From 27a2238082bf91b18092955f8320d09e0b971105 Mon Sep 17 00:00:00 2001
From: dev <dev@local>
Date: Thu, 17 Sep 2026 17:02:35 +0300
Subject: [PATCH] feat: compare slider UI for photo enhance modal

- Side-by-side before/after comparison with draggable divider
- Zoom (scroll wheel) and pan when zoomed in, double-click to reset
- Sliders moved to sidebar panel, responsive layout
- Original/Result badges on the comparison view
- Helper functions: setEnhanceClip, showEnhanceResult, applyEnhanceTransform
---
 public/journal.html  |  68 +++++++++++++++++-------
 public/js/journal.js | 124 ++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 158 insertions(+), 34 deletions(-)

diff --git a/public/journal.html b/public/journal.html
index 0edcab9..27b006e 100644
--- a/public/journal.html
+++ b/public/journal.html
@@ -5,6 +5,33 @@
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <title>Журнал — Админ-панель</title>
 <link rel="stylesheet" href="admin.css">
+<link rel="stylesheet" href="admin.css">
+<style>
+.enhance-modal { max-width: 1100px; width: 94vw; }
+.enhance-body { display: flex; gap: 16px; align-items: stretch; margin-top: 4px; }
+.enhance-compare { position: relative; flex: 1 1 auto; min-width: 0; border-radius: 10px; overflow: hidden; background: var(--bg); border: 1px solid var(--border); user-select: none; touch-action: none; cursor: ew-resize; }
+.enhance-compare.zoomed { cursor: grab; }
+.enhance-compare.panning { cursor: grabbing; }
+.enhance-stage { transform-origin: 0 0; will-change: transform; }
+.enhance-stage > img, .enhance-stage > canvas { display: block; width: 100%; height: 100%; }
+.enhance-stage > img { height: auto; }
+.enhance-top { position: absolute; inset: 0; overflow: hidden; }
+.enhance-top .enhance-stage { position: absolute; inset: 0; }
+.enhance-divider { position: absolute; top: 0; bottom: 0; left: 50%; width: 32px; transform: translateX(-50%); pointer-events: auto; cursor: ew-resize; }
+.enhance-divider::before { content: ''; position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; transform: translateX(-50%); background: #fff; box-shadow: 0 0 6px rgba(0,0,0,.6); pointer-events: none; }
+.enhance-handle { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 34px; height: 34px; border-radius: 50%; background: #fff; color: #333; display: flex; align-items: center; justify-content: center; font-size: 1rem; box-shadow: 0 2px 8px rgba(0,0,0,.4); pointer-events: none; }
+.enhance-badge { position: absolute; top: 10px; padding: 3px 10px; border-radius: 999px; background: rgba(0,0,0,.55); color: #fff; font-size: .72rem; pointer-events: none; }
+.enhance-badge.left { left: 10px; }
+.enhance-badge.right { right: 10px; }
+.enhance-loading { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: .85rem; background: var(--bg); }
+.enhance-sliders { flex: 0 0 240px; display: flex; flex-direction: column; gap: 14px; }
+.enhance-sliders .settings-field input[type=range] { width: 100%; }
+.enhance-foot { justify-content: flex-end; gap: 8px; margin-top: 14px; }
+@media (max-width: 800px) {
+  .enhance-body { flex-direction: column; }
+  .enhance-sliders { flex: 1 1 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
+}
+</style>
 </head>
 <body data-page="journal">
 <div class="layout">
@@ -162,31 +189,32 @@
 </div>
 
 <div class="modal-overlay" id="enhanceModal">
-  <div class="edit-modal" style="max-width:960px">
+  <div class="edit-modal enhance-modal">
     <h3>Улучшение фотографии</h3>
-    <div style="display:flex;gap:16px;flex-wrap:wrap">
