> I am wrapping a little bit of poppler just aiming to extract some images from
> PDF's.
Unfortunately Google was not able to find your valid email or postal address.
I have added poppler to gintro.
You may test with
nimble uninstall gintro
nimble install gintro@#head
Run
At least this tiny test program seems to work:
import gintro/[poppler, cairo]
proc main =
var doc = newDocumentFromFile("file:///home/salewski/hhh9/lm741.pdf", nil)
echo "Number of pages: ", doc.nPages()
var page: Page = doc.getPage(2)
var imseq = getImageMapping(page)
echo imseq.len
for i in imseq:
echo i.imageId
echo i.area
var surface = getImage(page, 0)
let status = cairo.writeToPng(surface, "test.png")
echo status
main()
Run
nim c t.nim
Hint: mm: orc; threads: on; opt: none (DEBUG BUILD, `-d:release` generates
faster code)
105225 lines; 1.142s; 168.074MiB peakmem; proj: /home/salewski/hhh9/t.nim;
out: /home/salewski/hhh9/t [SuccessX]
salewski@hx90 ~/hhh9 $ ./t
Number of pages: 17
2
1
(x1: 101.5, y1: 136.8, x2: 246.5, y2: 224.8)
0
(x1: 348.8, y1: 136.96, x2: 526.8, y2: 227.96)
success
salewski@hx90 ~/hhh9 $ nim c -d:gintroDebug t.nim
salewski@hx90 ~/hhh9 $ ./t
Number of pages: 17
2
1
(x1: 101.5, y1: 136.8, x2: 246.5, y2: 224.8)
0
(x1: 348.8, y1: 136.96, x2: 526.8, y2: 227.96)
success
destroy Surface:ObjectType 140070177714368
destroy ImageMapping:ObjectType 140070177706080
destroy ImageMapping:ObjectType 140070177706144
destroy Page:ObjectType 140070177714320
destroy Document:ObjectType 140070177714272
Run
For poppler.Rectangle and poppler.ImageMapping we still use proxy objects -- I
have provided getter procs to access the fields, see end of poppler.nim file. I
have not the time and motivation to examine poppler in much detail, there may
exist more data types with fields, for which you may have to create getter
procs. For that, we would have to generate the fields first, which needs a
modification of the gen.nim generator script. Search for poppler.Rectangle to
find were fields are generated. You should know enough Nim to manage that
yourself, you can find in the issue tracker instructions how you can run
gen.nim inside of a local directory. Libraries like libnice, gstreamer and
poppler are difficult for bindings, as the gobject-introspection is a late
add-on for these. Native GObject libs generally avoid use of objects with
fields or provide getter and setter functions by gobject-introspection, which
manual intervention unnecessary.
Well, enough "ramblings" from me for today. At least I have learned a new word,
German translation seems to be "Geschwafel", which is not a very friendly term.
When you should need more support, use the gintro issue tracker or email, as I
will not continue reading this thread.
