Grid

// xxx.ets
@Entry
@Component
struct GridExample {
  @State numbers1: String[] = ['0', '1', '2', '3', '4']
  @State numbers2: String[] = ['0', '1','2','3','4','5']

  layoutOptions3: GridLayoutOptions = {
    regularSize: [1, 1],
    onGetRectByIndex: (index: number) => {
      if (index == 0)
        return [0, 0, 1, 1]
      else if(index==1)
        return [0, 1, 2, 2]
      else if(index==2)
        return [0 ,3 ,3 ,3]
      else if(index==3)
        return [3, 0, 3, 3]
      else if(index==4)
        return [4, 3, 2, 2]
      else
        return [5, 5, 1, 1]
    }
  }

  build() {
    Column({ space: 5 }) {
      Grid() {
        ForEach(this.numbers1, (day: string) => {
          ForEach(this.numbers1, (day: string) => {
            GridItem() {
              Text(day)
                .fontSize(16)
                .backgroundColor(0xF9CF93)
                .width('100%')
                .height('100%')
                .textAlign(TextAlign.Center)
            }
          }, (day: string) => day)
        }, (day: string) => day)
      }
      .columnsTemplate('1fr 1fr 1fr 1fr 1fr')
      .rowsTemplate('1fr 1fr 1fr 1fr 1fr')
      .columnsGap(10)
      .rowsGap(10)
      .width('90%')
      .backgroundColor(0xFAEEE0)
      .height(300)

      Text('GridLayoutOptions的使用：onGetRectByIndex。').fontColor(0xCCCCCC).fontSize(9).width('90%')

      Grid(undefined, this.layoutOptions3) {
        ForEach(this.numbers2, (day: string) => {
          GridItem() {
            Text(day)
              .fontSize(16)
              .backgroundColor(0xF9CF93)
              .width('100%')
              .height("100%")
              .textAlign(TextAlign.Center)
          }
          .height("100%")
          .width('100%')
        }, (day: string) => day)
      }
      .columnsTemplate('1fr 1fr 1fr 1fr 1fr 1fr')
      .rowsTemplate('1fr 1fr 1fr 1fr 1fr 1fr')
      .columnsGap(10)
      .rowsGap(10)
      .width('90%')
      .backgroundColor(0xFAEEE0)
      .height(300)
    }.width('100%').margin({ top: 5 })
  }
}

// xxx.ets
@Entry
@Component
struct GridExample {
  @State numbers: String[] = ['0', '1', '2', '3', '4']
  scroller: Scroller = new Scroller()
  @State Position: number = 0 //0代表滚动到grid顶部，1代表中间值，2代表滚动到grid底部。

  build() {
    Column({ space: 5 }) {
      Text('scroll').fontColor(0xCCCCCC).fontSize(9).width('90%')
      Grid(this.scroller) {
        ForEach(this.numbers, (day: string) => {
          ForEach(this.numbers, (day: string) => {
            GridItem() {
              Text(day)
                .fontSize(16)
                .backgroundColor(0xF9CF93)
                .width('100%')
                .height(80)
                .textAlign(TextAlign.Center)
            }
          }, (day: string) => day)
        }, (day: string) => day)
      }
      .columnsTemplate('1fr 1fr 1fr 1fr 1fr')
      .columnsGap(10)
      .rowsGap(10)
      .friction(0.6)
      .enableScrollInteraction(true)
      .supportAnimation(false)
      .multiSelectable(false)
      .edgeEffect(EdgeEffect.Spring)
      .scrollBar(BarState.On)
      .scrollBarColor(Color.Grey)
      .scrollBarWidth(4)
      .width('90%')
      .backgroundColor(0xFAEEE0)
      .height(300)
      .onScrollIndex((first: number) => {
        console.info(first.toString())
      })
      .onScrollBarUpdate((index: number, offset: number) => {
        console.info("XXX" + 'Grid onScrollBarUpdate,index : ' + index.toString() + ",offset" + offset.toString())
        return { totalOffset: (index / 5) * (80 + 10) - offset, totalLength: 80 * 5 + 10 * 4 }
      })  //只适用于当前示例代码数据源，如果数据源有变化，则需要修改该部分代码，或者删掉此属性
      .onScroll((first: number, last: number) => {
        console.info(first.toString())
        console.info(last.toString())
      })
      .onScrollStart(() => {
        console.info("XXX" + "Grid onScrollStart")
      })
      .onScrollStop(() => {
        console.info("XXX" + "Grid onScrollStop")
      })
      .onReachStart(() => {
        this.Position = 0
        console.info("XXX" + "Grid onReachStart")
      })
      .onReachEnd(() => {
        this.Position = 2
        console.info("XXX" + "Grid onReachEnd")
      })

      Button('next page')
        .onClick(() => { // 点击后滑到下一页
          this.scroller.scrollPage({ next: true })
        })
    }.width('100%').margin({ top: 5 })
  }
}

// xxx.ets
@Entry
@Component
struct GridExample {
  @State numbers: String[] = ['0', '1', '2', '3', '4']
  scroller: Scroller = new Scroller()
  layoutOptions1: GridLayoutOptions = {
    regularSize: [1, 1],        // 只支持[1, 1]
    irregularIndexes: [0, 6],   // 索引为0和6的GridItem占用一行
  }

  layoutOptions2: GridLayoutOptions = {
    regularSize: [1, 1],
    irregularIndexes: [0, 7],   // 索引为0和7的GridItem占用的列数由onGetIrregularSizeByIndex指定
    onGetIrregularSizeByIndex: (index: number) => {
      if (index === 0) {
        return [1, 5]
      }
      return [1, index % 6 + 1]
    }
  }

  build() {
    Column({ space: 5 }) {
      Grid(this.scroller, this.layoutOptions1) {
        ForEach(this.numbers, (day: string) => {
          ForEach(this.numbers, (day: string) => {
            GridItem() {
              Text(day)
                .fontSize(16)
                .backgroundColor(0xF9CF93)
                .width('100%')
                .height(80)
                .textAlign(TextAlign.Center)
            }.selectable(false)
          }, (day: string) => day)
        }, (day: string) => day)
      }
      .columnsTemplate('1fr 1fr 1fr 1fr 1fr')
      .columnsGap(10)
      .rowsGap(10)
      .multiSelectable(true)
      .scrollBar(BarState.Off)
      .width('90%')
      .backgroundColor(0xFAEEE0)
      .height(300)

      Text('scroll').fontColor(0xCCCCCC).fontSize(9).width('90%')
      // 不使用scroll，需要undefined占位
      Grid(undefined, this.layoutOptions2) {
        ForEach(this.numbers, (day: string) => {
          ForEach(this.numbers, (day: string) => {
            GridItem() {
              Text(day)
                .fontSize(16)
                .backgroundColor(0xF9CF93)
                .width('100%')
                .height(80)
                .textAlign(TextAlign.Center)
            }
          }, (day: string) => day)
        }, (day: string) => day)
      }
      .columnsTemplate('1fr 1fr 1fr 1fr 1fr')
      .columnsGap(10)
      .rowsGap(10)
      .scrollBar(BarState.Off)
      .width('90%')
      .backgroundColor(0xFAEEE0)
      .height(300)
    }.width('100%').margin({ top: 5 })
  }
}

@Entry
@Component
struct GridExample {
  @State colors: number[] = [0xFFC0CB, 0xDA70D6, 0x6B8E23, 0x6A5ACD, 0x00FFFF, 0x00FF7F]
  @State numbers: number[] = []
  @State translateY: number = 0
  private scroller: Scroller = new Scroller()
  private gridScroller: Scroller = new Scroller()
  private touchDown: boolean = false
  private listTouchDown: boolean = false
  private scrolling: boolean = false

  aboutToAppear() {
    for (let i = 0; i < 100; i++) {
      this.numbers.push(i)
    }
  }

  build() {
    Stack() {
      Column() {
        Row() {
          Text('Head')
        }

