kivy中kv语言的变态用法

这是变态的特点

lines="""
GridLayout:
    name:"{}"
    rows:1
    canvas:
        Color:
            rgba:{}
        Line:
            points:{}
            width:5
               """



line3 = Builder.load_string(lines.format("line3","0.5,0.5,0.3, 1","self.pos[0]-self.size[0],self.pos[1]+30,self.pos[0]+self.size[0],self.pos[1]+300"))

这是完整代码

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.label import Label
Builder.load_string('''
<CameraClick>:
    orientation: 'vertical'
    RelativeLayout:
        name:"index_layout"
        canvas:
            Color:
                rgba: 1,1,1, 1
            Rectangle:
                pos:self.pos
                size: self.size
        GridLayout:
            name:"parent_layout"
            rows:1
            GridLayout:
                name:"left"
                cols:1
                GridLayout:
                    name:"left_1"
                    cols:1
                    canvas:
                        Color:
                            rgba: 0.5, 1, 1, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size
                GridLayout:
                    name:"left_2"
                    cols:1
                    size_hint_y:5
                    canvas:
                        Color:
                            rgba: 1, 0, 1, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size
                GridLayout:
                    name:"left_3"
                    cols:1
                    canvas:
                        Color:
                            rgba: 1, 1, 0.6, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size
                GridLayout:
                    name:"left_4"
                    cols:1
                    canvas:
                        Color:
                            rgba: 1, 0.9, 1, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size
               
            GridLayout:
                name:"center"
                cols:1
                size_hint_x:6
                GridLayout:
                    name:"center_1"
                    rows:1
                    canvas:
                        Color:
                            rgba: 1, 0, 1, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size
                GridLayout:
                    name:"center_2"
                    rows:1
                    size_hint_y:5
                    
                GridLayout:
                    name:"center_3"
                    rows:1
                    canvas:
                        Color:
                            rgba: 1, 0.5, 0.2, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size
                GridLayout:
                    name:"center_4"
                    rows:1
                    canvas:
                        Color:
                            rgba: 1, 0.3, 0.2, 1
                        Rectangle:
                            pos:self.pos
                            size: self.size 
            GridLayout:
                name:"right"
                rows:1
                

        
''')

line1=Builder.load_string("""
GridLayout:
    name:"line1"
    rows:1
    canvas:
        Color:
            rgba: 0.5,0.5,0.3, 1
        Line:
            points:self.pos[0],self.pos[1]+30,self.pos[0],self.pos[1]+self.size[1]-30
            width:5
               """)
line2 = Builder.load_string("""
GridLayout:
    name:"line2"
    rows:1
    canvas:
        Color:
            rgba: 0.5,0.5,0.3, 1
        Line:
            points:self.pos[0]-self.size[0],self.pos[1]+30,self.pos[0]+self.size[0],self.pos[1]+30
            width:5
               """)

lines="""
GridLayout:
    name:"{}"
    rows:1
    canvas:
        Color:
            rgba:{}
        Line:
            points:{}
            width:5
               """



line3 = Builder.load_string(lines.format("line3","0.5,0.5,0.3, 1","self.pos[0]-self.size[0],self.pos[1]+30,self.pos[0]+self.size[0],self.pos[1]+300"))





class CameraClick(BoxLayout):
    pass

class TestCamera(App):
    def build(self):
        y_labels= ("100", "80","60" , "40", "20","0")
        x_labels= ("Sur","Fea","Dis","Hap","Sad","Ang","Nat","x","y","z")
        printer=CameraClick()
        # 绘制纵坐标
        for text in  y_labels:
            printer.children[0].children[0].children[2].children[2].add_widget(Label(text=text))
        # 标题
        printer.children[0].children[0].children[1].children[3].add_widget(Label(text="title"))
        # 设置横纵坐标轴刻度
        # line1
        # 绘制坐标轴
        printer.children[0].children[0].children[1].children[2].add_widget(line1)
        printer.children[0].children[0].children[1].children[2].add_widget(line2)
        #

        printer.children[0].children[0].children[1].children[2].add_widget(line3)








        # 绘制很坐标
        for text in x_labels:
            printer.children[0].children[0].children[1].children[1].add_widget(Label(text=text))



        printer.children[0].children[0].children[1].children[0].add_widget(Label(text="title"))


        return printer

if __name__ == '__main__':

    TestCamera().run()