From 2f4f3817adaa9722dabe8448105b83d6ce566c8a Mon Sep 17 00:00:00 2001
From: Yasutake Yohei <61961825+yasutakeyohei@users.noreply.github.com>
Date: Mon, 19 Oct 2026 10:23:59 +0900
Subject: parks: 表をPNG画像で保存できるボタンを追加
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 package-lock.json               |   7 ++
 package.json                    |   1 +
 src/components/ParksTable.astro | 222 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 230 insertions(+)

diff --git a/package-lock.json b/package-lock.json
index 3962026..07802f6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,6 +15,7 @@
         "@fontsource/noto-sans-jp": "^5.2.9",
         "@resvg/resvg-js": "^2.6.2",
         "astro": "^7.3.5",
+        "html-to-image": "^1.11.13",
         "leaflet": "^1.9.4",
         "mammoth": "^1.12.0",
         "playwright": "^1.60.0",
@@ -8009,6 +8010,12 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/html-to-image": {
+      "version": "1.11.13",
+      "resolved": "https://registry.npmjs.org/html-to-image/-/html-to-image-1.11.13.tgz",
+      "integrity": "sha512-cuOPoI7WApyhBElTTb9oqsawRvZ0rHhaHwghRLlTuffoD1B2aDemlCruLeZrUIIdvG7gs9xeELEPm6PhuASqrg==",
+      "license": "MIT"
+    },
     "node_modules/html-void-elements": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/html-void-elements/-/html-void-elements-3.0.0.tgz",
diff --git a/package.json b/package.json
index 4cd1a43..3d29c41 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "@fontsource/noto-sans-jp": "^5.2.9",
     "@resvg/resvg-js": "^2.6.2",
     "astro": "^7.3.5",
+    "html-to-image": "^1.11.13",
     "leaflet": "^1.9.4",
     "mammoth": "^1.12.0",
     "playwright": "^1.60.0",
diff --git a/src/components/ParksTable.astro b/src/components/ParksTable.astro
index 6f8fdbd..e5def82 100644
--- a/src/components/ParksTable.astro
+++ b/src/components/ParksTable.astro
@@ -204,9 +204,11 @@ const total = parks.length;
       <label><input type="checkbox" data-fac-filter value="ball" />ボール遊び</label>
       <label><input type="checkbox" data-fac-filter value="cm" />指定管理</label>
     </fieldset>
+    <button type="button" class="parks-save" data-parks-save-image>画像で保存</button>
     <span class="parks-count" data-parks-count aria-live="polite">{total}件</span>
   </div>
   <p class="parks-hint">設備の情報は、市の資料などに基づきます。設備で絞ると、この情報がある公園だけが対象になります。</p>
+  <p class="parks-save-status" data-parks-save-status aria-live="polite"></p>
   <p class="parks-none" data-parks-none hidden>条件に合う公園が見つかりませんでした。</p>
 
   <div class="parks-scroll">
@@ -345,6 +347,85 @@ const total = parks.length;
     font-size: 0.9rem;
     opacity: 0.75;
   }
+  .parks-save {
+    padding: 0.35rem 0.7rem;
+    border: 1px solid var(--sl-color-hairline, #ccc);
+    border-radius: 0.35rem;
+    background: var(--sl-color-bg, #fff);
+    color: var(--sl-color-text, inherit);
+    font: inherit;
+    font-size: 0.85rem;
+    cursor: pointer;
+  }
+  .parks-save:hover {
+    border-color: var(--sl-color-text-accent, #4c8);
+  }
+  .parks-save:disabled {
+    opacity: 0.6;
+    cursor: wait;
+  }
+  .parks-save-status {
+    margin: 0 0 0.6rem;
+    font-size: 0.8rem;
+    opacity: 0.8;
+  }
+  .parks-save-status:empty {
+    display: none;
+  }
+  /* 画像保存用のオフスクリーン領域。サイトの表スタイルをそのまま使う。 */
+  .parks-capture {
+    position: fixed;
+    left: 0;
+    top: 0;
+    z-index: -1;
+    pointer-events: none;
+    width: max-content;
+    padding: 24px 28px;
+    background: #fff;
+    color: #1a1a1a;
+    color-scheme: light;
+    --sl-color-text: #1a1a1a;
+    --sl-color-bg: #ffffff;
+    --sl-color-hairline: #dddddd;
+    --sl-color-gray-4: #888888;
+    --sl-color-gray-6: #eef1f3;
+    --sl-color-white: #1a1a1a;
+    --sl-color-text-accent: #0b7a4b;
+  }
+  .parks-capture-head {
+    display: flex;
+    align-items: baseline;
+    gap: 0.8rem;
+    margin-bottom: 0.2rem;
+  }
+  .parks-capture-head strong {
+    font-size: 1.35rem;
+  }
+  .parks-capture-head span {
+    font-size: 0.9rem;
+    opacity: 0.75;
+  }
+  .parks-capture-meta {
+    margin-bottom: 0.7rem;
+    font-size: 0.8rem;
+    opacity: 0.75;
+  }
+  .parks-capture table {
+    width: max-content;
+  }
+  .parks-capture thead th {
+    position: static;
+    background: #eef1f3;
+    color: #1a1a1a;
+  }
+  .parks-capture tbody td {
+    color: #1a1a1a;
+  }
+  .parks-capture-foot {
+    margin-top: 0.7rem;
+    font-size: 0.72rem;
+    opacity: 0.65;
+  }
   .parks-hint,
   .parks-none {
     margin: 0 0 0.6rem;
@@ -593,6 +674,8 @@ const total = parks.length;
 </style>
 
 <script>
+  import { toPng } from "html-to-image";
+
   document.querySelectorAll("[data-parks]").forEach((root) => {
     const select = root.querySelector<HTMLSelectElement>("[data-parks-town]");
     const search = root.querySelector<HTMLInputElement>("[data-parks-search]");
@@ -613,6 +696,145 @@ const total = parks.length;
 
     const allRows = () => Array.from(tbody.querySelectorAll<HTMLTableRowElement>("tr"));
     const total = allRows().length;
+    const saveButton = root.querySelector<HTMLButtonElement>("[data-parks-save-image]");
+    const saveStatus = root.querySelector<HTMLElement>("[data-parks-save-status]");
+    const MAX_IMAGE_ROWS = 30;
+    // AstroのスコープCSSを動的生成要素にも当てる（ダークテーマの色を上書きするため）。
+    const scopeClass = Array.from(root.classList).find((cls) => cls.startsWith("astro-"));
+    const withScope = <T extends HTMLElement>(el: T): T => {
+      if (scopeClass) el.classList.add(scopeClass);
+      return el;
+    };
+
+    const saveTableImage = async () => {
+      if (!saveButton) return;
+      const visible = allRows().filter((row) => !row.classList.contains("is-hidden"));
+      if (!visible.length) {
+        if (saveStatus) saveStatus.textContent = "表示中の公園がありません。";
+        return;
+      }
+      const table = root.querySelector("table");
+      if (!table) return;
+
+      saveButton.disabled = true;
+      if (saveStatus) saveStatus.textContent = "画像を作成中…";
+      let wrap: HTMLDivElement | null = null;
+      try {
+        const limited = visible.slice(0, MAX_IMAGE_ROWS);
+        const clone = table.cloneNode(true) as HTMLTableElement;
+        const cloneBody = clone.querySelector("tbody");
+        if (cloneBody) {
+          cloneBody.innerHTML = "";
+          limited.forEach((row) => cloneBody.appendChild(row.cloneNode(true)));
+        }
+
+        // ボタン・リンクは画像内では文字だけにする。
+        clone.querySelectorAll("button").forEach((btn) => {
+          const span = document.createElement("span");
+          span.textContent = (btn.textContent || "").trim();
+          btn.replaceWith(span);
+        });
+        clone.querySelectorAll("a").forEach((link) => {
+          const span = document.createElement("span");
+          span.textContent = (link.textContent || "").trim();
+          link.replaceWith(span);
+        });
+
+        // 設備アイコンはCSSの擬似要素なので、画像では絵文字を直接入れる。
+        const icons: Record<string, string> = {
+          toilet: "🚻",
+          water: "🚰",
+          toy: "🎠",
+          ball: "⚽",
+          cm: "🏛",
+          pergola: "🌿",
+          azumaya: "🛖",
+        };
+        clone.querySelectorAll<HTMLElement>(".fac-badge").forEach((badge) => {
+          for (const [kind, icon] of Object.entries(icons)) {
+            if (badge.classList.contains(`fac-${kind}`)) {
+              badge.textContent = icon;
+              break;
+            }
+          }
+        });
+
+        wrap = document.createElement("div");
+        wrap.className = "parks parks-capture";
+        withScope(wrap);
+        const head = document.createElement("div");
+        head.className = "parks-capture-head";
+        withScope(head);
+        const title = document.createElement("strong");
+        title.textContent = "小平市の公園一覧";
+        withScope(title);
+        const countLabel = document.createElement("span");
+        countLabel.textContent = `${limited.length}件${
+          visible.length > MAX_IMAGE_ROWS
+            ? `（表示中${visible.length}件の先頭${MAX_IMAGE_ROWS}件）`
+            : ""
+        }`;
+        withScope(countLabel);
+        head.append(title, countLabel);
+
+        const meta = document.createElement("div");
+        meta.className = "parks-capture-meta";
+        withScope(meta);
+        const parts: string[] = [];
+        if (select?.value) parts.push(`町名: ${select.value}`);
+        if (search?.value.trim()) parts.push(`キーワード: ${search.value.trim()}`);
+        const facLabels = checks
+          .filter((c) => c.checked)
+          .map((c) => (c.parentElement?.textContent || "").trim())
+          .filter(Boolean);
+        if (facLabels.length) parts.push(`設備: ${facLabels.join("・")}`);
+        if (sortKey) {
+          parts.push(
+            `並べ替え: ${sortKey === "area" ? "面積" : "公園名"} ${
+              sortDir === 1 ? "昇順" : "降順"
+            }`,
+          );
+        }
+        meta.textContent = parts.length ? parts.join(" / ") : "すべての公園";
+
+        const foot = document.createElement("div");
+        foot.className = "parks-capture-foot";
+        withScope(foot);
+        foot.textContent = `yasutakeyohei.com/kodaira-data/parks/ ・ ${new Date().toLocaleDateString(
+          "ja-JP",
+        )}時点`;
+
+        wrap.append(head, meta, clone, foot);
+        document.body.appendChild(wrap);
+
+        const dataUrl = await toPng(wrap, {
+          pixelRatio: 2,
+          backgroundColor: "#ffffff",
+          cacheBust: true,
+        });
+
+        const link = document.createElement("a");
+        link.download = `kodaira-parks-${new Date().toISOString().slice(0, 10)}.png`;
+        link.href = dataUrl;
+        link.click();
+        if (saveStatus)
+          saveStatus.textContent =
+            visible.length > MAX_IMAGE_ROWS
+              ? `画像を保存しました（表示中${visible.length}件の先頭${MAX_IMAGE_ROWS}件）。`
+              : "画像を保存しました。";
+      } catch (error) {
+        console.error(error);
+        if (saveStatus) saveStatus.textContent = "画像の作成に失敗しました。";
+      } finally {
+        wrap?.remove();
+        saveButton.disabled = false;
+        window.setTimeout(() => {
+          if (saveStatus) saveStatus.textContent = "";
+        }, 5000);
+      }
+    };
+
+    saveButton?.addEventListener("click", saveTableImage);
 
     let sortKey: string | null = null;
     let sortDir = 1;
-- 
cgit v1.3.1