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  1. Qt
  2. QTBUG-18997

QPrinter: pdf printing of Format_Mono images is extremely slow

    XMLWordPrintable

Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 4.8.0
    • 4.7.2
    • GUI: Printing
    • Tested with Windows 7 x64 and X11/Kubuntu
    • 18122b473ecbd85ba953f70743b1756358bf7c0c

    Description

      Use case:

      QImage is rendered with QImage::Format_Mono

      The image is printed using QPrinter into pdf format.

      The resultant file size is around 35Mb and the time taken is about 9 or 10 seconds.

      When compared with Qt 4.5, the file size is around 300Kb and the time taken is less than one second

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            cattell Matthew Cattell (Inactive)
            cattell Matthew Cattell (Inactive)
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            Dates

              Created:
              Updated:
              Resolved: