from manim import *
import pygments  # 确保已安装pygments


class CodeDemo(Scene):
    def construct(self):
        # 使用Text显示代码（兼容性最佳方案）
        code_content = '''from manim import *

class FadeInSquare(Scene):
    def construct(self):
        s = Square()
        self.play(FadeIn(s))
        self.play(s.animate.scale(2))
        self.wait()
'''
        # 创建代码文本对象
        code_text = Text(
            code_content,
            font="Monospace",
            line_spacing=0.6,
            font_size=20,
            color=WHITE
        ).scale(0.7)

        # 添加背景框
        frame = SurroundingRectangle(code_text, color=BLUE, buff=0.5)

        # 动画序列
        self.play(Create(frame), run_time=1)
        self.play(Write(code_text), run_time=3)
        self.wait(2)
        self.play(FadeOut(code_text), FadeOut(frame))