142 lines
4.3 KiB
Python
142 lines
4.3 KiB
Python
import tkinter as tk
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from tkinter import ttk
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import platform
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class RoundedLabel(tk.Label):
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def __init__(self, master=None, text="", bg="white", fg="black",
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corner_radius=10, border_width=0, border_color=None,** kwargs):
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# 初始化父类
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super().__init__(master, text=text, bg=bg, fg=fg, bd=0,
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highlightthickness=0, **kwargs)
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# 圆角相关参数
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self.corner_radius = corner_radius
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self.border_width = border_width
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self.border_color = border_color if border_color else fg
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# 绑定事件以触发重绘
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self.bind("<Configure>", self._on_configure)
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# 初始绘制
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self._draw_rounded_bg()
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def _on_configure(self, event=None):
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# 当控件大小改变时重绘
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self._draw_rounded_bg()
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def _draw_rounded_bg(self):
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# 获取控件大小
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width = self.winfo_width()
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height = self.winfo_height()
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# 确保控件已渲染
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if width <= 1 or height <= 1:
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self.after(10, self._draw_rounded_bg)
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return
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# 创建用于绘制的图像
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self._image = tk.PhotoImage(width=width, height=height)
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self.configure(image=self._image)
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# 获取绘制上下文
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draw = self._image.tk.call(self._image, "cget", "-draw")
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# 绘制圆角背景
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bg = self["bg"]
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radius = self.corner_radius
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# 确保圆角半径不会超过控件尺寸的一半
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max_radius = min(width, height) // 2
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radius = min(radius, max_radius)
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# 绘制背景圆角矩形
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self._image.tk.call(
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"image", "draw", self._image,
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"-fill", bg,
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"-roundedrect", 0, 0, width-1, height-1, radius
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)
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# 绘制边框（如果需要）
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if self.border_width > 0:
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self._image.tk.call(
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"image", "draw", self._image,
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"-stroke", self.border_color,
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"-width", self.border_width,
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"-roundedrect",
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self.border_width//2,
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self.border_width//2,
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width-1 - self.border_width//2,
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height-1 - self.border_width//2,
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radius - self.border_width//2
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)
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def configure(self, cnf=None,** kwargs):
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# 重写配置方法以更新外观
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update = False
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if "bg" in kwargs or "background" in kwargs:
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update = True
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if "corner_radius" in kwargs:
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self.corner_radius = kwargs.pop("corner_radius")
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update = True
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if "border_width" in kwargs:
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self.border_width = kwargs.pop("border_width")
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update = True
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if "border_color" in kwargs:
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self.border_color = kwargs.pop("border_color")
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update = True
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# 调用父类配置方法
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super().configure(cnf, **kwargs)
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# 如果有外观相关参数变更，重绘
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if update:
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self._draw_rounded_bg()
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# 测试代码
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if __name__ == "__main__":
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root = tk.Tk()
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root.title("真正的圆角 Label 示例")
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root.geometry("500x400")
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root.configure(bg="#f0f0f0")
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# 创建普通 Label 作为对比
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tk.Label(root, text="普通 Label", bg="white", padx=10, pady=5).pack(pady=10)
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# 创建不同样式的圆角 Label
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RoundedLabel(
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root,
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text="基础圆角 Label",
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bg="#4a90e2",
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fg="white",
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corner_radius=15,
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padx=20,
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pady=10,
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font=("微软雅黑", 12)
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).pack(pady=10)
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RoundedLabel(
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root,
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text="带边框的圆角 Label",
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bg="#ffffff",
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fg="#333333",
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corner_radius=10,
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border_width=2,
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border_color="#5cb85c",
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padx=20,
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pady=10,
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font=("宋体", 10)
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).pack(pady=10)
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RoundedLabel(
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root,
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text="大圆角样式",
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bg="#f0ad4e",
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fg="white",
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corner_radius=25,
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padx=30,
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pady=15,
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font=("黑体", 14, "bold")
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).pack(pady=10)
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root.mainloop()
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