[英]Elements' sizes don't update on application loading in Kivy
我有on_size()
事件,它在我調整窗口大小時起作用,但我不能使它在正確的應用程序加載上工作(它工作,但不是必須):
from random import random, randint
import kivy
kivy.require('1.8.0')
from kivy.config import Config
Config.set('graphics', 'fullscreen', '0')
Config.set('graphics', 'width', 640)
Config.set('graphics', 'height', 480)
Config.set('graphics', 'position', 'custom')
Config.set('graphics', 'top', 40)
Config.set('graphics', 'left', 40)
from kivy.app import App
from kivy.uix.layout import Layout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.graphics import Color, Line, Rectangle
class Main(BoxLayout):
side_padding = 20
def __init__(self, **kwargs):
super(Main, self).__init__(**kwargs)
self.size = (0, 0) # Doesn't help.
self.on_size() # Doesn't help.
def on_size(self, *args):
left, middle, right = self.ids.left, self.ids.middle, self.ids.right
left.width = max([x.texture_size[0] for x in left.children]) + self.side_padding
right.width = max([x.texture_size[0] for x in right.children]) + self.side_padding
available_space = self.width - left.width - right.width
if available_space > self.height:
middle.size = (self.height, self.height)
extra = (self.width - self.height - left.width - right.width) // 2
left.width += extra
right.width += extra
else:
middle.size = (available_space, available_space)
class SidePanel(BoxLayout):
def __init__(self, **kwargs):
super(SidePanel, self).__init__(**kwargs)
class GameField(Layout):
def __init__(self, **kwargs):
super(GameField, self).__init__(**kwargs)
self.array_size = randint(4, 8)
self.bind(pos=self.update, size=self.update)
self.update()
def update(self, *args):
s_padding = 1 / 16
s_sq_size = 1 - 2 * s_padding
self.canvas.clear()
with self.canvas:
block_size = self.width / self.array_size
sq_size = block_size * s_sq_size
padding = block_size * s_padding
Color(1, 1, 1)
for j in range(self.array_size):
for i in range(self.array_size):
Rectangle(pos=(self.x + padding + i * block_size, self.y + padding + j * block_size),
size=(sq_size, sq_size))
for i in range(self.array_size + 1):
shift = self.width * i / self.array_size
Line(points=(self.x, self.y + shift, self.x + self.width, self.y + shift))
Line(points=(self.x + shift, self.y, self.x + shift, self.y + self.height))
def on_touch_up(self, touch):
self.array_size = randint(4, 8)
self.update()
class Application(App):
def build(self):
return Main()
if __name__ == '__main__':
Application().run()
* .kv:
#:kivy 1.8.0
<Main>:
orientation: 'horizontal'
canvas:
Color:
rgb: 1, 1, .9
Rectangle:
pos: self.pos
size: self.size
SidePanel:
id: left
Label:
size_hint_y: None
color: 0, 0, 0, 1
text: 'Score'
Label:
color: 0, 0, 0, 1
text: 'Event log log log loooooooooog'
Label:
color: 0, 0, 0, 1
text: 'Event log log log\n123'
Label:
color: 0, 0, 0, 1
text: '35mdbj65 qewr'
Label:
color: 0, 0, 0, 1
text: '3qht6ju7ustju'
GameField:
id: middle
SidePanel:
id: right
Button:
size_hint_y: None
text: 'Menu'
Label:
color: 0, 0, 0, 1
text: 'Bonuses bonuses'
<SidePanel>:
orientation: 'vertical'
size_hint_x: None
size: self.size
<GameField>:
pos_hint: {'center_y': .5}
size_hint: None, None
canvas.before:
Color:
rgb: .9, .9, .9
Rectangle:
pos: self.pos
size: self.size
也許有一些錯誤?
當我根據其中的標簽和按鈕更新我班級的孩子的大小時,我已經添加了on_size
事件:
def on_size(self, *args):
self.parent.parent.on_size()
class SideLabel(Label):
on_size = on_size
class SideButton(Button):
on_size = on_size
而且我已經用kv替換了這些類上的Buttons和Labels。 它似乎現在正常工作。
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