Optimize the Rendering of Inline Formulas, Subscripts and Superscripts, Bubble Charts, and Horizontal Bars

ReportEngine/renderers/chart_to_svg.py

@@ -160,6 +160,19 @@ class ChartToSVGConverter:
             if props.get('type'):
                 chart_type = props['type']
 
+            # Chart.js v4已移除horizontalBar类型，这里自动降级为bar并设置横向坐标
+            horizontal_bar = False
+            if chart_type and str(chart_type).lower() == 'horizontalbar':
+                chart_type = 'bar'
+                horizontal_bar = True
+
+            # 支持通过indexAxis: 'y' 强制横向柱状图
+            if isinstance(props, dict):
+                options = props.get('options') or {}
+                index_axis = (options.get('indexAxis') or props.get('indexAxis') or '').lower()
+                if index_axis == 'y':
+                    horizontal_bar = True
+
             # 提取数据
             data = widget_data.get('data', {})
             if not data:
@@ -172,10 +185,16 @@ class ChartToSVGConverter:
                 logger.debug("检测到词云图表，跳过chart_to_svg转换")
                 return None
 
-            render_method = getattr(self, f'_render_{chart_type}', None)
-            if not render_method:
-                logger.warning(f"不支持的图表类型: {chart_type}")
-                return None
+            # 分派渲染方法，特殊处理横向柱状图
+            if chart_type == 'bar':
+                return self._render_bar(data, props, width, height, dpi, horizontal=horizontal_bar)
+            elif chart_type == 'bubble':
+                return self._render_bubble(data, props, width, height, dpi)
+            else:
+                render_method = getattr(self, f'_render_{chart_type}', None)
+                if not render_method:
+                    logger.warning(f"不支持的图表类型: {chart_type}")
+                    return None
 
             # 创建图表并转换为SVG
             return render_method(data, props, width, height, dpi)
@@ -687,9 +706,10 @@ class ChartToSVGConverter:
         props: Dict[str, Any],
         width: int,
         height: int,
-        dpi: int
+        dpi: int,
+        horizontal: bool = False
     ) -> Optional[str]:
-        """渲染柱状图"""
+        """渲染柱状图（支持横向barh）"""
         try:
             labels = data.get('labels', [])
             datasets = data.get('datasets', [])
@@ -703,44 +723,147 @@ class ChartToSVGConverter:
             colors = self._get_colors(datasets)
 
             # 计算柱子位置
-            x = np.arange(len(labels))
+            positions = np.arange(len(labels))
             width_bar = 0.8 / len(datasets) if len(datasets) > 1 else 0.6
 
-            # 绘制每个数据系列
+            # 横向/纵向绘制
             for i, dataset in enumerate(datasets):
                 dataset_data = dataset.get('data', [])
                 label = dataset.get('label', f'系列{i+1}')
                 color = colors[i]
 
                 offset = (i - len(datasets)/2 + 0.5) * width_bar
-                ax.bar(
-                    x + offset,
-                    dataset_data,
-                    width_bar,
-                    label=label,
-                    color=color,
-                    alpha=0.8,
-                    edgecolor='white',
-                    linewidth=0.5
-                )
 
-            # 设置x轴标签
-            ax.set_xticks(x)
-            ax.set_xticklabels(labels, rotation=45, ha='right')
+                if horizontal:
+                    ax.barh(
+                        positions + offset,
+                        dataset_data,
+                        height=width_bar,
+                        label=label,
+                        color=color,
+                        alpha=0.8,
+                        edgecolor='white',
+                        linewidth=0.5
+                    )
+                else:
+                    ax.bar(
+                        positions + offset,
+                        dataset_data,
+                        width_bar,
+                        label=label,
+                        color=color,
+                        alpha=0.8,
+                        edgecolor='white',
+                        linewidth=0.5
+                    )
+
+            # 轴标签/网格
+            if horizontal:
+                ax.set_yticks(positions)
+                ax.set_yticklabels(labels)
+                ax.invert_yaxis()  # 与Chart.js横向排列保持一致
+                ax.grid(True, alpha=0.3, linestyle='--', axis='x')
+            else:
+                ax.set_xticks(positions)
+                ax.set_xticklabels(labels, rotation=45, ha='right')
+                ax.grid(True, alpha=0.3, linestyle='--', axis='y')
 
             # 显示图例
             if len(datasets) > 1:
                 ax.legend(loc='best', framealpha=0.9)
 
-            # 网格
-            ax.grid(True, alpha=0.3, linestyle='--', axis='y')
-
             return self._figure_to_svg(fig)
 
         except Exception as e:
             logger.error(f"渲染柱状图失败: {e}")
             return None
 
