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__), "../share/gonvert.glade"),
  74                 '/usr/share/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.__isPortrait = 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
 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                 self._closeSearchButton = widgets.get_widget('closeSearchButton')
 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._closeSearchButton.connect("clicked", self._on_toggle_search)
 228                 self._previousUnitValue.connect("changed", self._on_previous_unit_value_changed)
 229                 self._unitValue.connect("changed", self._on_unit_value_changed)
 230                 self._unitValue.connect("key-press-event", self._on_browse_key_press)
 231                 self._unitsView.connect("cursor-changed", self._on_click_unit)
 232                 self._unitsView.connect("key-press-event", self._on_browse_key_press)
 233                 if hildonize.GTK_MENU_USED:
 234                         widgets.get_widget("aboutMenuItem").connect("activate", self._on_about_clicked)
 235                         widgets.get_widget("searchMenuItem").connect("activate", self._on_toggle_search)
 236                         widgets.get_widget("exitMenuItem").connect("activate", self._on_user_exit)
 237
 238                 for scrollingWidgetName in (
 239                         "unitsViewScrolledWindow",
 240                 ):
 241                         scrollingWidget = widgets.get_widget(scrollingWidgetName)
 242                         assert scrollingWidget is not None, scrollingWidgetName
 243                         scroller = hildonize.hildonize_scrollwindow(scrollingWidget)
 244                         scroller.show_all()
 245
 246                 # Simplify the UI
 247                 if hildonize.IS_HILDON_SUPPORTED or constants.FORCE_HILDON_LIKE:
 248                         self._categoryView.get_parent().hide()
 249                         self._unitsView.set_headers_visible(False)
 250                         self._previousUnitName.get_parent().hide()
 251                         self._unitDescription.get_parent().get_parent().hide()
 252                 else:
 253                         self._categorySelectionButton.hide()
 254
 255                 menu = hildonize.hildonize_menu(
 256                         self._mainWindow,
 257                         widgets.get_widget("mainMenuBar"),
 258                 )
 259                 if not hildonize.GTK_MENU_USED:
 260                         button = gtk.Button("Search")
 261                         button.connect("clicked", self._on_toggle_search)
 262                         menu.append(button)
 263
 264                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, None)
 265                         button.set_label("Name")
 266                         menu.add_filter(button)
 267                         button.connect("clicked", self._on_click_menu_filter, self._unitNameColumn)
 268                         button.set_mode(False)
 269                         filterGroup = button
 270
 271                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, filterGroup)
 272                         button.set_label("Value")
 273                         menu.add_filter(button)
 274                         button.connect("clicked", self._on_click_menu_filter, self._unitIntegerColumn)
 275                         button.set_mode(False)
 276
 277                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, filterGroup)
 278                         button.set_label("Unit")
 279                         menu.add_filter(button)
 280                         button.connect("clicked", self._on_click_menu_filter, self._unitSymbolColumn)
 281                         button.set_mode(False)
 282
 283                         menu.show_all()
 284
 285                 if not hildonize.IS_HILDON_SUPPORTED:
 286                         _moduleLogger.info("No hildonization support")
 287
 288                 hildonize.set_application_name(
 289                         "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 290                 )
 291                 iconPath = pixmapspath + '/gonvert.png'
 292                 if os.path.exists(iconPath):
 293                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 294                 else:
 295                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 296
 297                 self._load_settings()
 298                 self._mainWindow.show()
 299
 300         def _load_settings(self):
 301                 #Restore window size from previously saved settings if it exists and is valid.
 302                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 303                 if os.path.exists(windowDatPath):
 304                         saved_window = pickle.load(open(windowDatPath, "r"))
 305                         try:
 306                                 a, b = saved_window['size']
 307                         except KeyError:
 308                                 pass
 309                         else:
 310                                 self._mainWindow.resize(a, b)
 311                         try:
 312                                 isFullscreen = saved_window["isFullscreen"]
 313                         except KeyError:
 314                                 pass
 315                         else:
 316                                 if isFullscreen:
 317                                         self._mainWindow.fullscreen()
 318                         try:
 319                                 isPortrait = saved_window["isPortrait"]
 320                         except KeyError:
 321                                 pass
 322                         else:
 323                                 if isPortrait ^ self.__isPortrait:
 324                                         if isPortrait:
 325                                                 orientation = gtk.ORIENTATION_VERTICAL
 326                                         else:
 327                                                 orientation = gtk.ORIENTATION_HORIZONTAL
 328                                         self.set_orientation(orientation)
 329
 330                 #Restore selections from previously saved settings if it exists and is valid.
 331                 categoryIndex = 0
 332                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 333                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 334                 if os.path.exists(selectionsDatPath):
 335                         selections = pickle.load(open(selectionsDatPath, 'r'))
 336                         try:
 337                                 self._defaultUnitForCategory = selections['selected_units']
 338                         except KeyError:
 339                                 pass
 340
 341                         try:
 342                                 selectedCategoryName = selections['selected_category']
 343                         except KeyError:
 344                                 pass
 345                         else:
 346                                 try:
 347                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 348                                 except ValueError:
 349                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 350
 351                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 352                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 353                 self._categoryView.grab_focus()
 354
 355                 self._select_default_unit()
 356
 357         def _save_settings(self):
 358                 """
 359                 This routine saves the selections to a file, and
 360                 should therefore only be called when exiting the program.
 361
 362                 Update selections dictionary which consists of the following keys:
 363                 'self._selectedCategoryName': full name of selected category
 364                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 365                 [categoryname: #1 displayed unit, #2 displayed unit]
 366                 """
 367                 #Determine the contents of the selected category row
 368                 selected, iter = self._categoryView.get_selection().get_selected()
 369                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 370
 371                 selections = {
 372                         'selected_category': self._selectedCategoryName,
 373                         'selected_units': self._defaultUnitForCategory
 374                 }
 375                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 376                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 377
 378                 #Get last size of app and save it
 379                 window_settings = {
 380                         'size': self._mainWindow.get_size(),
 381                         "isFullscreen": self._isFullScreen,
 382                         "isPortrait": self.__isPortrait,
 383                 }
 384                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 385                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 386
 387         def _refresh_columns(self):
 388                 self._unitsView.remove_column(self._unitNameColumn)
 389                 self._unitsView.remove_column(self._unitIntegerColumn)
 390                 self._unitsView.remove_column(self._unitFractionalColumn)
 391                 self._unitsView.remove_column(self._unitSymbolColumn)
 392
 393                 self._unitsView.append_column(self._unitNameColumn)
 394                 self._unitsView.append_column(self._unitIntegerColumn)
 395                 self._unitsView.append_column(self._unitFractionalColumn)
 396                 self._unitsView.append_column(self._unitSymbolColumn)
 397
 398         def _clear_find(self):
 399                 # switch to "new find" state
 400                 self._find_result = []
 401                 self._findIndex = 0
 402
 403                 # Clear our user message
 404                 self._findLabel.set_text('')
 405
 406         def _find_first(self):
 407                 assert len(self._find_result) == 0
 408                 assert self._findIndex == 0
 409                 findString = self._findEntry.get_text().strip().lower()
 410                 if not findString:
 411                         return
 412
 413                 # Gather info on all the matching units from all categories
 414                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 415                         units = unit_data.get_units(category)
 416                         for unitIndex, unit in enumerate(units):
 417                                 loweredUnit = unit.lower()
 418                                 if loweredUnit in findString or findString in loweredUnit:
 419                                         self._find_result.append((category, unit, catIndex, unitIndex))
 420
 421         def _update_find_selection(self):
 422                 assert 0 < len(self._find_result)
 423
 424                 #check if next find is in a new category (prevent category changes when unnecessary
 425                 searchCategoryName = self._find_result[self._findIndex][0]
 426                 if self._selectedCategoryName != searchCategoryName:
 427                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % searchCategoryName)
 428                         self._categoryView.set_cursor(
 429                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 430                         )
 431
 432                 self._unitsView.set_cursor(
 433                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 434                 )
 435
 436         def _find_next(self):
 437                 if len(self._find_result) == 0:
 438                         self._find_first()
 439                 else:
 440                         if self._findIndex == len(self._find_result)-1:
 441                                 self._findIndex = 0
 442                         else:
 443                                 self._findIndex += 1
 444
 445                 if not self._find_result:
 446                         self._findLabel.set_text('Text not found')
 447                 else:
 448                         self._update_find_selection()
 449                         resultsLeft = len(self._find_result) - self._findIndex - 1
 450                         self._findLabel.set_text(
 451                                 '%s result(s) left' % (resultsLeft, )
 452                         )
 453
 454         def _find_previous(self):
 455                 if len(self._find_result) == 0:
 456                         self._find_first()
 457                 else:
 458                         if self._findIndex == 0:
 459                                 self._findIndex = len(self._find_result)-1
 460                         else:
 461                                 self._findIndex -= 1
 462
 463                 if not self._find_result:
 464                         self._findLabel.set_text('Text not found')
 465                 else:
 466                         self._update_find_selection()
 467                         resultsLeft = len(self._find_result) - self._findIndex - 1
 468                         self._findLabel.set_text(
 469                                 '%s result(s) left' % (resultsLeft, )
 470                         )
 471
 472         def _toggle_find(self):
 473                 if self._searchLayout.get_property("visible"):
 474                         self._searchLayout.hide()
 475                         self._unitsView.grab_focus()
 476                 else:
 477                         self._searchLayout.show()
 478                         self._findEntry.grab_focus()
 479
 480         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 481                 leftUnitText = self._unitModel.get_value(leftItr, self.UNITS_NAME_IDX)
 482                 rightUnitText = self._unitModel.get_value(rightItr, self.UNITS_NAME_IDX)
 483                 return cmp(leftUnitText, rightUnitText)
 484
 485         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 486                 leftSymbolText = self._unitModel.get_value(leftItr, self.UNITS_SYMBOL_IDX)
 487                 rightSymbolText = self._unitModel.get_value(rightItr, self.UNITS_SYMBOL_IDX)
 488                 return cmp(leftSymbolText, rightSymbolText)
 489
 490         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 491                 #special sorting exceptions for ascii values (instead of float values)
 492                 if self._selectedCategoryName == "Computer Numbers":
 493                         leftValue = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 494                         rightValue = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 495                 else:
 496                         leftValueText = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 497                         leftValue = float(leftValueText) if leftValueText else 0.0
 498
 499                         rightValueText = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 500                         rightValue = float(rightValueText) if rightValueText else 0.0
 501                 return cmp(leftValue, rightValue)
 502
 503         def _get_column_sort_stuff(self):
 504                 columns = (
 505                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 506                         (self._unitIntegerColumn, "_value_sort_direction", self._value_model_cmp),
 507                         (self._unitFractionalColumn, "_value_sort_direction", self._value_model_cmp),
 508                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 509                 )
 510                 return columns
 511
 512         def _switch_category(self, category):
 513                 self._selectedCategoryName = category
 514                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 515
 516                 #Fill up the units descriptions and clear the value cells
 517                 self._clear_visible_unit_data()
 518                 nameLength = 0
 519                 for key in unit_data.get_units(self._selectedCategoryName):
 520                         row = key, '0.0', self._unitDataInCategory[key][1], '0.', '0'
 521                         self._unitModel.append(row)
 522                         nameLength = max(nameLength, len(key))
 523                 self._sortedUnitModel.sort_column_changed()
 524
 525                 if constants.FORCE_HILDON_LIKE:
 526                         maxCatCharWidth = int(nameLength * 0.75)
 527                         maxCharWidth = int(len("nibble | hexit | quadbit") * 0.75)
 528                         charWidth = min(maxCatCharWidth, maxCharWidth)
 529                         self._unitsNameRenderer.set_property("width-chars", charWidth)
 530
 531                 self._select_default_unit()
 532
 533         def _clear_visible_unit_data(self):
 534                 self._unitDescription.get_buffer().set_text("")
 535                 self._unitName.set_text('')
 536                 self._unitValue.set_text('')
 537                 self._unitSymbol.set_text('')
 538
 539                 self._previousUnitName.set_text('')
 540                 self._previousUnitValue.set_text('')
 541                 self._previousUnitSymbol.set_text('')
 542
 543                 self._unitModel.clear()
 544
 545         def _select_default_unit(self):
 546                 # Restore the previous historical settings of previously selected units
 547                 # in this newly selected category
 548                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 549                 defaultSecondary = ""
 550                 if self._selectedCategoryName in self._defaultUnitForCategory:
 551                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 552                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 553                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 554                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 555
 556                 units = unit_data.get_units(self._selectedCategoryName)
 557
 558                 #Restore oldest selection first.
