[NTG-context] how to set PDF TrimBox ?

[Harald Koenig]

On May 20, Harald Koenig wrote:

> Hi,
> 
> how can I set the /TrimBox values in PDF ?
> right now I use
> 
>       \setuppapersize[A4][B4]

looking at the current context code I can't (without changing context).
all boxes are set to identical values:-(

for my current setup I'm using the following hardcoded hack below for now (only for one night;)

what's the reason that the "BleedBox" wasn't output/set ?



--- tex/texmf-context/tex/context/base/lpdf-mis.lua~	2015-02-10 16:59:48.000000000 +0100
+++ tex/texmf-context/tex/context/base/lpdf-mis.lua	2015-05-20 22:29:57.044026611 +0200
@@ -346,9 +346,17 @@
         boxvalue(width-leftoffset),
         boxvalue(pageheight-topoffset),
     }
+-- 56.6929 79.37005 651.9685 921.25985
+-- 56.6929 79.3701  651.9685 921.2598
+    local trimbox = pdfarray { -- can be cached
+        boxvalue(56.6929 * 65536. * 72.27 / 72.),
+        boxvalue(79.37005 * 65536. * 72.27 / 72.),
+        boxvalue(651.9685 * 65536. * 72.27 / 72.),
+        boxvalue(921.25985 * 65536. * 72.27 / 72.),
+    }
     addtopageattributes("CropBox",box) -- mandate for rendering
-    addtopageattributes("TrimBox",box) -- mandate for pdf/x
- -- addtopageattributes("BleedBox",box)
+    addtopageattributes("TrimBox",trimbox) -- mandate for pdf/x
+    addtopageattributes("BleedBox",box)
  -- addtopageattributes("ArtBox",box)
 end
 



Harald
-- 
"I hope to die                                      ___       _____
before I *have* to use Microsoft Word.",           0--,|    /OOOOOOO\
Donald E. Knuth, 02-Oct-2001 in Tuebingen.        <_/  /  /OOOOOOOOOOO\
                                                    \  \/OOOOOOOOOOOOOOO\
                                                      \ OOOOOOOOOOOOOOOOO|//
                                                       \/\/\/\/\/\/\/\/\/
Harald Koenig                                           //  /     \\  \
koenig at tat.physik.uni-tuebingen.de                     ^^^^^       ^^^^^