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         # @bug Fix the resurrecting window problem
  57         # @todo Unit conversion window: focus always on input, arrows switch units
  58
  59         _DATA_PATHS = [
  60                 os.path.dirname(__file__),
  61                 os.path.join(os.path.dirname(__file__), "../data"),
  62                 os.path.join(os.path.dirname(__file__), "../lib"),
  63                 '/usr/share/gonvert',
  64                 '/usr/lib/gonvert',
  65         ]
  66
  67         def __init__(self, app):
  68                 self._dataPath = ""
  69                 for dataPath in self._DATA_PATHS:
  70                         appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
  71                         if os.path.isfile(appIconPath):
  72                                 self._dataPath = dataPath
  73                                 break
  74                 else:
  75                         raise RuntimeError("UI Descriptor not found!")
  76                 self._app = app
  77                 self._appIconPath = appIconPath
  78                 self._recent = []
  79                 self._isFullscreen = False
  80                 self._clipboard = QtGui.QApplication.clipboard()
  81
  82                 self._jumpWindow = None
  83                 self._recentWindow = None
  84                 self._catWindow = None
  85
  86                 self._jumpAction = QtGui.QAction(None)
  87                 self._jumpAction.setText("Quick Jump")
  88                 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
  89                 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
  90                 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
  91                 self._jumpAction.triggered.connect(self._on_jump_start)
  92
  93                 self._recentAction = QtGui.QAction(None)
  94                 self._recentAction.setText("Recent Units")
  95                 self._recentAction.setStatusTip("View the recent units")
  96                 self._recentAction.setToolTip("View the recent units")
  97                 self._recentAction.setShortcut(QtGui.QKeySequence("CTRL+r"))
  98                 self._recentAction.triggered.connect(self._on_recent_start)
  99
 100                 self._fullscreenAction = QtGui.QAction(None)
 101                 self._fullscreenAction.setText("Toggle Fullscreen")
 102                 self._fullscreenAction.setShortcut(QtGui.QKeySequence("CTRL+Enter"))
 103                 self._fullscreenAction.triggered.connect(self._on_toggle_fullscreen)
 104
 105                 self._logAction = QtGui.QAction(None)
 106                 self._logAction.setText("Log")
 107                 self._logAction.setShortcut(QtGui.QKeySequence("CTRL+l"))
 108                 self._logAction.triggered.connect(self._on_log)
 109
 110                 self._quitAction = QtGui.QAction(None)
 111                 self._quitAction.setText("Quit")
 112                 self._quitAction.setShortcut(QtGui.QKeySequence("CTRL+q"))
 113                 self._quitAction.triggered.connect(self._on_quit)
 114
 115                 self._app.lastWindowClosed.connect(self._on_app_quit)
 116                 self.request_category()
 117                 self.load_settings()
 118
 119         def request_category(self):
 120                 if self._catWindow is not None:
 121                         self._catWindow.close()
 122                         self._catWindow = None
 123                 self._catWindow = CategoryWindow(None, self)
 124                 return self._catWindow
 125
 126         def search_units(self):
 127                 if self._jumpWindow is not None:
 128                         self._jumpWindow.close()
 129                         self._jumpWindow = None
 130                 self._jumpWindow = QuickJump(None, self)
 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                 return self._recentWindow
 139
 140         def add_recent(self, categoryName, unitName):
 141                 catUnit = categoryName, unitName
 142                 try:
 143                         self._recent.remove(catUnit)
 144                 except ValueError:
 145                         pass # ignore if its not already in the recent history
 146                 assert catUnit not in self._recent
 147                 self._recent.append(catUnit)
 148
 149         def get_recent_unit(self, categoryName):
 150                 for catName, unitName in reversed(self._recent):
 151                         if catName == categoryName:
 152                                 return unitName
 153                 else:
 154                         return ""
 155
 156         def get_recent(self):
 157                 return reversed(self._recent)
 158
 159         def load_settings(self):
 160                 try:
 161                         with open(constants._user_settings_, "r") as settingsFile:
 162                                 settings = simplejson.load(settingsFile)
 163                 except IOError, e:
 164                         settings = {}
 165                 self._isFullscreen = settings.get("isFullScreen", self._isFullscreen)
 166                 recent = settings.get("recent", self._recent)
 167                 for category, unit in recent:
 168                         self.add_recent(category, unit)
 169
 170                 for window in self._walk_children():
 171                         window.set_fullscreen(self._isFullscreen)
 172                 if self._recent:
 173                         self._catWindow.select_category(self._recent[-1][0])
 174
 175         def save_settings(self):
 176                 settings = {
 177                         "isFullScreen": self._isFullscreen,
 178                         "recent": self._recent,
 179                 }
 180                 with open(constants._user_settings_, "w") as settingsFile:
 181                         simplejson.dump(settings, settingsFile)
 182
 183         @property
 184         def appIconPath(self):
 185                 return self._appIconPath
 186
 187         @property
 188         def jumpAction(self):
 189                 return self._jumpAction
 190
 191         @property
 192         def recentAction(self):
 193                 return self._recentAction
 194
 195         @property
 196         def fullscreenAction(self):
 197                 return self._fullscreenAction
 198
 199         @property
 200         def logAction(self):
 201                 return self._logAction
 202
 203         @property
 204         def quitAction(self):
 205                 return self._quitAction
 206
 207         def _walk_children(self):
 208                 if self._catWindow is not None:
 209                         yield self._catWindow
 210                 if self._jumpWindow is not None:
 211                         yield self._jumpWindow
 212                 if self._recentWindow is not None:
 213                         yield self._recentWindow
 214
 215         @misc_utils.log_exception(_moduleLogger)
 216         def _on_app_quit(self, checked = False):
 217                 self.save_settings()
 218
 219         @misc_utils.log_exception(_moduleLogger)
 220         def _on_toggle_fullscreen(self, checked = False):
 221                 self._isFullscreen = not self._isFullscreen
 222                 for window in self._walk_children():
 223                         window.set_fullscreen(self._isFullscreen)
 224
 225         @misc_utils.log_exception(_moduleLogger)
 226         def _on_jump_start(self, checked = False):
 227                 self.search_units()
 228
 229         @misc_utils.log_exception(_moduleLogger)
 230         def _on_recent_start(self, checked = False):
 231                 self.show_recent()
 232
 233         @misc_utils.log_exception(_moduleLogger)
 234         def _on_log(self, checked = False):
 235                 with open(constants._user_logpath_, "r") as f:
 236                         logLines = f.xreadlines()
 237                         log = "".join(logLines)
 238                         self._clipboard.setText(log)
 239
 240         @misc_utils.log_exception(_moduleLogger)
 241         def _on_quit(self, checked = False):
 242                 for window in self._walk_children():
 243                         window.close()
 244
 245
 246 class CategoryWindow(object):
 247
 248         def __init__(self, parent, app):
 249                 self._app = app
 250                 self._unitWindow = None
 251
 252                 self._categories = QtGui.QTreeWidget()
 253                 self._categories.setHeaderLabels(["Categories"])
 254                 self._categories.itemClicked.connect(self._on_category_clicked)
 255                 self._categories.setHeaderHidden(True)
 256                 self._categories.setAlternatingRowColors(True)
 257                 for catName in unit_data.UNIT_CATEGORIES:
 258                         twi = QtGui.QTreeWidgetItem(self._categories)
 259                         twi.setText(0, catName)
 260
 261                 self._layout = QtGui.QVBoxLayout()
 262                 self._layout.addWidget(self._categories)
 263
 264                 centralWidget = QtGui.QWidget()
 265                 centralWidget.setLayout(self._layout)
 266
 267                 self._window = QtGui.QMainWindow(parent)
 268                 if parent is not None:
 269                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 270                 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
 271                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 272                 self._window.setCentralWidget(centralWidget)
 273
 274                 self._closeWindowAction = QtGui.QAction(None)
 275                 self._closeWindowAction.setText("Window")
 276                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 277                 self._closeWindowAction.triggered.connect(self._on_close_window)
 278
 279                 fileMenu = self._window.menuBar().addMenu("&File")
 280                 fileMenu.addAction(self._closeWindowAction)
 281                 fileMenu.addAction(self._app.quitAction)
 282
 283                 viewMenu = self._window.menuBar().addMenu("&View")
 284                 viewMenu.addAction(self._app.fullscreenAction)
 285                 viewMenu.addSeparator()
 286                 viewMenu.addAction(self._app.jumpAction)
 287                 viewMenu.addAction(self._app.recentAction)
 288
 289                 self._window.addAction(self._app.logAction)
 290
 291                 self._window.show()
 292
 293         def walk_children(self):
 294                 if self._unitWindow is not None:
 295                         yield self._unitWindow
 296
 297         def close(self):
 298                 for child in self.walk_children():
 299                         child.close()
 300                 self._window.close()
 301
 302         def select_category(self, categoryName):
 303                 for child in self.walk_children():
 304                         child.close()
 305                 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
 306                 return self._unitWindow
 307
 308         def set_fullscreen(self, isFullscreen):
 309                 if isFullscreen:
 310                         self._window.showFullScreen()
 311                 else:
 312                         self._window.showNormal()
 313                 for child in self.walk_children():
 314                         child.set_fullscreen(isFullscreen)
 315
 316         @misc_utils.log_exception(_moduleLogger)
 317         def _on_close_window(self, checked = True):
 318                 self.close()
 319
 320         @misc_utils.log_exception(_moduleLogger)
 321         def _on_category_clicked(self, item, columnIndex):
 322                 categoryName = unicode(item.text(0))
 323                 self.select_category(categoryName)
 324
 325
 326 class QuickJump(object):
 327
 328         MINIMAL_ENTRY = 3
 329
 330         def __init__(self, parent, app):
 331                 self._app = app
 332
 333                 self._searchLabel = QtGui.QLabel("Search:")
 334                 self._searchEntry = QtGui.QLineEdit("")
 335                 self._searchEntry.textEdited.connect(self._on_search_edited)
 336
 337                 self._entryLayout = QtGui.QHBoxLayout()
 338                 self._entryLayout.addWidget(self._searchLabel)
 339                 self._entryLayout.addWidget(self._searchEntry)
 340
 341                 self._resultsBox = QtGui.QTreeWidget()
 342                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 343                 self._resultsBox.setHeaderHidden(True)
 344                 self._resultsBox.setAlternatingRowColors(True)
 345                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 346
 347                 self._layout = QtGui.QVBoxLayout()
 348                 self._layout.addLayout(self._entryLayout)
 349                 self._layout.addWidget(self._resultsBox)
 350
 351                 centralWidget = QtGui.QWidget()
 352                 centralWidget.setLayout(self._layout)
 353
 354                 self._window = QtGui.QMainWindow(parent)
 355                 if parent is not None:
 356                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 357                 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
 358                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 359                 self._window.setCentralWidget(centralWidget)
 360
 361                 self._closeWindowAction = QtGui.QAction(None)
 362                 self._closeWindowAction.setText("Window")
 363                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 364                 self._closeWindowAction.triggered.connect(self._on_close_window)
 365
 366                 fileMenu = self._window.menuBar().addMenu("&File")
 367                 fileMenu.addAction(self._closeWindowAction)
 368                 fileMenu.addAction(self._app.quitAction)
 369
 370                 viewMenu = self._window.menuBar().addMenu("&View")
 371                 viewMenu.addAction(self._app.fullscreenAction)
 372
 373                 self._window.addAction(self._app.logAction)
 374
 375                 self._window.show()
 376
 377         def close(self):
 378                 self._window.close()
 379
 380         def set_fullscreen(self, isFullscreen):
 381                 if isFullscreen:
 382                         self._window.showFullScreen()
 383                 else:
 384                         self._window.showNormal()
 385
 386         @misc_utils.log_exception(_moduleLogger)
 387         def _on_close_window(self, checked = True):
 388                 self.close()
 389
 390         @misc_utils.log_exception(_moduleLogger)
 391         def _on_result_clicked(self, item, columnIndex):
 392                 categoryName = unicode(item.text(0))
 393                 unitName = unicode(item.text(1))
 394                 catWindow = self._app.request_category()
 395                 unitsWindow = catWindow.select_category(categoryName)
 396                 unitsWindow.select_unit(unitName)
 397                 self.close()
 398
 399         @misc_utils.log_exception(_moduleLogger)
 400         def _on_search_edited(self, *args):
 401                 userInput = self._searchEntry.text()
 402                 if len(userInput) <  self.MINIMAL_ENTRY:
 403                         return
 404
 405                 self._resultsBox.clear()
 406                 lowerInput = str(userInput).lower()
 407                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 408                         units = unit_data.get_units(category)
 409                         for unitIndex, unit in enumerate(units):
 410                                 loweredUnit = unit.lower()
 411                                 if lowerInput in loweredUnit:
 412                                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 413                                         twi.setText(0, category)
 414                                         twi.setText(1, unit)
 415
 416
 417 class Recent(object):
 418
 419         def __init__(self, parent, app):
 420                 self._app = app
 421
 422                 self._resultsBox = QtGui.QTreeWidget()
 423                 self._resultsBox.setHeaderLabels(["Categories", "Units"])
 424                 self._resultsBox.setHeaderHidden(True)
 425                 self._resultsBox.setAlternatingRowColors(True)
 426                 self._resultsBox.itemClicked.connect(self._on_result_clicked)
 427
 428                 self._layout = QtGui.QVBoxLayout()
 429                 self._layout.addWidget(self._resultsBox)
 430
 431                 centralWidget = QtGui.QWidget()
 432                 centralWidget.setLayout(self._layout)
 433
 434                 self._window = QtGui.QMainWindow(parent)
 435                 if parent is not None:
 436                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 437                 self._window.setWindowTitle("%s - Recent" % constants.__pretty_app_name__)
 438                 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
 439                 self._window.setCentralWidget(centralWidget)
 440
 441                 for cat, unit in self._app.get_recent():
 442                         twi = QtGui.QTreeWidgetItem(self._resultsBox)
 443                         twi.setText(0, cat)
 444                         twi.setText(1, unit)
 445
 446                 self._closeWindowAction = QtGui.QAction(None)
 447                 self._closeWindowAction.setText("Window")
 448                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 449                 self._closeWindowAction.triggered.connect(self._on_close_window)
 450
 451                 fileMenu = self._window.menuBar().addMenu("&File")
 452                 fileMenu.addAction(self._closeWindowAction)
 453                 fileMenu.addAction(self._app.quitAction)
 454
 455                 viewMenu = self._window.menuBar().addMenu("&View")
 456                 viewMenu.addAction(self._app.fullscreenAction)
 457
 458                 self._window.addAction(self._app.logAction)
 459
 460                 self._window.show()
 461
 462         def close(self):
 463                 self._window.close()
 464
 465         def set_fullscreen(self, isFullscreen):
 466                 if isFullscreen:
 467                         self._window.showFullScreen()
 468                 else:
 469                         self._window.showNormal()
 470
 471         @misc_utils.log_exception(_moduleLogger)
 472         def _on_close_window(self, checked = True):
 473                 self.close()
 474
 475         @misc_utils.log_exception(_moduleLogger)
 476         def _on_result_clicked(self, item, columnIndex):
 477                 categoryName = unicode(item.text(0))
 478                 unitName = unicode(item.text(1))
 479                 catWindow = self._app.request_category()
 480                 unitsWindow = catWindow.select_category(categoryName)
 481                 unitsWindow.select_unit(unitName)
 482                 self.close()
 483
 484
 485 class UnitData(object):
 486
 487         HEADERS = ["Name", "Value", "", "Unit"]
 488         ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
 489
 490         def __init__(self, name, unit, description, conversion):
 491                 self._name = name
 492                 self._unit = unit
 493                 self._description = description
 494                 self._conversion = conversion
 495
 496                 self._value = 0.0
 497                 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
 498
