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         # @todo Favorites
  56
  57         _DATA_PATHS = [
  58                 os.path.dirname(__file__),
  59                 os.path.join(os.path.dirname(__file__), "../data"),
  60                 os.path.join(os.path.dirname(__file__), "../lib"),
  61                 '/usr/share/gonvert',
  62                 '/usr/lib/gonvert',
  63         ]
  64
  65         def __init__(self, app):
  66                 self._dataPath = ""
  67                 for dataPath in self._DATA_PATHS:
  68                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  69                         if os.path.isfile(appIconPath):
  70                                 self._dataPath = dataPath
  71                                 break
  72                 else:
  73                         raise RuntimeError("UI Descriptor not found!")
  74                 self._app = app
  75                 self._appIconPath = appIconPath
  76                 self._recent = []
  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                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 101                 self._fullscreenAction.triggered.connect(self._on_toggle_fullscreen)
 102
 103                 self._logAction = QtGui.QAction(None)
 104                 self._logAction.setText("Log")
 105                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 106                 self._logAction.triggered.connect(self._on_log)
 107
 108                 self._quitAction = QtGui.QAction(None)
 109                 self._quitAction.setText("Quit")
 110                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 111                 self._quitAction.triggered.connect(self._on_quit)
 112
 113                 self._app.lastWindowClosed.connect(self._on_app_quit)
 114                 self.request_category()
 115                 self.load_settings()
 116
 117         def request_category(self):
 118                 if self._catWindow is not None:
 119                         self._catWindow.close()
 120                         self._catWindow = None
 121                 self._catWindow = CategoryWindow(None, self)
 122                 self._catWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_catWindow", obj))
 123                 return self._catWindow
 124
 125         def search_units(self):
 126                 if self._jumpWindow is not None:
 127                         self._jumpWindow.close()
 128                         self._jumpWindow = None
 129                 self._jumpWindow = QuickJump(None, self)
 130                 self._jumpWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_jumpWindow", obj))
 131                 return self._jumpWindow
 132
 133         def show_recent(self):
 134                 if self._recentWindow is not None:
 135                         self._recentWindow.close()
 136                         self._recentWindow = None
 137                 self._recentWindow = Recent(None, self)
 138                 self._recentWindow.window.destroyed.connect(lambda obj = None: self._on_child_close("_recentWindow", obj))
 139                 return self._recentWindow
 140
 141         def add_recent(self, categoryName, unitName):
 142                 catUnit = categoryName, unitName
 143                 try:
 144                         self._recent.remove(catUnit)
 145                 except ValueError:
 146                         pass # ignore if its not already in the recent history
 147                 assert catUnit not in self._recent
 148                 self._recent.append(catUnit)
 149
 150         def get_recent_unit(self, categoryName):
 151                 for catName, unitName in reversed(self._recent):
 152                         if catName == categoryName:
 153                                 return unitName
 154                 else:
 155                         return ""
 156
 157         def get_recent(self):
 158                 return reversed(self._recent)
 159
 160         def load_settings(self):
 161                 try:
 162                         with open(constants._user_settings_, "r") as settingsFile:
 163                                 settings = simplejson.load(settingsFile)
 164                 except IOError, e:
 165                         settings = {}
 166                 self._isFullscreen = settings.get("isFullScreen", self._isFullscreen)
 167                 recent = settings.get("recent", self._recent)
 168                 for category, unit in recent:
 169                         self.add_recent(category, unit)
 170
 171                 for window in self._walk_children():
 172                         window.set_fullscreen(self._isFullscreen)
 173                 if self._recent:
 174                         self._catWindow.select_category(self._recent[-1][0])
 175
 176         def save_settings(self):
 177                 settings = {
 178                         "isFullScreen": self._isFullscreen,
 179                         "recent": self._recent,
 180                 }
 181                 with open(constants._user_settings_, "w") as settingsFile:
 182                         simplejson.dump(settings, settingsFile)
 183
 184         @property
 185         def appIconPath(self):
 186                 return self._appIconPath
 187
 188         @property
 189         def jumpAction(self):
 190                 return self._jumpAction
 191
 192         @property
 193         def recentAction(self):
 194                 return self._recentAction
 195
 196         @property
 197         def fullscreenAction(self):
 198                 return self._fullscreenAction
 199
 200         @property
 201         def logAction(self):
 202                 return self._logAction
 203
 204         @property
 205         def quitAction(self):
 206                 return self._quitAction
 207
 208         def _walk_children(self):
 209                 if self._catWindow is not None:
 210                         yield self._catWindow
 211                 if self._jumpWindow is not None:
 212                         yield self._jumpWindow
 213                 if self._recentWindow is not None:
 214                         yield self._recentWindow
 215
 216         @misc_utils.log_exception(_moduleLogger)
 217         def _on_app_quit(self, checked = False):
 218                 self.save_settings()
 219
 220         @misc_utils.log_exception(_moduleLogger)
 221         def _on_child_close(self, name, obj = None):
 222                 if not hasattr(self, name):
 223                         _moduleLogger.info("Something weird going on when we don't have a %s" % name)
 224                         return
 225                 setattr(self, name, None)
 226
 227         @misc_utils.log_exception(_moduleLogger)
 228         def _on_toggle_fullscreen(self, checked = False):
 229                 self._isFullscreen = not self._isFullscreen
 230                 for window in self._walk_children():
 231                         window.set_fullscreen(self._isFullscreen)
 232
 233         @misc_utils.log_exception(_moduleLogger)
 234         def _on_jump_start(self, checked = False):
 235                 self.search_units()
 236
 237         @misc_utils.log_exception(_moduleLogger)
 238         def _on_recent_start(self, checked = False):
 239                 self.show_recent()
 240
 241         @misc_utils.log_exception(_moduleLogger)
 242         def _on_log(self, checked = False):
 243                 with open(constants._user_logpath_, "r") as f:
 244                         logLines = f.xreadlines()
 245                         log = "".join(logLines)
 246                         self._clipboard.setText(log)
 247
 248         @misc_utils.log_exception(_moduleLogger)
 249         def _on_quit(self, checked = False):
 250                 for window in self._walk_children():
 251                         window.close()
 252
 253
 254 class CategoryWindow(object):
 255
 256         def __init__(self, parent, app):
 257                 self._app = app
 258                 self._unitWindow = None
 259
 260                 self._categories = QtGui.QTreeWidget()
 261                 self._categories.setHeaderLabels(["Categories"])
 262                 self._categories.itemClicked.connect(self._on_category_clicked)
 263                 self._categories.setHeaderHidden(True)
 264                 self._categories.setAlternatingRowColors(True)
 265                 for catName in unit_data.UNIT_CATEGORIES:
 266                         twi = QtGui.QTreeWidgetItem(self._categories)
 267                         twi.setText(0, catName)
 268
 269                 self._layout = QtGui.QVBoxLayout()
 270                 self._layout.addWidget(self._categories)
 271
 272                 centralWidget = QtGui.QWidget()
 273                 centralWidget.setLayout(self._layout)
 274
 275                 self._window = QtGui.QMainWindow(parent)
 276                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 277                 if parent is not None:
 278                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 279                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 280                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 281                 self._window.setCentralWidget(centralWidget)
 282
 283                 self._closeWindowAction = QtGui.QAction(None)
 284                 self._closeWindowAction.setText("Window")
 285                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 286                 self._closeWindowAction.triggered.connect(self._on_close_window)
 287
 288                 fileMenu = self._window.menuBar().addMenu("&File")
 289                 fileMenu.addAction(self._closeWindowAction)
 290                 fileMenu.addAction(self._app.quitAction)
 291
 292                 viewMenu = self._window.menuBar().addMenu("&View")
 293                 viewMenu.addAction(self._app.fullscreenAction)
 294                 viewMenu.addSeparator()
 295                 viewMenu.addAction(self._app.jumpAction)
 296                 viewMenu.addAction(self._app.recentAction)
 297
 298                 self._window.addAction(self._app.logAction)
 299
 300                 self._window.show()
 301
 302         @property
 303         def window(self):
 304                 return self._window
 305
 306         def walk_children(self):
 307                 if self._unitWindow is not None:
 308                         yield self._unitWindow
 309
 310         def close(self):
 311                 for child in self.walk_children():
 312                         child.close()
 313                 self._window.close()
 314
 315         def select_category(self, categoryName):
 316                 for child in self.walk_children():
 317                         child.close()
 318                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 319                 self._unitWindow.window.destroyed.connect(self._on_child_close)
 320                 return self._unitWindow
 321
 322         def set_fullscreen(self, isFullscreen):
 323                 if isFullscreen:
 324                         self._window.showFullScreen()
 325                 else:
 326                         self._window.showNormal()
 327                 for child in self.walk_children():
 328                         child.set_fullscreen(isFullscreen)
 329
 330         @misc_utils.log_exception(_moduleLogger)
 331         def _on_child_close(self, obj = None):
 332                 self._unitWindow = None
 333
 334         @misc_utils.log_exception(_moduleLogger)
 335         def _on_close_window(self, checked = True):
 336                 self.close()
 337
 338         @misc_utils.log_exception(_moduleLogger)
 339         def _on_category_clicked(self, item, columnIndex):
 340                 categoryName = unicode(item.text(0))
 341                 self.select_category(categoryName)
 342
 343
 344 class QuickJump(object):
 345
 346         MINIMAL_ENTRY = 3
 347
 348         def __init__(self, parent, app):
 349                 self._app = app
 350
 351                 self._searchLabel = QtGui.QLabel("Search:")
 352                 self._searchEntry = QtGui.QLineEdit("")
 353                 self._searchEntry.textEdited.connect(self._on_search_edited)
 354
 355                 self._entryLayout = QtGui.QHBoxLayout()
 356                 self._entryLayout.addWidget(self._searchLabel)
 357                 self._entryLayout.addWidget(self._searchEntry)
 358
 359                 self._resultsBox = QtGui.QTreeWidget()
 360                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 361                 self._resultsBox.setHeaderHidden(True)
 362                 self._resultsBox.setAlternatingRowColors(True)
 363                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 364
 365                 self._layout = QtGui.QVBoxLayout()
 366                 self._layout.addLayout(self._entryLayout)
 367                 self._layout.addWidget(self._resultsBox)
 368
 369                 centralWidget = QtGui.QWidget()
 370                 centralWidget.setLayout(self._layout)
 371
 372                 self._window = QtGui.QMainWindow(parent)
 373                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 374                 if parent is not None:
 375                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 376                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 377                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 378                 self._window.setCentralWidget(centralWidget)
 379
 380                 self._closeWindowAction = QtGui.QAction(None)
 381                 self._closeWindowAction.setText("Window")
 382                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 383                 self._closeWindowAction.triggered.connect(self._on_close_window)
 384
 385                 fileMenu = self._window.menuBar().addMenu("&File")
 386                 fileMenu.addAction(self._closeWindowAction)
 387                 fileMenu.addAction(self._app.quitAction)
 388
 389                 viewMenu = self._window.menuBar().addMenu("&View")
 390                 viewMenu.addAction(self._app.fullscreenAction)
 391
 392                 self._window.addAction(self._app.logAction)
 393
 394                 self._window.show()
 395
 396         @property
 397         def window(self):
 398                 return self._window
 399
 400         def close(self):
 401                 self._window.close()
 402
 403         def set_fullscreen(self, isFullscreen):
 404                 if isFullscreen:
 405                         self._window.showFullScreen()
 406                 else:
 407                         self._window.showNormal()
 408
 409         @misc_utils.log_exception(_moduleLogger)
 410         def _on_close_window(self, checked = True):
 411                 self.close()
 412
 413         @misc_utils.log_exception(_moduleLogger)
 414         def _on_result_clicked(self, item, columnIndex):
 415                 categoryName = unicode(item.text(0))
 416                 unitName = unicode(item.text(1))
 417                 catWindow = self._app.request_category()
 418                 unitsWindow = catWindow.select_category(categoryName)
 419                 unitsWindow.select_unit(unitName)
 420                 self.close()
 421
 422         @misc_utils.log_exception(_moduleLogger)
 423         def _on_search_edited(self, *args):
 424                 userInput = self._searchEntry.text()
 425                 if len(userInput) <  self.MINIMAL_ENTRY:
 426                         return
 427
 428                 self._resultsBox.clear()
 429                 lowerInput = str(userInput).lower()
 430                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 431                         units = unit_data.get_units(category)
 432                         for unitIndex, unit in enumerate(units):
 433                                 loweredUnit = unit.lower()
 434                                 if lowerInput in loweredUnit:
 435                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 436                                         twi.setText(0, category)
 437                                         twi.setText(1, unit)
 438
 439
 440 class Recent(object):
 441
 442         def __init__(self, parent, app):
 443                 self._app = app
 444
 445                 self._resultsBox = QtGui.QTreeWidget()
 446                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 447                 self._resultsBox.setHeaderHidden(True)
 448                 self._resultsBox.setAlternatingRowColors(True)
 449                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 450
 451                 self._layout = QtGui.QVBoxLayout()
 452                 self._layout.addWidget(self._resultsBox)
 453
 454                 centralWidget = QtGui.QWidget()
 455                 centralWidget.setLayout(self._layout)
 456
 457                 self._window = QtGui.QMainWindow(parent)
 458                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 459                 if parent is not None:
 460                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 461                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 462                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 463                 self._window.setCentralWidget(centralWidget)
 464
 465                 for cat, unit in self._app.get_recent():
 466                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 467                         twi.setText(0, cat)
 468                         twi.setText(1, unit)
 469
 470                 self._closeWindowAction = QtGui.QAction(None)
 471                 self._closeWindowAction.setText("Window")
 472                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 473                 self._closeWindowAction.triggered.connect(self._on_close_window)
 474
 475                 fileMenu = self._window.menuBar().addMenu("&File")
 476                 fileMenu.addAction(self._closeWindowAction)
 477                 fileMenu.addAction(self._app.quitAction)
 478
 479                 viewMenu = self._window.menuBar().addMenu("&View")
 480                 viewMenu.addAction(self._app.fullscreenAction)
 481
 482                 self._window.addAction(self._app.logAction)
 483
 484                 self._window.show()
 485
 486         @property
 487         def window(self):
 488                 return self._window
 489
 490         def close(self):
 491                 self._window.close()
 492
 493         def set_fullscreen(self, isFullscreen):
 494                 if isFullscreen:
 495                         self._window.showFullScreen()
 496                 else:
 497                         self._window.showNormal()
 498
 499         @misc_utils.log_exception(_moduleLogger)
 500         def _on_close_window(self, checked = True):
 501                 self.close()
 502
 503         @misc_utils.log_exception(_moduleLogger)
 504         def _on_result_clicked(self, item, columnIndex):
 505                 categoryName = unicode(item.text(0))
 506                 unitName = unicode(item.text(1))
 507                 catWindow = self._app.request_category()
 508                 unitsWindow = catWindow.select_category(categoryName)
 509                 unitsWindow.select_unit(unitName)
 510                 self.close()
 511
 512
 513 class UnitData(object):
 514
 515         HEADERS = ["Name", "Value", "", "Unit"]
 516         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
 517
 518         def __init__(self, name, unit, description, conversion):
 519                 self._name = name
 520                 self._unit = unit
 521                 self._description = description
 522                 self._conversion = conversion
 523
 524                 self._value = 0.0
 525                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
 526
 527         @property
 528         def name(self):
 529                 return self._name
 530
 531         @property
 532         def value(self):
 533                 return self._value
 534
 535         def update_value(self, newValue):
 536                 self._value = newValue
 537                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
 538
 539         @property
 540         def unit(self):
 541                 return self._unit
 542
 543         @property
 544         def conversion(self):
 545                 return self._conversion
 546
 547         def data(self, column):
 548                 try:
 549                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
 550                 except IndexError:
 551                         return None
 552
 553
 554 class UnitModel(QtCore.QAbstractItemModel):
 555
 556         def __init__(self, categoryName, parent=None):
 557                 super(UnitModel, self).__init__(parent)
 558                 self._categoryName = categoryName
 559                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 560
 561                 self._children = []
 562                 for key in unit_data.get_units(self._categoryName):
 563                         conversion, unit, description = self._unitData[key]
 564                         self._children.append(UnitData(key, unit, description, conversion))
 565                 self._sortSettings = None
 566
 567         @misc_utils.log_exception(_moduleLogger)
 568         def columnCount(self, parent):
 569                 if parent.isValid():
 570                         return 0
 571                 else:
 572                         return len(UnitData.HEADERS)
 573
 574         @misc_utils.log_exception(_moduleLogger)
 575         def data(self, index, role):
 576                 if not index.isValid():
 577                         return None
 578                 elif role == QtCore.Qt.TextAlignmentRole:
 579                         return UnitData.ALIGNMENT[index.column()]
 580                 elif role != QtCore.Qt.DisplayRole:
 581                         return None
 582
 583                 item = index.internalPointer()
 584                 if isinstance(item, UnitData):
 585                         return item.data(index.column())
 586                 elif item is UnitData.HEADERS:
 587                         return item[index.column()]
 588
 589         @misc_utils.log_exception(_moduleLogger)
 590         def sort(self, column, order = QtCore.Qt.AscendingOrder):
 591                 self._sortSettings = column, order
 592                 isReverse = order == QtCore.Qt.AscendingOrder
 593                 if column == 0:
 594                         key_func = lambda item: item.name
 595                 elif column in [1, 2]:
 596                         key_func = lambda item: item.value
 597                 elif column == 3:
 598                         key_func = lambda item: item.unit
 599                 self._children.sort(key=key_func, reverse = isReverse)
 600
 601                 self._all_changed()
 602
 603         @misc_utils.log_exception(_moduleLogger)
 604         def flags(self, index):
 605                 if not index.isValid():
 606                         return QtCore.Qt.NoItemFlags
 607
 608                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
 609
 610         @misc_utils.log_exception(_moduleLogger)
 611         def headerData(self, section, orientation, role):
 612                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
 613                         return UnitData.HEADERS[section]
 614
 615                 return None
 616
 617         @misc_utils.log_exception(_moduleLogger)
 618         def index(self, row, column, parent):
 619                 if not self.hasIndex(row, column, parent):
 620                         return QtCore.QModelIndex()
 621
 622                 if parent.isValid():
 623                         return QtCore.QModelIndex()
 624
 625                 parentItem = UnitData.HEADERS
 626                 childItem = self._children[row]
 627                 if childItem:
 628                         return self.createIndex(row, column, childItem)
 629                 else:
 630                         return QtCore.QModelIndex()
 631
 632         @misc_utils.log_exception(_moduleLogger)
 633         def parent(self, index):
 634                 if not index.isValid():
 635                         return QtCore.QModelIndex()
 636
 637                 childItem = index.internalPointer()
 638                 if isinstance(childItem, UnitData):
 639                         return QtCore.QModelIndex()
 640                 elif childItem is UnitData.HEADERS:
 641                         return None
 642
 643         @misc_utils.log_exception(_moduleLogger)
 644         def rowCount(self, parent):
 645                 if 0 < parent.column():
 646                         return 0
 647
 648                 if not parent.isValid():
 649                         return len(self._children)
 650                 else:
 651                         return len(self._children)
 652
 653         def get_unit(self, index):
 654                 assert 0 <= index
 655                 return self._children[index]
 656
 657         def index_unit(self, unitName):
 658                 for i, child in enumerate(self._children):
 659                         if child.name == unitName:
 660                                 return i
 661                 else:
 662                         raise RuntimeError("Unit not found")
 663
 664         def update_values(self, fromIndex, userInput):
 665                 value = self._sanitize_value(userInput)
 666                 func, arg = self._children[fromIndex].conversion
 667                 base = func.to_base(value, arg)
 668                 for i, child in enumerate(self._children):
 669                         if i == fromIndex:
 670                                 continue
 671                         func, arg = child.conversion
 672                         newValue = func.from_base(base, arg)
 673                         child.update_value(newValue)
 674
 675                 if self._sortSettings is not None:
 676                         self.sort(*self._sortSettings)
 677                 self._all_changed()
 678
 679         def _all_changed(self):
 680                 topLeft = self.createIndex(0, 0, self._children[0])
 681                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
 682                 self.dataChanged.emit(topLeft, bottomRight)
 683
 684         def _sanitize_value(self, userEntry):
 685                 if self._categoryName == "Computer Numbers":
 686                         if userEntry == '':
 687                                 value = '0'
 688                         else:
 689                                 value = userEntry
 690                 else:
 691                         if userEntry == '':
 692                                 value = 0.0
 693                         else:
 694                                 value = float(userEntry)
 695                 return value
 696
 697
 698 class UnitWindow(object):
 699
 700         def __init__(self, parent, category, app):
 701                 self._app = app
 702                 self._categoryName = category
 703                 self._selectedIndex = 0
 704
 705                 self._selectedUnitName = QtGui.QLabel()
 706                 self._selectedUnitValue = QtGui.QLineEdit()
 707                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
 708                 self._selectedUnitSymbol = QtGui.QLabel()
 709
 710                 self._selectedUnitLayout = QtGui.QHBoxLayout()
 711                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
 712                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
 713                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
 714
 715                 self._unitsModel = UnitModel(self._categoryName)
 716                 self._unitsView = QtGui.QTreeView()
 717                 self._unitsView.setModel(self._unitsModel)
 718                 self._unitsView.clicked.connect(self._on_unit_clicked)
 719                 self._unitsView.setUniformRowHeights(True)
 720                 self._unitsView.header().setSortIndicatorShown(True)
 721                 self._unitsView.header().setClickable(True)
 722                 self._unitsView.setSortingEnabled(True)
 723                 self._unitsView.setAlternatingRowColors(True)
 724                 if True:
 725                         self._unitsView.setHeaderHidden(True)
 726
 727                 self._layout = QtGui.QVBoxLayout()
 728                 self._layout.addLayout(self._selectedUnitLayout)
 729                 self._layout.addWidget(self._unitsView)
 730
 731                 centralWidget = QtGui.QWidget()
 732                 centralWidget.setLayout(self._layout)
 733
 734                 self._window = QtGui.QMainWindow(parent)
 735                 self._window.setAttribute(QtCore.Qt.WA_DeleteOnClose, True)
 736                 if parent is not None:
 737                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 738                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
 739                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 740                 self._window.setCentralWidget(centralWidget)
 741
 742                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
 743                 if defaultUnitName:
 744                         self.select_unit(defaultUnitName)
 745                 else:
 746                         self._select_unit(0)
 747                 self._unitsModel.sort(1)
 748
 749                 self._sortActionGroup = QtGui.QActionGroup(None)
 750                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 751                 self._sortByNameAction.setText("Sort By Name")
 752                 self._sortByNameAction.setStatusTip("Sort the units by name")
 753                 self._sortByNameAction.setToolTip("Sort the units by name")
 754                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 755                 self._sortByValueAction.setText("Sort By Value")
 756                 self._sortByValueAction.setStatusTip("Sort the units by value")
 757                 self._sortByValueAction.setToolTip("Sort the units by value")
 758                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 759                 self._sortByUnitAction.setText("Sort By Unit")
 760                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 761                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 762
 763                 self._sortByValueAction.setChecked(True)
 764
 765                 self._previousUnitAction = QtGui.QAction(None)
