[英]Need help understanding size_hint in kivy
I was was wondering if I get get an explanation on how size_hint works in Kivy. 我当时想知道我是否得到了关于size_hint如何在Kivy中工作的解释。 From my understanding, it is the relative scale from the widget, to its parent layout. 根据我的理解,它是从小部件到其父布局的相对比例。 I tried the following code: 我尝试了以下代码:
class TestFrame(GridLayout):
def __init__(self, **kwargs):
GridLayout.__init__(self, **kwargs)
self.rows = 1
self.add_widget(Label(text='test_num', size=(100, 25), size_hint=(.10, None)))
self.add_widget(Label(text='test_txt', size=(100, 25), size_hint=(.75, None)))
self.add_widget(Button(text='test_btn', size=(100, 25), size_hint=(.15, None)))
This is what I expect: 这就是我的期望:
|----------------------------------------------------------------------|
|Test_num : Test_txt : Test_btn |
Instead this is the result: 相反,这是结果:
|----------------------------------------------------------------------|
| Test_num : Test_txt : Test_btn |
I've played with different combinations of size_hint and size and end up with very similar results. 我玩过size_hint和size的不同组合,结果非常相似。 What am I missing or not understanding? 我错过了什么或不理解?
As far as I am aware, use of size_hint
AND size
are incompatible, when you set them for the same attribute, as in setting x or y for both. 据我所知,当你为同一属性设置size_hint
和size
时,使用size_hint
和size
是不兼容的,就像设置两者的x或y一样。 Use one or the other. 使用其中一个。 If you think about it, it makes sense. 如果你考虑一下,这是有道理的。 With size
, you are explicitly setting a size for the widget, and with size_hint
, you are also explicitly setting a size for the widget, just in a different way, that being relative to the widgets parent. 使用size
,您可以显式设置窗口小部件的大小,并且使用size_hint
,您还可以以不同的方式显式设置窗口小部件的大小,即相对于窗口小部件父级。 So if you use both for the same attribute, x or y, they are bound to conflict. 因此,如果将两者用于相同的属性x或y,则它们必然会发生冲突。
Exceptions here are probably when you have for instance, size_hint_y
set to None, like you do above, and then specify a size
for y. 例如,当您将size_hint_y
设置为None时,可能就像上面那样,然后指定y的size
。 Or if you set size_hint_x
to None, and only specified a size
for x. 或者,如果将size_hint_x
设置为None,并且仅指定x的size
。
However, above you have set the size
of x, and the size_hint
of x in all instances. 但是,在上面你已经设置了x的size
,并且在所有实例中都设置了x的size_hint
。
So: These should be ok 所以:这些应该没问题
size_hint=(None, .5), width=100
size_hint=(.5, None), height=100
These would conflict 这些会发生冲突
size_hint=(.6, .5), size=(34, 66)
size_hint=(None, 55), height=80
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