样式表优化

src/ui/word_style_ui.py

@@ -238,18 +238,19 @@ class WordRibbon(QFrame):
         preview_layout.setSpacing(8)
 
         style_items = [
-            ("正文", "font-size:14px;"),
-            ("无间隔", "font-size:14px;"),
-            ("标题 1", "font-size:22px; font-weight:bold; color:#2E75B6;"),
-            ("标题 2", "font-size:18px; color:#2E75B6;"),
-            ("标题 3", "font-size:16px; font-weight:bold;"),
-            ("副标题", "font-size:14px; font-style:italic; color:#555;"),
-            ("强调", "font-size:14px; color:#C0504D;"),
+            ("正文", "font-size:14px;", "body_text_preview_btn"),
+            ("无间隔", "font-size:14px;", "no_spacing_preview_btn"),
+            ("标题 1", "font-size:22px; font-weight:bold; color:#2E75B6;", "heading1_preview_btn"),
+            ("标题 2", "font-size:18px; color:#2E75B6;", "heading2_preview_btn"),
+            ("标题 3", "font-size:16px; font-weight:bold;", "heading3_preview_btn"),
+            ("副标题", "font-size:14px; font-style:italic; color:#555;", "subtitle_preview_btn"),
+            ("强调", "font-size:14px; color:#C0504D;", "emphasis_preview_btn"),
         ]
 
-        for text, style in style_items:
+        for text, style, obj_name in style_items:
             btn = QPushButton(text)
             btn.setFixedSize(95, 60)
+            btn.setObjectName(obj_name)
             btn.setStyleSheet(f"""
                 QPushButton {{
                     background: white;
@@ -264,6 +265,9 @@ class WordRibbon(QFrame):
                 }}
             """)
             preview_layout.addWidget(btn)
+            
+            # 将按钮保存为实例属性，以便主窗口可以连接信号
+            setattr(self, obj_name, btn)
 
         preview_layout.addStretch()
 
@@ -300,6 +304,9 @@ class WordRibbon(QFrame):
         self.update_combo_styles(is_dark)
         self.update_font_button_styles(is_dark)
         
+        # 更新样式预览按钮样式
+        self.update_style_preview_buttons(is_dark)
+        
         # 更新天气组件样式
         if hasattr(self, 'weather_icon_label') and self.weather_icon_label is not None:
             self.weather_icon_label.setStyleSheet(f"""
@@ -397,6 +404,50 @@ class WordRibbon(QFrame):
         # 更新字体工具栏按钮样式
         self.update_font_button_styles(is_dark)
     
+    def update_style_preview_buttons(self, is_dark):
+        """更新样式预览按钮样式"""
+        colors = theme_manager.get_current_theme_colors()
+        
+        # 样式预览按钮配置
+        style_items = [
+            ("正文", "font-size:14px;", "body_text_preview_btn"),
+            ("无间隔", "font-size:14px;", "no_spacing_preview_btn"),
+            ("标题 1", "font-size:22px; font-weight:bold; color:#2E75B6;", "heading1_preview_btn"),
+            ("标题 2", "font-size:18px; color:#2E75B6;", "heading2_preview_btn"),
+            ("标题 3", "font-size:16px; font-weight:bold;", "heading3_preview_btn"),
+            ("副标题", "font-size:14px; font-style:italic; color:#555;", "subtitle_preview_btn"),
+            ("强调", "font-size:14px; color:#C0504D;", "emphasis_preview_btn"),
+        ]
+        
+        for text, style, obj_name in style_items:
+            if hasattr(self, obj_name):
+                btn = getattr(self, obj_name)
+                # 根据主题调整颜色
+                if is_dark:
+                    # 黑色模式下的颜色调整
+                    if "color:#2E75B6" in style:
+                        style = style.replace("color:#2E75B6", "color:#5B9BD5")
+                    elif "color:#555" in style:
+                        style = style.replace("color:#555", "color:#999")
+                    elif "color:#C0504D" in style:
+                        style = style.replace("color:#C0504D", "color:#E74C3C")
+                
+                btn.setStyleSheet(f"""
+                    QPushButton {{
+                        background-color: {colors['surface']};
+                        border: 1px solid {colors['border']};
+                        border-radius: 3px;
+                        text-align: left;
+                        padding: 5px;
+                        color: {colors['text']};
+                        {style}
+                    }}
+                    QPushButton:hover {{
+                        border: 1px solid {colors['accent']};
+                        background-color: {colors['surface_hover']};
+                    }}
+                """)
+    
     def update_font_button_styles(self, is_dark):
         """更新字体工具栏按钮样式"""
         colors = theme_manager.get_current_theme_colors()

src/word_main_window.py

@@ -974,6 +974,22 @@ class WordStyleMainWindow(QMainWindow):
         if hasattr(self.ribbon, 'body_text_btn'):
             self.ribbon.body_text_btn.clicked.connect(self.on_body_text_clicked)
         
