Hidden Rows and Columns - Tcpdf and Mpdf #3945
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Tcpdf issues warnings when processing hidden rows. Some time ago, Mpdf was having problems in the same situation; this was resolved by not writing out hidden rows in the html which Mpdf uses to generate its file. The same solution can be easily applied to Tcpdf. Neither Tcpdf nor Mpdf handles hidden columns. Dompdf doesn't have a problem with either rows or columns. At any rate, the solution for Tcpdf/Mpdf is to not write out the data in the hidden columns. It is more difficult to implement this for columns than for rows, but this PR should do the trick. Html writer generally uses `display:none` for the data in suppressed columns. This works, but is technically incorrect - the "approved" method is `visibility:collapse` on the col element. However, Firefox doesn't handle that correctly (open bug was filed over a decade ago), and, since all browsers seem to handle the existing implementation, it is left alone. Among other considerations, this PR is a necessary precursor for supporting printArea in Html/Pdf should we decide to do that (issue PHPOffice#3941). Writer/Html protected property `$isMPdf` is deprecated with this PR in favor of testing for `instanceof Mpdf`.
I am tired of complexity warnings for non-complex code.
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Tcpdf issues warnings when processing hidden rows. Some time ago, Mpdf was having problems in the same situation; this was resolved by not writing out hidden rows in the html which Mpdf uses to generate its file. The same solution can be easily applied to Tcpdf.
Neither Tcpdf nor Mpdf handles hidden columns. Dompdf doesn't have a problem with either rows or columns. At any rate, the solution for Tcpdf/Mpdf is to not write out the data in the hidden columns. It is more difficult to implement this for columns than for rows, but this PR should do the trick.
Html writer generally uses
display:nonefor the data in suppressed columns. This works, but is technically incorrect - the "approved" method isvisibility:collapseon the col element. However, Firefox doesn't handle that correctly (open bug was filed over a decade ago), and, since all browsers seem to handle the existing implementation, it is left alone.Among other considerations, this PR is a necessary precursor for supporting printArea in Html/Pdf should we decide to do that (issue #3941).
Writer/Html protected property
$isMPdfis deprecated with this PR in favor of testing forinstanceof Mpdf.This is:
Checklist:
Why this change is needed?
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If this is a bugfix or a new feature, and there are no existing Issues, then please also create an issue that will make it easier to track progress with this PR.