[Poppler-bugs] [Bug 19896] New: Bad rendering with Extend attributes

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=19896

           Summary: Bad rendering with Extend attributes
           Product: poppler
           Version: unspecified
          Platform: Other
               URL: http://jean-christophe.dubacq.fr/opost/en/Why-do-I-
                    prefer-Acrobat-Reader-to-other-free-PDF-readers
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: cairo backend
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: jcdubacq1 at free.fr


Created an attachment (id=22460)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=22460)
A PDF file using the extend property (badly rendered)

The problem comes from linear gradient rendering. In one file I did generate
(this maybe the reason why the bug does appear there and not in many other
places), I use a linear gradient from one colour to another. Only acrobat seems
to fill the part of the gradient that is not (indeed) the gradient with the
determined colors, as should be when the Extend values are set to true.

The reference page is page 186 of the PDF 1.7 reference manual. Quoting from
this reference: "An array of two boolean values specifying whether to extend
the shading beyond the starting and ending points of the axis, respectively.
Default value: [ false false ]."


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