可拖动调整大小的面板

packages/editor-app/src/styles/App.css

@@ -63,17 +63,11 @@
 
 .sidebar-left,
 .sidebar-right {
-  width: 250px;
+  height: 100%;
   background-color: #252526;
-  border-right: 1px solid #3e3e3e;
   overflow: hidden;
 }
 
-.sidebar-right {
-  border-right: none;
-  border-left: 1px solid #3e3e3e;
-}
-
 .sidebar-left h3,
 .sidebar-right h3 {
   font-size: 14px;
@@ -91,16 +85,13 @@
 }
 
 .main-content {
-  display: flex;
-  flex-direction: column;
-  flex: 1;
+  height: 100%;
   overflow: hidden;
 }
 
 .viewport {
-  flex: 1;
+  height: 100%;
   background-color: #1e1e1e;
-  border-bottom: 1px solid #3e3e3e;
   padding: 12px;
   display: flex;
   flex-direction: column;
@@ -113,9 +104,8 @@
 }
 
 .bottom-panel {
-  height: 200px;
+  height: 100%;
   background-color: #252526;
-  padding: 12px;
   overflow-y: auto;
 }
 

packages/editor-app/src/styles/ResizablePanel.css

@@ -0,0 +1,77 @@
+.resizable-panel {
+  display: flex;
+  width: 100%;
+  height: 100%;
+  position: relative;
+}
+
+.resizable-panel-horizontal {
+  flex-direction: row;
+}
+
+.resizable-panel-vertical {
+  flex-direction: column;
+}
+
+.panel-section {
+  overflow: hidden;
+  position: relative;
+}
+
+.resizer {
+  background: #252526;
+  position: relative;
+  z-index: 10;
+  transition: background-color 0.2s ease;
+}
+
+.resizer:hover {
+  background: #094771;
+}
+
+.resizer-horizontal {
+  width: 4px;
+  cursor: col-resize;
+  flex-shrink: 0;
+}
+
+.resizer-vertical {
+  height: 4px;
+  cursor: row-resize;
+  flex-shrink: 0;
+}
+
+.resizer-handle {
+  position: absolute;
+  background: transparent;
+}
+
+.resizer-horizontal .resizer-handle {
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  width: 12px;
+  height: 40px;
+}
+
+.resizer-vertical .resizer-handle {
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  width: 40px;
+  height: 12px;
+}
+
+.resizer:active {
+  background: #0e6caa;
+}
+
+body.resizing {
+  cursor: col-resize !important;
+  user-select: none !important;
+}
+
+body.resizing-vertical {
+  cursor: row-resize !important;
+  user-select: none !important;
+}