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td:nth-child() counts grid columns, so a colspan or rowspan before the cell shifts it #528
Description
Part of #520 (step 8).
td:nth-child() and th:nth-child() are matched against $this->mpdf->col, the cell's column in the grid, not its position among the cells of its row. td:first-child is not supported at all, even in tables.
Measured on gravitypdf at b6a07921, PHP 8.5.4.
| Rule | Row | Browser | mPDF |
|---|---|---|---|
td:nth-child(2) {color:green} |
<td colspan="2">a</td><td>X</td> |
X green | X black |
td:nth-child(3) {color:red} |
<td colspan="2">a</td><td>X</td> |
X black | X red |
td:nth-child(1) {color:green} |
<td>X</td>, in the row under a rowspan="2" cell |
X green | X black |
td:first-child {color:green} |
<td>X</td><td>b</td> |
X green | X black |
Fix. Count the cells opened in the current row inside Td, and match td/th:nth-child against that count. Treat :first-child on td, th and tr as :nth-child(1). This needs no stack of open elements; #538 later counts every element this way.
Tests. A colspan and a rowspan before the cell, header and footer rows, and :first-child.
Related: #526.
Activity