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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import os
   7 import math
   8 import pickle
   9 import logging
  10
  11 import pango
  12 import gobject
  13 import gtk
  14 import gtk.glade
  15 import gtk.gdk
  16
  17 import constants
  18 import hildonize
  19 import gtk_toolbox
  20 import unit_data
  21
  22 try:
  23         import gettext
  24 except ImportError:
  25         _ = lambda x: x
  26         gettext = None
  27 else:
  28         _ = gettext.gettext
  29
  30
  31 _moduleLogger = logging.getLogger("gonvert_glade")
  32
  33 if gettext is not None:
  34         gettext.bindtextdomain('gonvert', '/usr/share/locale')
  35         gettext.textdomain('gonvert')
  36
  37
  38 def change_menu_label(widgets, labelname, newtext):
  39         item_label = widgets.get_widget(labelname).get_children()[0]
  40         item_label.set_text(newtext)
  41
  42
  43 def split_number(number):
  44         try:
  45                 fractional, integer = math.modf(number)
  46         except TypeError:
  47                 integerDisplay = number
  48                 fractionalDisplay = ""
  49         else:
  50                 integerDisplay = str(integer)
  51                 fractionalDisplay = str(fractional)
  52                 if "e+" in integerDisplay:
  53                         integerDisplay = number
  54                         fractionalDisplay = ""
  55                 elif "e-" in fractionalDisplay and 0.0 < integer:
  56                         integerDisplay = number
  57                         fractionalDisplay = ""
  58                 elif "e-" in fractionalDisplay:
  59                         integerDisplay = ""
  60                         fractionalDisplay = number
  61                 else:
  62                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  63                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  64
  65         return integerDisplay, fractionalDisplay
  66
  67
  68 class Gonvert(object):
  69
  70         _glade_files = [
  71                 os.path.join(os.path.dirname(__file__), "gonvert.glade"),
  72                 os.path.join(os.path.dirname(__file__), "../data/gonvert.glade"),
  73                 os.path.join(os.path.dirname(__file__), "../lib/gonvert.glade"),
  74                 '/usr/share/gonvert/gonvert.glade',
  75                 '/usr/lib/gonvert/gonvert.glade',
  76         ]
  77
  78         UNITS_NAME_IDX = 0
  79         UNITS_VALUE_IDX = 1
  80         UNITS_SYMBOL_IDX = 2
  81         UNITS_INTEGER_IDX = 3
  82         UNITS_FRACTION_IDX = 4
  83
  84         def __init__(self):
  85                 self._unitDataInCategory = None
  86                 self._unit_sort_direction = False
  87                 self._value_sort_direction = False
  88                 self._units_sort_direction = False
  89                 self._isFullScreen = False
  90                 self._clipboard = gtk.clipboard_get()
  91
  92                 self._find_result = [] # empty find result list
  93                 self._findIndex = 0 # default to find result number zero
  94
  95                 self._selectedCategoryName = '' # preset to no selected category
  96                 self._defaultUnitForCategory = {} # empty dictionary for later use
  97
  98                 #check to see if glade file is in current directory (user must be
  99                 # running from download untar directory)
 100                 for gladePath in self._glade_files:
 101                         if os.path.isfile(gladePath):
 102                                 homepath = os.path.dirname(gladePath)
 103                                 pixmapspath = "/".join((homepath, "pixmaps"))
 104                                 widgets = gtk.glade.XML(gladePath)
 105                                 break
 106                 else:
 107                         _moduleLogger.error("UI Descriptor not found!")
 108                         gtk.main_quit()
 109                         return
 110
 111                 self._mainWindow = widgets.get_widget('mainWindow')
 112                 self._app = hildonize.get_app_class()()
 113                 self._mainWindow = hildonize.hildonize_window(self._app, self._mainWindow)
 114
 115                 change_menu_label(widgets, 'fileMenuItem', _('File'))
 116                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
 117                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
 118                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
 119                 change_menu_label(widgets, 'findButton', _('Find'))
 120
 121                 self._categorySelectionButton = widgets.get_widget("categorySelectionButton")
 122                 self._categoryView = widgets.get_widget('categoryView')
 123
 124                 self._unitsView = widgets.get_widget('unitsView')
 125                 self._unitsView.set_property('rules_hint', 1)
 126                 self._unitsView_selection = self._unitsView.get_selection()
 127
 128                 self._unitName = widgets.get_widget('unitName')
 129                 self._unitValue = widgets.get_widget('unitValue')
 130                 self._previousUnitName = widgets.get_widget('previousUnitName')
 131                 self._previousUnitValue = widgets.get_widget('previousUnitValue')
 132
 133                 self._unitSymbol = widgets.get_widget('unitSymbol')
 134                 self._previousUnitSymbol = widgets.get_widget('previousUnitSymbol')
 135
 136                 self._unitDescription = widgets.get_widget('unitDescription')
 137
 138                 self._searchLayout = widgets.get_widget('searchLayout')
 139                 self._searchLayout.hide()
 140                 self._findEntry = widgets.get_widget('findEntry')
 141                 self._findLabel = widgets.get_widget('findLabel')
 142                 self._findButton = widgets.get_widget('findButton')
 143
 144                 self._unitsNameRenderer = gtk.CellRendererText()
 145                 self._unitsNameRenderer.set_property("scale", 0.75)
 146                 if constants.FORCE_HILDON_LIKE:
 147                         self._unitsNameRenderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 148                         self._unitsNameRenderer.set_property("width-chars", 5)
 149                 self._unitNameColumn = gtk.TreeViewColumn(_('Name'), self._unitsNameRenderer)
 150                 self._unitNameColumn.set_property('resizable', True)
 151                 self._unitNameColumn.add_attribute(self._unitsNameRenderer, 'text', self.UNITS_NAME_IDX)
 152                 self._unitNameColumn.set_clickable(True)
 153                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 154                 self._unitsView.append_column(self._unitNameColumn)
 155
 156                 renderer = gtk.CellRendererText()
 157                 renderer.set_property("xalign", 1.0)
 158                 renderer.set_property("alignment", pango.ALIGN_RIGHT)
 159                 hildonize.set_cell_thumb_selectable(renderer)
 160                 self._unitIntegerColumn = gtk.TreeViewColumn(_('Value'), renderer)
 161                 self._unitIntegerColumn.set_property('resizable', True)
 162                 self._unitIntegerColumn.add_attribute(renderer, 'text', self.UNITS_INTEGER_IDX)
 163                 self._unitIntegerColumn.set_clickable(True)
 164                 self._unitIntegerColumn.connect("clicked", self._on_click_unit_column)
 165                 self._unitsView.append_column(self._unitIntegerColumn)
 166
 167                 renderer = gtk.CellRendererText()
 168                 renderer.set_property("xalign", 0.0)
 169                 renderer.set_property("alignment", pango.ALIGN_LEFT)
 170                 renderer.set_property("scale", 0.75)
 171                 self._unitFractionalColumn = gtk.TreeViewColumn(_(''), renderer)
 172                 self._unitFractionalColumn.set_property('resizable', True)
 173                 self._unitFractionalColumn.add_attribute(renderer, 'text', self.UNITS_FRACTION_IDX)
 174                 self._unitFractionalColumn.set_clickable(True)
 175                 self._unitFractionalColumn.connect("clicked", self._on_click_unit_column)
 176                 self._unitsView.append_column(self._unitFractionalColumn)
 177
 178                 renderer = gtk.CellRendererText()
 179                 renderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 180                 #renderer.set_property("scale", 0.5)
 181                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 182                 self._unitSymbolColumn.set_property('resizable', True)
 183                 self._unitSymbolColumn.add_attribute(renderer, 'text', self.UNITS_SYMBOL_IDX)
 184                 self._unitSymbolColumn.set_clickable(True)
 185                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 186                 self._unitsView.append_column(self._unitSymbolColumn)
 187
