Improve property description hints for dialogs

server/src/wled_controller/static/app.js

@@ -2,6 +2,16 @@ const API_BASE = '/api/v1';
 let refreshInterval = null;
 let apiKey = null;
 
+// Toggle hint description visibility next to a label
+function toggleHint(btn) {
+    const hint = btn.closest('.label-row').nextElementSibling;
+    if (hint && hint.classList.contains('input-hint')) {
+        const visible = hint.style.display !== 'none';
+        hint.style.display = visible ? 'none' : 'block';
+        btn.classList.toggle('active', !visible);
+    }
+}
+
 // Backdrop click helper: only closes modal if both mousedown and mouseup were on the backdrop itself.
 // Prevents accidental close when user drags text selection outside the dialog.
 function setupBackdropClose(modal, closeFn) {

server/src/wled_controller/static/index.html

@@ -203,15 +203,21 @@
                     </div>
 
                     <div class="form-group">
-                        <label for="settings-device-url" data-i18n="device.url">WLED URL:</label>
+                        <div class="label-row">
+                            <label for="settings-device-url" data-i18n="device.url">WLED URL:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="settings.url.hint">IP address or hostname of your WLED device</small>
                         <input type="url" id="settings-device-url" data-i18n-placeholder="device.url.placeholder" placeholder="http://192.168.1.100" required>
-                        <small class="input-hint" data-i18n="settings.url.hint">IP address or hostname of your WLED device</small>
                     </div>
 
                     <div class="form-group">
-                        <label for="settings-health-interval" data-i18n="settings.health_interval">Health Check Interval (s):</label>
+                        <div class="label-row">
+                            <label for="settings-health-interval" data-i18n="settings.health_interval">Health Check Interval (s):</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="settings.health_interval.hint">How often to check the WLED device status (5-600 seconds)</small>
                         <input type="number" id="settings-health-interval" min="5" max="600" value="30">
-                        <small class="input-hint" data-i18n="settings.health_interval.hint">How often to check the WLED device status (5-600 seconds)</small>
                     </div>
 
                     <div id="settings-error" class="error-message" style="display: none;"></div>
@@ -236,35 +242,47 @@
                     <input type="hidden" id="stream-selector-device-id">
 
                     <div class="form-group">
-                        <label for="stream-selector-stream" data-i18n="device.stream_selector.label">Stream:</label>
+                        <div class="label-row">
+                            <label for="stream-selector-stream" data-i18n="device.stream_selector.label">Stream:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="device.stream_selector.hint">Select a stream that defines what this device captures and processes</small>
                         <select id="stream-selector-stream"></select>
                         <div id="stream-selector-info" class="stream-info-panel" style="display: none;"></div>
-                        <small class="input-hint" data-i18n="device.stream_selector.hint">Select a stream that defines what this device captures and processes</small>
                     </div>
 
                     <div class="form-group">
-                        <label for="stream-selector-border-width" data-i18n="device.stream_settings.border_width">Border Width (px):</label>
+                        <div class="label-row">
+                            <label for="stream-selector-border-width" data-i18n="device.stream_settings.border_width">Border Width (px):</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="device.stream_settings.border_width_hint">How many pixels from the screen edge to sample for LED colors (1-100)</small>
                         <input type="number" id="stream-selector-border-width" min="1" max="100" value="10">
-                        <small class="input-hint" data-i18n="device.stream_settings.border_width_hint">How many pixels from the screen edge to sample for LED colors (1-100)</small>
                     </div>
 
                     <div class="form-group">
-                        <label for="stream-selector-interpolation" data-i18n="device.stream_settings.interpolation">Interpolation Mode:</label>
+                        <div class="label-row">
+                            <label for="stream-selector-interpolation" data-i18n="device.stream_settings.interpolation">Interpolation Mode:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="device.stream_settings.interpolation_hint">How to calculate LED color from sampled pixels</small>
                         <select id="stream-selector-interpolation">
                             <option value="average" data-i18n="device.stream_settings.interpolation.average">Average</option>
                             <option value="median" data-i18n="device.stream_settings.interpolation.median">Median</option>
                             <option value="dominant" data-i18n="device.stream_settings.interpolation.dominant">Dominant</option>
                         </select>
-                        <small class="input-hint" data-i18n="device.stream_settings.interpolation_hint">How to calculate LED color from sampled pixels</small>
                     </div>
 
                     <div class="form-group">
-                        <label for="stream-selector-smoothing">
+                        <div class="label-row">
-                            <span data-i18n="device.stream_settings.smoothing">Smoothing:</span>
+                            <label for="stream-selector-smoothing">
-                            <span id="stream-selector-smoothing-value">0.3</span>
+                                <span data-i18n="device.stream_settings.smoothing">Smoothing:</span>
-                        </label>
+                                <span id="stream-selector-smoothing-value">0.3</span>
+                            </label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="device.stream_settings.smoothing_hint">Temporal blending between frames (0=none, 1=full). Reduces flicker.</small>
                         <input type="range" id="stream-selector-smoothing" min="0.0" max="1.0" step="0.05" value="0.3" oninput="document.getElementById('stream-selector-smoothing-value').textContent = this.value">
-                        <small class="input-hint" data-i18n="device.stream_settings.smoothing_hint">Temporal blending between frames (0=none, 1=full). Reduces flicker.</small>
                     </div>
 
                     <div id="stream-selector-error" class="error-message" style="display: none;"></div>
@@ -290,7 +308,11 @@
                         Please enter your API key to authenticate and access the WLED Grab.
                     </p>
                     <div class="form-group">
-                        <label for="api-key-input" data-i18n="auth.label">API Key:</label>
+                        <div class="label-row">
+                            <label for="api-key-input" data-i18n="auth.label">API Key:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="auth.hint">Your API key will be stored securely in your browser's local storage.</small>
                         <div class="password-input-wrapper">
                             <input
                                 type="password"
@@ -303,7 +325,6 @@
                                 👁️
                             </button>
                         </div>
-                        <small class="input-hint" data-i18n="auth.hint">Your API key will be stored securely in your browser's local storage.</small>
                     </div>
                     <div id="api-key-error" class="error-message" style="display: none;"></div>
                 </div>
@@ -380,7 +401,11 @@
                     </div>
 
                     <div class="form-group">
-                        <label for="template-engine" data-i18n="templates.engine">Capture Engine:</label>
+                        <div class="label-row">
+                            <label for="template-engine" data-i18n="templates.engine">Capture Engine:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="templates.engine.hint">Select the screen capture technology to use</small>
                         <select id="template-engine" onchange="onEngineChange()" required>
                             <option value="" data-i18n="templates.engine.select">Select an engine...</option>
                         </select>
@@ -506,18 +531,30 @@
                     <!-- Raw stream fields -->
                     <div id="stream-raw-fields">
                         <div class="form-group">
-                            <label data-i18n="streams.display">Display:</label>
+                            <div class="label-row">
+                                <label data-i18n="streams.display">Display:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="streams.display.hint">Which screen to capture</small>
                             <input type="hidden" id="stream-display-index" value="">
                             <button type="button" class="btn btn-display-picker" id="stream-display-picker-btn" onclick="openDisplayPicker(onStreamDisplaySelected, document.getElementById('stream-display-index').value)">
                                 <span id="stream-display-picker-label" data-i18n="displays.picker.select">Select display...</span>
                             </button>
                         </div>
                         <div class="form-group">
-                            <label for="stream-capture-template" data-i18n="streams.capture_template">Capture Template:</label>
+                            <div class="label-row">
+                                <label for="stream-capture-template" data-i18n="streams.capture_template">Capture Template:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="streams.capture_template.hint">Engine template defining how the screen is captured</small>
                             <select id="stream-capture-template"></select>
                         </div>
                         <div class="form-group">
-                            <label for="stream-target-fps" data-i18n="streams.target_fps">Target FPS:</label>
+                            <div class="label-row">
+                                <label for="stream-target-fps" data-i18n="streams.target_fps">Target FPS:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="streams.target_fps.hint">Target frames per second for capture (10-90)</small>
                             <div class="slider-row">
                                 <input type="range" id="stream-target-fps" min="10" max="90" value="30" oninput="document.getElementById('stream-target-fps-value').textContent = this.value">
                                 <span id="stream-target-fps-value" class="slider-value">30</span>
@@ -528,11 +565,19 @@
                     <!-- Processed stream fields -->
                     <div id="stream-processed-fields" style="display: none;">
                         <div class="form-group">
-                            <label for="stream-source" data-i18n="streams.source">Source Stream:</label>
+                            <div class="label-row">
+                                <label for="stream-source" data-i18n="streams.source">Source Stream:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="streams.source.hint">The stream to apply processing filters to</small>
                             <select id="stream-source"></select>
                         </div>
                         <div class="form-group">
-                            <label for="stream-pp-template" data-i18n="streams.pp_template">Processing Template:</label>
+                            <div class="label-row">
+                                <label for="stream-pp-template" data-i18n="streams.pp_template">Processing Template:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="streams.pp_template.hint">Filter template to apply to the source stream</small>
                             <select id="stream-pp-template"></select>
                         </div>
                     </div>
@@ -540,9 +585,12 @@
                     <!-- Static image fields -->
                     <div id="stream-static-image-fields" style="display: none;">
                         <div class="form-group">
-                            <label for="stream-image-source" data-i18n="streams.image_source">Image Source:</label>
+                            <div class="label-row">
+                                <label for="stream-image-source" data-i18n="streams.image_source">Image Source:</label>
+                                <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                            </div>
+                            <small class="input-hint" style="display:none" data-i18n="streams.image_source.hint">Enter a URL (http/https) or local file path to an image</small>
                             <input type="text" id="stream-image-source" data-i18n-placeholder="streams.image_source.placeholder" placeholder="https://example.com/image.jpg or C:\path\to\image.png">
-                            <small class="form-hint" data-i18n="streams.image_source.hint">Enter a URL (http/https) or local file path to an image</small>
                         </div>
                         <div id="stream-image-preview-container" class="image-preview-container" style="display: none;">
                             <img id="stream-image-preview" class="stream-image-preview" src="" alt="Preview">

server/src/wled_controller/static/locales/en.json

@@ -46,6 +46,7 @@
   "templates.description.label": "Description (optional):",
   "templates.description.placeholder": "Describe this template...",
   "templates.engine": "Capture Engine:",
+  "templates.engine.hint": "Select the screen capture technology to use",
   "templates.engine.select": "Select an engine...",
   "templates.engine.unavailable": "Unavailable",
   "templates.engine.unavailable.hint": "This engine is not available on your system",
@@ -215,10 +216,15 @@
   "streams.type.raw": "Screen Capture",
   "streams.type.processed": "Processed",
   "streams.display": "Display:",
+  "streams.display.hint": "Which screen to capture",
   "streams.capture_template": "Engine Template:",
+  "streams.capture_template.hint": "Engine template defining how the screen is captured",
   "streams.target_fps": "Target FPS:",
+  "streams.target_fps.hint": "Target frames per second for capture (10-90)",
   "streams.source": "Source Stream:",
+  "streams.source.hint": "The stream to apply processing filters to",
   "streams.pp_template": "Filter Template:",
+  "streams.pp_template.hint": "Filter template to apply to the source stream",
   "streams.description_label": "Description (optional):",
   "streams.description_placeholder": "Describe this stream...",
   "streams.created": "Stream created successfully",

server/src/wled_controller/static/locales/ru.json

@@ -46,6 +46,7 @@
   "templates.description.label": "Описание (необязательно):",
   "templates.description.placeholder": "Опишите этот шаблон...",
   "templates.engine": "Движок Захвата:",
+  "templates.engine.hint": "Выберите технологию захвата экрана",
   "templates.engine.select": "Выберите движок...",
   "templates.engine.unavailable": "Недоступен",
   "templates.engine.unavailable.hint": "Этот движок недоступен в вашей системе",
@@ -215,10 +216,15 @@
   "streams.type.raw": "Захват экрана",
   "streams.type.processed": "Обработанный",
   "streams.display": "Дисплей:",
+  "streams.display.hint": "Какой экран захватывать",
   "streams.capture_template": "Шаблон Движка:",
+  "streams.capture_template.hint": "Шаблон движка, определяющий способ захвата экрана",
   "streams.target_fps": "Целевой FPS:",
+  "streams.target_fps.hint": "Целевое количество кадров в секунду (10-90)",
   "streams.source": "Исходный Поток:",
+  "streams.source.hint": "Поток, к которому применяются фильтры обработки",
   "streams.pp_template": "Шаблон Фильтра:",
+  "streams.pp_template.hint": "Шаблон фильтра для применения к исходному потоку",
   "streams.description_label": "Описание (необязательно):",
   "streams.description_placeholder": "Опишите этот поток...",
   "streams.created": "Поток успешно создан",

server/src/wled_controller/static/style.css

@@ -966,9 +966,49 @@ input:-webkit-autofill:focus {
     opacity: 1;
 }
 
+.label-row {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    margin-bottom: 5px;
+}
+
+.label-row label {
+    margin-bottom: 0;
+}
+
+.hint-toggle {
+    background: none;
+    border: 1px solid var(--border-color);
+    border-radius: 50%;
+    width: 18px;
+    height: 18px;
+    font-size: 0.7rem;
+    line-height: 1;
+    color: var(--text-secondary, #888);
+    cursor: pointer;
+    padding: 0;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    opacity: 0.6;
+    transition: opacity 0.2s;
+    flex-shrink: 0;
+}
+
+.hint-toggle:hover {
+    opacity: 1;
+}
+
+.hint-toggle.active {
+    opacity: 1;
+    color: var(--primary-color, #4CAF50);
+    border-color: var(--primary-color, #4CAF50);
+}
+
 .input-hint {
     display: block;
-    margin-top: 8px;
+    margin: 0 0 6px 0;
     color: #666;
     font-size: 0.85rem;
 }