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

   1 #!/usr/bin/env python
   2 # -*- coding: UTF8 -*-
   3
   4 from __future__ import with_statement
   5
   6 import os
   7 import math
   8 import pickle
   9 import logging
  10
  11 import pango
  12 import gobject
  13 import gtk
  14 import gtk.glade
  15 import gtk.gdk
  16
  17 import constants
  18 import hildonize
  19 import gtk_toolbox
  20 import unit_data
  21
  22 try:
  23         import gettext
  24 except ImportError:
  25         _ = lambda x: x
  26         gettext = None
  27 else:
  28         _ = gettext.gettext
  29
  30
  31 _moduleLogger = logging.getLogger("gonvert_glade")
  32
  33 if gettext is not None:
  34         gettext.bindtextdomain('gonvert', '/usr/share/locale')
  35         gettext.textdomain('gonvert')
  36
  37
  38 def change_menu_label(widgets, labelname, newtext):
  39         item_label = widgets.get_widget(labelname).get_children()[0]
  40         item_label.set_text(newtext)
  41
  42
  43 def split_number(number):
  44         try:
  45                 fractional, integer = math.modf(number)
  46         except TypeError:
  47                 integerDisplay = number
  48                 fractionalDisplay = ""
  49         else:
  50                 integerDisplay = str(integer)
  51                 fractionalDisplay = str(fractional)
  52                 if "e+" in integerDisplay:
  53                         integerDisplay = number
  54                         fractionalDisplay = ""
  55                 elif "e-" in fractionalDisplay and 0.0 < integer:
  56                         integerDisplay = number
  57                         fractionalDisplay = ""
  58                 elif "e-" in fractionalDisplay:
  59                         integerDisplay = ""
  60                         fractionalDisplay = number
  61                 else:
  62                         integerDisplay = integerDisplay.split(".", 1)[0] + "."
  63                         fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
  64
  65         return integerDisplay, fractionalDisplay
  66
  67
  68 class Gonvert(object):
  69
  70         _glade_files = [
  71                 os.path.join(os.path.dirname(__file__), "gonvert.glade"),
  72                 os.path.join(os.path.dirname(__file__), "../data/gonvert.glade"),
  73                 os.path.join(os.path.dirname(__file__), "../lib/gonvert.glade"),
  74                 '/usr/share/gonvert/gonvert.glade',
  75                 '/usr/lib/gonvert/gonvert.glade',
  76         ]
  77
  78         UNITS_NAME_IDX = 0
  79         UNITS_VALUE_IDX = 1
  80         UNITS_SYMBOL_IDX = 2
  81         UNITS_INTEGER_IDX = 3
  82         UNITS_FRACTION_IDX = 4
  83
  84         def __init__(self):
  85                 self._unitDataInCategory = None
  86                 self._unit_sort_direction = False
  87                 self._value_sort_direction = False
  88                 self._units_sort_direction = False
  89                 self._isFullScreen = False
  90                 self._clipboard = gtk.clipboard_get()
  91
  92                 self._find_result = [] # empty find result list
  93                 self._findIndex = 0 # default to find result number zero
  94
  95                 self._selectedCategoryName = '' # preset to no selected category
  96                 self._defaultUnitForCategory = {} # empty dictionary for later use
  97
  98                 #check to see if glade file is in current directory (user must be
  99                 # running from download untar directory)
 100                 for gladePath in self._glade_files:
 101                         if os.path.isfile(gladePath):
 102                                 homepath = os.path.dirname(gladePath)
 103                                 pixmapspath = "/".join((homepath, "pixmaps"))
 104                                 widgets = gtk.glade.XML(gladePath)
 105                                 break
 106                 else:
 107                         _moduleLogger.error("UI Descriptor not found!")
