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1681
markdown-editor-pro.py
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1681
markdown-editor-pro.py
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398
markdown-editor.py
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398
markdown-editor.py
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import sys
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import os
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import markdown
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from PyQt5.QtWidgets import (QApplication, QMainWindow, QVBoxLayout, QHBoxLayout,
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QTextEdit, QSplitter, QAction, QFileDialog, QMessageBox,
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QToolBar, QStatusBar, QWidget)
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from PyQt5.QtCore import Qt, QSettings
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from PyQt5.QtGui import QFont, QKeySequence, QTextCursor
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from PyQt5.QtWebEngineWidgets import QWebEngineView
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class MarkdownEditor(QMainWindow):
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def __init__(self):
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super().__init__()
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self.current_file = None
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self.settings = QSettings("SunsetMD", "SunsetMD")
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self.initUI()
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self.load_settings()
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def initUI(self):
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self.setWindowTitle("SunsetMD - Markdown编辑器")
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self.setGeometry(100, 100, 1200, 800)
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# 创建中央部件
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central_widget = QWidget()
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self.setCentralWidget(central_widget)
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layout = QHBoxLayout(central_widget)
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# 创建分割器（左右布局）
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self.splitter = QSplitter(Qt.Horizontal)
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layout.addWidget(self.splitter)
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# 左侧编辑器
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self.editor = QTextEdit()
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self.editor.setFont(QFont("Arial", 12))
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self.editor.textChanged.connect(self.update_preview)
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self.splitter.addWidget(self.editor)
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# 右侧预览
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self.preview = QWebEngineView()
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self.preview.setHtml(self.get_preview_html(""))
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self.splitter.addWidget(self.preview)
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# 设置分割比例
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self.splitter.setSizes([600, 600])
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# 创建菜单
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self.create_menus()
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# 创建工具栏
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self.create_toolbar()
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# 状态栏
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self.status_bar = QStatusBar()
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self.setStatusBar(self.status_bar)
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self.status_bar.showMessage("就绪")
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# 应用样式
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self.setStyleSheet("""
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QMainWindow {
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background-color: #f5f5f5;
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}
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QTextEdit {
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border: none;
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background-color: white;
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font-family: "Arial", sans-serif;
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font-size: 14px;
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padding: 10px;
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}
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QToolBar {
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background-color: #f0f0f0;
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border: none;
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spacing: 3px;
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padding: 5px;
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}
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QToolBar QToolButton {
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background-color: transparent;
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border: 1px solid transparent;
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border-radius: 3px;
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padding: 5px;
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}
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QToolBar QToolButton:hover {
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background-color: #e0e0e0;
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border: 1px solid #c0c0c0;
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}
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""")
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def create_menus(self):
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menubar = self.menuBar()
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# 文件菜单
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file_menu = menubar.addMenu("文件")
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new_action = QAction("新建", self)
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new_action.setShortcut(QKeySequence.New)
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new_action.triggered.connect(self.new_file)
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file_menu.addAction(new_action)
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open_action = QAction("打开", self)
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open_action.setShortcut(QKeySequence.Open)
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open_action.triggered.connect(self.open_file)
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file_menu.addAction(open_action)
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save_action = QAction("保存", self)
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save_action.setShortcut(QKeySequence.Save)
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save_action.triggered.connect(self.save_file)
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file_menu.addAction(save_action)
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save_as_action = QAction("另存为", self)
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save_as_action.setShortcut(QKeySequence.SaveAs)
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save_as_action.triggered.connect(self.save_as_file)
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file_menu.addAction(save_as_action)
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file_menu.addSeparator()
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export_action = QAction("导出HTML", self)
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export_action.triggered.connect(self.export_html)
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file_menu.addAction(export_action)
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file_menu.addSeparator()
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exit_action = QAction("退出", self)
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exit_action.setShortcut(QKeySequence.Quit)
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exit_action.triggered.connect(self.close)
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file_menu.addAction(exit_action)
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# 编辑菜单
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edit_menu = menubar.addMenu("编辑")
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undo_action = QAction("撤销", self)
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undo_action.setShortcut(QKeySequence.Undo)
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undo_action.triggered.connect(self.editor.undo)
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edit_menu.addAction(undo_action)
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redo_action = QAction("重做", self)
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redo_action.setShortcut(QKeySequence.Redo)
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redo_action.triggered.connect(self.editor.redo)
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edit_menu.addAction(redo_action)
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edit_menu.addSeparator()
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cut_action = QAction("剪切", self)
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cut_action.setShortcut(QKeySequence.Cut)
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cut_action.triggered.connect(self.editor.cut)
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edit_menu.addAction(cut_action)
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copy_action = QAction("复制", self)
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copy_action.setShortcut(QKeySequence.Copy)
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copy_action.triggered.connect(self.editor.copy)
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edit_menu.addAction(copy_action)
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paste_action = QAction("粘贴", self)
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paste_action.setShortcut(QKeySequence.Paste)
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paste_action.triggered.connect(self.editor.paste)
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edit_menu.addAction(paste_action)
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# 视图菜单
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view_menu = menubar.addMenu("视图")
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toggle_action = QAction("切换预览", self)
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toggle_action.setShortcut("F9")
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toggle_action.triggered.connect(self.toggle_preview)
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view_menu.addAction(toggle_action)
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# 格式菜单
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format_menu = menubar.addMenu("格式")
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bold_action = QAction("粗体", self)
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bold_action.setShortcut("Ctrl+B")
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bold_action.triggered.connect(self.insert_bold)
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format_menu.addAction(bold_action)
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italic_action = QAction("斜体", self)
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italic_action.setShortcut("Ctrl+I")
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italic_action.triggered.connect(self.insert_italic)
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format_menu.addAction(italic_action)
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heading_action = QAction("标题", self)
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heading_action.setShortcut("Ctrl+H")
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heading_action.triggered.connect(lambda: self.insert_heading(1))
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format_menu.addAction(heading_action)
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def create_toolbar(self):
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toolbar = QToolBar("工具栏")
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self.addToolBar(toolbar)
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new_btn = QAction("新建", self)
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new_btn.triggered.connect(self.new_file)
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toolbar.addAction(new_btn)
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open_btn = QAction("打开", self)
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open_btn.triggered.connect(self.open_file)
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toolbar.addAction(open_btn)
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save_btn = QAction("保存", self)
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save_btn.triggered.connect(self.save_file)
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toolbar.addAction(save_btn)
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toolbar.addSeparator()
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bold_btn = QAction("粗体", self)
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bold_btn.triggered.connect(self.insert_bold)
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toolbar.addAction(bold_btn)
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italic_btn = QAction("斜体", self)
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italic_btn.triggered.connect(self.insert_italic)
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toolbar.addAction(italic_btn)
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def new_file(self):
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if self.check_save():
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self.editor.clear()
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self.current_file = None
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self.setWindowTitle("SunsetMD - 新文档")
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self.status_bar.showMessage("新建文档")
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def open_file(self):
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if self.check_save():
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path, _ = QFileDialog.getOpenFileName(
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self, "打开文件", "", "Markdown文件 (*.md);;所有文件 (*)"
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)
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if path:
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try:
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with open(path, 'r', encoding='utf-8') as f:
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self.editor.setPlainText(f.read())
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self.current_file = path
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self.setWindowTitle(f"SunsetMD - {os.path.basename(path)}")
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self.status_bar.showMessage(f"已打开: {path}")
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except Exception as e:
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QMessageBox.critical(self, "错误", f"打开文件失败: {str(e)}")
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def save_file(self):
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if self.current_file:
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try:
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with open(self.current_file, 'w', encoding='utf-8') as f:
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f.write(self.editor.toPlainText())
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self.status_bar.showMessage(f"已保存: {self.current_file}")
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return True
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except Exception as e:
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QMessageBox.critical(self, "错误", f"保存文件失败: {str(e)}")
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return False
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else:
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return self.save_as_file()
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def save_as_file(self):
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path, _ = QFileDialog.getSaveFileName(
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self, "保存文件", "", "Markdown文件 (*.md);;所有文件 (*)"
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)
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if path:
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try:
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with open(path, 'w', encoding='utf-8') as f:
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f.write(self.editor.toPlainText())
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self.current_file = path
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self.setWindowTitle(f"SunsetMD - {os.path.basename(path)}")
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self.status_bar.showMessage(f"已保存: {path}")
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return True
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except Exception as e:
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QMessageBox.critical(self, "错误", f"保存文件失败: {str(e)}")
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return False
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return False
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def check_save(self):
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if self.editor.document().isModified():
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reply = QMessageBox.question(
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self, "保存文档",
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"文档已修改，是否保存？",
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QMessageBox.Save | QMessageBox.Discard | QMessageBox.Cancel
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)
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if reply == QMessageBox.Save:
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return self.save_file()
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elif reply == QMessageBox.Cancel:
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return False
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return True
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def update_preview(self):
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text = self.editor.toPlainText()
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html = markdown.markdown(text)
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self.preview.setHtml(self.get_preview_html(html))
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def get_preview_html(self, content):
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return f"""
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<style>
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body {{
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font-family: Arial, sans-serif;
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line-height: 1.6;
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padding: 20px;
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max-width: 800px;
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margin: 0 auto;
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}}
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h1, h2, h3 {{
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color: #333;
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}}
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code {{
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background: #f4f4f4;
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padding: 2px 4px;
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border-radius: 3px;
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}}
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pre {{
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background: #f4f4f4;
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padding: 10px;
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border-radius: 5px;
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overflow: auto;
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}}
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blockquote {{
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border-left: 4px solid #ddd;
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padding-left: 15px;
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color: #666;
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}}
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</style>
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</head>
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<body>
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{content}
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</body>
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</html>
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"""
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def toggle_preview(self):
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if self.preview.isVisible():
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self.preview.hide()
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else:
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self.preview.show()
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def insert_bold(self):
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cursor = self.editor.textCursor()
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if cursor.hasSelection():
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text = cursor.selectedText()
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cursor.insertText(f"**{text}**")
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else:
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cursor.insertText("****")
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cursor.movePosition(QTextCursor.Left, QTextCursor.MoveAnchor, 2)
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self.editor.setTextCursor(cursor)
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def insert_italic(self):
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cursor = self.editor.textCursor()
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if cursor.hasSelection():
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text = cursor.selectedText()
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cursor.insertText(f"*{text}*")
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else:
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cursor.insertText("**")
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cursor.movePosition(QTextCursor.Left, QTextCursor.MoveAnchor, 1)
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self.editor.setTextCursor(cursor)
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def insert_heading(self, level):
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cursor = self.editor.textCursor()
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cursor.insertText("#" * level + " ")
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def export_html(self):
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path, _ = QFileDialog.getSaveFileName(self, "导出HTML", "", "HTML文件 (*.html)")
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if path:
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try:
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text = self.editor.toPlainText()
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html = markdown.markdown(text)
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full_html = self.get_preview_html(html)
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with open(path, 'w', encoding='utf-8') as f:
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f.write(full_html)
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self.status_bar.showMessage(f"已导出: {path}")
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QMessageBox.information(self, "成功", f"HTML已导出到: {path}")
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except Exception as e:
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QMessageBox.critical(self, "错误", f"导出失败: {str(e)}")
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def load_settings(self):
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# 加载设置
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geometry = self.settings.value("geometry")
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if geometry:
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self.restoreGeometry(geometry)
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splitter_state = self.settings.value("splitter")
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if splitter_state:
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self.splitter.restoreState(splitter_state)
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def save_settings(self):
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# 保存设置
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self.settings.setValue("geometry", self.saveGeometry())
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self.settings.setValue("splitter", self.splitter.saveState())
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def closeEvent(self, event):
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if self.check_save():
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self.save_settings()
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event.accept()
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else:
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event.ignore()
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if __name__ == "__main__":
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# 设置UTF-8编码
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if hasattr(sys, 'setdefaultencoding'):
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sys.setdefaultencoding('utf-8')
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app = QApplication(sys.argv)
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app.setApplicationName("SunsetMD")
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# 创建编辑器实例
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window = MarkdownEditor()
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window.show()
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sys.exit(app.exec_())
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