.addLayout(self._selectionLayout)
 618
 619                 centralWidget = QtGui.QWidget()
 620                 centralWidget.setLayout(self._layout)
 621
 622                 self._window = QtGui.QMainWindow(parent)
 623                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 624                 maeqt.set_autorient(self._window, True)
 625                 maeqt.set_stackable(self._window, True)
 626                 if parent is not None:
 627                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 628                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 629                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 630                 self._window.setCentralWidget(centralWidget)
 631
 632                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 633                 self._chooseCatFavoritesAction.setText("Select Categories")
 634                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 635
 636                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 637                 self._chooseUnitFavoritesAction.setText("Select Units")
 638                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 639
 640                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 641
 642                 self._closeWindowAction = QtGui.QAction(None)
 643                 self._closeWindowAction.setText("Close Window")
 644                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 645                 self._closeWindowAction.triggered.connect(self._on_close_window)
 646
 647                 if IS_MAEMO:
 648                         self._window.addAction(self._closeWindowAction)
 649                         self._window.addAction(self._app.quitAction)
 650                         self._window.addAction(self._app.fullscreenAction)
 651
 652                         fileMenu = self._window.menuBar().addMenu("&Units")
 653                         fileMenu.addAction(self._chooseCatFavoritesAction)
 654                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 655
 656                         viewMenu = self._window.menuBar().addMenu("&View")
 657                         viewMenu.addAction(self._app.showFavoritesAction)
 658                         viewMenu.addAction(self._app.condensedAction)
 659                         viewMenu.addSeparator()
 660                         viewMenu.addAction(self._app.jumpAction)
 661                         viewMenu.addAction(self._app.recentAction)
 662                 else:
 663                         fileMenu = self._window.menuBar().addMenu("&Units")
 664                         fileMenu.addAction(self._chooseCatFavoritesAction)
 665                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 666                         fileMenu.addAction(self._closeWindowAction)
 667                         fileMenu.addAction(self._app.quitAction)
 668
 669                         viewMenu = self._window.menuBar().addMenu("&View")
 670                         viewMenu.addAction(self._app.showFavoritesAction)
 671                         viewMenu.addAction(self._app.condensedAction)
 672                         viewMenu.addSeparator()
 673                         viewMenu.addAction(self._app.jumpAction)
 674                         viewMenu.addAction(self._app.recentAction)
 675                         viewMenu.addSeparator()
 676                         viewMenu.addAction(self._app.fullscreenAction)
 677
 678                 self._window.addAction(self._app.logAction)
 679
 680                 self._update_favorites()
 681                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 682                 self._window.show()
 683
 684         @property
 685         def window(self):
 686                 return self._window
 687
 688         def show(self):
 689                 self._window.show()
 690
 691         def hide(self):
 692                 self._window.hide()
 693
 694         def close(self):
 695                 self._window.close()
 696
 697         def set_fullscreen(self, isFullscreen):
 698                 if isFullscreen:
 699                         self._window.showFullScreen()
 700                 else:
 701                         self._window.showNormal()
 702
 703         def select_category(self, categoryName):
 704                 self._inputUnitValue.setText("")
 705                 self._inputView.clear()
 706                 self._outputView.clear()
 707                 self._categoryName = categoryName
 708
 709                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 710                 self._unitNames = list(unit_data.get_units(categoryName))
 711                 self._unitNames.sort()
 712                 for key in self._unitNames:
 713                         conversion, unit, description = unitData[key]
 714                         if not unit:
 715                                 unit = key
 716
 717                         twi = QtGui.QTreeWidgetItem(self._inputView)
 718                         twi.setText(0, unit)
 719                         twi.setText(1, key)
 720
 721                         twi = QtGui.QTreeWidgetItem(self._outputView)
 722                         twi.setText(0, unit)
 723                         twi.setText(1, key)
 724
 725                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 726                 rootIndex = self._categoryView.rootIndex()
 727                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 728                 self._categoryView.scrollTo(currentIndex)
 729
 730                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 731                 if defaultInputUnitName:
 732                         self.select_input(defaultInputUnitName)
 733                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 734                         assert defaultOutputUnitName
 735                         self.select_output(defaultOutputUnitName)
 736
 737                 return self
 738
 739         def select_unit(self, name):
 740                 self.select_input(name)
 741
 742         def select_input(self, name):
 743                 self._app.add_recent(self._categoryName, name)
 744                 self._inputUnitName = name
 745
 746                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 747                 conversion, unit, description = unitData[name]
 748
 749                 self._inputUnitSymbol.setText(unit if unit else name)
 750
 751                 i = self._unitNames.index(name)
 752                 rootIndex = self._inputView.rootIndex()
 753                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 754                 self._inputView.scrollTo(currentIndex)
 755
