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