Re: Access figure data?

[Peter Rolf <indiego@gmx.net>]

Am 14.10.2010 21:33, schrieb Hans Hagen:
> On 14-10-2010 8:10, Brian Wedde wrote:
>> Is there any way to get access to the data about external figures? I
>> would like
>> to know the pixel height/width of the actual image.
>>
>> [I am trying to typeset a mass of html-based documents with images
>> using a
>> series of scripts. The images need to be positioned somewhat like they
>> would
>> be on the screen. However, the html itself carries no info about the
>> image.]
> 
> in next beta (not today):
> 
> \starttext
> 
> \externalfigure[mill.png] % \calculateexternalfigure[mill.png]
> 
> \starttabulate[|l|lT|Tl|]
> \HL
> \NC \tex{figurestatus}          \NC \number\figurestatus  \NC numexpr
> \NC \NR
> \NC \tex{figurewidth}           \NC \figurewidth          \NC \NC \NR
> \NC \tex{figureheight}          \NC \figureheight         \NC \NC \NR
> \NC \tex{figurexscale}          \NC \figurexscale         \NC \NC \NR
> \NC \tex{figureyscale}          \NC \figureyscale         \NC \NC \NR
> \HL
> \NC \tex{figuresize}            \NC \figuresize           \NC \NC \NR
> \NC \tex{figurelabel}           \NC \figurelabel          \NC \NC \NR
> \NC \tex{figurefileoriginal}    \NC \figurefileoriginal   \NC \NC \NR
> \NC \tex{figurefilepage}        \NC \figurefilepage       \NC \NC \NR
> \NC \tex{figurefileoptions}     \NC \figurefileoptions    \NC \NC \NR
> \NC \tex{figurefileconversion}  \NC \figurefileconversion \NC \NC \NR
> \NC \tex{figurefilecache}       \NC \figurefilecache      \NC \NC \NR
> \NC \tex{figurefileprefix}      \NC \figurefileprefix     \NC \NC \NR
> \HL
> \NC \tex{figurenaturalwidth}    \NC \figurenaturalwidth   \NC \NC \NR
> \NC \tex{figurenaturalheight}   \NC \figurenaturalheight  \NC \NC \NR
> \NC \tex{figurexresolution}     \NC \figurexresolution    \NC \NC \NR
> \NC \tex{figureyresolution}     \NC \figureyresolution    \NC \NC \NR
> \NC \tex{figurexsize}           \NC \figurexsize          \NC \NC \NR
> \NC \tex{figureysize}           \NC \figureysize          \NC \NC \NR
> \NC \tex{figurecolordepth}      \NC \figurecolordepth     \NC \NC \NR
> \NC \tex{figuredepth}           \NC \figuredepth          \NC \NC \NR
> \HL
> \NC \tex{figurefilepath}        \NC \figurefilepath       \NC \NC \NR
> \NC \tex{figurefilename}        \NC \figurefilename       \NC \NC \NR
> \NC \tex{figurefiletype}        \NC \figurefiletype       \NC \NC \NR
> \NC \tex{figurefullname}        \NC \figurefullname       \NC \NC \NR
> \NC \tex{noffigurepages}        \NC \noffigurepages       \NC \NC \NR
> \HL
> \stoptabulate
> 
> \stoptext
> 
> most were already there, new are:
> 
> figurexresolution
> figureyresolution
> figurexsize
> figureysize
> figurecolordepth
> figuredepth
>

Nice to have. Is this also possible from the lua side? I ask, because I
need the pixel size of a graphic for some border checking ('clip' a
frame out of a bitmap). Currently I use \getfiguredimensions from the
tex side, as I haven't found a way in lua yet.

Peter
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