使用Python实现图片转ICO格式

import sys
import os
from PyQt5.QtWidgets import (
    QApplication, QMainWindow, QLabel, QLineEdit, QPushButton, QFileDialog,
    QVBoxLayout, QHBoxLayout, QWidget, QMessageBox, QComboBox
)
from PyQt5.QtGui import QPixmap, QIcon
from PyQt5.QtCore import Qt
from PyQt5.QtCore import QMimeData
from PyQt5.QtGui import QDragEnterEvent, QDropEvent
from PIL import Image

# 日志文件
LOG_FILE = "conversion_history.log"

class ImageToICOConverter(QMainWindow):
    def __init__(self):
        super().__init__()

        self.setWindowTitle("图片转ICO工具")
        self.setGeometry(100, 100, 355, 360)
        self.setAcceptDrops(True)  # 启用拖拽功能
        self.initUI()

    def initUI(self):
        # 主布局
        main_layout = QVBoxLayout()

        # 图片选择
        file_layout = QHBoxLayout()
        self.image_path_input = QLineEdit(self)
        browse_button = QPushButton("浏览", self)
        browse_button.clicked.connect(self.choose_image_file)
        file_layout.addWidget(QLabel("选择图片文件:"))
        file_layout.addWidget(self.image_path_input)
        file_layout.addWidget(browse_button)
        main_layout.addLayout(file_layout)

        # 输出路径选择
        output_layout = QHBoxLayout()
        self.output_path_input = QLineEdit(self)
        save_button = QPushButton("保存", self)
        save_button.clicked.connect(self.choose_output_path)
        output_layout.addWidget(QLabel("选择输出路径:"))
        output_layout.addWidget(self.output_path_input)
        output_layout.addWidget(save_button)
        main_layout.addLayout(output_layout)

        # 图标尺寸选择（单选）
        size_layout = QHBoxLayout()
        self.size_combo = QComboBox(self)
        self.size_combo.addItems(["16", "32", "48", "64", "128", "256"])
        size_layout.addWidget(QLabel("选择图标尺寸:"))
        size_layout.addWidget(self.size_combo)
        main_layout.addLayout(size_layout)

        # 图片预览
        self.preview_label = QLabel("图片预览", self)
        self.preview_label.setAlignment(Qt.AlignCenter)
        self.preview_label.setStyleSheet("background-color: lightgray; border: 1px solid black;")
        self.preview_label.setFixedSize(200, 200)
        preview_layout = QVBoxLayout()
        preview_layout.addWidget(self.preview_label, alignment=Qt.AlignCenter)
        main_layout.addLayout(preview_layout)

        # 转换按钮
        convert_button = QPushButton("转换为ICO", self)
        convert_button.clicked.connect(self.convert_to_ico)
        main_layout.addWidget(convert_button, alignment=Qt.AlignCenter)

        # 设置中央窗口
        central_widget = QWidget()
        central_widget.setLayout(main_layout)
        self.setCentralWidget(central_widget)

    def choose_image_file(self):
        file_path, _ = QFileDialog.getOpenFileName(self, "选择图片文件", "", "图片文件 (*.png *.jpg *.jpeg *.bmp *.gif)")
        if file_path:
            self.image_path_input.setText(file_path)
            self.show_preview(file_path)

    def choose_output_path(self):
        output_path, _ = QFileDialog.getSaveFileName(self, "选择输出路径", "", "ICO文件 (*.ico)")
        if output_path:
            self.output_path_input.setText(output_path)

    def show_preview(self, image_path):
        try:
            pixmap = QPixmap(image_path)
            pixmap = pixmap.scaled(200, 200, Qt.KeepAspectRatio, Qt.SmoothTransformation)
            self.preview_label.setPixmap(pixmap)
        except Exception as e:
            QMessageBox.critical(self, "预览错误", f"无法加载图片预览: {str(e)}")

    def convert_to_ico(self):
        image_path = self.image_path_input.text()
        output_path = self.output_path_input.text()

        if not image_path:
            QMessageBox.critical(self, "错误", "请选择源图片文件")
            return

        if not output_path:
            output_path = os.path.splitext(image_path)[0] + ".ico"
            self.output_path_input.setText(output_path)

        try:
            img = Image.open(image_path)

            # 获取用户选择的图标尺寸
            size = int(self.size_combo.currentText())
            sizes = [(size, size)]

            img = img.convert("RGBA")
            img.save(output_path, format="ICO", sizes=sizes)

            with open(LOG_FILE, "a") as log_file:
                log_file.write(f"Converted: {image_path} -> {output_path}\n")

            QMessageBox.information(self, "成功", f"图片已成功转换并保存为 {output_path}")
        except Exception as e:
            QMessageBox.critical(self, "转换错误", f"转换过程中发生错误: {str(e)}")

    def dragEnterEvent(self, event: QDragEnterEvent):
        if event.mimeData().hasUrls():
            event.accept()
        else:
            event.ignore()

    def dropEvent(self, event: QDropEvent):
        mime_data: QMimeData = event.mimeData()
        if mime_data.hasUrls():
            file_path = mime_data.urls()[0].toLocalFile()
            self.image_path_input.setText(file_path)
            self.show_preview(file_path)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    window = ImageToICOConverter()
    window.show()
    sys.exit(app.exec_())