优化布局和交互

src/utils.ts

@@ -27,6 +27,26 @@ export const VARIABLE_MAPPING_USE_ROW_INDEX = '__use_row_index__';
 
 export const VARIABLE_MAPPING_ROW_INDEX_LABEL = '数据序号';
 
+/** 粘贴副本时相对原位置的偏移 (mm) */
+export const PASTE_ELEMENT_OFFSET_MM = 2;
+
+/** 深拷贝元素并生成新 id，用于复制/粘贴 */
+export function cloneTemplateElementsForPaste(
+  elements: TemplateElement[],
+  pasteRepeat: number
+): TemplateElement[] {
+  const offset = PASTE_ELEMENT_OFFSET_MM * Math.max(1, pasteRepeat);
+  const stamp = Date.now();
+  return elements.map((element, index) => {
+    const cloned = JSON.parse(JSON.stringify(element)) as TemplateElement;
+    cloned.id = `${element.type}_${stamp}_${index}`;
+    cloned.name = `${element.name} 副本`;
+    cloned.x = Math.round((element.x + offset) * 10) / 10;
+    cloned.y = Math.round((element.y + offset) * 10) / 10;
+    return cloned;
+  });
+}
+
 export function toDataSourceMeta(data: ImportData): DataSourceMeta {
   return {
     fileName: data.fileName,