The Candid Startup
    Preparing search index...

    Interface ItemOffsetMapping

    Interface used to determine the size and positioning offset for items in a single dimension.

    interface ItemOffsetMapping {
        itemOffset(itemIndex: number): number;
        itemSize(itemIndex: number): number;
        offsetToItem(offset: number): [itemIndex: number, startOffset: number];
    }

    Implemented by

    Index

    Methods

    itemOffset itemSize offsetToItem

    Methods

    • Offset from start of container to specified item

      itemOffset(n) should be equal to Sum{i:0->n-1}(itemSize(i))

      To efficiently support large containers, cost should be O(logn) or better.

      Parameters

      • itemIndex: number

      Returns number

    • Given an offset, return the index of the item that intersects that offset, together with the start offset of that item

      Parameters

      • offset: number

      Returns [itemIndex: number, startOffset: number]

    Settings

    Member Visibility

    On This Page

    Methods