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  1. XWiki Platform
  2. XWIKI-19568

Canvas elements are blank in the PDF export

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Details

    • Bug
    • Resolution: Fixed
    • Major
    • 14.2.1, 14.3-rc-1
    • 14.2-rc-1
    • Export - PDF
    • None
    • Medium
    • N/A
    • N/A

    Description

      Macros such as Chart.js Integration are using the HTML Canvas element for drawings. The drawings appear fine in view mode but when the page is exported to PDF (client side) they disappear.

      The canvas elements become blank because they are moved around in the DOM tree by paged.js when it layouts the pages for print. Detaching a canvas element from DOM clears its content so re-attaching it to the DOM leads to a blank canvas.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. CHARTJS-34 The charts are not fully loaded when exported to PDF

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. XWIKI-19625 Canvas elements are not displayed in PDF export on Chrome and Edge

          • Major - Major loss of function.
          • Closed
          links to

          Web Link #69: Canvas elements rendering

          Activity

            People

              mflorea Marius Dumitru Florea
              mflorea Marius Dumitru Florea
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              Dates

                Created:
                Updated:
                Resolved: