Add support for variable row heights #2384
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amanmahajan7
commented
May 3, 2021
| @@ -94,20 +94,79 @@ export function useViewportRows<R>({ | |||
| } | |||
| }, [expandedGroupIds, groupedRows, rawRows]); | |||
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| const { totalRowHeight, getRowTop, getRowHeight, findRowIdx } = useMemo(() => { | |||
| if (typeof rowHeight === 'number') { | |||
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This change does not impact the performance if rowHeight is a number.
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| const rowPositions: ({ height: number; top: number })[] = []; | ||
| let totalRowHeight = 0; | ||
| // Calcule the height of all the rows upfront. This can cause performance issues |
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I did not notice any performance issues even on a large grid. Tried editing, colspan and a few other features. This can be slow if rowHeight itself is expensive
| return rowPositions[rowIdx].top; | ||
| }, | ||
| getRowHeight: (rowIdx: number) => rowPositions[rowIdx].height, | ||
| findRowIdx(offset: number) { |
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Use binary search on a sorted array.
| @@ -98,13 +98,13 @@ function createRows(): readonly Row[] { | |||
| for (let i = 1; i < 10000; i++) { | |||
| rows.push({ | |||
| id: i, | |||
| year: 2015 + faker.random.number(3), | |||
| year: 2015 + faker.datatype.number(3), | |||
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faker.random is deprecated
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Working on tests but ready for review. |
amanmahajan7
changed the title
nstepien
reviewed
May 4, 2021
Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com>
Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com>
nstepien
reviewed
May 4, 2021
Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com>
nstepien
previously approved these changes
May 4, 2021
added 2 commits
May 4, 2021 11:14
nstepien
approved these changes
May 4, 2021
gernotkogler
pushed a commit
to Garaio-REM/react-data-grid
that referenced
this pull request
May 13, 2021
* Change rowHeight to a function to support variable row heights * Fix hooks order * Remove memo * Add a comment * Fix tests * Fix types * Cleanup * Use a single array * Fix pageup/pagedown * Update src/DataGrid.tsx Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com> * Update src/hooks/useViewportRows.ts Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com> * newScrollTop -> nextRowY * move/deduplicate getRowTop(rowIdx) and getRowHeight(rowIdx) calls outside the ifs * Validate rowIdx * Update src/hooks/useViewportRows.ts Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com> * Fix typo * Add rowHeight tests * typo Co-authored-by: Nicolas Stepien <567105+nstepien@users.noreply.github.com>
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rowHeightto anumber/functionto support variable row heightsrowHeightis a numberI think this can really useful specially on readonly grids