84 lines
3.1 KiB
Python
84 lines
3.1 KiB
Python
import tkinter as tk
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from tkinter import filedialog, messagebox
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from PIL import Image, ImageTk, ImageGrab
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class ImageCropApp:
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def __init__(self, root):
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self.root = root
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self.root.title("Image Crop Tool")
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# 选择图片按钮
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self.select_button = tk.Button(root, text="选择图片", command=self.select_image)
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self.select_button.pack(pady=10)
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# 画布，用于显示图片
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self.canvas = tk.Canvas(root, cursor="cross")
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self.canvas.pack(fill=tk.BOTH, expand=True)
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self.image = None # 用于保存选择的图片
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self.rect_start_x = 0
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self.rect_start_y = 0
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self.rect_end_x = 0
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self.rect_end_y = 0
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self.rect = None
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self.tk_image = None
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# 鼠标事件
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self.canvas.bind("<Button-1>", self.start_selection)
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self.canvas.bind("<B1-Motion>", self.update_selection)
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self.canvas.bind("<ButtonRelease-1>", self.finish_selection)
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def select_image(self):
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image_path = filedialog.askopenfilename(title="选择图片", filetypes=[("Image files", "*.jpg;*.png;*.jpeg;*.bmp"), ("All files", "*.*")])
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if image_path:
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self.image = Image.open(image_path)
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self.display_image()
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def display_image(self):
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# 调整图片大小适应窗口
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self.image.thumbnail((self.root.winfo_width(), self.root.winfo_height()))
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self.tk_image = ImageTk.PhotoImage(self.image)
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self.canvas.create_image(0, 0, anchor="nw", image=self.tk_image)
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def start_selection(self, event):
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# 记录起始点
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self.rect_start_x = event.x
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self.rect_start_y = event.y
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# 创建一个选择框
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self.rect = self.canvas.create_rectangle(self.rect_start_x, self.rect_start_y, self.rect_start_x, self.rect_start_y, outline="red", width=2)
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def update_selection(self, event):
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# 更新选择框大小
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self.rect_end_x = event.x
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self.rect_end_y = event.y
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self.canvas.coords(self.rect, self.rect_start_x, self.rect_start_y, self.rect_end_x, self.rect_end_y)
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def finish_selection(self, event):
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self.rect_end_x = event.x
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self.rect_end_y = event.y
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self.crop_image()
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def crop_image(self):
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if self.image:
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# 获取选择框的坐标
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left = min(self.rect_start_x, self.rect_end_x)
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top = min(self.rect_start_y, self.rect_end_y)
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right = max(self.rect_start_x, self.rect_end_x)
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bottom = max(self.rect_start_y, self.rect_end_y)
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# 根据选择框坐标进行裁剪
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cropped_image = self.image.crop((left, top, right, bottom))
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# 让用户选择保存路径
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save_path = filedialog.asksaveasfilename(defaultextension=".png", filetypes=[("PNG files", "*.png"), ("All files", "*.*")])
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if save_path:
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cropped_image.save(save_path)
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messagebox.showinfo("成功", f"图片已保存到: {save_path}")
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# 启动 GUI 应用
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if __name__ == "__main__":
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root = tk.Tk()
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app = ImageCropApp(root)
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root.geometry("800x600") # 设置初始窗口大小
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root.mainloop()
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