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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import os
   7 import math
   8 import pickle
   9 import logging
  10
  11 import pango
  12 import gobject
  13 import gtk
  14 import gtk.glade
  15 import gtk.gdk
  16
  17 import constants
  18 import hildonize
  19 import unit_data
  20
  21 try:
  22         import gettext
  23 except ImportError:
  24         _ = lambda x: x
  25         gettext = None
  26 else:
  27         _ = gettext.gettext
  28
  29
  30 _moduleLogger = logging.getLogger("gonvert_glade")
  31 PROFILE_STARTUP = False
  32 FORCE_HILDON_LIKE = False
  33
  34 if gettext is not None:
  35         gettext.bindtextdomain('gonvert', '/usr/share/locale')
  36         gettext.textdomain('gonvert')
  37
  38
  39 def change_menu_label(widgets, labelname, newtext):
  40         item_label = widgets.get_widget(labelname).get_children()[0]
  41         item_label.set_text(newtext)
  42
  43
  44 def split_number(number):
  45         try:
  46                 fractional, integer = math.modf(number)
  47         except TypeError:
  48                 integerDisplay = number
  49                 fractionalDisplay = ""
  50         else:
  51                 integerDisplay = str(integer)
  52                 fractionalDisplay = str(fractional)
  53                 if "e+" in integerDisplay:
  54                         integerDisplay = number
  55                         fractionalDisplay = ""
  56                 elif "e-" in fractionalDisplay and 0.0 < integer:
  57                         integerDisplay = number
  58                         fractionalDisplay = ""
  59                 elif "e-" in fractionalDisplay:
  60                         integerDisplay = ""
  61                         fractionalDisplay = number
  62                 else:
  63                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  64                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  65
  66         return integerDisplay, fractionalDisplay
  67
  68
  69 class Gonvert(object):
  70
  71         _glade_files = [
  72                 os.path.join(os.path.dirname(__file__), "gonvert.glade"),
  73                 os.path.join(os.path.dirname(__file__), "../data/gonvert.glade"),
  74                 os.path.join(os.path.dirname(__file__), "../lib/gonvert.glade"),
  75                 '/usr/share/gonvert/gonvert.glade',
  76                 '/usr/lib/gonvert/gonvert.glade',
  77         ]
  78
  79         UNITS_NAME_IDX = 0
  80         UNITS_VALUE_IDX = 1
  81         UNITS_SYMBOL_IDX = 2
  82         UNITS_INTEGER_IDX = 3
  83         UNITS_FRACTION_IDX = 4
  84
  85         def __init__(self):
  86                 self._unitDataInCategory = None
  87                 self._unit_sort_direction = False
  88                 self._value_sort_direction = False
  89                 self._units_sort_direction = False
  90                 self._isFullScreen = False
  91                 self._clipboard = gtk.clipboard_get()
  92
  93                 self._find_result = [] # empty find result list
  94                 self._findIndex = 0 # default to find result number zero
  95
  96                 self._selectedCategoryName = '' # preset to no selected category
  97                 self._defaultUnitForCategory = {} # empty dictionary for later use
  98
  99                 #check to see if glade file is in current directory (user must be
 100                 # running from download untar directory)
 101                 for gladePath in self._glade_files:
 102                         if os.path.isfile(gladePath):
 103                                 homepath = os.path.dirname(gladePath)
 104                                 pixmapspath = "/".join((homepath, "pixmaps"))
 105                                 widgets = gtk.glade.XML(gladePath)
 106                                 break
 107                 else:
 108                         _moduleLogger.error("UI Descriptor not found!")
 109                         gtk.main_quit()
 110                         return
 111
 112                 self._mainWindow = widgets.get_widget('mainWindow')
 113                 self._app = hildonize.get_app_class()()
 114                 self._mainWindow = hildonize.hildonize_window(self._app, self._mainWindow)
 115
 116                 change_menu_label(widgets, 'fileMenuItem', _('File'))
 117                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
 118                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
 119                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
 120                 change_menu_label(widgets, 'findButton', _('Find'))
 121
 122                 self._categorySelectionButton = widgets.get_widget("categorySelectionButton")
 123                 self._categoryView = widgets.get_widget('categoryView')
 124
 125                 self._unitsView = widgets.get_widget('unitsView')
 126                 self._unitsView.set_property('rules_hint', 1)
 127                 self._unitsView_selection = self._unitsView.get_selection()
 128
 129                 self._unitName = widgets.get_widget('unitName')
 130                 self._unitValue = widgets.get_widget('unitValue')
 131                 self._previousUnitName = widgets.get_widget('previousUnitName')
 132                 self._previousUnitValue = widgets.get_widget('previousUnitValue')
 133
 134                 self._unitSymbol = widgets.get_widget('unitSymbol')
 135                 self._previousUnitSymbol = widgets.get_widget('previousUnitSymbol')
 136
 137                 self._unitDescription = widgets.get_widget('unitDescription')
 138
 139                 self._searchLayout = widgets.get_widget('searchLayout')
 140                 self._searchLayout.hide()
 141                 self._findEntry = widgets.get_widget('findEntry')
 142                 self._findLabel = widgets.get_widget('findLabel')
 143                 self._findButton = widgets.get_widget('findButton')
 144
 145                 self._unitsNameRenderer = gtk.CellRendererText()
 146                 self._unitsNameRenderer.set_property("scale", 0.75)
 147                 if FORCE_HILDON_LIKE:
 148                         self._unitsNameRenderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 149                         self._unitsNameRenderer.set_property("width-chars", 5)
 150                 self._unitNameColumn = gtk.TreeViewColumn(_('Name'), self._unitsNameRenderer)
 151                 self._unitNameColumn.set_property('resizable', True)
 152                 self._unitNameColumn.add_attribute(self._unitsNameRenderer, 'text', self.UNITS_NAME_IDX)
 153                 self._unitNameColumn.set_clickable(True)
 154                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 155                 self._unitsView.append_column(self._unitNameColumn)
 156
 157                 renderer = gtk.CellRendererText()
 158                 renderer.set_property("xalign", 1.0)
 159                 renderer.set_property("alignment", pango.ALIGN_RIGHT)
 160                 hildonize.set_cell_thumb_selectable(renderer)
 161                 self._unitIntegerColumn = gtk.TreeViewColumn(_('Value'), renderer)
 162                 self._unitIntegerColumn.set_property('resizable', True)
 163                 self._unitIntegerColumn.add_attribute(renderer, 'text', self.UNITS_INTEGER_IDX)
 164                 self._unitIntegerColumn.set_clickable(True)
 165                 self._unitIntegerColumn.connect("clicked", self._on_click_unit_column)
 166                 self._unitsView.append_column(self._unitIntegerColumn)
 167
 168                 renderer = gtk.CellRendererText()
 169                 renderer.set_property("xalign", 0.0)
 170                 renderer.set_property("alignment", pango.ALIGN_LEFT)
 171                 renderer.set_property("scale", 0.75)
 172                 self._unitFractionalColumn = gtk.TreeViewColumn(_(''), renderer)
 173                 self._unitFractionalColumn.set_property('resizable', True)
 174                 self._unitFractionalColumn.add_attribute(renderer, 'text', self.UNITS_FRACTION_IDX)
 175                 self._unitFractionalColumn.set_clickable(True)
 176                 self._unitFractionalColumn.connect("clicked", self._on_click_unit_column)
 177                 self._unitsView.append_column(self._unitFractionalColumn)
 178
 179                 renderer = gtk.CellRendererText()
 180                 renderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 181                 #renderer.set_property("scale", 0.5)
 182                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 183                 self._unitSymbolColumn.set_property('resizable', True)
 184                 self._unitSymbolColumn.add_attribute(renderer, 'text', self.UNITS_SYMBOL_IDX)
 185                 self._unitSymbolColumn.set_clickable(True)
 186                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 187                 self._unitsView.append_column(self._unitSymbolColumn)
 188
 189                 self._unitModel = gtk.ListStore(
 190                         gobject.TYPE_STRING, # UNITS_NAME_IDX
 191                         gobject.TYPE_STRING, # UNITS_VALUE_IDX
 192                         gobject.TYPE_STRING, # UNITS_SYMBOL_IDX
 193                         gobject.TYPE_STRING, # UNITS_INTEGER_IDX
 194                         gobject.TYPE_STRING, # UNITS_FRACTION_IDX
 195                 )
 196                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 197                 columns = self._get_column_sort_stuff()
 198                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 199                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 200                 self._unitsView.set_model(self._sortedUnitModel)
 201
 202                 #Insert a column into the category list even though the heading will not be seen
 203                 renderer = gtk.CellRendererText()
 204                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 205                 self._categoryColumn.set_property('resizable', 1)
 206                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 207                 self._categoryView.append_column(self._categoryColumn)
 208
 209                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 210                 self._categoryView.set_model(self._categoryModel)
 211                 #colourize each row differently for easier reading
 212                 self._categoryView.set_property('rules_hint', 1)
 213
 214                 #Populate the catagories list
 215                 for key in unit_data.UNIT_CATEGORIES:
 216                         row = (key, )
 217                         self._categoryModel.append(row)
 218
 219                 #--------- connections to GUI ----------------
 220                 self._mainWindow.connect("delete-event", self._on_user_exit)
 221                 self._mainWindow.connect("key-press-event", self._on_key_press)
 222                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 223                 self._categorySelectionButton.connect("clicked", self._on_category_selector_clicked)
 224                 self._categoryView.connect("cursor-changed", self._on_click_category)
 225                 self._findButton.connect("clicked", self._on_find_activate)
 226                 self._findEntry.connect("activate", self._on_find_activate)
 227                 self._findEntry.connect("changed", self._on_findEntry_changed)
 228                 self._previousUnitValue.connect("changed", self._on_previous_unit_value_changed)
 229                 self._unitValue.connect("changed", self._on_unit_value_changed)
 230                 self._unitsView.connect("cursor-changed", self._on_click_unit)
 231                 if hildonize.GTK_MENU_USED:
 232                         widgets.get_widget("aboutMenuItem").connect("activate", self._on_about_clicked)
 233                         widgets.get_widget("exitMenuItem").connect("activate", self._on_user_exit)
 234
 235                 for scrollingWidgetName in (
 236                         "unitsViewScrolledWindow",
 237                 ):
 238                         scrollingWidget = widgets.get_widget(scrollingWidgetName)
 239                         assert scrollingWidget is not None, scrollingWidgetName
 240                         hildonize.hildonize_scrollwindow_with_viewport(scrollingWidget)
 241
 242                 if hildonize.IS_HILDON_SUPPORTED or FORCE_HILDON_LIKE:
 243                         self._categoryView.get_parent().hide()
 244                         self._unitsView.set_headers_visible(False)
 245                         self._previousUnitName.get_parent().hide()
 246                         self._unitDescription.get_parent().get_parent().hide()
 247                 else:
 248                         self._categorySelectionButton.hide()
 249
 250                 replacementButtons = []
 251                 menu = hildonize.hildonize_menu(
 252                         self._mainWindow,
 253                         widgets.get_widget("mainMenuBar"),
 254                         replacementButtons
 255                 )
 256
 257                 if not hildonize.IS_HILDON_SUPPORTED:
 258                         _moduleLogger.info("No hildonization support")
 259
 260                 hildonize.set_application_title(
 261                         self._mainWindow, "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 262                 )
 263                 iconPath = pixmapspath + '/gonvert.png'
 264                 if os.path.exists(iconPath):
 265                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 266                 else:
 267                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 268
 269                 self._load_settings()
 270                 self._mainWindow.show()
 271
 272         def _load_settings(self):
 273                 #Restore window size from previously saved settings if it exists and is valid.
 274                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 275                 if os.path.exists(windowDatPath):
 276                         saved_window = pickle.load(open(windowDatPath, "r"))
 277                         try:
 278                                 a, b = saved_window['size']
 279                         except KeyError:
 280                                 pass
 281                         else:
 282                                 self._mainWindow.resize(a, b)
 283
 284                 #Restore selections from previously saved settings if it exists and is valid.
 285                 categoryIndex = 0
 286                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 287                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 288                 if os.path.exists(selectionsDatPath):
 289                         selections = pickle.load(open(selectionsDatPath, 'r'))
 290                         try:
 291                                 self._defaultUnitForCategory = selections['selected_units']
 292                         except KeyError:
 293                                 pass
 294
 295                         try:
 296                                 selectedCategoryName = selections['selected_category']
 297                         except KeyError:
 298                                 pass
 299                         else:
 300                                 try:
 301                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 302                                 except ValueError:
 303                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 304
 305                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 306                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 307                 self._categoryView.grab_focus()
 308
 309                 self._select_default_unit()
 310
 311         def _save_settings(self):
 312                 """
 313                 This routine saves the selections to a file, and
 314                 should therefore only be called when exiting the program.
 315
 316                 Update selections dictionary which consists of the following keys:
 317                 'self._selectedCategoryName': full name of selected category
 318                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 319                 [categoryname: #1 displayed unit, #2 displayed unit]
 320                 """
 321                 #Determine the contents of the selected category row
 322                 selected, iter = self._categoryView.get_selection().get_selected()
 323                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 324
 325                 selections = {
 326                         'selected_category': self._selectedCategoryName,
 327                         'selected_units': self._defaultUnitForCategory
 328                 }
 329                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 330                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 331
 332                 #Get last size of app and save it
 333                 window_settings = {
 334                         'size': self._mainWindow.get_size()
 335                 }
 336                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 337                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 338
 339         def _refresh_columns(self):
 340                 self._unitsView.remove_column(self._unitNameColumn)
 341                 self._unitsView.remove_column(self._unitIntegerColumn)
 342                 self._unitsView.remove_column(self._unitFractionalColumn)
 343                 self._unitsView.remove_column(self._unitSymbolColumn)
 344
 345                 self._unitsView.append_column(self._unitNameColumn)
 346                 self._unitsView.append_column(self._unitIntegerColumn)
 347                 self._unitsView.append_column(self._unitFractionalColumn)
 348                 self._unitsView.append_column(self._unitSymbolColumn)
 349
 350         def _clear_find(self):
 351                 # switch to "new find" state
 352                 self._find_result = []
 353                 self._findIndex = 0
 354
 355                 # Clear our user message
 356                 self._findLabel.set_text('')
 357
 358         def _find_first(self):
 359                 assert len(self._find_result) == 0
 360                 assert self._findIndex == 0
 361                 findString = self._findEntry.get_text().strip().lower()
 362                 if not findString:
 363                         return
 364
 365                 # Gather info on all the matching units from all categories
 366                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 367                         units = unit_data.get_units(category)
 368                         for unitIndex, unit in enumerate(units):
 369                                 loweredUnit = unit.lower()
 370                                 if loweredUnit in findString or findString in loweredUnit:
 371                                         self._find_result.append((category, unit, catIndex, unitIndex))
 372
 373         def _update_find_selection(self):
 374                 assert 0 < len(self._find_result)
 375
 376                 #check if next find is in a new category (prevent category changes when unnecessary
 377                 searchCategoryName = self._find_result[self._findIndex][0]
 378                 if self._selectedCategoryName != searchCategoryName:
 379                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % searchCategoryName)
 380                         self._categoryView.set_cursor(
 381                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 382                         )
 383
 384                 self._unitsView.set_cursor(
 385                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 386                 )
 387
 388         def _find_next(self):
 389                 if len(self._find_result) == 0:
 390                         self._find_first()
 391                 else:
 392                         if self._findIndex == len(self._find_result)-1:
 393                                 self._findIndex = 0