 766                 self._previousUnitAction.setText("Previous Unit")
 767                 self._previousUnitAction.setShortcut(QtGui.QKeySequence("Up"))
 768                 self._previousUnitAction.triggered.connect(self._on_previous_unit)
 769
 770                 self._nextUnitAction = QtGui.QAction(None)
 771                 self._nextUnitAction.setText("Next Unit")
 772                 self._nextUnitAction.setShortcut(QtGui.QKeySequence("Down"))
 773                 self._nextUnitAction.triggered.connect(self._on_next_unit)
 774
 775                 self._closeWindowAction = QtGui.QAction(None)
 776                 self._closeWindowAction.setText("Close Window")
 777                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 778                 self._closeWindowAction.triggered.connect(self._on_close_window)
 779
 780                 fileMenu = self._window.menuBar().addMenu("&File")
 781                 fileMenu.addAction(self._closeWindowAction)
 782                 fileMenu.addAction(self._app.quitAction)
 783
 784                 viewMenu = self._window.menuBar().addMenu("&View")
 785                 viewMenu.addAction(self._app.fullscreenAction)
 786                 viewMenu.addSeparator()
 787                 viewMenu.addAction(self._app.jumpAction)
 788                 viewMenu.addAction(self._app.recentAction)
 789                 viewMenu.addSeparator()
 790                 viewMenu.addAction(self._sortByNameAction)
 791                 viewMenu.addAction(self._sortByValueAction)
 792                 viewMenu.addAction(self._sortByUnitAction)
 793
 794                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
 795                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
 796                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
 797
 798                 self._window.addAction(self._app.logAction)
 799                 self._window.addAction(self._nextUnitAction)
 800                 self._window.addAction(self._previousUnitAction)
 801
 802                 self._window.show()
 803
 804         @property
 805         def window(self):
 806                 return self._window
 807
 808         def close(self):
 809                 self._window.close()
 810
 811         def set_fullscreen(self, isFullscreen):
 812                 if isFullscreen:
 813                         self._window.showFullScreen()
 814                 else:
 815                         self._window.showNormal()
 816
 817         def select_unit(self, unitName):
 818                 index = self._unitsModel.index_unit(unitName)
 819                 self._select_unit(index)
 820
 821         @misc_utils.log_exception(_moduleLogger)
 822         def _on_previous_unit(self, checked = True):
 823                 self._select_unit(self._selectedIndex - 1)
 824
 825         @misc_utils.log_exception(_moduleLogger)
 826         def _on_next_unit(self, checked = True):
 827                 self._select_unit(self._selectedIndex + 1)
 828
 829         @misc_utils.log_exception(_moduleLogger)
 830         def _on_close_window(self, checked = True):
 831                 self.close()
 832
 833         @misc_utils.log_exception(_moduleLogger)
 834         def _on_sort_by_name(self, checked = False):
 835                 self._unitsModel.sort(0, QtCore.Qt.DescendingOrder)
 836
 837         @misc_utils.log_exception(_moduleLogger)
 838         def _on_sort_by_value(self, checked = False):
 839                 self._unitsModel.sort(1)
 840
 841         @misc_utils.log_exception(_moduleLogger)
 842         def _on_sort_by_unit(self, checked = False):
 843                 self._unitsModel.sort(3, QtCore.Qt.DescendingOrder)
 844
 845         @misc_utils.log_exception(_moduleLogger)
 846         def _on_unit_clicked(self, index):
 847                 self._select_unit(index.row())
 848
 849         @misc_utils.log_exception(_moduleLogger)
 850         def _on_value_edited(self, *args):
 851                 userInput = self._selectedUnitValue.text()
 852                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
 853
 854         def _select_unit(self, index):
 855                 unit = self._unitsModel.get_unit(index)
 856                 self._selectedUnitName.setText(unit.name)
 857                 self._selectedUnitValue.setText(str(unit.value))
 858                 self._selectedUnitSymbol.setText(unit.unit)
 859
 860                 self._selectedIndex = index
 861                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
 862                 self._unitsView.scrollTo(qindex)
 863                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
 864
 865
 866 def run_gonvert():
 867         app = QtGui.QApplication([])
 868         handle = Gonvert(app)
 869         return app.exec_()
 870
 871
 872 if __name__ == "__main__":
 873         logging.basicConfig(level = logging.DEBUG)
 874         try:
 875                 os.makedirs(constants._data_path_)
 876         except OSError, e:
 877                 if e.errno != 17:
 878                         raise
 879
 880         val = run_gonvert()
 881         sys.exit(val)