python 如何动态更新Omniverse扩展的下拉菜单文本？

kb5ga3dv 于 2023-05-21 发布在 Python

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我正在使用内置的omni库为Omniverse Create创建一个自定义扩展。我有一个简单的窗口，它创建了一个下拉菜单（CollapsableFrame），其中包含一个TreeView：

self._window = ui.Window("My Window", width = 300, height = 200)
self._items_count = 0

with self._window.frame:
    with ui.VStack():
        with ui.CollapsableFrame(f'My List {self._items_count} items:', collapsed = True):
            tree_view = ui.TreeView(
                self._model_all_usd,
                root_visible = False,
                header_visible = False,
                columns_resizable = True,
                column_widths = [ui.Fraction(0.4), ui.Fraction(0.3)],
                style = {"TreeView.Item": {"margin": 4}})

我也有一个函数，我正在使用它来监听选择的变化：

def _on_stage_event(self, event):
    if event.type == int(omni.usd.StageEventType.SELECTION_CHANGED):
        // do stuff
        self._items_count += 1    # increase count whenever the selection changes

我目前拥有的将更新self._items_count值，但下拉文本不会更新。我如何才能做到这一点？

python

来源：https://stackoverflow.com/questions/76297860/how-can-i-dynamically-update-the-dropdown-menu-text-for-an-omniverse-extension

1条答案

按热度按时间

yfjy0ee71#

只需要引用CollapsableFrame：

with self._window.frame:
    with ui.VStack():
        self._dropdown_frame = ui.CollapsableFrame(f'My List {self._items_count} items:', collapsed = True)
        with self._dropdown_frame:
            tree_view = ui.TreeView(
                self._model_all_usd,
                root_visible = False,
                header_visible = False,
                columns_resizable = True,
                column_widths = [ui.Fraction(0.4), ui.Fraction(0.3)],
                style = {"TreeView.Item": {"margin": 4}})

然后通过修改title属性进行更新：

def _on_stage_event(self, event):
    if event.type == int(omni.usd.StageEventType.SELECTION_CHANGED):
        // do stuff
        self._items_count += 1    # Increase count whenever the selection changes
        self._dropdown_frame.title = f'My List {self._items_count} items:'

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python 如何动态更新Omniverse扩展的下拉菜单文本？

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