 394                         else:
 395                                 self._findIndex += 1
 396
 397                 if not self._find_result:
 398                         self._findLabel.set_text('Text not found')
 399                 else:
 400                         self._update_find_selection()
 401                         resultsLeft = len(self._find_result) - self._findIndex - 1
 402                         self._findLabel.set_text(
 403                                 '%s result(s) left' % (resultsLeft, )
 404                         )
 405
 406         def _find_previous(self):
 407                 if len(self._find_result) == 0:
 408                         self._find_first()
 409                 else:
 410                         if self._findIndex == 0:
 411                                 self._findIndex = len(self._find_result)-1
 412                         else:
 413                                 self._findIndex -= 1
 414
 415                 if not self._find_result:
 416                         self._findLabel.set_text('Text not found')
 417                 else:
 418                         self._update_find_selection()
 419                         resultsLeft = len(self._find_result) - self._findIndex - 1
 420                         self._findLabel.set_text(
 421                                 '%s result(s) left' % (resultsLeft, )
 422                         )
 423
 424         def _toggle_find(self):
 425                 if self._searchLayout.get_property("visible"):
 426                         self._searchLayout.hide()
 427                         self._unitsView.grab_focus()
 428                 else:
 429                         self._searchLayout.show()
 430                         self._findEntry.grab_focus()
 431
 432         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 433                 leftUnitText = self._unitModel.get_value(leftItr, self.UNITS_NAME_IDX)
 434                 rightUnitText = self._unitModel.get_value(rightItr, self.UNITS_NAME_IDX)
 435                 return cmp(leftUnitText, rightUnitText)
 436
 437         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 438                 leftSymbolText = self._unitModel.get_value(leftItr, self.UNITS_SYMBOL_IDX)
 439                 rightSymbolText = self._unitModel.get_value(rightItr, self.UNITS_SYMBOL_IDX)
 440                 return cmp(leftSymbolText, rightSymbolText)
 441
 442         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 443                 #special sorting exceptions for ascii values (instead of float values)
 444                 if self._selectedCategoryName == "Computer Numbers":
 445                         leftValue = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 446                         rightValue = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 447                 else:
 448                         leftValueText = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 449                         leftValue = float(leftValueText) if leftValueText else 0.0
 450
 451                         rightValueText = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 452                         rightValue = float(rightValueText) if rightValueText else 0.0
 453                 return cmp(leftValue, rightValue)
 454
 455         def _get_column_sort_stuff(self):
 456                 columns = (
 457                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 458                         (self._unitIntegerColumn, "_value_sort_direction", self._value_model_cmp),
 459                         (self._unitFractionalColumn, "_value_sort_direction", self._value_model_cmp),
 460                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 461                 )
 462                 return columns
 463
 464         def _switch_category(self, category):
 465                 self._selectedCategoryName = category
 466                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 467
 468                 #Fill up the units descriptions and clear the value cells
 469                 self._clear_visible_unit_data()
 470                 nameLength = 0
 471                 for key in unit_data.get_units(self._selectedCategoryName):
 472                         row = key, '0.0', self._unitDataInCategory[key][1], '0.', '0'
 473                         self._unitModel.append(row)
 474                         nameLength = max(nameLength, len(key))
 475                 self._sortedUnitModel.sort_column_changed()
 476
 477                 if FORCE_HILDON_LIKE:
 478                         maxCatCharWidth = int(nameLength * 0.75)
 479                         maxCharWidth = int(len("nibble | hexit | quadbit") * 0.75)
 480                         charWidth = min(maxCatCharWidth, maxCharWidth)
 481                         self._unitsNameRenderer.set_property("width-chars", charWidth)
 482
 483                 self._select_default_unit()
 484
 485         def _clear_visible_unit_data(self):
 486                 self._unitDescription.get_buffer().set_text("")
 487                 self._unitName.set_text('')
 488                 self._unitValue.set_text('')
 489                 self._unitSymbol.set_text('')
 490
 491                 self._previousUnitName.set_text('')
 492                 self._previousUnitValue.set_text('')
 493                 self._previousUnitSymbol.set_text('')
 494
 495                 self._unitModel.clear()
 496
 497         def _select_default_unit(self):
 498                 # Restore the previous historical settings of previously selected units
 499                 # in this newly selected category
 500                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 501                 defaultSecondary = ""
 502                 if self._selectedCategoryName in self._defaultUnitForCategory:
 503                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 504                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 505                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 506                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 507
 508                 units = unit_data.get_units(self._selectedCategoryName)
 509
 510                 #Restore oldest selection first.
 511                 if defaultPrimary:
 512                         try:
 513                                 unitIndex = units.index(defaultPrimary)
 514                         except ValueError:
 515                                 unitIndex = 0
 516                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 517
 518                 #Restore newest selection second.
 519                 if defaultSecondary:
 520                         try:
 521                                 unitIndex = units.index(defaultSecondary)
 522                         except ValueError:
 523                                 unitIndex = 0
 524                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 525
 526                 # select the text so user can start typing right away
 527                 self._unitValue.grab_focus()
 528                 self._unitValue.select_region(0, -1)
 529
 530         def _sanitize_value(self, userEntry):
 531                 if self._selectedCategoryName == "Computer Numbers":
 532                         if userEntry == '':
 533                                 value = '0'
 534                         else:
 535                                 value = userEntry
 536                 else:
 537                         if userEntry == '':
 538                                 value = 0.0
 539                         else:
 540                                 value = float(userEntry)
 541                 return value
 542
 543         def _on_key_press(self, widget, event, *args):
 544                 """
 545                 @note Hildon specific
 546                 """
 547                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 548                 try:
 549                         if (
 550                                 event.keyval == gtk.keysyms.F6 or
 551                                 event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 552                         ):
 553                                 if self._isFullScreen:
 554                                         self._mainWindow.unfullscreen()
 555                                 else:
 556                                         self._mainWindow.fullscreen()
 557                         elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 558                                 self._toggle_find()
 559                         elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 560                                 self._find_previous()
 561                         elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 562                                 self._find_next()
 563                         elif event.keyval == ord("l") and event.get_state() & gtk.gdk.CONTROL_MASK:
 564                                 with open(constants._user_logpath_, "r") as f:
 565                                         logLines = f.xreadlines()
 566                                         log = "".join(logLines)
 567                                         self._clipboard.set_text(str(log))
 568                 except Exception, e:
 569                         _moduleLogger.exception("_on_key_press")
 570
 571         def _on_window_state_change(self, widget, event, *args):
 572                 """
 573                 @note Hildon specific
 574                 """
 575                 try:
 576                         if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 577                                 self._isFullScreen = True
 578                         else:
 579                                 self._isFullScreen = False
 580                 except Exception, e:
 581                         _moduleLogger.exception("_on_window_state_change")
 582
 583         def _on_findEntry_changed(self, *args):
 584                 """
 585                 Clear out find results since the user wants to look for something new
 586                 """
 587                 try:
 588                         self._clear_find()
 589                 except Exception:
 590                         _moduleLogger.exception("_on_findEntry_changed")
 591
 592         def _on_find_activate(self, *args):
 593                 try:
 594                         self._find_next()
 595                         self._findButton.grab_focus()
 596                 except Exception:
 597                         _moduleLogger.exception("_on_find_activate")
 598
 599         def _on_click_unit_column(self, col):
 600                 """
