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.__isPortrait = False
  90                 self._isFullScreen = False
  91                 self._clipboard = gtk.clipboard_get()
  92
  93                 self._find_result = [] # empty find result list
  94                 self._findIndex = 0 # default to find result number zero
  95
  96                 self._selectedCategoryName = '' # preset to no selected category
  97                 self._defaultUnitForCategory = {} # empty dictionary for later use
  98
  99                 #check to see if glade file is in current directory (user must be
 100                 # running from download untar directory)
 101                 for gladePath in self._glade_files:
 102                         if os.path.isfile(gladePath):
 103                                 homepath = os.path.dirname(gladePath)
 104                                 pixmapspath = "/".join((homepath, "pixmaps"))
 105                                 widgets = gtk.glade.XML(gladePath)
 106                                 break
 107                 else:
 108                         _moduleLogger.error("UI Descriptor not found!")
 109                         gtk.main_quit()
 110                         return
 111
 112                 self._mainWindow = widgets.get_widget('mainWindow')
 113                 self._app = hildonize.get_app_class()()
 114                 self._mainWindow = hildonize.hildonize_window(self._app, self._mainWindow)
 115
 116                 change_menu_label(widgets, 'fileMenuItem', _('File'))
 117                 change_menu_label(widgets, 'exitMenuItem', _('Exit'))
 118                 change_menu_label(widgets, 'helpMenuItem', _('Help'))
 119                 change_menu_label(widgets, 'aboutMenuItem', _('About'))
 120
 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                 self._closeSearchButton = widgets.get_widget('closeSearchButton')
 144
 145                 self._unitsNameRenderer = gtk.CellRendererText()
 146                 self._unitsNameRenderer.set_property("scale", 0.75)
 147                 if constants.FORCE_HILDON_LIKE:
 148                         self._unitsNameRenderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 149                         self._unitsNameRenderer.set_property("width-chars", 5)
 150                 self._unitNameColumn = gtk.TreeViewColumn(_('Name'), self._unitsNameRenderer)
 151                 self._unitNameColumn.set_property('resizable', True)
 152                 self._unitNameColumn.add_attribute(self._unitsNameRenderer, 'text', self.UNITS_NAME_IDX)
 153                 self._unitNameColumn.set_clickable(True)
 154                 self._unitNameColumn.connect("clicked", self._on_click_unit_column)
 155                 self._unitsView.append_column(self._unitNameColumn)
 156
 157                 renderer = gtk.CellRendererText()
 158                 renderer.set_property("xalign", 1.0)
 159                 renderer.set_property("alignment", pango.ALIGN_RIGHT)
 160                 hildonize.set_cell_thumb_selectable(renderer)
 161                 self._unitIntegerColumn = gtk.TreeViewColumn(_('Value'), renderer)
 162                 self._unitIntegerColumn.set_property('resizable', True)
 163                 self._unitIntegerColumn.add_attribute(renderer, 'text', self.UNITS_INTEGER_IDX)
 164                 self._unitIntegerColumn.set_clickable(True)
 165                 self._unitIntegerColumn.connect("clicked", self._on_click_unit_column)
 166                 self._unitsView.append_column(self._unitIntegerColumn)
 167
 168                 renderer = gtk.CellRendererText()
 169                 renderer.set_property("xalign", 0.0)
 170                 renderer.set_property("alignment", pango.ALIGN_LEFT)
 171                 renderer.set_property("scale", 0.75)
 172                 self._unitFractionalColumn = gtk.TreeViewColumn(_(''), renderer)
 173                 self._unitFractionalColumn.set_property('resizable', True)
 174                 self._unitFractionalColumn.add_attribute(renderer, 'text', self.UNITS_FRACTION_IDX)
 175                 self._unitFractionalColumn.set_clickable(True)
 176                 self._unitFractionalColumn.connect("clicked", self._on_click_unit_column)
 177                 self._unitsView.append_column(self._unitFractionalColumn)
 178
 179                 renderer = gtk.CellRendererText()
 180                 renderer.set_property("ellipsize", pango.ELLIPSIZE_END)
 181                 #renderer.set_property("scale", 0.5)
 182                 self._unitSymbolColumn = gtk.TreeViewColumn(_('Units'), renderer)
 183                 self._unitSymbolColumn.set_property('resizable', True)
 184                 self._unitSymbolColumn.add_attribute(renderer, 'text', self.UNITS_SYMBOL_IDX)
 185                 self._unitSymbolColumn.set_clickable(True)
 186                 self._unitSymbolColumn.connect("clicked", self._on_click_unit_column)
 187                 self._unitsView.append_column(self._unitSymbolColumn)
 188
 189                 self._unitModel = gtk.ListStore(
 190                         gobject.TYPE_STRING, # UNITS_NAME_IDX
 191                         gobject.TYPE_STRING, # UNITS_VALUE_IDX
 192                         gobject.TYPE_STRING, # UNITS_SYMBOL_IDX
 193                         gobject.TYPE_STRING, # UNITS_INTEGER_IDX
 194                         gobject.TYPE_STRING, # UNITS_FRACTION_IDX
 195                 )
 196                 self._sortedUnitModel = gtk.TreeModelSort(self._unitModel)
 197                 columns = self._get_column_sort_stuff()
 198                 for columnIndex, (column, sortDirection, col_cmp) in enumerate(columns):
 199                         self._sortedUnitModel.set_sort_func(columnIndex, col_cmp)
 200                 self._unitsView.set_model(self._sortedUnitModel)
 201
 202                 #Insert a column into the category list even though the heading will not be seen
 203                 renderer = gtk.CellRendererText()
 204                 self._categoryColumn = gtk.TreeViewColumn('Title', renderer)
 205                 self._categoryColumn.set_property('resizable', 1)
 206                 self._categoryColumn.add_attribute(renderer, 'text', 0)
 207                 self._categoryView.append_column(self._categoryColumn)
 208
 209                 self._categoryModel = gtk.ListStore(gobject.TYPE_STRING)
 210                 self._categoryView.set_model(self._categoryModel)
 211                 #colourize each row differently for easier reading
 212                 self._categoryView.set_property('rules_hint', 1)
 213
 214                 #Populate the catagories list
 215                 for key in unit_data.UNIT_CATEGORIES:
 216                         row = (key, )
 217                         self._categoryModel.append(row)
 218
 219                 #--------- connections to GUI ----------------
 220                 self._mainWindow.connect("destroy", self._on_user_exit)
 221                 self._mainWindow.connect("key-press-event", self._on_key_press)
 222                 self._mainWindow.connect("window-state-event", self._on_window_state_change)
 223                 self._categorySelectionButton.connect("clicked", self._on_category_selector_clicked)
 224                 self._categoryView.connect("cursor-changed", self._on_click_category)
 225                 self._findButton.connect("clicked", self._on_find_activate)
 226                 self._findEntry.connect("activate", self._on_find_activate)
 227                 self._findEntry.connect("changed", self._on_findEntry_changed)
 228                 self._closeSearchButton.connect("clicked", self._on_toggle_search)
 229                 self._previousUnitValue.connect("changed", self._on_previous_unit_value_changed)
 230                 self._unitValue.connect("changed", self._on_unit_value_changed)
 231                 self._unitValue.connect("key-press-event", self._on_browse_key_press)
 232                 self._unitsView.connect("cursor-changed", self._on_click_unit)
 233                 self._unitsView.connect("key-press-event", self._on_browse_key_press)
 234                 if hildonize.GTK_MENU_USED:
 235                         widgets.get_widget("aboutMenuItem").connect("activate", self._on_about_clicked)
 236                         widgets.get_widget("searchMenuItem").connect("activate", self._on_toggle_search)
 237                         widgets.get_widget("exitMenuItem").connect("activate", self._on_user_exit)
 238
 239                 for scrollingWidgetName in (
 240                         "unitsViewScrolledWindow",
 241                 ):
 242                         scrollingWidget = widgets.get_widget(scrollingWidgetName)
 243                         assert scrollingWidget is not None, scrollingWidgetName
 244                         scroller = hildonize.hildonize_scrollwindow(scrollingWidget)
 245                         scroller.show_all()
 246
 247                 # Simplify the UI
 248                 if hildonize.IS_HILDON_SUPPORTED or constants.FORCE_HILDON_LIKE:
 249                         self._categoryView.get_parent().hide()
 250                         self._unitsView.set_headers_visible(False)
 251                         self._previousUnitName.get_parent().hide()
 252                         self._unitDescription.get_parent().get_parent().hide()
 253                 else:
 254                         self._categorySelectionButton.hide()
 255
 256                 menu = hildonize.hildonize_menu(
 257                         self._mainWindow,
 258                         widgets.get_widget("mainMenuBar"),
 259                 )
 260                 if not hildonize.GTK_MENU_USED:
 261                         button = gtk.Button("Search")
 262                         button.connect("clicked", self._on_toggle_search)
 263                         menu.append(button)
 264
 265                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, None)
 266                         button.set_label("Name")
 267                         menu.add_filter(button)
 268                         button.connect("clicked", self._on_click_menu_filter, self._unitNameColumn)
 269                         button.set_mode(False)
 270                         filterGroup = button
 271
 272                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, filterGroup)
 273                         button.set_label("Value")
 274                         menu.add_filter(button)
 275                         button.connect("clicked", self._on_click_menu_filter, self._unitIntegerColumn)
 276                         button.set_mode(False)
 277
 278                         button = hildonize.hildon.GtkRadioButton(gtk.HILDON_SIZE_AUTO, filterGroup)
 279                         button.set_label("Unit")
 280                         menu.add_filter(button)
 281                         button.connect("clicked", self._on_click_menu_filter, self._unitSymbolColumn)
 282                         button.set_mode(False)
 283
 284                         menu.show_all()
 285
 286                 if not hildonize.IS_HILDON_SUPPORTED:
 287                         _moduleLogger.info("No hildonization support")
 288
 289                 hildonize.set_application_title(
 290                         self._mainWindow, "%s - Unit Conversion Utility" % constants.__pretty_app_name__
 291                 )
 292                 iconPath = pixmapspath + '/gonvert.png'
 293                 if os.path.exists(iconPath):
 294                         self._mainWindow.set_icon(gtk.gdk.pixbuf_new_from_file(iconPath))
 295                 else:
 296                         _moduleLogger.warn("Error: Could not find gonvert icon: %s" % iconPath)
 297
 298                 self._load_settings()
 299                 self._mainWindow.show()
 300
 301         def _load_settings(self):
 302                 #Restore window size from previously saved settings if it exists and is valid.
 303                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 304                 if os.path.exists(windowDatPath):
 305                         saved_window = pickle.load(open(windowDatPath, "r"))
 306                         try:
 307                                 a, b = saved_window['size']
 308                         except KeyError:
 309                                 pass
 310                         else:
 311                                 self._mainWindow.resize(a, b)
 312                         try:
 313                                 isFullscreen = saved_window["isFullscreen"]
 314                         except KeyError:
 315                                 pass
 316                         else:
 317                                 if isFullscreen:
 318                                         self._mainWindow.fullscreen()
 319                         try:
 320                                 isPortrait = saved_window["isPortrait"]
 321                         except KeyError:
 322                                 pass
 323                         else:
 324                                 if isPortrait ^ self.__isPortrait:
 325                                         if isPortrait:
 326                                                 orientation = gtk.ORIENTATION_VERTICAL
 327                                         else:
 328                                                 orientation = gtk.ORIENTATION_HORIZONTAL
 329                                         self.set_orientation(orientation)
 330
 331                 #Restore selections from previously saved settings if it exists and is valid.
 332                 categoryIndex = 0
 333                 selectedCategoryName = unit_data.UNIT_CATEGORIES[0]
 334                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 335                 if os.path.exists(selectionsDatPath):
 336                         selections = pickle.load(open(selectionsDatPath, 'r'))
 337                         try:
 338                                 self._defaultUnitForCategory = selections['selected_units']
 339                         except KeyError:
 340                                 pass
 341
 342                         try:
 343                                 selectedCategoryName = selections['selected_category']
 344                         except KeyError:
 345                                 pass
 346                         else:
 347                                 try:
 348                                         categoryIndex = unit_data.UNIT_CATEGORIES.index(selectedCategoryName)
 349                                 except ValueError:
 350                                         _moduleLogger.warn("Unknown category: %s" % selectedCategoryName)
 351
 352                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 353                 self._categoryView.set_cursor(categoryIndex, self._categoryColumn, False)
 354                 self._categoryView.grab_focus()
 355
 356                 self._select_default_unit()
 357
 358         def _save_settings(self):
 359                 """
 360                 This routine saves the selections to a file, and
 361                 should therefore only be called when exiting the program.
