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World: r3wp

[View] discuss view related issues

Maxim
13-Oct-2010
[10384]
use lit-path and then do the path.
james_nak
13-Oct-2010
[10385x2]
Thanks, I thought you might know that with all the stuff you do.
Well, I'm still getting the same error but after all of this I decided 
to go about it a different way. Thanks though.
Maxim
13-Oct-2010
[10387x2]
(you have a root / ... paths do not start with a slash  !)
person/name   not   /person/name
Steeve
13-Oct-2010
[10389]
James, about your object-to-xml need. The best way to express it 
when you speak to other programmers is to give them a concrete use 
case.
1/ mold the input
2/ mold the expected output.

Then, one can figure a solution without the need to decipher your 
patter ;-)
Oldes
13-Oct-2010
[10390]
first of all.. why you need to conver person/name into p? And why 
we discuss it in View group?
james_nak
13-Oct-2010
[10391]
Oldes, originally I was going to build a function that took the output 
of xml-to-object.r and change it back to xml. For that I was creating 
paths to the objects but couldn't get past the path being more than 
one level issue. 

As I mentioned, there was some discussion a few years back and there 
was mention that what worked in Core did not in View so rather than 
start something there, I thought it best to do that here.
I'm good now with my new approach.
Gabriele
14-Oct-2010
[10392]
Andreas, weird, last time I tried .4.3 it would segfault on start 
iirc - now seems to work ok.
james_nak
21-Oct-2010
[10393]
I just heard that one of my encapped view apps was "disappearing" 
when the client performed a particular function which used to work 
and which works on other computers at her company. What would you 
suggest is the best way to figure out what is happening?
Maxim
21-Oct-2010
[10394]
disappearing is a bit vague...   the only thing that I can think 
of is that in Vista and 7 you need to follow the "program files" 
guidelines.

so ask if they are all using the same OS.
Henrik
21-Oct-2010
[10395]
could it be related to stack size problems?
Maxim
21-Oct-2010
[10396x3]
ok, by disapear you mean it just closes by itself....
henrik, that is a good guess.
another thing I've seen which causes immediate close is the use of 
"some" AGG constructs which crash the interpreter silently.


chief among them is to use line-patterns which more than 2 colors. 
 it doesn't always crash, but *it will* suddenly, without warning, 
IIRC.
Pekr
21-Oct-2010
[10399]
maybe it just travelled to Steeve Jobs for approval :-)
Henrik
21-Oct-2010
[10400]
Maxim, I guessed, because we had a few stack size problems a couple 
of days ago with R3 builds.
james_nak
21-Oct-2010
[10401x2]
Yes, what I mean by disappears is that the program closes without 
any errors. I will check the OS's, that's one I didn't ask. It's 
intermitent  so that hasn't helped either.
And what I mean by no errors, is that none are displayed which of 
course, doesn't mean there weren't any errors. Thanks for your thoughts.
amacleod
27-Oct-2010
[10403x2]
I was playing with Cyphre's "Transparency window under View" script 
trying to get a transparent overlay that I could use to draw over 
other programs like they use to doodle over plays in football. I 
was able to get it to work in vista but not xp. Anyone know what 
might be going on there?
different user32.dll but I can not find any info on what the diffs 
might be.
Maxim
27-Oct-2010
[10405x2]
I remember it working on my xp
is this an old system?
amacleod
27-Oct-2010
[10407]
the script works but the abilitiy to paint over the color-keyed area 
does not work in xp...
Maxim
28-Oct-2010
[10408]
yI'd look it up on MSDN there might be extra steps to update the 
transparency in real-time  but it is definitely doable, I've seen 
an animated opengl demo rendering directly over all windows without 
a window of its own.
Oldes
30-Oct-2010
[10409]
How to clear the image cache? I always forget that:/
Sunanda
30-Oct-2010
[10410]
load-image/clear
Oldes
31-Oct-2010
[10411x2]
Yes, but what if you don't want to load image yourself.. for example 
in this simplifed example:

write/binary %tmp.jpg read/binary http://www.rebol.com/graphics/carl1208-120.jpg
view layout [ image %tmp.jpg button "close" [unview/all]]

write/binary %tmp.jpg read/binary http://www.rebol.net/photos/carl3.jpg
;now there should be new image used, but it's not:
view layout [ image %tmp.jpg button "close" [unview/all]]
delete %tmp.jpg


I think that the solution is to clear the image cache on unview/all. 
What do you think?
The only way how to clear the cache without loading new image is 
using:

write/binary %tmp.jpg read/binary http://www.rebol.com/graphics/carl1208-120.jpg
view layout [ image %tmp.jpg button "close" [unview/all]]
clear second second :load-image

write/binary %tmp.jpg read/binary http://www.rebol.net/photos/carl3.jpg
view layout [ image %tmp.jpg button "close" [unview/all]]
delete %tmp.jpg
Anton
31-Oct-2010
[10413]
Oldes shows that you can't just "load-image/clear", you must "load-image/clear 
imgfile", which loads a new image after clearing the cache. It offers 
no way to separate the two functionalities. Annoying, isn't it?


O  Use  clear second second :load-image , as you are, but I suggest 
doing this straight after the loading, eg.

 layout [ image %tmp.jpg  do [clear second second :load-image] ... 
 ]

O  Patch or replace LOAD-IMAGE  eg. so its IMAGE-FILE argument can 
also be NONE!

O  Patch the IMAGE style by changing the FILE function in the MULTI 
object:
	print mold get in svv/vid-styles/image/multi 'file
    so it doesn't use LOAD-IMAGE.
[ ]  Submit this deficiency to curecode.

Or  
>> view layout [image (load %bay.jpg)]
>> mold second second :load-image
== "[]"
Brock
31-Oct-2010
[10414x2]
am I stating something obvious when I say check the source for load-image?
>> source load-image
load-image: func [
    "Load an image through an in-memory image cache."
    image-file [file! url!] "Local file or remote URL"
    /update "Force update from source site"
    /clear "Purge the entire cache"
    /local image image-cache
][
    image-cache: []
    if clear [system/words/clear image-cache recycle]
    if any [update not image: select image-cache image-file] [

        if all [update image] [remove/part find image-cache image-file 2]
        repend image-cache [
            image-file
            image: either file? image-file [load image-file] [

                either update [load-thru/binary/update image-file] [load-thru/binary 
                image-file]
            ]
        ]
    ]
    image
]
Oldes
1-Nov-2010
[10416]
I was checking the source of course, without it I would not come 
with code like:
	clear second second :load-image


But it was not for the first time when I had the situation with the 
unexpected image. Of course, to use :
	layout compose [image (load %image.jpg)]

is a solution as well. I just have to remember it not be confused 
again with code:
	layout [image %image.jpg]


The problem is, that normal user who want's to just display simple 
view layout does not know that there is the function load-image.
Cyphre
1-Nov-2010
[10417]
another rokaround is:
load-image/clear http://
or load-image/clear to-url none
etc.
Maxim
2-Nov-2010
[10418x2]
anyone started work (maybe even finished) some Draw ->  SVG converter 
?


actually, even the other way round would be usefull if the above 
isn't already tackled.
if you've started one, I'd be willing to either finish it or use 
it as a reference to build a mostly complete one and give it back 
to the community on rebol.org.
Steeve
2-Nov-2010
[10420x3]
SVG -> DRAW in R3 
but not finished...
but not working anymore with the host-kit
Input: 
http://sites.google.com/site/rebolish/test-1/lizard.svg
output:
http://sites.google.com/site/rebolish/test-1/lizard-rebol.png
code:
http://sites.google.com/site/rebolish/test-1/svg.r
Maxim
2-Nov-2010
[10423]
thanks!  I'll look into it, its possible that I need it, possible 
that I don't ... I just want to know what's out there so I can take 
educated decisisons :-)
Steeve
2-Nov-2010
[10424]
I probably made a wrong choice, trying to parse the source on the 
fly instead of converting the xml source into nested blocks.
Maxim
2-Nov-2010
[10425]
I'll have to build the convertion on both sides, so converting your 
code into using rebol blocks is going to be my choice.


I already have the xml part very well covered, so I'll dive into 
this in a few days.  thanks again.
GrahamC
2-Nov-2010
[10426x2]
Max, a task for you :) http://www.the8pen.com/index.html
Saw this on Gab's facebook comments
Maxim
2-Nov-2010
[10428]
wow that's real research... seems extremely usable!
GrahamC
2-Nov-2010
[10429x2]
yeah .. I do my research on facebook
Looks doable in View and R2
Maxim
2-Nov-2010
[10431]
yes, but with patent pending, it means we can't actually do it unless 
we get a license from them.
GrahamC
2-Nov-2010
[10432]
eh??
Maxim
2-Nov-2010
[10433]
yep.