perf: 代码和样式优化

src/views/Editor/Thumbnails/index.vue

@@ -17,15 +17,13 @@
     >
       <template #item="{ element, index }">
         <div
-          class="thumbnail-wrapper"
-          :class="{ 'active': slideIndex === index }"
+          class="thumbnail-item"
+          :class="{ 'selected': slideIndex === index }"
           @mousedown="changSlideIndex(index)"
           v-contextmenu="contextmenusThumbnailItem"
         >
-          <div class="slide-index">{{ fillDigit(index + 1, 2) }}</div>
-          <div class="thumbnail">
-            <ThumbnailSlide :slide="element" :size="120" />
-          </div>
+          <div class="label">{{ fillDigit(index + 1, 2) }}</div>
+          <ThumbnailSlide class="thumbnail" :slide="element" :size="120" />
         </div>
       </template>
     </Draggable>
@@ -194,7 +192,7 @@ export default defineComponent({
   flex: 1;
   overflow: auto;
 }
-.thumbnail-wrapper {
+.thumbnail-item {
   display: flex;
   justify-content: center;
   align-items: center;
@@ -204,8 +202,8 @@ export default defineComponent({
     outline: 1px solid rgba($color: $themeColor, $alpha: .15);
   }
 
-  &.active {
-    .slide-index {
+  &.selected {
+    .label {
       color: $themeColor;
     }
     .thumbnail {
@@ -213,11 +211,7 @@ export default defineComponent({
     }
   }
 }
-.thumbnail {
-  width: 120px;
-  height: 67.5px;
-}
-.slide-index {
+.label {
   font-size: 12px;
   color: #999;
   width: 20px;

src/views/Editor/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="hamster-ppt-editor">
+  <div class="pptist-editor">
     <EditorHeader class="layout-header" />
     <div class="layout-content">
       <Thumbnails class="layout-content-left" />
@@ -41,7 +41,7 @@ export default defineComponent({
 </script>
 
 <style lang="scss" scoped>
-.hamster-ppt-editor {
+.pptist-editor {
   height: 100%;
 }
 .layout-header {

src/views/Screen/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="hamster-ppt-screen">
+  <div class="pptist-screen">
     <div 
       class="slide-list"
       @mousewheel="$event => mousewheelListener($event)"
@@ -268,7 +268,7 @@ export default defineComponent({
 </script>
 
 <style lang="scss" scoped>
-.hamster-ppt-screen {
+.pptist-screen {
   width: 100%;
   height: 100%;
   position: relative;

src/views/components/ThumbnailSlide/index.vue

@@ -6,7 +6,7 @@
     }"
   >
     <div 
-      class="elements-wrapper"
+      class="elements"
       :style="{
         width: VIEWPORT_SIZE + 'px',
         height: VIEWPORT_SIZE * VIEWPORT_ASPECT_RATIO + 'px',
@@ -68,7 +68,7 @@ export default defineComponent({
   background-color: #fff;
   overflow: hidden;
 }
-.elements-wrapper {
+.elements {
   transform-origin: 0 0;
 }
 .background {