 499         @property
 500         def name(self):
 501                 return self._name
 502
 503         @property
 504         def value(self):
 505                 return self._value
 506
 507         def update_value(self, newValue):
 508                 self._value = newValue
 509                 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
 510
 511         @property
 512         def unit(self):
 513                 return self._unit
 514
 515         @property
 516         def conversion(self):
 517                 return self._conversion
 518
 519         def data(self, column):
 520                 try:
 521                         return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
 522                 except IndexError:
 523                         return None
 524
 525
 526 class UnitModel(QtCore.QAbstractItemModel):
 527
 528         def __init__(self, categoryName, parent=None):
 529                 super(UnitModel, self).__init__(parent)
 530                 self._categoryName = categoryName
 531                 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
 532
 533                 self._children = []
 534                 for key in unit_data.get_units(self._categoryName):
 535                         conversion, unit, description = self._unitData[key]
 536                         self._children.append(UnitData(key, unit, description, conversion))
 537                 self._sortSettings = None
 538
 539         @misc_utils.log_exception(_moduleLogger)
 540         def columnCount(self, parent):
 541                 if parent.isValid():
 542                         return 0
 543                 else:
 544                         return len(UnitData.HEADERS)
 545
 546         @misc_utils.log_exception(_moduleLogger)
 547         def data(self, index, role):
 548                 if not index.isValid():
 549                         return None
 550                 elif role == QtCore.Qt.TextAlignmentRole:
 551                         return UnitData.ALIGNMENT[index.column()]
 552                 elif role != QtCore.Qt.DisplayRole:
 553                         return None
 554
 555                 item = index.internalPointer()
 556                 if isinstance(item, UnitData):
 557                         return item.data(index.column())
 558                 elif item is UnitData.HEADERS:
 559                         return item[index.column()]
 560
 561         @misc_utils.log_exception(_moduleLogger)
 562         def sort(self, column, order = QtCore.Qt.AscendingOrder):
 563                 self._sortSettings = column, order
 564                 isReverse = order == QtCore.Qt.AscendingOrder
 565                 if column == 0:
 566                         key_func = lambda item: item.name
 567                 elif column in [1, 2]:
 568                         key_func = lambda item: item.value
 569                 elif column == 3:
 570                         key_func = lambda item: item.unit
 571                 self._children.sort(key=key_func, reverse = isReverse)
 572
 573                 self._all_changed()
 574
 575         @misc_utils.log_exception(_moduleLogger)
 576         def flags(self, index):
 577                 if not index.isValid():
 578                         return QtCore.Qt.NoItemFlags
 579
 580                 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
 581
 582         @misc_utils.log_exception(_moduleLogger)
 583         def headerData(self, section, orientation, role):
 584                 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
 585                         return UnitData.HEADERS[section]
 586
 587                 return None
 588
 589         @misc_utils.log_exception(_moduleLogger)
 590         def index(self, row, column, parent):
 591                 if not self.hasIndex(row, column, parent):
 592                         return QtCore.QModelIndex()
 593
 594                 if parent.isValid():
 595                         return QtCore.QModelIndex()
 596
 597                 parentItem = UnitData.HEADERS
 598                 childItem = self._children[row]
 599                 if childItem:
 600                         return self.createIndex(row, column, childItem)
 601                 else:
 602                         return QtCore.QModelIndex()
 603
 604         @misc_utils.log_exception(_moduleLogger)
 605         def parent(self, index):
 606                 if not index.isValid():
 607                         return QtCore.QModelIndex()
 608
 609                 childItem = index.internalPointer()
 610                 if isinstance(childItem, UnitData):
 611                         return QtCore.QModelIndex()
 612                 elif childItem is UnitData.HEADERS:
 613                         return None
 614
 615         @misc_utils.log_exception(_moduleLogger)
 616         def rowCount(self, parent):
 617                 if 0 < parent.column():
 618                         return 0
 619
 620                 if not parent.isValid():
 621                         return len(self._children)
 622                 else:
 623                         return len(self._children)
 624
 625         def get_unit(self, index):
 626                 return self._children[index]
 627
 628         def index_unit(self, unitName):
 629                 for i, child in enumerate(self._children):
 630                         if child.name == unitName:
 631                                 return i
 632                 else:
 633                         raise RuntimeError("Unit not found")
 634
 635         def update_values(self, fromIndex, userInput):
 636                 value = self._sanitize_value(userInput)
 637                 func, arg = self._children[fromIndex].conversion
 638                 base = func.to_base(value, arg)
 639                 for i, child in enumerate(self._children):
 640                         if i == fromIndex:
 641                                 continue
 642                         func, arg = child.conversion
 643                         newValue = func.from_base(base, arg)
 644                         child.update_value(newValue)
 645
 646                 if self._sortSettings is not None:
 647                         self.sort(*self._sortSettings)
 648                 self._all_changed()
 649
 650         def _all_changed(self):
 651                 topLeft = self.createIndex(0, 0, self._children[0])
 652                 bottomRight = self.createIndex(len(self._children)-1, len(UnitData.HEADERS)-1, self._children[-1])
 653                 self.dataChanged.emit(topLeft, bottomRight)
 654
 655         def _sanitize_value(self, userEntry):
 656                 if self._categoryName == "Computer Numbers":
 657                         if userEntry == '':
 658                                 value = '0'
 659                         else:
 660                                 value = userEntry
 661                 else:
 662                         if userEntry == '':
 663                                 value = 0.0
 664                         else:
 665                                 value = float(userEntry)
 666                 return value
 667
 668
 669 class UnitWindow(object):
 670
 671         def __init__(self, parent, category, app):
 672                 self._app = app
 673                 self._categoryName = category
 674                 self._selectedIndex = 0
 675
 676                 self._selectedUnitName = QtGui.QLabel()
 677                 self._selectedUnitValue = QtGui.QLineEdit()
 678                 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
 679                 self._selectedUnitSymbol = QtGui.QLabel()
 680
 681                 self._selectedUnitLayout = QtGui.QHBoxLayout()
 682                 self._selectedUnitLayout.addWidget(self._selectedUnitName)
 683                 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
 684                 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
 685
 686                 self._unitsModel = UnitModel(self._categoryName)
 687                 self._unitsView = QtGui.QTreeView()
 688                 self._unitsView.setModel(self._unitsModel)
 689                 self._unitsView.clicked.connect(self._on_unit_clicked)
 690                 self._unitsView.setUniformRowHeights(True)
 691                 self._unitsView.header().setSortIndicatorShown(True)
 692                 self._unitsView.header().setClickable(True)
 693                 self._unitsView.setSortingEnabled(True)
 694                 self._unitsView.setAlternatingRowColors(True)
 695                 if True:
 696                         self._unitsView.setHeaderHidden(True)
 697
 698                 self._layout = QtGui.QVBoxLayout()
 699                 self._layout.addLayout(self._selectedUnitLayout)
 700                 self._layout.addWidget(self._unitsView)
 701
 702                 centralWidget = QtGui.QWidget()
 703                 centralWidget.setLayout(self._layout)
 704
 705                 self._window = QtGui.QMainWindow(parent)
 706                 if parent is not None:
 707                         self._window.setWindowModality(QtCore.Qt.WindowModal)
 708                 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
 709                 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
 710                 self._window.setCentralWidget(centralWidget)
 711
 712                 defaultUnitName = self._app.get_recent_unit(self._categoryName)
 713                 if defaultUnitName:
 714                         self.select_unit(defaultUnitName)
 715                 else:
 716                         self._select_unit(0)
 717                 self._unitsModel.sort(1)
 718
 719                 self._sortActionGroup = QtGui.QActionGroup(None)
 720                 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
 721                 self._sortByNameAction.setText("Sort By Name")
 722                 self._sortByNameAction.setStatusTip("Sort the units by name")
 723                 self._sortByNameAction.setToolTip("Sort the units by name")
 724                 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
 725                 self._sortByValueAction.setText("Sort By Value")
 726                 self._sortByValueAction.setStatusTip("Sort the units by value")
 727                 self._sortByValueAction.setToolTip("Sort the units by value")
 728                 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
 729                 self._sortByUnitAction.setText("Sort By Unit")
 730                 self._sortByUnitAction.setStatusTip("Sort the units by unit")
 731                 self._sortByUnitAction.setToolTip("Sort the units by unit")
 732
 733                 self._sortByValueAction.setChecked(True)
 734
 735                 self._closeWindowAction = QtGui.QAction(None)
 736                 self._closeWindowAction.setText("Close Window")
 737                 self._closeWindowAction.setShortcut(QtGui.QKeySequence("CTRL+w"))
 738                 self._closeWindowAction.triggered.connect(self._on_close_window)
 739
 740                 fileMenu = self._window.menuBar().addMenu("&File")
 741                 fileMenu.addAction(self._closeWindowAction)
 742                 fileMenu.addAction(self._app.quitAction)
 743
 744                 viewMenu = self._window.menuBar().addMenu("&View")
 745                 viewMenu.addAction(self._app.fullscreenAction)
 746                 viewMenu.addSeparator()
 747                 viewMenu.addAction(self._app.jumpAction)
 748                 viewMenu.addAction(self._app.recentAction)
 749                 viewMenu.addSeparator()
 750                 viewMenu.addAction(self._sortByNameAction)
 751                 viewMenu.addAction(self._sortByValueAction)
 752                 viewMenu.addAction(self._sortByUnitAction)
 753
 754                 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
 755                 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
 756                 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
 757
 758                 self._window.addAction(self._app.logAction)
 759
 760                 self._window.show()
 761
 762         def close(self):
 763                 self._window.close()
 764
 765         def set_fullscreen(self, isFullscreen):
 766                 if isFullscreen:
 767                         self._window.showFullScreen()
 768                 else:
 769                         self._window.showNormal()
 770
 771         def select_unit(self, unitName):
 772                 index = self._unitsModel.index_unit(unitName)
 773                 self._select_unit(index)
 774
 775         @misc_utils.log_exception(_moduleLogger)
 776         def _on_close_window(self, checked = True):
 777                 self.close()
 778
 779         @misc_utils.log_exception(_moduleLogger)
 780         def _on_sort_by_name(self, checked = False):
 781                 self._unitsModel.sort(0, QtCore.Qt.DescendingOrder)
 782
 783         @misc_utils.log_exception(_moduleLogger)
 784         def _on_sort_by_value(self, checked = False):
 785                 self._unitsModel.sort(1)
 786
 787         @misc_utils.log_exception(_moduleLogger)
 788         def _on_sort_by_unit(self, checked = False):
 789                 self._unitsModel.sort(3, QtCore.Qt.DescendingOrder)
 790
 791         @misc_utils.log_exception(_moduleLogger)
 792         def _on_unit_clicked(self, index):
 793                 self._select_unit(index.row())
 794
 795         @misc_utils.log_exception(_moduleLogger)
 796         def _on_value_edited(self, *args):
 797                 userInput = self._selectedUnitValue.text()
 798                 self._unitsModel.update_values(self._selectedIndex, str(userInput))
 799
 800         def _select_unit(self, index):
 801                 unit = self._unitsModel.get_unit(index)
 802                 self._selectedUnitName.setText(unit.name)
 803                 self._selectedUnitValue.setText(str(unit.value))
 804                 self._selectedUnitSymbol.setText(unit.unit)
 805
 806                 self._selectedIndex = index
 807                 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
 808                 self._unitsView.scrollTo(qindex)
 809                 self._app.add_recent(self._categoryName, self._unitsModel.get_unit(index).name)
 810
 811
 812 def run_gonvert():
 813         app = QtGui.QApplication([])
 814         handle = Gonvert(app)
 815         return app.exec_()
 816
 817
 818 if __name__ == "__main__":
 819         logging.basicConfig(level = logging.DEBUG)
 820         try:
 821                 os.makedirs(constants._data_path_)
 822         except OSError, e:
 823                 if e.errno != 17:
 824                         raise
 825
 826         val = run_gonvert()
 827         sys.exit(val)