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 from util import misc as misc_utils
  17 import unit_data
  18
  19
  20 _moduleLogger = logging.getLogger("gonvert_glade")
  21
  22
  23 def change_menu_label(widgets, labelname, newtext):
  24         item_label = widgets.get_widget(labelname).get_children()[0]
  25         item_label.set_text(newtext)
  26
  27
  28 def split_number(number):
  29         try:
  30                 fractional, integer = math.modf(number)
  31         except TypeError:
  32                 integerDisplay = number
  33                 fractionalDisplay = ""
  34         else:
  35                 integerDisplay = str(integer)
  36                 fractionalDisplay = str(fractional)
  37                 if "e+" in integerDisplay:
  38                         integerDisplay = number
  39                         fractionalDisplay = ""
  40                 elif "e-" in fractionalDisplay and 0.0 < integer:
  41                         integerDisplay = number
  42                         fractionalDisplay = ""
  43                 elif "e-" in fractionalDisplay:
  44                         integerDisplay = ""
  45                         fractionalDisplay = number
  46                 else:
  47                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  48                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  49
  50         return integerDisplay, fractionalDisplay
  51
  52
  53 class Gonvert(object):
  54
  55         _DATA_PATHS = [
  56                 os.path.dirname(__file__),
  57                 os.path.join(os.path.dirname(__file__), "../data"),
  58                 os.path.join(os.path.dirname(__file__), "../lib"),
  59                 '/usr/share/gonvert',
  60                 '/usr/lib/gonvert',
  61         ]
  62
  63         def __init__(self, app):
  64                 self._dataPath = ""
  65                 for dataPath in self._DATA_PATHS:
  66                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  67                         if os.path.isfile(appIconPath):
  68                                 self._dataPath = dataPath
  69                                 break
  70                 else:
  71                         raise RuntimeError("UI Descriptor not found!")
  72                 self._app = app
  73                 self._appIconPath = appIconPath
  74                 self._recent = []
  75                 self._hiddenCategories = set()
  76                 self._hiddenUnits = {}
  77                 self._clipboard = QtGui.QApplication.clipboard()
  78
  79                 self._jumpWindow = None
  80                 self._recentWindow = None
  81                 self._catWindow = None
  82
  83                 self._jumpAction = QtGui.QAction(None)
  84                 self._jumpAction.setText("Quick Jump")
  85                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  86                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  87                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  88                 self._jumpAction.triggered.connect(self._on_jump_start)
  89
  90                 self._recentAction = QtGui.QAction(None)
  91                 self._recentAction.setText("Recent Units")
  92                 self._recentAction.setStatusTip("View the recent units")
  93                 self._recentAction.setToolTip("View the recent units")
  94                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
  95                 self._recentAction.triggered.connect(self._on_recent_start)
  96
  97                 self._fullscreenAction = QtGui.QAction(None)
  98                 self._fullscreenAction.setText("Fullscreen")
  99                 self._fullscreenAction.setCheckable(True)
 100                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 101                 self._fullscreenAction.toggled.connect(self._on_toggle_fullscreen)
 102
 103                 self._showFavoritesAction = QtGui.QAction(None)
 104                 self._showFavoritesAction.setCheckable(True)
 105                 self._showFavoritesAction.setText("Favorites Only")
 106
 107                 self._logAction = QtGui.QAction(None)
 108                 self._logAction.setText("Log")
 109                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 110                 self._logAction.triggered.connect(self._on_log)
 111
 112                 self._quitAction = QtGui.QAction(None)
 113                 self._quitAction.setText("Quit")
 114                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 115                 self._quitAction.triggered.connect(self._on_quit)
 116
 117                 self._app.lastWindowClosed.connect(self._on_app_quit)
 118                 self.request_category()
 119                 self.load_settings()
 120
 121         def request_category(self):
 122                 if self._catWindow is not None:
 123                         self._catWindow.close()
 124                         self._catWindow = None
 125                 self._catWindow = CategoryWindow(None, self)
 126                 self._catWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_catWindow", obj))
 127                 return self._catWindow
 128
 129         def search_units(self):
 130                 if self._jumpWindow is not None:
 131                         self._jumpWindow.close()
 132                         self._jumpWindow = None
 133                 self._jumpWindow = QuickJump(None, self)
 134                 self._jumpWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_jumpWindow", obj))
 135                 return self._jumpWindow
 136
 137         def show_recent(self):
 138                 if self._recentWindow is not None:
 139                         self._recentWindow.close()
 140                         self._recentWindow = None
 141                 self._recentWindow = Recent(None, self)
 142                 self._recentWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_recentWindow", obj))
 143                 return self._recentWindow
 144
 145         def add_recent(self, categoryName, unitName):
 146                 catUnit = categoryName, unitName
 147                 try:
 148                         self._recent.remove(catUnit)
 149                 except ValueError:
 150                         pass # ignore if its not already in the recent history
 151                 assert catUnit not in self._recent
 152                 self._recent.append(catUnit)
 153
 154         def get_recent_unit(self, categoryName):
 155                 for catName, unitName in reversed(self._recent):
 156                         if catName == categoryName:
 157                                 return unitName
 158                 else:
 159                         return ""
 160
 161         def get_recent(self):
 162                 return reversed(self._recent)
 163
 164         @property
 165         def hiddenCategories(self):
 166                 return self._hiddenCategories
 167
 168         def get_hidden_units(self, categoryName):
 169                 try:
 170                         return self._hiddenUnits[categoryName]
 171                 except KeyError:
 172                         self._hiddenUnits[categoryName] = set()
 173                         return self._hiddenUnits[categoryName]
 174
 175         def load_settings(self):
 176                 try:
 177                         with open(constants._user_settings_, "r") as settingsFile:
 178                                 settings = simplejson.load(settingsFile)
 179                 except IOError, e:
 180                         _moduleLogger.info("No settings")
 181                         settings = {}
 182                 except ValueError:
 183                         _moduleLogger.info("Settings were corrupt")
 184                         settings = {}
 185
 186                 self._fullscreenAction.setChecked(settings.get("isFullScreen", False))
 187
 188                 recent = settings.get("recent", self._recent)
 189                 for category, unit in recent:
 190                         self.add_recent(category, unit)
 191
 192                 self._hiddenCategories = set(settings.get("hiddenCategories", set()))
 193                 self._hiddenUnits = dict(
 194                         (catName, set(units))
 195                         for (catName, units) in settings.get("hiddenUnits", {}).iteritems()
 196                 )
 197
 198                 self._showFavoritesAction.setChecked(settings.get("showFavorites", True))
 199
 200                 if self._recent:
 201                         self._catWindow.select_category(self._recent[-1][0])
 202
 203         def save_settings(self):
 204                 settings = {
 205                         "isFullScreen": self._fullscreenAction.isChecked(),
 206                         "recent": self._recent,
 207                         "hiddenCategories": list(self._hiddenCategories),
 208                         "hiddenUnits": dict(
 209                                 (catName, list(units))
 210                                 for (catName, units) in self._hiddenUnits.iteritems()
 211                         ),
 212                         "showFavorites": self._showFavoritesAction.isChecked(),
 213                 }
 214                 with open(constants._user_settings_, "w") as settingsFile:
 215                         simplejson.dump(settings, settingsFile)
 216
 217         @property
 218         def appIconPath(self):
 219                 return self._appIconPath
 220
 221         @property
 222         def jumpAction(self):
 223                 return self._jumpAction
 224
 225         @property
 226         def recentAction(self):
 227                 return self._recentAction
 228
 229         @property
 230         def fullscreenAction(self):
 231                 return self._fullscreenAction
 232
 233         @property
 234         def logAction(self):
 235                 return self._logAction
 236
 237         @property
 238         def quitAction(self):
 239                 return self._quitAction
 240
 241         @property
 242         def showFavoritesAction(self):
 243                 return self._showFavoritesAction
 244
 245         def _walk_children(self):
 246                 if self._catWindow is not None:
 247                         yield self._catWindow
 248                 if self._jumpWindow is not None:
 249                         yield self._jumpWindow
 250                 if self._recentWindow is not None:
 251                         yield self._recentWindow
 252
 253         @misc_utils.log_exception(_moduleLogger)
 254         def _on_app_quit(self, checked = False):
 255                 self.save_settings()
 256
 257         @misc_utils.log_exception(_moduleLogger)
 258         def _on_child_close(self, name, obj = None):
 259                 if not hasattr(self, name):
 260                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 261                         return
 262                 setattr(self, name, None)
 263
 264         @misc_utils.log_exception(_moduleLogger)
 265         def _on_toggle_fullscreen(self, checked = False):
 266                 for window in self._walk_children():
 267                         window.set_fullscreen(checked)
 268
 269         @misc_utils.log_exception(_moduleLogger)
 270         def _on_jump_start(self, checked = False):
 271                 self.search_units()
 272
 273         @misc_utils.log_exception(_moduleLogger)
 274         def _on_recent_start(self, checked = False):
 275                 self.show_recent()
 276
 277         @misc_utils.log_exception(_moduleLogger)
 278         def _on_log(self, checked = False):
 279                 with open(constants._user_logpath_, "r") as f:
 280                         logLines = f.xreadlines()
 281                         log = "".join(logLines)
 282                         self._clipboard.setText(log)
 283
 284         @misc_utils.log_exception(_moduleLogger)
 285         def _on_quit(self, checked = False):
 286                 for window in self._walk_children():
 287                         window.close()
 288
 289
 290 class QuickJump(object):
 291
 292         MINIMAL_ENTRY = 3
 293
 294         def __init__(self, parent, app):
 295                 self._app = app
 296
 297                 self._searchLabel = QtGui.QLabel("Search:")
 298                 self._searchEntry = QtGui.QLineEdit("")
 299                 self._searchEntry.textEdited.connect(self._on_search_edited)
 300
 301                 self._entryLayout = QtGui.QHBoxLayout()
 302                 self._entryLayout.addWidget(self._searchLabel)
 303                 self._entryLayout.addWidget(self._searchEntry)
 304
 305                 self._resultsBox = QtGui.QTreeWidget()
 306                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 307                 self._resultsBox.setHeaderHidden(True)
 308                 self._resultsBox.setAlternatingRowColors(True)
 309                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 310
 311                 self._layout = QtGui.QVBoxLayout()
 312                 self._layout.addLayout(self._entryLayout)
 313                 self._layout.addWidget(self._resultsBox)
 314
 315                 centralWidget = QtGui.QWidget()
 316                 centralWidget.setLayout(self._layout)
 317
 318                 self._window = QtGui.QMainWindow(parent)
 319                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 320                 if parent is not None:
 321                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 322                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 323                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 324                 self._window.setCentralWidget(centralWidget)
 325
 326                 self._closeWindowAction = QtGui.QAction(None)
 327                 self._closeWindowAction.setText("Window")
 328                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 329                 self._closeWindowAction.triggered.connect(self._on_close_window)
 330
 331                 fileMenu = self._window.menuBar().addMenu("&Units")
 332                 fileMenu.addAction(self._closeWindowAction)
 333                 fileMenu.addAction(self._app.quitAction)
 334
 335                 viewMenu = self._window.menuBar().addMenu("&View")
 336                 viewMenu.addAction(self._app.fullscreenAction)
 337
 338                 self._window.addAction(self._app.logAction)
 339
 340                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 341                 self._window.show()
 342
 343         @property
 344         def window(self):
 345                 return self._window
 346
 347         def close(self):
 348                 self._window.close()
 349
 350         def set_fullscreen(self, isFullscreen):
 351                 if isFullscreen:
 352                         self._window.showFullScreen()
 353                 else:
 354                         self._window.showNormal()
 355
 356         @misc_utils.log_exception(_moduleLogger)
 357         def _on_close_window(self, checked = True):
 358                 self.close()
 359
 360         @misc_utils.log_exception(_moduleLogger)
 361         def _on_result_clicked(self, item, columnIndex):
 362                 categoryName = unicode(item.text(0))
 363                 unitName = unicode(item.text(1))
 364                 catWindow = self._app.request_category()
 365                 unitsWindow = catWindow.select_category(categoryName)
 366                 unitsWindow.select_unit(unitName)
 367                 self.close()
 368
 369         @misc_utils.log_exception(_moduleLogger)
 370         def _on_search_edited(self, *args):
 371                 userInput = self._searchEntry.text()
 372                 if len(userInput) <  self.MINIMAL_ENTRY:
 373                         return
 374
 375                 self._resultsBox.clear()
 376                 lowerInput = str(userInput).lower()
 377                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 378                         units = unit_data.get_units(category)
 379                         for unitIndex, unit in enumerate(units):
 380                                 loweredUnit = unit.lower()
 381                                 if lowerInput in loweredUnit:
 382                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 383                                         twi.setText(0, category)
 384                                         twi.setText(1, unit)
 385
 386
 387 class Recent(object):
 388
 389         def __init__(self, parent, app):
 390                 self._app = app
 391
 392                 self._resultsBox = QtGui.QTreeWidget()
 393                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 394                 self._resultsBox.setHeaderHidden(True)
 395                 self._resultsBox.setAlternatingRowColors(True)
 396                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 397
 398                 self._layout = QtGui.QVBoxLayout()
 399                 self._layout.addWidget(self._resultsBox)
 400
 401                 centralWidget = QtGui.QWidget()
 402                 centralWidget.setLayout(self._layout)
 403
 404                 self._window = QtGui.QMainWindow(parent)
 405                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 406                 if parent is not None:
 407                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 408                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 409                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 410                 self._window.setCentralWidget(centralWidget)
 411
 412                 for cat, unit in self._app.get_recent():
 413                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 414                         twi.setText(0, cat)
 415                         twi.setText(1, unit)
 416
 417                 self._closeWindowAction = QtGui.QAction(None)
 418                 self._closeWindowAction.setText("Window")
 419                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 420                 self._closeWindowAction.triggered.connect(self._on_close_window)
 421
 422                 fileMenu = self._window.menuBar().addMenu("&Units")
 423                 fileMenu.addAction(self._closeWindowAction)
 424                 fileMenu.addAction(self._app.quitAction)
 425
 426                 viewMenu = self._window.menuBar().addMenu("&View")
 427                 viewMenu.addAction(self._app.fullscreenAction)
 428
 429                 self._window.addAction(self._app.logAction)
 430
 431                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 432                 self._window.show()
 433
 434         @property
 435         def window(self):
 436                 return self._window
 437
 438         def close(self):
 439                 self._window.close()
 440
 441         def set_fullscreen(self, isFullscreen):
 442                 if isFullscreen:
 443                         self._window.showFullScreen()
 444                 else:
 445                         self._window.showNormal()
 446
 447         @misc_utils.log_exception(_moduleLogger)
 448         def _on_close_window(self, checked = True):
 449                 self.close()
 450
 451         @misc_utils.log_exception(_moduleLogger)
 452         def _on_result_clicked(self, item, columnIndex):
 453                 categoryName = unicode(item.text(0))
 454                 unitName = unicode(item.text(1))
 455                 catWindow = self._app.request_category()
 456                 unitsWindow = catWindow.select_category(categoryName)
 457                 unitsWindow.select_unit(unitName)
 458                 self.close()
 459
 460
 461 class FavoriteCategoriesWindow(object):
 462
 463         def __init__(self, parent, app, source, hidden):
 464                 self._app = app
 465                 self._source = list(source)
 466                 self._hidden = hidden
 467
 468                 self._categories = QtGui.QTreeWidget()
 469                 self._categories.setHeaderLabels(["Categories"])
 470                 self._categories.setHeaderHidden(True)
 471                 self._categories.setAlternatingRowColors(True)
 472                 self._categories.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
 473                 self._categories.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
 474                 self._childWidgets = []
 475                 for catName in self._source:
 476                         twi = QtGui.QTreeWidgetItem(self._categories)
 477                         twi.setText(0, catName)
 478                         self._childWidgets.append(twi)
 479                         if catName not in self._hidden:
 480                                 self._categories.setItemSelected(twi, True)
 481                 self._selection = self._categories.selectionModel()
 482                 self._selection.selectionChanged.connect(self._on_selection_changed)
 483
 484                 self._allButton = QtGui.QPushButton("All")
 485                 self._allButton.clicked.connect(self._on_select_all)
 486                 self._invertButton = QtGui.QPushButton("Invert")
 487                 self._invertButton.clicked.connect(self._on_invert_selection)
 488                 self._noneButton = QtGui.QPushButton("None")
 489                 self._noneButton.clicked.connect(self._on_select_none)
 490
 491                 self._buttonLayout = QtGui.QHBoxLayout()
 492                 self._buttonLayout.addWidget(self._allButton)
 493                 self._buttonLayout.addWidget(self._invertButton)
 494                 self._buttonLayout.addWidget(self._noneButton)
 495
 496                 self._layout = QtGui.QVBoxLayout()
 497                 self._layout.addWidget(self._categories)
 498                 self._layout.addLayout(self._buttonLayout)
 499
 500                 centralWidget = QtGui.QWidget()
 501                 centralWidget.setLayout(self._layout)
 502
 503                 self._window = QtGui.QMainWindow(parent)
 504                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 505                 if parent is not None:
 506                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 507                 self._window.setWindowTitle("%s - Favorites" % constants.__pretty_app_name__)
 508                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 509                 self._window.setCentralWidget(centralWidget)
 510
 511                 self._closeWindowAction = QtGui.QAction(None)
 512                 self._closeWindowAction.setText("Window")
 513                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 514                 self._closeWindowAction.triggered.connect(self._on_close_window)
 515
 516                 fileMenu = self._window.menuBar().addMenu("&Units")
 517                 fileMenu.addAction(self._closeWindowAction)
 518                 fileMenu.addAction(self._app.quitAction)
 519
 520                 viewMenu = self._window.menuBar().addMenu("&View")
 521                 viewMenu.addAction(self._app.fullscreenAction)
 522
 523                 self._window.addAction(self._app.logAction)
 524
 525                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 526                 self._window.show()
 527
 528         @property
 529         def window(self):
 530                 return self._window
 531
 532         def close(self):
 533                 self._window.close()
 534
 535         def set_fullscreen(self, isFullscreen):
 536                 if isFullscreen:
 537                         self._window.showFullScreen()
 538                 else:
 539                         self._window.showNormal()
 540
 541         @misc_utils.log_exception(_moduleLogger)
 542         def _on_select_all(self, checked = False):
 543                 for child in self._childWidgets:
 544                         self._categories.setItemSelected(child, True)
 545
 546         @misc_utils.log_exception(_moduleLogger)
 547         def _on_invert_selection(self, checked = False):
 548                 for child in self._childWidgets:
 549                         isSelected = self._categories.isItemSelected(child)
 550                         self._categories.setItemSelected(child, not isSelected)
 551
 552         @misc_utils.log_exception(_moduleLogger)
 553         def _on_select_none(self, checked = False):
 554                 for child in self._childWidgets:
 555                         self._categories.setItemSelected(child, False)
 556
 557         @misc_utils.log_exception(_moduleLogger)
 558         def _on_selection_changed(self, selected, deselected):
 559                 self._hidden.clear()
 560                 selectedNames = set(
 561                         str(item.text(0))
 562                         for item in self._categories.selectedItems()
 563                 )
 564                 for name in self._source:
 565                         if name not in selectedNames:
 566                                 self._hidden.add(name)
 567
 568         @misc_utils.log_exception(_moduleLogger)
 569         def _on_close_window(self, checked = True):
 570                 self.close()
 571
 572
 573 class CategoryWindow(object):
 574
 575         def __init__(self, parent, app):
 576                 self._app = app
 577                 self._unitWindow = None
 578                 self._favoritesWindow = None
 579
 580                 self._categories = QtGui.QTreeWidget()
 581                 self._categories.setHeaderLabels(["Categories"])
 582                 self._categories.itemClicked.connect(self._on_category_clicked)
 583                 self._categories.setHeaderHidden(True)
 584                 self._categories.setAlternatingRowColors(True)
 585                 for catName in unit_data.UNIT_CATEGORIES:
 586                         twi = QtGui.QTreeWidgetItem(self._categories)
 587                         twi.setText(0, catName)
 588
 589                 self._layout = QtGui.QVBoxLayout()
 590                 self._layout.addWidget(self._categories)
 591
 592                 centralWidget = QtGui.QWidget()
 593                 centralWidget.setLayout(self._layout)
 594
 595                 self._window = QtGui.QMainWindow(parent)
 596                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 597                 if parent is not None:
 598                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 599                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 600                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 601                 self._window.setCentralWidget(centralWidget)
 602
 603                 self._chooseFavoritesAction = QtGui.QAction(None)
 604                 self._chooseFavoritesAction.setText("Select Favorites")
 605                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
 606                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
 607
 608                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 609
 610                 self._closeWindowAction = QtGui.QAction(None)
 611                 self._closeWindowAction.setText("Window")
 612                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 613                 self._closeWindowAction.triggered.connect(self._on_close_window)
 614
 615                 fileMenu = self._window.menuBar().addMenu("&Units")
 616                 fileMenu.addAction(self._chooseFavoritesAction)
 617                 fileMenu.addAction(self._closeWindowAction)
 618                 fileMenu.addAction(self._app.quitAction)
 619
 620                 viewMenu = self._window.menuBar().addMenu("&View")
 621                 viewMenu.addAction(self._app.showFavoritesAction)
 622                 viewMenu.addSeparator()
 623                 viewMenu.addAction(self._app.jumpAction)
 624                 viewMenu.addAction(self._app.recentAction)
 625                 viewMenu.addSeparator()
 626                 viewMenu.addAction(self._app.fullscreenAction)
 627
 628                 self._window.addAction(self._app.logAction)
 629
 630                 self._update_favorites()
 631                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
 632                 self._window.show()
 633
 634         @property
 635         def window(self):
 636                 return self._window
 637
 638         def walk_children(self):
 639                 if self._unitWindow is not None:
 640                         yield self._unitWindow
 641                 if self._favoritesWindow is not None:
 642                         yield self._favoritesWindow
 643
 644         def close(self):
 645                 for child in self.walk_children():
 646                         child.close()
 647                 self._window.close()
 648
 649         def select_category(self, categoryName):
 650                 for child in self.walk_children():
 651                         child.close()
 652                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 653                 self._unitWindow.window.destroyed.connect(self._on_child_close)
 654                 # @todo Add scroll to category
 655                 return self._unitWindow
 656
 657         def set_fullscreen(self, isFullscreen):
 658                 if isFullscreen:
 659                         self._window.showFullScreen()
 660                 else:
 661                         self._window.showNormal()
 662                 for child in self.walk_children():
 663                         child.set_fullscreen(isFullscreen)
 664
 665         def _update_favorites(self):
 666                 if self._app.showFavoritesAction.isChecked():
 667                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 668                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 669                                 if catName in self._app.hiddenCategories:
 670                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 671                                 else:
 672                                         self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 673                 else:
 674                         for i in xrange(self._categories.topLevelItemCount()):
 675                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 676
 677         @misc_utils.log_exception(_moduleLogger)
 678         def _on_choose_favorites(self, obj = None):
 679                 assert self._favoritesWindow is None
 680                 self._favoritesWindow = FavoriteCategoriesWindow(
 681                         self._window,
 682                         self._app,
 683                         unit_data.UNIT_CATEGORIES,
 684                         self._app.hiddenCategories
 685                 )
 686                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
 687                 return self._favoritesWindow
 688
 689         @misc_utils.log_exception(_moduleLogger)
 690         def _on_show_favorites(self, checked = True):
 691                 if checked:
 692                         assert self._categories.topLevelItemCount() == len(unit_data.UNIT_CATEGORIES)
 693                         for i, catName in enumerate(unit_data.UNIT_CATEGORIES):
 694                                 if catName in self._app.hiddenCategories:
 695                                         self._categories.setRowHidden(i, self._categories.rootIndex(), True)
 696                 else:
 697                         for i in xrange(self._categories.topLevelItemCount()):
 698                                 self._categories.setRowHidden(i, self._categories.rootIndex(), False)
 699
 700         @misc_utils.log_exception(_moduleLogger)
 701         def _on_close_favorites(self, obj = None):
 702                 self._favoritesWindow = None
 703                 self._update_favorites()
 704
 705         @misc_utils.log_exception(_moduleLogger)
 706         def _on_child_close(self, obj = None):
 707                 self._unitWindow = None
 708
 709         @misc_utils.log_exception(_moduleLogger)
 710         def _on_close_window(self, checked = True):
 711                 self.close()
 712
 713         @misc_utils.log_exception(_moduleLogger)
 714         def _on_category_clicked(self, item, columnIndex):
 715                 categoryName = unicode(item.text(0))
 716                 self.select_category(categoryName)
 717
 718
 719 class UnitData(object):
 720
 721         HEADERS = ["Name", "Value", "", "Unit"]
 722         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
 723         NAME_COLUMN = 0
 724         VALUE_COLUMN_0 = 1
 725         VALUE_COLUMN_1 = 2
 726         UNIT_COLUMN = 3
 727
 728         def __init__(self, name, unit, description, conversion):
 729                 self._name = name
 730                 self._unit = unit
 731                 self._description = description
 732                 self._conversion = conversion
 733
 734                 self._value = 0.0
 735                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
 736
 737         @property
 738         def name(self):
 739                 return self._name
 740
 741         @property
 742         def value(self):
 743                 return self._value
 744
 745         def update_value(self, newValue):
 746                 self._value = newValue
 747                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
 748
 749         @property
 750         def unit(self):
 751                 return self._unit
 752
 753         @property
 754         def conversion(self):
 755                 return self._conversion
 756
 757         def data(self, column):
 758                 try:
 759                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
 760                 except IndexError:
 761                         return None
 762
 763
 764 class UnitModel(QtCore.QAbstractItemModel):
 765
 766         def __init__(self, categoryName, parent=None):
 767                 super(UnitModel, self).__init__(parent)
 768                 self._categoryName = categoryName
 769                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 770
 771                 self._children = []
 772                 for key in unit_data.get_units(self._categoryName):
 773                         conversion, unit, description = self._unitData[key]
 774                         self._children.append(UnitData(key, unit, description, conversion))
 775                 self._sortSettings = None
 776
 777         @misc_utils.log_exception(_moduleLogger)
 778         def columnCount(self, parent):
 779                 if parent.isValid():
 780                         return 0
 781                 else:
 782                         return len(UnitData.HEADERS)
 783
 784         @misc_utils.log_exception(_moduleLogger)
 785         def data(self, index, role):
 786                 if not index.isValid():
 787                         return None
 788                 elif role == QtCore.Qt.TextAlignmentRole:
 789                         return UnitData.ALIGNMENT[index.column()]
 790                 elif role != QtCore.Qt.DisplayRole:
 791                         return None
 792
 793                 item = index.internalPointer()
 794                 if isinstance(item, UnitData):
 795                         return item.data(index.column())
 796                 elif item is UnitData.HEADERS:
 797                         return item[index.column()]
 798
 799         @misc_utils.log_exception(_moduleLogger)
 800         def sort(self, column, order = QtCore.Qt.AscendingOrder):
 801                 self._sortSettings = column, order
 802                 isReverse = order == QtCore.Qt.AscendingOrder
 803                 if column == UnitData.NAME_COLUMN:
 804                         key_func = lambda item: item.name
 805                 elif column in [UnitData.VALUE_COLUMN_0, UnitData.VALUE_COLUMN_1]:
 806                         key_func = lambda item: item.value
 807                 elif column == UnitData.UNIT_COLUMN:
 808                         key_func = lambda item: item.unit
 809                 self._children.sort(key=key_func, reverse = isReverse)
 810
 811                 self._all_changed()
 812
 813         @misc_utils.log_exception(_moduleLogger)
 814         def flags(self, index):
 815                 if not index.isValid():
 816                         return QtCore.Qt.NoItemFlags
 817
 818                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
 819
 820         @misc_utils.log_exception(_moduleLogger)
 821         def headerData(self, section, orientation, role):
 822                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
 823                         return UnitData.HEADERS[section]
 824
 825                 return None
 826
 827         @misc_utils.log_exception(_moduleLogger)
 828         def index(self, row, column, parent):
 829                 if not self.hasIndex(row, column, parent):
 830                         return QtCore.QModelIndex()
 831
 832                 if parent.isValid():
 833                         return QtCore.QModelIndex()
 834
 835                 parentItem = UnitData.HEADERS
 836                 childItem = self._children[row]
 837                 if childItem:
 838                         return self.createIndex(row, column, childItem)
 839                 else:
 840                         return QtCore.QModelIndex()
 841
 842         @misc_utils.log_exception(_moduleLogger)
 843         def parent(self, index):
 844                 if not index.isValid():
 845                         return QtCore.QModelIndex()
 846
 847                 childItem = index.internalPointer()
 848                 if isinstance(childItem, UnitData):
 849                         return QtCore.QModelIndex()
 850                 elif childItem is UnitData.HEADERS:
 851                         return None
 852
 853         @misc_utils.log_exception(_moduleLogger)
 854         def rowCount(self, parent):
 855                 if 0 < parent.column():
 856                         return 0
 857
 858                 if not parent.isValid():
 859                         return len(self._children)
 860                 else:
 861                         return len(self._children)
 862
 863         def get_unit(self, index):
 864                 assert 0 <= index
 865                 return self._children[index]
 866
 867         def get_unit_names(self):
 868                 for child in self._children:
 869                         yield child.name
 870
 871         def index_unit(self, unitName):
 872                 for i, child in enumerate(self._children):
 873                         if child.name == unitName:
 874                                 return i
 875                 else:
 876                         raise RuntimeError("Unit not found")
 877
 878         def update_values(self, fromIndex, userInput):
 879                 value = self._sanitize_value(userInput)
 880                 func, arg = self._children[fromIndex].conversion
 881                 base = func.to_base(value, arg)
 882                 for i, child in enumerate(self._children):
 883                         if i == fromIndex:
 884                                 continue
 885                         func, arg = child.conversion
 886                         newValue = func.from_base(base, arg)
 887                         child.update_value(newValue)
 888
 889                 if self._sortSettings is not None:
 890                         self.sort(*self._sortSettings)
 891                 self._all_changed()
 892
 893         def __len__(self):
 894                 return len(self._children)
 895
 896         def _all_changed(self):
 897                 topLeft = self.createIndex(0, 0, self._children[0])
 898                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
 899                 self.dataChanged.emit(topLeft, bottomRight)
 900
 901         def _sanitize_value(self, userEntry):
 902                 if self._categoryName == "Computer Numbers":
 903                         if userEntry == '':
 904                                 value = '0'
 905                         else:
 906                                 value = userEntry
 907                 else:
 908                         if userEntry == '':
 909                                 value = 0.0
 910                         else:
 911                                 value = float(userEntry)
 912                 return value
 913
 914
 915 class UnitWindow(object):
 916
 917         def __init__(self, parent, category, app):
 918                 self._app = app
 919                 self._categoryName = category
 920                 self._selectedIndex = 0
 921                 self._favoritesWindow = None
 922
 923                 self._selectedUnitName = QtGui.QLabel()
 924                 self._selectedUnitValue = QtGui.QLineEdit()
 925                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
 926                 self._selectedUnitSymbol = QtGui.QLabel()
 927
 928                 self._selectedUnitLayout = QtGui.QHBoxLayout()
 929                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
 930                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
 931                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
 932
 933                 self._unitsModel = UnitModel(self._categoryName)
 934                 self._unitsView = QtGui.QTreeView()
 935                 self._unitsView.setModel(self._unitsModel)
 936                 self._unitsView.clicked.connect(self._on_unit_clicked)
 937                 self._unitsView.setUniformRowHeights(True)
 938                 self._unitsView.header().setSortIndicatorShown(True)
 939                 self._unitsView.header().setClickable(True)
 940                 self._unitsView.setSortingEnabled(True)
 941                 self._unitsView.setAlternatingRowColors(True)
 942                 if True:
 943                         self._unitsView.setHeaderHidden(True)
 944
 945                 self._layout = QtGui.QVBoxLayout()
 946                 self._layout.addLayout(self._selectedUnitLayout)
 947                 self._layout.addWidget(self._unitsView)
 948
 949                 centralWidget = QtGui.QWidget()
 950                 centralWidget.setLayout(self._layout)
 951
 952                 self._window = QtGui.QMainWindow(parent)
 953                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 954                 if parent is not None:
 955                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 956                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
 957                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 958                 self._window.setCentralWidget(centralWidget)
 959
 960                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
 961                 if defaultUnitName:
 962                         self.select_unit(defaultUnitName)
 963                 else:
 964                         self._select_unit(0)
 965                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
 966
 967                 self._sortActionGroup = QtGui.QActionGroup(None)
 968                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 969                 self._sortByNameAction.setText("Sort By Name")
 970                 self._sortByNameAction.setStatusTip("Sort the units by name")
 971                 self._sortByNameAction.setToolTip("Sort the units by name")
 972                 self._sortByNameAction.setCheckable(True)
 973                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 974                 self._sortByValueAction.setText("Sort By Value")
 975                 self._sortByValueAction.setStatusTip("Sort the units by value")
 976                 self._sortByValueAction.setToolTip("Sort the units by value")
 977                 self._sortByValueAction.setCheckable(True)
 978                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 979                 self._sortByUnitAction.setText("Sort By Unit")
 980                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 981                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 982                 self._sortByUnitAction.setCheckable(True)
 983
 984                 self._sortByValueAction.setChecked(True)
 985
 986                 self._chooseFavoritesAction = QtGui.QAction(None)
 987                 self._chooseFavoritesAction.setText("Select Favorites")
 988                 self._chooseFavoritesAction.setShortcut(QtGui.QKeySequence("CTRL+f"))
 989                 self._chooseFavoritesAction.triggered.connect(self._on_choose_favorites)
 990
 991                 self._app.showFavoritesAction.toggled.connect(self._on_show_favorites)
 992
 993                 self._previousUnitAction = QtGui.QAction(None)
 994                 self._previousUnitAction.setText("Previous Unit")
 995                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
 996                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
 997
 998                 self._nextUnitAction = QtGui.QAction(None)
 999                 self._nextUnitAction.setText("Next Unit")
1000                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
1001                 self._nextUnitAction.triggered.connect(self._on_next_unit)
1002
1003                 self._closeWindowAction = QtGui.QAction(None)
1004                 self._closeWindowAction.setText("Close Window")
1005                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
1006                 self._closeWindowAction.triggered.connect(self._on_close_window)
1007
1008                 fileMenu = self._window.menuBar().addMenu("&Units")
1009                 fileMenu.addAction(self._chooseFavoritesAction)
1010                 fileMenu.addAction(self._closeWindowAction)
1011                 fileMenu.addAction(self._app.quitAction)
1012
1013                 viewMenu = self._window.menuBar().addMenu("&View")
1014                 viewMenu.addAction(self._app.showFavoritesAction)
1015                 viewMenu.addSeparator()
1016                 viewMenu.addAction(self._sortByNameAction)
1017                 viewMenu.addAction(self._sortByValueAction)
1018                 viewMenu.addAction(self._sortByUnitAction)
1019                 viewMenu.addSeparator()
1020                 viewMenu.addAction(self._app.jumpAction)
1021                 viewMenu.addAction(self._app.recentAction)
1022                 viewMenu.addSeparator()
1023                 viewMenu.addAction(self._app.fullscreenAction)
1024
1025                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
1026                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
1027                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
1028
1029                 self._window.addAction(self._app.logAction)
1030                 self._window.addAction(self._nextUnitAction)
1031                 self._window.addAction(self._previousUnitAction)
1032                 self._window.addAction(self._chooseFavoritesAction)
1033
1034                 self._update_favorites()
1035                 self.set_fullscreen(self._app.fullscreenAction.isChecked())
1036                 self._window.show()
1037
1038         @property
1039         def window(self):
1040                 return self._window
1041
1042         def close(self):
1043                 for child in self.walk_children():
1044                         child.close()
1045                 self._window.close()
1046
1047         def set_fullscreen(self, isFullscreen):
1048                 if isFullscreen:
1049                         self._window.showFullScreen()
1050                 else:
1051                         self._window.showNormal()
1052
1053         def select_unit(self, unitName):
1054                 index = self._unitsModel.index_unit(unitName)
1055                 self._select_unit(index)
1056
1057         def walk_children(self):
1058                 if self._favoritesWindow is not None:
1059                         yield self._favoritesWindow
1060
1061         def _update_favorites(self):
1062                 if self._app.showFavoritesAction.isChecked():
1063                         unitNames = list(self._unitsModel.get_unit_names())
1064                         for i, unitName in enumerate(unitNames):
1065                                 if unitName in self._app.get_hidden_units(self._categoryName):
1066                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1067                                 else:
1068                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1069                 else:
1070                         for i in xrange(len(self._unitsModel)):
1071                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1072
1073         @misc_utils.log_exception(_moduleLogger)
1074         def _on_choose_favorites(self, obj = None):
1075                 assert self._favoritesWindow is None
1076                 self._favoritesWindow = FavoriteCategoriesWindow(
1077                         self._window,
1078                         self._app,
1079                         unit_data.get_units(self._categoryName),
1080                         self._app.get_hidden_units(self._categoryName)
1081                 )
1082                 self._favoritesWindow.window.destroyed.connect(self._on_close_favorites)
1083                 return self._favoritesWindow
1084
1085         @misc_utils.log_exception(_moduleLogger)
1086         def _on_show_favorites(self, checked = True):
1087                 if checked:
1088                         unitNames = list(self._unitsModel.get_unit_names())
1089                         for i, unitName in enumerate(unitNames):
1090                                 if unitName in self._app.get_hidden_units(self._categoryName):
1091                                         self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), True)
1092                 else:
1093                         for i in xrange(len(self._unitsModel)):
1094                                 self._unitsView.setRowHidden(i, self._unitsView.rootIndex(), False)
1095
1096         @misc_utils.log_exception(_moduleLogger)
1097         def _on_close_favorites(self, obj = None):
1098                 self._favoritesWindow = None
1099                 self._update_favorites()
1100
1101         @misc_utils.log_exception(_moduleLogger)
1102         def _on_previous_unit(self, checked = True):
1103                 self._select_unit(self._selectedIndex - 1)
1104
1105         @misc_utils.log_exception(_moduleLogger)
1106         def _on_next_unit(self, checked = True):
1107                 self._select_unit(self._selectedIndex + 1)
1108
1109         @misc_utils.log_exception(_moduleLogger)
1110         def _on_close_window(self, checked = True):
1111                 self.close()
1112
1113         @misc_utils.log_exception(_moduleLogger)
1114         def _on_sort_by_name(self, checked = False):
1115                 self._unitsModel.sort(UnitData.NAME_COLUMN, QtCore.Qt.DescendingOrder)
1116
1117         @misc_utils.log_exception(_moduleLogger)
1118         def _on_sort_by_value(self, checked = False):
1119                 self._unitsModel.sort(UnitData.VALUE_COLUMN_0)
1120
1121         @misc_utils.log_exception(_moduleLogger)
1122         def _on_sort_by_unit(self, checked = False):
1123                 self._unitsModel.sort(UnitData.UNIT_COLUMN, QtCore.Qt.DescendingOrder)
1124
1125         @misc_utils.log_exception(_moduleLogger)
1126         def _on_unit_clicked(self, index):
1127                 self._select_unit(index.row())
1128
1129         @misc_utils.log_exception(_moduleLogger)
1130         def _on_value_edited(self, *args):
1131                 userInput = self._selectedUnitValue.text()
1132                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
1133
1134         def _select_unit(self, index):
1135                 unit = self._unitsModel.get_unit(index)
1136                 self._selectedUnitName.setText(unit.name)
1137                 self._selectedUnitValue.setText(str(unit.value))
1138                 self._selectedUnitSymbol.setText(unit.unit)
1139
1140                 self._selectedIndex = index
1141                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
1142                 self._unitsView.scrollTo(qindex)
1143                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
1144
1145
1146 def run_gonvert():
1147         app = QtGui.QApplication([])
1148         handle = Gonvert(app)
1149         return app.exec_()
1150
1151
1152 if __name__ == "__main__":
1153         logging.basicConfig(level = logging.DEBUG)
1154         try:
1155                 os.makedirs(constants._data_path_)
1156         except OSError, e:
1157                 if e.errno != 17:
1158                         raise
1159
1160         val = run_gonvert()
1161         sys.exit(val)