 559                 if defaultPrimary:
 560                         try:
 561                                 unitIndex = units.index(defaultPrimary)
 562                         except ValueError:
 563                                 unitIndex = 0
 564                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 565
 566                 #Restore newest selection second.
 567                 if defaultSecondary:
 568                         try:
 569                                 unitIndex = units.index(defaultSecondary)
 570                         except ValueError:
 571                                 unitIndex = 0
 572                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 573
 574                 # select the text so user can start typing right away
 575                 self._unitValue.grab_focus()
 576                 self._unitValue.select_region(0, -1)
 577
 578         def _sanitize_value(self, userEntry):
 579                 if self._selectedCategoryName == "Computer Numbers":
 580                         if userEntry == '':
 581                                 value = '0'
 582                         else:
 583                                 value = userEntry
 584                 else:
 585                         if userEntry == '':
 586                                 value = 0.0
 587                         else:
 588                                 value = float(userEntry)
 589                 return value
 590
 591         def _select_sort_column(self, col):
 592                 #Determine which column requires sorting
 593                 columns = self._get_column_sort_stuff()
 594                 for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 595                         if col is maybeCol:
 596                                 direction = getattr(self, directionName)
 597                                 gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 598
 599                                 # cause a sort
 600                                 self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 601
 602                                 # set the visual for sorting
 603                                 col.set_sort_indicator(True)
 604                                 col.set_sort_order(not direction)
 605
 606                                 setattr(self, directionName, not direction)
 607                                 break
 608                         else:
 609                                 maybeCol.set_sort_indicator(False)
 610                 else:
 611                         assert False, "Unknown column: %s" % (col.get_title(), )
 612
 613         def set_orientation(self, orientation):
 614                 if orientation == gtk.ORIENTATION_VERTICAL:
 615                         hildonize.window_to_portrait(self._mainWindow)
 616                         self.__isPortrait = True
 617                 elif orientation == gtk.ORIENTATION_HORIZONTAL:
 618                         hildonize.window_to_landscape(self._mainWindow)
 619                         self.__isPortrait = False
 620                 else:
 621                         raise NotImplementedError(orientation)
 622
 623         def get_orientation(self):
 624                 return gtk.ORIENTATION_VERTICAL if self.__isPortrait else gtk.ORIENTATION_HORIZONTAL
 625
 626         def _toggle_rotate(self):
 627                 if self.__isPortrait:
 628                         self.set_orientation(gtk.ORIENTATION_HORIZONTAL)
 629                 else:
 630                         self.set_orientation(gtk.ORIENTATION_VERTICAL)
 631
 632         @gtk_toolbox.log_exception(_moduleLogger)
 633         def _on_key_press(self, widget, event, *args):
 634                 """
 635                 @note Hildon specific
 636                 """
 637                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 638                 if (
 639                         event.keyval == gtk.keysyms.F6 or
 640                         event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 641                 ):
 642                         if self._isFullScreen:
 643                                 self._mainWindow.unfullscreen()
 644                         else:
 645                                 self._mainWindow.fullscreen()
 646                 elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 647                         if not hildonize.GTK_MENU_USED:
 648                                 self._toggle_find()
 649                 elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 650                         self._find_previous()
 651                 elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 652                         self._find_next()
 653                 elif event.keyval == gtk.keysyms.o and event.get_state() & gtk.gdk.CONTROL_MASK:
 654                         self._toggle_rotate()
 655                 elif (
 656                         event.keyval in (gtk.keysyms.w, gtk.keysyms.q) and
 657                         event.get_state() & gtk.gdk.CONTROL_MASK
 658                 ):
 659                         self._mainWindow.destroy()
 660                 elif event.keyval == gtk.keysyms.l and event.get_state() & gtk.gdk.CONTROL_MASK:
 661                         with open(constants._user_logpath_, "r") as f:
 662                                 logLines = f.xreadlines()
 663                                 log = "".join(logLines)
 664                                 self._clipboard.set_text(str(log))