+        # 样式预览按钮信号
+        if hasattr(self.ribbon, 'body_text_preview_btn'):
+            self.ribbon.body_text_preview_btn.clicked.connect(self.on_body_text_clicked)
+        if hasattr(self.ribbon, 'no_spacing_preview_btn'):
+            self.ribbon.no_spacing_preview_btn.clicked.connect(self.on_no_spacing_clicked)
+        if hasattr(self.ribbon, 'heading1_preview_btn'):
+            self.ribbon.heading1_preview_btn.clicked.connect(self.on_heading1_clicked)
+        if hasattr(self.ribbon, 'heading2_preview_btn'):
+            self.ribbon.heading2_preview_btn.clicked.connect(self.on_heading2_clicked)
+        if hasattr(self.ribbon, 'heading3_preview_btn'):
+            self.ribbon.heading3_preview_btn.clicked.connect(self.on_heading3_clicked)
+        if hasattr(self.ribbon, 'subtitle_preview_btn'):
+            self.ribbon.subtitle_preview_btn.clicked.connect(self.on_subtitle_clicked)
+        if hasattr(self.ribbon, 'emphasis_preview_btn'):
+            self.ribbon.emphasis_preview_btn.clicked.connect(self.on_emphasis_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)
@@ -1482,6 +1498,18 @@ class WordStyleMainWindow(QMainWindow):
         """正文按钮点击处理"""
         self.apply_body_text_style()
     
+    def on_subtitle_clicked(self):
+        """副标题按钮点击处理"""
+        self.apply_subtitle_style()
+    
+    def on_emphasis_clicked(self):
+        """强调按钮点击处理"""
+        self.apply_emphasis_style()
+    
+    def on_no_spacing_clicked(self):
+        """无间隔按钮点击处理"""
+        self.apply_no_spacing_style()
+    
     def on_align_left_clicked(self):
         """左对齐按钮点击处理"""
         self.apply_alignment(Qt.AlignLeft)
@@ -1589,6 +1617,84 @@ class WordStyleMainWindow(QMainWindow):
         self.text_edit.setCurrentCharFormat(char_format)
         self.text_edit.textCursor().setBlockFormat(block_format)
     
+    def apply_subtitle_style(self):
+        """应用副标题样式"""
+        cursor = self.text_edit.textCursor()
+        
+        # 创建字符格式
+        char_format = QTextCharFormat()
+        char_format.setFontPointSize(16)  # 副标题字号
+        char_format.setFontWeight(QFont.Bold)  # 加粗
+        char_format.setFontItalic(True)  # 斜体
+        
+        # 创建块格式（段落格式）
+        block_format = QTextBlockFormat()
+        block_format.setTopMargin(12)
+        block_format.setBottomMargin(8)
+        
+        # 应用格式
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的格式
+            cursor.mergeCharFormat(char_format)
+        else:
+            # 如果没有选中文本，更改当前段落的格式
+            cursor.setBlockFormat(block_format)
+            cursor.mergeCharFormat(char_format)
+            # 将光标移动到段落末尾并添加换行
+            cursor.movePosition(QTextCursor.EndOfBlock)
+            cursor.insertText("\n")
+        
+        # 设置文本编辑器的默认格式
+        self.text_edit.setCurrentCharFormat(char_format)
+        self.text_edit.textCursor().setBlockFormat(block_format)
+    
+    def apply_emphasis_style(self):
+        """应用强调样式"""
+        cursor = self.text_edit.textCursor()
+        
+        # 创建字符格式
+        char_format = QTextCharFormat()
+        char_format.setFontPointSize(12)  # 正文字号
+        char_format.setFontWeight(QFont.Bold)  # 加粗
+        char_format.setFontItalic(True)  # 斜体
+        char_format.setForeground(QColor(0, 0, 128))  # 深蓝色
+        
+        # 应用格式（只影响字符格式，不影响段落格式）
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的格式
+            cursor.mergeCharFormat(char_format)
+        else:
+            # 如果没有选中文本，设置默认字符格式供后续输入使用
+            self.text_edit.setCurrentCharFormat(char_format)
+    
+    def apply_no_spacing_style(self):
+        """应用无间隔样式"""
+        cursor = self.text_edit.textCursor()
+        
+        # 创建字符格式
+        char_format = QTextCharFormat()
+        char_format.setFontPointSize(12)  # 正文字号
+        char_format.setFontWeight(QFont.Normal)  # 正常粗细
+        
+        # 创建块格式（段落格式）
+        block_format = QTextBlockFormat()
+        block_format.setTopMargin(0)  # 无上边距
+        block_format.setBottomMargin(0)  # 无下边距
+        block_format.setLineHeight(100, QTextBlockFormat.SingleHeight)  # 行高100%，无额外间距
+        
+        # 应用格式
+        if cursor.hasSelection():
+            # 如果有选中文本，只更改选中文本的格式
+            cursor.mergeCharFormat(char_format)
+        else:
+            # 如果没有选中文本，更改当前段落的格式
+            cursor.setBlockFormat(block_format)
+            cursor.mergeCharFormat(char_format)
+        
+        # 设置文本编辑器的默认格式
+        self.text_edit.setCurrentCharFormat(char_format)
+        self.text_edit.textCursor().setBlockFormat(block_format)
+    
     def apply_alignment(self, alignment):
         """应用段落对齐方式"""
         cursor = self.text_edit.textCursor()