[Poppler-bugs] [Bug 72312] [patch] pdftops: Fixes/improvements for -origpagesizes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72312

--- Comment #18 from Adrian Johnson <ajohnson at redneon.com> ---
While fixing some more bugs I was looking into why we have the origPageSizes
mode when "-paper match" seems to do the same thing. The current code, without
the patches in this bug applied, does the following:

The "-paper match" option uses the media box as the paper size and the crop box
as the pdf page size. The -expand -noshrink and -nocenter options change the
scale and position of the pdf page within the paper. If "-nocrop" is used the
pdf page size is the media box.

The "-origpagesizes" option uses the crop box as the paper size (unless -nocrop
is used in which case the media box is the paper size). No scaling or
translating is performed.

The problem with "-paper match" is it is using media box as the page size but
the glib and qt frontends use crop box as the page size. Acroread uses the crop
box as the page size for both display and printing.

The problem with "-origpagesizes" is, in addition to the rotate bug, if the
crop box has a non zero origin the output will not be positioned correctly
since there is no attempt to translate the origin.

My proposed solution is to make "-paper match" use the crop box as both the
paper size and pdf page size. This is consistent with acroread. The -nocrop
option will use the media box as the paper and page size. Then remove the
psModePSOrigPageSizes mode from PSOutputDev and make the "-origpagesizes"
option in pdftops.cc an alias for "-paper match". Till's patch has started
moving in this direction by sharing the paperMatch code for both "-paper match"
and "-origpagesizes". With the paper size and pdf page size equal to the crop
box the output should be identical to what is displayed on the screen no matter
what the scale or center options are set to. If this is not the case we should
fix the scale/translate code instead of trying to bypass it resulting in the
crop box origin bug.

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