 665
 666         @gtk_toolbox.log_exception(_moduleLogger)
 667         def _on_toggle_search(self, *args):
 668                 self._toggle_find()
 669
 670         @gtk_toolbox.log_exception(_moduleLogger)
 671         def _on_browse_key_press(self, widget, event, *args):
 672                 if event.keyval == gtk.keysyms.uparrow or event.keyval == gtk.keysyms.Up:
 673                         index, column = self._unitsView.get_cursor()
 674                         newIndex = max(index[0]-1, 0)
 675                         path = (newIndex, )
 676                         self._unitsView.set_cursor(path, column, True)
 677                         self._unitsView.scroll_to_cell(path, column, False, 0, 0)
 678                         return True # override default behavior
 679                 elif event.keyval == gtk.keysyms.downarrow or event.keyval == gtk.keysyms.Down:
 680                         index, column = self._unitsView.get_cursor()
 681                         newIndex = min(index[0]+1, len(self._unitModel)-1)
 682                         path = (newIndex, )
 683                         self._unitsView.set_cursor(path, column, True)
 684                         self._unitsView.scroll_to_cell(path, column, False, 0, 0)
 685                         return True # override default behavior
 686
 687         @gtk_toolbox.log_exception(_moduleLogger)
 688         def _on_window_state_change(self, widget, event, *args):
 689                 """
 690                 @note Hildon specific
 691                 """
 692                 if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 693                         self._isFullScreen = True
 694                 else:
 695                         self._isFullScreen = False
 696
 697         @gtk_toolbox.log_exception(_moduleLogger)
 698         def _on_findEntry_changed(self, *args):
 699                 """
 700                 Clear out find results since the user wants to look for something new
 701                 """
 702                 self._clear_find()
 703
 704         @gtk_toolbox.log_exception(_moduleLogger)
 705         def _on_find_activate(self, *args):
 706                 self._find_next()
 707                 self._findButton.grab_focus()
 708
 709         @gtk_toolbox.log_exception(_moduleLogger)
 710         def _on_click_menu_filter(self, button, col):
 711                 self._select_sort_column(col)
 712
 713         @gtk_toolbox.log_exception(_moduleLogger)
 714         def _on_click_unit_column(self, col):
 715                 """
 716                 Sort the contents of the col when the user clicks on the title.
 717                 """
 718                 self._select_sort_column(col)
 719
 720         @gtk_toolbox.log_exception(_moduleLogger)
 721         def _on_category_selector_clicked(self, *args):
 722                 currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 723                 newIndex = hildonize.touch_selector(
 724                         self._mainWindow,
 725                         "Categories",
 726                         unit_data.UNIT_CATEGORIES,
 727                         currenntIndex,
 728                 )
 729
 730                 selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 731                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 732                 self._switch_category(selectedCategoryName)
 733
 734         @gtk_toolbox.log_exception(_moduleLogger)
 735         def _on_click_category(self, *args):
 736                 selected, iter = self._categoryView.get_selection().get_selected()
 737                 if iter is None:
 738                         # User is typing in an invalid string, not selecting any category
 739                         return
 740                 selectedCategory = self._categoryModel.get_value(iter, 0)
 741                 self._switch_category(selectedCategory)
 742
 743         @gtk_toolbox.log_exception(_moduleLogger)
 744         def _on_click_unit(self, *args):
 745                 selected, iter = self._unitsView.get_selection().get_selected()
 746                 selected_unit = selected.get_value(iter, self.UNITS_NAME_IDX)
 747                 unit_spec = self._unitDataInCategory[selected_unit]
 748
 749                 showSymbol = False
 750
 751                 if self._unitName.get_text() != selected_unit:
 752                         self._previousUnitName.set_text(self._unitName.get_text())
 753                         self._previousUnitValue.set_text(self._unitValue.get_text())
 754                         self._previousUnitSymbol.set_text(self._unitSymbol.get_text())
 755                         if self._unitSymbol.get_text():
 756                                 showSymbol = True
 757
 758                 self._unitName.set_text(selected_unit)
 759                 self._unitValue.set_text(selected.get_value(iter, self.UNITS_VALUE_IDX))
 760                 buffer = self._unitDescription.get_buffer()
 761                 buffer.set_text(unit_spec[2])
 762                 self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 763                 if unit_spec[1]:
 764                         showSymbol = True
 765                 else:
 766                         showSymbol = False
 767
 768                 if showSymbol:
 769                         self._unitSymbol.show()
 770                         self._previousUnitSymbol.show()
 771                 else:
 772                         self._unitSymbol.hide()