 188                 self._unitModel = gtk.ListStore(
 189                         gobject.TYPE_STRING, # UNITS_NAME_IDX
 190                         gobject.TYPE_STRING, # UNITS_VALUE_IDX
 191                         gobject.TYPE_STRING, # UNITS_SYMBOL_IDX
 192                         gobject.TYPE_STRING, # UNITS_INTEGER_IDX
 193                         gobject.TYPE_STRING, # UNITS_FRACTION_IDX
 194                 )
 195                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 196                 columns = self._get_column_sort_stuff()
 197                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 198                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 199                 self._unitsView.set_model(self._sortedUnitModel)
 200
 201                 #Insert a column into the category list even though the heading will not be seen
 202                 renderer = gtk.CellRendererText()
 203                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 204                 self._categoryColumn.set_property('resizable', 1)
 205                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 206                 self._categoryView.append_column(self._categoryColumn)
 207
 208                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 209                 self._categoryView.set_model(self._categoryModel)
 210                 #colourize each row differently for easier reading
 211                 self._categoryView.set_property('rules_hint', 1)
 212
 213                 #Populate the catagories list
 214                 for key in unit_data.UNIT_CATEGORIES:
 215                         row = (key, )
 216                         self._categoryModel.append(row)
 217
 218                 #--------- connections to GUI ----------------
 219                 self._mainWindow.connect("delete-event", self._on_user_exit)
 220                 self._mainWindow.connect("key-press-event", self._on_key_press)
 221                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 222                 self._categorySelectionButton.connect("clicked", self._on_category_selector_clicked)
 223                 self._categoryView.connect("cursor-changed", self._on_click_category)
 224                 self._findButton.connect("clicked", self._on_find_activate)
 225                 self._findEntry.connect("activate", self._on_find_activate)
 226                 self._findEntry.connect("changed", self._on_findEntry_changed)
 227                 self._previousUnitValue.connect("changed", self._on_previous_unit_value_changed)
 228                 self._unitValue.connect("changed", self._on_unit_value_changed)
 229                 self._unitValue.connect("key-press-event", self._on_browse_key_press)
 230                 self._unitsView.connect("cursor-changed", self._on_click_unit)
 231                 self._unitsView.connect("key-press-event", self._on_browse_key_press)
 232                 if hildonize.GTK_MENU_USED:
 233                         widgets.get_widget("aboutMenuItem").connect("activate", self._on_about_clicked)
 234                         widgets.get_widget("exitMenuItem").connect("activate", self._on_user_exit)
 235
 236                 for scrollingWidgetName in (
 237                         "unitsViewScrolledWindow",
 238                 ):
 239                         scrollingWidget = widgets.get_widget(scrollingWidgetName)
 240                         assert scrollingWidget is not None, scrollingWidgetName
 241                         hildonize.hildonize_scrollwindow_with_viewport(scrollingWidget)
 242
 243                 if hildonize.IS_HILDON_SUPPORTED or constants.FORCE_HILDON_LIKE:
 244                         self._categoryView.get_parent().hide()
 245                         self._unitsView.set_headers_visible(False)
 246                         self._previousUnitName.get_parent().hide()
 247                         self._unitDescription.get_parent().get_parent().hide()
 248                 else:
 249                         self._categorySelectionButton.hide()
 250
 251                 menu = hildonize.hildonize_menu(
 252                         self._mainWindow,
 253                         widgets.get_widget("mainMenuBar"),
 254                 )
 255
 256                 if not hildonize.IS_HILDON_SUPPORTED:
 257                         _moduleLogger.info("No hildonization support")
 258
 259                 hildonize.set_application_title(
 260                         self._mainWindow, "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 261                 )
 262                 iconPath = pixmapspath + '/gonvert.png'
 263                 if os.path.exists(iconPath):
 264                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 265                 else:
 266                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 267
 268                 self._load_settings()
 269                 self._mainWindow.show()
 270
 271         def _load_settings(self):
 272                 #Restore window size from previously saved settings if it exists and is valid.
 273                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 274                 if os.path.exists(windowDatPath):
 275                         saved_window = pickle.load(open(windowDatPath, "r"))
 276                         try:
 277                                 a, b = saved_window['size']
 278                         except KeyError:
 279                                 pass
 280                         else:
 281                                 self._mainWindow.resize(a, b)
 282
 283                 #Restore selections from previously saved settings if it exists and is valid.
 284                 categoryIndex = 0
 285                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 286                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 287                 if os.path.exists(selectionsDatPath):
 288                         selections = pickle.load(open(selectionsDatPath, 'r'))
 289                         try:
 290                                 self._defaultUnitForCategory = selections['selected_units']
 291                         except KeyError:
 292                                 pass
 293
 294                         try:
 295                                 selectedCategoryName = selections['selected_category']
 296                         except KeyError:
 297                                 pass
 298                         else:
 299                                 try:
 300                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 301                                 except ValueError:
 302                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 303
 304                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 305                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 306                 self._categoryView.grab_focus()
 307
 308                 self._select_default_unit()
 309
 310         def _save_settings(self):
 311                 """
 312                 This routine saves the selections to a file, and
 313                 should therefore only be called when exiting the program.
 314
 315                 Update selections dictionary which consists of the following keys:
 316                 'self._selectedCategoryName': full name of selected category
 317                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 318                 [categoryname: #1 displayed unit, #2 displayed unit]
 319                 """
 320                 #Determine the contents of the selected category row
 321                 selected, iter = self._categoryView.get_selection().get_selected()
 322                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 323
 324                 selections = {
 325                         'selected_category': self._selectedCategoryName,
 326                         'selected_units': self._defaultUnitForCategory
 327                 }
 328                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 329                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 330
 331                 #Get last size of app and save it
 332                 window_settings = {
 333                         'size': self._mainWindow.get_size()
 334                 }
 335                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 336                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 337
 338         def _refresh_columns(self):
 339                 self._unitsView.remove_column(self._unitNameColumn)
 340                 self._unitsView.remove_column(self._unitIntegerColumn)
 341                 self._unitsView.remove_column(self._unitFractionalColumn)
 342                 self._unitsView.remove_column(self._unitSymbolColumn)
 343
 344                 self._unitsView.append_column(self._unitNameColumn)
 345                 self._unitsView.append_column(self._unitIntegerColumn)
 346                 self._unitsView.append_column(self._unitFractionalColumn)
 347                 self._unitsView.append_column(self._unitSymbolColumn)
 348
 349         def _clear_find(self):
 350                 # switch to "new find" state
 351                 self._find_result = []
 352                 self._findIndex = 0
 353
 354                 # Clear our user message
 355                 self._findLabel.set_text('')
 356
 357         def _find_first(self):
 358                 assert len(self._find_result) == 0
 359                 assert self._findIndex == 0
 360                 findString = self._findEntry.get_text().strip().lower()
 361                 if not findString:
 362                         return
 363
 364                 # Gather info on all the matching units from all categories
 365                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 366                         units = unit_data.get_units(category)
 367                         for unitIndex, unit in enumerate(units):
 368                                 loweredUnit = unit.lower()
 369                                 if loweredUnit in findString or findString in loweredUnit:
 370                                         self._find_result.append((category, unit, catIndex, unitIndex))
 371
 372         def _update_find_selection(self):
 373                 assert 0 < len(self._find_result)
 374
 375                 #check if next find is in a new category (prevent category changes when unnecessary
 376                 searchCategoryName = self._find_result[self._findIndex][0]
 377                 if self._selectedCategoryName != searchCategoryName:
 378                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % searchCategoryName)
 379                         self._categoryView.set_cursor(
 380                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 381                         )
 382
 383                 self._unitsView.set_cursor(
 384                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 385                 )
 386
 387         def _find_next(self):
 388                 if len(self._find_result) == 0:
 389                         self._find_first()
 390                 else:
 391                         if self._findIndex == len(self._find_result)-1:
 392                                 self._findIndex = 0
