feat: table header appears repeatedly when paging #541

Co-authored-by: Hufe921 <huangyunfeihufe@hotmail.com>

src/editor/core/command/CommandAdapt.ts

@@ -771,6 +771,7 @@ export class CommandAdapt {
     if (activeControl) return
     const { startIndex, endIndex } = this.range.getRange()
     if (!~startIndex && !~endIndex) return
+    const { defaultTrMinHeight } = this.options.table
     const elementList = this.draw.getElementList()
     let offsetX = 0
     if (elementList[startIndex]?.listId) {
@@ -794,7 +795,7 @@ export class CommandAdapt {
     for (let r = 0; r < row; r++) {
       const tdList: ITd[] = []
       const tr: ITr = {
-        height: this.options.defaultTrMinHeight,
+        height: defaultTrMinHeight,
         tdList
       }
       for (let c = 0; c < col; c++) {
@@ -992,7 +993,7 @@ export class CommandAdapt {
     // 重新计算宽度
     const colgroup = element.colgroup!
     colgroup.splice(curTdIndex, 0, {
-      width: this.options.defaultColMinWidth
+      width: this.options.table.defaultColMinWidth
     })
     const colgroupWidth = colgroup.reduce((pre, cur) => pre + cur.width, 0)
     const width = this.draw.getOriginalInnerWidth()
@@ -1051,7 +1052,7 @@ export class CommandAdapt {
     // 重新计算宽度
     const colgroup = element.colgroup!
     colgroup.splice(curTdIndex, 0, {
-      width: this.options.defaultColMinWidth
+      width: this.options.table.defaultColMinWidth
     })
     const colgroupWidth = colgroup.reduce((pre, cur) => pre + cur.width, 0)
     const width = this.draw.getOriginalInnerWidth()

src/editor/core/draw/Draw.ts

@@ -398,7 +398,10 @@ export class Draw {
   }
 
   public getTdPadding(): IPadding {
-    const { tdPadding, scale } = this.options
+    const {
+      table: { tdPadding },
+      scale
+    } = this.options
     return <IPadding>tdPadding.map(m => m * scale)
   }
 
@@ -1124,8 +1127,13 @@ export class Draw {
 
   public computeRowList(payload: IComputeRowListPayload) {
     const { innerWidth, elementList, isPagingMode = false } = payload
-    const { defaultSize, defaultRowMargin, scale, tdPadding, defaultTabWidth } =
-      this.options
+    const {
+      defaultSize,
+      defaultRowMargin,
+      scale,
+      table: { tdPadding },
+      defaultTabWidth
+    } = this.options
     const defaultBasicRowMarginHeight = this.getDefaultBasicRowMarginHeight()
     const canvas = document.createElement('canvas')
     const ctx = canvas.getContext('2d') as CanvasRenderingContext2D
@@ -1214,7 +1222,10 @@ export class Draw {
           while (tableIndex < elementList.length) {
             const nextElement = elementList[tableIndex]
             if (nextElement.pagingId === element.pagingId) {
-              element.trList!.push(...nextElement.trList!)
+              const nexTrList = nextElement.trList!.filter(
+                tr => !tr.pagingRepeat
+              )
+              element.trList!.push(...nexTrList)
               element.height! += nextElement.height!
               tableIndex++
               combineCount++
@@ -1226,6 +1237,7 @@ export class Draw {
             elementList.splice(i + 1, combineCount)
           }
         }
+        element.pagingIndex = element.pagingIndex ?? 0
         // 计算表格行列
         this.tableParticle.computeRowColInfo(element)
         // 计算表格内元素信息
@@ -1323,11 +1335,12 @@ export class Draw {
               curPagePreHeight += row.height
             }
           }
-          // 当前剩余高度是否能容下当前表格第一行（可拆分）的高度
+          // 当前剩余高度是否能容下当前表格第一行（可拆分）的高度，排除掉表头类型
           const rowMarginHeight = rowMargin * 2 * scale
           if (
             curPagePreHeight + element.trList![0].height! + rowMarginHeight >
-            height
+              height ||
+            (element.pagingIndex !== 0 && element.trList![0].pagingRepeat)
           ) {
             // 无可拆分行则切换至新页
             curPagePreHeight = marginHeight
@@ -1378,6 +1391,14 @@ export class Draw {
               // 追加拆分表格
               const cloneElement = deepClone(element)
               cloneElement.pagingId = pagingId
+              cloneElement.pagingIndex = element.pagingIndex! + 1
+              // 处理分页重复表头
+              const repeatTrList = trList.filter(tr => tr.pagingRepeat)
+              if (repeatTrList.length) {
+                const cloneRepeatTrList = deepClone(repeatTrList)
+                cloneRepeatTrList.forEach(tr => (tr.id = getUUID()))
+                cloneTrList.unshift(...cloneRepeatTrList)
+              }
               cloneElement.trList = cloneTrList
               cloneElement.id = getUUID()
               this.spliceElementList(elementList, i + 1, 0, cloneElement)
@@ -1742,7 +1763,12 @@ export class Draw {
     // 优先绘制高亮元素
     this._drawHighlight(ctx, payload)
     // 绘制元素、下划线、删除线、选区
-    const { scale, tdPadding, group, lineBreak } = this.options
+    const {
+      scale,
+      table: { tdPadding },
+      group,
+      lineBreak
+    } = this.options
     const {
       rowList,
       pageNo,

src/editor/core/draw/particle/table/TableTool.ts

@@ -1,6 +1,7 @@
 import { IElement } from '../../../..'
 import { EDITOR_PREFIX } from '../../../../dataset/constant/Editor'
 import { TableOrder } from '../../../../dataset/enum/table/TableTool'
+import { DeepRequired } from '../../../../interface/Common'
 import { IEditorOption } from '../../../../interface/Editor'
 import { Position } from '../../../position/Position'
 import { Draw } from '../../Draw'
@@ -22,7 +23,7 @@ export class TableTool {
 
   private draw: Draw
   private canvas: HTMLCanvasElement
-  private options: Required<IEditorOption>
+  private options: DeepRequired<IEditorOption>
   private position: Position
   private container: HTMLDivElement
   private toolRowContainer: HTMLDivElement | null
@@ -255,7 +256,7 @@ export class TableTool {
           const trList = element.trList!
           const tr = trList[index] || trList[index - 1]
           // 最大移动高度-向上移动超出最小高度限定，则减少移动量
-          const { defaultTrMinHeight } = this.options
+          const { defaultTrMinHeight } = this.options.table
           if (dy < 0 && tr.height + dy < defaultTrMinHeight) {
             dy = defaultTrMinHeight - tr.height
           }

src/editor/core/position/Position.ts

@@ -19,6 +19,7 @@ import { Draw } from '../draw/Draw'
 import { EditorMode, EditorZone } from '../../dataset/enum/Editor'
 import { deepClone } from '../../utils'
 import { ImageDisplay } from '../../dataset/enum/Common'
+import { DeepRequired } from '../../interface/Common'
 
 export class Position {
   private cursorPosition: IElementPosition | null
@@ -27,7 +28,7 @@ export class Position {
   private floatPositionList: IFloatPosition[]
 
   private draw: Draw
-  private options: Required<IEditorOption>
+  private options: DeepRequired<IEditorOption>
 
   constructor(draw: Draw) {
     this.positionList = []
@@ -114,7 +115,10 @@ export class Position {
       innerWidth,
       zone
     } = payload
-    const { scale, tdPadding } = this.options
+    const {
+      scale,
+      table: { tdPadding }
+    } = this.options
     let x = startX
     let y = startY
     let index = startIndex

src/editor/dataset/constant/Table.ts

@@ -0,0 +1,7 @@
+import { ITableOption } from '../../interface/table/Table'
+
+export const defaultTableOption: Readonly<Required<ITableOption>> = {
+  tdPadding: [0, 5, 5, 5],
+  defaultTrMinHeight: 42,
+  defaultColMinWidth: 40
+}

src/editor/index.ts

@@ -82,6 +82,8 @@ import { ILineBreakOption } from './interface/LineBreak'
 import { defaultLineBreak } from './dataset/constant/LineBreak'
 import { ISeparatorOption } from './interface/Separator'
 import { defaultSeparatorOption } from './dataset/constant/Separator'
+import { ITableOption } from './interface/table/Table'
+import { defaultTableOption } from './dataset/constant/Table'
 
 export default class Editor {
   public command: Command
@@ -97,6 +99,10 @@ export default class Editor {
     data: IEditorData | IElement[],
     options: IEditorOption = {}
   ) {
+    const tableOptions: Required<ITableOption> = {
+      ...defaultTableOption,
+      ...options.table
+    }
     const headerOptions: Required<IHeader> = {
       ...defaultHeaderOption,
       ...options.header
@@ -192,9 +198,6 @@ export default class Editor {
       marginIndicatorColor: '#BABABA',
       margins: [100, 120, 100, 120],
       pageMode: PageMode.PAGING,
-      tdPadding: [0, 5, 5, 5],
-      defaultTrMinHeight: 42,
-      defaultColMinWidth: 40,
       defaultHyperlinkColor: '#0000FF',
       paperDirection: PaperDirection.VERTICAL,
       inactiveAlpha: 0.6,
@@ -206,6 +209,7 @@ export default class Editor {
       contextMenuDisableKeys: [],
       scrollContainerSelector: '',
       ...options,
+      table: tableOptions,
       header: headerOptions,
       footer: footerOptions,
       pageNumber: pageNumberOptions,

src/editor/interface/Editor.ts

@@ -8,7 +8,6 @@ import {
 import { IBackgroundOption } from './Background'
 import { ICheckboxOption } from './Checkbox'
 import { IRadioOption } from './Radio'
-import { IPadding } from './Common'
 import { IControlOption } from './Control'
 import { ICursorOption } from './Cursor'
 import { IFooter } from './Footer'
@@ -23,6 +22,7 @@ import { ITitleOption } from './Title'
 import { IWatermark } from './Watermark'
 import { IZoneOption } from './Zone'
 import { ISeparatorOption } from './Separator'
+import { ITableOption } from './table/Table'
 
 export interface IEditorData {
   header?: IElement[]
@@ -60,9 +60,6 @@ export interface IEditorOption {
   marginIndicatorColor?: string
   margins?: IMargin
   pageMode?: PageMode
-  tdPadding?: IPadding
-  defaultTrMinHeight?: number
-  defaultColMinWidth?: number
   defaultHyperlinkColor?: string
   paperDirection?: PaperDirection
   inactiveAlpha?: number
@@ -73,6 +70,7 @@ export interface IEditorOption {
   contextMenuDisableKeys?: string[]
   scrollContainerSelector?: string
   wordBreak?: WordBreak
+  table?: ITableOption
   header?: IHeader
   footer?: IFooter
   pageNumber?: IPageNumber

src/editor/interface/Element.ts

@@ -69,6 +69,7 @@ export interface ITableElement {
   tableId?: string
   conceptId?: string
   pagingId?: string // 用于区分拆分的表格同属一个源表格
+  pagingIndex?: number // 拆分的表格索引
 }
 
 export type ITable = ITableAttr & ITableElement

src/editor/interface/table/Table.ts

@@ -0,0 +1,7 @@
+import { IPadding } from '../Common'
+
+export interface ITableOption {
+  tdPadding?: IPadding
+  defaultTrMinHeight?: number
+  defaultColMinWidth?: number
+}

src/editor/interface/table/Tr.ts

@@ -5,4 +5,5 @@ export interface ITr {
   height: number
   tdList: ITd[]
   minHeight?: number
+  pagingRepeat?: boolean // 在各页顶端以标题行的形式重复出现
 }

src/editor/utils/element.ts

@@ -148,15 +148,13 @@ export function formatElementList(
       const tableId = getUUID()
       el.id = tableId
       if (el.trList) {
+        const { defaultTrMinHeight } = editorOptions.table
         for (let t = 0; t < el.trList.length; t++) {
           const tr = el.trList[t]
           const trId = getUUID()
           tr.id = trId
-          if (
-            !tr.minHeight ||
-            tr.minHeight < editorOptions.defaultTrMinHeight
-          ) {
-            tr.minHeight = editorOptions.defaultTrMinHeight
+          if (!tr.minHeight || tr.minHeight < defaultTrMinHeight) {
+            tr.minHeight = defaultTrMinHeight
           }
           if (tr.height < tr.minHeight) {
             tr.height = tr.minHeight