ICEpdf
  1. ICEpdf
  2. PDF-972

PDF contains malformed external graphic state alpha

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 6.1
          • Fix Version/s: 6.1.1
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            Any

            Description

            The PDF in question contains a external graphic state dictionary with he following value <</ca 100>>. The problem here is that a /ca value should be defined in range of 0->1.0. We have code that takes the 100 value and divides by 255 which is a common process for colour values.

            When the division happens we get a 0.39 transparency and the rendering of the graphics looks light. I think its safe to say the division/conversion code should be used for /ca and /CA values.

            This looks like an issue with the iPaper.Net encoder but I think we can fix this without to many regressions.

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                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: