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World: r3wp

[View] discuss view related issues

Graham
21-Sep-2006
[5566]
yes .. taken from a database
Henrik
21-Sep-2006
[5567x2]
I'm not certain if you can do that...
OO.o is capable of taking values from a database and put it in a 
document, but I'm not sure if those values can be transferred to 
a PDF form.
Graham
21-Sep-2006
[5569x3]
Starting with Rebol .. I can create a VID form using the scanned 
jpg as the background.
I can overlay some VID text boxes over the form areas.
I can then save the completed form as a PNG and print it ... sort 
of ..
Henrik
21-Sep-2006
[5572x2]
yeah, there is something missing there...
if we had the possibility of using bitmaps in postscript or pdf-maker, 
then you could solve it in rebol
Graham
21-Sep-2006
[5574x2]
pdf-maker doesn't support pdf forms yet.
Gabriele doesn't have any current plans to do so either.
Henrik
21-Sep-2006
[5576]
that wouldn't be necessary if you used a VID app to fill out the 
form, right?
Graham
21-Sep-2006
[5577]
so, VID => pdf using pdf-maker?
Henrik
21-Sep-2006
[5578]
you could do that if pdf-maker supported bitmaps properly
Graham
21-Sep-2006
[5579]
and it doesn't ??
Henrik
21-Sep-2006
[5580x2]
well I have not had any success with it
and it only supports uncompressed bitmaps
Graham
21-Sep-2006
[5582x3]
Oh, an alternative idea then.
Scan in as whatever .. turn it into an eps.
take the vid data and write it over the eps .... where you want the 
data ..and send to postscript printer.
Henrik
21-Sep-2006
[5585]
that might work
Graham
21-Sep-2006
[5586x6]
Actually, what I am doing for infant growth charts is to take the 
pdf forms ... turn them into postscript ... add some growth data 
as postscript lines and then print them
I guess I can do the same for electronic forms.
Yes, that's what I can do .. it's the same thing.
But the end users won't be able to do this ...
So, it would be good to find a solution suitable for an enduser.
So, the eps idea might be the better way to do it.
yeksoon
21-Sep-2006
[5592]
quick question about images.

eg.

==
i1: load %image.jpg
i2: i1
i2/size: 300x300
save/png %a.png i2
===

why does the image comes out distorted?


what is the correct way to 'resize' an image and save it in a different 
format?
Henrik
21-Sep-2006
[5593x2]
i1: load %image.jpg

save/png %a.png layout/tight [image 300x300 i1]
unfortunately you can only do nearest neighbor scaling
yeksoon
21-Sep-2006
[5595]
layout/tight?

is there such a refinement?
Henrik
21-Sep-2006
[5596]
yes in rebol/view 1.3.x. not in 1.2.x
yeksoon
21-Sep-2006
[5597]
I am on /view 1.3.x ....but have an error..

===
** Script Error: Invalid argument: type: face
offset: 0x0
size: 300x300
span: none
pane: [make object! [
        type: 'face
        offs...
** Where: halt-view
** Near: save/png %a.png layout/tight [image 300x300 i1]
==
Henrik
21-Sep-2006
[5598]
thought it could do that directly, but then:

save/png %a.png to image! layout/tight [image 300x300 i1]
yeksoon
21-Sep-2006
[5599]
yes..that works!
Henrik
21-Sep-2006
[5600]
but it eats memory. beware of that :-)
Anton
21-Sep-2006
[5601x2]
original: %image.png  ; INPUT FILE
resized: %resized.png ; OUTPUT FILE
new-size: 300x300


save/png resized draw make image! new-size compose [image (load original) 
0x0 (new-size - 1x1)]

; examine results
view layout [image (load original) image (load resized)]
The above uses AGG scaling via the DRAW dialect. If you are converting 
many images, it should be faster than using LAYOUT all the time (and 
the code is shorter).
Gabriele
21-Sep-2006
[5603]
Henrik: PDF Maker 1 has been used extensively with images. And they'll 
be back in v2 very soon. The only drawback is lack of any compression, 
so the resulting PDF file is rather big (if the source image is big).
Henrik
21-Sep-2006
[5604]
gabriele, that sounds good :-)
Maxim
21-Sep-2006
[5605x3]
wow, where does the 'draw command come from !!! hehe am I the only 
one who didn't even know it was there?  I guess its there since draw 
was added to view!
is there a way to alter the sampling algorythms used in draw?
faster/better quality and up and down sizing all have optimised algorythms. 
 There is no universal algorythm for resizing, not even the slower 
ones.  Some have sweetspots in various conditions.
Gabriele
21-Sep-2006
[5608]
draw native has been added with AGG
Henrik
22-Sep-2006
[5609]
I just miss being able to create proper thumbnails with draw AGG
Gregg
22-Sep-2006
[5610]
Being able to save JPGs is my only outstanding image-related request, 
but I know that isn't likely to happen.
Geomol
23-Sep-2006
[5611]
Gregg, why not? Is the code too large for Carl to include it, or 
is it something else?
Graham
23-Sep-2006
[5612x2]
licensing ?
http://www.extremetech.com/article2/0,3973,389261,00.asp
Henrik
23-Sep-2006
[5614x2]
graham, I think that was overthrown in 2004
http://www.groklaw.net/article.php?story=20060526105754880