Permit Max Column for Row Breaks #3345
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Fix PHPOffice#3143. Page break was dropped. Difference between good and bad was the use of attribute `max` in `brk` tag in the good spreadsheet. However, `max` was *not* required in a similar spreadsheet. So the reason for the problem isn't completely explained. Nevertheless, it can't really hurt to capture the `max` value on read (if present) and generate it on write. This resolves the issue. User is also permitted to specify max column when setting a row break programatically. I am not yet in position to document when that might be a good idea.
Not a problem on my Windows system.
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I have tested further, using PhpSpreadsheet code to emulate the problem spreadsheet, and I am quite certain that the only difference between a spreadsheet which appears as expected and one which doesn't is the |
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BTW, LibreOffice handles the printing correctly whether or not |
Change is necessitated by probable Excel bug.
I kind of shoe-horned it in. Better to create a new PageBreak class, which will make it easier to accomodate any future surprises about page break handling. The only difficulty with the new approach is making sure getBreaks maintains backwards compatibility. New tests will ensure that.
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Fix PHPOffice#1275, which had been closed as stale, and is now reopened pending the implementation of this PR. If there is a page break inside a defined print area, Excel may not render the print correctly unless the xml `brk` tag contains a `max` attribute. Libre Office renders it correctly. This seems like a bug in Excel (https://learn.microsoft.com/en-us/openspecs/office_standards/ms-oe376/b32ae11b-dee7-4dcb-9b46-a0feb32ce94f states that Office ignores min and max). PR PHPOffice#3345 (issue PHPOffice#3143) already addressed this problem by allowing the user to explicitly specify a `max` property in the PageBreak object. This PR eliminates the need for the user to make use of that kludge, by adding `max` to the xml whenever a page break is specified on a sheet with a defined print area. Xlsx Reader will now ignore the `max` attribute for row breaks, since it is no longer needed; it already ignores it for column breaks. The user may still set the `max` property if desired, just in case the new treatment is not adequate (I have not found a case where that is true). Two existing unit tests are very marginally changed because of this PR.
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Fix #3143. Page break was dropped. Difference between good and bad was the use of attribute
maxinbrktag in the good spreadsheet. However,maxwas not required in a similar spreadsheet. So the reason for the problem isn't completely explained, although the likeliest explanation seems to be an Excel bug. Nevertheless, it can't really hurt to capture themaxvalue on read (if present) and generate it on write. This resolves the issue. User is also permitted to specify max column when setting a row break programatically. Documentation is updated.This is:
Checklist:
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