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