feat: copy entire line when cursor is inside

src/editor/core/event/handlers/copy.ts

@@ -4,10 +4,10 @@ import { CanvasEvent } from '../CanvasEvent'
 export function copy(host: CanvasEvent) {
   const draw = host.getDraw()
   const rangeManager = draw.getRange()
-  const { startIndex, endIndex } = rangeManager.getRange()
-  if (startIndex !== endIndex) {
-    const options = draw.getOptions()
-    const elementList = draw.getElementList()
-    writeElementList(elementList.slice(startIndex + 1, endIndex + 1), options)
-  }
+  // 光标闭合时复制整行
+  const copyElementList = rangeManager.getIsCollapsed()
+    ? rangeManager.getRangeRowElementList()
+    : rangeManager.getSelectionElementList()
+  if (!copyElementList?.length) return
+  writeElementList(copyElementList, draw.getOptions())
 }