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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import sys
   7 import os
   8 import math
   9 import simplejson
  10 import logging
  11
  12 from PyQt4 import QtGui
  13 from PyQt4 import QtCore
  14
  15 import constants
  16 import maeqt
  17 from util import misc as misc_utils
  18 import unit_data
  19
  20
  21 _moduleLogger = logging.getLogger("gonvert_glade")
  22
  23
  24 IS_MAEMO = True
  25
  26
  27 def change_menu_label(widgets, labelname, newtext):
  28         item_label = widgets.get_widget(labelname).get_children()[0]
  29         item_label.set_text(newtext)
  30
  31
  32 def split_number(number):
  33         try:
  34                 fractional, integer = math.modf(number)
  35         except TypeError:
  36                 integerDisplay = number
  37                 fractionalDisplay = ""
  38         else:
  39                 integerDisplay = str(integer)
  40                 fractionalDisplay = str(fractional)
  41                 if "e+" in integerDisplay:
  42                         integerDisplay = number
  43                         fractionalDisplay = ""
  44                 elif "e-" in fractionalDisplay and 0.0 < integer:
  45                         integerDisplay = number
  46                         fractionalDisplay = ""
  47                 elif "e-" in fractionalDisplay:
  48                         integerDisplay = ""
  49                         fractionalDisplay = number
  50                 else:
  51                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  52                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  53
  54         return integerDisplay, fractionalDisplay
  55
  56
  57 class Gonvert(object):
  58
  59         _DATA_PATHS = [
  60                 os.path.dirname(__file__),
  61                 os.path.join(os.path.dirname(__file__), "../share"),
  62                 os.path.join(os.path.dirname(__file__), "../data"),
  63                 '/usr/share/gonvert',
  64                 '/opt/gonvert/share',
  65         ]
  66
  67         def __init__(self, app):
  68                 self._dataPath = ""
  69                 for dataPath in self._DATA_PATHS:
  70                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  71                         if os.path.isfile(appIconPath):
  72                                 self._dataPath = dataPath
  73                                 break
  74                 else:
  75                         raise RuntimeError("UI Descriptor not found!")
  76                 self._app = app
  77                 self._appIconPath = appIconPath
  78                 self._recent = []
  79                 self._hiddenCategories = set()
  80                 self._hiddenUnits = {}
  81                 self._clipboard = QtGui.QApplication.clipboard()
  82
  83                 self._jumpWindow = None
  84                 self._recentWindow = None
  85                 self._mainWindow = None
  86                 self._catWindow = None
  87                 self._quickWindow = None
  88
  89                 self._on_jump_close = lambda obj = None: self._on_child_close("_jumpWindow", obj)
  90                 self._on_recent_close = lambda obj = None: self._on_child_close("_recentWindow", obj)
  91                 self._on_cat_close = lambda obj = None: self._on_child_close("_catWindow", obj)
  92                 self._on_quick_close = lambda obj = None: self._on_child_close("_quickWindow", obj)
  93
  94                 self._condensedAction = QtGui.QAction(None)
  95                 self._condensedAction.setText("Condensed View")
  96                 self._condensedAction.setCheckable(True)
  97                 self._condensedAction.triggered.connect(self._on_condensed_start)
  98
  99                 self._jumpAction = QtGui.QAction(None)
 100                 self._jumpAction.setText("Quick Jump")
 101                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
 102                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
 103                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
 104                 self._jumpAction.triggered.connect(self._on_jump_start)
 105
 106                 self._recentAction = QtGui.QAction(None)
 107                 self._recentAction.setText("Recent Units")
 108                 self._recentAction.setStatusTip("View the recent units")
 109                 self._recentAction.setToolTip("View the recent units")
 110                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
 111                 self._recentAction.triggered.connect(self._on_recent_start)
 112
 113                 self._fullscreenAction = QtGui.QAction(None)
 114                 self._fullscreenAction.setText("Fullscreen")
 115                 self._fullscreenAction.setCheckable(True)
 116                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 117                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 118
 119                 self._showFavoritesAction = QtGui.QAction(None)
 120                 self._showFavoritesAction.setCheckable(True)
 121                 self._showFavoritesAction.setText("Favorites Only")
 122
 123                 self._logAction = QtGui.QAction(None)
 124                 self._logAction.setText("Log")
 125                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 126                 self._logAction.triggered.connect(self._on_log)
 127
 128                 self._quitAction = QtGui.QAction(None)
 129                 self._quitAction.setText("Quit")
 130                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 131                 self._quitAction.triggered.connect(self._on_quit)
 132
 133                 self._app.lastWindowClosed.connect(self._on_app_quit)
 134                 self.load_settings()
 135
 136                 self.request_category()
 137                 if self._recent:
 138                         self._mainWindow.select_category(self._recent[-1][0])
 139
 140         def request_category(self):
 141                 if self._mainWindow is not None:
 142                         self._mainWindow.hide()
 143
 144                 if self._condensedAction.isChecked():
 145                         if self._quickWindow is None:
 146                                 self._quickWindow = QuickConvert(None, self)
 147                                 self._quickWindow.window.destroyed.connect(self._on_quick_close)
 148                         else:
 149                                 self._quickWindow.show()
 150                         self._mainWindow = self._quickWindow
 151                 else:
 152                         if self._catWindow is None:
 153                                 self._catWindow = CategoryWindow(None, self)
 154                                 self._catWindow.window.destroyed.connect(self._on_cat_close)
 155                         else:
 156                                 self._catWindow.window.show()
 157                         self._mainWindow = self._catWindow
 158
 159                 return self._mainWindow
 160
 161         def search_units(self):
 162                 jumpWindow = QuickJump(None, self)
 163                 jumpWindow.window.destroyed.connect(self._on_jump_close)
 164                 self._fake_close_windows()
 165                 self._jumpWindow = jumpWindow
 166                 return self._jumpWindow
 167
 168         def show_recent(self):
 169                 recentWindow = Recent(None, self)
 170                 recentWindow.window.destroyed.connect(self._on_recent_close)
 171                 self._fake_close_windows()
 172                 self._recentWindow = recentWindow
 173                 return self._recentWindow
 174
 175         def add_recent(self, categoryName, unitName):
 176                 catUnit = categoryName, unitName
 177                 try:
 178                         self._recent.remove(catUnit)
 179                 except ValueError:
 180                         pass # ignore if its not already in the recent history
 181                 assert catUnit not in self._recent
 182                 self._recent.append(catUnit)
 183
 184         def get_recent_unit(self, categoryName, fromMostRecent = 0):
 185                 recentUnitName = ""
 186                 for catName, unitName in reversed(self._recent):
 187                         if catName == categoryName:
 188                                 recentUnitName = unitName
 189                                 if fromMostRecent <= 0:
 190                                         break
 191                                 else:
 192                                         fromMostRecent -= 1
 193                 return recentUnitName
 194
 195         def get_recent(self):
 196                 return reversed(self._recent)
 197
 198         @property
 199         def hiddenCategories(self):
 200                 return self._hiddenCategories
 201
 202         def get_hidden_units(self, categoryName):
 203                 try:
 204                         return self._hiddenUnits[categoryName]
 205                 except KeyError:
 206                         self._hiddenUnits[categoryName] = set()
 207                         return self._hiddenUnits[categoryName]
 208
 209         def load_settings(self):
 210                 try:
 211                         with open(constants._user_settings_, "r") as settingsFile:
 212                                 settings = simplejson.load(settingsFile)
 213                 except IOError, e:
 214                         _moduleLogger.info("No settings")
 215                         settings = {}
 216                 except ValueError:
 217                         _moduleLogger.info("Settings were corrupt")
 218                         settings = {}
 219
 220                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 221
 222                 recent = settings.get("recent", self._recent)
 223                 for category, unit in recent:
 224                         self.add_recent(category, unit)
 225
 226                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 227                 self._hiddenUnits = dict(
 228                         (catName, set(units))
 229                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 230                 )
 231
 232                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 233
 234                 self._condensedAction.setChecked(settings.get("useQuick", self._condensedAction.isChecked()))
 235
 236         def save_settings(self):
 237                 settings = {
 238                         "isFullScreen": self._fullscreenAction.isChecked(),
 239                         "recent": self._recent,
 240                         "hiddenCategories": list(self._hiddenCategories),
 241                         "hiddenUnits": dict(
 242                                 (catName, list(units))
 243                                 for (catName, units) in self._hiddenUnits.iteritems()
 244                         ),
 245                         "showFavorites": self._showFavoritesAction.isChecked(),
 246                         "useQuick": self._condensedAction.isChecked(),
 247                 }
 248                 with open(constants._user_settings_, "w") as settingsFile:
 249                         simplejson.dump(settings, settingsFile)
 250
 251         @property
 252         def appIconPath(self):
 253                 return self._appIconPath
 254
 255         @property
 256         def jumpAction(self):
 257                 return self._jumpAction
 258
 259         @property
 260         def recentAction(self):
 261                 return self._recentAction
 262
 263         @property
 264         def fullscreenAction(self):
 265                 return self._fullscreenAction
 266
 267         @property
 268         def condensedAction(self):
 269                 return self._condensedAction
 270
 271         @property
 272         def logAction(self):
 273                 return self._logAction
 274
 275         @property
 276         def quitAction(self):
 277                 return self._quitAction
 278
 279         @property
 280         def showFavoritesAction(self):
 281                 return self._showFavoritesAction
 282
 283         def _walk_children(self):
 284                 if self._catWindow is not None:
 285                         yield self._catWindow
 286                 if self._quickWindow is not None:
 287                         yield self._quickWindow
 288                 if self._jumpWindow is not None:
 289                         yield self._jumpWindow
 290                 if self._recentWindow is not None:
 291                         yield self._recentWindow
 292
 293         def _fake_close_windows(self):
 294                 if self._catWindow is not None:
 295                         self._catWindow.hide()
 296                 if self._quickWindow is not None:
 297                         self._quickWindow.hide()
 298                 if self._jumpWindow is not None:
 299                         self._jumpWindow.disconnect(self._on_jump_close)
 300                         self._jumpWindow.close()
 301                         self._jumpWindow = None
 302                 if self._recentWindow is not None:
 303                         self._recentWindow.disconnect(self._on_recent_close)
 304                         self._recentWindow.close()
 305                         self._recentWindow = None
 306
 307         def _close_windows(self):
 308                 if self._catWindow is not None:
 309                         self._catWindow.disconnect(self._on_cat_close)
 310                         self._catWindow.close()
 311                         self._catWindow = None
 312                 if self._quickWindow is not None:
 313                         self._quickWindow.disconnect(self._on_quick_close)
 314                         self._quickWindow.close()
 315                         self._quickWindow = None
 316                 if self._jumpWindow is not None:
 317                         self._jumpWindow.disconnect(self._on_jump_close)
 318                         self._jumpWindow.close()
 319                         self._jumpWindow = None
 320                 if self._recentWindow is not None:
 321                         self._recentWindow.disconnect(self._on_recent_close)
 322                         self._recentWindow.close()
 323                         self._recentWindow = None
 324
 325         @misc_utils.log_exception(_moduleLogger)
 326         def _on_app_quit(self, checked = False):
 327                 self.save_settings()
 328
 329         @misc_utils.log_exception(_moduleLogger)
 330         def _on_child_close(self, name, obj = None):
 331                 if not hasattr(self, name):
 332                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 333                         return
 334                 setattr(self, name, None)
 335
 336         @misc_utils.log_exception(_moduleLogger)
 337         def _on_toggle_fullscreen(self, checked = False):
 338                 for window in self._walk_children():
 339                         window.set_fullscreen(checked)
 340
 341         @misc_utils.log_exception(_moduleLogger)
 342         def _on_condensed_start(self, checked = False):
 343                 self.request_category()
 344                 if self._recent:
 345                         self._mainWindow.select_category(self._recent[-1][0])
 346
 347         @misc_utils.log_exception(_moduleLogger)
 348         def _on_jump_start(self, checked = False):
 349                 self.search_units()
 350
 351         @misc_utils.log_exception(_moduleLogger)
 352         def _on_recent_start(self, checked = False):
 353                 self.show_recent()
 354
 355         @misc_utils.log_exception(_moduleLogger)
 356         def _on_log(self, checked = False):
 357                 with open(constants._user_logpath_, "r") as f:
 358                         logLines = f.xreadlines()
 359                         log = "".join(logLines)
 360                         self._clipboard.setText(log)
 361
 362         @misc_utils.log_exception(_moduleLogger)
 363         def _on_quit(self, checked = False):
 364                 self._close_windows()
 365
 366
 367 class QuickJump(object):
 368
 369         MINIMAL_ENTRY = 3
 370
 371         def __init__(self, parent, app):
 372                 self._app = app
 373
 374                 self._searchLabel = QtGui.QLabel("Search:")
 375                 self._searchEntry = QtGui.QLineEdit("")
 376                 self._searchEntry.textEdited.connect(self._on_search_edited)
 377
 378                 self._entryLayout = QtGui.QHBoxLayout()
 379                 self._entryLayout.addWidget(self._searchLabel)
 380                 self._entryLayout.addWidget(self._searchEntry)
 381
 382                 self._resultsBox = QtGui.QTreeWidget()
 383                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 384                 self._resultsBox.setHeaderHidden(True)
 385                 if not IS_MAEMO:
 386                         self._resultsBox.setAlternatingRowColors(True)
 387                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 388
 389                 self._layout = QtGui.QVBoxLayout()
 390                 self._layout.addLayout(self._entryLayout)
 391                 self._layout.addWidget(self._resultsBox)
 392
 393                 centralWidget = QtGui.QWidget()
 394                 centralWidget.setLayout(self._layout)
 395
 396                 self._window = QtGui.QMainWindow(parent)
 397                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 398                 maeqt.set_autorient(self._window, True)
 399                 maeqt.set_stackable(self._window, True)
 400                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 401                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 402                 self._window.setCentralWidget(centralWidget)
 403
 404                 self._closeWindowAction = QtGui.QAction(None)
 405                 self._closeWindowAction.setText("Close")
 406                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 407                 self._closeWindowAction.triggered.connect(self._on_close_window)
 408
 409                 if IS_MAEMO:
 410                         self._window.addAction(self._closeWindowAction)
 411                         self._window.addAction(self._app.quitAction)
 412                         self._window.addAction(self._app.fullscreenAction)
 413                 else:
 414                         fileMenu = self._window.menuBar().addMenu("&Units")
 415                         fileMenu.addAction(self._closeWindowAction)
 416                         fileMenu.addAction(self._app.quitAction)
 417
 418                         viewMenu = self._window.menuBar().addMenu("&View")
 419                         viewMenu.addAction(self._app.fullscreenAction)
 420
 421                 self._window.addAction(self._app.logAction)
 422
 423                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 424                 self._window.show()
 425
 426         @property
 427         def window(self):
 428                 return self._window
 429
 430         def show(self):
 431                 self._window.show()
 432
 433         def hide(self):
 434                 self._window.hide()
 435
 436         def close(self):
 437                 self._window.close()
 438
 439         def set_fullscreen(self, isFullscreen):
 440                 if isFullscreen:
 441                         self._window.showFullScreen()
 442                 else:
 443                         self._window.showNormal()
 444
 445         @misc_utils.log_exception(_moduleLogger)
 446         def _on_close_window(self, checked = True):
 447                 self.close()
 448
 449         @misc_utils.log_exception(_moduleLogger)
 450         def _on_result_clicked(self, item, columnIndex):
 451                 categoryName = unicode(item.text(0))
 452                 unitName = unicode(item.text(1))
 453                 catWindow = self._app.request_category()
 454                 unitsWindow = catWindow.select_category(categoryName)
 455                 unitsWindow.select_unit(unitName)
 456                 self.close()
 457
 458         @misc_utils.log_exception(_moduleLogger)
 459         def _on_search_edited(self, *args):
 460                 userInput = self._searchEntry.text()
 461                 if len(userInput) <  self.MINIMAL_ENTRY:
 462                         return
 463
 464                 self._resultsBox.clear()
 465                 lowerInput = str(userInput).lower()
 466                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 467                         units = unit_data.get_units(category)
