feat: add zoom slider and trackpad panning

src/components/Navbar/QuickButton/QuickButton.vue

@@ -70,25 +70,17 @@
                 <i style="color: #ddd" class="fas fa-expand-arrows-alt"></i>
             </button>
         </div>
-        <div class="zoom-slider">
-            <button class="zoom-slider-decrement" @click="decrement">-</button>
-            <input
-                id="customRange1"
-                type="range"
-                class="custom-range"
-                min="0"
-                max="45"
-                step="1"
-            />
-            <span id="slider_value"></span>
-            <button class="zoom-slider-increment" @click="increment">+</button>
+        <!-- Zoom controls: +/- buttons -->
+        <div class="zoom-controls">
+            <button class="zoom-button-decrement" @click="decrement" title="Zoom Out">−</button>
+            <button class="zoom-button-increment" @click="increment" title="Zoom In">+</button>
         </div>
     </div>
     <div id="exitView"></div>
 </template>
 
 <script lang="ts" setup>
-import { saveOnline, saveOffline, deleteSelectedItem, createSaveAsImgPrompt, zoomToFit, undoit, redoit, view, decrement, increment } from './QuickButton';
+import { saveOnline, saveOffline, deleteSelectedItem, createSaveAsImgPrompt, zoomToFit, undoit, redoit, view, increment, decrement } from './QuickButton'
 
 function dragover(): void {
     const quickBtn: HTMLElement | null = document.querySelector('.quick-btn')
@@ -203,58 +195,77 @@ function dragover(): void {
     color: white
 }
 
-.zoom-slider {
+/* Zoom controls with slider (1-100% display) */
+.zoom-controls {
+    display: flex;
+    gap: 8px;
+    align-items: center;
+}
+
+.zoom-button-decrement,
+.zoom-button-increment {
+    background: transparent;
     color: white;
+    border: none;
+    cursor: pointer;
     font-size: 20px;
-    padding-top: 0.2rem;
+    font-weight: bold;
+    padding: 0 6px;
+    line-height: 1;
+    min-width: 24px;
 }
 
-.zoom-slider-decrement {
-    position: relative;
-    padding-right: 4px;
-    bottom: 0.3rem;
-}
-.zoom-slider-increment {
-    position: relative;
-    padding-left: 4px;
-    bottom: 0.3rem;
+.zoom-button-decrement:hover,
+.zoom-button-increment:hover {
+    opacity: 0.7;
 }
 
-.custom-range {
-    width: 80px !important;
-}
-.custom-range::-moz-range-track {
-    height: 1px;
+.zoom-slider {
+    width: 100px;
+    height: 5px;
+    -webkit-appearance: none;
+    appearance: none;
+    background: rgba(255, 255, 255, 0.2);
+    border-radius: 3px;
+    outline: none;
+    cursor: pointer;
 }
 
-.custom-range::-moz-range-thumb {
-    width: 10px;
-    height: 10px;
-    background-color: white;
-    border: 0;
+.zoom-slider::-webkit-slider-thumb {
+    -webkit-appearance: none;
+    appearance: none;
+    width: 14px;
+    height: 14px;
+    background: white;
     border-radius: 50%;
     cursor: pointer;
+    transition: background 0.15s ease-in-out;
 }
-.custom-range:focus::-moz-range-thumb {
-    box-shadow: 0 0 0 1px #fff, 0 0 0 0.2rem rgba(75, 86, 99, 0.25);
+
+.zoom-slider::-webkit-slider-thumb:hover {
+    background: #ddd;
 }
 
-input[type='range'] {
-    -webkit-appearance: none;
+.zoom-slider::-moz-range-thumb {
+    width: 14px;
+    height: 14px;
+    background: white;
+    border: none;
+    border-radius: 50%;
+    cursor: pointer;
+    transition: background 0.15s ease-in-out;
 }
 
-input[type='range']::-webkit-slider-runnable-track {
-    height: 1px;
+.zoom-slider::-moz-range-thumb:hover {
+    background: #ddd;
 }
 
-input[type='range']::-webkit-slider-thumb {
-    -webkit-appearance: none;
-    width: 10px;
-    height: 10px;
-    background-color: white;
-    border: 0;
-    border-radius: 50%;
-    cursor: pointer;
+.zoom-label {
+    color: white;
+    font-size: 12px;
+    font-weight: 500;
+    min-width: 40px;
+    text-align: right;
 }
 
 @media (max-width: 991px) {

src/components/Navbar/QuickButton/QuickButtonMobile.vue

@@ -80,19 +80,11 @@
       <Hamburger2 v-if="simulatorMobileStore.showMobileView" :navbar-data="navbarData" />
     </nav>
     </div>
+    <!-- Zoom controls: +/- buttons -->
     <div class="slider-container">
-      <div class="zoom-slider">
-          <button class="zoom-slider-decrement" @click="decrement">-</button>
-          <input
-              id="customRange1"
-              type="range"
-              class="custom-range"
-              min="0"
-              max="45"
-              step="1"
-          />
-          <span id="slider_value"></span>
-          <button class="zoom-slider-increment" @click="increment">+</button>
+      <div class="zoom-controls">
+          <button class="zoom-button-decrement" @click="decrement" title="Zoom Out">−</button>
+          <button class="zoom-button-increment" @click="increment" title="Zoom In">+</button>
       </div>
   </div>
   </div>
@@ -101,9 +93,9 @@
 
 <script lang="ts" setup>
 import Hamburger2 from '../Hamburger/Hamburger2.vue'
-import navbarData from '#/assets/constants/Navbar/NAVBAR_DATA.json'
-import { useSimulatorMobileStore } from '#/store/simulatorMobileStore'
-import { saveOnline, saveOffline, deleteSelectedItem, createSaveAsImgPrompt, zoomToFit, undoit, redoit, view, decrement, increment } from './QuickButton';
+import navbarData from '../../../assets/constants/Navbar/NAVBAR_DATA.json'
+import { useSimulatorMobileStore } from '../../../store/simulatorMobileStore'
+import { saveOnline, saveOffline, deleteSelectedItem, createSaveAsImgPrompt, zoomToFit, undoit, redoit, view, increment, decrement } from './QuickButton'
 
 const simulatorMobileStore = useSimulatorMobileStore()
 </script>
@@ -154,14 +146,79 @@ const simulatorMobileStore = useSimulatorMobileStore()
   color: white;
 }
 
-.zoom-slider {
+/* Zoom controls with slider (1-100% display) */
+.zoom-controls {
   display: flex;
   gap: 1rem;
-  width: 90%;
+  justify-content: center;
+  align-items: center;
+  padding: 0.5rem 0;
+}
+
+.zoom-button-decrement,
+.zoom-button-increment {
+  background: transparent;
+  color: white;
+  border: none;
+  cursor: pointer;
+  font-size: 24px;
+  font-weight: bold;
+  padding: 0 8px;
+  line-height: 1;
+  min-width: 32px;
+}
+
+.zoom-button-decrement:hover,
+.zoom-button-increment:hover {
+  opacity: 0.7;
+}
+
+.zoom-slider {
+  width: 120px;
+  height: 6px;
+  -webkit-appearance: none;
+  appearance: none;
+  background: rgba(255, 255, 255, 0.2);
+  border-radius: 3px;
+  outline: none;
+  cursor: pointer;
+}
+
+.zoom-slider::-webkit-slider-thumb {
+  -webkit-appearance: none;
+  appearance: none;
+  width: 16px;
+  height: 16px;
+  background: white;
+  border-radius: 50%;
+  cursor: pointer;
+  transition: background 0.15s ease-in-out;
 }
 
-.custom-range {
-  width: 90% !important;
+.zoom-slider::-webkit-slider-thumb:hover {
+  background: #ddd;
+}
+
+.zoom-slider::-moz-range-thumb {
+  width: 16px;
+  height: 16px;
+  background: white;
+  border: none;
+  border-radius: 50%;
+  cursor: pointer;
+  transition: background 0.15s ease-in-out;
+}
+
+.zoom-slider::-moz-range-thumb:hover {
+  background: #ddd;
+}
+
+.zoom-label {
+  color: white;
+  font-size: 14px;
+  font-weight: 500;
+  min-width: 45px;
+  text-align: right;
 }
 
 @media (max-width: 768px) {

src/simulator/src/embedListeners.js

@@ -174,16 +174,19 @@ export default function startListeners() {
         updateSimulationSet(true);
         updatePositionSet(true);
 
-        // zoom in (+)
+        // Zoom is now on Cmd/Ctrl +/- (primary zoom method)
         if (e.key == 'Meta' || e.key == 'Control') {
             simulationArea.controlDown = true;
         }
-        if (simulationArea.controlDown && (e.keyCode == 187 || e.KeyCode == 171)) {
+        // Zoom in: Cmd/Ctrl + '+' or Cmd/Ctrl + '='
+        // (On US keyboards, '+' is Shift+'=', so we accept both to handle with/without Shift)
+        if (simulationArea.controlDown && (e.keyCode == 187 || e.keyCode == 171 || e.key == '+' || e.key == '=')) {
             e.preventDefault();
             ZoomIn();
         }
-        // zoom out (-)
-        if (simulationArea.controlDown && (e.keyCode == 189 || e.Keycode == 173)) {
+        // Zoom out: Cmd/Ctrl + '-'
+        // (Only '-', not '_', since '_' requires Shift and could cause confusion)
+        if (simulationArea.controlDown && (e.keyCode == 189 || e.keyCode == 173 || e.key == '-')) {
             e.preventDefault();
             ZoomOut();
         }

src/simulator/src/engine.js

@@ -322,7 +322,7 @@ export function updateSelectionsAndPane(scope = globalScope) {
         simulationArea.lastSelected === scope.root &&
         simulationArea.mouseDown
     ) {
-        // pane canvas to give an idea of grid moving
+        // Original behavior: pan canvas when dragging on empty space (not selecting objects)
         if (!objectSelection) {
             globalScope.ox =
                 simulationArea.mouseRawX -