2025/10/19

src/ui/word_style_ui.py

@@ -2,7 +2,8 @@
 from PyQt5.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLabel, 
                              QPushButton, QTabWidget, QFrame, QTextEdit, 
                              QToolButton, QMenuBar, QStatusBar, QGroupBox,
-                             QComboBox, QSpinBox, QFontComboBox, QToolBar)
+                             QComboBox, QSpinBox, QFontComboBox, QToolBar,
+                             QSizePolicy)
 from PyQt5.QtCore import Qt, QSize
 from PyQt5.QtGui import QFont, QIcon, QPalette, QColor
 
@@ -31,49 +32,6 @@ class WordRibbon(QFrame):
         main_layout.setContentsMargins(0, 0, 0, 0)
         main_layout.setSpacing(0)
         
-        # 标签栏
-        self.tab_bar = QWidget()
-        self.tab_bar.setFixedHeight(25)
-        self.tab_bar.setStyleSheet("""
-            QWidget {
-                background-color: #f3f2f1;
-                border-bottom: 1px solid #e1e1e1;
-            }
-        """)
-        
-        tab_layout = QHBoxLayout()
-        tab_layout.setContentsMargins(10, 0, 0, 0)
-        tab_layout.setSpacing(0)
-        
-        # 创建标签按钮
-        self.tabs = {}
-        tab_names = ['文件', '开始', '插入', '设计', '布局', '引用', '邮件', '审阅', '视图', '帮助']
-        for name in tab_names:
-            tab_btn = QPushButton(name)
-            tab_btn.setFlat(True)
-            tab_btn.setFixedHeight(25)
-            tab_btn.setStyleSheet("""
-                QPushButton {
-                    background-color: transparent;
-                    border: none;
-                    padding: 5px 15px;
-                    font-size: 12px;
-                    color: #333333;
-                }
-                QPushButton:hover {
-                    background-color: #e1e1e1;
-                }
-                QPushButton:checked {
-                    background-color: #ffffff;
-                    border: 1px solid #d0d0d0;
-                    border-bottom: 1px solid #ffffff;
-                }
-            """)
-            self.tabs[name] = tab_btn
-            tab_layout.addWidget(tab_btn)
-        
-        self.tab_bar.setLayout(tab_layout)
-        
         # 功能区
         self.ribbon_area = QFrame()
         self.ribbon_area.setStyleSheet("""
@@ -93,33 +51,12 @@ class WordRibbon(QFrame):
         
         self.ribbon_area.setLayout(ribbon_layout)
         
-        main_layout.addWidget(self.tab_bar)
         main_layout.addWidget(self.ribbon_area)
         self.setLayout(main_layout)
-        
-        # 设置默认选中的标签
-        self.tabs['开始'].setChecked(True)
     
     def setup_home_tab(self, layout):
         """设置开始标签的功能区内容"""
         
-        # 剪贴板组
-        clipboard_group = self.create_ribbon_group("剪贴板")
-        paste_btn = self.create_ribbon_button("粘贴", "Ctrl+V", "paste")
-        cut_btn = self.create_ribbon_button("剪切", "Ctrl+X", "cut")
-        copy_btn = self.create_ribbon_button("复制", "Ctrl+C", "copy")
-        
-        clipboard_layout = QVBoxLayout()
-        clipboard_layout.addWidget(paste_btn)
-        
-        small_btn_layout = QHBoxLayout()
-        small_btn_layout.addWidget(cut_btn)
-        small_btn_layout.addWidget(copy_btn)
-        clipboard_layout.addLayout(small_btn_layout)
-        
-        clipboard_group.setLayout(clipboard_layout)
-        layout.addWidget(clipboard_group)
-        
         # 字体组
         font_group = self.create_ribbon_group("字体")
         
@@ -127,10 +64,12 @@ class WordRibbon(QFrame):
         font_layout = QHBoxLayout()
         self.font_combo = QFontComboBox()
         self.font_combo.setFixedWidth(120)
+        self.font_combo.currentFontChanged.connect(self.on_font_changed)
         self.font_size_combo = QComboBox()
         self.font_size_combo.addItems(['8', '9', '10', '11', '12', '14', '16', '18', '20', '22', '24', '26', '28', '36', '48', '72'])
         self.font_size_combo.setFixedWidth(50)
         self.font_size_combo.setCurrentText('12')
+        self.font_size_combo.currentTextChanged.connect(self.on_font_size_changed)
         
         font_layout.addWidget(self.font_combo)
         font_layout.addWidget(self.font_size_combo)
@@ -138,8 +77,11 @@ class WordRibbon(QFrame):
         # 字体样式按钮
         font_style_layout = QHBoxLayout()
         self.bold_btn = self.create_toggle_button("B", "bold")
+        self.bold_btn.clicked.connect(self.on_bold_clicked)
         self.italic_btn = self.create_toggle_button("I", "italic")
+        self.italic_btn.clicked.connect(self.on_italic_clicked)
         self.underline_btn = self.create_toggle_button("U", "underline")
+        self.underline_btn.clicked.connect(self.on_underline_clicked)
         
         font_style_layout.addWidget(self.bold_btn)
         font_style_layout.addWidget(self.italic_btn)
@@ -182,17 +124,37 @@ class WordRibbon(QFrame):
         
         # 编辑组
         editing_group = self.create_ribbon_group("编辑")
-        find_btn = self.create_ribbon_button("查找", "Ctrl+F", "find")
-        replace_btn = self.create_ribbon_button("替换", "Ctrl+H", "replace")
+        self.find_btn = self.create_ribbon_button("查找", "Ctrl+F", "find")
+        self.replace_btn = self.create_ribbon_button("替换", "Ctrl+H", "replace")
         
         editing_layout = QVBoxLayout()
-        editing_layout.addWidget(find_btn)
-        editing_layout.addWidget(replace_btn)
+        editing_layout.addWidget(self.find_btn)
+        editing_layout.addWidget(self.replace_btn)
         editing_group.setLayout(editing_layout)
         layout.addWidget(editing_group)
         
         layout.addStretch()
     
+    def on_font_changed(self, font):
+        """字体变化处理"""
+        pass
+    
+    def on_font_size_changed(self, size):
+        """字体大小变化处理"""
+        pass
+    
+    def on_bold_clicked(self):
+        """粗体按钮点击处理"""
+        pass
+    
+    def on_italic_clicked(self):
+        """斜体按钮点击处理"""
+        pass
+    
+    def on_underline_clicked(self):
+        """下划线按钮点击处理"""
+        pass
+    
     def create_ribbon_group(self, title):
         """创建功能区组"""
         group = QGroupBox(title)
@@ -350,6 +312,21 @@ class WordStyleToolBar(QToolBar):
         self.addWidget(undo_btn)
         self.addWidget(redo_btn)
         self.addSeparator()
+        
+        # 添加弹性空间，将后面的按钮推到最右侧
+        # 创建一个具有扩展策略的QWidget来实现spacer效果
+        spacer = QWidget()
+        spacer.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
+        self.addWidget(spacer)
+        
+        # 添加批注、编辑、共享按钮到最右侧
+        comment_btn = self.create_quick_button("批注", "")
+        edit_btn = self.create_quick_button("编辑", "")
+        share_btn = self.create_quick_button("共享", "")
+        
+        self.addWidget(comment_btn)
+        self.addWidget(edit_btn)
+        self.addWidget(share_btn)
     
     def create_quick_button(self, text, shortcut):
         """创建快速访问按钮"""

src/word_main_window.py

@@ -3,9 +3,10 @@ import sys
 import os
 from PyQt5.QtWidgets import (QMainWindow, QWidget, QVBoxLayout, QHBoxLayout, 
                              QTextEdit, QLabel, QSplitter, QFrame, QMenuBar,
-                             QAction, QFileDialog, QMessageBox, QApplication)
+                             QAction, QFileDialog, QMessageBox, QApplication,
+                             QDialog, QLineEdit, QCheckBox, QPushButton)
 from PyQt5.QtCore import Qt, QThread, pyqtSignal, QTimer, QRect
-from PyQt5.QtGui import QFont, QPalette, QColor, QIcon, QPixmap, QTextCharFormat
+from PyQt5.QtGui import QFont, QPalette, QColor, QIcon, QPixmap, QTextCharFormat, QTextCursor, QTextDocument
 
 from ui.word_style_ui import (WordRibbon, WordStatusBar, WordTextEdit, 
                              WordStyleToolBar)
@@ -231,10 +232,106 @@ class WordStyleMainWindow(QMainWindow):
         
         # 打印布局
         print_layout_action = QAction('打印布局', self)
+        print_layout_action.setCheckable(True)
         print_layout_action.setChecked(True)
         print_layout_action.triggered.connect(self.toggle_print_layout)
         view_menu.addAction(print_layout_action)
         
+        view_menu.addSeparator()
+        
+        # 页面布局子菜单
+        layout_menu = view_menu.addMenu('页面布局')
+        
+        # 页面颜色
+        page_color_menu = layout_menu.addMenu('页面颜色')
+        white_action = QAction('白色', self)
+        white_action.triggered.connect(lambda: self.set_page_color('white'))
+        page_color_menu.addAction(white_action)
+        
+        light_blue_action = QAction('浅蓝色', self)
+        light_blue_action.triggered.connect(lambda: self.set_page_color('light_blue'))
+        page_color_menu.addAction(light_blue_action)
+        
+        light_yellow_action = QAction('浅黄色', self)
+        light_yellow_action.triggered.connect(lambda: self.set_page_color('light_yellow'))
+        page_color_menu.addAction(light_yellow_action)
+        
+        light_green_action = QAction('浅绿色', self)
+        light_green_action.triggered.connect(lambda: self.set_page_color('light_green'))
+        page_color_menu.addAction(light_green_action)
+        
+        # 页面边距
+        margin_menu = layout_menu.addMenu('页面边距')
+        normal_margin_action = QAction('普通', self)
+        normal_margin_action.triggered.connect(lambda: self.set_page_margins('normal'))
+        margin_menu.addAction(normal_margin_action)
+        
+        narrow_margin_action = QAction('窄', self)
+        narrow_margin_action.triggered.connect(lambda: self.set_page_margins('narrow'))
+        margin_menu.addAction(narrow_margin_action)
+        
+        wide_margin_action = QAction('宽', self)
+        wide_margin_action.triggered.connect(lambda: self.set_page_margins('wide'))
+        margin_menu.addAction(wide_margin_action)
+        
+        # 缩放子菜单
+        zoom_menu = view_menu.addMenu('缩放')
+        
+        zoom_in_action = QAction('放大', self)
+        zoom_in_action.setShortcut('Ctrl++')
+        zoom_in_action.triggered.connect(self.zoom_in)
+        zoom_menu.addAction(zoom_in_action)
+        
+        zoom_out_action = QAction('缩小', self)
+        zoom_out_action.setShortcut('Ctrl+-')
+        zoom_out_action.triggered.connect(self.zoom_out)
+        zoom_menu.addAction(zoom_out_action)
+        
+        zoom_100_action = QAction('实际大小', self)
+        zoom_100_action.setShortcut('Ctrl+0')
+        zoom_100_action.triggered.connect(self.zoom_100)
+        zoom_menu.addAction(zoom_100_action)
+        
+        zoom_menu.addSeparator()
+        
+        # 预设缩放选项
+        zoom_50_action = QAction('50%', self)
+        zoom_50_action.triggered.connect(lambda: self.set_zoom_level(50))
+        zoom_menu.addAction(zoom_50_action)
+        
+        zoom_75_action = QAction('75%', self)
+        zoom_75_action.triggered.connect(lambda: self.set_zoom_level(75))
+        zoom_menu.addAction(zoom_75_action)
+        
+        zoom_100_action2 = QAction('100%', self)
+        zoom_100_action2.triggered.connect(lambda: self.set_zoom_level(100))
+        zoom_menu.addAction(zoom_100_action2)
+        
+        zoom_125_action = QAction('125%', self)
+        zoom_125_action.triggered.connect(lambda: self.set_zoom_level(125))
+        zoom_menu.addAction(zoom_125_action)
+        
+        zoom_150_action = QAction('150%', self)
+        zoom_150_action.triggered.connect(lambda: self.set_zoom_level(150))
+        zoom_menu.addAction(zoom_150_action)
+        
+        zoom_200_action = QAction('200%', self)
+        zoom_200_action.triggered.connect(lambda: self.set_zoom_level(200))
+        zoom_menu.addAction(zoom_200_action)
+        
+        view_menu.addSeparator()
+        
+        # 显示选项
+        grid_lines_action = QAction('网格线', self)
+        grid_lines_action.setCheckable(True)
+        grid_lines_action.triggered.connect(self.toggle_grid_lines)
+        view_menu.addAction(grid_lines_action)
+        
+        ruler_action = QAction('标尺', self)
+        ruler_action.setCheckable(True)
+        ruler_action.triggered.connect(self.toggle_ruler)
+        view_menu.addAction(ruler_action)
+        
         # 帮助菜单
         help_menu = menubar.addMenu('帮助(H)')
         
@@ -318,9 +415,23 @@ class WordStyleMainWindow(QMainWindow):
         self.text_edit.textChanged.connect(self.on_text_changed)
         
         # Ribbon按钮信号
-        if hasattr(self.ribbon, 'tabs'):
-            for tab_name, tab_btn in self.ribbon.tabs.items():
-                tab_btn.clicked.connect(lambda checked, name=tab_name: self.on_tab_changed(name))
+        # 标签栏已删除，相关代码已移除
+        
+        # 字体设置信号
+        if hasattr(self.ribbon, 'font_combo'):
+            self.ribbon.font_combo.currentFontChanged.connect(self.on_font_changed)
+            self.ribbon.font_size_combo.currentTextChanged.connect(self.on_font_size_changed)
+            self.ribbon.bold_btn.clicked.connect(self.on_bold_clicked)
+            self.ribbon.italic_btn.clicked.connect(self.on_italic_clicked)
+            self.ribbon.underline_btn.clicked.connect(self.on_underline_clicked)
+        
+        # 查找和替换按钮信号
+        if hasattr(self.ribbon, 'find_btn'):
+            self.ribbon.find_btn.clicked.connect(self.show_find_dialog)
+        if hasattr(self.ribbon, 'replace_btn'):
+            self.ribbon.replace_btn.clicked.connect(self.show_replace_dialog)
+        
+        # 页面布局信号已在菜单中直接连接，无需在此重复连接
     
     def on_text_changed(self):
         """文本变化处理 - 逐步显示模式"""
@@ -389,14 +500,71 @@ class WordStyleMainWindow(QMainWindow):
             self.is_modified = True
             self.update_window_title()
     
-    def on_tab_changed(self, tab_name):
-        """标签切换处理"""
-        # 更新标签状态
-        for name, btn in self.ribbon.tabs.items():
-            btn.setChecked(name == tab_name)
-        
-        # 这里可以根据不同标签切换不同的功能区内容
-        print(f"切换到标签: {tab_name}")
+
+    
+    def on_font_changed(self, font):
+        """字体更改处理"""
+        cursor = self.text_edit.textCursor()
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的字体
+            fmt = cursor.charFormat()
+            fmt.setFontFamily(font.family())
+            cursor.setCharFormat(fmt)
+        else:
+            # 如果没有选中文本，更改整个文档的默认字体
+            self.text_edit.setFontFamily(font.family())
+    
+    def on_font_size_changed(self, size):
+        """字体大小更改处理"""
+        try:
+            font_size = int(size)
+            cursor = self.text_edit.textCursor()
+            if cursor.hasSelection():
+                # 如果有选中文本，只更改选中文本的字体大小
+                fmt = cursor.charFormat()
+                fmt.setFontPointSize(font_size)
+                cursor.setCharFormat(fmt)
+            else:
+                # 如果没有选中文本，更改整个文档的默认字体大小
+                self.text_edit.setFontPointSize(font_size)
+        except ValueError:
+            pass  # 忽略无效的字体大小
+    
+    def on_bold_clicked(self, checked):
+        """粗体按钮点击处理"""
+        cursor = self.text_edit.textCursor()
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的粗体样式
+            fmt = cursor.charFormat()
+            fmt.setFontWeight(QFont.Bold if checked else QFont.Normal)
+            cursor.setCharFormat(fmt)
+        else:
+            # 如果没有选中文本，更改整个文档的默认粗体样式
+            self.text_edit.setFontWeight(QFont.Bold if checked else QFont.Normal)
+    
+    def on_italic_clicked(self, checked):
+        """斜体按钮点击处理"""
+        cursor = self.text_edit.textCursor()
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的斜体样式
+            fmt = cursor.charFormat()
+            fmt.setFontItalic(checked)
+            cursor.setCharFormat(fmt)
+        else:
+            # 如果没有选中文本，更改整个文档的默认斜体样式
+            self.text_edit.setFontItalic(checked)
+    
+    def on_underline_clicked(self, checked):
+        """下划线按钮点击处理"""
+        cursor = self.text_edit.textCursor()
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的下划线样式
+            fmt = cursor.charFormat()
+            fmt.setFontUnderline(checked)
+            cursor.setCharFormat(fmt)
+        else:
+            # 如果没有选中文本，更改整个文档的默认下划线样式
+            self.text_edit.setFontUnderline(checked)
     
     def update_weather_display(self, weather_data):
         """更新天气显示"""
@@ -600,6 +768,319 @@ class WordStyleMainWindow(QMainWindow):
         # 这里可以实现打印布局的逻辑
         self.status_bar.showMessage("打印布局功能开发中...", 3000)
     
+    def set_page_color(self, color):
+        """设置页面颜色"""
+        color_map = {
+            'white': '#ffffff',
+            'light_blue': '#e6f3ff',
+            'light_yellow': '#fffde6',
+            'light_green': '#e6ffe6'
+        }
+        
+        if color in color_map:
+            bg_color = color_map[color]
+            # 更新文本编辑区域的背景色
+            current_style = self.text_edit.styleSheet()
+            # 移除旧的背景色设置
+            import re
+            current_style = re.sub(r'background-color:\s*#[a-fA-F0-9]+;', '', current_style)
+            # 添加新的背景色设置
+            new_style = current_style + f"\nbackground-color: {bg_color};"
+            self.text_edit.setStyleSheet(new_style)
+            self.status_bar.showMessage(f"页面颜色已设置为{color}", 2000)
+    
+    def set_page_margins(self, margin_type):
+        """设置页面边距"""
+        margin_map = {
+            'normal': (50, 50, 50, 50),
+            'narrow': (20, 20, 20, 20),
+            'wide': (80, 80, 80, 80)
+        }
+        
+        if margin_type in margin_map:
+            margins = margin_map[margin_type]
+            # 更新文档容器的边距
+            # text_edit的父级是document_layout，父级的父级是document_container
+            container = self.text_edit.parent().parent()  # 获取文档容器
+            if container and hasattr(container, 'layout'):
+                layout = container.layout()
+                if layout:
+                    layout.setContentsMargins(margins[0], margins[1], margins[2], margins[3])
+                    self.status_bar.showMessage(f"页面边距已设置为{margin_type}", 2000)
+    
+    def zoom_in(self):
+        """放大"""
+        self.adjust_zoom_level(10)
+    
+    def zoom_out(self):
+        """缩小"""
+        self.adjust_zoom_level(-10)
+    
+    def zoom_100(self):
+        """实际大小"""
+        self.set_zoom_level(100)
+    
+    def set_zoom_level(self, level):
+        """设置缩放级别"""
+        if 10 <= level <= 500:  # 限制缩放范围在10%到500%之间
+            # 获取当前字体大小并调整
+            current_font = self.text_edit.currentFont()
+            base_size = 12  # 基准字体大小
+            new_size = base_size * (level / 100)
+            
+            # 应用新的字体大小
+            current_font.setPointSizeF(new_size)
+            self.text_edit.setFont(current_font)
+            
+            self.status_bar.showMessage(f"缩放级别: {level}%", 2000)
+    
+    def adjust_zoom_level(self, delta):
+        """调整缩放级别"""
+        # 获取当前字体大小
+        current_font = self.text_edit.currentFont()
+        current_size = current_font.pointSizeF()
+        base_size = 12  # 基准字体大小
+        
+        # 计算当前缩放百分比
+        current_zoom = (current_size / base_size) * 100
+        new_zoom = current_zoom + delta
+        
+        # 限制缩放范围
+        if 10 <= new_zoom <= 500:
+            self.set_zoom_level(int(new_zoom))
+    
+    def toggle_grid_lines(self):
+        """切换网格线显示"""
+        self.status_bar.showMessage("网格线功能开发中...", 3000)
+    
+    def toggle_ruler(self):
+        """切换标尺显示"""
+        self.status_bar.showMessage("标尺功能开发中...", 3000)
+    
+    def show_find_dialog(self):
+        """显示查找对话框"""
+        # 创建查找对话框
+        dialog = QDialog(self)
+        dialog.setWindowTitle("查找")
+        dialog.setFixedSize(400, 150)
+        
+        layout = QVBoxLayout()
+        
+        # 查找内容输入
+        find_layout = QHBoxLayout()
+        find_label = QLabel("查找内容:")
+        self.find_edit = QLineEdit()
+        find_layout.addWidget(find_label)
+        find_layout.addWidget(self.find_edit)
+        layout.addLayout(find_layout)
+        
