release: 发布 v0.5.1

新增能力：内置 4 套红头、3 套正式文档和 3 套标书主题，支持主题推荐页边距、页面装饰、页眉页脚和页码；增加结构化公文、项目报告及标书 Front Matter，内置 Fandol 中文字体、两份教程和 14 份主题示例。桌面工作流：重组更多菜单，增加新建、保存、另存为快捷键和未保存确认；另存为后跟随新路径，主题示例自动切换主题，Desktop 发行包完整携带教程、示例与字体。问题修复：修正红头标题居中与正式文档字体；围栏代码按正文宽度自动换行，长内容安全断行，至少两行即可在当前页分页，并统一保留 8px 左侧内容留白；Docker Web 镜像正确打包 samples。兼容与部署：未声明主题推荐设置时继续使用 16mm 默认页边距；Web 隐藏不适用的另存为。正式镜像 yixiong/md-to-pdf:v0.5.1 内容 ID 为 sha256:72f519a69bfd6cb2f6df30c2be938e58ceb6f20e4748a32551874de3d436b276，Compose 健康运行。验证结果：最终修复前 65 个测试文件、286 项测试通过，最终代码块与主题定向测试 27 项通过；全项目类型检查、生产构建和 git diff --check 通过。容器检出 14 套主题、17 份 Markdown，代码块回归 PDF 为 2 页且无越界。NSIS SHA-256 为 676CCE73D782B0B15AC6BC68F253CFBC4740383583E4DAA98F746EDF9999C5CC，ZIP SHA-256 为 82BF6ADF1200604F145CC86FA3ED193955CF6741EBEE3DF8953483515CFF621F。
2026-07-29 16:58:17 +08:00
parent 58087d0c7e
commit 83e6559c2c
111 changed files with 8274 additions and 173 deletions
@@ -0,0 +1,134 @@
+const PREPARED_ATTRIBUTE = "data-code-pagination-prepared";
+const CHUNK_CLASS = "md-code-pagination-chunk";
+const CHUNK_POSITION_ATTRIBUTE = "data-code-pagination-position";
+const LINE_GROUP_CLASS = "md-code-line-group";
+const LINE_CLASS = "md-code-line";
+
+function splitNodeIntoLines(node: Node): Node[][] {
+  const documentRef = node.ownerDocument;
+  if (!documentRef) {
+    throw new Error("代码块分页节点缺少 ownerDocument");
+  }
+  if (node.nodeType === node.TEXT_NODE) {
+    return (node.textContent ?? "").split("\n").map((text) => [
+      documentRef.createTextNode(text)
+    ]);
+  }
+
+  if (node.nodeType !== node.ELEMENT_NODE) {
+    return [[node.cloneNode(true)]];
+  }
+
+  const lineChildren = splitNodesIntoLines(
+    Array.from(node.childNodes)
+  );
+  return lineChildren.map((children) => {
+    const clone = node.cloneNode(false) as Element;
+    clone.append(...children);
+    return [clone];
+  });
+}
+
+function splitNodesIntoLines(nodes: Node[]): Node[][] {
+  const lines: Node[][] = [[]];
+
+  for (const node of nodes) {
+    const nodeLines = splitNodeIntoLines(node);
+    lines.at(-1)?.push(...(nodeLines[0] ?? []));
+    for (const line of nodeLines.slice(1)) {
+      lines.push([...line]);
+    }
+  }
+
+  return lines;
+}
+
+function lineHasContent(nodes: Node[]) {
+  return nodes.some((node) => (node.textContent ?? "").length > 0);
+}
+
+function createLineGroups(
+  documentRef: Document,
+  lines: Node[][]
+) {
+  const groups: HTMLElement[] = [];
+  let lineIndex = 0;
+
+  while (lineIndex < lines.length) {
+    const remaining = lines.length - lineIndex;
+    const groupSize =
+      remaining === 1 ? 1 : remaining === 3 ? 3 : 2;
+    const group = documentRef.createElement("span");
+    group.className = LINE_GROUP_CLASS;
+
+    for (
+      let offset = 0;
+      offset < groupSize && lineIndex < lines.length;
+      offset += 1, lineIndex += 1
+    ) {
+      const line = documentRef.createElement("span");
+      line.className = LINE_CLASS;
+      line.append(...(lines[lineIndex] ?? []));
+      group.append(line);
+    }
+
+    groups.push(group);
+  }
+
+  return groups;
+}
+
+export function prepareCodeBlockPagination(root: ParentNode) {
+  const codeBlocks = Array.from(
+    root.querySelectorAll<HTMLElement>(
+      `pre.md-fences:not([${PREPARED_ATTRIBUTE}])`
+    )
+  );
+
+  for (const codeBlock of codeBlocks) {
+    const code = codeBlock.querySelector<HTMLElement>(
+      ":scope > code"
+    );
+    if (!code) {
+      continue;
+    }
+
+    const sourceEndsWithNewline =
+      code.textContent?.endsWith("\n") ?? false;
+    const lines = splitNodesIntoLines(Array.from(code.childNodes));
+    if (
+      sourceEndsWithNewline &&
+      lines.length > 1 &&
+      !lineHasContent(lines.at(-1) ?? [])
+    ) {
+      lines.pop();
+    }
+
+    const groups = createLineGroups(code.ownerDocument, lines);
+    const chunks = groups.map((group, index) => {
+      const chunk = code.ownerDocument.createElement("div");
+      for (const attribute of Array.from(codeBlock.attributes)) {
+        chunk.setAttribute(attribute.name, attribute.value);
+      }
+      chunk.classList.add(CHUNK_CLASS);
+      chunk.setAttribute(PREPARED_ATTRIBUTE, "true");
+      chunk.setAttribute(
+        CHUNK_POSITION_ATTRIBUTE,
+        groups.length === 1
+          ? "only"
+          : index === 0
+            ? "first"
+            : index === groups.length - 1
+              ? "last"
+              : "middle"
+      );
+
+      const chunkCode = code.cloneNode(false) as HTMLElement;
+      chunkCode.append(group);
+      chunk.append(chunkCode);
+      return chunk;
+    });
+
+    codeBlock.replaceWith(...chunks);
+  }
+}