ICEpdf
  1. ICEpdf
  2. PDF-1131

Vertical text rendered inverted/mirrored

          Details

          • Type: Bug Bug
          • Status: Resolved
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 6.2.2
          • Fix Version/s: 6.3.1
          • Component/s: Core/Rendering
          • Labels:
            None
          • Environment:
            All

            Description

            In the provided PDF there is some text displayed vertical. This text is being rendered inverted/mirrored.

              Issue Links

              duplicates

              Bug - A problem which impairs or prevents the functions of the product. PDF-865 Text in PDF is rendered upside down

              • Major - Major loss of function.
              • Resolved

                Activity

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                Arran Mccullough created issue -
                Repository Revision Date User Message
                ICEsoft Public SVN Repository #50936 Mon Mar 06 12:01:15 MST 2017 patrick.corless PDF-1131 testing validity of potential inverted text fix.
                Files Changed
                Commit graph MODIFY /icepdf/branches/icepdf-6.2.0/icepdf/core/src/org/icepdf/core/util/content/AbstractContentParser.java
                Patrick Corless made changes -
                Field Original Value New Value
                Fix Version/s 6.2.3 [ 13098 ]
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                Patrick Corless added a comment -

                The PDF seems to be the only one of it's kind in our qa content set. It's a rare bird in that it uses the a 'cm' inside of a text block instead of a 'Tm' token. Our other example all work fine but they have relatively simple transforms containing just scale and translate. This PDF uses a negative shear X value which is why we render the text inverted on the vertical. It would appear we should ignore the shear value if the a 'cm' is used, or at least this is what acrobat seems to be doing. Once we do the correction for the negative value the document renders correctly as do our handful of other document that incorrectly use 'cm' over 'tm'.

                Show
                Patrick Corless added a comment - The PDF seems to be the only one of it's kind in our qa content set. It's a rare bird in that it uses the a 'cm' inside of a text block instead of a 'Tm' token. Our other example all work fine but they have relatively simple transforms containing just scale and translate. This PDF uses a negative shear X value which is why we render the text inverted on the vertical. It would appear we should ignore the shear value if the a 'cm' is used, or at least this is what acrobat seems to be doing. Once we do the correction for the negative value the document renders correctly as do our handful of other document that incorrectly use 'cm' over 'tm'.
                Repository Revision Date User Message
                ICEsoft Public SVN Repository #50937 Mon Mar 06 13:18:22 MST 2017 patrick.corless PDF-1131 cm used inside a text block is supposed to be the same Tm token
                but this is not the case in this corner case. It would appear we should
                 not be applying the shearX of the transform.
                Files Changed
                Commit graph MODIFY /icepdf/branches/icepdf-6.2.0/icepdf/core/src/org/icepdf/core/util/content/AbstractContentParser.java
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                Patrick Corless added a comment -

                Marking as fixed.

                Show
                Patrick Corless added a comment - Marking as fixed.
                Patrick Corless made changes -
                Status Open [ 1 ] Resolved [ 5 ]
                Resolution Fixed [ 1 ]
                Patrick Corless made changes -
                Status Resolved [ 5 ] Closed [ 6 ]
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                Patrick Corless added a comment -

                Found the root issue reopening.

                Show
                Patrick Corless added a comment - Found the root issue reopening.
                Patrick Corless made changes -
                Resolution Fixed [ 1 ]
                Status Closed [ 6 ] Reopened [ 4 ]
                Patrick Corless made changes -
                Fix Version/s 6.3.1 [ 13113 ]
                Fix Version/s 6.2.3 [ 13098 ]
                Patrick Corless made changes -
                Link This issue duplicates PDF-865 [ PDF-865 ]
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                Patrick Corless added a comment -

                Similar issue.

                Show
                Patrick Corless added a comment - Similar issue.
                Repository Revision Date User Message
                ICEsoft Public SVN Repository #52372 Tue Apr 03 14:29:27 MDT 2018 patrick.corless PDF-865 fairly major text parsing change to correctly handle cm tokens
                in a text block. Fixes three other issues, PDF-1245 and PDF-1131.
                Files Changed
                Commit graph MODIFY /icepdf/trunk/icepdf/core/core-awt/src/main/java/org/icepdf/core/util/content/AbstractContentParser.java
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                Patrick Corless added a comment -

                Marking as fixed.

                Show
                Patrick Corless added a comment - Marking as fixed.
                Patrick Corless made changes -
                Status Reopened [ 4 ] Resolved [ 5 ]
                Resolution Fixed [ 1 ]

                  People

                  • Assignee:
                    Patrick Corless
                    Reporter:
                    Arran Mccullough
                  • Votes:
                    0 Vote for this issue
                    Watchers:
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                    Dates

                    • Created:
                      Updated:
                      Resolved: