PictureEdit/export_dialog.py

"""导出设置对话框"""
import tkinter as tk
from tkinter import ttk, filedialog, messagebox
from pathlib import Path
from exporter import Exporter


class ExportDialog(tk.Toplevel):
    def __init__(self, parent, count):
        super().__init__(parent)
        self.title("导出设置")
        self.parent = parent
        self.count = count
        self.result = None

        # 确保对话框模态
        self.transient(parent)
        self.grab_set()

        # 设置默认导出路径为第一个图片所在目录下的output文件夹
        default_output_dir = str(Path.home())
        if parent.project.foregrounds:
            first_image_dir = Path(parent.project.foregrounds[0].file_path).parent
            default_output_dir = first_image_dir / "output"

        # 设置布局
        frame = ttk.Frame(self, padding=10)
        frame.pack(fill=tk.BOTH, expand=True)

        # 输出目录
        ttk.Label(frame, text="输出目录:").grid(row=0, column=0, sticky=tk.W, pady=5)
        self.output_dir_var = tk.StringVar(value=str(default_output_dir))
        ttk.Entry(frame, textvariable=self.output_dir_var, width=50).grid(row=0, column=1, pady=5)
        ttk.Button(frame, text="浏览", command=self.choose_output_dir).grid(row=0, column=2, padx=5, pady=5)

        # 文件名模板
        ttk.Label(frame, text="文件名模板:").grid(row=1, column=0, sticky=tk.W, pady=5)
        self.filename_var = tk.StringVar(value="{name}_{idx}")
        ttk.Entry(frame, textvariable=self.filename_var, width=50).grid(row=1, column=1, pady=5)
        ttk.Label(frame, text="可用变量: {name}, {idx}, {total}, {date}").grid(row=1, column=2, pady=5)

        # 输出格式
        ttk.Label(frame, text="输出格式:").grid(row=2, column=0, sticky=tk.W, pady=5)
        self.format_var = tk.StringVar(value="png")
        format_frame = ttk.Frame(frame)
        ttk.Radiobutton(format_frame, text="PNG", variable=self.format_var, value="png").pack(side=tk.LEFT, padx=5)

        ttk.Radiobutton(format_frame, text="JPEG", variable=self.format_var, value="jpeg").pack(side=tk.LEFT, padx=5)
        format_frame.grid(row=2, column=1, sticky=tk.W, pady=5)

        # 质量设置（仅JPEG）
        self.quality_frame = ttk.Frame(frame)
        ttk.Label(self.quality_frame, text="质量:").pack(side=tk.LEFT, padx=5)
        self.quality_var = tk.IntVar(value=95)
        ttk.Scale(
            self.quality_frame,
            from_=1,
            to=100,
            variable=self.quality_var,
            orient=tk.HORIZONTAL,
            length=200,
            command=lambda v: self.quality_label.config(text=f"{int(float(v))}%")
        ).pack(side=tk.LEFT, padx=5)
        self.quality_label = ttk.Label(self.quality_frame, text="95%")
        self.quality_label.pack(side=tk.LEFT, padx=5)

        # 进度条
        self.progress_var = tk.DoubleVar(value=0)
        self.progress_bar = ttk.Progressbar(frame, variable=self.progress_var, maximum=100)

        # 按钮
        btn_frame = ttk.Frame(frame)
        self.export_btn = ttk.Button(btn_frame, text="导出", command=self.on_export)
        self.export_btn.pack(side=tk.LEFT, padx=5)
        ttk.Button(btn_frame, text="取消", command=self.on_cancel).pack(side=tk.LEFT, padx=5)

        # 根据格式显示/隐藏质量设置
        self.update_quality_visibility()
        self.format_var.trace_add("write", lambda *args: self.update_quality_visibility())

        # 布局管理
        self.quality_frame.grid(row=3, column=0, columnspan=3, sticky=tk.W, pady=5)
        self.progress_bar.grid(row=4, column=0, columnspan=2, sticky=tk.EW, pady=5)
        btn_frame.grid(row=5, column=0, columnspan=3, pady=10)

        # 调整大小
        self.geometry("700x300")
        self.wait_window(self)

    def choose_output_dir(self):
        """选择输出目录"""
        dir_path = filedialog.askdirectory()
        if dir_path:
            self.output_dir_var.set(dir_path)

    def update_quality_visibility(self):
        """根据输出格式显示或隐藏质量设置"""
        if self.format_var.get().lower() == "jpeg":
            self.quality_frame.grid()
        else:
            self.quality_frame.grid_forget()

    def update_progress(self, current, total):
        """更新进度条"""
        progress = (current / total) * 100
        self.progress_var.set(progress)
        self.update_idletasks()

    def on_export(self):
        """执行导出"""
        # 禁用导出按钮防止重复点击
        self.export_btn.config(state=tk.DISABLED)
        
        # 在新线程中执行导出，避免阻塞UI
        import threading
        export_thread = threading.Thread(target=self._perform_export)
        export_thread.daemon = True
        export_thread.start()

    def _perform_export(self):
        """在后台线程中执行导出"""
        output_dir = self.output_dir_var.get()
        filename_template = self.filename_var.get()
        format = self.format_var.get()
        quality = self.quality_var.get()

        # 执行导出
        success = Exporter.export_batch(
            self.parent.project,
            output_dir,
            filename_template,
            format,
            quality,
            progress_callback=self.update_progress
        )

        # 在主线程中更新UI
        self.after(0, self._on_export_complete, success)

    def _on_export_complete(self, success):
        """导出完成后的回调"""
        if success:
            messagebox.showinfo("成功", f"已成功导出 {self.count} 张图片")
            self.result = True
            self.destroy()
        else:
            messagebox.showerror("错误", "导出过程中发生错误")
            self.export_btn.config(state=tk.NORMAL)

    def on_cancel(self):
        """取消导出"""
        self.result = None
        self.destroy()