 756         def select_output(self, name):
 757                 # Add the output to recent but don't make things weird by making it the most recent
 758                 self._app.add_recent(self._categoryName, name)
 759                 self._app.add_recent(self._categoryName, self._inputUnitName)
 760                 self._outputUnitName = name
 761
 762                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 763                 conversion, unit, description = unitData[name]
 764
 765                 self._outputUnitSymbol.setText(unit if unit else name)
 766
 767                 i = self._unitNames.index(name)
 768                 rootIndex = self._outputView.rootIndex()
 769                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 770                 self._outputView.scrollTo(currentIndex)
 771
 772         def _sanitize_value(self, userEntry):
 773                 if self._categoryName == "Computer Numbers":
 774                         if userEntry == '':
 775                                 value = '0'
 776                         else:
 777                                 value = userEntry
 778                 else:
 779                         if userEntry == '':
 780                                 value = 0.0
 781                         else:
 782                                 value = float(userEntry)
 783                 return value
 784
 785         def _update_favorites(self):
 786                 if self._app.showFavoritesAction.isChecked():
 787                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 788                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 789                                 if catName in self._app.hiddenCategories:
 790                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 791                                 else:
 792                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 793
 794                         for i, unitName in enumerate(self._unitNames):
 795                                 if unitName in self._app.get_hidden_units(self._categoryName):
 796                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 797                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 798                                 else:
 799                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 800                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 801                 else:
 802                         for i in xrange(self._categoryView.topLevelItemCount()):
 803                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 804
 805                         for i in xrange(len(self._unitNames)):
 806                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 807                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 808
 809         @misc_utils.log_exception(_moduleLogger)
 810         def _on_close_window(self, checked = True):
 811                 self.close()
 812
 813         @misc_utils.log_exception(_moduleLogger)
 814         def _on_show_favorites(self, checked = True):
 815                 if checked:
 816                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 817                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 818                                 if catName in self._app.hiddenCategories:
 819                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 820
 821                         for i, unitName in enumerate(self._unitNames):
 822                                 if unitName in self._app.get_hidden_units(self._categoryName):
 823                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 824                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 825                 else:
 826                         for i in xrange(self._categoryView.topLevelItemCount()):
 827                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 828
 829                         for i in xrange(len(self._unitNames)):
 830                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 831                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 832
 833         @misc_utils.log_exception(_moduleLogger)
 834         def _on_choose_category_favorites(self, obj = None):
 835                 assert self._favoritesWindow is None
 836                 self._favoritesWindow = FavoritesWindow(
 837                         self._window,
 838                         self._app,
 839                         unit_data.UNIT_CATEGORIES,
 840                         self._app.hiddenCategories
 841                 )
 842                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 843                 return self._favoritesWindow
 844
 845         @misc_utils.log_exception(_moduleLogger)
 846         def _on_choose_unit_favorites(self, obj = None):
 847                 assert self._favoritesWindow is None
 848                 self._favoritesWindow = FavoritesWindow(
 849                         self._window,
 850                         self._app,
 851                         unit_data.get_units(self._categoryName),
 852                         self._app.get_hidden_units(self._categoryName)
 853                 )
 854                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 855                 return self._favoritesWindow
 856
 857         @misc_utils.log_exception(_moduleLogger)
 858         def _on_close_favorites(self, obj = None):
 859                 self._favoritesWindow = None
 860                 self._update_favorites()
 861
 862         @misc_utils.log_exception(_moduleLogger)
 863         def _on_value_edited(self, *args):
 864                 assert self._categoryName
 865                 assert self._inputUnitName
 866                 assert self._outputUnitName
 867
 868                 userInput = str(self._inputUnitValue.text())
 869                 value = self._sanitize_value(userInput)
 870
 871                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 872                 inputConversion, _, _ = unitData[self._inputUnitName]
 873                 outputConversion, _, _ = unitData[self._outputUnitName]
 874
 875                 func, arg = inputConversion
 876                 base = func.to_base(value, arg)
 877
 878                 func, arg = outputConversion
 879                 newValue = func.from_base(base, arg)
 880                 self._outputUnitValue.setText(str(newValue))
 881
 882         @misc_utils.log_exception(_moduleLogger)
 883         def _on_category_selection_changed(self, selected, deselected):
 884                 selectedNames = [
 885                         str(item.text(0))
 886                         for item in self._categoryView.selectedItems()
 887                 ]
 888                 assert len(selectedNames) == 1
 889                 self.select_category(selectedNames[0])
 890
 891         @misc_utils.log_exception(_moduleLogger)
 892         def _on_input_selection_changed(self, selected, deselected):
 893                 selectedNames = [
 894                         str(item.text(1))
 895                         for item in self._inputView.selectedItems()
 896                 ]
 897                 if selectedNames:
 898                         assert len(selectedNames) == 1
 899                         name = selectedNames[0]
 900                         self.select_input(name)
 901                 else:
 902                         pass
 903
 904         @misc_utils.log_exception(_moduleLogger)
 905         def _on_output_selection_changed(self, selected, deselected):
 906                 selectedNames = [
 907                         str(item.text(1))
 908                         for item in self._outputView.selectedItems()
 909                 ]
 910                 if selectedNames:
 911                         assert len(selectedNames) == 1
 912                         name = selectedNames[0]
 913                         self.select_output(name)
 914                 else:
 915                         pass
 916
 917
 918 class FavoritesWindow(object):
 919
 920         def __init__(self, parent, app, source, hidden):
 921                 self._app = app
 922                 self._source = list(source)
 923                 self._hidden = hidden
 924
 925                 self._categories = QtGui.QTreeWidget()
 926                 self._categories.setHeaderLabels(["Categories"])
 927                 self._categories.setHeaderHidden(True)
 928                 if not IS_MAEMO:
 929                         self._categories.setAlternatingRowColors(True)
 930                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 931                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 932                 self._childWidgets = []
 933                 for catName in self._source:
 934                         twi = QtGui.QTreeWidgetItem(self._categories)
 935                         twi.setText(0, catName)
 936                         self._childWidgets.append(twi)
 937                         if catName not in self._hidden:
 938                                 self._categories.setItemSelected(twi, True)
 939                 self._selection = self._categories.selectionModel()
 940                 self._selection.selectionChanged.connect(self._on_selection_changed)
 941
 942                 self._allButton = QtGui.QPushButton("All")
 943                 self._allButton.clicked.connect(self._on_select_all)
 944                 self._invertButton = QtGui.QPushButton("Invert")
 945                 self._invertButton.clicked.connect(self._on_invert_selection)
 946                 self._noneButton = QtGui.QPushButton("None")
 947                 self._noneButton.clicked.connect(self._on_select_none)
 948
 949                 self._buttonLayout = QtGui.QHBoxLayout()
 950                 self._buttonLayout.addWidget(self._allButton)
 951                 self._buttonLayout.addWidget(self._invertButton)
 952                 self._buttonLayout.addWidget(self._noneButton)
 953
 954                 self._layout = QtGui.QVBoxLayout()
 955                 self._layout.addWidget(self._categories)
 956                 self._layout.addLayout(self._buttonLayout)
 957
 958                 centralWidget = QtGui.QWidget()
 959                 centralWidget.setLayout(self._layout)
 960
 961                 self._window = QtGui.QMainWindow(parent)
 962                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 963                 maeqt.set_autorient(self._window, True)
 964                 maeqt.set_stackable(self._window, True)
 965                 if parent is not None:
 966                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 967                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 968                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 969                 self._window.setCentralWidget(centralWidget)
 970
 971                 self._closeWindowAction = QtGui.QAction(None)
 972                 self._closeWindowAction.setText("Close")
 973                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 974                 self._closeWindowAction.triggered.connect(self._on_close_window)
 975
 976                 if IS_MAEMO:
 977                         self._window.addAction(self._closeWindowAction)
 978                         self._window.addAction(self._app.quitAction)
 979                         self._window.addAction(self._app.fullscreenAction)
 980                 else:
 981                         fileMenu = self._window.menuBar().addMenu("&Units")
 982                         fileMenu.addAction(self._closeWindowAction)
 983                         fileMenu.addAction(self._app.quitAction)
 984
 985                         viewMenu = self._window.menuBar().addMenu("&View")
 986                         viewMenu.addAction(self._app.fullscreenAction)
 987
 988                 self._window.addAction(self._app.logAction)
 989
 990                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 991                 self._window.show()
 992
 993         @property
 994         def window(self):
 995                 return self._window
 996
 997         def show(self):
 998                 self._window.show()
 999
1000         def hide(self):
1001                 self._window.hide()
1002
1003         def close(self):
1004                 self._window.close()
1005
1006         def set_fullscreen(self, isFullscreen):
1007                 if isFullscreen:
1008                         self._window.showFullScreen()
1009                 else:
1010                         self._window.showNormal()
1011
1012         @misc_utils.log_exception(_moduleLogger)
1013         def _on_select_all(self, checked = False):
1014                 for child in self._childWidgets:
1015                         self._categories.setItemSelected(child, True)
1016
1017         @misc_utils.log_exception(_moduleLogger)
1018         def _on_invert_selection(self, checked = False):
1019                 for child in self._childWidgets:
1020                         isSelected = self._categories.isItemSelected(child)
1021                         self._categories.setItemSelected(child, not isSelected)
1022
1023         @misc_utils.log_exception(_moduleLogger)
1024         def _on_select_none(self, checked = False):
1025                 for child in self._childWidgets:
1026                         self._categories.setItemSelected(child, False)
1027
