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                 self._clipboard = gtk.clipboard_get()
  90
  91                 self._find_result = [] # empty find result list
  92                 self._findIndex = 0 # default to find result number zero
  93
  94                 self._selectedCategoryName = '' # preset to no selected category
  95                 self._defaultUnitForCategory = {} # empty dictionary for later use
  96
  97                 #check to see if glade file is in current directory (user must be
  98                 # running from download untar directory)
  99                 for gladePath in self._glade_files:
 100                         if os.path.isfile(gladePath):
 101                                 homepath = os.path.dirname(gladePath)
 102                                 pixmapspath = "/".join((homepath, "pixmaps"))
 103                                 widgets = gtk.glade.XML(gladePath)
 104                                 break
 105                 else:
 106                         _moduleLogger.error("UI Descriptor not found!")
 107                         gtk.main_quit()
 108                         return
 109
 110                 self._mainWindow = widgets.get_widget('mainWindow')
 111                 self._app = hildonize.get_app_class()()
 112                 self._mainWindow = hildonize.hildonize_window(self._app, self._mainWindow)
 113
 114                 change_menu_label(widgets, 'fileMenuItem', _('File'))
 115                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
 116                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
 117                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
 118                 change_menu_label(widgets, 'findButton', _('Find'))
 119
 120                 self._categorySelectionButton = widgets.get_widget("categorySelectionButton")
 121                 self._categoryView = widgets.get_widget('categoryView')
 122
 123                 self._unitsView = widgets.get_widget('unitsView')
 124                 self._unitsView.set_property('rules_hint', 1)
 125                 self._unitsView_selection = self._unitsView.get_selection()
 126
 127                 self._unitName = widgets.get_widget('unitName')
 128                 self._unitValue = widgets.get_widget('unitValue')
 129                 self._previousUnitName = widgets.get_widget('previousUnitName')
 130                 self._previousUnitValue = widgets.get_widget('previousUnitValue')
 131
 132                 self._unitSymbol = widgets.get_widget('unitSymbol')
 133                 self._previousUnitSymbol = widgets.get_widget('previousUnitSymbol')
 134
 135                 self._unitDescription = widgets.get_widget('unitDescription')
 136
 137                 self._searchLayout = widgets.get_widget('searchLayout')
 138                 self._searchLayout.hide()
 139                 self._findEntry = widgets.get_widget('findEntry')
 140                 self._findLabel = widgets.get_widget('findLabel')
 141                 self._findButton = widgets.get_widget('findButton')
 142
 143                 self._unitsNameRenderer = gtk.CellRendererText()
 144                 self._unitsNameRenderer.set_property("scale", 0.75)
 145                 if FORCE_HILDON_LIKE:
 146                         self._unitsNameRenderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 147                         self._unitsNameRenderer.set_property("width-chars", 5)
 148                 self._unitNameColumn = gtk.TreeViewColumn(_('Name'), self._unitsNameRenderer)
 149                 self._unitNameColumn.set_property('resizable', True)
 150                 self._unitNameColumn.add_attribute(self._unitsNameRenderer, 'text', self.UNITS_NAME_IDX)
 151                 self._unitNameColumn.set_clickable(True)
 152                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 153                 self._unitsView.append_column(self._unitNameColumn)
 154
 155                 renderer = gtk.CellRendererText()
 156                 renderer.set_property("xalign", 1.0)
 157                 renderer.set_property("alignment", pango.ALIGN_RIGHT)
 158                 hildonize.set_cell_thumb_selectable(renderer)
 159                 self._unitIntegerColumn = gtk.TreeViewColumn(_('Value'), renderer)
 160                 self._unitIntegerColumn.set_property('resizable', True)
 161                 self._unitIntegerColumn.add_attribute(renderer, 'text', self.UNITS_INTEGER_IDX)
 162                 self._unitIntegerColumn.set_clickable(True)
 163                 self._unitIntegerColumn.connect("clicked", self._on_click_unit_column)
 164                 self._unitsView.append_column(self._unitIntegerColumn)
 165
 166                 renderer = gtk.CellRendererText()
 167                 renderer.set_property("xalign", 0.0)
 168                 renderer.set_property("alignment", pango.ALIGN_LEFT)
 169                 renderer.set_property("scale", 0.75)
 170                 self._unitFractionalColumn = gtk.TreeViewColumn(_(''), renderer)
 171                 self._unitFractionalColumn.set_property('resizable', True)
 172                 self._unitFractionalColumn.add_attribute(renderer, 'text', self.UNITS_FRACTION_IDX)
 173                 self._unitFractionalColumn.set_clickable(True)
 174                 self._unitFractionalColumn.connect("clicked", self._on_click_unit_column)
 175                 self._unitsView.append_column(self._unitFractionalColumn)
 176
 177                 renderer = gtk.CellRendererText()
 178                 renderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 179                 #renderer.set_property("scale", 0.5)
 180                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 181                 self._unitSymbolColumn.set_property('resizable', True)
 182                 self._unitSymbolColumn.add_attribute(renderer, 'text', self.UNITS_SYMBOL_IDX)
 183                 self._unitSymbolColumn.set_clickable(True)
 184                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 185                 self._unitsView.append_column(self._unitSymbolColumn)
 186
 187                 self._unitModel = gtk.ListStore(
 188                         gobject.TYPE_STRING, # UNITS_NAME_IDX
 189                         gobject.TYPE_STRING, # UNITS_VALUE_IDX
 190                         gobject.TYPE_STRING, # UNITS_SYMBOL_IDX
 191                         gobject.TYPE_STRING, # UNITS_INTEGER_IDX
 192                         gobject.TYPE_STRING, # UNITS_FRACTION_IDX
 193                 )
 194                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 195                 columns = self._get_column_sort_stuff()
 196                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 197                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 198                 self._unitsView.set_model(self._sortedUnitModel)
 199
 200                 #Insert a column into the category list even though the heading will not be seen
 201                 renderer = gtk.CellRendererText()
 202                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 203                 self._categoryColumn.set_property('resizable', 1)
 204                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 205                 self._categoryView.append_column(self._categoryColumn)
 206
 207                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 208                 self._categoryView.set_model(self._categoryModel)
 209                 #colourize each row differently for easier reading
 210                 self._categoryView.set_property('rules_hint', 1)
 211
 212                 #Populate the catagories list
 213                 for key in unit_data.UNIT_CATEGORIES:
 214                         row = (key, )
 215                         self._categoryModel.append(row)
 216
 217                 #--------- connections to GUI ----------------
 218                 self._mainWindow.connect("delete-event", self._on_user_exit)
 219                 self._mainWindow.connect("key-press-event", self._on_key_press)
 220                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 221                 self._categorySelectionButton.connect("clicked", self._on_category_selector_clicked)
 222                 self._categoryView.connect("cursor-changed", self._on_click_category)
 223                 self._findButton.connect("clicked", self._on_find_activate)
 224                 self._findEntry.connect("activate", self._on_find_activate)
 225                 self._findEntry.connect("changed", self._on_findEntry_changed)
 226                 self._previousUnitValue.connect("changed", self._on_previous_unit_value_changed)
 227                 self._unitValue.connect("changed", self._on_unit_value_changed)
 228                 self._unitsView.connect("cursor-changed", self._on_click_unit)
 229                 if hildonize.GTK_MENU_USED:
 230                         widgets.get_widget("aboutMenuItem").connect("activate", self._on_about_clicked)
 231                         widgets.get_widget("exitMenuItem").connect("activate", self._on_user_exit)
 232
 233                 for scrollingWidgetName in (
 234                         "unitsViewScrolledWindow",
 235                 ):
 236                         scrollingWidget = widgets.get_widget(scrollingWidgetName)
 237                         assert scrollingWidget is not None, scrollingWidgetName
 238                         hildonize.hildonize_scrollwindow_with_viewport(scrollingWidget)
 239
 240                 if hildonize.IS_HILDON_SUPPORTED or FORCE_HILDON_LIKE:
 241                         self._categoryView.get_parent().hide()
 242                         self._unitsView.set_headers_visible(False)
 243                         self._previousUnitName.get_parent().hide()
 244                         self._unitDescription.get_parent().get_parent().hide()
 245                 else:
 246                         self._categorySelectionButton.hide()
 247
 248                 replacementButtons = []
 249                 menu = hildonize.hildonize_menu(
 250                         self._mainWindow,
 251                         widgets.get_widget("mainMenuBar"),
 252                         replacementButtons
 253                 )
 254
 255                 if not hildonize.IS_HILDON_SUPPORTED:
 256                         _moduleLogger.info("No hildonization support")
 257
 258                 hildonize.set_application_title(
 259                         self._mainWindow, "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 260                 )
 261                 iconPath = pixmapspath + '/gonvert.png'
 262                 if os.path.exists(iconPath):
 263                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 264                 else:
 265                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 266
 267                 self._load_settings()
 268                 self._mainWindow.show()
 269
 270         def _load_settings(self):
 271                 #Restore window size from previously saved settings if it exists and is valid.
 272                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 273                 if os.path.exists(windowDatPath):
 274                         saved_window = pickle.load(open(windowDatPath, "r"))
 275                         try:
 276                                 a, b = saved_window['size']
 277                         except KeyError:
 278                                 pass
 279                         else:
 280                                 self._mainWindow.resize(a, b)
 281
 282                 #Restore selections from previously saved settings if it exists and is valid.
 283                 categoryIndex = 0
 284                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 285                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 286                 if os.path.exists(selectionsDatPath):
 287                         selections = pickle.load(open(selectionsDatPath, 'r'))
 288                         try:
 289                                 self._defaultUnitForCategory = selections['selected_units']
 290                         except KeyError:
 291                                 pass
 292
 293                         try:
 294                                 selectedCategoryName = selections['selected_category']
 295                         except KeyError:
 296                                 pass
 297                         else:
 298                                 try:
 299                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 300                                 except ValueError:
 301                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 302
 303                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 304                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 305                 self._categoryView.grab_focus()
 306
 307                 self._select_default_unit()
 308
 309         def _save_settings(self):
 310                 """
 311                 This routine saves the selections to a file, and
 312                 should therefore only be called when exiting the program.
 313
 314                 Update selections dictionary which consists of the following keys:
 315                 'self._selectedCategoryName': full name of selected category
 316                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 317                 [categoryname: #1 displayed unit, #2 displayed unit]
 318                 """
 319                 #Determine the contents of the selected category row
 320                 selected, iter = self._categoryView.get_selection().get_selected()
 321                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 322
 323                 selections = {
 324                         'selected_category': self._selectedCategoryName,
 325                         'selected_units': self._defaultUnitForCategory
 326                 }
 327                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 328                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 329
 330                 #Get last size of app and save it
 331                 window_settings = {
 332                         'size': self._mainWindow.get_size()
 333                 }
 334                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 335                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 336
 337         def _refresh_columns(self):
 338                 self._unitsView.remove_column(self._unitNameColumn)
 339                 self._unitsView.remove_column(self._unitIntegerColumn)
 340                 self._unitsView.remove_column(self._unitFractionalColumn)
 341                 self._unitsView.remove_column(self._unitSymbolColumn)
 342
 343                 self._unitsView.append_column(self._unitNameColumn)
 344                 self._unitsView.append_column(self._unitIntegerColumn)
 345                 self._unitsView.append_column(self._unitFractionalColumn)
 346                 self._unitsView.append_column(self._unitSymbolColumn)
 347
 348         def _clear_find(self):
 349                 # switch to "new find" state
 350                 self._find_result = []
 351                 self._findIndex = 0
 352
 353                 # Clear our user message
 354                 self._findLabel.set_text('')
 355
 356         def _find_first(self):
 357                 assert len(self._find_result) == 0
 358                 assert self._findIndex == 0
 359                 findString = self._findEntry.get_text().strip().lower()
 360                 if not findString:
 361                         return
 362
 363                 # Gather info on all the matching units from all categories
 364                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 365                         units = unit_data.get_units(category)
 366                         for unitIndex, unit in enumerate(units):
 367                                 loweredUnit = unit.lower()
 368                                 if loweredUnit in findString or findString in loweredUnit:
 369                                         self._find_result.append((category, unit, catIndex, unitIndex))
 370
 371         def _update_find_selection(self):
 372                 assert 0 < len(self._find_result)
 373
 374                 #check if next find is in a new category (prevent category changes when unnecessary
 375                 searchCategoryName = self._find_result[self._findIndex][0]
 376                 if self._selectedCategoryName != searchCategoryName:
 377                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % searchCategoryName)
