Add support for Rounded Corners in Charts

[bridgeplayr]

This is:

- [ ] a bug report
- [x] a feature request
- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpspreadsheet or https://gitter.im/PHPOffice/PhpSpreadsheet)

What is the expected behavior?

What is the current behavior?

supported in Excel; not supported in PHPSS

What are the steps to reproduce?

Please provide a Minimal, Complete, and Verifiable example of code that exhibits the issue without relying on an external Excel file or a web server:

<?php

require __DIR__ . '/vendor/autoload.php';

// Create new Spreadsheet object
$spreadsheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();

// add code that show the issue here...

If this is an issue with reading a specific spreadsheet file, then it may be appropriate to provide a sample file that demonstrates the problem; but please keep it as small as possible, and sanitize any confidential information before uploading.

What features do you think are causing the issue

• Reader
• Writer
• Styles
• Data Validations
• Formula Calculations
• Charts
• AutoFilter
• Form Elements

Does an issue affect all spreadsheet file formats? If not, which formats are affected?

yes, probably

Which versions of PhpSpreadsheet and PHP are affected?

1.23 7.3

[bridgeplayr]

• Modify Chart/Chart.php to add new property roundedCorners; add getter/setter methods

    /** @var bool */
    private $roundedCorners = false;

    public function getRoundedCorners(): bool
    {
        return $this->roundedCorners;
    }

    public function setRoundedCorners(bool $roundedCorners): self
    {
        $this->roundedCorners = $roundedCorners;

        return $this;
    }

• Modify Writer/Xlsx/Chart.php
• modify public function writeChart()

        $objWriter->startElement('c:roundedCorners');
        $objWriter->writeAttribute('val', int ($chart->getRoundedCorners());
        $objWriter->endElement();

For an example, refer to any of the Date Axis or Gridlines Issues.

Why? Because I like rounded corners.