 773                         self._previousUnitSymbol.hide()
 774
 775                 if self._unitValue.get_text() == '':
 776                         if self._selectedCategoryName == "Computer Numbers":
 777                                 self._unitValue.set_text("0")
 778                         else:
 779                                 self._unitValue.set_text("0.0")
 780
 781                 self._defaultUnitForCategory[self._selectedCategoryName] = [
 782                         self._unitName.get_text(), self._previousUnitName.get_text()
 783                 ]
 784
 785                 # select the text so user can start typing right away
 786                 self._unitValue.grab_focus()
 787                 self._unitValue.select_region(0, -1)
 788
 789         @gtk_toolbox.log_exception(_moduleLogger)
 790         def _on_unit_value_changed(self, *args):
 791                 if self._unitName.get_text() == '':
 792                         return
 793                 if not self._unitValue.is_focus():
 794                         return
 795
 796                 #retrieve the conversion function and value from the selected unit
 797                 value = self._sanitize_value(self._unitValue.get_text())
 798                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 799                 base = func.to_base(value, arg)
 800
 801                 #point to the first row
 802                 for row in self._unitModel:
 803                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 804                         newValue = func.from_base(base, arg)
 805
 806                         newValueDisplay = str(newValue)
 807                         integerDisplay, fractionalDisplay = split_number(newValue)
 808
 809                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 810                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 811                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 812
 813                 # Update the secondary unit entry
 814                 if self._previousUnitName.get_text() != '':
 815                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 816                         self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 817
 818                 self._sortedUnitModel.sort_column_changed()
 819                 self._refresh_columns()
 820
 821         @gtk_toolbox.log_exception(_moduleLogger)
 822         def _on_previous_unit_value_changed(self, *args):
 823                 if self._previousUnitName.get_text() == '':
 824                         return
 825                 if not self._previousUnitValue.is_focus():
 826                         return
 827
 828                 #retrieve the conversion function and value from the selected unit
 829                 value = self._sanitize_value(self._previousUnitValue.get_text())
 830                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 831                 base = func.to_base(value, arg)
 832
 833                 #point to the first row
 834                 for row in self._unitModel:
 835                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 836                         newValue = func.from_base(base, arg)
 837
 838                         newValueDisplay = str(newValue)
 839                         integerDisplay, fractionalDisplay = split_number(newValue)
 840
 841                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 842                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 843                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 844
 845                 # Update the primary unit entry
 846                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 847                 self._unitValue.set_text(str(func.from_base(base, arg, )))
 848
 849                 self._sortedUnitModel.sort_column_changed()
 850                 self._refresh_columns()
 851
 852         @gtk_toolbox.log_exception(_moduleLogger)
 853         def _on_about_clicked(self, a):
 854                 dlg = gtk.AboutDialog()
 855                 dlg.set_name(constants.__pretty_app_name__)
 856                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 857                 dlg.set_copyright("Copyright 2009 - GPL")
 858                 dlg.set_comments("")
 859                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 860                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <eopage@byu.net> (Blame him for the most recent bugs)"])
 861                 dlg.run()
 862                 dlg.destroy()
 863
 864         @gtk_toolbox.log_exception(_moduleLogger)
 865         def _on_user_exit(self, *args):
 866                 try:
 867                         self._save_settings()
 868                 except Exception:
 869                         pass
 870                 finally:
 871                         gtk.main_quit()
 872
 873
 874 def run_gonvert():
 875         gtk.gdk.threads_init()
 876         if hildonize.IS_HILDON_SUPPORTED:
 877                 gtk.set_application_name(constants.__pretty_app_name__)
 878         handle = Gonvert()
 879         if not constants.PROFILE_STARTUP:
 880                 gtk.main()
 881
 882
 883 if __name__ == "__main__":
 884         logging.basicConfig(level = logging.DEBUG)
 885         try:
 886                 os.makedirs(constants._data_path_)
 887         except OSError, e:
 888                 if e.errno != 17:
 889                         raise
 890
 891         run_gonvert()