 601                 Sort the contents of the col when the user clicks on the title.
 602                 """
 603                 try:
 604                         #Determine which column requires sorting
 605                         columns = self._get_column_sort_stuff()
 606                         for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 607                                 if col is maybeCol:
 608                                         direction = getattr(self, directionName)
 609                                         gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 610
 611                                         # cause a sort
 612                                         self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 613
 614                                         # set the visual for sorting
 615                                         col.set_sort_indicator(True)
 616                                         col.set_sort_order(not direction)
 617
 618                                         setattr(self, directionName, not direction)
 619                                         break
 620                                 else:
 621                                         maybeCol.set_sort_indicator(False)
 622                         else:
 623                                 assert False, "Unknown column: %s" % (col.get_title(), )
 624                 except Exception:
 625                         _moduleLogger.exception("_on_click_unit_column")
 626
 627         def _on_category_selector_clicked(self, *args):
 628                 try:
 629                         currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 630                         newIndex = hildonize.touch_selector(
 631                                 self._mainWindow,
 632                                 "Categories",
 633                                 unit_data.UNIT_CATEGORIES,
 634                                 currenntIndex,
 635                         )
 636
 637                         selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 638                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 639                         self._categoryView.set_cursor(newIndex, self._categoryColumn, False)
 640                         self._categoryView.grab_focus()
 641                 except Exception:
 642                         _moduleLogger.exception("_on_category_selector_clicked")
 643
 644         def _on_click_category(self, *args):
 645                 try:
 646                         selected, iter = self._categoryView.get_selection().get_selected()
 647                         if iter is None:
 648                                 # User is typing in an invalid string, not selecting any category
 649                                 return
 650                         selectedCategory = self._categoryModel.get_value(iter, 0)
 651                         self._switch_category(selectedCategory)
 652                 except Exception:
 653                         _moduleLogger.exception("_on_click_category")
 654
 655         def _on_click_unit(self, *args):
 656                 try:
 657                         selected, iter = self._unitsView.get_selection().get_selected()
 658                         selected_unit = selected.get_value(iter, self.UNITS_NAME_IDX)
 659                         unit_spec = self._unitDataInCategory[selected_unit]
 660
 661                         showSymbol = False
 662
 663                         if self._unitName.get_text() != selected_unit:
 664                                 self._previousUnitName.set_text(self._unitName.get_text())
 665                                 self._previousUnitValue.set_text(self._unitValue.get_text())
 666                                 self._previousUnitSymbol.set_text(self._unitSymbol.get_text())
 667                                 if self._unitSymbol.get_text():
 668                                         showSymbol = True
 669
 670                         self._unitName.set_text(selected_unit)
 671                         self._unitValue.set_text(selected.get_value(iter, self.UNITS_VALUE_IDX))
 672                         buffer = self._unitDescription.get_buffer()
 673                         buffer.set_text(unit_spec[2])
 674                         self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 675                         if unit_spec[1]:
 676                                 showSymbol = True
 677                         else:
 678                                 showSymbol = False
 679
 680                         if showSymbol:
 681                                 self._unitSymbol.show()
 682                                 self._previousUnitSymbol.show()
 683                         else:
 684                                 self._unitSymbol.hide()
 685                                 self._previousUnitSymbol.hide()
 686
 687                         if self._unitValue.get_text() == '':
 688                                 if self._selectedCategoryName == "Computer Numbers":
 689                                         self._unitValue.set_text("0")
 690                                 else:
 691                                         self._unitValue.set_text("0.0")
 692
 693                         self._defaultUnitForCategory[self._selectedCategoryName] = [
 694                                 self._unitName.get_text(), self._previousUnitName.get_text()
 695                         ]
 696
 697                         # select the text so user can start typing right away