 108                         gtk.main_quit()
 109                         return
 110
 111                 self._mainWindow = widgets.get_widget('mainWindow')
 112                 self._app = hildonize.get_app_class()()
 113                 self._mainWindow = hildonize.hildonize_window(self._app, self._mainWindow)
 114
 115                 change_menu_label(widgets, 'fileMenuItem', _('File'))
 116                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
 117                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
 118                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
 119                 change_menu_label(widgets, 'findButton', _('Find'))
 120
 121                 self._categorySelectionButton = widgets.get_widget("categorySelectionButton")
 122                 self._categoryView = widgets.get_widget('categoryView')
 123
 124                 self._unitsView = widgets.get_widget('unitsView')
 125                 self._unitsView.set_property('rules_hint', 1)
 126                 self._unitsView_selection = self._unitsView.get_selection()
 127
 128                 self._unitName = widgets.get_widget('unitName')
 129                 self._unitValue = widgets.get_widget('unitValue')
 130                 self._previousUnitName = widgets.get_widget('previousUnitName')
 131                 self._previousUnitValue = widgets.get_widget('previousUnitValue')
 132
 133                 self._unitSymbol = widgets.get_widget('unitSymbol')
 134                 self._previousUnitSymbol = widgets.get_widget('previousUnitSymbol')
 135
 136                 self._unitDescription = widgets.get_widget('unitDescription')
 137
 138                 self._searchLayout = widgets.get_widget('searchLayout')
 139                 self._searchLayout.hide()
 140                 self._findEntry = widgets.get_widget('findEntry')
 141                 self._findLabel = widgets.get_widget('findLabel')
 142                 self._findButton = widgets.get_widget('findButton')
 143
 144                 self._unitsNameRenderer = gtk.CellRendererText()
 145                 self._unitsNameRenderer.set_property("scale", 0.75)
 146                 if constants.FORCE_HILDON_LIKE:
 147                         self._unitsNameRenderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 148                         self._unitsNameRenderer.set_property("width-chars", 5)
 149                 self._unitNameColumn = gtk.TreeViewColumn(_('Name'), self._unitsNameRenderer)
 150                 self._unitNameColumn.set_property('resizable', True)
 151                 self._unitNameColumn.add_attribute(self._unitsNameRenderer, 'text', self.UNITS_NAME_IDX)
 152                 self._unitNameColumn.set_clickable(True)
 153                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 154                 self._unitsView.append_column(self._unitNameColumn)
 155
 156                 renderer = gtk.CellRendererText()
 157                 renderer.set_property("xalign", 1.0)
 158                 renderer.set_property("alignment", pango.ALIGN_RIGHT)
 159                 hildonize.set_cell_thumb_selectable(renderer)
 160                 self._unitIntegerColumn = gtk.TreeViewColumn(_('Value'), renderer)
 161                 self._unitIntegerColumn.set_property('resizable', True)
 162                 self._unitIntegerColumn.add_attribute(renderer, 'text', self.UNITS_INTEGER_IDX)
 163                 self._unitIntegerColumn.set_clickable(True)
 164                 self._unitIntegerColumn.connect("clicked", self._on_click_unit_column)
 165                 self._unitsView.append_column(self._unitIntegerColumn)
 166
 167                 renderer = gtk.CellRendererText()
 168                 renderer.set_property("xalign", 0.0)
 169                 renderer.set_property("alignment", pango.ALIGN_LEFT)
 170                 renderer.set_property("scale", 0.75)
 171                 self._unitFractionalColumn = gtk.TreeViewColumn(_(''), renderer)
 172                 self._unitFractionalColumn.set_property('resizable', True)
 173                 self._unitFractionalColumn.add_attribute(renderer, 'text', self.UNITS_FRACTION_IDX)
 174                 self._unitFractionalColumn.set_clickable(True)
 175                 self._unitFractionalColumn.connect("clicked", self._on_click_unit_column)
 176                 self._unitsView.append_column(self._unitFractionalColumn)
 177
 178                 renderer = gtk.CellRendererText()
 179                 renderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 180                 #renderer.set_property("scale", 0.5)
 181                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 182                 self._unitSymbolColumn.set_property('resizable', True)
 183                 self._unitSymbolColumn.add_attribute(renderer, 'text', self.UNITS_SYMBOL_IDX)
 184                 self._unitSymbolColumn.set_clickable(True)
 185                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 186                 self._unitsView.append_column(self._unitSymbolColumn)
 187
 188                 self._unitModel = gtk.ListStore(
 189                         gobject.TYPE_STRING, # UNITS_NAME_IDX
 190                         gobject.TYPE_STRING, # UNITS_VALUE_IDX
 191                         gobject.TYPE_STRING, # UNITS_SYMBOL_IDX
 192                         gobject.TYPE_STRING, # UNITS_INTEGER_IDX
 193                         gobject.TYPE_STRING, # UNITS_FRACTION_IDX
 194                 )
 195                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 196                 columns = self._get_column_sort_stuff()
 197                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 198                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 199                 self._unitsView.set_model(self._sortedUnitModel)
 200
 201                 #Insert a column into the category list even though the heading will not be seen
 202                 renderer = gtk.CellRendererText()
 203                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 204                 self._categoryColumn.set_property('resizable', 1)
 205                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 206                 self._categoryView.append_column(self._categoryColumn)
 207
 208                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 209                 self._categoryView.set_model(self._categoryModel)
 210                 #colourize each row differently for easier reading
 211                 self._categoryView.set_property('rules_hint', 1)
 212
 213                 #Populate the catagories list
 214                 for key in unit_data.UNIT_CATEGORIES:
 215                         row = (key, )
 216                         self._categoryModel.append(row)
 217
 218                 #--------- connections to GUI ----------------
 219                 self._mainWindow.connect("destroy", self._on_user_exit)
 220                 self._mainWindow.connect("key-press-event", self._on_key_press)
 221                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 222                 self._categorySelectionButton.connect("clicked", self._on_category_selector_clicked)
 223                 self._categoryView.connect("cursor-changed", self._on_click_category)
 224                 self._findButton.connect("clicked", self._on_find_activate)
 225                 self._findEntry.connect("activate", self._on_find_activate)
 226                 self._findEntry.connect("changed", self._on_findEntry_changed)
 227                 self._previousUnitValue.connect("changed", self._on_previous_unit_value_changed)
 228                 self._unitValue.connect("changed", self._on_unit_value_changed)
 229                 self._unitValue.connect("key-press-event", self._on_browse_key_press)
 230                 self._unitsView.connect("cursor-changed", self._on_click_unit)
 231                 self._unitsView.connect("key-press-event", self._on_browse_key_press)
 232                 if hildonize.GTK_MENU_USED:
 233                         widgets.get_widget("aboutMenuItem").connect("activate", self._on_about_clicked)
 234                         widgets.get_widget("searchMenuItem").connect("activate", self._on_toggle_search)
 235                         widgets.get_widget("exitMenuItem").connect("activate", self._on_user_exit)
 236
 237                 for scrollingWidgetName in (
 238                         "unitsViewScrolledWindow",
 239                 ):
 240                         scrollingWidget = widgets.get_widget(scrollingWidgetName)
 241                         assert scrollingWidget is not None, scrollingWidgetName
 242                         hildonize.hildonize_scrollwindow(scrollingWidget)
 243
 244                 if hildonize.IS_HILDON_SUPPORTED or constants.FORCE_HILDON_LIKE:
 245                         self._categoryView.get_parent().hide()
 246                         self._unitsView.set_headers_visible(False)
 247                         self._previousUnitName.get_parent().hide()
 248                         self._unitDescription.get_parent().get_parent().hide()
 249                 else:
 250                         self._categorySelectionButton.hide()
 251
 252                 menu = hildonize.hildonize_menu(
 253                         self._mainWindow,
 254                         widgets.get_widget("mainMenuBar"),
 255                 )
 256                 if not hildonize.GTK_MENU_USED:
 257                         button = gtk.Button("Search")
 258                         button.connect("clicked", self._on_toggle_search)
 259                         menu.append(button)
 260
 261                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, None)
 262                         button.set_label("Name")
 263                         menu.add_filter(button)
 264                         button.connect("clicked", self._on_click_menu_filter, self._unitNameColumn)
 265                         button.set_mode(False)
 266                         filterGroup = button
 267
 268                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, filterGroup)
 269                         button.set_label("Value")
 270                         menu.add_filter(button)
 271                         button.connect("clicked", self._on_click_menu_filter, self._unitIntegerColumn)
 272                         button.set_mode(False)
 273
 274                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, filterGroup)
 275                         button.set_label("Unit")
 276                         menu.add_filter(button)
 277                         button.connect("clicked", self._on_click_menu_filter, self._unitSymbolColumn)
 278                         button.set_mode(False)
 279
 280                         menu.show_all()
 281
 282                 if not hildonize.IS_HILDON_SUPPORTED:
 283                         _moduleLogger.info("No hildonization support")
 284
 285                 hildonize.set_application_title(
 286                         self._mainWindow, "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 287                 )
 288                 iconPath = pixmapspath + '/gonvert.png'
 289                 if os.path.exists(iconPath):
 290                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 291                 else:
 292                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 293
 294                 self._load_settings()
 295                 self._mainWindow.show()
 296
 297         def _load_settings(self):
 298                 #Restore window size from previously saved settings if it exists and is valid.
