flet_animations/bouncing_ball_loading.py at main · plugeit/flet_animations · GitHub

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import flet as ft
import time

def main(page: ft.Page):
    global dic;
    dic={};
    page.bgcolor="black";
    page.vertical_alignment=ft.MainAxisAlignment.CENTER;
    page.horizontal_alignment=ft.MainAxisAlignment.CENTER;
    global def_;
    def_=0;
    def animate(init, i):
        dic[f"container{i}"].alignment=ft.alignment.Alignment(0,init);
    def animate_squeeze(i):
        pass;
    def change():
        while(True):
            global def_;
            if(def_==0):
                init=1;
                while(True):
                    init-=0.1;
                    animate(init,0);
                    animate(init,1);
                    animate(init,2);
                    page.update();
                    if(init<=-0.9):
                        break;
                def_=1;
            else:
                init=-1;
                while(True):
                    init+=0.1;
                    animate(init,0);
                    animate(init,1);
                    animate(init,2);
                    page.update();
                    if(init>=0.9):
                        animate_squeeze(0);
                        animate_squeeze(1);
                        animate_squeeze(2);
                        break;
                def_=0;
            time.sleep(0.5);
    dic['container0']=ft.Container(animate=ft.animation.Animation(300, "easeInOut"),height=140, width=30, bgcolor="black", alignment=ft.alignment.Alignment(0,1));
    ball=ft.Container(height=25,width=25, bgcolor="white", border_radius=40);
    dic['container1']=ft.Container(animate=ft.animation.Animation(500, "easeInOut"),height=140, width=30, bgcolor="black", alignment=ft.alignment.Alignment(0,1));
    ball1=ft.Container(height=25,width=25, bgcolor="white", border_radius=40);
    dic['container2']=ft.Container(animate=ft.animation.Animation(700, "easeInOut"),height=140, width=30, bgcolor="black", alignment=ft.alignment.Alignment(0,1));
    ball2=ft.Container(height=25,width=25, bgcolor="white", border_radius=40);
    dic['container0'].content=ball;
    dic['container1'].content=ball1;
    dic['container2'].content=ball2;
    text_=ft.Text(
            "Loading...",
            size=35,
            color=ft.colors.WHITE,
            weight=ft.FontWeight.BOLD,
        );
    page.add(ft.Column(alignment="center",controls=[ft.Row(alignment="center",controls=[dic['container0'], dic['container1'], dic['container2']]), ft.Row(alignment="center",controls=[text_])]));
    change();

ft.app(target=main)