 698                         self._unitValue.grab_focus()
 699                         self._unitValue.select_region(0, -1)
 700                 except Exception:
 701                         _moduleLogger.exception("_on_click_unit")
 702
 703         def _on_unit_value_changed(self, *args):
 704                 try:
 705                         if self._unitName.get_text() == '':
 706                                 return
 707                         if not self._unitValue.is_focus():
 708                                 return
 709
 710                         #retrieve the conversion function and value from the selected unit
 711                         value = self._sanitize_value(self._unitValue.get_text())
 712                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 713                         base = func.to_base(value, arg)
 714
 715                         #point to the first row
 716                         for row in self._unitModel:
 717                                 func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 718                                 newValue = func.from_base(base, arg)
 719
 720                                 newValueDisplay = str(newValue)
 721                                 integerDisplay, fractionalDisplay = split_number(newValue)
 722
 723                                 row[self.UNITS_VALUE_IDX] = newValueDisplay
 724                                 row[self.UNITS_INTEGER_IDX] = integerDisplay
 725                                 row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 726
 727                         # Update the secondary unit entry
 728                         if self._previousUnitName.get_text() != '':
 729                                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 730                                 self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 731
 732                         self._sortedUnitModel.sort_column_changed()
 733                         self._refresh_columns()
 734                 except Exception:
 735                         _moduleLogger.exception("_on_unit_value_changed")
 736
 737         def _on_previous_unit_value_changed(self, *args):
 738                 try:
 739                         if self._previousUnitName.get_text() == '':
 740                                 return
 741                         if not self._previousUnitValue.is_focus():
 742                                 return
 743
 744                         #retrieve the conversion function and value from the selected unit
 745                         value = self._sanitize_value(self._previousUnitValue.get_text())
 746                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 747                         base = func.to_base(value, arg)
 748
 749                         #point to the first row
 750                         for row in self._unitModel:
 751                                 func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 752                                 newValue = func.from_base(base, arg)
 753
 754                                 newValueDisplay = str(newValue)
 755                                 integerDisplay, fractionalDisplay = split_number(newValue)
 756
 757                                 row[self.UNITS_VALUE_IDX] = newValueDisplay
 758                                 row[self.UNITS_INTEGER_IDX] = integerDisplay
 759                                 row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 760
 761                         # Update the primary unit entry
 762                         func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 763                         self._unitValue.set_text(str(func.from_base(base, arg, )))
 764
 765                         self._sortedUnitModel.sort_column_changed()
 766                         self._refresh_columns()
 767                 except Exception:
 768                         _moduleLogger.exception("_on_previous_unit_value_changed")
 769
 770         def _on_about_clicked(self, a):
 771                 dlg = gtk.AboutDialog()
 772                 dlg.set_name(constants.__pretty_app_name__)
 773                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 774                 dlg.set_copyright("Copyright 2009 - GPL")
 775                 dlg.set_comments("")
 776                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 777                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <eopage@byu.net> (Blame him for the most recent bugs)"])
 778                 dlg.run()
 779                 dlg.destroy()
 780
 781         def _on_user_exit(self, *args):
 782                 try:
 783                         self._save_settings()
 784                 except Exception:
 785                         _moduleLogger.exception("_on_user_exit")
 786                 finally:
 787                         gtk.main_quit()
 788
 789
 790 def run_gonvert():
 791         gtk.gdk.threads_init()
 792         if hildonize.IS_HILDON_SUPPORTED:
 793                 gtk.set_application_name(constants.__pretty_app_name__)
 794         handle = Gonvert()
 795         if not PROFILE_STARTUP:
 796                 gtk.main()
 797
 798
 799 if __name__ == "__main__":
 800         logging.basicConfig(level = logging.DEBUG)
 801         try:
 802                 os.makedirs(constants._data_path_)
 803         except OSError, e:
 804                 if e.errno != 17:
 805                         raise
 806
 807         run_gonvert()