 468                         for unitIndex, unit in enumerate(units):
 469                                 loweredUnit = unit.lower()
 470                                 if lowerInput in loweredUnit:
 471                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 472                                         twi.setText(0, category)
 473                                         twi.setText(1, unit)
 474
 475
 476 class Recent(object):
 477
 478         def __init__(self, parent, app):
 479                 self._app = app
 480
 481                 self._resultsBox = QtGui.QTreeWidget()
 482                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 483                 self._resultsBox.setHeaderHidden(True)
 484                 if not IS_MAEMO:
 485                         self._resultsBox.setAlternatingRowColors(True)
 486                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 487
 488                 self._layout = QtGui.QVBoxLayout()
 489                 self._layout.addWidget(self._resultsBox)
 490
 491                 centralWidget = QtGui.QWidget()
 492                 centralWidget.setLayout(self._layout)
 493
 494                 self._window = QtGui.QMainWindow(parent)
 495                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 496                 maeqt.set_autorient(self._window, True)
 497                 maeqt.set_stackable(self._window, True)
 498                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 499                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 500                 self._window.setCentralWidget(centralWidget)
 501
 502                 for cat, unit in self._app.get_recent():
 503                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 504                         twi.setText(0, cat)
 505                         twi.setText(1, unit)
 506
 507                 self._closeWindowAction = QtGui.QAction(None)
 508                 self._closeWindowAction.setText("Close")
 509                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 510                 self._closeWindowAction.triggered.connect(self._on_close_window)
 511
 512                 if IS_MAEMO:
 513                         self._window.addAction(self._closeWindowAction)
 514                         self._window.addAction(self._app.quitAction)
 515                         self._window.addAction(self._app.fullscreenAction)
 516                 else:
 517                         fileMenu = self._window.menuBar().addMenu("&Units")
 518                         fileMenu.addAction(self._closeWindowAction)
 519                         fileMenu.addAction(self._app.quitAction)
 520
 521                         viewMenu = self._window.menuBar().addMenu("&View")
 522                         viewMenu.addAction(self._app.fullscreenAction)
 523
 524                 self._window.addAction(self._app.logAction)
 525
 526                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 527                 self._window.show()
 528
 529         @property
 530         def window(self):
 531                 return self._window
 532
 533         def show(self):
 534                 self._window.show()
 535
 536         def hide(self):
 537                 self._window.hide()
 538
 539         def close(self):
 540                 self._window.close()
 541
 542         def set_fullscreen(self, isFullscreen):
 543                 if isFullscreen:
 544                         self._window.showFullScreen()
 545                 else:
 546                         self._window.showNormal()
 547
 548         @misc_utils.log_exception(_moduleLogger)
 549         def _on_close_window(self, checked = True):
 550                 self.close()
 551
 552         @misc_utils.log_exception(_moduleLogger)
 553         def _on_result_clicked(self, item, columnIndex):
 554                 categoryName = unicode(item.text(0))
 555                 unitName = unicode(item.text(1))
 556                 catWindow = self._app.request_category()
 557                 unitsWindow = catWindow.select_category(categoryName)
 558                 unitsWindow.select_unit(unitName)
 559                 self.close()
 560
 561
 562 class QuickConvert(object):
 563
 564         def __init__(self, parent, app):
 565                 self._app = app
 566                 self._categoryName = ""
 567                 self._inputUnitName = ""
 568                 self._outputUnitName = ""
 569                 self._unitNames = []
 570                 self._favoritesWindow = None
 571
 572                 self._inputUnitValue = QtGui.QLineEdit()
 573                 self._inputUnitValue.setInputMethodHints(QtCore.Qt.ImhPreferNumbers)
 574                 self._inputUnitValue.textEdited.connect(self._on_value_edited)
 575                 self._inputUnitSymbol = QtGui.QLabel()
 576
 577                 self._outputUnitValue = QtGui.QLabel()
 578                 self._outputUnitSymbol = QtGui.QLabel()
 579
 580                 self._conversionLayout = QtGui.QHBoxLayout()
 581                 self._conversionLayout.addWidget(self._inputUnitValue)
 582                 self._conversionLayout.addWidget(self._inputUnitSymbol)
 583                 self._conversionLayout.addWidget(self._outputUnitValue)
 584                 self._conversionLayout.addWidget(self._outputUnitSymbol)
 585
 586                 self._categoryView = QtGui.QTreeWidget()
 587                 self._categoryView.setHeaderLabels(["Categories"])
 588                 self._categoryView.setHeaderHidden(False)
 589                 if not IS_MAEMO:
 590                         self._categoryView.setAlternatingRowColors(True)
 591                 self._categoryView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 592                 self._categoryView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 593                 for catName in unit_data.UNIT_CATEGORIES:
 594                         twi = QtGui.QTreeWidgetItem(self._categoryView)
 595                         twi.setText(0, catName)
 596                 self._categorySelection = self._categoryView.selectionModel()
 597                 self._categorySelection.selectionChanged.connect(self._on_category_selection_changed)
 598
 599                 self._inputView = QtGui.QTreeWidget()
 600                 self._inputView.setHeaderLabels(["From", "Name"])
 601                 self._inputView.setHeaderHidden(False)
 602                 self._inputView.header().hideSection(1)
 603                 if not IS_MAEMO:
 604                         self._inputView.setAlternatingRowColors(True)
 605                 self._inputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 606                 self._inputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 607                 self._inputSelection = self._inputView.selectionModel()
 608                 self._inputSelection.selectionChanged.connect(self._on_input_selection_changed)
 609
 610                 self._outputView = QtGui.QTreeWidget()
 611                 self._outputView.setHeaderLabels(["To", "Name"])
 612                 self._outputView.setHeaderHidden(False)
 613                 self._outputView.header().hideSection(1)
 614                 if not IS_MAEMO:
 615                         self._outputView.setAlternatingRowColors(True)
 616                 self._outputView.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 617                 self._outputView.setSelectionMode(QtGui.QAbstractItemView.SingleSelection)
 618                 self._outputWidgets = []
 619                 self._outputSelection = self._outputView.selectionModel()
 620                 self._outputSelection.selectionChanged.connect(self._on_output_selection_changed)
 621
 622                 self._selectionLayout = QtGui.QHBoxLayout()
 623                 self._selectionLayout.addWidget(self._categoryView)
 624                 self._selectionLayout.addWidget(self._inputView)
 625                 self._selectionLayout.addWidget(self._outputView)
 626
 627                 self._layout = QtGui.QVBoxLayout()
 628                 self._layout.addLayout(self._conversionLayout)
 629                 self._layout.addLayout(self._selectionLayout)
 630
 631                 centralWidget = QtGui.QWidget()
 632                 centralWidget.setLayout(self._layout)
 633
 634                 self._window = QtGui.QMainWindow(parent)
 635                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 636                 maeqt.set_autorient(self._window, True)
 637                 maeqt.set_stackable(self._window, True)
 638                 self._window.setWindowTitle("%s - Quick Convert" % (constants.__pretty_app_name__, ))
 639                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 640                 self._window.setCentralWidget(centralWidget)
 641
 642                 self._chooseCatFavoritesAction = QtGui.QAction(None)
 643                 self._chooseCatFavoritesAction.setText("Select Categories")
 644                 self._chooseCatFavoritesAction.triggered.connect(self._on_choose_category_favorites)
 645
 646                 self._chooseUnitFavoritesAction = QtGui.QAction(None)
 647                 self._chooseUnitFavoritesAction.setText("Select Units")
 648                 self._chooseUnitFavoritesAction.triggered.connect(self._on_choose_unit_favorites)
 649                 self._chooseUnitFavoritesAction.setEnabled(False)
 650
 651                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 652
 653                 self._closeWindowAction = QtGui.QAction(None)
 654                 self._closeWindowAction.setText("Close Window")
 655                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 656                 self._closeWindowAction.triggered.connect(self._on_close_window)
 657
 658                 if IS_MAEMO:
 659                         self._window.addAction(self._closeWindowAction)
 660                         self._window.addAction(self._app.quitAction)
 661                         self._window.addAction(self._app.fullscreenAction)
 662
 663                         fileMenu = self._window.menuBar().addMenu("&Units")
 664                         fileMenu.addAction(self._chooseCatFavoritesAction)
 665                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 666
 667                         viewMenu = self._window.menuBar().addMenu("&View")