+    def _render_bubble(
+        self,
+        data: Dict[str, Any],
+        props: Dict[str, Any],
+        width: int,
+        height: int,
+        dpi: int
+    ) -> Optional[str]:
+        """渲染气泡图"""
+        try:
+            datasets = data.get('datasets', [])
+            if not datasets:
+                return None
+
+            title = props.get('title')
+            fig, ax = self._create_figure(width, height, dpi, title)
+            colors = self._get_colors(datasets)
+
+            def _safe_radius(raw) -> float:
+                try:
+                    val = float(raw)
+                    return max(val, 0.5)
+                except Exception:
+                    return 1.0
+
+            all_x: list[float] = []
+            all_y: list[float] = []
+            max_r: float = 0.0
+
+            for i, dataset in enumerate(datasets):
+                points = dataset.get('data', [])
+                label = dataset.get('label', f'系列{i+1}')
+                color = colors[i]
+
+                if points and isinstance(points[0], dict):
+                    xs = [p.get('x', 0) for p in points]
+                    ys = [p.get('y', 0) for p in points]
+                    rs = [_safe_radius(p.get('r', 1)) for p in points]
+                else:
+                    xs = list(range(len(points)))
+                    ys = points
+                    rs = [1.0 for _ in points]
+
+                all_x.extend(xs)
+                all_y.extend(ys)
+                if rs:
+                    max_r = max(max_r, max(rs))
+
+                # 适度放大半径，近似Chart.js像素尺寸（动态尺度，避免过大遮挡）
+                size_scale = 8.0 if max_r <= 20 else 6.5
+                sizes = [(r * size_scale) ** 2 for r in rs]
+
+                ax.scatter(
+                    xs,
+                    ys,
+                    s=sizes,
+                    label=label,
+                    color=color,
+                    alpha=0.45,
+                    edgecolors='white',
+                    linewidth=0.6
+                )
+
+            if len(datasets) > 1:
+                ax.legend(loc='best', framealpha=0.9)
+
+            # 适度留白，避免大气泡被裁切
+            if all_x and all_y:
+                x_min, x_max = min(all_x), max(all_x)
+                y_min, y_max = min(all_y), max(all_y)
+                x_span = max(x_max - x_min, 1e-6)
+                y_span = max(y_max - y_min, 1e-6)
+                pad_x = max(x_span * 0.12, max_r * 1.2)
+                pad_y = max(y_span * 0.12, max_r * 1.2)
+                ax.set_xlim(x_min - pad_x, x_max + pad_x)
+                ax.set_ylim(y_min - pad_y, y_max + pad_y)
+                # 额外安全边距
+                ax.margins(x=0.05, y=0.05)
+
+            ax.grid(True, alpha=0.3, linestyle='--')
+            return self._figure_to_svg(fig)
+
+        except Exception as e:
+            logger.error(f"渲染气泡图失败: {e}", exc_info=True)
+            return None
+
     def _render_pie(
         self,
         data: Dict[str, Any],

ReportEngine/renderers/html_renderer.py

@@ -1263,7 +1263,9 @@ class HTMLRenderer:
     def _render_math(self, block: Dict[str, Any]) -> str:
         """渲染数学公式，占位符交给外部MathJax或后处理"""
         latex = self._escape_html(block.get("latex", ""))
-        return f'<div class="math-block">$$ {latex} $$</div>'
+        math_id = self._escape_attr(block.get("mathId", "")) if block.get("mathId") else ""
+        id_attr = f' data-math-id="{math_id}"' if math_id else ""
+        return f'<div class="math-block"{id_attr}>$$ {latex} $$</div>'
 
     def _render_figure(self, block: Dict[str, Any]) -> str:
         """根据新规范默认不渲染外部图片，改为友好提示"""
@@ -2012,7 +2014,9 @@ class HTMLRenderer:
             latex = math_mark.get("value")
             if not isinstance(latex, str) or not latex.strip():
                 latex = text_value
-            return f'<span class="math-inline">\\( {self._escape_html(latex)} \\)</span>'
+            math_id = self._escape_attr(run.get("mathId", "")) if run.get("mathId") else ""
+            id_attr = f' data-math-id="{math_id}"' if math_id else ""
+            return f'<span class="math-inline"{id_attr}>\\( {self._escape_html(latex)} \\)</span>'
         text = self._escape_html(text_value)
         styles: List[str] = []
         prefix: List[str] = []

ReportEngine/renderers/pdf_renderer.py

@@ -535,6 +535,33 @@ class PDFRenderer:
         if block_counter is None:
             block_counter = [0]
 
+        def _extract_inline_math_from_inlines(inlines: list):
+            """从段落内联节点中提取数学公式"""
+            if not isinstance(inlines, list):
+                return
+            for run in inlines:
+                if not isinstance(run, dict):
+                    continue
+                marks = run.get('marks') or []
+                math_mark = next((m for m in marks if m.get('type') == 'math'), None)
+                if not math_mark:
+                    continue
+                latex = (math_mark.get('value') or run.get('text') or '').strip()
+                if not latex:
+                    continue
+                block_counter[0] += 1
+                math_id = f"math-inline-{block_counter[0]}"
+                try:
+                    svg_content = self.math_converter.convert_inline_to_svg(latex)
+                    if svg_content:
+                        svg_map[math_id] = svg_content
+                        run['mathId'] = math_id
+                        logger.debug(f"公式 {math_id} 转换为SVG成功")
+                    else:
+                        logger.warning(f"公式 {math_id} 转换为SVG失败: {latex[:50]}...")
+                except Exception as exc:
+                    logger.error(f"转换内联公式 {latex[:50]}... 时出错: {exc}")
+
         for block in blocks:
             if not isinstance(block, dict):
                 continue
@@ -547,7 +574,6 @@ class PDFRenderer:
                 if latex:
                     block_counter[0] += 1
                     math_id = f"math-block-{block_counter[0]}"
-
                     try:
                         svg_content = self.math_converter.convert_display_to_svg(latex)
                         if svg_content:
@@ -559,6 +585,11 @@ class PDFRenderer:
                             logger.warning(f"公式 {math_id} 转换为SVG失败: {latex[:50]}...")
                     except Exception as e:
                         logger.error(f"转换公式 {latex[:50]}... 时出错: {e}")
+            else:
+                # 提取段落、表格等内部的内联公式
+                inlines = block.get('inlines')
+                if inlines:
+                    _extract_inline_math_from_inlines(inlines)
 
             # 递归处理嵌套的blocks
             nested_blocks = block.get('blocks')
@@ -614,9 +645,8 @@ class PDFRenderer:
             # 创建SVG容器HTML
             svg_html = f'<div class="chart-svg-container">{svg_content}</div>'
 
-            # 查找包含此widgetId的配置脚本
-            # 格式: <script type="application/json" id="chart-config-N">{"widgetId":"widget_id",...}</script>
-            config_pattern = rf'<script[^>]+id="([^"]+)"[^>]*>\s*\{{[^}}]*"widgetId"\s*:\s*"{re.escape(widget_id)}"[^}}]*\}}'
+            # 查找包含此widgetId的配置脚本（限制在同一个</script>内，避免跨标签误配）
+            config_pattern = rf'<script[^>]+id="([^"]+)"[^>]*>(?:(?!</script>).)*?"widgetId"\s*:\s*"{re.escape(widget_id)}"(?:(?!</script>).)*?</script>'
             match = re.search(config_pattern, html, re.DOTALL)
 
             if match:
@@ -627,8 +657,11 @@ class PDFRenderer:
                 canvas_pattern = rf'<canvas[^>]+data-config-id="{re.escape(config_id)}"[^>]*></canvas>'
 
                 # 【修复】替换canvas为SVG，使用lambda避免反斜杠转义问题
-                html = re.sub(canvas_pattern, lambda m: svg_html, html)
-                logger.debug(f"已替换图表 {widget_id} 的canvas为SVG")
+                html, replaced = re.subn(canvas_pattern, lambda m: svg_html, html, count=1)
+                if replaced:
+                    logger.debug(f"已替换图表 {widget_id} 的canvas为SVG")
+                else:
+                    logger.warning(f"未找到图表 {widget_id} 的canvas进行替换")
 
                 # 将对应fallback标记为隐藏，避免PDF中出现重复表格
                 fallback_pattern = rf'<div class="chart-fallback"([^>]*data-widget-id="{re.escape(widget_id)}"[^>]*)>'
@@ -661,7 +694,7 @@ class PDFRenderer:
                 f'</div>'
             )
 
-            config_pattern = rf'<script[^>]+id="([^"]+)"[^>]*>\s*\{{[^}}]*"widgetId"\s*:\s*"{re.escape(widget_id)}"[^}}]*\}}'
+            config_pattern = rf'<script[^>]+id="([^"]+)"[^>]*>(?:(?!</script>).)*?"widgetId"\s*:\s*"{re.escape(widget_id)}"(?:(?!</script>).)*?</script>'
             match = re.search(config_pattern, html, re.DOTALL)
             if not match:
                 logger.debug(f"未找到词云 {widget_id} 的配置脚本，跳过注入")
@@ -670,8 +703,11 @@ class PDFRenderer:
             config_id = match.group(1)
             canvas_pattern = rf'<canvas[^>]+data-config-id="{re.escape(config_id)}"[^>]*></canvas>'
 