 299                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 300                 if os.path.exists(windowDatPath):
 301                         saved_window = pickle.load(open(windowDatPath, "r"))
 302                         try:
 303                                 a, b = saved_window['size']
 304                         except KeyError:
 305                                 pass
 306                         else:
 307                                 self._mainWindow.resize(a, b)
 308
 309                 #Restore selections from previously saved settings if it exists and is valid.
 310                 categoryIndex = 0
 311                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 312                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 313                 if os.path.exists(selectionsDatPath):
 314                         selections = pickle.load(open(selectionsDatPath, 'r'))
 315                         try:
 316                                 self._defaultUnitForCategory = selections['selected_units']
 317                         except KeyError:
 318                                 pass
 319
 320                         try:
 321                                 selectedCategoryName = selections['selected_category']
 322                         except KeyError:
 323                                 pass
 324                         else:
 325                                 try:
 326                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 327                                 except ValueError:
 328                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 329
 330                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 331                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 332                 self._categoryView.grab_focus()
 333
 334                 self._select_default_unit()
 335
 336         def _save_settings(self):
 337                 """
 338                 This routine saves the selections to a file, and
 339                 should therefore only be called when exiting the program.
 340
 341                 Update selections dictionary which consists of the following keys:
 342                 'self._selectedCategoryName': full name of selected category
 343                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 344                 [categoryname: #1 displayed unit, #2 displayed unit]
 345                 """
 346                 #Determine the contents of the selected category row
 347                 selected, iter = self._categoryView.get_selection().get_selected()
 348                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 349
 350                 selections = {
 351                         'selected_category': self._selectedCategoryName,
 352                         'selected_units': self._defaultUnitForCategory
 353                 }
 354                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 355                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 356
 357                 #Get last size of app and save it
 358                 window_settings = {
 359                         'size': self._mainWindow.get_size()
 360                 }
 361                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 362                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 363
 364         def _refresh_columns(self):
 365                 self._unitsView.remove_column(self._unitNameColumn)
 366                 self._unitsView.remove_column(self._unitIntegerColumn)
 367                 self._unitsView.remove_column(self._unitFractionalColumn)
 368                 self._unitsView.remove_column(self._unitSymbolColumn)
 369
 370                 self._unitsView.append_column(self._unitNameColumn)
 371                 self._unitsView.append_column(self._unitIntegerColumn)
 372                 self._unitsView.append_column(self._unitFractionalColumn)
 373                 self._unitsView.append_column(self._unitSymbolColumn)
 374
 375         def _clear_find(self):
 376                 # switch to "new find" state
 377                 self._find_result = []
 378                 self._findIndex = 0
 379
 380                 # Clear our user message
 381                 self._findLabel.set_text('')
 382
 383         def _find_first(self):
 384                 assert len(self._find_result) == 0
 385                 assert self._findIndex == 0
 386                 findString = self._findEntry.get_text().strip().lower()
 387                 if not findString:
 388                         return
 389
 390                 # Gather info on all the matching units from all categories
 391                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 392                         units = unit_data.get_units(category)
 393                         for unitIndex, unit in enumerate(units):
 394                                 loweredUnit = unit.lower()
 395                                 if loweredUnit in findString or findString in loweredUnit:
 396                                         self._find_result.append((category, unit, catIndex, unitIndex))
 397
 398         def _update_find_selection(self):
 399                 assert 0 < len(self._find_result)
 400
 401                 #check if next find is in a new category (prevent category changes when unnecessary
 402                 searchCategoryName = self._find_result[self._findIndex][0]
 403                 if self._selectedCategoryName != searchCategoryName:
 404                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % searchCategoryName)
 405                         self._categoryView.set_cursor(
 406                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 407                         )
 408
 409                 self._unitsView.set_cursor(
 410                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 411                 )
 412
 413         def _find_next(self):
 414                 if len(self._find_result) == 0:
 415                         self._find_first()
 416                 else:
 417                         if self._findIndex == len(self._find_result)-1:
 418                                 self._findIndex = 0
 419                         else:
 420                                 self._findIndex += 1
 421
 422                 if not self._find_result:
 423                         self._findLabel.set_text('Text not found')
 424                 else:
 425                         self._update_find_selection()
 426                         resultsLeft = len(self._find_result) - self._findIndex - 1
 427                         self._findLabel.set_text(
 428                                 '%s result(s) left' % (resultsLeft, )
 429                         )
 430
 431         def _find_previous(self):
 432                 if len(self._find_result) == 0:
 433                         self._find_first()
 434                 else:
 435                         if self._findIndex == 0:
 436                                 self._findIndex = len(self._find_result)-1
 437                         else:
 438                                 self._findIndex -= 1
 439
 440                 if not self._find_result:
 441                         self._findLabel.set_text('Text not found')
 442                 else:
 443                         self._update_find_selection()
 444                         resultsLeft = len(self._find_result) - self._findIndex - 1
 445                         self._findLabel.set_text(
 446                                 '%s result(s) left' % (resultsLeft, )
 447                         )
 448
 449         def _toggle_find(self):
 450                 if self._searchLayout.get_property("visible"):
 451                         self._searchLayout.hide()
 452                         self._unitsView.grab_focus()
 453                 else:
 454                         self._searchLayout.show()
 455                         self._findEntry.grab_focus()
 456
 457         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 458                 leftUnitText = self._unitModel.get_value(leftItr, self.UNITS_NAME_IDX)
 459                 rightUnitText = self._unitModel.get_value(rightItr, self.UNITS_NAME_IDX)
 460                 return cmp(leftUnitText, rightUnitText)
 461
 462         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 463                 leftSymbolText = self._unitModel.get_value(leftItr, self.UNITS_SYMBOL_IDX)
 464                 rightSymbolText = self._unitModel.get_value(rightItr, self.UNITS_SYMBOL_IDX)
 465                 return cmp(leftSymbolText, rightSymbolText)
 466
 467         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 468                 #special sorting exceptions for ascii values (instead of float values)
 469                 if self._selectedCategoryName == "Computer Numbers":
 470                         leftValue = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 471                         rightValue = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 472                 else:
 473                         leftValueText = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 474                         leftValue = float(leftValueText) if leftValueText else 0.0
 475
 476                         rightValueText = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 477                         rightValue = float(rightValueText) if rightValueText else 0.0
 478                 return cmp(leftValue, rightValue)
 479
 480         def _get_column_sort_stuff(self):
 481                 columns = (
 482                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 483                         (self._unitIntegerColumn, "_value_sort_direction", self._value_model_cmp),
 484                         (self._unitFractionalColumn, "_value_sort_direction", self._value_model_cmp),
 485                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 486                 )
 487                 return columns
 488
 489         def _switch_category(self, category):
 490                 self._selectedCategoryName = category
 491                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 492
 493                 #Fill up the units descriptions and clear the value cells
 494                 self._clear_visible_unit_data()
 495                 nameLength = 0
 496                 for key in unit_data.get_units(self._selectedCategoryName):
 497                         row = key, '0.0', self._unitDataInCategory[key][1], '0.', '0'
 498                         self._unitModel.append(row)
 499                         nameLength = max(nameLength, len(key))
 500                 self._sortedUnitModel.sort_column_changed()
 501
 502                 if constants.FORCE_HILDON_LIKE:
 503                         maxCatCharWidth = int(nameLength * 0.75)
 504                         maxCharWidth = int(len("nibble | hexit | quadbit") * 0.75)
 505                         charWidth = min(maxCatCharWidth, maxCharWidth)
 506                         self._unitsNameRenderer.set_property("width-chars", charWidth)
 507
 508                 self._select_default_unit()
 509
 510         def _clear_visible_unit_data(self):
 511                 self._unitDescription.get_buffer().set_text("")
 512                 self._unitName.set_text('')
 513                 self._unitValue.set_text('')
 514                 self._unitSymbol.set_text('')
 515
 516                 self._previousUnitName.set_text('')
 517                 self._previousUnitValue.set_text('')
 518                 self._previousUnitSymbol.set_text('')
 519
 520                 self._unitModel.clear()
 521
 522         def _select_default_unit(self):
 523                 # Restore the previous historical settings of previously selected units
 524                 # in this newly selected category
 525                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 526                 defaultSecondary = ""
 527                 if self._selectedCategoryName in self._defaultUnitForCategory:
 528                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 529                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 530                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 531                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 532
 533                 units = unit_data.get_units(self._selectedCategoryName)
 534
 535                 #Restore oldest selection first.
 536                 if defaultPrimary:
 537                         try:
 538                                 unitIndex = units.index(defaultPrimary)
 539                         except ValueError:
 540                                 unitIndex = 0
 541                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 542
 543                 #Restore newest selection second.
 544                 if defaultSecondary:
 545                         try:
 546                                 unitIndex = units.index(defaultSecondary)
 547                         except ValueError:
 548                                 unitIndex = 0
 549                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 550
 551                 # select the text so user can start typing right away
 552                 self._unitValue.grab_focus()
 553                 self._unitValue.select_region(0, -1)
 554
 555         def _sanitize_value(self, userEntry):
 556                 if self._selectedCategoryName == "Computer Numbers":
 557                         if userEntry == '':
 558                                 value = '0'
 559                         else:
 560                                 value = userEntry
 561                 else:
 562                         if userEntry == '':
 563                                 value = 0.0
 564                         else:
 565                                 value = float(userEntry)
 566                 return value
 567
 568         def _select_sort_column(self, col):
 569                 #Determine which column requires sorting
 570                 columns = self._get_column_sort_stuff()
 571                 for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 572                         if col is maybeCol:
 573                                 direction = getattr(self, directionName)
 574                                 gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 575
 576                                 # cause a sort
 577                                 self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 578
 579                                 # set the visual for sorting
 580                                 col.set_sort_indicator(True)
 581                                 col.set_sort_order(not direction)
 582
 583                                 setattr(self, directionName, not direction)
 584                                 break
 585                         else:
 586                                 maybeCol.set_sort_indicator(False)
 587                 else:
 588                         assert False, "Unknown column: %s" % (col.get_title(), )
 589
 590         @gtk_toolbox.log_exception(_moduleLogger)
 591         def _on_key_press(self, widget, event, *args):
 592                 """
 593                 @note Hildon specific
 594                 """
 595                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 596                 if (
 597                         event.keyval == gtk.keysyms.F6 or
 598                         event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 599                 ):
 600                         if self._isFullScreen:
 601                                 self._mainWindow.unfullscreen()
 602                         else:
 603                                 self._mainWindow.fullscreen()
 604                 elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 605                         if not hildonize.GTK_MENU_USED:
 606                                 self._toggle_find()
 607                 elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 608                         self._find_previous()
 609                 elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 610                         self._find_next()
 611                 elif (
 612                         event.keyval in (gtk.keysyms.w, gtk.keysyms.q) and
 613                         event.get_state() & gtk.gdk.CONTROL_MASK
 614                 ):
 615                         self._mainWindow.destroy()
 616                 elif event.keyval == gtk.keysyms.l and event.get_state() & gtk.gdk.CONTROL_MASK:
 617                         with open(constants._user_logpath_, "r") as f:
 618                                 logLines = f.xreadlines()
 619                                 log = "".join(logLines)
 620                                 self._clipboard.set_text(str(log))
 621
 622         @gtk_toolbox.log_exception(_moduleLogger)
 623         def _on_toggle_search(self, *args):
 624                 self._toggle_find()
 625
 626         @gtk_toolbox.log_exception(_moduleLogger)
 627         def _on_browse_key_press(self, widget, event, *args):
 628                 if event.keyval == gtk.keysyms.uparrow or event.keyval == gtk.keysyms.Up:
 629                         index, column = self._unitsView.get_cursor()
 630                         newIndex = max(index[0]-1, 0)
 631                         self._unitsView.set_cursor((newIndex, ), column, True)
 632                         return True # override default behavior
