#!/usr/bin/env python'''Stock Item and Icon BrowserThis source code for this demo doesn't demonstrate anything particularlyuseful in applications. The purpose of the "demo" is just to provide ahandy place to browse the available stock icons and stock items.'''# pygtk version: Maik Hertha <maik.hertha@berlin.de>import gobjectimport gtkimport redef id_to_macro(stock_id):    if stock_id == '':        return ''    if stock_id.startswith('gtk'):        # gtk-foo-bar -> gtk.STOCK_FOO_BAR        macro = 'gtk.STOCK' + \            re.sub('-([^-]+)', lambda m:('_' + m.group(1).upper()), stock_id[3:])    else:        # demo-gtk-logo -> DEMO_GTK_LOGO as with custom icon-factories        macro = re.sub('([^-]+)-?', lambda m:('_' + m.group(1).upper()), stock_id)        macro = macro[1:]  # there is a leading '_' always    return  macroclass StockItemInfo(object):    def __init__(self, stock_id=''):        self.stock_id = stock_id        self.stock_item = None        self.small_icon = None        self.macro = id_to_macro(stock_id)        self.accel_str = ''class StockItemDisplay(object):    def __init__(self):        self.type_label = None        self.macro_label = None        self.id_label = None        self.label_accel_label = None        self.icon_image = Nonedef get_largest_size(stockid):    ''' Finds the largest size at which the given image stock id is        available. This would not be useful for a normal application.    '''    set = gtk.icon_factory_lookup_default(stockid)    best_size = gtk.ICON_SIZE_INVALID    best_pixels = 0    sizes = set.get_sizes()    n_sizes = len(sizes)    i = 0    while(i < n_sizes):        width, height = gtk.icon_size_lookup(sizes[i])        if(width * height > best_pixels):            best_size = sizes[i]            best_pixels = width * height        i += 1    return best_sizedef macro_set_func_text(tree_column, cell, model, iter):    info = model.get_value(iter, 0)    cell.set_property("text", info.macro)def id_set_func(tree_column, cell, model, iter):    info = model.get_value(iter, 0)    cell.set_property("text", info.stock_id)def accel_set_func(tree_column, cell, model, iter):    info = model.get_value(iter, 0)    cell.set_property("text", info.accel_str)def label_set_func(tree_column, cell, model, iter):    info = model.get_value(iter, 0)    cell.set_property("text", info.stock_item[1])class StockItemAndIconBrowserDemo(gtk.Window):    def __init__(self, parent=None):        gtk.Window.__init__(self)        try:            self.set_screen(parent.get_screen())        except AttributeError:            self.connect('destroy', lambda *w: gtk.main_quit())        self.set_title(self.__class__.__name__)        self.set_default_size(-1, 500)        self.set_border_width(8)        hbox = gtk.HBox(False, 8)        self.add(hbox)        sw = gtk.ScrolledWindow()        sw.set_shadow_type(gtk.SHADOW_ETCHED_IN)        sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)        hbox.pack_start(sw, False, False, 0)        model = self.__create_model()        treeview = gtk.TreeView(model)        sw.add(treeview)        column = gtk.TreeViewColumn()        column.set_title("Macro")        cell_renderer = gtk.CellRendererPixbuf()        column.pack_start(cell_renderer, False)        column.set_attributes(cell_renderer, stock_id=1)        cell_renderer = gtk.CellRendererText()        column.pack_start(cell_renderer, True)        column.set_cell_data_func(cell_renderer, macro_set_func_text)        treeview.append_column(column)        cell_renderer = gtk.CellRendererText()        treeview.insert_column_with_data_func(-1, "Label", cell_renderer, label_set_func)        cell_renderer = gtk.CellRendererText()        treeview.insert_column_with_data_func(-1, "Accel", cell_renderer, accel_set_func)        cell_renderer = gtk.CellRendererText()        treeview.insert_column_with_data_func(-1, "ID", cell_renderer, id_set_func)        align = gtk.Alignment(0.5, 0.0, 0.0, 0.0)        hbox.pack_end(align, False, False, 0)        frame = gtk.Frame("Selected Item")        align.add(frame)        vbox = gtk.VBox(False, 8)        vbox.set_border_width(4)        frame.add(vbox)        display = StockItemDisplay()        