1028         @misc_utils.log_exception(_moduleLogger)
1029         def _on_selection_changed(self, selected, deselected):
1030                 self._hidden.clear()
1031                 selectedNames = set(
1032                         str(item.text(0))
1033                         for item in self._categories.selectedItems()
1034                 )
1035                 for name in self._source:
1036                         if name not in selectedNames:
1037                                 self._hidden.add(name)
1038
1039         @misc_utils.log_exception(_moduleLogger)
1040         def _on_close_window(self, checked = True):
1041                 self.close()
1042
1043
1044 class CategoryWindow(object):
1045
1046         def __init__(self, parent, app):
1047                 self._app = app
1048                 self._unitWindow = None
1049                 self._favoritesWindow = None
1050
1051                 self._categories = QtGui.QTreeWidget()
1052                 self._categories.setHeaderLabels(["Categories"])
1053                 self._categories.itemClicked.connect(self._on_category_clicked)
1054                 self._categories.setHeaderHidden(True)
1055                 if not IS_MAEMO:
1056                         self._categories.setAlternatingRowColors(True)
1057                 for catName in unit_data.UNIT_CATEGORIES:
1058                         twi = QtGui.QTreeWidgetItem(self._categories)
1059                         twi.setText(0, catName)
1060
1061                 self._layout = QtGui.QVBoxLayout()
1062                 self._layout.addWidget(self._categories)
1063
1064                 centralWidget = QtGui.QWidget()
1065                 centralWidget.setLayout(self._layout)
1066
1067                 self._window = QtGui.QMainWindow(parent)
1068                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1069                 maeqt.set_autorient(self._window, True)
1070                 maeqt.set_stackable(self._window, True)
1071                 if parent is not None:
1072                         self._window.setWindowModality(QtCore.Qt.WindowModal)
1073                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
1074                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
1075                 self._window.setCentralWidget(centralWidget)
1076
1077                 self._chooseFavoritesAction = QtGui.QAction(None)
1078                 self._chooseFavoritesAction.setText("Select Favorites")
1079                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1080                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1081
1082                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1083
1084                 self._closeWindowAction = QtGui.QAction(None)
1085                 self._closeWindowAction.setText("Close")
1086                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1087                 self._closeWindowAction.triggered.connect(self._on_close_window)
1088
1089                 if IS_MAEMO:
1090                         fileMenu = self._window.menuBar().addMenu("&Units")
1091                         fileMenu.addAction(self._chooseFavoritesAction)
1092
1093                         viewMenu = self._window.menuBar().addMenu("&View")
1094                         viewMenu.addAction(self._app.showFavoritesAction)
1095                         viewMenu.addAction(self._app.condensedAction)
1096                         viewMenu.addSeparator()
1097                         viewMenu.addAction(self._app.jumpAction)
1098                         viewMenu.addAction(self._app.recentAction)
1099
1100                         self._window.addAction(self._closeWindowAction)
1101                         self._window.addAction(self._app.quitAction)
1102                         self._window.addAction(self._app.fullscreenAction)
1103                 else:
1104                         fileMenu = self._window.menuBar().addMenu("&Units")
1105                         fileMenu.addAction(self._chooseFavoritesAction)
1106                         fileMenu.addAction(self._closeWindowAction)
1107                         fileMenu.addAction(self._app.quitAction)
1108
1109                         viewMenu = self._window.menuBar().addMenu("&View")
1110                         viewMenu.addAction(self._app.showFavoritesAction)
1111                         viewMenu.addAction(self._app.condensedAction)
1112                         viewMenu.addSeparator()
1113                         viewMenu.addAction(self._app.jumpAction)
1114                         viewMenu.addAction(self._app.recentAction)
1115                         viewMenu.addSeparator()
1116                         viewMenu.addAction(self._app.fullscreenAction)
1117
1118                 self._window.addAction(self._app.logAction)
1119
1120                 self._update_favorites()
1121                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1122                 self._window.show()
1123
1124         @property
1125         def window(self):
1126                 return self._window
1127
1128         def walk_children(self):
1129                 if self._unitWindow is not None:
1130                         yield self._unitWindow
1131                 if self._favoritesWindow is not None:
1132                         yield self._favoritesWindow
1133
1134         def show(self):
1135                 for child in self.walk_children():
1136                         child.show()
1137                 self._window.show()
1138
1139         def hide(self):
1140                 for child in self.walk_children():
1141                         child.hide()
1142                 self._window.hide()
1143
1144         def close(self):
1145                 for child in self.walk_children():
1146                         child.window.destroyed.disconnect(self._on_child_close)
1147                         child.close()
1148                 self._window.close()
1149
1150         def select_category(self, categoryName):
1151                 for child in self.walk_children():
1152                         child.window.destroyed.disconnect(self._on_child_close)
1153                         child.close()
1154                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
1155                 self._unitWindow.window.destroyed.connect(self._on_child_close)
1156
1157                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
1158                 rootIndex = self._categories.rootIndex()
1159                 currentIndex = self._categories.model().index(i, 0, rootIndex)
1160                 self._categories.scrollTo(currentIndex)
1161                 return self._unitWindow
1162
1163         def set_fullscreen(self, isFullscreen):
1164                 if isFullscreen:
1165                         self._window.showFullScreen()
1166                 else:
1167                         self._window.showNormal()
1168                 for child in self.walk_children():
1169                         child.set_fullscreen(isFullscreen)
1170
1171         def _update_favorites(self):
1172                 if self._app.showFavoritesAction.isChecked():
1173                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1174                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1175                                 if catName in self._app.hiddenCategories:
1176                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1177                                 else:
1178                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1179                 else:
1180                         for i in xrange(self._categories.topLevelItemCount()):
1181                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1182
1183         @misc_utils.log_exception(_moduleLogger)
1184         def _on_show_favorites(self, checked = True):
1185                 if checked:
1186                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1187                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1188                                 if catName in self._app.hiddenCategories:
1189                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1190                 else:
1191                         for i in xrange(self._categories.topLevelItemCount()):
1192                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1193
1194         @misc_utils.log_exception(_moduleLogger)
1195         def _on_choose_favorites(self, obj = None):
1196                 assert self._favoritesWindow is None
1197                 self._favoritesWindow = FavoritesWindow(
1198                         self._window,
1199                         self._app,
1200                         unit_data.UNIT_CATEGORIES,
1201                         self._app.hiddenCategories
1202                 )
1203                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1204                 return self._favoritesWindow
1205
1206         @misc_utils.log_exception(_moduleLogger)
1207         def _on_close_favorites(self, obj = None):
1208                 self._favoritesWindow = None
1209                 self._update_favorites()
1210
1211         @misc_utils.log_exception(_moduleLogger)
1212         def _on_child_close(self, obj = None):
1213                 self._unitWindow = None
1214
1215         @misc_utils.log_exception(_moduleLogger)
1216         def _on_close_window(self, checked = True):
1217                 self.close()
1218
1219         @misc_utils.log_exception(_moduleLogger)
1220         def _on_category_clicked(self, item, columnIndex):
1221                 categoryName = unicode(item.text(0))
1222                 self.select_category(categoryName)
1223
1224
1225 class UnitData(object):
1226
1227         HEADERS = ["Name", "Value", "", "Unit"]
1228         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1229         NAME_COLUMN = 0
1230         VALUE_COLUMN_0 = 1
1231         VALUE_COLUMN_1 = 2
1232         UNIT_COLUMN = 3
1233
1234         def __init__(self, name, unit, description, conversion):
1235                 self._name = name
1236                 self._unit = unit
1237                 self._description = description
1238                 self._conversion = conversion
1239
1240                 self._value = 0.0
1241                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1242
1243         @property
1244         def name(self):
1245                 return self._name
1246
1247         @property
1248         def value(self):
1249                 return self._value
1250
1251         def update_value(self, newValue):
1252                 self._value = newValue
1253                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1254
1255         @property
1256         def unit(self):
1257                 return self._unit
1258
1259         @property
1260         def conversion(self):
1261                 return self._conversion
1262
1263         def data(self, column):
1264                 try:
1265                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1266                 except IndexError:
1267                         return None
1268
1269
1270 class UnitModel(QtCore.QAbstractItemModel):
1271
1272         def __init__(self, categoryName, parent=None):
1273                 super(UnitModel, self).__init__(parent)
1274                 self._categoryName = categoryName
1275                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1276
1277                 self._children = []
1278                 for key in unit_data.get_units(self._categoryName):
1279                         conversion, unit, description = self._unitData[key]
1280                         self._children.append(UnitData(key, unit, description, conversion))
1281                 self._sortSettings = None
1282
1283         @misc_utils.log_exception(_moduleLogger)
1284         def columnCount(self, parent):
1285                 if parent.isValid():
1286                         return 0
1287                 else:
1288                         return len(UnitData.HEADERS)
1289
1290         @misc_utils.log_exception(_moduleLogger)
1291         def data(self, index, role):
1292                 if not index.isValid():
1293                         return None
1294                 elif role == QtCore.Qt.TextAlignmentRole:
1295                         return UnitData.ALIGNMENT[index.column()]
1296                 elif role != QtCore.Qt.DisplayRole:
1297                         return None
1298
1299                 item = index.internalPointer()
1300                 if isinstance(item, UnitData):
1301                         return item.data(index.column())
1302                 elif item is UnitData.HEADERS:
1303                         return item[index.column()]
1304
1305         @misc_utils.log_exception(_moduleLogger)
1306         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1307                 self._sortSettings = column, order
1308                 isReverse = order == QtCore.Qt.AscendingOrder
1309                 if column == UnitData.NAME_COLUMN:
1310                         key_func = lambda item: item.name
1311                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1312                         key_func = lambda item: item.value
1313                 elif column == UnitData.UNIT_COLUMN:
1314                         key_func = lambda item: item.unit
1315                 self._children.sort(key=key_func, reverse = isReverse)
1316
1317                 self._all_changed()
1318
1319         @misc_utils.log_exception(_moduleLogger)
1320         def flags(self, index):
1321                 if not index.isValid():
1322                         return QtCore.Qt.NoItemFlags
1323
1324                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1325
1326         @misc_utils.log_exception(_moduleLogger)
1327         def headerData(self, section, orientation, role):
1328                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1329                         return UnitData.HEADERS[section]
1330
1331                 return None
1332
1333         @misc_utils.log_exception(_moduleLogger)
1334         def index(self, row, column, parent):
1335                 if not self.hasIndex(row, column, parent):
1336                         return QtCore.QModelIndex()
1337
1338                 if parent.isValid():
1339                         return QtCore.QModelIndex()
1340
1341                 parentItem = UnitData.HEADERS
1342                 childItem = self._children[row]
1343                 if childItem:
1344                         return self.createIndex(row, column, childItem)
1345                 else:
1346                         return QtCore.QModelIndex()
1347
1348         @misc_utils.log_exception(_moduleLogger)
1349         def parent(self, index):
1350                 if not index.isValid():
1351                         return QtCore.QModelIndex()
1352
1353                 childItem = index.internalPointer()
1354                 if isinstance(childItem, UnitData):
1355                         return QtCore.QModelIndex()
1356                 elif childItem is UnitData.HEADERS:
1357                         return None
1358
1359         @misc_utils.log_exception(_moduleLogger)
1360         def rowCount(self, parent):
1361                 if 0 < parent.column():
1362                         return 0
1363
1364                 if not parent.isValid():
1365                         return len(self._children)
1366                 else:
1367                         return len(self._children)
1368
1369         def get_unit(self, index):
1370                 assert 0 <= index
1371                 return self._children[index]
1372
1373         def get_unit_names(self):
1374                 for child in self._children:
1375                         yield child.name
1376
1377         def index_unit(self, unitName):
1378                 for i, child in enumerate(self._children):
1379                         if child.name == unitName:
1380                                 return i
1381                 else:
1382                         raise RuntimeError("Unit not found")
1383
1384         def update_values(self, fromIndex, userInput):
1385                 value = self._sanitize_value(userInput)
1386                 func, arg = self._children[fromIndex].conversion
1387                 base = func.to_base(value, arg)
1388                 for i, child in enumerate(self._children):
1389                         if i == fromIndex:
1390                                 continue
1391                         func, arg = child.conversion
1392                         newValue = func.from_base(base, arg)
1393                         child.update_value(newValue)
1394
1395                 if (
1396                         self._sortSettings is not None and
1397                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1398                 ):
1399                         self.sort(*self._sortSettings)
1400                         self._all_changed()
1401                 else:
1402                         self._values_changed()
1403
1404         def __len__(self):
1405                 return len(self._children)
1406
1407         def _values_changed(self):
1408                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1409                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1410                 self.dataChanged.emit(topLeft, bottomRight)
1411
1412         def _all_changed(self):
1413                 topLeft = self.createIndex(0, 0, self._children[0])
1414                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1415                 self.dataChanged.emit(topLeft, bottomRight)
1416
1417         def _sanitize_value(self, userEntry):
1418                 if self._categoryName == "Computer Numbers":
1419                         if userEntry == '':
1420                                 value = '0'
1421                         else:
1422                                 value = userEntry
1423                 else:
1424                         if userEntry == '':
1425                                 value = 0.0
1426                         else:
1427                                 value = float(userEntry)
1428                 return value
1429
1430
1431 class UnitWindow(object):
1432
1433         def __init__(self, parent, category, app):
1434                 self._app = app
1435                 self._categoryName = category
1436                 self._selectedIndex = 0
1437                 self._favoritesWindow = None
1438
1439                 self._selectedUnitName = QtGui.QLabel()
1440                 self._selectedUnitValue = QtGui.QLineEdit()
1441                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1442                 maeqt.mark_numbers_preferred(self._selectedUnitValue)
1443                 self._selectedUnitSymbol = QtGui.QLabel()
1444
1445                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1446                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1447                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1448                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1449
1450                 self._unitsModel = UnitModel(self._categoryName)
1451                 self._unitsView = QtGui.QTreeView()
1452                 self._unitsView.setModel(self._unitsModel)
1453                 self._unitsView.clicked.connect(self._on_unit_clicked)
1454                 self._unitsView.setUniformRowHeights(True)
1455                 self._unitsView.setSortingEnabled(True)
1456                 self._unitsView.setTextElideMode(QtCore.Qt.ElideNone)
1457                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1458                 if not IS_MAEMO:
1459                         self._unitsView.setAlternatingRowColors(True)
1460                 if True:
1461                         self._unitsView.setHeaderHidden(True)
1462
1463                 viewHeader = self._unitsView.header()
1464                 viewHeader.setSortIndicatorShown(True)
1465                 viewHeader.setClickable(True)
1466
1467                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1468                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1469                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1470                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1471                 viewHeader.setStretchLastSection(False)
1472
1473                 # Trying to make things faster by locking in the initial size of the immutable columns
1474                 nameSize = viewHeader.sectionSize(UnitData.NAME_COLUMN)
1475                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1476                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1477                 unitSize = viewHeader.sectionSize(UnitData.UNIT_COLUMN)
1478                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1479                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1480
1481                 self._layout = QtGui.QVBoxLayout()
1482                 self._layout.addLayout(self._selectedUnitLayout)
1483                 self._layout.addWidget(self._unitsView)
1484
1485                 centralWidget = QtGui.QWidget()
1486                 centralWidget.setLayout(self._layout)
1487
1488                 self._window = QtGui.QMainWindow(parent)
1489                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1490                 maeqt.set_autorient(self._window, True)
1491                 maeqt.set_stackable(self._window, True)
1492                 if parent is not None:
1493                         self._window.setWindowModality(QtCore.Qt.WindowModal)
1494                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1495                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1496                 self._window.setCentralWidget(centralWidget)
1497
1498                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1499                 if defaultUnitName:
1500                         self.select_unit(defaultUnitName)
1501                 else:
1502                         self._select_unit(0)
1503                 self._unitsModel.sort(UnitData.NAME_COLUMN)
1504
1505                 self._sortActionGroup = QtGui.QActionGroup(None)
1506                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
1507                 self._sortByNameAction.setText("Sort By Name")
1508                 self._sortByNameAction.setStatusTip("Sort the units by name")
1509                 self._sortByNameAction.setToolTip("Sort the units by name")
1510                 self._sortByNameAction.setCheckable(True)
1511                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
1512                 self._sortByValueAction.setText("Sort By Value")
1513                 self._sortByValueAction.setStatusTip("Sort the units by value")
1514                 self._sortByValueAction.setToolTip("Sort the units by value")
1515                 self._sortByValueAction.setCheckable(True)
1516                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
1517                 self._sortByUnitAction.setText("Sort By Unit")
1518                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
1519                 self._sortByUnitAction.setToolTip("Sort the units by unit")
1520                 self._sortByUnitAction.setCheckable(True)
1521
1522                 self._sortByValueAction.setChecked(True)
1523
1524                 self._chooseFavoritesAction = QtGui.QAction(None)
1525                 self._chooseFavoritesAction.setText("Select Favorites")
1526                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1527                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1528
1529                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1530
1531                 self._previousUnitAction = QtGui.QAction(None)
1532                 self._previousUnitAction.setText("Previous Unit")
1533                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1534                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1535
1536                 self._nextUnitAction = QtGui.QAction(None)
1537                 self._nextUnitAction.setText("Next Unit")
1538                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1539                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1540
1541                 self._closeWindowAction = QtGui.QAction(None)
1542                 self._closeWindowAction.setText("Close Window")
1543                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1544                 self._closeWindowAction.triggered.connect(self._on_close_window)
1545
1546                 if IS_MAEMO:
1547                         self._window.addAction(self._closeWindowAction)
1548                         self._window.addAction(self._app.quitAction)
1549                         self._window.addAction(self._app.fullscreenAction)
1550
1551                         fileMenu = self._window.menuBar().addMenu("&Units")
1552                         fileMenu.addAction(self._chooseFavoritesAction)
1553
1554                         viewMenu = self._window.menuBar().addMenu("&View")
1555                         viewMenu.addAction(self._app.showFavoritesAction)
1556                         viewMenu.addAction(self._app.condensedAction)
1557                         viewMenu.addSeparator()
1558                         viewMenu.addAction(self._sortByNameAction)
1559                         viewMenu.addAction(self._sortByValueAction)
1560                         viewMenu.addAction(self._sortByUnitAction)
1561                         viewMenu.addSeparator()
1562                         viewMenu.addAction(self._app.jumpAction)
1563                         viewMenu.addAction(self._app.recentAction)
1564                 else:
1565                         fileMenu = self._window.menuBar().addMenu("&Units")
1566                         fileMenu.addAction(self._chooseFavoritesAction)
1567                         fileMenu.addAction(self._closeWindowAction)
1568                         fileMenu.addAction(self._app.quitAction)
1569
1570                         viewMenu = self._window.menuBar().addMenu("&View")
1571                         viewMenu.addAction(self._app.showFavoritesAction)
1572                         viewMenu.addAction(self._app.condensedAction)
1573                         viewMenu.addSeparator()
1574                         viewMenu.addAction(self._sortByNameAction)
1575                         viewMenu.addAction(self._sortByValueAction)
1576                         viewMenu.addAction(self._sortByUnitAction)
1577                         viewMenu.addSeparator()
1578                         viewMenu.addAction(self._app.jumpAction)
1579                         viewMenu.addAction(self._app.recentAction)
1580                         viewMenu.addSeparator()
1581                         viewMenu.addAction(self._app.fullscreenAction)