 378                         self._categoryView.set_cursor(
 379                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 380                         )
 381
 382                 self._unitsView.set_cursor(
 383                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 384                 )
 385
 386         def _find_next(self):
 387                 if len(self._find_result) == 0:
 388                         self._find_first()
 389                 else:
 390                         if self._findIndex == len(self._find_result)-1:
 391                                 self._findIndex = 0
 392                         else:
 393                                 self._findIndex += 1
 394
 395                 if not self._find_result:
 396                         self._findLabel.set_text('Text not found')
 397                 else:
 398                         self._update_find_selection()
 399                         resultsLeft = len(self._find_result) - self._findIndex - 1
 400                         self._findLabel.set_text(
 401                                 '%s result(s) left' % (resultsLeft, )
 402                         )
 403
 404         def _find_previous(self):
 405                 if len(self._find_result) == 0:
 406                         self._find_first()
 407                 else:
 408                         if self._findIndex == 0:
 409                                 self._findIndex = len(self._find_result)-1
 410                         else:
 411                                 self._findIndex -= 1
 412
 413                 if not self._find_result:
 414                         self._findLabel.set_text('Text not found')
 415                 else:
 416                         self._update_find_selection()
 417                         resultsLeft = len(self._find_result) - self._findIndex - 1
 418                         self._findLabel.set_text(
 419                                 '%s result(s) left' % (resultsLeft, )
 420                         )
 421
 422         def _toggle_find(self):
 423                 if self._searchLayout.get_property("visible"):
 424                         self._searchLayout.hide()
 425                         self._unitsView.grab_focus()
 426                 else:
 427                         self._searchLayout.show()
 428                         self._findEntry.grab_focus()
 429
 430         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 431                 leftUnitText = self._unitModel.get_value(leftItr, self.UNITS_NAME_IDX)
 432                 rightUnitText = self._unitModel.get_value(rightItr, self.UNITS_NAME_IDX)
 433                 return cmp(leftUnitText, rightUnitText)
 434
 435         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 436                 leftSymbolText = self._unitModel.get_value(leftItr, self.UNITS_SYMBOL_IDX)
 437                 rightSymbolText = self._unitModel.get_value(rightItr, self.UNITS_SYMBOL_IDX)
 438                 return cmp(leftSymbolText, rightSymbolText)
 439
 440         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 441                 #special sorting exceptions for ascii values (instead of float values)
 442                 if self._selectedCategoryName == "Computer Numbers":
 443                         leftValue = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 444                         rightValue = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 445                 else:
 446                         leftValueText = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 447                         leftValue = float(leftValueText) if leftValueText else 0.0
 448
 449                         rightValueText = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 450                         rightValue = float(rightValueText) if rightValueText else 0.0
 451                 return cmp(leftValue, rightValue)
 452
 453         def _get_column_sort_stuff(self):
 454                 columns = (
 455                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 456                         (self._unitIntegerColumn, "_value_sort_direction", self._value_model_cmp),
 457                         (self._unitFractionalColumn, "_value_sort_direction", self._value_model_cmp),
 458                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 459                 )
 460                 return columns
 461
 462         def _switch_category(self, category):
 463                 self._selectedCategoryName = category
 464                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 465
 466                 #Fill up the units descriptions and clear the value cells
 467                 self._clear_visible_unit_data()
 468                 nameLength = 0
 469                 for key in unit_data.get_units(self._selectedCategoryName):
 470                         row = key, '0.0', self._unitDataInCategory[key][1], '0.', '0'
 471                         self._unitModel.append(row)
 472                         nameLength = max(nameLength, len(key))
 473                 self._sortedUnitModel.sort_column_changed()
 474
 475                 if FORCE_HILDON_LIKE:
 476                         maxCatCharWidth = int(nameLength * 0.75)
 477                         maxCharWidth = int(len("nibble | hexit | quadbit") * 0.75)
 478                         charWidth = min(maxCatCharWidth, maxCharWidth)
 479                         self._unitsNameRenderer.set_property("width-chars", charWidth)
 480
 481                 self._select_default_unit()
 482
 483         def _clear_visible_unit_data(self):
 484                 self._unitDescription.get_buffer().set_text("")
 485                 self._unitName.set_text('')
 486                 self._unitValue.set_text('')
 487                 self._unitSymbol.set_text('')
 488
 489                 self._previousUnitName.set_text('')
 490                 self._previousUnitValue.set_text('')
 491                 self._previousUnitSymbol.set_text('')
 492
 493                 self._unitModel.clear()
 494
 495         def _select_default_unit(self):
 496                 # Restore the previous historical settings of previously selected units
 497                 # in this newly selected category
 498                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 499                 defaultSecondary = ""
 500                 if self._selectedCategoryName in self._defaultUnitForCategory:
 501                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 502                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 503                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 504                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 505
 506                 units = unit_data.get_units(self._selectedCategoryName)
 507
 508                 #Restore oldest selection first.
 509                 if defaultPrimary:
 510                         try:
 511                                 unitIndex = units.index(defaultPrimary)
 512                         except ValueError:
 513                                 unitIndex = 0
 514                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 515
 516                 #Restore newest selection second.
 517                 if defaultSecondary:
 518                         try:
 519                                 unitIndex = units.index(defaultSecondary)
 520                         except ValueError:
 521                                 unitIndex = 0
 522                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 523
 524                 # select the text so user can start typing right away
 525                 self._unitValue.grab_focus()
 526                 self._unitValue.select_region(0, -1)
 527
 528         def _sanitize_value(self, userEntry):
 529                 if self._selectedCategoryName == "Computer Numbers":
 530                         if userEntry == '':
 531                                 value = '0'
 532                         else:
 533                                 value = userEntry
 534                 else:
 535                         if userEntry == '':
 536                                 value = 0.0
 537                         else:
 538                                 value = float(userEntry)
 539                 return value
 540
 541         def _on_key_press(self, widget, event, *args):
 542                 """
 543                 @note Hildon specific
 544                 """
 545                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 546                 try:
 547                         if (
 548                                 event.keyval == gtk.keysyms.F6 or
 549                                 event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 550                         ):
 551                                 if self._isFullScreen:
 552                                         self._mainWindow.unfullscreen()
 553                                 else:
 554                                         self._mainWindow.fullscreen()
 555                         elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 556                                 self._toggle_find()
 557                         elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 558                                 self._find_previous()
 559                         elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 560                                 self._find_next()
 561                         elif event.keyval == ord("l") and event.get_state() & gtk.gdk.CONTROL_MASK:
 562                                 with open(constants._user_logpath_, "r") as f:
 563                                         logLines = f.xreadlines()
 564                                         log = "".join(logLines)
 565                                         self._clipboard.set_text(str(log))
 566                 except Exception, e:
 567                         _moduleLogger.exception("_on_key_press")
 568
 569         def _on_window_state_change(self, widget, event, *args):
 570                 """
 571                 @note Hildon specific
 572                 """
 573                 try:
 574                         if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 575                                 self._isFullScreen = True
 576                         else:
 577                                 self._isFullScreen = False
 578                 except Exception, e:
 579                         _moduleLogger.exception("_on_window_state_change")
 580
 581         def _on_findEntry_changed(self, *args):
 582                 """
 583                 Clear out find results since the user wants to look for something new
 584                 """
 585                 try:
 586                         self._clear_find()
 587                 except Exception:
 588                         _moduleLogger.exception("_on_findEntry_changed")
 589
 590         def _on_find_activate(self, *args):
 591                 try:
 592                         self._find_next()
 593                         self._findButton.grab_focus()
 594                 except Exception:
 595                         _moduleLogger.exception("_on_find_activate")
 596
 597         def _on_click_unit_column(self, col):
 598                 """
 599                 Sort the contents of the col when the user clicks on the title.
 600                 """
 601                 try:
 602                         #Determine which column requires sorting
 603                         columns = self._get_column_sort_stuff()
 604                         for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 605                                 if col is maybeCol:
 606                                         direction = getattr(self, directionName)
 607                                         gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 608
 609                                         # cause a sort
 610                                         self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 611
 612                                         # set the visual for sorting
 613                                         col.set_sort_indicator(True)
 614                                         col.set_sort_order(not direction)
 615
 616                                         setattr(self, directionName, not direction)
 617                                         break
 618                                 else:
 619                                         maybeCol.set_sort_indicator(False)
 620                         else:
 621                                 assert False, "Unknown column: %s" % (col.get_title(), )
 622                 except Exception:
 623                         _moduleLogger.exception("_on_click_unit_column")
 624
 625         def _on_category_selector_clicked(self, *args):
 626                 try:
 627                         currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 628                         newIndex = hildonize.touch_selector(
 629                                 self._mainWindow,
 630                                 "Categories",
 631                                 unit_data.UNIT_CATEGORIES,
 632                                 currenntIndex,
 633                         )
 634
 635                         selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 636                         self._categorySelectionButton.set_label(selectedCategoryName)
 637                         self._categoryView.set_cursor(newIndex, self._categoryColumn, False)
 638                         self._categoryView.grab_focus()
 639                 except Exception:
 640                         _moduleLogger.exception("_on_category_selector_clicked")
 641
 642         def _on_click_category(self, *args):
 643                 try:
 644                         selected, iter = self._categoryView.get_selection().get_selected()
 645                         if iter is None:
 646                                 # User is typing in an invalid string, not selecting any category
 647                                 return
 648                         selectedCategory = self._categoryModel.get_value(iter, 0)
 649                         self._switch_category(selectedCategory)
 650                 except Exception:
 651                         _moduleLogger.exception("_on_click_category")
 652
 653         def _on_click_unit(self, *args):
 654                 try:
 655                         selected, iter = self._unitsView.get_selection().get_selected()
 656                         selected_unit = selected.get_value(iter, self.UNITS_NAME_IDX)
 657                         unit_spec = self._unitDataInCategory[selected_unit]
 658
 659                         showSymbol = False
 660
 661                         if self._unitName.get_text() != selected_unit:
 662                                 self._previousUnitName.set_text(self._unitName.get_text())
 663                                 self._previousUnitValue.set_text(self._unitValue.get_text())
 664                                 self._previousUnitSymbol.set_text(self._unitSymbol.get_text())
 665                                 if self._unitSymbol.get_text():
 666                                         showSymbol = True
 667
 668                         self._unitName.set_text(selected_unit)
 669                         self._unitValue.set_text(selected.get_value(iter, self.UNITS_VALUE_IDX))
 670                         buffer = self._unitDescription.get_buffer()
 671                         buffer.set_text(unit_spec[2])
 672                         self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 673                         if unit_spec[1]:
 674                                 showSymbol = True
 675                         else:
 676                                 showSymbol = False
 677
 678                         if showSymbol:
 679                                 self._unitSymbol.show()
 680                                 self._previousUnitSymbol.show()
 681                         else:
 682                                 self._unitSymbol.hide()
 683                                 self._previousUnitSymbol.hide()
 684
 685                         if self._unitValue.get_text() == '':
 686                                 if self._selectedCategoryName == "Computer Numbers":
 687                                         self._unitValue.set_text("0")
 688                                 else:
 689                                         self._unitValue.set_text("0.0")
 690
 691                         self._defaultUnitForCategory[self._selectedCategoryName] = [
 692                                 self._unitName.get_text(), self._previousUnitName.get_text()
 693                         ]
 694
