scrollToChild 滚动到能够显示子元素的位置

scrollToChild

类型: MethodDeclaration

所属类: WindowElement

定义位置: ui.ts

描述

滚动到能够显示子元素的位置

参数 element: 子元素

参数

参数名	类型	描述	默认值
element	UIElement	-	-

返回值

类型: void

源代码

位置: 第 5800 行

public scrollToChild(element: UIElement): void {
    const index = this.children.indexOf(element)
    if (index !== -1) {
      switch (this.layout) {
        case 'normal': {
          const left = element.x - this.x
          const top = element.y - this.y
          const right = left + element.width
          const bottom = top + element.height
          this.scrollX = Math.clamp(this.scrollX, right - this.width, left)
          this.scrollY = Math.clamp(this.scrollY, bottom - this.height, top)
          break
        }
        case 'horizontal-grid': {
          const cols = this.getVisibleGridColumns()
          if (Number.isFinite(cols)) {
            const rows = Math.floor(index / cols)
            const y = rows * (this.gridHeight + this.gridGapY) + this.paddingY
            this.scrollY = Math.clamp(this.scrollY, y + this.gridHeight - this.height, y)
          }
          break
        }
        case 'vertical-grid': {
          const rows = this.getVisibleGridRows()
          if (Number.isFinite(rows)) {
            const cols = Math.floor(index / rows)
            const x = cols * (this.gridWidth + this.gridGapX) + this.paddingX
            this.scrollX = Math.clamp(this.scrollX, x + this.gridWidth - this.width, x)
          }
          break
        }
      }
    }
  }

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文档生成时间：2025/7/21 20:53:39