kivy 9 center element

#tutorial.kv

#:import random random

<ScatterTextWidget>:

    orientation: 'vertical'

    TextInput:

        id: textinput_id

        font_size: 150

        size_hint_y: None

        height: 200

        text: 'default'

        on_text: root.change_label_colour()

        #on_text: label_id.color = [random.random() for i in [0,1,2]] + [1]

    FloatLayout:

        Scatter:

            center: self.parent.center

            size_hint: None, None

            size: label_id.size

            canvas.after:

                Color:

                    rgba: 1, 0, 0, 0.5

                Rectangle:

                    size: self.size

                    pos: self.pos

            Label:

                id: label_id

                text: textinput_id.text

                font_size: 150

                color: root.text_colour

                size: self.texture_size

                canvas:

                    Color:

                        rgba: 0, 1, 0, 0.5

                    Rectangle:

                        pos: self.pos

                        size: self.size

    BoxLayout:

        orientation: 'horizontal'

        size_hint_y: None

        height: 150

        Label:

            id: label1

            text: textinput_id.text[:3]

            font_size: 100

            color: root.text_colour

        Label:

            id: label2

            text: textinput_id.text[-3:]

            font_size: 100

            color: root.text_colour

-----------------------

#main.py

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

import random

from kivy.graphics.vertex_instructions import (Rectangle, Ellipse, Line)

from kivy.graphics.context_instructions import Color

from kivy.properties import ListProperty, ObjectProperty

class ScatterTextWidget(BoxLayout):

    text_colour = ListProperty([1, 0, 0, 1])

    def change_label_colour(self, *args):

        colour = [random.random() for i in [0,1,2]] + [1]

        print(colour)

        self.text_colour = colour

class TutorialApp(App):

    def build(self):

        return ScatterTextWidget()

TutorialApp().run()

reference:

https://www.youtube.com/watch?v=2Gc8iYJQ_qk&list=PLdNh1e1kmiPP4YApJm8ENK2yMlwF1_edq&index=8

美国魔幻房价

解放JH6+

kivy 8 draw with kivy

#tutorial.kv

#:import random random

<ScatterTextWidget>:

    orientation: 'vertical'

    canvas.before:

        Color:

            rgba: 0, 0, 1, 1

        Rectangle:

            pos: 0, 100

            size: 300, 100

        Ellipse:

            pos: 0, 400

            size: 300, 100

        Line:

            points: 0, 0, 500, 600, 400,  300

            close: True

            width: 3

    TextInput:

        id: textinput_id

        font_size: 150

        size_hint_y: None

        height: 200

        text: 'default'

        on_text: root.change_label_colour()

        #on_text: label_id.color = [random.random() for i in [0,1,2]] + [1]

    FloatLayout:

        Scatter:

            Label:

                id: label_id

                text: textinput_id.text

                font_size: 150

                color: root.text_colour

    BoxLayout:

        orientation: 'horizontal'

        size_hint_y: None

        height: 150

        Label:

            id: label1

            text: textinput_id.text[:3]

            font_size: 100

            color: root.text_colour

        Label:

            id: label2

            text: textinput_id.text[-3:]

            font_size: 100

            color: root.text_colour

reference:

https://www.youtube.com/watch?v=1d709erhpdQ&list=PLdNh1e1kmiPP4YApJm8ENK2yMlwF1_edq&index=7

kivy 7 draw with python

#main.py

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

import random

from kivy.graphics.vertex_instructions import (Rectangle, Ellipse, Line)

from kivy.graphics.context_instructions import Color

from kivy.properties import ListProperty, ObjectProperty

class ScatterTextWidget(BoxLayout):

    text_colour = ListProperty([1, 0, 0, 1])

    def __init__(self, **kwargs):

        super(ScatterTextWidget, self).__init__(**kwargs)

        with self.canvas.after:

            Color(0, 1, 0, 1)

            Rectangle(pos=(0, 100), size=(300, 100))

            Ellipse(pos=(0, 400), size=(300, 100))

            Line(points=[0, 0, 500, 600, 400, 300], close=True, width=3)

    def change_label_colour(self, *args):

        colour = [random.random() for i in [0,1,2]] + [1]

        print(colour)

        self.text_colour = colour

class TutorialApp(App):

    def build(self):

        return ScatterTextWidget()

TutorialApp().run()

reference:

https://www.youtube.com/watch?v=1d709erhpdQ&list=PLdNh1e1kmiPP4YApJm8ENK2yMlwF1_edq&index=7

kivy 6 property

#main.py

from kivy.app import App

from kivy.uix.boxlayout import BoxLayout

import random

from kivy.properties import ListProperty

class ScatterTextWidget(BoxLayout):

    text_colour = ListProperty([1, 0, 0, 1])

    def change_label_colour(self, *args):

        colour = [random.random() for i in [0,1,2]] + [1]

        print(colour)

        self.text_colour = colour

class TutorialApp(App):

    def build(self):

        return ScatterTextWidget()

TutorialApp().run()

-----------------------

#tutorial.kv

#:import random random

<ScatterTextWidget>:

    orientation: 'vertical'

    TextInput:

        id: textinput_id

        font_size: 150

        size_hint_y: None

        height: 200

        text: 'default'

        on_text: root.change_label_colour()

        #on_text: label_id.color = [random.random() for i in [0,1,2]] + [1]

    FloatLayout:

        Scatter:

            Label:

                id: label_id

                text: textinput_id.text

                font_size: 150

                color: root.text_colour

    BoxLayout:

        orientation: 'horizontal'

        size_hint_y: None

        height: 150

        Label:

            id: label1

            text: textinput_id.text[:3]

            font_size: 100

            color: root.text_colour

        Label:

            id: label2

            text: textinput_id.text[-3:]

            font_size: 100

            color: root.text_colour

reference:

https://www.youtube.com/watch?v=OkW-1uzP5Og&list=PLdNh1e1kmiPP4YApJm8ENK2yMlwF1_edq&index=7

kivy 5 kivy language with python function

#project structure

main.py

tutorial.kv

#main.py

from kivy.uix.boxlayout import BoxLayout

import random

class ScatterTextWidget(BoxLayout):

    def change_label_colour(self, *args):

        colour = [random.random() for i in [0,1,2]] + [1]

        print(colour)

        label = self.ids['label_id']

        label.color = colour

class TutorialApp(App):

    def build(self):

        return ScatterTextWidget()

TutorialApp().run()

---------------------------

tutorial.kv

#:import random random

<ScatterTextWidget>:

    orientation: 'vertical'

    TextInput:

        id: textinput_id

        font_size: 150

        size_hint_y: None

        height: 200

        text: 'default'

        on_text: root.change_label_colour()

        #on_text: label_id.color = [random.random() for i in [0,1,2]] + [1]

    FloatLayout:

        Scatter:

            Label:

                id: label_id

                text: textinput_id.text

                font_size: 150

-----------------

#logs

[0.1348179395731689, 0.24583291893163917, 0.9907235899551307, 1]

[0.2874682150281308, 0.9696246742617654, 0.550108717419674, 1]

reference:

https://www.youtube.com/watch?v=ZmteLworB4E&list=PLdNh1e1kmiPP4YApJm8ENK2yMlwF1_edq&index=5