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

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