 633                 elif event.keyval == gtk.keysyms.downarrow or event.keyval == gtk.keysyms.Down:
 634                         index, column = self._unitsView.get_cursor()
 635                         newIndex = min(index[0]+1, len(self._unitModel)-1)
 636                         self._unitsView.set_cursor((newIndex, ), column, True)
 637                         return True # override default behavior
 638
 639         @gtk_toolbox.log_exception(_moduleLogger)
 640         def _on_window_state_change(self, widget, event, *args):
 641                 """
 642                 @note Hildon specific
 643                 """
 644                 if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 645                         self._isFullScreen = True
 646                 else:
 647                         self._isFullScreen = False
 648
 649         @gtk_toolbox.log_exception(_moduleLogger)
 650         def _on_findEntry_changed(self, *args):
 651                 """
 652                 Clear out find results since the user wants to look for something new
 653                 """
 654                 self._clear_find()
 655
 656         @gtk_toolbox.log_exception(_moduleLogger)
 657         def _on_find_activate(self, *args):
 658                 self._find_next()
 659                 self._findButton.grab_focus()
 660
 661         @gtk_toolbox.log_exception(_moduleLogger)
 662         def _on_click_menu_filter(self, button, col):
 663                 self._select_sort_column(col)
 664
 665         @gtk_toolbox.log_exception(_moduleLogger)
 666         def _on_click_unit_column(self, col):
 667                 """
 668                 Sort the contents of the col when the user clicks on the title.
 669                 """
 670                 self._select_sort_column(col)
 671
 672         @gtk_toolbox.log_exception(_moduleLogger)
 673         def _on_category_selector_clicked(self, *args):
 674                 currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 675                 newIndex = hildonize.touch_selector(
 676                         self._mainWindow,
 677                         "Categories",
 678                         unit_data.UNIT_CATEGORIES,
 679                         currenntIndex,
 680                 )
 681
 682                 selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 683                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 684                 self._switch_category(selectedCategoryName)
 685
 686         @gtk_toolbox.log_exception(_moduleLogger)
 687         def _on_click_category(self, *args):
 688                 selected, iter = self._categoryView.get_selection().get_selected()
 689                 if iter is None:
 690                         # User is typing in an invalid string, not selecting any category
 691                         return
 692                 selectedCategory = self._categoryModel.get_value(iter, 0)
 693                 self._switch_category(selectedCategory)
 694
 695         @gtk_toolbox.log_exception(_moduleLogger)
 696         def _on_click_unit(self, *args):
 697                 selected, iter = self._unitsView.get_selection().get_selected()
 698                 selected_unit = selected.get_value(iter, self.UNITS_NAME_IDX)
 699                 unit_spec = self._unitDataInCategory[selected_unit]
 700
 701                 showSymbol = False
 702
 703                 if self._unitName.get_text() != selected_unit:
 704                         self._previousUnitName.set_text(self._unitName.get_text())
 705                         self._previousUnitValue.set_text(self._unitValue.get_text())
 706                         self._previousUnitSymbol.set_text(self._unitSymbol.get_text())
 707                         if self._unitSymbol.get_text():
 708                                 showSymbol = True
 709
 710                 self._unitName.set_text(selected_unit)
 711                 self._unitValue.set_text(selected.get_value(iter, self.UNITS_VALUE_IDX))
 712                 buffer = self._unitDescription.get_buffer()
 713                 buffer.set_text(unit_spec[2])
 714                 self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 715                 if unit_spec[1]:
 716                         showSymbol = True
 717                 else:
 718                         showSymbol = False
 719
 720                 if showSymbol:
 721                         self._unitSymbol.show()
 722                         self._previousUnitSymbol.show()
 723                 else:
 724                         self._unitSymbol.hide()
 725                         self._previousUnitSymbol.hide()
 726
 727                 if self._unitValue.get_text() == '':
 728                         if self._selectedCategoryName == "Computer Numbers":
 729                                 self._unitValue.set_text("0")
 730                         else:
 731                                 self._unitValue.set_text("0.0")
 732
 733                 self._defaultUnitForCategory[self._selectedCategoryName] = [
