Python Kivy布局高度以适应子部件'；s高度
我想创建一个布局，其中我有一些类似于BoxLayout的东西，使我能够在布局中创建“行”，并且在每个“行”中，我想使用另一个BoxLayout中的某种东西来创建“列” 柱不需要均匀分布。例如，我想创建一个BoxLayout，其中一列带有方形图像，另一列占据剩余可用宽度 请参见“我的要点”中的代码和屏幕截图： 我在上面的代码中完成了基本结构，但除此之外，我希望BoxLayout的高度与孩子们的高度相适应。 实现这一目标的最佳方法是什么Python Kivy布局高度以适应子部件'；s高度,python,user-interface,kivy,Python,User Interface,Kivy,我想创建一个布局，其中我有一些类似于BoxLayout的东西，使我能够在布局中创建“行”，并且在每个“行”中，我想使用另一个BoxLayout中的某种东西来创建“列” 柱不需要均匀分布。例如，我想创建一个BoxLayout，其中一列带有方形图像，另一列占据剩余可用宽度 请参见“我的要点”中的代码和屏幕截图： 我在上面的代码中完成了基本结构，但除此之外，我希望BoxLayout的高度与孩子们的高度相适应。 实现这一目标的最佳方法是什么 谢谢 不要使用BoxLayout，使用高度为height:se
谢谢 不要使用BoxLayout，使用高度为
height:self.minimum\u heightsize\u hint\u y:Noneheight:some\u numberGridLayout# kv file or string
<Resizing_GridLayout@GridLayout>:
cols: 1
row_force_default: True
foo: [self.rows_minimum.update({i: x.height}) for i, x in enumerate(reversed(list(self.children)))]
# kv file or string for when above goes funky
<ResizingRow_GridLayout@GridLayout>:
cols: 1
height: sum([c.height for c in self.children])
# ... assuming above have been set, bellow maybe within another layout
Resizing_GridLayout:
ResizingRow_GridLayout:
Label:
height: 30
text: 'Label One'
TextInput:
height: 30
multiline: False
write_tab: False
hint_text: 'Insert one liner'
ResizingRow_GridLayout:
Label:
height: 45
text: 'Label two'
Button:
text: 'Button One'
height: 60
GridLayout:
rows: 1
height: 25
Button:
text: 'Button Two'
Button:
text: 'Button three'
更新
#!/usr/bin/env python
from collections import OrderedDict
from kivy.uix.gridlayout import GridLayout
from kivy.clock import Clock
class Adaptive_GridLayout(GridLayout):
"""
Adaptive height and row heights for grid layouts.
Note this should not be used as a root layout and '_refresh_grids_y_dimension()' method should be used by
children widgets that change height to update all attached instances of Adaptive_GridLayout (this layout).
Copyright AGPL-3.0 2019 S0AndS0
"""
def __init__(self, grow_cols = False, grow_rows = False, **kwargs):
super(Adaptive_GridLayout, self).__init__(**kwargs)
self.grow_cols = grow_cols
self.grow_rows = grow_rows
self.trigger_refresh_y_dimension = Clock.create_trigger(lambda _: self._refresh_grids_y_dimension(), 0)
def _yield_tallest_of_each_row(self):
""" Yields tallest child of each row within gridlayout. """
current_tallest = None
for i, c in enumerate(list(reversed(self.children))):
if current_tallest is None:
current_tallest = c
if c.height > current_tallest.height:
current_tallest = c
## Should work around grids without value for 'cols'
if self.cols is None or self.cols is 0:
yield current_tallest
current_tallest = None
## Reached last item of current row... Fizzbuzz!
elif ((i + 1) % self.cols == 0) is True:
yield current_tallest
current_tallest = None
def _calc_child_padding_y(self, child):
""" Returns total padding for a given child. """
## May be faster than asking permission with an if statement as most widgets seem to have padding
try:
child_padding = child.padding
except AttributeError as e:
child_padding = [0]
len_child_padding = len(child_padding)
if len_child_padding is 1:
padding = child_padding[0] * 2
elif len_child_padding is 2:
padding = child_padding[1] * 2
elif len_child_padding > 2:
padding = child_padding[1] + child_padding[3]
else:
padding = 0
return padding
def _calc_min_height(self):
""" Returns total height required to display tallest children of each row plus spacing between widgets. """
min_height = 0
for c in self._yield_tallest_of_each_row():
min_height += c.height + self._calc_child_padding_y(child = c) + self.spacing[1]
return min_height
def _calc_rows_minimum(self):
""" Returns ordered dictionary of how high each row should be to accommodate tallest children of each row. """
rows_minimum = OrderedDict()
for i, c in enumerate(self._yield_tallest_of_each_row()):
rows_minimum.update({i: c.height + self._calc_child_padding_y(child = c)})
return rows_minimum
def _refresh_height(self):
""" Resets 'self.height' using value returned by '_calc_min_height' method. """
self.height = self._calc_min_height()
def _refresh_rows_minimum(self):
""" Resets 'self.rows_minimum' using value returned by '_calc_rows_minimum' method. """
self.rows_minimum = self._calc_rows_minimum()
def _refresh_grids_y_dimension(self):
""" Updates 'height' and 'rows_minimum' first for spawn, then for self, and finally for any progenitors. """
spawn = [x for x in self.walk(restrict = True) if hasattr(x, '_refresh_grids_y_dimension') and x is not self]
for item in spawn:
item._refresh_rows_minimum()
item._refresh_height()
self._refresh_rows_minimum()
self._refresh_height()
progenitors = [x for x in self.walk_reverse() if hasattr(x, '_refresh_grids_y_dimension') and x is not self]
for progenitor in progenitors:
progenitor._refresh_rows_minimum()
progenitor._refresh_height()
def on_children(self, instance, value):
""" If 'grow_cols' or 'grow_rows' is True this will grow layout that way if needed instead of erroring out. """
smax = self.get_max_widgets()
widget_count = len(value)
if smax and widget_count > smax:
increase_by = widget_count - smax
if self.grow_cols is True:
self.cols += increase_by
elif self.grow_rows is True:
self.rows += increase_by
super(Adaptive_GridLayout, self).on_children(instance, value)
def on_parent(self, instance, value):
""" Some adjustments maybe needed to get top row behaving on all platforms. """
self.trigger_refresh_y_dimension()
上面是我发布的一个项目，它来自一个更大的项目，可能适合也可能不适合那些希望在Python方面有更多逻辑来更新维度的人。检查
自述文件以了解在另一个项目中安装的提示。对于我来说，使用高度为self.minimum\u height的GridLayout，然后为每个子小部件设置手动大小（size\u hint\u y:None和height:some\u number），使小部件定位到根窗口的底部。真的不知道为什么
但是，使用高度为root.height的GridLayout，然后为每个子小部件设置手动大小（size\u hint\u y:None和height:some\u number），可以得到正确的顶部锚定小部件。为什么同时需要height和size\u hint？@糟糕，我认为您还需要在GridLayout
中设置size\u hint\u y:None
，不仅在children@zwep，因为kivy尊重大小提示
而不是大小
，这意味着与直接像素大小相关的所有内容（包括高度
和宽度
）都将被忽略，除非相应的大小提示
设置为无
。Kivy是第一个响应构建的，因此大小提示是优先考虑的。如果resizinggrow\u GridLayout
包含一个动态向自身添加子项的小部件，这似乎不起作用。我可能误解了你的意思。我需要先了解self.calc_height（）24kvfoo:stuff71defdef calc_height（self）：…self.cal_height（）instance.cal_height（）self。在ResizingFrame
中触发刷新维度（）Adaptive\u GridLayout\u refresh\u height（）填充self.size\u hint\u y=None\u init\u（）行有关。