-      <div style="flex:1;min-width:280px">
-        <div style="font-size:.8rem;color:var(--muted);margin-bottom:6px">Оригинал</div>
-        <div style="background:var(--bg);border:1px solid var(--border);border-radius:8px;overflow:hidden;min-height:120px;display:flex;align-items:center;justify-content:center">
-          <img id="enhanceOrig" style="max-width:100%;max-height:320px;display:block">
+    <div class="enhance-body">
+      <div class="enhance-compare" id="enhanceCompare">
+        <div class="enhance-stage" id="enhanceStage">
+          <img id="enhanceOrig" alt="Оригинал">
         </div>
+        <div class="enhance-top" id="enhanceTop" style="clip-path:inset(0 0 0 50%)">
+          <div class="enhance-stage" id="enhanceInner">
+            <canvas id="enhanceCanvas"></canvas>
+          </div>
+        </div>
+        <div class="enhance-divider" id="enhanceDivider"><div class="enhance-handle">⇔</div></div>
+        <div class="enhance-badge left">Оригинал</div>
+        <div class="enhance-badge right">Результат</div>
+        <div class="enhance-loading" id="enhanceLoading">Загрузка...</div>
       </div>
-      <div style="flex:1;min-width:280px">
-        <div style="font-size:.8rem;color:var(--muted);margin-bottom:6px">Результат</div>
-        <div style="background:var(--bg);border:1px solid var(--border);border-radius:8px;overflow:hidden;min-height:120px;display:flex;align-items:center;justify-content:center">
-          <canvas id="enhanceCanvas" style="max-width:100%;max-height:320px;display:none"></canvas>
-          <span id="enhanceLoading" style="color:var(--muted);font-size:.8rem;padding:24px">Загрузка...</span>
-        </div>
+      <div class="enhance-sliders">
+        <div class="settings-field"><label>Яркость <span id="enhanceBrightnessVal">100%</span></label><input type="range" id="enhanceBrightness" min="50" max="150" value="100"></div>
+        <div class="settings-field"><label>Контраст <span id="enhanceContrastVal">100%</span></label><input type="range" id="enhanceContrast" min="50" max="150" value="100"></div>
+        <div class="settings-field"><label>Насыщенность <span id="enhanceSaturateVal">100%</span></label><input type="range" id="enhanceSaturate" min="0" max="200" value="100"></div>
+        <div class="settings-field"><label>Шумодав <span id="enhanceDenoiseVal">0%</span></label><input type="range" id="enhanceDenoise" min="0" max="100" value="0"></div>
+        <div class="settings-field"><label>Резкость <span id="enhanceSharpVal">0%</span></label><input type="range" id="enhanceSharp" min="0" max="100" value="0"></div>
       </div>
     </div>
-    <div style="display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:14px">
-      <div class="settings-field"><label>Яркость <span id="enhanceBrightnessVal">100%</span></label><input type="range" id="enhanceBrightness" min="50" max="150" value="100"></div>
-      <div class="settings-field"><label>Контраст <span id="enhanceContrastVal">100%</span></label><input type="range" id="enhanceContrast" min="50" max="150" value="100"></div>
-      <div class="settings-field"><label>Насыщенность <span id="enhanceSaturateVal">100%</span></label><input type="range" id="enhanceSaturate" min="0" max="200" value="100"></div>
-      <div class="settings-field"><label>Шумодав <span id="enhanceDenoiseVal">0%</span></label><input type="range" id="enhanceDenoise" min="0" max="100" value="0"></div>
-      <div class="settings-field"><label>Резкость <span id="enhanceSharpVal">0%</span></label><input type="range" id="enhanceSharp" min="0" max="100" value="0"></div>
-    </div>
-    <div class="card-foot" style="justify-content:flex-end;gap:8px;margin-top:6px">
+    <div class="card-foot enhance-foot">
       <button type="button" class="btn-primary ghost" id="enhanceRestoreBtn" style="display:none" title="Вернуть исходную фотографию">↩ Вернуть оригинал</button>
       <button type="button" class="btn-primary ghost" id="enhanceAiBtn" style="display:none" title="ИИ-восстановление (Real-ESRGAN)">🤖 ИИ</button>
       <button type="button" class="btn-primary ghost" id="enhanceAutoBtn" title="Подобрать настройки автоматически">✨ Авто</button>
diff --git a/public/js/journal.js b/public/js/journal.js
index b06c283..dbc522d 100644
--- a/public/js/journal.js
+++ b/public/js/journal.js
@@ -427,6 +427,107 @@ let enhanceEngineLoaded = false;
 let photoAiEnabled = false;
 let photoAiPollTimer = null;
 let enhanceAiResultPath = null;
+let enhanceClipPos = 50;
+
+function setEnhanceClip(p) {
+  enhanceClipPos = Math.min(100, Math.max(0, p));
+  document.getElementById('enhanceTop').style.clipPath = `inset(0 0 0 ${enhanceClipPos}%)`;
+  document.getElementById('enhanceDivider').style.left = enhanceClipPos + '%';
+}
+
+function showEnhanceResult(show) {
+  document.getElementById('enhanceTop').style.display = show ? '' : 'none';
+  document.getElementById('enhanceLoading').style.display = show ? 'none' : '';
+}
+
+function setEnhanceLoadingText(text) {
+  const el = document.getElementById('enhanceLoading');
+  el.style.display = '';
+  el.textContent = text;
+}
+
+let enhanceZoom = 1;
+let enhancePanX = 0;
+let enhancePanY = 0;
+
+function applyEnhanceTransform() {
+  const t = `translate(${enhancePanX}px, ${enhancePanY}px) scale(${enhanceZoom})`;
+  document.getElementById('enhanceStage').style.transform = t;
+  document.getElementById('enhanceInner').style.transform = t;
+  const area = document.getElementById('enhanceCompare');
+  area.classList.toggle('zoomed', enhanceZoom > 1);
+  if (enhanceZoom <= 1) area.classList.remove('panning');
+}
+
+function clampEnhancePan() {
+  const rect = document.getElementById('enhanceCompare').getBoundingClientRect();
+  const minX = rect.width * (1 - enhanceZoom);
+  const minY = rect.height * (1 - enhanceZoom);
+  enhancePanX = Math.min(0, Math.max(minX, enhancePanX));
+  enhancePanY = Math.min(0, Math.max(minY, enhancePanY));
+}
+
+function resetEnhanceZoom() {
+  enhanceZoom = 1;
+  enhancePanX = 0;
+  enhancePanY = 0;
+  applyEnhanceTransform();
+}
+
+(function initEnhanceDrag() {
+  const area = document.getElementById('enhanceCompare');
+  let dragging = false;
+  let dividerDrag = false;
+  let lastX = 0;
+  let lastY = 0;
+  const move = ev => {
+    const rect = area.getBoundingClientRect();
+    setEnhanceClip(((ev.clientX - rect.left) / rect.width) * 100);
+  };
+  area.addEventListener('pointerdown', ev => {
+    dividerDrag = !!ev.target.closest('#enhanceDivider');
+    dragging = true;
+    lastX = ev.clientX;
+    lastY = ev.clientY;
+    area.setPointerCapture(ev.pointerId);
+    if (!dividerDrag && enhanceZoom === 1) move(ev);
+  });
+  area.addEventListener('pointermove', ev => {
+    if (!dragging) return;
+    if (dividerDrag || enhanceZoom === 1) {
+      move(ev);
+    } else {
+      area.classList.add('panning');
+      enhancePanX += ev.clientX - lastX;
+      enhancePanY += ev.clientY - lastY;
+      lastX = ev.clientX;
+      lastY = ev.clientY;
+      clampEnhancePan();
+      applyEnhanceTransform();
+    }
+  });
+  const end = () => {
+    dragging = false;
+    area.classList.remove('panning');
+  };
+  area.addEventListener('pointerup', end);
+  area.addEventListener('pointercancel', end);
+  area.addEventListener('wheel', ev => {
+    ev.preventDefault();
+    const rect = area.getBoundingClientRect();
+    const cx = ev.clientX - rect.left;
+    const cy = ev.clientY - rect.top;
+    const prev = enhanceZoom;
+    const next = Math.min(5, Math.max(1, enhanceZoom * (ev.deltaY < 0 ? 1.15 : 1 / 1.15)));
+    if (next === prev) return;
+    enhanceZoom = next;
+    enhancePanX = cx - (cx - enhancePanX) * (next / prev);
+    enhancePanY = cy - (cy - enhancePanY) * (next / prev);
+    clampEnhancePan();
+    applyEnhanceTransform();
+  }, { passive: false });
+  area.addEventListener('dblclick', resetEnhanceZoom);
+})();
 
 async function loadEnhanceEngine() {
   if (enhanceEngineLoaded) return;
@@ -446,8 +547,6 @@ async function runPhotoAi() {
   enhanceSaving = true;
   const btn = document.getElementById('enhanceAiBtn');
   btn.disabled = true;
-  const loading = document.getElementById('enhanceLoading');
-  const canvas = document.getElementById('enhanceCanvas');
   try {
     const res = await fetch(`${API}/api/entries/${enhanceEntryId}/photo/enhance-ai`, { method: 'POST', headers: hdr() });
     if (!res.ok) {
@@ -455,9 +554,8 @@ async function runPhotoAi() {
       throw new Error(err.error || 'Ошибка запуска ИИ');
     }
     const { jobId } = await res.json();
-    canvas.style.display = 'none';
-    loading.style.display = '';
-    loading.textContent = 'ИИ обрабатывает фото... (может занять до минуты)';
+    showEnhanceResult(false);
+    setEnhanceLoadingText('ИИ обрабатывает фото... (может занять до минуты)');
     btn.textContent = '⏳ ИИ...';
     const result = await new Promise((resolve, reject) => {
       photoAiPollTimer = setInterval(async () => {
@@ -488,8 +586,7 @@ async function runPhotoAi() {
     aiImg.onerror = () => { showToast('Не удалось загрузить результат ИИ'); };
     aiImg.src = `${API}${result.photo_path}`;
   } catch (e) {
-    loading.style.display = 'none';
-    canvas.style.display = 'block';
+    showEnhanceResult(true);
     alert(e.message);
   } finally {
     enhanceSaving = false;
@@ -545,17 +642,17 @@ function openEnhance(id) {
     document.getElementById('enhanceAiBtn').style.display = photoAiEnabled ? '' : 'none';
   });
   const canvas = document.getElementById('enhanceCanvas');
-  canvas.style.display = 'none';
-  const loading = document.getElementById('enhanceLoading');
-  loading.style.display = '';
-  loading.textContent = 'Загрузка...';
+  setEnhanceClip(50);
+  resetEnhanceZoom();
+  showEnhanceResult(false);
+  setEnhanceLoadingText('Загрузка...');
   const img = new Image();
   img.onload = () => {
     enhanceSourceImg = img;
     renderEnhancePreview();
   };
   img.onerror = () => {
-    loading.textContent = 'Не удалось загрузить фото';
+    setEnhanceLoadingText('Не удалось загрузить фото');
   };
   img.src = `${API}${mp}`;
   document.getElementById('enhanceModal').classList.add('open');
@@ -651,8 +748,7 @@ function renderEnhancePreview() {
   canvas.height = h;
   const ctx = canvas.getContext('2d');
   drawEnhanced(ctx, img, w, h);
-  canvas.style.display = 'block';
-  document.getElementById('enhanceLoading').style.display = 'none';
+  showEnhanceResult(true);
 }
 
 function scheduleEnhancePreview() {