        Column() {
          List({ scroller: this.scroller }) {
            ListItem() {
              Grid() {
                GridItem() {
                  Text('GoodsTypeList1')
                }
                .backgroundColor(this.colors[0])
                .columnStart(0)
                .columnEnd(1)

                GridItem() {
                  Text('GoodsTypeList2')
                }
                .backgroundColor(this.colors[1])
                .columnStart(0)
                .columnEnd(1)

                GridItem() {
                  Text('GoodsTypeList3')
                }
                .backgroundColor(this.colors[2])
                .columnStart(0)
                .columnEnd(1)

                GridItem() {
                  Text('GoodsTypeList4')
                }
                .backgroundColor(this.colors[3])
                .columnStart(0)
                .columnEnd(1)

                GridItem() {
                  Text('GoodsTypeList5')
                }
                .backgroundColor(this.colors[4])
                .columnStart(0)
                .columnEnd(1)
              }
              .scrollBar(BarState.Off)
              .columnsGap(15)
              .rowsGap(10)
              .rowsTemplate('1fr 1fr 1fr 1fr 1fr')
              .columnsTemplate('1fr')
              .width('100%')
              .height(200)
            }

            ListItem() {
              Grid(this.gridScroller) {
                ForEach(this.numbers, (item: number) => {
                  GridItem() {
                    Text(item + '')
                      .fontSize(16)
                      .backgroundColor(0xF9CF93)
                      .width('100%')
                      .height('100%')
                      .textAlign(TextAlign.Center)
                  }
                  .width('100%')
                  .height(40)
                  .shadow({ radius: 10, color: '#909399', offsetX: 1, offsetY: 1 })
                  .borderRadius(10)
                  .translate({ x: 0, y: this.translateY })
                }, (item: string) => item)
              }
              .columnsTemplate('1fr 1fr')
              .friction(0.3)
              .columnsGap(15)
              .rowsGap(10)
              .scrollBar(BarState.Off)
              .width('100%')
              .height('100%')
              .layoutDirection(GridDirection.Column)
              .nestedScroll({
                scrollForward: NestedScrollMode.PARENT_FIRST,
                scrollBackward: NestedScrollMode.SELF_FIRST
              })
              .onTouch((event: TouchEvent) => {
                if (event.type == TouchType.Down) {
                  this.listTouchDown = true
                } else if (event.type == TouchType.Up) {
                  this.listTouchDown = false
                }
              })
            }
          }
          .scrollBar(BarState.Off)
          .edgeEffect(EdgeEffect.None)
          .onTouch((event: TouchEvent) => {
            if (event.type == TouchType.Down) {
              this.touchDown = true
            } else if (event.type == TouchType.Up) {
              this.touchDown = false
            }
          })
          .onScrollFrameBegin((offset: number, state: ScrollState) => {
            if (this.scrolling && offset > 0) {
              let newOffset = this.scroller.currentOffset().yOffset
              if (newOffset >= 590) {
                this.gridScroller.scrollBy(0, offset)
                return { offsetRemain: 0 }
              } else if (newOffset + offset > 590) {
                this.gridScroller.scrollBy(0, newOffset + offset - 590)
                return { offsetRemain: 590 - newOffset }
              }
            }
            return { offsetRemain: offset }
          })
          .onScrollStart(() => {
            if (this.touchDown && !this.listTouchDown) {
              this.scrolling = true
            }
          })
          .onScrollStop(() => {
            this.scrolling = false
          })
        }
        .width('100%')
        .height('100%')
        .padding({ left: 10, right: 10 })
      }

      Row() {
        Text('Top')
          .width(30)
          .height(30)
          .borderRadius(50)
      }
      .padding(5)
      .borderRadius(50)
      .backgroundColor('#ffffff')
      .shadow({ radius: 10, color: '#909399', offsetX: 1, offsetY: 1 })
      .margin({ right: 22, bottom: 15 })
      .onClick(() => {
        this.scroller.scrollTo({ xOffset: 0, yOffset: 0 })
        this.gridScroller.scrollTo({ xOffset: 0, yOffset: 0 })
      })
    }
    .align(Alignment.BottomEnd)
  }
}

@Entry
@Component
struct GridExample {
  @State numbers: string[] = []
  scroller: Scroller = new Scroller()
  @State text: string = 'drag'

  @Builder pixelMapBuilder() { //拖拽过程样式
    Column() {
      Text(this.text)
        .fontSize(16)
        .backgroundColor(0xF9CF93)
        .width(80)
        .height(80)
        .textAlign(TextAlign.Center)
    }
  }

  aboutToAppear() {
    for (let i = 1;i <= 15; i++) {
      this.numbers.push(i + '')
    }
  }

  changeIndex(index1: number, index2: number) { //交换数组位置
    let temp: string;
    temp = this.numbers[index1];
    this.numbers[index1] = this.numbers[index2];
    this.numbers[index2] = temp;
  }

  build() {
    Column({ space: 5 }) {
      Grid(this.scroller) {
        ForEach(this.numbers, (day: string) => {
          GridItem() {
            Text(day)
              .fontSize(16)
              .backgroundColor(0xF9CF93)
              .width(80)
              .height(80)
              .textAlign(TextAlign.Center)
          }
        })
      }
      .columnsTemplate('1fr 1fr 1fr')
      .columnsGap(10)
      .rowsGap(10)
      .onScrollIndex((first: number) => {
        console.info(first.toString())
      })
      .width('90%')
      .backgroundColor(0xFAEEE0)
      .height(300)
      .editMode(true) //设置Grid是否进入编辑模式，进入编辑模式可以拖拽Grid组件内部GridItem
      .onItemDragStart((event: ItemDragInfo, itemIndex: number) => { //第一次拖拽此事件绑定的组件时，触发回调。
        this.text = this.numbers[itemIndex]
        return this.pixelMapBuilder() //设置拖拽过程中显示的图片。
      })
      .onItemDrop((event: ItemDragInfo, itemIndex: number, insertIndex: number, isSuccess: boolean) => { //绑定此事件的组件可作为拖拽释放目标，当在本组件范围内停止拖拽行为时，触发回调。
        // isSuccess=false时，说明drop的位置在grid外部；insertIndex > length时，说明有新增元素的事件发生
        if (!isSuccess || insertIndex >= this.numbers.length) {
          return
        }
        console.info('beixiang' + itemIndex + '', insertIndex + '') //itemIndex拖拽起始位置，insertIndex拖拽插入位置
        this.changeIndex(itemIndex, insertIndex)
      })
    }.width('100%').margin({ top: 5 })
  }
}

@Entry
@Component
struct GridExample {
  @State numbers: string[] = []

  aboutToAppear() {
    for (let i = 1; i <= 30; i++) {
      this.numbers.push(i + '')
    }
  }

  build() {
    Scroll() {
      Column({ space: 5 }) {
        Blank()
        Text('rowsTemplate、columnsTemplate都不设置layoutDirection、maxcount、minCount、cellLength才生效')
          .fontSize(15).fontColor(0xCCCCCC).width('90%')
        Grid() {
          ForEach(this.numbers, (day: string) => {
            GridItem() {
              Text(day).fontSize(16).backgroundColor(0xF9CF93)
            }.width(40).height(80).borderWidth(2).borderColor(Color.Red)
          }, (day: string) => day)
        }
        .height(300)
        .columnsGap(10)
        .rowsGap(10)
        .backgroundColor(0xFAEEE0)
        .maxCount(6)
        .minCount(2)
        .cellLength(0)
        .layoutDirection(GridDirection.Row)
      }
      .width('90%').margin({ top: 5, left: 5, right: 5 })
      .align(Alignment.Center)
    }
  }
}