 393                         else:
 394                                 self._findIndex += 1
 395
 396                 if not self._find_result:
 397                         self._findLabel.set_text('Text not found')
 398                 else:
 399                         self._update_find_selection()
 400                         resultsLeft = len(self._find_result) - self._findIndex - 1
 401                         self._findLabel.set_text(
 402                                 '%s result(s) left' % (resultsLeft, )
 403                         )
 404
 405         def _find_previous(self):
 406                 if len(self._find_result) == 0:
 407                         self._find_first()
 408                 else:
 409                         if self._findIndex == 0:
 410                                 self._findIndex = len(self._find_result)-1
 411                         else:
 412                                 self._findIndex -= 1
 413
 414                 if not self._find_result:
 415                         self._findLabel.set_text('Text not found')
 416                 else:
 417                         self._update_find_selection()
 418                         resultsLeft = len(self._find_result) - self._findIndex - 1
 419                         self._findLabel.set_text(
 420                                 '%s result(s) left' % (resultsLeft, )
 421                         )
 422
 423         def _toggle_find(self):
 424                 if self._searchLayout.get_property("visible"):
 425                         self._searchLayout.hide()
 426                         self._unitsView.grab_focus()
 427                 else:
 428                         self._searchLayout.show()
 429                         self._findEntry.grab_focus()
 430
 431         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 432                 leftUnitText = self._unitModel.get_value(leftItr, self.UNITS_NAME_IDX)
 433                 rightUnitText = self._unitModel.get_value(rightItr, self.UNITS_NAME_IDX)
 434                 return cmp(leftUnitText, rightUnitText)
 435
 436         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 437                 leftSymbolText = self._unitModel.get_value(leftItr, self.UNITS_SYMBOL_IDX)
 438                 rightSymbolText = self._unitModel.get_value(rightItr, self.UNITS_SYMBOL_IDX)
 439                 return cmp(leftSymbolText, rightSymbolText)
 440
 441         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 442                 #special sorting exceptions for ascii values (instead of float values)
 443                 if self._selectedCategoryName == "Computer Numbers":
 444                         leftValue = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 445                         rightValue = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 446                 else:
 447                         leftValueText = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 448                         leftValue = float(leftValueText) if leftValueText else 0.0
 449
 450                         rightValueText = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 451                         rightValue = float(rightValueText) if rightValueText else 0.0
 452                 return cmp(leftValue, rightValue)
 453
 454         def _get_column_sort_stuff(self):
 455                 columns = (
 456                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 457                         (self._unitIntegerColumn, "_value_sort_direction", self._value_model_cmp),
 458                         (self._unitFractionalColumn, "_value_sort_direction", self._value_model_cmp),
 459                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 460                 )
 461                 return columns
 462
 463         def _switch_category(self, category):
 464                 self._selectedCategoryName = category
 465                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 466
 467                 #Fill up the units descriptions and clear the value cells
 468                 self._clear_visible_unit_data()
 469                 nameLength = 0
 470                 for key in unit_data.get_units(self._selectedCategoryName):
 471                         row = key, '0.0', self._unitDataInCategory[key][1], '0.', '0'
 472                         self._unitModel.append(row)
 473                         nameLength = max(nameLength, len(key))
 474                 self._sortedUnitModel.sort_column_changed()
 475
 476                 if constants.FORCE_HILDON_LIKE:
 477                         maxCatCharWidth = int(nameLength * 0.75)
 478                         maxCharWidth = int(len("nibble | hexit | quadbit") * 0.75)
 479                         charWidth = min(maxCatCharWidth, maxCharWidth)
 480                         self._unitsNameRenderer.set_property("width-chars", charWidth)
 481
 482                 self._select_default_unit()
 483
 484         def _clear_visible_unit_data(self):
 485                 self._unitDescription.get_buffer().set_text("")
 486                 self._unitName.set_text('')
 487                 self._unitValue.set_text('')
 488                 self._unitSymbol.set_text('')
 489
 490                 self._previousUnitName.set_text('')
 491                 self._previousUnitValue.set_text('')
 492                 self._previousUnitSymbol.set_text('')
 493
 494                 self._unitModel.clear()
 495
 496         def _select_default_unit(self):
 497                 # Restore the previous historical settings of previously selected units
 498                 # in this newly selected category
 499                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 500                 defaultSecondary = ""
 501                 if self._selectedCategoryName in self._defaultUnitForCategory:
 502                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 503                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 504                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 505                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 506
 507                 units = unit_data.get_units(self._selectedCategoryName)
 508
 509                 #Restore oldest selection first.
 510                 if defaultPrimary:
 511                         try:
 512                                 unitIndex = units.index(defaultPrimary)
 513                         except ValueError:
 514                                 unitIndex = 0
 515                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 516
 517                 #Restore newest selection second.
 518                 if defaultSecondary:
 519                         try:
 520                                 unitIndex = units.index(defaultSecondary)
 521                         except ValueError:
 522                                 unitIndex = 0
 523                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 524
 525                 # select the text so user can start typing right away
 526                 self._unitValue.grab_focus()
 527                 self._unitValue.select_region(0, -1)
 528
 529         def _sanitize_value(self, userEntry):
 530                 if self._selectedCategoryName == "Computer Numbers":
 531                         if userEntry == '':
 532                                 value = '0'
 533                         else:
 534                                 value = userEntry
 535                 else:
 536                         if userEntry == '':
 537                                 value = 0.0
 538                         else:
 539                                 value = float(userEntry)
 540                 return value
 541
 542         @gtk_toolbox.log_exception(_moduleLogger)
 543         def _on_key_press(self, widget, event, *args):
 544                 """
 545                 @note Hildon specific
 546                 """
 547                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 548                 if (
 549                         event.keyval == gtk.keysyms.F6 or
 550                         event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 551                 ):
 552                         if self._isFullScreen:
 553                                 self._mainWindow.unfullscreen()
 554                         else:
 555                                 self._mainWindow.fullscreen()
 556                 elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 557                         self._toggle_find()
 558                 elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 559                         self._find_previous()
 560                 elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 561                         self._find_next()
 562                 elif event.keyval == ord("l") and event.get_state() & gtk.gdk.CONTROL_MASK:
 563                         with open(constants._user_logpath_, "r") as f:
 564                                 logLines = f.xreadlines()
 565                                 log = "".join(logLines)
 566                                 self._clipboard.set_text(str(log))
 567
 568         @gtk_toolbox.log_exception(_moduleLogger)
 569         def _on_browse_key_press(self, widget, event, *args):
 570                 if event.keyval == gtk.keysyms.uparrow or event.keyval == gtk.keysyms.Up:
 571                         index, column = self._unitsView.get_cursor()
 572                         newIndex = max(index[0]-1, 0)
 573                         self._unitsView.set_cursor((newIndex, ), column, True)
 574                         return True # override default behavior
 575                 elif event.keyval == gtk.keysyms.downarrow or event.keyval == gtk.keysyms.Down:
 576                         index, column = self._unitsView.get_cursor()
 577                         newIndex = min(index[0]+1, len(self._unitModel)-1)
 578                         self._unitsView.set_cursor((newIndex, ), column, True)
 579                         return True # override default behavior
 580
 581         @gtk_toolbox.log_exception(_moduleLogger)
 582         def _on_window_state_change(self, widget, event, *args):
 583                 """
 584                 @note Hildon specific
 585                 """
 586                 if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 587                         self._isFullScreen = True
 588                 else:
 589                         self._isFullScreen = False
 590
 591         @gtk_toolbox.log_exception(_moduleLogger)
 592         def _on_findEntry_changed(self, *args):
 593                 """
 594                 Clear out find results since the user wants to look for something new
 595                 """
 596                 self._clear_find()
 597
 598         @gtk_toolbox.log_exception(_moduleLogger)
 599         def _on_find_activate(self, *args):
 600                 self._find_next()
 601                 self._findButton.grab_focus()
 602
 603         @gtk_toolbox.log_exception(_moduleLogger)
 604         def _on_click_unit_column(self, col):
 605                 """
 606                 Sort the contents of the col when the user clicks on the title.
 607                 """
 608                 #Determine which column requires sorting
 609                 columns = self._get_column_sort_stuff()
 610                 for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 611                         if col is maybeCol:
 612                                 direction = getattr(self, directionName)
 613                                 gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 614
 615                                 # cause a sort
 616                                 self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 617
 618                                 # set the visual for sorting
 619                                 col.set_sort_indicator(True)
 620                                 col.set_sort_order(not direction)
 621
 622                                 setattr(self, directionName, not direction)
 623                                 break
 624                         else:
 625                                 maybeCol.set_sort_indicator(False)
 626                 else:
 627                         assert False, "Unknown column: %s" % (col.get_title(), )
 628
 629         @gtk_toolbox.log_exception(_moduleLogger)
 630         def _on_category_selector_clicked(self, *args):
 631                 currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 632                 newIndex = hildonize.touch_selector(
 633                         self._mainWindow,
 634                         "Categories",
 635                         unit_data.UNIT_CATEGORIES,
 636                         currenntIndex,
 637                 )
 638
 639                 selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 640                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 641                 self._switch_category(selectedCategoryName)
 642
 643         @gtk_toolbox.log_exception(_moduleLogger)
 644         def _on_click_category(self, *args):
 645                 selected, iter = self._categoryView.get_selection().get_selected()
 646                 if iter is None:
 647                         # User is typing in an invalid string, not selecting any category
 648                         return
 649                 selectedCategory = self._categoryModel.get_value(iter, 0)
 650                 self._switch_category(selectedCategory)
 651
 652         @gtk_toolbox.log_exception(_moduleLogger)
 653         def _on_click_unit(self, *args):
 654                 selected, iter = self._unitsView.get_selection().get_selected()
 655                 selected_unit = selected.get_value(iter, self.UNITS_NAME_IDX)
 656                 unit_spec = self._unitDataInCategory[selected_unit]
 657
 658                 showSymbol = False
 659
 660                 if self._unitName.get_text() != selected_unit:
 661                         self._previousUnitName.set_text(self._unitName.get_text())
 662                         self._previousUnitValue.set_text(self._unitValue.get_text())
 663                         self._previousUnitSymbol.set_text(self._unitSymbol.get_text())
 664                         if self._unitSymbol.get_text():
 665                                 showSymbol = True
 666
 667                 self._unitName.set_text(selected_unit)
 668                 self._unitValue.set_text(selected.get_value(iter, self.UNITS_VALUE_IDX))
 669                 buffer = self._unitDescription.get_buffer()
 670                 buffer.set_text(unit_spec[2])
 671                 self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 672                 if unit_spec[1]:
 673                         showSymbol = True
 674                 else:
 675                         showSymbol = False
 676
 677                 if showSymbol:
 678                         self._unitSymbol.show()
 679                         self._previousUnitSymbol.show()
 680                 else:
 681                         self._unitSymbol.hide()
 682                         self._previousUnitSymbol.hide()
 683
 684                 if self._unitValue.get_text() == '':
 685                         if self._selectedCategoryName == "Computer Numbers":
 686                                 self._unitValue.set_text("0")
 687                         else:
 688                                 self._unitValue.set_text("0.0")
 689
 690                 self._defaultUnitForCategory[self._selectedCategoryName] = [
 691                         self._unitName.get_text(), self._previousUnitName.get_text()
 692                 ]
 693
 694                 # select the text so user can start typing right away
 695                 self._unitValue.grab_focus()
 696                 self._unitValue.select_region(0, -1)