 734                         self._unitName.get_text(), self._previousUnitName.get_text()
 735                 ]
 736
 737                 # select the text so user can start typing right away
 738                 self._unitValue.grab_focus()
 739                 self._unitValue.select_region(0, -1)
 740
 741         @gtk_toolbox.log_exception(_moduleLogger)
 742         def _on_unit_value_changed(self, *args):
 743                 if self._unitName.get_text() == '':
 744                         return
 745                 if not self._unitValue.is_focus():
 746                         return
 747
 748                 #retrieve the conversion function and value from the selected unit
 749                 value = self._sanitize_value(self._unitValue.get_text())
 750                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 751                 base = func.to_base(value, arg)
 752
 753                 #point to the first row
 754                 for row in self._unitModel:
 755                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 756                         newValue = func.from_base(base, arg)
 757
 758                         newValueDisplay = str(newValue)
 759                         integerDisplay, fractionalDisplay = split_number(newValue)
 760
 761                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 762                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 763                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 764
 765                 # Update the secondary unit entry
 766                 if self._previousUnitName.get_text() != '':
 767                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 768                         self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 769
 770                 self._sortedUnitModel.sort_column_changed()
 771                 self._refresh_columns()
 772
 773         @gtk_toolbox.log_exception(_moduleLogger)
 774         def _on_previous_unit_value_changed(self, *args):
 775                 if self._previousUnitName.get_text() == '':
 776                         return
 777                 if not self._previousUnitValue.is_focus():
 778                         return
 779
 780                 #retrieve the conversion function and value from the selected unit
 781                 value = self._sanitize_value(self._previousUnitValue.get_text())
 782                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 783                 base = func.to_base(value, arg)
 784
 785                 #point to the first row
 786                 for row in self._unitModel:
 787                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 788                         newValue = func.from_base(base, arg)
 789
 790                         newValueDisplay = str(newValue)
 791                         integerDisplay, fractionalDisplay = split_number(newValue)
 792
 793                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 794                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 795                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 796
 797                 # Update the primary unit entry
 798                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 799                 self._unitValue.set_text(str(func.from_base(base, arg, )))
 800
 801                 self._sortedUnitModel.sort_column_changed()
 802                 self._refresh_columns()
 803
 804         @gtk_toolbox.log_exception(_moduleLogger)
 805         def _on_about_clicked(self, a):
 806                 dlg = gtk.AboutDialog()
 807                 dlg.set_name(constants.__pretty_app_name__)
 808                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 809                 dlg.set_copyright("Copyright 2009 - GPL")
 810                 dlg.set_comments("")
 811                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 812                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <eopage@byu.net> (Blame him for the most recent bugs)"])
 813                 dlg.run()
 814                 dlg.destroy()
 815
 816         @gtk_toolbox.log_exception(_moduleLogger)
 817         def _on_user_exit(self, *args):
 818                 try:
 819                         self._save_settings()
 820                 except Exception:
 821                         pass
 822                 finally:
 823                         gtk.main_quit()
 824
 825
 826 def run_gonvert():
 827         gtk.gdk.threads_init()
 828         if hildonize.IS_HILDON_SUPPORTED:
 829                 gtk.set_application_name(constants.__pretty_app_name__)
 830         handle = Gonvert()
 831         if not constants.PROFILE_STARTUP:
 832                 gtk.main()
 833
 834
 835 if __name__ == "__main__":
 836         logging.basicConfig(level = logging.DEBUG)
 837         try:
 838                 os.makedirs(constants._data_path_)
 839         except OSError, e:
 840                 if e.errno != 17:
 841                         raise
 842
 843         run_gonvert()