treeview.set_data("stock-display", display)        display.type_label  = gtk.Label()        display.macro_label = gtk.Label()        display.id_label    = gtk.Label()        display.label_accel_label = gtk.Label()        display.icon_image  = gtk.Image(); # empty image        vbox.pack_start(display.type_label, False, False, 0)        vbox.pack_start(display.icon_image, False, False, 0)        vbox.pack_start(display.label_accel_label, False, False, 0)        vbox.pack_start(display.macro_label, False, False, 0)        vbox.pack_start(display.id_label, False, False, 0)        selection = treeview.get_selection()        selection.set_mode(gtk.SELECTION_SINGLE)        selection.connect("changed", self.on_selection_changed)        self.show_all()    def __create_model(self):        store = gtk.ListStore(            gobject.TYPE_PYOBJECT,            gobject.TYPE_STRING)        ids = gtk.stock_list_ids()        ids.sort()        for data in ids:            info = StockItemInfo(stock_id=data)            stock_item = gtk.stock_lookup(data)            if stock_item:                info.stock_item = stock_item            else:                # stock_id, label, modifier, keyval, translation_domain                info.stock_item =('', '', 0, 0, '')            # only show icons for stock IDs that have default icons            icon_set = gtk.icon_factory_lookup_default(info.stock_id)            if icon_set is None:                info.small_icon = None            else:                # See what sizes this stock icon really exists at                sizes = icon_set.get_sizes()                n_sizes = len(sizes)                # Use menu size if it exists, otherwise first size found                size = sizes[0];                i = 0;                while(i < n_sizes):                    if(sizes[i] == gtk.ICON_SIZE_MENU):                        size = gtk.ICON_SIZE_MENU                        break                    i += 1                info.small_icon = self.render_icon(info.stock_id, size)                if(size != gtk.ICON_SIZE_MENU):                    # Make the result the proper size for our thumbnail                    w, h = gtk.icon_size_lookup(gtk.ICON_SIZE_MENU)                    scaled = info.small_icon.scale_simple(w, h, 'bilinear')                    info.small_icon = scaled            if info.stock_item[3] == 0:                info.accel_str = ""            else:                info.accel_str = \                    gtk.accelerator_name(info.stock_item[3], info.stock_item[2])            iter = store.append()            store.set(iter, 0, info, 1, info.stock_id)        return store    def on_selection_changed(self, selection):        treeview = selection.get_tree_view()        display = treeview.get_data("stock-display")        model, iter = selection.get_selected()        if iter:            info = model.get_value(iter, 0)            if(info.small_icon and info.stock_item[1]):                display.type_label.set_text("Icon and Item")            elif(info.small_icon):                display.type_label.set_text("Icon Only")            elif(info.stock_item[1]):                display.type_label.set_text("Item Only")            else:                display.type_label.set_text("???????")            display.macro_label.set_text(info.macro)            display.id_label.set_text(info.stock_id)            if(info.stock_item[1]):                s = "%s %s" % (info.stock_item[1], info.accel_str)                display.label_accel_label.set_text_with_mnemonic(s)            else:                display.label_accel_label.set_text("")            if(info.small_icon):                display.icon_image.set_from_stock(info.stock_id,                                      get_largest_size(info.stock_id))            else:                display.icon_image.set_from_pixbuf(None)        else:            display.type_label.set_text("No selected item")            display.macro_label.set_text("")            display.id_label.set_text("")            display.label_accel_label.set_text("")            display.icon_image.set_from_pixbuf(None)def main():    StockItemAndIconBrowserDemo()    gtk.main()if __name__ == '__main__':    main()