 362
 363                 Update selections dictionary which consists of the following keys:
 364                 'self._selectedCategoryName': full name of selected category
 365                 'self._defaultUnitForCategory': self._defaultUnitForCategory dictionary which contains:
 366                 [categoryname: #1 displayed unit, #2 displayed unit]
 367                 """
 368                 #Determine the contents of the selected category row
 369                 selected, iter = self._categoryView.get_selection().get_selected()
 370                 self._selectedCategoryName = self._categoryModel.get_value(iter, 0)
 371
 372                 selections = {
 373                         'selected_category': self._selectedCategoryName,
 374                         'selected_units': self._defaultUnitForCategory
 375                 }
 376                 selectionsDatPath = "/".join((constants._data_path_, "selections.dat"))
 377                 pickle.dump(selections, open(selectionsDatPath, 'w'))
 378
 379                 #Get last size of app and save it
 380                 window_settings = {
 381                         'size': self._mainWindow.get_size(),
 382                         "isFullscreen": self._isFullScreen,
 383                         "isPortrait": self.__isPortrait,
 384                 }
 385                 windowDatPath = "/".join((constants._data_path_, "window.dat"))
 386                 pickle.dump(window_settings, open(windowDatPath, 'w'))
 387
 388         def _refresh_columns(self):
 389                 self._unitsView.remove_column(self._unitNameColumn)
 390                 self._unitsView.remove_column(self._unitIntegerColumn)
 391                 self._unitsView.remove_column(self._unitFractionalColumn)
 392                 self._unitsView.remove_column(self._unitSymbolColumn)
 393
 394                 self._unitsView.append_column(self._unitNameColumn)
 395                 self._unitsView.append_column(self._unitIntegerColumn)
 396                 self._unitsView.append_column(self._unitFractionalColumn)
 397                 self._unitsView.append_column(self._unitSymbolColumn)
 398
 399         def _clear_find(self):
 400                 # switch to "new find" state
 401                 self._find_result = []
 402                 self._findIndex = 0
 403
 404                 # Clear our user message
 405                 self._findLabel.set_text('')
 406
 407         def _find_first(self):
 408                 assert len(self._find_result) == 0
 409                 assert self._findIndex == 0
 410                 findString = self._findEntry.get_text().strip().lower()
 411                 if not findString:
 412                         return
 413
 414                 # Gather info on all the matching units from all categories
 415                 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
 416                         units = unit_data.get_units(category)
 417                         for unitIndex, unit in enumerate(units):
 418                                 loweredUnit = unit.lower()
 419                                 if loweredUnit in findString or findString in loweredUnit:
 420                                         self._find_result.append((category, unit, catIndex, unitIndex))
 421
 422         def _update_find_selection(self):
 423                 assert 0 < len(self._find_result)
 424
 425                 #check if next find is in a new category (prevent category changes when unnecessary
 426                 searchCategoryName = self._find_result[self._findIndex][0]
 427                 if self._selectedCategoryName != searchCategoryName:
 428                         self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % searchCategoryName)
 429                         self._categoryView.set_cursor(
 430                                 self._find_result[self._findIndex][2], self._categoryColumn, False
 431                         )
 432
 433                 self._unitsView.set_cursor(
 434                         self._find_result[self._findIndex][3], self._unitNameColumn, True
 435                 )
 436
 437         def _find_next(self):
 438                 if len(self._find_result) == 0:
 439                         self._find_first()
 440                 else:
 441                         if self._findIndex == len(self._find_result)-1:
 442                                 self._findIndex = 0
 443                         else:
 444                                 self._findIndex += 1
 445
 446                 if not self._find_result:
 447                         self._findLabel.set_text('Text not found')
 448                 else:
 449                         self._update_find_selection()
 450                         resultsLeft = len(self._find_result) - self._findIndex - 1
 451                         self._findLabel.set_text(
 452                                 '%s result(s) left' % (resultsLeft, )
 453                         )
 454
 455         def _find_previous(self):
 456                 if len(self._find_result) == 0:
 457                         self._find_first()
 458                 else:
 459                         if self._findIndex == 0:
 460                                 self._findIndex = len(self._find_result)-1
 461                         else:
 462                                 self._findIndex -= 1
 463
 464                 if not self._find_result:
 465                         self._findLabel.set_text('Text not found')
 466                 else:
 467                         self._update_find_selection()
 468                         resultsLeft = len(self._find_result) - self._findIndex - 1
 469                         self._findLabel.set_text(
 470                                 '%s result(s) left' % (resultsLeft, )
 471                         )
 472
 473         def _toggle_find(self):
 474                 if self._searchLayout.get_property("visible"):
 475                         self._searchLayout.hide()
 476                         self._unitsView.grab_focus()
 477                 else:
 478                         self._searchLayout.show()
 479                         self._findEntry.grab_focus()
 480
 481         def _unit_model_cmp(self, sortedModel, leftItr, rightItr):
 482                 leftUnitText = self._unitModel.get_value(leftItr, self.UNITS_NAME_IDX)
 483                 rightUnitText = self._unitModel.get_value(rightItr, self.UNITS_NAME_IDX)
 484                 return cmp(leftUnitText, rightUnitText)
 485
 486         def _symbol_model_cmp(self, sortedModel, leftItr, rightItr):
 487                 leftSymbolText = self._unitModel.get_value(leftItr, self.UNITS_SYMBOL_IDX)
 488                 rightSymbolText = self._unitModel.get_value(rightItr, self.UNITS_SYMBOL_IDX)
 489                 return cmp(leftSymbolText, rightSymbolText)
 490
 491         def _value_model_cmp(self, sortedModel, leftItr, rightItr):
 492                 #special sorting exceptions for ascii values (instead of float values)
 493                 if self._selectedCategoryName == "Computer Numbers":
 494                         leftValue = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 495                         rightValue = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 496                 else:
 497                         leftValueText = self._unitModel.get_value(leftItr, self.UNITS_VALUE_IDX)
 498                         leftValue = float(leftValueText) if leftValueText else 0.0
 499
 500                         rightValueText = self._unitModel.get_value(rightItr, self.UNITS_VALUE_IDX)
 501                         rightValue = float(rightValueText) if rightValueText else 0.0
 502                 return cmp(leftValue, rightValue)
 503
 504         def _get_column_sort_stuff(self):
 505                 columns = (
 506                         (self._unitNameColumn, "_unit_sort_direction", self._unit_model_cmp),
 507                         (self._unitIntegerColumn, "_value_sort_direction", self._value_model_cmp),
 508                         (self._unitFractionalColumn, "_value_sort_direction", self._value_model_cmp),
 509                         (self._unitSymbolColumn, "_units_sort_direction", self._symbol_model_cmp),
 510                 )
 511                 return columns
 512
 513         def _switch_category(self, category):
 514                 self._selectedCategoryName = category
 515                 self._unitDataInCategory = unit_data.UNIT_DESCRIPTIONS[self._selectedCategoryName]
 516
 517                 #Fill up the units descriptions and clear the value cells
 518                 self._clear_visible_unit_data()
 519                 nameLength = 0
 520                 for key in unit_data.get_units(self._selectedCategoryName):
 521                         row = key, '0.0', self._unitDataInCategory[key][1], '0.', '0'
 522                         self._unitModel.append(row)
 523                         nameLength = max(nameLength, len(key))
 524                 self._sortedUnitModel.sort_column_changed()
 525
 526                 if constants.FORCE_HILDON_LIKE:
 527                         maxCatCharWidth = int(nameLength * 0.75)
 528                         maxCharWidth = int(len("nibble | hexit | quadbit") * 0.75)
 529                         charWidth = min(maxCatCharWidth, maxCharWidth)
 530                         self._unitsNameRenderer.set_property("width-chars", charWidth)
 531
 532                 self._select_default_unit()
 533
 534         def _clear_visible_unit_data(self):
 535                 self._unitDescription.get_buffer().set_text("")
 536                 self._unitName.set_text('')
 537                 self._unitValue.set_text('')
 538                 self._unitSymbol.set_text('')
 539
 540                 self._previousUnitName.set_text('')
 541                 self._previousUnitValue.set_text('')
 542                 self._previousUnitSymbol.set_text('')
 543
 544                 self._unitModel.clear()
 545
 546         def _select_default_unit(self):
 547                 # Restore the previous historical settings of previously selected units
 548                 # in this newly selected category
 549                 defaultPrimary = unit_data.get_base_unit(self._selectedCategoryName)
 550                 defaultSecondary = ""
 551                 if self._selectedCategoryName in self._defaultUnitForCategory:
 552                         if self._defaultUnitForCategory[self._selectedCategoryName][0]:
 553                                 defaultPrimary = self._defaultUnitForCategory[self._selectedCategoryName][0]
 554                         if self._defaultUnitForCategory[self._selectedCategoryName][1]:
 555                                 defaultSecondary = self._defaultUnitForCategory[self._selectedCategoryName][1]
 556
 557                 units = unit_data.get_units(self._selectedCategoryName)
 558
 559                 #Restore oldest selection first.
 560                 if defaultPrimary:
 561                         try:
 562                                 unitIndex = units.index(defaultPrimary)
 563                         except ValueError:
 564                                 unitIndex = 0
 565                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 566
 567                 #Restore newest selection second.
 568                 if defaultSecondary:
 569                         try:
 570                                 unitIndex = units.index(defaultSecondary)
 571                         except ValueError:
 572                                 unitIndex = 0
 573                         self._unitsView.set_cursor(unitIndex, self._unitNameColumn, True)
 574
 575                 # select the text so user can start typing right away
 576                 self._unitValue.grab_focus()
 577                 self._unitValue.select_region(0, -1)
 578
 579         def _sanitize_value(self, userEntry):
 580                 if self._selectedCategoryName == "Computer Numbers":
 581                         if userEntry == '':
 582                                 value = '0'
 583                         else:
 584                                 value = userEntry
 585                 else:
 586                         if userEntry == '':
 587                                 value = 0.0
 588                         else:
 589                                 value = float(userEntry)
 590                 return value
 591
 592         def _select_sort_column(self, col):
 593                 #Determine which column requires sorting
 594                 columns = self._get_column_sort_stuff()
 595                 for columnIndex, (maybeCol, directionName, col_cmp) in enumerate(columns):
 596                         if col is maybeCol:
 597                                 direction = getattr(self, directionName)
 598                                 gtkDirection = gtk.SORT_ASCENDING if direction else gtk.SORT_DESCENDING
 599
 600                                 # cause a sort
 601                                 self._sortedUnitModel.set_sort_column_id(columnIndex, gtkDirection)
 602
 603                                 # set the visual for sorting
 604                                 col.set_sort_indicator(True)
 605                                 col.set_sort_order(not direction)
 606
 607                                 setattr(self, directionName, not direction)
 608                                 break
 609                         else:
 610                                 maybeCol.set_sort_indicator(False)
 611                 else:
 612                         assert False, "Unknown column: %s" % (col.get_title(), )
 613
 614         def set_orientation(self, orientation):
 615                 if orientation == gtk.ORIENTATION_VERTICAL:
 616                         hildonize.window_to_portrait(self._mainWindow)
 617                         self.__isPortrait = True
 618                 elif orientation == gtk.ORIENTATION_HORIZONTAL:
 619                         hildonize.window_to_landscape(self._mainWindow)
 620                         self.__isPortrait = False
 621                 else:
 622                         raise NotImplementedError(orientation)
 623
 624         def get_orientation(self):
 625                 return gtk.ORIENTATION_VERTICAL if self.__isPortrait else gtk.ORIENTATION_HORIZONTAL
 626
 627         def _toggle_rotate(self):
 628                 if self.__isPortrait:
 629                         self.set_orientation(gtk.ORIENTATION_HORIZONTAL)
 630                 else:
 631                         self.set_orientation(gtk.ORIENTATION_VERTICAL)
 632
 633         @gtk_toolbox.log_exception(_moduleLogger)
 634         def _on_key_press(self, widget, event, *args):
 635                 """
 636                 @note Hildon specific
 637                 """
 638                 RETURN_TYPES = (gtk.keysyms.Return, gtk.keysyms.ISO_Enter, gtk.keysyms.KP_Enter)
 639                 if (
 640                         event.keyval == gtk.keysyms.F6 or
 641                         event.keyval in RETURN_TYPES and event.get_state() & gtk.gdk.CONTROL_MASK
 642                 ):
 643                         if self._isFullScreen:
 644                                 self._mainWindow.unfullscreen()
 645                         else:
 646                                 self._mainWindow.fullscreen()
 647                 elif event.keyval == gtk.keysyms.f and event.get_state() & gtk.gdk.CONTROL_MASK:
 648                         if not hildonize.GTK_MENU_USED:
 649                                 self._toggle_find()
 650                 elif event.keyval == gtk.keysyms.p and event.get_state() & gtk.gdk.CONTROL_MASK:
 651                         self._find_previous()
 652                 elif event.keyval == gtk.keysyms.n and event.get_state() & gtk.gdk.CONTROL_MASK:
 653                         self._find_next()
 654                 elif event.keyval == gtk.keysyms.o and event.get_state() & gtk.gdk.CONTROL_MASK:
 655                         self._toggle_rotate()
 656                 elif (
 657                         event.keyval in (gtk.keysyms.w, gtk.keysyms.q) and
 658                         event.get_state() & gtk.gdk.CONTROL_MASK
 659                 ):
 660                         self._mainWindow.destroy()
 661                 elif event.keyval == gtk.keysyms.l and event.get_state() & gtk.gdk.CONTROL_MASK:
 662                         with open(constants._user_logpath_, "r") as f:
 663                                 logLines = f.xreadlines()
 664                                 log = "".join(logLines)
 665                                 self._clipboard.set_text(str(log))
 666
 667         @gtk_toolbox.log_exception(_moduleLogger)
 668         def _on_toggle_search(self, *args):
 669                 self._toggle_find()
 670
 671         @gtk_toolbox.log_exception(_moduleLogger)
 672         def _on_browse_key_press(self, widget, event, *args):
 673                 if event.keyval == gtk.keysyms.uparrow or event.keyval == gtk.keysyms.Up:
 674                         index, column = self._unitsView.get_cursor()
 675                         newIndex = max(index[0]-1, 0)
 676                         path = (newIndex, )
 677                         self._unitsView.set_cursor(path, column, True)
 678                         self._unitsView.scroll_to_cell(path, column, False, 0, 0)
 679                         return True # override default behavior
 680                 elif event.keyval == gtk.keysyms.downarrow or event.keyval == gtk.keysyms.Down:
 681                         index, column = self._unitsView.get_cursor()
 682                         newIndex = min(index[0]+1, len(self._unitModel)-1)
 683                         path = (newIndex, )
 684                         self._unitsView.set_cursor(path, column, True)
 685                         self._unitsView.scroll_to_cell(path, column, False, 0, 0)
 686                         return True # override default behavior
 687
 688         @gtk_toolbox.log_exception(_moduleLogger)
 689         def _on_window_state_change(self, widget, event, *args):
 690                 """
 691                 @note Hildon specific
 692                 """
 693                 if event.new_window_state & gtk.gdk.WINDOW_STATE_FULLSCREEN:
 694                         self._isFullScreen = True
 695                 else:
 696                         self._isFullScreen = False
 697
 698         @gtk_toolbox.log_exception(_moduleLogger)
 699         def _on_findEntry_changed(self, *args):
 700                 """
 701                 Clear out find results since the user wants to look for something new
 702                 """
 703                 self._clear_find()
 704
 705         @gtk_toolbox.log_exception(_moduleLogger)
 706         def _on_find_activate(self, *args):
 707                 self._find_next()
 708                 self._findButton.grab_focus()
 709
 710         @gtk_toolbox.log_exception(_moduleLogger)
 711         def _on_click_menu_filter(self, button, col):
 712                 self._select_sort_column(col)
 713
 714         @gtk_toolbox.log_exception(_moduleLogger)
 715         def _on_click_unit_column(self, col):
 716                 """
 717                 Sort the contents of the col when the user clicks on the title.
 718                 """
 719                 self._select_sort_column(col)
 720
 721         @gtk_toolbox.log_exception(_moduleLogger)
 722         def _on_category_selector_clicked(self, *args):
 723                 currenntIndex = unit_data.UNIT_CATEGORIES.index(self._selectedCategoryName)
 724                 newIndex = hildonize.touch_selector(
 725                         self._mainWindow,
 726                         "Categories",
 727                         unit_data.UNIT_CATEGORIES,
 728                         currenntIndex,
 729                 )
 730
 731                 selectedCategoryName = unit_data.UNIT_CATEGORIES[newIndex]
 732                 self._categorySelectionButton.get_child().set_markup("<big>%s</big>" % selectedCategoryName)
 733                 self._switch_category(selectedCategoryName)
 734
 735         @gtk_toolbox.log_exception(_moduleLogger)
 736         def _on_click_category(self, *args):
 737                 selected, iter = self._categoryView.get_selection().get_selected()
 738                 if iter is None:
 739                         # User is typing in an invalid string, not selecting any category
 740                         return
 741                 selectedCategory = self._categoryModel.get_value(iter, 0)
 742                 self._switch_category(selectedCategory)
 743
 744         @gtk_toolbox.log_exception(_moduleLogger)
 745         def _on_click_unit(self, *args):
 746                 selected, iter = self._unitsView.get_selection().get_selected()
 747                 selected_unit = selected.get_value(iter, self.UNITS_NAME_IDX)
 748                 unit_spec = self._unitDataInCategory[selected_unit]
 749
 750                 showSymbol = False
 751
 752                 if self._unitName.get_text() != selected_unit:
 753                         self._previousUnitName.set_text(self._unitName.get_text())
 754                         self._previousUnitValue.set_text(self._unitValue.get_text())
 755                         self._previousUnitSymbol.set_text(self._unitSymbol.get_text())
 756                         if self._unitSymbol.get_text():
 757                                 showSymbol = True
 758
 759                 self._unitName.set_text(selected_unit)
 760                 self._unitValue.set_text(selected.get_value(iter, self.UNITS_VALUE_IDX))
 761                 buffer = self._unitDescription.get_buffer()
 762                 buffer.set_text(unit_spec[2])
 763                 self._unitSymbol.set_text(unit_spec[1]) # put units into label text
 764                 if unit_spec[1]:
 765                         showSymbol = True
 766                 else:
 767                         showSymbol = False
 768
 769                 if showSymbol:
 770                         self._unitSymbol.show()
 771                         self._previousUnitSymbol.show()
 772                 else:
 773                         self._unitSymbol.hide()
 774                         self._previousUnitSymbol.hide()
 775
 776                 if self._unitValue.get_text() == '':
 777                         if self._selectedCategoryName == "Computer Numbers":
 778                                 self._unitValue.set_text("0")
 779                         else:
 780                                 self._unitValue.set_text("0.0")
 781
 782                 self._defaultUnitForCategory[self._selectedCategoryName] = [
 783                         self._unitName.get_text(), self._previousUnitName.get_text()
 784                 ]
 785
 786                 # select the text so user can start typing right away
 787                 self._unitValue.grab_focus()
 788                 self._unitValue.select_region(0, -1)
 789
 790         @gtk_toolbox.log_exception(_moduleLogger)
 791         def _on_unit_value_changed(self, *args):
 792                 if self._unitName.get_text() == '':
 793                         return
 794                 if not self._unitValue.is_focus():
 795                         return
 796
 797                 #retrieve the conversion function and value from the selected unit
 798                 value = self._sanitize_value(self._unitValue.get_text())
 799                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 800                 base = func.to_base(value, arg)
 801
 802                 #point to the first row
 803                 for row in self._unitModel:
 804                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 805                         newValue = func.from_base(base, arg)
 806
 807                         newValueDisplay = str(newValue)
 808                         integerDisplay, fractionalDisplay = split_number(newValue)
 809
 810                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 811                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 812                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 813
 814                 # Update the secondary unit entry
 815                 if self._previousUnitName.get_text() != '':
 816                         func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 817                         self._previousUnitValue.set_text(str(func.from_base(base, arg, )))
 818
 819                 self._sortedUnitModel.sort_column_changed()
 820                 self._refresh_columns()
 821
 822         @gtk_toolbox.log_exception(_moduleLogger)
 823         def _on_previous_unit_value_changed(self, *args):
 824                 if self._previousUnitName.get_text() == '':
 825                         return
 826                 if not self._previousUnitValue.is_focus():
 827                         return
 828
 829                 #retrieve the conversion function and value from the selected unit
 830                 value = self._sanitize_value(self._previousUnitValue.get_text())
 831                 func, arg = self._unitDataInCategory[self._previousUnitName.get_text()][0]
 832                 base = func.to_base(value, arg)
 833
 834                 #point to the first row
 835                 for row in self._unitModel:
 836                         func, arg = self._unitDataInCategory[row[self.UNITS_NAME_IDX]][0]
 837                         newValue = func.from_base(base, arg)
 838
 839                         newValueDisplay = str(newValue)
 840                         integerDisplay, fractionalDisplay = split_number(newValue)
 841
 842                         row[self.UNITS_VALUE_IDX] = newValueDisplay
 843                         row[self.UNITS_INTEGER_IDX] = integerDisplay
 844                         row[self.UNITS_FRACTION_IDX] = fractionalDisplay
 845
 846                 # Update the primary unit entry
 847                 func, arg = self._unitDataInCategory[self._unitName.get_text()][0]
 848                 self._unitValue.set_text(str(func.from_base(base, arg, )))
 849
 850                 self._sortedUnitModel.sort_column_changed()
 851                 self._refresh_columns()
 852
 853         @gtk_toolbox.log_exception(_moduleLogger)
 854         def _on_about_clicked(self, a):
 855                 dlg = gtk.AboutDialog()
 856                 dlg.set_name(constants.__pretty_app_name__)
 857                 dlg.set_version("%s-%d" % (constants.__version__, constants.__build__))
 858                 dlg.set_copyright("Copyright 2009 - GPL")
 859                 dlg.set_comments("")
 860                 dlg.set_website("http://unihedron.com/projects/gonvert/gonvert.php")
 861                 dlg.set_authors(["Anthony Tekatch <anthony@unihedron.com>", "Ed Page <eopage@byu.net> (Blame him for the most recent bugs)"])
 862                 dlg.run()
 863                 dlg.destroy()
 864
 865         @gtk_toolbox.log_exception(_moduleLogger)
 866         def _on_user_exit(self, *args):
 867                 try:
 868                         self._save_settings()
 869                 except Exception:
 870                         pass
 871                 finally:
 872                         gtk.main_quit()
 873
 874
 875 def run_gonvert():
 876         gtk.gdk.threads_init()
 877         if hildonize.IS_HILDON_SUPPORTED:
 878                 gtk.set_application_name(constants.__pretty_app_name__)
 879         handle = Gonvert()
 880         if not constants.PROFILE_STARTUP:
 881                 gtk.main()
 882
 883
 884 if __name__ == "__main__":
 885         logging.basicConfig(level = logging.DEBUG)
 886         try:
 887                 os.makedirs(constants._data_path_)
 888         except OSError, e:
 889                 if e.errno != 17:
 890                         raise
 891
 892         run_gonvert()