+        # 选项
+        options_layout = QHBoxLayout()
+        self.case_sensitive_checkbox = QCheckBox("区分大小写")
+        self.whole_words_checkbox = QCheckBox("全字匹配")
+        options_layout.addWidget(self.case_sensitive_checkbox)
+        options_layout.addWidget(self.whole_words_checkbox)
+        options_layout.addStretch()
+        layout.addLayout(options_layout)
+        
+        # 按钮
+        buttons_layout = QHBoxLayout()
+        find_next_btn = QPushButton("查找下一个")
+        find_next_btn.clicked.connect(lambda: self.find_text(dialog))
+        cancel_btn = QPushButton("取消")
+        cancel_btn.clicked.connect(dialog.close)
+        buttons_layout.addWidget(find_next_btn)
+        buttons_layout.addWidget(cancel_btn)
+        layout.addLayout(buttons_layout)
+        
+        dialog.setLayout(layout)
+        dialog.exec_()
+    
+    def find_text(self, dialog):
+        """执行查找操作"""
+        search_text = self.find_edit.text()
+        if not search_text:
+            QMessageBox.warning(self, "查找", "请输入查找内容")
+            return
+        
+        # 获取当前光标位置
+        cursor = self.text_edit.textCursor()
+        start_pos = cursor.position()
+        
+        # 设置查找选项
+        flags = QTextDocument.FindFlags()
+        if self.case_sensitive_checkbox.isChecked():
+            flags |= QTextDocument.FindCaseSensitively
+        if self.whole_words_checkbox.isChecked():
+            flags |= QTextDocument.FindWholeWords
+        
+        # 执行查找
+        found_cursor = self.text_edit.document().find(search_text, start_pos, flags)
+        
+        if found_cursor.isNull():
+            # 如果没找到，从文档开始处重新查找
+            found_cursor = self.text_edit.document().find(search_text, 0, flags)
+            
+        if not found_cursor.isNull():
+            # 选中找到的文本
+            self.text_edit.setTextCursor(found_cursor)
+            self.text_edit.ensureCursorVisible()
+        else:
+            QMessageBox.information(self, "查找", f"找不到 '{search_text}'")
+    
+    def show_replace_dialog(self):
+        """显示替换对话框"""
+        # 创建替换对话框
+        dialog = QDialog(self)
+        dialog.setWindowTitle("替换")
+        dialog.setFixedSize(400, 200)
+        
+        layout = QVBoxLayout()
+        
+        # 查找内容输入
+        find_layout = QHBoxLayout()
+        find_label = QLabel("查找内容:")
+        self.replace_find_edit = QLineEdit()
+        find_layout.addWidget(find_label)
+        find_layout.addWidget(self.replace_find_edit)
+        layout.addLayout(find_layout)
+        
+        # 替换为输入
+        replace_layout = QHBoxLayout()
+        replace_label = QLabel("替换为:")
+        self.replace_edit = QLineEdit()
+        replace_layout.addWidget(replace_label)
+        replace_layout.addWidget(self.replace_edit)
+        layout.addLayout(replace_layout)
+        
+        # 选项
+        options_layout = QHBoxLayout()
+        self.replace_case_sensitive_checkbox = QCheckBox("区分大小写")
+        self.replace_whole_words_checkbox = QCheckBox("全字匹配")
+        options_layout.addWidget(self.replace_case_sensitive_checkbox)
+        options_layout.addWidget(self.replace_whole_words_checkbox)
+        options_layout.addStretch()
+        layout.addLayout(options_layout)
+        
+        # 按钮
+        buttons_layout = QHBoxLayout()
+        find_next_btn = QPushButton("查找下一个")
+        replace_btn = QPushButton("替换")
+        replace_all_btn = QPushButton("全部替换")
+        cancel_btn = QPushButton("取消")
+        
+        find_next_btn.clicked.connect(lambda: self.find_text_for_replace(dialog))
+        replace_btn.clicked.connect(lambda: self.replace_text(dialog))
+        replace_all_btn.clicked.connect(lambda: self.replace_all_text(dialog))
+        cancel_btn.clicked.connect(dialog.close)
+        
+        buttons_layout.addWidget(find_next_btn)
+        buttons_layout.addWidget(replace_btn)
+        buttons_layout.addWidget(replace_all_btn)
+        buttons_layout.addWidget(cancel_btn)
+        layout.addLayout(buttons_layout)
+        
+        dialog.setLayout(layout)
+        dialog.exec_()
+    
+    def find_text_for_replace(self, dialog):
+        """在替换对话框中执行查找操作"""
+        search_text = self.replace_find_edit.text()
+        if not search_text:
+            QMessageBox.warning(self, "查找", "请输入查找内容")
+            return
+        
+        # 获取当前光标位置
+        cursor = self.text_edit.textCursor()
+        start_pos = cursor.position()
+        
+        # 设置查找选项
+        flags = QTextDocument.FindFlags()
+        if self.replace_case_sensitive_checkbox.isChecked():
+            flags |= QTextDocument.FindCaseSensitively
+        if self.replace_whole_words_checkbox.isChecked():
+            flags |= QTextDocument.FindWholeWords
+        
+        # 执行查找
+        found_cursor = self.text_edit.document().find(search_text, start_pos, flags)
+        
+        if found_cursor.isNull():
+            # 如果没找到，从文档开始处重新查找
+            found_cursor = self.text_edit.document().find(search_text, 0, flags)
+            
+        if not found_cursor.isNull():
+            # 选中找到的文本
+            self.text_edit.setTextCursor(found_cursor)
+            self.text_edit.ensureCursorVisible()
+        else:
+            QMessageBox.information(self, "查找", f"找不到 '{search_text}'")
+    
+    def replace_text(self, dialog):
+        """替换当前选中的文本"""
+        search_text = self.replace_find_edit.text()
+        replace_text = self.replace_edit.text()
+        
+        # 检查是否有选中的文本且与查找内容匹配
+        cursor = self.text_edit.textCursor()
+        selected_text = cursor.selectedText()
+        
+        # 检查是否匹配（考虑大小写敏感选项）
+        match = False
+        if self.replace_case_sensitive_checkbox.isChecked():
+            match = selected_text == search_text
+        else:
+            match = selected_text.lower() == search_text.lower()
+        
+        if match:
+            # 替换选中的文本
+            cursor.insertText(replace_text)
+            # 继续查找下一个
+            self.find_text_for_replace(dialog)
+        else:
+            # 如果没有匹配的选中文本，执行查找
+            self.find_text_for_replace(dialog)
+    
+    def replace_all_text(self, dialog):
+        """替换所有匹配的文本"""
+        search_text = self.replace_find_edit.text()
+        replace_text = self.replace_edit.text()
+        
+        if not search_text:
+            QMessageBox.warning(self, "替换", "请输入查找内容")
+            return
+        
+        # 设置查找选项
+        flags = QTextDocument.FindFlags()
+        if self.replace_case_sensitive_checkbox.isChecked():
+            flags |= QTextDocument.FindCaseSensitively
+        if self.replace_whole_words_checkbox.isChecked():
+            flags |= QTextDocument.FindWholeWords
+        
+        # 保存当前光标位置
+        original_cursor = self.text_edit.textCursor()
+        
+        # 从文档开始处查找并替换所有匹配项
+        count = 0
+        cursor = self.text_edit.textCursor()
+        cursor.movePosition(QTextCursor.Start)
+        self.text_edit.setTextCursor(cursor)
+        
+        while True:
+            found_cursor = self.text_edit.document().find(search_text, cursor, flags)
+            if found_cursor.isNull():
+                break
+            
+            # 替换文本
+            found_cursor.insertText(replace_text)
+            count += 1
+            cursor = found_cursor
+        
+        # 恢复原始光标位置
+        self.text_edit.setTextCursor(original_cursor)
+        
+        # 显示替换结果
+        QMessageBox.information(self, "替换", f"已完成 {count} 处替换。")
+    
     def show_about(self):
         """显示关于对话框"""
         QMessageBox.about(