포트폴리오 확대 기능 추가

src/main/frontend/portfolio-public.js

@@ -9,7 +9,11 @@ import "ag-grid-community/styles/ag-theme-quartz.css";
 ModuleRegistry.registerModules([AllCommunityModule]);
 
 const DEFAULT_SELECTOR = "[data-portfolio-list-panel]";
+const DETAIL_CONTENT_SELECTOR = ".portfolio-content";
 const DEFAULT_PAGE_SIZE = 5;
+const MIN_ZOOM_SCALE = 1;
+const MAX_ZOOM_SCALE = 6;
+const WHEEL_ZOOM_STEP = 0.0015;
 
 function toDate(value) {
   if (!value) {
@@ -318,8 +322,287 @@ function initPortfolioListPanel(selector = DEFAULT_SELECTOR) {
   };
 }
 
+function getTouchDistance(firstPointer, secondPointer) {
+  return Math.hypot(
+    firstPointer.clientX - secondPointer.clientX,
+    firstPointer.clientY - secondPointer.clientY,
+  );
+}
+
+function getTouchCenter(firstPointer, secondPointer) {
+  return {
+    x: (firstPointer.clientX + secondPointer.clientX) / 2,
+    y: (firstPointer.clientY + secondPointer.clientY) / 2,
+  };
+}
+
+function clamp(value, min, max) {
+  return Math.min(Math.max(value, min), max);
+}
+
+function initPortfolioImageZoom(selector = DETAIL_CONTENT_SELECTOR) {
+  const content = document.querySelector(selector);
+  if (!content) {
+    return null;
+  }
+
+  const images = Array.from(content.querySelectorAll("img")).filter(
+    (image) => image.getAttribute("src"),
+  );
+  if (!images.length) {
+    return null;
+  }
+
+  const overlay = document.createElement("div");
+  overlay.className = "portfolio-image-zoom";
+  overlay.hidden = true;
+  overlay.setAttribute("aria-hidden", "true");
+
+  const stage = document.createElement("div");
+  stage.className = "portfolio-image-zoom-stage";
+
+  const zoomImage = document.createElement("img");
+  zoomImage.className = "portfolio-image-zoom-img";
+  zoomImage.alt = "";
+  zoomImage.draggable = false;
+
+  const closeButton = document.createElement("button");
+  closeButton.type = "button";
+  closeButton.className = "portfolio-image-zoom-close";
+  closeButton.setAttribute("aria-label", "이미지 확대 닫기");
+  closeButton.textContent = "X";
+
+  stage.appendChild(zoomImage);
+  overlay.append(stage, closeButton);
+  document.body.appendChild(overlay);
+
+  const pointers = new Map();
+  let lastFocusedElement = null;
+  let scale = MIN_ZOOM_SCALE;
+  let translateX = 0;
+  let translateY = 0;
+  let startDistance = 0;
+  let startScale = MIN_ZOOM_SCALE;
+  let startCenter = null;
+  let startTranslateX = 0;
+  let startTranslateY = 0;
+  let lastPanPointer = null;
+
+  const applyTransform = () => {
+    zoomImage.style.transform = `translate3d(${translateX}px, ${translateY}px, 0) scale(${scale})`;
+    overlay.classList.toggle("is-zoomed", scale > MIN_ZOOM_SCALE);
+  };
+
+  const resetTransform = () => {
+    scale = MIN_ZOOM_SCALE;
+    translateX = 0;
+    translateY = 0;
+    startDistance = 0;
+    startScale = MIN_ZOOM_SCALE;
+    startCenter = null;
+    startTranslateX = 0;
+    startTranslateY = 0;
+    lastPanPointer = null;
+    pointers.clear();
+    applyTransform();
+  };
+
+  const closeZoom = () => {
+    overlay.hidden = true;
+    overlay.setAttribute("aria-hidden", "true");
+    document.body.classList.remove("portfolio-image-zoom-open");
+    resetTransform();
+
+    if (lastFocusedElement && typeof lastFocusedElement.focus === "function") {
+      lastFocusedElement.focus({ preventScroll: true });
+    }
+  };
+
+  const openZoom = (image) => {
+    lastFocusedElement = document.activeElement;
+    zoomImage.src = image.currentSrc || image.src;
+    zoomImage.alt = image.alt || "";
+    overlay.hidden = false;
+    overlay.setAttribute("aria-hidden", "false");
+    document.body.classList.add("portfolio-image-zoom-open");
+    resetTransform();
+    closeButton.focus({ preventScroll: true });
+  };
+
+  const updateGesture = () => {
+    const activePointers = Array.from(pointers.values());
+
+    if (activePointers.length >= 2) {
+      const [firstPointer, secondPointer] = activePointers;
+      const distance = getTouchDistance(firstPointer, secondPointer);
+      const center = getTouchCenter(firstPointer, secondPointer);
+
+      if (!startDistance || !startCenter) {
+        startDistance = distance;
+        startScale = scale;
+        startCenter = center;
+        startTranslateX = translateX;
+        startTranslateY = translateY;
+      }
+
+      scale = clamp(
+        startScale * (distance / startDistance),
+        MIN_ZOOM_SCALE,
+        MAX_ZOOM_SCALE,
+      );
+
+      if (scale <= MIN_ZOOM_SCALE) {
+        translateX = 0;
+        translateY = 0;
+      } else {
+        translateX = startTranslateX + center.x - startCenter.x;
+        translateY = startTranslateY + center.y - startCenter.y;
+      }
+
+      lastPanPointer = null;
+      applyTransform();
+      return;
+    }
+
+    startDistance = 0;
+    startCenter = null;
+
+    if (activePointers.length === 1 && scale > MIN_ZOOM_SCALE) {
+      const [pointer] = activePointers;
+
+      if (lastPanPointer) {
+        translateX += pointer.clientX - lastPanPointer.clientX;
+        translateY += pointer.clientY - lastPanPointer.clientY;
+      }
+
+      lastPanPointer = { clientX: pointer.clientX, clientY: pointer.clientY };
+      applyTransform();
+      return;
+    }
+
+    lastPanPointer = null;
+  };
+
+  const zoomAtPoint = (nextScale, clientX, clientY) => {
+    const previousScale = scale;
+    const rect = zoomImage.getBoundingClientRect();
+    const centerX = rect.left + rect.width / 2;
+    const centerY = rect.top + rect.height / 2;
+
+    scale = clamp(nextScale, MIN_ZOOM_SCALE, MAX_ZOOM_SCALE);
+
+    if (scale <= MIN_ZOOM_SCALE) {
+      translateX = 0;
+      translateY = 0;
+      applyTransform();
+      return;
+    }
+
+    const scaleRatio = scale / previousScale;
+    translateX += (1 - scaleRatio) * (clientX - centerX);
+    translateY += (1 - scaleRatio) * (clientY - centerY);
+    applyTransform();
+  };
+
+  images.forEach((image) => {
+    image.classList.add("portfolio-zoomable-image");
+    image.setAttribute("tabindex", "0");
+    image.setAttribute("role", "button");
+    image.setAttribute("aria-label", "이미지 원본 확대 보기");
+
+    image.addEventListener("click", (event) => {
+      event.preventDefault();
+      openZoom(image);
+    });
+
+    image.addEventListener("keydown", (event) => {
+      if (event.key !== "Enter" && event.key !== " ") {
+        return;
+      }
+
+      event.preventDefault();
+      openZoom(image);
+    });
+  });
+
+  overlay.addEventListener("click", (event) => {
+    if (event.target === overlay || event.target === stage) {
+      closeZoom();
+    }
+  });
+
+  closeButton.addEventListener("click", closeZoom);
+
+  overlay.addEventListener("pointerdown", (event) => {
+    if (event.target !== zoomImage && event.target !== stage) {
+      return;
+    }
+
+    if (event.pointerType === "mouse" && event.button !== 0) {
+      return;
+    }
+
+    pointers.set(event.pointerId, event);
+    overlay.setPointerCapture?.(event.pointerId);
+    updateGesture();
+  });
+
+  overlay.addEventListener("pointermove", (event) => {
+    if (!pointers.has(event.pointerId)) {
+      return;
+    }
+
+    pointers.set(event.pointerId, event);
+    updateGesture();
+  });
+
+  const releasePointer = (event) => {
+    pointers.delete(event.pointerId);
+    overlay.releasePointerCapture?.(event.pointerId);
+    startDistance = 0;
+    startCenter = null;
+    lastPanPointer = null;
+  };
+
+  overlay.addEventListener("pointerup", releasePointer);
+  overlay.addEventListener("pointercancel", releasePointer);
+
+  overlay.addEventListener(
+    "wheel",
+    (event) => {
+      if (overlay.hidden) {
+        return;
+      }
+
+      event.preventDefault();
+      const nextScale = scale * (1 - event.deltaY * WHEEL_ZOOM_STEP);
+      zoomAtPoint(nextScale, event.clientX, event.clientY);
+    },
+    { passive: false },
+  );
+
+  zoomImage.addEventListener("dblclick", (event) => {
+    event.preventDefault();
+    zoomAtPoint(scale > MIN_ZOOM_SCALE ? MIN_ZOOM_SCALE : 2.5, event.clientX, event.clientY);
+  });
+
+  document.addEventListener("keydown", (event) => {
+    if (overlay.hidden || event.key !== "Escape") {
+      return;
+    }
+
+    closeZoom();
+  });
+
+  return {
+    open: openZoom,
+    close: closeZoom,
+  };
+}
+
 document.addEventListener("DOMContentLoaded", () => {
   initPortfolioListPanel();
+  initPortfolioImageZoom();
 });
 
-export { initPortfolioListPanel };
+export { initPortfolioImageZoom, initPortfolioListPanel };

src/main/resources/static/resources/kr/iotdoor/cmty/portfolio/portfolio-post-list.css

@@ -342,3 +342,98 @@
         height: 265px;
     }
 }
+
+.portfolio-zoomable-image {
+    cursor: zoom-in;
+}
+
+.portfolio-zoomable-image:focus-visible {
+    outline: 3px solid rgba(31, 90, 160, 0.35);
+    outline-offset: 4px;
+}
+
+.portfolio-image-zoom-open {
+    overflow: hidden;
+}
+
+.portfolio-image-zoom[hidden] {
+    display: none;
+}
+
+.portfolio-image-zoom {
+    position: fixed;
+    z-index: 1080;
+    inset: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background: rgba(0, 0, 0, 0.88);
+    padding: 72px 24px 32px;
+}
+
+.portfolio-image-zoom-stage {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 100%;
+    height: 100%;
+    overflow: hidden;
+    touch-action: none;
+}
+
+.portfolio-image-zoom-img {
+    display: block;
+    max-width: 100%;
+    max-height: 100%;
+    object-fit: contain;
+    cursor: grab;
+    user-select: none;
+    will-change: transform;
+    transition: transform 0.08s ease-out;
+    transform-origin: center center;
+}
+
+.portfolio-image-zoom.is-zoomed .portfolio-image-zoom-img {
+    cursor: move;
+    transition: none;
+}
+
+.portfolio-image-zoom-close {
+    position: fixed;
+    top: 22px;
+    right: 22px;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 44px;
+    height: 44px;
+    border: 1px solid rgba(255, 255, 255, 0.32);
+    border-radius: 50%;
+    background: rgba(0, 0, 0, 0.42);
+    color: #ffffff;
+    font-family: Arial, sans-serif;
+    font-size: 20px;
+    font-weight: 600;
+    line-height: 1;
+    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
+}
+
+.portfolio-image-zoom-close:hover,
+.portfolio-image-zoom-close:focus-visible {
+    border-color: rgba(255, 255, 255, 0.72);
+    background: rgba(255, 255, 255, 0.16);
+    outline: 0;
+}
+
+@media (max-width: 575.98px) {
+    .portfolio-image-zoom {
+        padding: 64px 12px 20px;
+    }
+
+    .portfolio-image-zoom-close {
+        top: 14px;
+        right: 14px;
+        width: 42px;
+        height: 42px;
+    }
+}

src/main/resources/templates/kr/iotdoor/cmty/portfolio/detail.html

@@ -6,8 +6,8 @@
       layout:decorate="~{kr/iotdoor/comn/site/layout/cmmnSiteLayout.html}">
 
 <th:block layout:fragment="pageStyles">
-    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.css?v=20260421}">
+    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.css?v=20260507}">
-    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-post-list.css?v=20260421}">
+    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-post-list.css?v=20260507}">
 </th:block>
 
 <th:block layout:fragment="content">
@@ -72,6 +72,6 @@
 </th:block>
 
 <th:block layout:fragment="script">
-    <script th:src="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.js?v=20260421}"></script>
+    <script th:src="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.js?v=20260507}"></script>
 </th:block>
 </html>

src/main/resources/templates/kr/iotdoor/cmty/portfolio/portfolio.html

@@ -6,8 +6,8 @@
       layout:decorate="~{kr/iotdoor/comn/site/layout/cmmnSiteLayout.html}">
 
 <th:block layout:fragment="pageStyles">
-    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.css?v=20260421}">
+    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.css?v=20260507}">
-    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-post-list.css?v=20260421}">
+    <link rel="stylesheet" th:href="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-post-list.css?v=20260507}">
 </th:block>
 
 <th:block layout:fragment="content">
@@ -91,6 +91,6 @@
 </th:block>
 
 <th:block layout:fragment="script">
-    <script th:src="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.js?v=20260421}"></script>
+    <script th:src="@{/resources/kr/iotdoor/cmty/portfolio/portfolio-public.js?v=20260507}"></script>
 </th:block>
 </html>