python类Label()的实例源码

def __init__(self, **kwargs):
        super().__init__(**kwargs)

        if 'background_color' not in kwargs:
            self.background_color = 'white'

        if 'frame' not in kwargs:
            self.width = min(ui.get_window_size()[0] * 0.8, 700)
            self.height = ui.get_window_size()[1] * 0.8

        self._tableview = ui.TableView()
        self._textfield = ui.TextField()
        self._help_label = ui.Label()
        self._datasource = None
        self._handlers = None
        self.shift_enter_enabled = True
        self.did_select_item_action = None

        tf = LayoutProxy(self._textfield)
        self.add_subview(tf)
        tf.layout.align_left_with_superview.equal = 8
        tf.layout.align_top_with_superview.equal = 8
        tf.layout.align_right_with_superview.equal = -8
        tf.layout.height.equal = 31
        tf.delegate = self

        tv = LayoutProxy(self._tableview)
        self.add_subview(tv)
        tv.layout.align_left_to(tf).equal = 0
        tv.layout.align_right_to(tf).equal = 0
        tv.layout.top_offset_to(tf).equal = 8
        tv.allows_selection = True
        tv.allows_multiple_selection = False

        hl = LayoutProxy(self._help_label)
        self.add_subview(hl)
        hl.layout.align_left_to(tv).equal = 0
        hl.layout.align_right_to(tv).equal = 0
        hl.layout.top_offset_to(tv).equal = 8
        hl.layout.align_bottom_with_superview.equal = -8
        hl.layout.height.max = 66
        hl.font = ('<system>', 13.0)
        hl.alignment = ui.ALIGN_CENTER
        hl.text_color = (0, 0, 0, 0.5)
        hl.number_of_lines = 2

        if is_in_hardware_keyboard_mode:
            tf.view.begin_editing()

        self._register_key_event_handlers()

def tableview_cell_for_row(self, tv, section, row):
        if section == self._folder_section:
            item = self.items[row]
            node = item['node']
        else:
            item = self._files[row]
            node = None

        cell = ui.TableViewCell()

        cvb = cell.content_view.bounds

        x = 15 + cvb.x + item['level'] * 15

        if node and node.children_exists:
            image_view = ui.ImageView()
            image_view.frame = (x, 10, 24, 24)
            image_view.image = ui.Image.named(
                'iob:arrow_down_b_24' if node.path in self._expanded_node_paths else 'iob:arrow_right_b_24'
            )
            cell.content_view.add_subview(image_view)

        x += 24 + 8

        image_view = ui.ImageView()
        image_view.frame = (x, 10, 24, 24)
        image_view.image = ui.Image.named('iob:folder_24' if node else 'iob:document_24')
        cell.content_view.add_subview(image_view)

        x += 24 + 8

        title_label = ui.Label(flex='W')
        title_label.text = item['title']
        title_label.size_to_fit()
        title_label.frame = (
            x, cvb.y + (cvb.height - title_label.height) / 2.0,
            cvb.width - (x - cvb.x) - 8, title_label.height
        )
        cell.content_view.add_subview(title_label)

        separator = ui.View(flex='W')
        separator.background_color = (0, 0, 0, 0.05)
        x = title_label.frame.x - 12 - 8
        separator.frame = (
            x, cvb.y + cvb.height - 1,
            cvb.width - (x - cvb.x), 1
        )
        cell.content_view.add_subview(separator)

        cell_objc = ObjCInstance(cell)
        cell_objc.setSelectionStyle(0)

        return cell