scroll_to（）行为

Question

我在我的kv文件中使用了scroll_to函数。它可以根据需要正确滚动，但是如果我转动鼠标滚轮，它会在scroll_to（）之前跳回原位。

任何想法，我怎样才能改进我的代码？

我的kv文件的snipplet：

MyButton:
    text: 'jump'
    on_release: scroll_content.scroll_to(jump_id_2, padding=0, animate=True)

ScrollView:
    id: scroll_content
    blah, blah, blah.......

    # values of the devices
    GridLayout:

        BoxLayout:
            id: jump_id_0
            blah, blah, blah.......

        BoxLayout:
            id: jump_id_1
            blah, blah, blah.......

        BoxLayout:
            id: jump_id_2
            blah, blah, blah.......

感谢您的帮助......

Answer 1

我设法找到了一个“解决方案”：基本上你在“内容”上设置了scroll_type， 然后点击屏幕上的某个地方......

MyButton:
    text: 'jump'
    on_release: scroll_content.scroll_to(jump_id_2, padding=0, animate=True); app.click(200)

ScrollView:
    id: scroll_content
    scroll_type: ['content']
    blah, blah, blah.......

    # values of the devices
    GridLayout:

        BoxLayout:
            id: jump_id_0
            blah, blah, blah.......

        BoxLayout:
            id: jump_id_1
            blah, blah, blah.......

        BoxLayout:
            id: jump_id_2
            blah, blah, blah.......

点击功能是：

def click(self, shift):
"""Click on the screen."""
        pt = POINT()
        ctypes.windll.user32.GetCursorPos(ctypes.byref(pt))
        ctypes.windll.user32.SetCursorPos(pt.x, pt.y + shift)
        ctypes.windll.user32.mouse_event(2, pt.x, pt.y + shift, 0, 0)
        ctypes.windll.user32.mouse_event(4, pt.x, pt.y + shift, 0, 0)
        ctypes.windll.user32.SetCursorPos(pt.x, pt.y)