 695                         # select the text so user can start typing right away
 696                         self._unitValue.grab_focus()
 697                         self._unitValue.select_region(0, -1)
 698                 except Exception:
 699                         _moduleLogger.exception("_on_click_unit")
 700
 701         def _on_unit_value_changed(self, *args):
 702                 try:
 703                         if self._unitName.get_text() == '':
 704                                 return
 705                         if not self._unitValue.is_focus():
 706                                 return
 707
 708                         #retrieve the conversion function and value from the selected unit
 709                         value = self._sanitize_value(self._unitValue.get_text())
 710                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 711                         base = func.to_base(value, arg)
 712
 713                         #point to the first row
 714                         for row in self._unitModel:
 715                                 func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 716                                 newValue = func.from_base(base, arg)
 717
 718                                 newValueDisplay = str(newValue)
 719                                 integerDisplay, fractionalDisplay = split_number(newValue)
 720
 721                                 row[self.UNITS_VALUE_IDX] = newValueDisplay
 722                                 row[self.UNITS_INTEGER_IDX] = integerDisplay
 723                                 row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 724
 725                         # Update the secondary unit entry
 726                         if self._previousUnitName.get_text() != '':
 727                                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 728                                 self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 729
 730                         self._sortedUnitModel.sort_column_changed()
 731                         self._refresh_columns()
 732                 except Exception:
 733                         _moduleLogger.exception("_on_unit_value_changed")
 734
 735         def _on_previous_unit_value_changed(self, *args):
 736                 try:
 737                         if self._previousUnitName.get_text() == '':
 738                                 return
 739                         if not self._previousUnitValue.is_focus():
 740                                 return
 741
 742                         #retrieve the conversion function and value from the selected unit
 743                         value = self._sanitize_value(self._previousUnitValue.get_text())
 744                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 745                         base = func.to_base(value, arg)
 746
 747                         #point to the first row
 748                         for row in self._unitModel:
 749                                 func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 750                                 newValue = func.from_base(base, arg)
 751
 752                                 newValueDisplay = str(newValue)
 753                                 integerDisplay, fractionalDisplay = split_number(newValue)
 754
 755                                 row[self.UNITS_VALUE_IDX] = newValueDisplay
 756                                 row[self.UNITS_INTEGER_IDX] = integerDisplay
 757                                 row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 758
 759                         # Update the primary unit entry
 760                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 761                         self._unitValue.set_text(str(func.from_base(base, arg, )))
 762
 763                         self._sortedUnitModel.sort_column_changed()
 764                         self._refresh_columns()
 765                 except Exception:
 766                         _moduleLogger.exception("_on_previous_unit_value_changed")
 767
 768         def _on_about_clicked(self, a):
 769                 dlg = gtk.AboutDialog()
 770                 dlg.set_name(constants.__pretty_app_name__)
 771                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 772                 dlg.set_copyright("Copyright 2009 - GPL")
 773                 dlg.set_comments("")
 774                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 775                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <edpage@byu.net>"])
 776                 dlg.run()
 777                 dlg.destroy()
 778
 779         def _on_user_exit(self, *args):
 780                 try:
 781                         self._save_settings()
 782                 except Exception:
 783                         _moduleLogger.exception("_on_user_exit")
 784                 finally:
 785                         gtk.main_quit()
 786
 787
 788 def run_gonvert():
 789         gtk.gdk.threads_init()
 790         if hildonize.IS_HILDON_SUPPORTED:
 791                 gtk.set_application_name(constants.__pretty_app_name__)
 792         handle = Gonvert()
 793         if not PROFILE_STARTUP:
 794                 gtk.main()
 795
 796
 797 if __name__ == "__main__":
 798         logging.basicConfig(level = logging.DEBUG)
 799         try:
 800                 os.makedirs(constants._data_path_)
 801         except OSError, e:
 802                 if e.errno != 17:
 803                         raise
 804
 805         run_gonvert()