3164 bug issue on UI pdf multi tool (#3289)

# Description of Changes

* Added spacing between pages on multi-tool
* pages now have square area so all dimensions of page can be previewed
* Removed excessive CSS
* Tidied up left hand page buttons. 


Closes #(3164)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

src/main/resources/static/css/dragdrop.css

@@ -59,17 +59,21 @@ html[dir="rtl"] .drag-manager_draghover img {
   background-color: #ffffff10;
   transition: width 0.1s;
   animation: end-drop-expand 0.3s ease;
-  display: flex;
   align-items: center;
   justify-content: center;
   margin-left:16px;
   border-radius: 8px;
-
 }
 
 .drag-manager_endpoint svg {
   width: 50px;
   height: 50px;
+
+  display: block;
+  position: absolute;
+  left: 50%;
+  top: 50%;
+  translate: -50% -50%;
 }
 
 .drag-manager_endpoint.drag-manager_draghover {

src/main/resources/static/css/multi-tool.css

@@ -85,18 +85,14 @@ label {
   flex-direction: column;
   padding: 1rem;
   border-radius: 25px;
-  overflow-y: clip;
-  overflow-x: auto;
   min-height: 275px;
   margin: 0 0 30px 0;
 }
 
 #pages-container {
-  gap: 0px;
-  display: flex;
-  flex-wrap: wrap;
-  margin-left: -15px;
-  margin-right: -15px;
+  margin: 0 auto;     
+  width: 95%; 
+  font-size: 0;        
 }
 
 /* width */
@@ -121,18 +117,20 @@ label {
   background: var(--scroll-bar-thumb-hover);
 }
 
+
 .page-container {
+  display: inline-block;
+  list-style-type: none;
+  width: 250px;
   height: 250px;
-  display: flex;
-  align-items: center;
-  flex-direction: column-reverse;
-  aspect-ratio: 1;
+  line-height: 50px;
+  margin: 15px 25px;
+  box-sizing: border-box;
   text-align: center;
+  aspect-ratio: 1;
   position: relative;
   user-select: none;
   transition: width 1s linear;
-  margin-top: 16px;
-  margin-bottom: 16px;
 }
 
 .page-container.split-before {
@@ -196,9 +194,8 @@ label {
 }
 
 .page-container img {
-  /* max-width: calc(100% - 15px); */
+  max-width: calc(100% - 15px);
   max-height: calc(100% - 15px);
-  max-width: 237px;
   display: block;
   position: absolute;
   left: 50%;
@@ -217,6 +214,7 @@ label {
   position: absolute;
   top: 5px;
   left: 5px;
+  line-height: normal;
   color: var(--md-sys-color-on-secondary);
   background-color: rgba(162, 201, 255, 0.8);
   padding: 6px 8px;
@@ -294,6 +292,13 @@ label {
 .checkbox-label {
   font-size: medium;
 }
+
 .btn {
   position: relative;
 }
+
+@media only screen and (max-width: 767px) { #pages-container { width:300px;  } }
+@media only screen and (min-width: 768px) and (max-width: 991px) { #pages-container { width: 600px; } }
+@media only screen and (min-width: 992px) and (max-width: 1199px) { #pages-container { width: 900px; } }
+@media only screen and (min-width: 1200px) and (max-width: 1399px) { #pages-container { width: 900px; } }
+@media only screen and (min-width: 1399px) { #pages-container { width: 1200px; } }

src/main/resources/static/css/pdfActions.css

@@ -1,8 +1,12 @@
 .pdf-actions_button-container {
   z-index: 4;
-  display: flex;
   opacity: 0;
   transition: opacity 0.1s linear;
+
+  position: absolute !important;
+  bottom: 0px;
+  left: 50%;
+  transform: translate(-50%, 0%);
 }
 
 .pdf-actions_container:hover .pdf-actions_button-container {
@@ -42,17 +46,43 @@
 
 /* "insert pdf" buttons that appear on the right when hover */
 .pdf-actions_insert-file-button-container {
+  display:flex;
+  flex-direction: column;
+  gap: 10px;
   translate: 0 -50%;
-  width: 80px;
   height: 100%;
-
+  width: 100px;
+  padding-left: 30px;
+  padding-right:30px;
+  justify-content: center;
   z-index: 3;
   opacity: 0;
-  transition: opacity 0.2s;
+  transition: opacity 0.4s;
+
 }
 
-.pdf-actions_insert-file-button-container button .material-symbols-rounded {
-  vertical-align: top;
+.pdf-actions_insert-file-button-container.left {
+  left: -50px;
+}
+
+.pdf-actions_insert-file-button-container.right {
+  right: -50px;
+}
+
+html[dir="ltr"] .pdf-actions_insert-file-button-container.right {
+  display: none;
+}
+
+html[dir="rtl"] .pdf-actions_insert-file-button-container.left {
+  display: none;
+}
+
+html[dir="ltr"] .pdf-actions_container:last-child>.pdf-actions_insert-file-button-container.right {
+  display: flex;
+}
+
+html[dir="rtl"] .pdf-actions_container:last-child>.pdf-actions_insert-file-button-container.left {
+  display: flex;
 }
 
 .pdf-actions_insert-file-button-container.left button,
@@ -65,70 +95,11 @@
   vertical-align: sub;
 }
 
-.pdf-actions_insert-file-button {
-  padding: 0;
-  vertical-align: sub;
-}
-
-.pdf-actions_insert-file-button-container.left {
-  left: -20px;
-}
-
-.pdf-actions_insert-file-button-container.right {
-  right: -20px;
-}
-
-html[dir="ltr"] .pdf-actions_insert-file-button-container.right {
-  display: none;
-}
-
-html[dir="rtl"] .pdf-actions_insert-file-button-container.left {
-  display: none;
-}
-
-.pdf-actions_insert-file-button-container.left .pdf-actions_insert-file-button {
-  left: 0;
-  translate: 0 -50%;
-}
-
-.pdf-actions_insert-file-button-container.right .pdf-actions_insert-file-button {
-  right: 0;
-  translate: 0 -50%;
-}
-
-html[dir="ltr"] .pdf-actions_container:last-child>.pdf-actions_insert-file-button-container.right {
-  display: block;
-}
-
-html[dir="rtl"] .pdf-actions_container:last-child>.pdf-actions_insert-file-button-container.left {
-  display: block;
-}
-
 .pdf-actions_insert-file-button-container:hover {
   opacity: 1;
   transition: opacity 0.05s;
 }
 
-.pdf-actions_insert-file-button {
-  position: absolute;
-  top: 50%;
-  right: 50%;
-  translate: 50% -50%;
-  aspect-ratio: 1;
-  border-radius: 100px;
-  z-index: 4;
-}
-
-.pdf-actions_split-file-button {
-  position: absolute;
-  top: 25%;
-  right: 50%;
-  translate: 0 -50%;
-  aspect-ratio: 1;
-  border-radius: 100px;
-  z-index: 3;
-}
-
 .pdf-actions_checkbox {
   position: absolute;
   top: 5px;
@@ -143,13 +114,4 @@ html[dir="rtl"] .pdf-actions_container:last-child>.pdf-actions_insert-file-butto
 
 .hidden {
   display: none;
-}
-.pdf-actions_insert-file-blank-button {
-  position: absolute;
-  top: 75%;
-  right: 50%;
-  translate: 0% -50%;
-  aspect-ratio: 1;
-  border-radius: 100px;
-  z-index: 5;
-}
+}

src/main/resources/static/js/multitool/PdfActionsManager.js

@@ -194,21 +194,21 @@ class PdfActionsManager {
     );
 
     const insertFileButton = document.createElement("button");
-    insertFileButton.classList.add("btn", "btn-primary", "pdf-actions_insert-file-button");
+    insertFileButton.classList.add("btn", "btn-primary");
     moveUp.setAttribute('title', window.translations.addFile);
     insertFileButton.innerHTML = `<span class="material-symbols-rounded">add</span>`;
     insertFileButton.onclick = this.insertFileButtonCallback;
     insertFileButtonContainer.appendChild(insertFileButton);
 
     const splitFileButton = document.createElement("button");
-    splitFileButton.classList.add("btn", "btn-primary", "pdf-actions_split-file-button");
+    splitFileButton.classList.add("btn", "btn-primary");
     splitFileButton.setAttribute('title', window.translations.split);
     splitFileButton.innerHTML = `<span class="material-symbols-rounded">cut</span>`;
     splitFileButton.onclick = this.splitFileButtonCallback;
     insertFileButtonContainer.appendChild(splitFileButton);
 
     const insertFileBlankButton = document.createElement("button");
-    insertFileBlankButton.classList.add("btn", "btn-primary", "pdf-actions_insert-file-blank-button");
+    insertFileBlankButton.classList.add("btn", "btn-primary");
     insertFileBlankButton.setAttribute('title', window.translations.insertPageBreak);
     insertFileBlankButton.innerHTML = `<span class="material-symbols-rounded">insert_page_break</span>`;
     insertFileBlankButton.onclick = this.insertFileBlankButtonCallback;
@@ -225,7 +225,7 @@ class PdfActionsManager {
     );
 
     const insertFileButtonRight = document.createElement("button");
-    insertFileButtonRight.classList.add("btn", "btn-primary", "pdf-actions_insert-file-button");
+    insertFileButtonRight.classList.add("btn", "btn-primary");
     insertFileButtonRight.innerHTML = `<span class="material-symbols-rounded">add</span>`;
     insertFileButtonRight.onclick = () => addFiles();
     insertFileButtonRightContainer.appendChild(insertFileButtonRight);