Kivy输入值，用于简单计算 [英] Kivy input values for simple calculations
问题描述
我对Kivy(刚从昨天开始)很陌生，并且正在尝试创建一个足够简单的应用程序，该应用程序具有用于输入多个高度和面积值以计算体积的输入框.我找不到执行此操作的任何工作方法.到目前为止，我所得到的就是这个:
I'm quite new to Kivy (started yesterday) and am trying to create a simple enough app that has input boxes for several values of height and area to calculate volumes. I cant find any working methods of doing this. So far all I have got is this:
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
Builder.load_string("""
<MenuScreen>:
FloatLayout:
Label:
text: 'Please Select an Area to Work With:'
pos: 230, 490
size_hint: .15, .05
font_size: 23
Button:
text: "A"
pos: 230, 100
size_hint: .4,.1
font_size: 23
on_press: root.manager.current = 'settings'
Button:
text: "B"
pos: 230, 210
size_hint: .4,.1
font_size: 23
on_press: root.manager.current = 'settings'
Button:
text: "C"
pos: 230, 320
size_hint: .4,.1
font_size: 23
on_press: root.manager.current = 'settings'
Button:
text: "D"
pos: 230, 420
size_hint: .4,.1
font_size: 23
on_press: root.manager.current = 'settings'
<SettingsScreen>:
GridLayout:
Label:
text: 'Room 1'
pos: 6, 460
size_hint: .15, .05
font_size: 23
Label:
text: 'Room 2'
pos: 6, 420
size_hint: .15, .05
font_size: 23
Label:
text: 'Room 3'
pos: 6, 380
size_hint: .15, .05
font_size: 23
Label:
text: 'Room 4'
pos: 6, 340
size_hint: .15, .05
font_size: 23
Label:
text: 'Room 5'
pos: 6, 300
size_hint: .15, .05
font_size: 23
Label:
text: 'Room 6'
pos: 6, 260
size_hint: .15, .05
font_size: 23
TextInput:
text1: "0"
multiline: False
pos: 200,420
font_size: 23
on_text: viewer.text = self.text1
size_hint: .001, .001
TextInput:
text2: "0"
multiline: False
pos: 200, 420
font_size: 23
on_text: viewer.text = self.text2
size_hint: .001, .001
TextInput:
text3: "0"
multiline: False
pos: 200,380
font_size: 23
on_text: viewer.text = self.text3
size_hint: .001, .001
TextInput:
text4: "0"
multiline: False
pos: 200,340
font_size: 23
on_text: viewer.text = self.text4
size_hint: .001, .001
TextInput:
text5: "0"
multiline: False
pos: 200,300
font_size: 23
on_text: viewer.text = self.text5
size_hint: .001, .001
TextInput:
text6: "0"
multiline: False
pos: 200,240
font_size: 23
on_text: viewer.text = self.text6
size_hint: .001, .001
""")
# Declare both screen
class MenuScreen(Screen):
pass
class SettingsScreen(Screen):
pass
# Create the screen manager
sm = ScreenManager()
sm.add_widget(MenuScreen(name='menu'))
sm.add_widget(SettingsScreen(name='settings'))
class TestApp(App):
def build(self):
return sm
if __name__ == '__main__':
TestApp().run()
我打算让每个按钮的第二页都具有唯一性，但是希望获得任何帮助.
Im planning to have the second page unique for each button pressed, but want Any help would be appreciated.
推荐答案
我希望我能理解您的问题.您正在要求执行此操作的方法.一个简单的答案是，您拥有整个Python来执行所需的所有操作. Kivy是一个提供许多组件来设计GUI的库.它还为您提供了一种由Builder.load_string()解析的语言.这是一个或多或少都在寻找的示例.它在第一个屏幕上有点像计算器.第二个屏幕为空，您可以使用底部的按钮在它们之间移动.
I hope I got to understand your question. You are asking for methods to do this. The plain answer is that you have the whole Python to do all the operations you want. Kivy is a library that provides a lot of components to design GUI. It also provides you with a language that is parsed by the Builder.load_string(). Here is an example that might be more or less what you are looking for. It is sort of a calculator on the first screen. The second screen is empty and you can move between them with the bottom buttons.
第一个屏幕上的计算器具有两个InputTexts和两个按钮(Sum和Product).求和按钮直接在奇异果语言上实现了求和.产品按钮在根(Calc的一个实例)中调用一个方法.该方法本身并不存在.我在kivy部分下面的python代码中创建了代码.对于我所说的代码，有一些注释.
The calculator on the first screen has two InputTexts and two buttons (Sum and Product). The Sum Button has the implementation of a sum directly on the kivy language. The Product Button calls a method in the root (an instance of Calc). The method doesn't exist by itself. I created in the python code below the kivy section. There is some comments on the code for what I am saying.
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout
Builder.load_string("""
<Calc>:
# This are attributes of the class Calc now
a: _a
b: _b
result: _result
AnchorLayout:
anchor_x: 'center'
anchor_y: 'top'
ScreenManager:
size_hint: 1, .9
id: _screen_manager
Screen:
name: 'screen1'
GridLayout:
cols:1
TextInput:
id: _a
text: '3'
TextInput:
id: _b
text: '5'
Label:
id: _result
Button:
text: 'sum'
# You can do the opertion directly
on_press: _result.text = str(int(_a.text) + int(_b.text))
Button:
text: 'product'
# Or you can call a method from the root class (instance of calc)
on_press: root.product(*args)
Screen:
name: 'screen2'
Label:
text: 'The second screen'
AnchorLayout:
anchor_x: 'center'
anchor_y: 'bottom'
BoxLayout:
orientation: 'horizontal'
size_hint: 1, .1
Button:
text: 'Go to Screen 1'
on_press: _screen_manager.current = 'screen1'
Button:
text: 'Go to Screen 2'
on_press: _screen_manager.current = 'screen2'""")
class Calc(FloatLayout):
# define the multiplication of a function
def product(self, instance):
# self.result, self.a and self.b where defined explicitely in the kv
self.result.text = str(int(self.a.text) * int(self.b.text))
class TestApp(App):
def build(self):
return Calc()
if __name__ == '__main__':
TestApp().run()
这篇关于Kivy输入值，用于简单计算的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