-            html = re.sub(canvas_pattern, lambda m: img_html, html)
-            logger.debug(f"已替换词云 {widget_id} 的canvas为PNG图片")
+            html, replaced = re.subn(canvas_pattern, lambda m: img_html, html, count=1)
+            if replaced:
+                logger.debug(f"已替换词云 {widget_id} 的canvas为PNG图片")
+            else:
+                logger.warning(f"未找到词云 {widget_id} 的canvas进行替换")
 
             fallback_pattern = rf'<div class="chart-fallback"([^>]*data-widget-id="{re.escape(widget_id)}"[^>]*)>'
 
@@ -701,32 +737,40 @@ class PDFRenderer:
 
         import re
 
-        # 为每个math block查找对应的div并替换为SVG
+        # 优先替换内联公式，再替换块级公式，保持顺序一致
         for math_id, svg_content in svg_map.items():
             # 清理SVG内容（移除XML声明，因为SVG将嵌入HTML）
             svg_content = re.sub(r'<\?xml[^>]+\?>', '', svg_content)
             svg_content = re.sub(r'<!DOCTYPE[^>]+>', '', svg_content)
             svg_content = svg_content.strip()
 
-            # 创建SVG容器HTML
-            svg_html = f'<div class="math-svg-container">{svg_content}</div>'
+            svg_block_html = f'<div class="math-svg-container">{svg_content}</div>'
+            svg_inline_html = f'<span class="math-svg-inline">{svg_content}</span>'
 
-            # 查找对应的math-block div
-            # 格式: <div class="math-block">$$ latex $$</div>
-            # 我们需要找到包含特定LaTeX内容的div
-            # 但由于我们在转换时已经给block添加了mathId，我们可以用另一种方式
+            replaced = False
+            # 优先按 data-math-id 精确替换
+            inline_pattern = rf'<span class="math-inline"[^>]*data-math-id="{re.escape(math_id)}"[^>]*>.*?</span>'
+            if re.search(inline_pattern, html, re.DOTALL):
+                html = re.sub(inline_pattern, lambda m: svg_inline_html, html, count=1)
+                replaced = True
+            else:
+                block_pattern = rf'<div class="math-block"[^>]*data-math-id="{re.escape(math_id)}"[^>]*>.*?</div>'
+                if re.search(block_pattern, html, re.DOTALL):
+                    html = re.sub(block_pattern, lambda m: svg_block_html, html, count=1)
+                    replaced = True
 
-            # 方案：在HTML渲染器中为math-block添加data-math-id属性
-            # 但这需要修改HTMLRenderer，暂时我们使用更简单的方法：
-            # 按顺序替换所有math-block
+            # 如果没有找到特定ID，按出现顺序兜底替换
+            if not replaced:
+                html, sub_inline = re.subn(r'<span class="math-inline">[^<]*</span>', lambda m: svg_inline_html, html, count=1)
+                if sub_inline:
+                    replaced = True
+                else:
+                    html, sub_block = re.subn(r'<div class="math-block">\$\$[^$]*\$\$</div>', lambda m: svg_block_html, html, count=1)
+                    if sub_block:
+                        replaced = True
 
-            # 暂时使用简单的替换方案
-            # 找到第一个math-block div并替换
-            math_block_pattern = r'<div class="math-block">\$\$[^$]*\$\$</div>'
-            # 【修复】使用lambda函数避免re.sub将SVG内容中的反斜杠解释为转义序列
-            # lambda函数中的返回值会被当作字面字符串，不会进行转义处理
-            html = re.sub(math_block_pattern, lambda m: svg_html, html, count=1)
-            logger.debug(f"已替换公式 {math_id} 为SVG")
+            if replaced:
+                logger.debug(f"已替换公式 {math_id} 为SVG")
 
         return html
 
@@ -787,10 +831,8 @@ class PDFRenderer:
         logger.info("开始转换数学公式为SVG矢量图形...")
         math_svg_map = self._convert_math_to_svg(preprocessed_ir)
 
-        # 使用HTML渲染器生成基础HTML（使用原始IR，因为HTMLRenderer会自己修复）
-        # 注意：这里仍使用原始document_ir，因为HTMLRenderer内部会进行相同的修复
-        # 这确保了HTML和SVG使用相同的修复逻辑
-        html = self.html_renderer.render(document_ir)
+        # 使用HTML渲染器生成基础HTML（使用预处理后的IR，以便复用mathId等标记）
+        html = self.html_renderer.render(preprocessed_ir)
 
         # 注入图表SVG
         if svg_map: