use horizontal scroll for pages container

By making small thumbnails and aligning everything horizontally the space on the screen is used better.

src/main/resources/static/css/dark-mode.css

@@ -26,4 +26,9 @@ body {
 }
 
 
-
+#pages-container {
+  --background-color: rgba(255, 255, 255, 0.046) !important;
+  --scroll-bar-color: #4c4c4c !important;
+  --scroll-bar-thumb: #d3d3d3 !important;
+  --scroll-bar-thumb-hover: #ffffff !important;
+}

src/main/resources/static/css/general.css

@@ -31,6 +31,13 @@ html[lang-direction=rtl] * {
     right: 0;
     top: 50%;
 }
+
+.align-center-left {
+    position: absolute;
+    left: 0;
+    top: 50%;
+}
+
 .align-bottom {
     position: absolute;
     bottom: 0;

src/main/resources/templates/multi-tool.html

@@ -11,9 +11,9 @@
             <br> <br>
             <div class="container">
                 <div class="row justify-content-center">
+                    <h2 th:text="#{multiTool.header}"></h2>
+                    <div class="col-md-12" style="text-align: center" id="pages-container"></div>
                     <div class="col-md-6" style="text-align: center">
-                        <h2 th:text="#{multiTool.header}"></h2>
-                        
                         <div id="global-buttons-container">
                             
                             <button class="btn btn-primary" onclick="addPdfs()">
@@ -45,10 +45,8 @@
                             </button>
 
                         </div>
-
-                        <div id="pages-container"></div>
-
                     </div>
+
                 </div>
             </div>
         </div>
@@ -59,21 +57,36 @@
         var fileName = null;
         const pagesContainer = document.getElementById("pages-container");
 
-        // add the bottom "insert pdf" button that appears on the right when hovered over
+        var scrollDelta = 0; // variable to store the accumulated scroll delta
-        const bottomInsertFileButtonContainer = document.createElement('div');
+        var isScrolling = false; // variable to track if scroll is already in progress
-        bottomInsertFileButtonContainer.classList.add("insert-file-button-container", "align-bottom");
-        bottomInsertFileButtonContainer.style.transform = "translate(0, 50%)";
 
-            const bottomInsertFileButton = document.createElement('button');
+        pagesContainer.addEventListener("wheel", function(e) {
-            bottomInsertFileButton.classList.add("btn", "btn-primary", "insert-file-button");
+            e.preventDefault(); // prevent default mousewheel behavior
-            bottomInsertFileButton.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-earmark-plus" viewBox="0 0 16 16">
-                                    <path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/>
-                                    <path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/>
-                                </svg>`;
-            bottomInsertFileButton.onclick = e => addPdfs();
-            bottomInsertFileButtonContainer.appendChild(bottomInsertFileButton);
 
-        pagesContainer.appendChild(bottomInsertFileButtonContainer);
+            // Accumulate the horizontal scroll delta
+            scrollDelta -= e.deltaX || e.wheelDeltaX || -e.deltaY || -e.wheelDeltaY;
+
+            // If scroll is not already in progress, start the scroll loop
+            if (!isScrolling) {
+                isScrolling = true;
+                requestAnimationFrame(scrollLoop);
+            }
+        });
+
+        function scrollLoop() {
+            // Scroll the div horizontally by a fraction of the accumulated scroll delta
+            pagesContainer.scrollLeft += scrollDelta * 0.1;
+
+            // Reduce the accumulated scroll delta by a fraction
+            scrollDelta *= 0.9;
+
+            // If scroll delta is still significant, continue the scroll loop
+            if (Math.abs(scrollDelta) > 0.1) {
+                requestAnimationFrame(scrollLoop);
+            } else {
+                isScrolling = false; // Reset scroll in progress flag
+            }
+        }
 
         function addPdfs(nextSiblingElement) {
             var input = document.createElement('input');
@@ -187,14 +200,14 @@
                     buttonContainer.classList.add("button-container");
                         
                         const moveUp = document.createElement('button');
-                        moveUp.classList.add("move-up-button","btn", "btn-secondary");
+                        moveUp.classList.add("move-left-button","btn", "btn-secondary");
-                        moveUp.innerHTML = '<i class="bi bi-arrow-up-short"></i>';
+                        moveUp.innerHTML = '<i class="bi bi-arrow-left-short"></i>';
                         moveUp.onclick = moveUpButtonCallback;
                         buttonContainer.appendChild(moveUp);
 
                         const moveDown = document.createElement('button');
-                        moveDown.classList.add("move-down-button","btn", "btn-secondary");
+                        moveDown.classList.add("move-right-button","btn", "btn-secondary");
-                        moveDown.innerHTML = '<i class="bi bi-arrow-down-short"></i>';
+                        moveDown.innerHTML = '<i class="bi bi-arrow-right-short"></i>';
                         moveDown.onclick = moveDownButtonCallback;
                         buttonContainer.appendChild(moveDown);
                         
@@ -228,7 +241,7 @@
                     div.appendChild(buttonContainer);
 
                     const insertFileButtonContainer = document.createElement('div');
-                    insertFileButtonContainer.classList.add("insert-file-button-container", "align-top");
+                    insertFileButtonContainer.classList.add("insert-file-button-container","left", "align-center-left");
                     
                         const insertFileButton = document.createElement('button');
                         insertFileButton.classList.add("btn", "btn-primary", "insert-file-button");
@@ -241,6 +254,21 @@
                     
                     div.appendChild(insertFileButtonContainer);
                     
+                    // add this button to every element, but only show it on the last one :D
+                    const insertFileButtonRightContainer = document.createElement('div');
+                    insertFileButtonRightContainer.classList.add("insert-file-button-container","right", "align-center-right");
+                    
+                        const insertFileButtonRight = document.createElement('button');
+                        insertFileButtonRight.classList.add("btn", "btn-primary", "insert-file-button");
+                        insertFileButtonRight.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-earmark-plus" viewBox="0 0 16 16">
+                                                <path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/>
+                                                <path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/>
+                                                insertFileButtonRight</svg>`;
+                        insertFileButtonRight.onclick = () => addPdfs();
+                        insertFileButtonRightContainer.appendChild(insertFileButtonRight);
+
+                    div.appendChild(insertFileButtonRightContainer);
+
                 if (nextSiblingElement) {
                     pagesContainer.insertBefore(div, nextSiblingElement);
                 } else {
@@ -358,11 +386,9 @@
             border: 1px solid rgba(0, 0, 0, .25);
             backdrop-filter: blur(2px);
 
-            position: sticky;
             top: 10px;
             z-index: 10;
             padding: 10px;
-            margin-top: 30px;
             border-radius: 8px;
         }
         #global-buttons-container > * {
@@ -377,20 +403,55 @@
         }
 
         #pages-container {
+            --background-color: rgba(0, 0, 0, 0.046);
+            --scroll-bar-color: #f1f1f1;
+            --scroll-bar-thumb: #888;
+            --scroll-bar-thumb-hover: #555;
             width: 100%;
             display: flex;
+            padding: 10px 25px;
             gap: 0px;
-            flex-direction: column;
             align-items: center;
             margin: 30px 0;
+            overflow-y: hidden;
+            overflow-x: auto;
+            min-height: 275px;
+            background-color: var(--background-color);
+            border-radius: 10px;
+        }
+
+        /* width */
+        #pages-container::-webkit-scrollbar {
+            width: 10px;
+            height: 10px;
+        }
+
+        /* Track */
+        #pages-container::-webkit-scrollbar-track {
+        background: var(--scroll-bar-color);
+        }
+
+        /* Handle */
+        #pages-container::-webkit-scrollbar-thumb {
+            border-radius: 10px;
+            background: var(--scroll-bar-thumb);
+        }
+
+        /* Handle on hover */
+        #pages-container::-webkit-scrollbar-thumb:hover {
+        background: var(--scroll-bar-thumb-hover);
         }
 
         .page-container {
-            width: 500px;
+            height:250px;
+            display: flex;
+            align-items: center;
+            flex-direction: column-reverse;
             aspect-ratio: 1;
             text-align: center;
             position: relative;
             user-select: none;
+
         }
 
         .page-container img {
@@ -406,10 +467,8 @@
         }
 
         .page-container .button-container {
-            position: absolute;
+            z-index: 2;
-            top: 50%;
+            display:flex;
-            translate: 0 -50%;
-            right: 6px;
         }
         .page-container .button-container > * {
             padding: 0.25rem 0.5rem;
@@ -420,23 +479,50 @@
             width: 16px;
             height: 16px;
         }
-        .page-container:nth-child(2) .move-up-button {
+        .page-container:nth-child(1) .move-left-button {
-            visibility: hidden;
+            display: none;
         }
-        .page-container:last-child .move-down-button {
+        .page-container:last-child .move-right-button {
-            visibility: hidden;
+            display: none;
         }
 
         /* "insert pdf" buttons that appear on the right when hover */
         .insert-file-button-container {
             translate: 0 -50%;
-            width: 100%;
+            width: 80px;
-            height: 60px;
+            height: 100%;
             
             z-index: 1;
             opacity: 0;
             transition: opacity 0.2s;
         }
+
+        .insert-file-button-container.left {
+            left: -20px;
+        }
+
+        .insert-file-button-container.right {
+            right: -20px;
+        }
+
+        .insert-file-button-container.align-center-right {
+            display:none;
+        }
+
+        .insert-file-button-container.left .insert-file-button {
+            left: 0;
+            translate: 0 -50%;
+        }
+
+        .insert-file-button-container.right .insert-file-button {
+            right: 0;
+            translate: 0 -50%;
+        }
+
+        .page-container:last-child > .insert-file-button-container.right {
+            display: block;
+        }
+
         .insert-file-button-container:hover {
             opacity: 1;
             transition: opacity 0.05s;