 668                         viewMenu.addAction(self._app.showFavoritesAction)
 669                         viewMenu.addAction(self._app.condensedAction)
 670                         viewMenu.addSeparator()
 671                         viewMenu.addAction(self._app.jumpAction)
 672                         viewMenu.addAction(self._app.recentAction)
 673                 else:
 674                         fileMenu = self._window.menuBar().addMenu("&Units")
 675                         fileMenu.addAction(self._chooseCatFavoritesAction)
 676                         fileMenu.addAction(self._chooseUnitFavoritesAction)
 677                         fileMenu.addAction(self._closeWindowAction)
 678                         fileMenu.addAction(self._app.quitAction)
 679
 680                         viewMenu = self._window.menuBar().addMenu("&View")
 681                         viewMenu.addAction(self._app.showFavoritesAction)
 682                         viewMenu.addAction(self._app.condensedAction)
 683                         viewMenu.addSeparator()
 684                         viewMenu.addAction(self._app.jumpAction)
 685                         viewMenu.addAction(self._app.recentAction)
 686                         viewMenu.addSeparator()
 687                         viewMenu.addAction(self._app.fullscreenAction)
 688
 689                 self._window.addAction(self._app.logAction)
 690
 691                 self._update_favorites()
 692                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 693                 self._window.show()
 694
 695         @property
 696         def window(self):
 697                 return self._window
 698
 699         def show(self):
 700                 self._window.show()
 701
 702         def hide(self):
 703                 self._window.hide()
 704
 705         def close(self):
 706                 self._window.close()
 707
 708         def set_fullscreen(self, isFullscreen):
 709                 if isFullscreen:
 710                         self._window.showFullScreen()
 711                 else:
 712                         self._window.showNormal()
 713
 714         def select_category(self, categoryName):
 715                 self._inputUnitName = ""
 716                 self._outputUnitName = ""
 717                 self._inputUnitValue.setText("")
 718                 self._inputUnitSymbol.setText("")
 719                 self._inputView.clear()
 720                 self._outputUnitValue.setText("")
 721                 self._outputUnitSymbol.setText("")
 722                 self._outputView.clear()
 723                 self._categoryName = categoryName
 724                 self._chooseUnitFavoritesAction.setEnabled(True)
 725
 726                 unitData = unit_data.UNIT_DESCRIPTIONS[categoryName]
 727                 self._unitNames = list(unit_data.get_units(categoryName))
 728                 self._unitNames.sort()
 729                 for key in self._unitNames:
 730                         conversion, unit, description = unitData[key]
 731                         if not unit:
 732                                 unit = key
 733
 734                         twi = QtGui.QTreeWidgetItem(self._inputView)
 735                         twi.setText(0, unit)
 736                         twi.setText(1, key)
 737
 738                         twi = QtGui.QTreeWidgetItem(self._outputView)
 739                         twi.setText(0, unit)
 740                         twi.setText(1, key)
 741
 742                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
 743                 rootIndex = self._categoryView.rootIndex()
 744                 currentIndex = self._categoryView.model().index(i, 0, rootIndex)
 745                 self._categoryView.scrollTo(currentIndex)
 746
 747                 defaultInputUnitName = self._app.get_recent_unit(categoryName)
 748                 if defaultInputUnitName:
 749                         self.select_input(defaultInputUnitName)
 750                         defaultOutputUnitName = self._app.get_recent_unit(categoryName, 1)
 751                         assert defaultOutputUnitName
 752                         self.select_output(defaultOutputUnitName)
 753
 754                 return self
 755
 756         def select_unit(self, name):
 757                 self.select_input(name)
 758
 759         def select_input(self, name):
 760                 self._app.add_recent(self._categoryName, name)
 761                 self._inputUnitName = name
 762
 763                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 764                 conversion, unit, description = unitData[name]
 765
 766                 self._inputUnitSymbol.setText(unit if unit else name)
 767
 768                 i = self._unitNames.index(name)
 769                 rootIndex = self._inputView.rootIndex()
 770                 currentIndex = self._inputView.model().index(i, 0, rootIndex)
 771                 self._inputView.scrollTo(currentIndex)
 772
 773         def select_output(self, name):
 774                 # Add the output to recent but don't make things weird by making it the most recent
 775                 self._app.add_recent(self._categoryName, name)
 776                 self._app.add_recent(self._categoryName, self._inputUnitName)
 777                 self._outputUnitName = name
 778
 779                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 780                 conversion, unit, description = unitData[name]
 781
 782                 self._outputUnitSymbol.setText(unit if unit else name)
 783
 784                 i = self._unitNames.index(name)
 785                 rootIndex = self._outputView.rootIndex()
 786                 currentIndex = self._outputView.model().index(i, 0, rootIndex)
 787                 self._outputView.scrollTo(currentIndex)
 788
 789         def _sanitize_value(self, userEntry):
 790                 if self._categoryName == "Computer Numbers":
 791                         if userEntry == '':
 792                                 value = '0'
 793                         else:
 794                                 value = userEntry
 795                 else:
 796                         if userEntry == '':
 797                                 value = 0.0
 798                         else:
 799                                 value = float(userEntry)
 800                 return value
 801
 802         def _update_favorites(self):
 803                 if self._app.showFavoritesAction.isChecked():
 804                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 805                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 806                                 if catName in self._app.hiddenCategories:
 807                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 808                                 else:
 809                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 810
 811                         for i, unitName in enumerate(self._unitNames):
 812                                 if unitName in self._app.get_hidden_units(self._categoryName):
 813                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 814                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 815                                 else:
 816                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 817                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 818                 else:
 819                         for i in xrange(self._categoryView.topLevelItemCount()):
 820                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 821
 822                         for i in xrange(len(self._unitNames)):
 823                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 824                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 825
 826         @misc_utils.log_exception(_moduleLogger)
 827         def _on_close_window(self, checked = True):
 828                 self.close()
 829
 830         @misc_utils.log_exception(_moduleLogger)
 831         def _on_show_favorites(self, checked = True):
 832                 if checked:
 833                         assert self._categoryView.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 834                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 835                                 if catName in self._app.hiddenCategories:
 836                                         self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), True)
 837
 838                         for i, unitName in enumerate(self._unitNames):
 839                                 if unitName in self._app.get_hidden_units(self._categoryName):
 840                                         self._inputView.setRowHidden(i, self._inputView.rootIndex(), True)
 841                                         self._outputView.setRowHidden(i, self._outputView.rootIndex(), True)
 842                 else:
 843                         for i in xrange(self._categoryView.topLevelItemCount()):
 844                                 self._categoryView.setRowHidden(i, self._categoryView.rootIndex(), False)
 845
 846                         for i in xrange(len(self._unitNames)):
 847                                 self._inputView.setRowHidden(i, self._inputView.rootIndex(), False)
 848                                 self._outputView.setRowHidden(i, self._outputView.rootIndex(), False)
 849
 850         @misc_utils.log_exception(_moduleLogger)
 851         def _on_choose_category_favorites(self, obj = None):
 852                 assert self._favoritesWindow is None
 853                 self._favoritesWindow = FavoritesWindow(
 854                         self._window,
 855                         self._app,
 856                         unit_data.UNIT_CATEGORIES,
 857                         self._app.hiddenCategories
 858                 )
 859                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 860                 return self._favoritesWindow
 861
 862         @misc_utils.log_exception(_moduleLogger)
 863         def _on_choose_unit_favorites(self, obj = None):
 864                 assert self._favoritesWindow is None
 865                 self._favoritesWindow = FavoritesWindow(
 866                         self._window,
 867                         self._app,
 868                         unit_data.get_units(self._categoryName),
 869                         self._app.get_hidden_units(self._categoryName)
 870                 )
 871                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 872                 return self._favoritesWindow
 873
 874         @misc_utils.log_exception(_moduleLogger)
 875         def _on_close_favorites(self, obj = None):
 876                 self._favoritesWindow = None
 877                 self._update_favorites()
 878
 879         @misc_utils.log_exception(_moduleLogger)
 880         def _on_value_edited(self, *args):
 881                 assert self._categoryName
 882                 assert self._inputUnitName
 883                 assert self._outputUnitName
 884
 885                 userInput = str(self._inputUnitValue.text())
 886                 value = self._sanitize_value(userInput)
 887
 888                 unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 889                 inputConversion, _, _ = unitData[self._inputUnitName]
 890                 outputConversion, _, _ = unitData[self._outputUnitName]
 891
 892                 func, arg = inputConversion
 893                 base = func.to_base(value, arg)
 894
 895                 func, arg = outputConversion
 896                 newValue = func.from_base(base, arg)
 897                 self._outputUnitValue.setText(str(newValue))
 898
 899         @misc_utils.log_exception(_moduleLogger)
 900         def _on_category_selection_changed(self, selected, deselected):
 901                 selectedNames = [
 902                         str(item.text(0))
 903                         for item in self._categoryView.selectedItems()
 904                 ]
 905                 assert len(selectedNames) == 1
 906                 self.select_category(selectedNames[0])
 907
 908         @misc_utils.log_exception(_moduleLogger)
 909         def _on_input_selection_changed(self, selected, deselected):
 910                 selectedNames = [
 911                         str(item.text(1))
 912                         for item in self._inputView.selectedItems()
 913                 ]
 914                 if selectedNames:
 915                         assert len(selectedNames) == 1
 916                         name = selectedNames[0]
 917                         self.select_input(name)
 918                 else:
 919                         pass
 920
 921         @misc_utils.log_exception(_moduleLogger)
 922         def _on_output_selection_changed(self, selected, deselected):
 923                 selectedNames = [
 924                         str(item.text(1))
 925                         for item in self._outputView.selectedItems()
 926                 ]
 927                 if selectedNames:
 928                         assert len(selectedNames) == 1
 929                         name = selectedNames[0]
 930                         self.select_output(name)
 931                 else:
 932                         pass
 933
 934
 935 class FavoritesWindow(object):
 936
 937         def __init__(self, parent, app, source, hidden):
 938                 self._app = app
 939                 self._source = list(source)
 940                 self._hidden = hidden
 941
 942                 self._categories = QtGui.QTreeWidget()
 943                 self._categories.setHeaderLabels(["Categories"])
 944                 self._categories.setHeaderHidden(True)
 945                 if not IS_MAEMO:
 946                         self._categories.setAlternatingRowColors(True)
 947                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 948                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 949                 self._childWidgets = []
 950                 for catName in self._source:
 951                         twi = QtGui.QTreeWidgetItem(self._categories)
 952                         twi.setText(0, catName)
 953                         self._childWidgets.append(twi)
 954                         if catName not in self._hidden:
 955                                 self._categories.setItemSelected(twi, True)
 956                 self._selection = self._categories.selectionModel()
 957                 self._selection.selectionChanged.connect(self._on_selection_changed)
 958
 959                 self._allButton = QtGui.QPushButton("All")
 960                 self._allButton.clicked.connect(self._on_select_all)
 961                 self._invertButton = QtGui.QPushButton("Invert")
 962                 self._invertButton.clicked.connect(self._on_invert_selection)
 963                 self._noneButton = QtGui.QPushButton("None")
 964                 self._noneButton.clicked.connect(self._on_select_none)
 965
 966                 self._buttonLayout = QtGui.QHBoxLayout()
 967                 self._buttonLayout.addWidget(self._allButton)
 968                 self._buttonLayout.addWidget(self._invertButton)
 969                 self._buttonLayout.addWidget(self._noneButton)
 970
 971                 self._layout = QtGui.QVBoxLayout()
 972                 self._layout.addWidget(self._categories)
 973                 self._layout.addLayout(self._buttonLayout)
 974
 975                 centralWidget = QtGui.QWidget()
 976                 centralWidget.setLayout(self._layout)
 977
 978                 self._window = QtGui.QMainWindow(parent)
 979                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 980                 maeqt.set_autorient(self._window, True)
 981                 maeqt.set_stackable(self._window, True)
 982                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 983                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 984                 self._window.setCentralWidget(centralWidget)
 985
 986                 self._closeWindowAction = QtGui.QAction(None)
 987                 self._closeWindowAction.setText("Close")
 988                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 989                 self._closeWindowAction.triggered.connect(self._on_close_window)
 990
 991                 if IS_MAEMO:
 992                         self._window.addAction(self._closeWindowAction)
 993                         self._window.addAction(self._app.quitAction)
 994                         self._window.addAction(self._app.fullscreenAction)
 995                 else:
 996                         fileMenu = self._window.menuBar().addMenu("&Units")
 997                         fileMenu.addAction(self._closeWindowAction)
 998                         fileMenu.addAction(self._app.quitAction)
 999
1000                         viewMenu = self._window.menuBar().addMenu("&View")
1001                         viewMenu.addAction(self._app.fullscreenAction)
1002
1003                 self._window.addAction(self._app.logAction)
1004
1005                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1006                 self._window.show()
1007
1008         @property
1009         def window(self):
1010                 return self._window
1011
1012         def show(self):
1013                 self._window.show()
1014
1015         def hide(self):
1016                 self._window.hide()
1017
1018         def close(self):
1019                 self._window.close()
1020
1021         def set_fullscreen(self, isFullscreen):
1022                 if isFullscreen:
1023                         self._window.showFullScreen()
1024                 else:
1025                         self._window.showNormal()
1026
1027         @misc_utils.log_exception(_moduleLogger)
1028         def _on_select_all(self, checked = False):
1029                 for child in self._childWidgets:
1030                         self._categories.setItemSelected(child, True)
1031
1032         @misc_utils.log_exception(_moduleLogger)
1033         def _on_invert_selection(self, checked = False):
1034                 for child in self._childWidgets:
1035                         isSelected = self._categories.isItemSelected(child)
1036                         self._categories.setItemSelected(child, not isSelected)
1037
1038         @misc_utils.log_exception(_moduleLogger)
1039         def _on_select_none(self, checked = False):
1040                 for child in self._childWidgets:
1041                         self._categories.setItemSelected(child, False)
1042
1043         @misc_utils.log_exception(_moduleLogger)
1044         def _on_selection_changed(self, selected, deselected):
1045                 self._hidden.clear()
1046                 selectedNames = set(
1047                         str(item.text(0))
1048                         for item in self._categories.selectedItems()
1049                 )
1050                 for name in self._source:
1051                         if name not in selectedNames:
1052                                 self._hidden.add(name)
1053
1054         @misc_utils.log_exception(_moduleLogger)
1055         def _on_close_window(self, checked = True):
1056                 self.close()
1057
1058
1059 class CategoryWindow(object):
1060
1061         def __init__(self, parent, app):
1062                 self._app = app
1063                 self._unitWindow = None
1064                 self._favoritesWindow = None
1065
1066                 self._categories = QtGui.QTreeWidget()
1067                 self._categories.setHeaderLabels(["Categories"])
1068                 self._categories.itemClicked.connect(self._on_category_clicked)
1069                 self._categories.setHeaderHidden(True)
1070                 if not IS_MAEMO:
1071                         self._categories.setAlternatingRowColors(True)
1072                 for catName in unit_data.UNIT_CATEGORIES:
1073                         twi = QtGui.QTreeWidgetItem(self._categories)
1074                         twi.setText(0, catName)
1075
1076                 self._layout = QtGui.QVBoxLayout()
1077                 self._layout.addWidget(self._categories)
1078
1079                 centralWidget = QtGui.QWidget()
1080                 centralWidget.setLayout(self._layout)
1081
1082                 self._window = QtGui.QMainWindow(parent)
1083                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1084                 maeqt.set_autorient(self._window, True)
1085                 maeqt.set_stackable(self._window, True)
1086                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
1087                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
1088                 self._window.setCentralWidget(centralWidget)
1089
1090                 self._chooseFavoritesAction = QtGui.QAction(None)
1091                 self._chooseFavoritesAction.setText("Select Favorites")
1092                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1093                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1094
1095                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1096
1097                 self._closeWindowAction = QtGui.QAction(None)
1098                 self._closeWindowAction.setText("Close")
1099                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1100                 self._closeWindowAction.triggered.connect(self._on_close_window)
1101
1102                 if IS_MAEMO:
1103                         fileMenu = self._window.menuBar().addMenu("&Units")
1104                         fileMenu.addAction(self._chooseFavoritesAction)
1105
1106                         viewMenu = self._window.menuBar().addMenu("&View")
1107                         viewMenu.addAction(self._app.showFavoritesAction)
1108                         viewMenu.addAction(self._app.condensedAction)
1109                         viewMenu.addSeparator()
1110                         viewMenu.addAction(self._app.jumpAction)
1111                         viewMenu.addAction(self._app.recentAction)
1112
1113                         self._window.addAction(self._closeWindowAction)
1114                         self._window.addAction(self._app.quitAction)
1115                         self._window.addAction(self._app.fullscreenAction)
1116                 else:
1117                         fileMenu = self._window.menuBar().addMenu("&Units")
1118                         fileMenu.addAction(self._chooseFavoritesAction)
1119                         fileMenu.addAction(self._closeWindowAction)
1120                         fileMenu.addAction(self._app.quitAction)
1121
1122                         viewMenu = self._window.menuBar().addMenu("&View")
1123                         viewMenu.addAction(self._app.showFavoritesAction)
1124                         viewMenu.addAction(self._app.condensedAction)
1125                         viewMenu.addSeparator()
1126                         viewMenu.addAction(self._app.jumpAction)
1127                         viewMenu.addAction(self._app.recentAction)
1128                         viewMenu.addSeparator()
1129                         viewMenu.addAction(self._app.fullscreenAction)
1130
1131                 self._window.addAction(self._app.logAction)
1132
1133                 self._update_favorites()
1134                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1135                 self._window.show()
1136
1137         @property
1138         def window(self):
1139                 return self._window
1140
1141         def walk_children(self):
1142                 if self._unitWindow is not None:
1143                         yield self._unitWindow
1144                 if self._favoritesWindow is not None:
1145                         yield self._favoritesWindow
1146
1147         def show(self):
1148                 for child in self.walk_children():
1149                         child.show()
1150                 self._window.show()
1151
1152         def hide(self):
1153                 for child in self.walk_children():
1154                         child.hide()
1155                 self._window.hide()
1156
1157         def close(self):
1158                 for child in self.walk_children():
1159                         child.window.destroyed.disconnect(self._on_child_close)
1160                         child.close()
1161                 self._window.close()
1162
1163         def select_category(self, categoryName):
1164                 for child in self.walk_children():
1165                         child.window.destroyed.disconnect(self._on_child_close)
1166                         child.close()
1167                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
1168                 self._unitWindow.window.destroyed.connect(self._on_child_close)
1169
1170                 i = unit_data.UNIT_CATEGORIES.index(categoryName)
1171                 rootIndex = self._categories.rootIndex()
1172                 currentIndex = self._categories.model().index(i, 0, rootIndex)
1173                 self._categories.scrollTo(currentIndex)
1174                 return self._unitWindow
1175
1176         def set_fullscreen(self, isFullscreen):
1177                 if isFullscreen:
1178                         self._window.showFullScreen()
1179                 else:
1180                         self._window.showNormal()
1181                 for child in self.walk_children():
1182                         child.set_fullscreen(isFullscreen)
1183
1184         def _update_favorites(self):
1185                 if self._app.showFavoritesAction.isChecked():
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                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1192                 else:
1193                         for i in xrange(self._categories.topLevelItemCount()):
1194                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1195
1196         @misc_utils.log_exception(_moduleLogger)
1197         def _on_show_favorites(self, checked = True):
1198                 if checked:
1199                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
1200                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
1201                                 if catName in self._app.hiddenCategories:
1202                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
1203                 else:
1204                         for i in xrange(self._categories.topLevelItemCount()):
1205                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
1206
1207         @misc_utils.log_exception(_moduleLogger)
1208         def _on_choose_favorites(self, obj = None):
1209                 assert self._favoritesWindow is None
1210                 self._favoritesWindow = FavoritesWindow(
1211                         self._window,
1212                         self._app,
1213                         unit_data.UNIT_CATEGORIES,
1214                         self._app.hiddenCategories
1215                 )
1216                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1217                 return self._favoritesWindow
1218
1219         @misc_utils.log_exception(_moduleLogger)
1220         def _on_close_favorites(self, obj = None):
1221                 self._favoritesWindow = None
1222                 self._update_favorites()
1223
1224         @misc_utils.log_exception(_moduleLogger)
1225         def _on_child_close(self, obj = None):
1226                 self._unitWindow = None
1227
1228         @misc_utils.log_exception(_moduleLogger)
1229         def _on_close_window(self, checked = True):
1230                 self.close()
1231
1232         @misc_utils.log_exception(_moduleLogger)
1233         def _on_category_clicked(self, item, columnIndex):
1234                 categoryName = unicode(item.text(0))
1235                 self.select_category(categoryName)
1236
1237
1238 class UnitData(object):
1239
1240         HEADERS = ["Name", "Value", "", "Unit"]
1241         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
1242         NAME_COLUMN = 0
1243         VALUE_COLUMN_0 = 1
1244         VALUE_COLUMN_1 = 2
1245         UNIT_COLUMN = 3
1246
1247         def __init__(self, name, unit, description, conversion):
1248                 self._name = name
1249                 self._unit = unit
1250                 self._description = description
1251                 self._conversion = conversion
1252
1253                 self._value = 0.0
1254                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
1255
1256         @property
1257         def name(self):
1258                 return self._name
1259
1260         @property
1261         def value(self):
1262                 return self._value
1263
1264         def update_value(self, newValue):
1265                 self._value = newValue
1266                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
1267
1268         @property
1269         def unit(self):
1270                 return self._unit
1271
1272         @property
1273         def conversion(self):
1274                 return self._conversion
1275
1276         def data(self, column):
1277                 try:
1278                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
1279                 except IndexError:
1280                         return None
1281
1282
1283 class UnitModel(QtCore.QAbstractItemModel):
1284
1285         def __init__(self, categoryName, parent=None):
1286                 super(UnitModel, self).__init__(parent)
1287                 self._categoryName = categoryName
1288                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
1289
1290                 self._children = []
1291                 for key in unit_data.get_units(self._categoryName):
1292                         conversion, unit, description = self._unitData[key]
1293                         self._children.append(UnitData(key, unit, description, conversion))
1294                 self._sortSettings = None
1295
1296         @misc_utils.log_exception(_moduleLogger)
1297         def columnCount(self, parent):
1298                 if parent.isValid():
1299                         return 0
1300                 else:
1301                         return len(UnitData.HEADERS)
1302
1303         @misc_utils.log_exception(_moduleLogger)
1304         def data(self, index, role):
1305                 if not index.isValid():
1306                         return None
1307                 elif role == QtCore.Qt.TextAlignmentRole:
1308                         return UnitData.ALIGNMENT[index.column()]
1309                 elif role != QtCore.Qt.DisplayRole:
1310                         return None
1311
1312                 item = index.internalPointer()
1313                 if isinstance(item, UnitData):
1314                         return item.data(index.column())
1315                 elif item is UnitData.HEADERS:
1316                         return item[index.column()]
1317
1318         @misc_utils.log_exception(_moduleLogger)
1319         def sort(self, column, order = QtCore.Qt.AscendingOrder):
1320                 self._sortSettings = column, order
1321                 isReverse = order == QtCore.Qt.AscendingOrder
1322                 if column == UnitData.NAME_COLUMN:
1323                         key_func = lambda item: item.name
1324                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
1325                         key_func = lambda item: item.value
1326                 elif column == UnitData.UNIT_COLUMN:
1327                         key_func = lambda item: item.unit
1328                 self._children.sort(key=key_func, reverse = isReverse)
1329
1330                 self._all_changed()
1331
1332         @misc_utils.log_exception(_moduleLogger)
1333         def flags(self, index):
1334                 if not index.isValid():
1335                         return QtCore.Qt.NoItemFlags
1336
1337                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
1338
1339         @misc_utils.log_exception(_moduleLogger)
1340         def headerData(self, section, orientation, role):
1341                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
1342                         return UnitData.HEADERS[section]
1343
1344                 return None
1345
1346         @misc_utils.log_exception(_moduleLogger)
1347         def index(self, row, column, parent):
1348                 if not self.hasIndex(row, column, parent):
1349                         return QtCore.QModelIndex()
1350
1351                 if parent.isValid():
1352                         return QtCore.QModelIndex()
1353
1354                 parentItem = UnitData.HEADERS
1355                 childItem = self._children[row]
1356                 if childItem:
1357                         return self.createIndex(row, column, childItem)
1358                 else:
1359                         return QtCore.QModelIndex()
1360
1361         @misc_utils.log_exception(_moduleLogger)
1362         def parent(self, index):
1363                 if not index.isValid():
1364                         return QtCore.QModelIndex()
1365
1366                 childItem = index.internalPointer()
1367                 if isinstance(childItem, UnitData):
1368                         return QtCore.QModelIndex()
1369                 elif childItem is UnitData.HEADERS:
1370                         return None
1371
1372         @misc_utils.log_exception(_moduleLogger)
1373         def rowCount(self, parent):
1374                 if 0 < parent.column():
1375                         return 0
1376
1377                 if not parent.isValid():
1378                         return len(self._children)
1379                 else:
1380                         return len(self._children)
1381
1382         def get_unit(self, index):
1383                 assert 0 <= index
1384                 return self._children[index]
1385
1386         def get_unit_names(self):
1387                 for child in self._children:
1388                         yield child.name
1389
1390         def index_unit(self, unitName):
1391                 for i, child in enumerate(self._children):
1392                         if child.name == unitName:
1393                                 return i
1394                 else:
1395                         raise RuntimeError("Unit not found")
1396
1397         def update_values(self, fromIndex, userInput):
1398                 value = self._sanitize_value(userInput)
1399                 func, arg = self._children[fromIndex].conversion
1400                 base = func.to_base(value, arg)
1401                 for i, child in enumerate(self._children):
1402                         if i == fromIndex:
1403                                 continue
1404                         func, arg = child.conversion
1405                         newValue = func.from_base(base, arg)
1406                         child.update_value(newValue)
1407
1408                 if (
1409                         self._sortSettings is not None and
1410                         self._sortSettings[0]  in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]
1411                 ):
1412                         # Sort takes care of marking everything as changed
1413                         self.sort(*self._sortSettings)
1414                 else:
1415                         self._values_changed()
1416
1417         def __len__(self):
1418                 return len(self._children)
1419
1420         def _values_changed(self):
1421                 topLeft = self.createIndex(0, UnitData.VALUE_COLUMN_0, self._children[0])
1422                 bottomRight = self.createIndex(len(self._children)-1, UnitData.VALUE_COLUMN_1, self._children[-1])
1423                 self.dataChanged.emit(topLeft, bottomRight)
1424
1425         def _all_changed(self):
1426                 topLeft = self.createIndex(0, 0, self._children[0])
1427                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
1428                 self.dataChanged.emit(topLeft, bottomRight)
1429
1430         def _sanitize_value(self, userEntry):
1431                 if self._categoryName == "Computer Numbers":
1432                         if userEntry == '':
1433                                 value = '0'
1434                         else:
1435                                 value = userEntry
1436                 else:
1437                         if userEntry == '':
1438                                 value = 0.0
1439                         else:
1440                                 value = float(userEntry)
1441                 return value
1442
1443
1444 class UnitWindow(object):
1445
1446         def __init__(self, parent, category, app):
1447                 self._app = app
1448                 self._categoryName = category
1449                 self._selectedIndex = 0
1450                 self._favoritesWindow = None
1451
1452                 self._selectedUnitName = QtGui.QLabel()
1453                 self._selectedUnitValue = QtGui.QLineEdit()
1454                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
1455                 maeqt.mark_numbers_preferred(self._selectedUnitValue)
1456                 self._selectedUnitSymbol = QtGui.QLabel()
1457
1458                 self._selectedUnitLayout = QtGui.QHBoxLayout()
1459                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
1460                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
1461                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
1462
1463                 self._unitsModel = UnitModel(self._categoryName)
1464                 self._unitsView = QtGui.QTreeView()
1465                 self._unitsView.setModel(self._unitsModel)
1466                 self._unitsView.clicked.connect(self._on_unit_clicked)
1467                 self._unitsView.setUniformRowHeights(True)
1468                 self._unitsView.setSortingEnabled(True)
1469                 self._unitsView.setTextElideMode(QtCore.Qt.ElideNone)
1470                 self._unitsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
1471                 if not IS_MAEMO:
1472                         self._unitsView.setAlternatingRowColors(True)
1473                 if True:
1474                         self._unitsView.setHeaderHidden(True)
1475
1476                 viewHeader = self._unitsView.header()
1477                 viewHeader.setSortIndicatorShown(True)
1478                 viewHeader.setClickable(True)
1479
1480                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.ResizeToContents)
1481                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_0, QtGui.QHeaderView.ResizeToContents)
1482                 viewHeader.setResizeMode(UnitData.VALUE_COLUMN_1, QtGui.QHeaderView.ResizeToContents)
1483                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.ResizeToContents)
1484                 viewHeader.setStretchLastSection(False)
1485
1486                 # Trying to make things faster by locking in the initial size of the immutable columns
1487                 nameSize = min(viewHeader.sectionSize(UnitData.NAME_COLUMN), 125)
1488                 viewHeader.setResizeMode(UnitData.NAME_COLUMN, QtGui.QHeaderView.Fixed)
1489                 viewHeader.resizeSection(UnitData.NAME_COLUMN, nameSize)
1490                 unitSize = min(viewHeader.sectionSize(UnitData.UNIT_COLUMN), 125)
1491                 viewHeader.setResizeMode(UnitData.UNIT_COLUMN, QtGui.QHeaderView.Fixed)
1492                 viewHeader.resizeSection(UnitData.UNIT_COLUMN, unitSize)
1493
1494                 self._layout = QtGui.QVBoxLayout()
1495                 self._layout.addLayout(self._selectedUnitLayout)
1496                 self._layout.addWidget(self._unitsView)
1497
1498                 centralWidget = QtGui.QWidget()
1499                 centralWidget.setLayout(self._layout)
1500
1501                 self._window = QtGui.QMainWindow(parent)
1502                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
1503                 maeqt.set_autorient(self._window, True)
1504                 maeqt.set_stackable(self._window, True)
1505                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
1506                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
1507                 self._window.setCentralWidget(centralWidget)
1508
1509                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
1510                 if defaultUnitName:
1511                         self.select_unit(defaultUnitName)
1512                 else:
1513                         self._select_unit(0)
1514
1515                 self._sortActionGroup = QtGui.QActionGroup(None)
1516                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
1517                 self._sortByNameAction.setText("Sort By Name")
1518                 self._sortByNameAction.setStatusTip("Sort the units by name")
1519                 self._sortByNameAction.setToolTip("Sort the units by name")
1520                 self._sortByNameAction.setCheckable(True)
1521                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
1522                 self._sortByValueAction.setText("Sort By Value")
1523                 self._sortByValueAction.setStatusTip("Sort the units by value")
1524                 self._sortByValueAction.setToolTip("Sort the units by value")
1525                 self._sortByValueAction.setCheckable(True)
1526                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
1527                 self._sortByUnitAction.setText("Sort By Unit")
1528                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
1529                 self._sortByUnitAction.setToolTip("Sort the units by unit")
1530                 self._sortByUnitAction.setCheckable(True)
1531
1532                 if UnitData.NAME_COLUMN != 0:
1533                         # By default it sorts by he first column (name)
1534                         self._unitsModel.sort(UnitData.NAME_COLUMN)
1535                 self._sortByNameAction.setChecked(True)
1536
1537                 self._chooseFavoritesAction = QtGui.QAction(None)
1538                 self._chooseFavoritesAction.setText("Select Favorites")
1539                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
1540                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
1541
1542                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
1543
1544                 self._previousUnitAction = QtGui.QAction(None)
1545                 self._previousUnitAction.setText("Previous Unit")
1546                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
1547                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
1548
1549                 self._nextUnitAction = QtGui.QAction(None)
1550                 self._nextUnitAction.setText("Next Unit")
1551                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1552                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1553
1554                 self._closeWindowAction = QtGui.QAction(None)
1555                 self._closeWindowAction.setText("Close Window")
1556                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1557                 self._closeWindowAction.triggered.connect(self._on_close_window)
1558
1559                 if IS_MAEMO:
1560                         self._window.addAction(self._closeWindowAction)
1561                         self._window.addAction(self._app.quitAction)
1562                         self._window.addAction(self._app.fullscreenAction)
1563
1564                         fileMenu = self._window.menuBar().addMenu("&Units")
1565                         fileMenu.addAction(self._chooseFavoritesAction)
1566
1567                         viewMenu = self._window.menuBar().addMenu("&View")
1568                         viewMenu.addAction(self._app.showFavoritesAction)
1569                         viewMenu.addAction(self._app.condensedAction)
1570                         viewMenu.addSeparator()
1571                         viewMenu.addAction(self._sortByNameAction)
1572                         viewMenu.addAction(self._sortByValueAction)
1573                         viewMenu.addAction(self._sortByUnitAction)
1574                         viewMenu.addSeparator()
1575                         viewMenu.addAction(self._app.jumpAction)
1576                         viewMenu.addAction(self._app.recentAction)
1577                 else:
1578                         fileMenu = self._window.menuBar().addMenu("&Units")
1579                         fileMenu.addAction(self._chooseFavoritesAction)
1580                         fileMenu.addAction(self._closeWindowAction)
1581                         fileMenu.addAction(self._app.quitAction)
1582
1583                         viewMenu = self._window.menuBar().addMenu("&View")
1584                         viewMenu.addAction(self._app.showFavoritesAction)
1585                         viewMenu.addAction(self._app.condensedAction)
1586                         viewMenu.addSeparator()
1587                         viewMenu.addAction(self._sortByNameAction)
1588                         viewMenu.addAction(self._sortByValueAction)
1589                         viewMenu.addAction(self._sortByUnitAction)
1590                         viewMenu.addSeparator()
1591                         viewMenu.addAction(self._app.jumpAction)
1592                         viewMenu.addAction(self._app.recentAction)
1593                         viewMenu.addSeparator()
1594                         viewMenu.addAction(self._app.fullscreenAction)
1595
1596                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1597                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1598                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1599
1600                 self._window.addAction(self._app.logAction)
1601                 self._window.addAction(self._nextUnitAction)
1602                 self._window.addAction(self._previousUnitAction)
1603                 self._window.addAction(self._chooseFavoritesAction)
1604
1605                 self._update_favorites()
1606                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1607                 self._window.show()
1608
1609         @property
1610         def window(self):
1611                 return self._window
1612
1613         def show(self):
1614                 for child in self.walk_children():
1615                         child.hide()
1616                 self._window.show()
1617
1618         def hide(self):
1619                 for child in self.walk_children():
1620                         child.hide()
1621                 self._window.hide()
1622
1623         def close(self):
1624                 for child in self.walk_children():
1625                         child.window.destroyed.disconnect(self._on_child_close)
1626                         child.close()
1627                 self._window.close()
1628
1629         def set_fullscreen(self, isFullscreen):
1630                 if isFullscreen:
1631                         self._window.showFullScreen()
1632                 else:
1633                         self._window.showNormal()
1634
1635         def select_unit(self, unitName):
1636                 index = self._unitsModel.index_unit(unitName)
1637                 self._select_unit(index)
1638
1639         def walk_children(self):
1640                 if self._favoritesWindow is not None:
1641                         yield self._favoritesWindow
1642
1643         def _update_favorites(self, force = False):
1644                 if self._app.showFavoritesAction.isChecked():
1645                         unitNames = list(self._unitsModel.get_unit_names())
1646                         for i, unitName in enumerate(unitNames):
1647                                 if unitName in self._app.get_hidden_units(self._categoryName):
1648                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1649                                 else:
1650                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1651                 else:
1652                         if force:
1653                                 for i in xrange(len(self._unitsModel)):
1654                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1655
1656         @misc_utils.log_exception(_moduleLogger)
1657         def _on_show_favorites(self, checked = True):
1658                 if checked:
1659                         unitNames = list(self._unitsModel.get_unit_names())
1660                         for i, unitName in enumerate(unitNames):
1661                                 if unitName in self._app.get_hidden_units(self._categoryName):
1662                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1663                 else:
1664                         for i in xrange(len(self._unitsModel)):
1665                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1666
1667         @misc_utils.log_exception(_moduleLogger)
1668         def _on_choose_favorites(self, obj = None):
1669                 assert self._favoritesWindow is None
1670                 self._favoritesWindow = FavoritesWindow(
1671                         self._window,
1672                         self._app,
1673                         unit_data.get_units(self._categoryName),
1674                         self._app.get_hidden_units(self._categoryName)
1675                 )
1676                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1677                 return self._favoritesWindow
1678
1679         @misc_utils.log_exception(_moduleLogger)
1680         def _on_close_favorites(self, obj = None):
1681                 self._favoritesWindow = None
1682                 self._update_favorites(force=True)
1683
1684         @misc_utils.log_exception(_moduleLogger)
1685         def _on_previous_unit(self, checked = True):
1686                 self._select_unit(self._selectedIndex - 1)
1687
1688         @misc_utils.log_exception(_moduleLogger)
1689         def _on_next_unit(self, checked = True):
1690                 self._select_unit(self._selectedIndex + 1)
1691
1692         @misc_utils.log_exception(_moduleLogger)
1693         def _on_close_window(self, checked = True):
1694                 self.close()
1695
1696         @misc_utils.log_exception(_moduleLogger)
1697         def _on_sort_by_name(self, checked = False):
1698                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1699
1700         @misc_utils.log_exception(_moduleLogger)
1701         def _on_sort_by_value(self, checked = False):
1702                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1703
1704         @misc_utils.log_exception(_moduleLogger)
1705         def _on_sort_by_unit(self, checked = False):
1706                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1707
1708         @misc_utils.log_exception(_moduleLogger)
1709         def _on_unit_clicked(self, index):
1710                 self._select_unit(index.row())
1711
1712         @misc_utils.log_exception(_moduleLogger)
1713         def _on_value_edited(self, *args):
1714                 userInput = self._selectedUnitValue.text()
1715                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1716                 self._update_favorites()
1717
1718         def _select_unit(self, index):
1719                 unit = self._unitsModel.get_unit(index)
1720                 self._selectedUnitName.setText(unit.name)
1721                 self._selectedUnitValue.setText(str(unit.value))
1722                 self._selectedUnitSymbol.setText(unit.unit)
1723
1724                 self._selectedIndex = index
1725                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1726                 self._unitsView.scrollTo(qindex)
1727                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1728
1729
1730 def run_gonvert():
1731         app = QtGui.QApplication([])
1732         handle = Gonvert(app)
1733         return app.exec_()
1734
1735
1736 if __name__ == "__main__":
1737         logging.basicConfig(level = logging.DEBUG)
1738         try:
1739                 os.makedirs(constants._data_path_)
1740         except OSError, e:
1741                 if e.errno != 17:
1742                         raise
1743
1744         val = run_gonvert()
1745         sys.exit(val)