1582
1583                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1584                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1585                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1586
1587                 self._window.addAction(self._app.logAction)
1588                 self._window.addAction(self._nextUnitAction)
1589                 self._window.addAction(self._previousUnitAction)
1590                 self._window.addAction(self._chooseFavoritesAction)
1591
1592                 self._update_favorites()
1593                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1594                 self._window.show()
1595
1596         @property
1597         def window(self):
1598                 return self._window
1599
1600         def show(self):
1601                 for child in self.walk_children():
1602                         child.hide()
1603                 self._window.show()
1604
1605         def hide(self):
1606                 for child in self.walk_children():
1607                         child.hide()
1608                 self._window.hide()
1609
1610         def close(self):
1611                 for child in self.walk_children():
1612                         child.window.destroyed.disconnect(self._on_child_close)
1613                         child.close()
1614                 self._window.close()
1615
1616         def set_fullscreen(self, isFullscreen):
1617                 if isFullscreen:
1618                         self._window.showFullScreen()
1619                 else:
1620                         self._window.showNormal()
1621
1622         def select_unit(self, unitName):
1623                 index = self._unitsModel.index_unit(unitName)
1624                 self._select_unit(index)
1625
1626         def walk_children(self):
1627                 if self._favoritesWindow is not None:
1628                         yield self._favoritesWindow
1629
1630         def _update_favorites(self, force = False):
1631                 if self._app.showFavoritesAction.isChecked():
1632                         unitNames = list(self._unitsModel.get_unit_names())
1633                         for i, unitName in enumerate(unitNames):
1634                                 if unitName in self._app.get_hidden_units(self._categoryName):
1635                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1636                                 else:
1637                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1638                 else:
1639                         if force:
1640                                 for i in xrange(len(self._unitsModel)):
1641                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1642
1643         @misc_utils.log_exception(_moduleLogger)
1644         def _on_show_favorites(self, checked = True):
1645                 if checked:
1646                         unitNames = list(self._unitsModel.get_unit_names())
1647                         for i, unitName in enumerate(unitNames):
1648                                 if unitName in self._app.get_hidden_units(self._categoryName):
1649                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1650                 else:
1651                         for i in xrange(len(self._unitsModel)):
1652                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1653
1654         @misc_utils.log_exception(_moduleLogger)
1655         def _on_choose_favorites(self, obj = None):
1656                 assert self._favoritesWindow is None
1657                 self._favoritesWindow = FavoritesWindow(
1658                         self._window,
1659                         self._app,
1660                         unit_data.get_units(self._categoryName),
1661                         self._app.get_hidden_units(self._categoryName)
1662                 )
1663                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1664                 return self._favoritesWindow
1665
1666         @misc_utils.log_exception(_moduleLogger)
1667         def _on_close_favorites(self, obj = None):
1668                 self._favoritesWindow = None
1669                 self._update_favorites(force=True)
1670
1671         @misc_utils.log_exception(_moduleLogger)
1672         def _on_previous_unit(self, checked = True):
1673                 self._select_unit(self._selectedIndex - 1)
1674
1675         @misc_utils.log_exception(_moduleLogger)
1676         def _on_next_unit(self, checked = True):
1677                 self._select_unit(self._selectedIndex + 1)
1678
1679         @misc_utils.log_exception(_moduleLogger)
1680         def _on_close_window(self, checked = True):
1681                 self.close()
1682
1683         @misc_utils.log_exception(_moduleLogger)
1684         def _on_sort_by_name(self, checked = False):
1685                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1686
1687         @misc_utils.log_exception(_moduleLogger)
1688         def _on_sort_by_value(self, checked = False):
1689                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1690
1691         @misc_utils.log_exception(_moduleLogger)
1692         def _on_sort_by_unit(self, checked = False):
1693                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1694
1695         @misc_utils.log_exception(_moduleLogger)
1696         def _on_unit_clicked(self, index):
1697                 self._select_unit(index.row())
1698
1699         @misc_utils.log_exception(_moduleLogger)
1700         def _on_value_edited(self, *args):
1701                 userInput = self._selectedUnitValue.text()
1702                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1703                 self._update_favorites()
1704
1705         def _select_unit(self, index):
1706                 unit = self._unitsModel.get_unit(index)
1707                 self._selectedUnitName.setText(unit.name)
1708                 self._selectedUnitValue.setText(str(unit.value))
1709                 self._selectedUnitSymbol.setText(unit.unit)
1710
1711                 self._selectedIndex = index
1712                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1713                 self._unitsView.scrollTo(qindex)
1714                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1715
1716
1717 def run_gonvert():
1718         app = QtGui.QApplication([])
1719         handle = Gonvert(app)
1720         return app.exec_()
1721
1722
1723 if __name__ == "__main__":
1724         logging.basicConfig(level = logging.DEBUG)
1725         try:
1726                 os.makedirs(constants._data_path_)
1727         except OSError, e:
1728                 if e.errno != 17:
1729                         raise
1730
1731         val = run_gonvert()
1732         sys.exit(val)