 697
 698         @gtk_toolbox.log_exception(_moduleLogger)
 699         def _on_unit_value_changed(self, *args):
 700                 if self._unitName.get_text() == '':
 701                         return
 702                 if not self._unitValue.is_focus():
 703                         return
 704
 705                 #retrieve the conversion function and value from the selected unit
 706                 value = self._sanitize_value(self._unitValue.get_text())
 707                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 708                 base = func.to_base(value, arg)
 709
 710                 #point to the first row
 711                 for row in self._unitModel:
 712                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 713                         newValue = func.from_base(base, arg)
 714
 715                         newValueDisplay = str(newValue)
 716                         integerDisplay, fractionalDisplay = split_number(newValue)
 717
 718                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 719                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 720                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 721
 722                 # Update the secondary unit entry
 723                 if self._previousUnitName.get_text() != '':
 724                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 725                         self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 726
 727                 self._sortedUnitModel.sort_column_changed()
 728                 self._refresh_columns()
 729
 730         @gtk_toolbox.log_exception(_moduleLogger)
 731         def _on_previous_unit_value_changed(self, *args):
 732                 if self._previousUnitName.get_text() == '':
 733                         return
 734                 if not self._previousUnitValue.is_focus():
 735                         return
 736
 737                 #retrieve the conversion function and value from the selected unit
 738                 value = self._sanitize_value(self._previousUnitValue.get_text())
 739                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 740                 base = func.to_base(value, arg)
 741
 742                 #point to the first row
 743                 for row in self._unitModel:
 744                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 745                         newValue = func.from_base(base, arg)
 746
 747                         newValueDisplay = str(newValue)
 748                         integerDisplay, fractionalDisplay = split_number(newValue)
 749
 750                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 751                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 752                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 753
 754                 # Update the primary unit entry
 755                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 756                 self._unitValue.set_text(str(func.from_base(base, arg, )))
 757
 758                 self._sortedUnitModel.sort_column_changed()
 759                 self._refresh_columns()
 760
 761         @gtk_toolbox.log_exception(_moduleLogger)
 762         def _on_about_clicked(self, a):
 763                 dlg = gtk.AboutDialog()
 764                 dlg.set_name(constants.__pretty_app_name__)
 765                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 766                 dlg.set_copyright("Copyright 2009 - GPL")
 767                 dlg.set_comments("")
 768                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 769                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <eopage@byu.net> (Blame him for the most recent bugs)"])
 770                 dlg.run()
 771                 dlg.destroy()
 772
 773         @gtk_toolbox.log_exception(_moduleLogger)
 774         def _on_user_exit(self, *args):
 775                 try:
 776                         self._save_settings()
 777                 except Exception:
 778                         pass
 779                 finally:
 780                         gtk.main_quit()
 781
 782
 783 def run_gonvert():
 784         gtk.gdk.threads_init()
 785         if hildonize.IS_HILDON_SUPPORTED:
 786                 gtk.set_application_name(constants.__pretty_app_name__)
 787         handle = Gonvert()
 788         if not constants.PROFILE_STARTUP:
 789                 gtk.main()
 790
 791
 792 if __name__ == "__main__":
 793         logging.basicConfig(level = logging.DEBUG)
 794         try:
 795                 os.makedirs(constants._data_path_)
 796         except OSError, e:
 797                 if e.errno != 17:
 798                         raise
 799
 800         run_gonvert()