all devices regression report - 2017-10-25-08:13:40 - d9d74def0095641f20b46716c929bc6f88154490

Differences in all devices errors using gs/examples files

Previous Revision: 140e1cb28a6ad42e2ded8381af8b53421923e0e1
 Current Revision: d9d74def0095641f20b46716c929bc6f88154490

commit d9d74def0095641f20b46716c929bc6f88154490
Author:     Ken Sharp <[email protected]>
AuthorDate: Wed Oct 25 14:57:12 2017 +0100
CommitDate: Wed Oct 25 14:57:40 2017 +0100

    pdfwrite - revisit clipped text and commit 46ef6bc80bd7388883a00aa866af38fe8f05d45b
    
    Bug #698693 "clipped text is selectable in pdf"
    
    Commit 46ef6bc80bd7388883a00aa866af38fe8f05d45b fixed bug 697442, in
    that case we needed to completely process text which had been
    deliberately placed off the page (and tehrefore outside the clip).
    
    In that bug the text used glyphshow, which meant that it could not use
    stringwidth to measure the width of the string, and perform accurate
    positioning. So instead it placed the current point off the page,
    used glyphshow to draw the text, and then currentpoint to find the
    displacement.
    
    By not fully processing the text we did not correctly update currentpoint
    and so the text was misplaced. This was fixed by fully processing
    the text, but altering a copy of the text enumerator's 'operation'
    field so that the text was not added to the page (clearing TEXT_DO_DRAW)
    
    However, there are still places (process_text_modify_width) which can
    add the text in, and those look directly at the text enumerator
    operation flags.
    
    So here we still copy the operation flags, but we then modify the copy
    held in the text enumerator, so that any subsequent processor will
    be able to see that the text should not be drawn. At the end of the
    function we restore the flags in the enumerator. This has meant a few
    places executing a 'goto' in order to reset the flags, instead of simply
    returning as previously.
    
    A few test files show extremely minor (1 pixel) positioning differences.

devices/vector/gdevpdte.c

new errors:

errors that went away:

errors that are not whitelisted:
=== ghostpdl/examples/transparency_example.ps === cp50 ===
=== ghostpdl/examples/transparency_example.ps === psdrgb ===