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World: r3wp

[!RebGUI] A lightweight alternative to VID

Ashley
25-Aug-2009
[8398]
What do you mean by pagination in the context of a table?
Graham
25-Aug-2009
[8399x4]
say you have 1000 rows... but you only want to display 20 at a time
having all the data inside the table at once means big slow down 
time
better to feed the table from a sql query, or another function that 
holds all the data
so you can use the scroller to move within the 20 items .. but not 
to scroll past them.  You have to paginate to the next 20.
Ashley
25-Aug-2009
[8403]
The slow-down is from the query side not the RebGUI/table side. Table 
uses an iterator function so whether the table has 10 rows or 1,000,000 
it should be the same speed ... fetching 10 rows or 1,000,000 across 
a network is another story.
Graham
25-Aug-2009
[8404x4]
That's not my observation.
Anyway, 20 rows will be faster than 40 right?
Anyway, scrolling thru 1M rows is impractical.
I presume altme uses an iterator function as well... I just switched 
from 1000 to 4000 in preferences and now scrolling is a dog.
Ashley
25-Aug-2009
[8408x3]
Try this on 10, 100 and 1,000 rows:

d: copy []
loop 20 [insert tail d reduce [random 10 random 10]]
s: now/time/precise
display "A" [
	table 20x100 options ["A" left .5 "B" left .5] data d
]
print now/time/precise - s

seems to scale pretty well here (on a Mac).
(replace loop 20 with loop n)
Back to your request-value question, does the prompt for:


 request-value "Enter the url for your website here. It looks h t 
 t p ://www.site.com"


appear on 3 lines? If so, what would you enhancement request (vertical 
layout option) do? (not wrap the prompt and extend the field width 
to match prompt text width?)
Graham
25-Aug-2009
[8411x2]
the prompt doesn't wrap currently ...
I'd just want an after 1 layout I think
Ashley
25-Aug-2009
[8413]
What build# are you running?
Graham
25-Aug-2009
[8414x5]
I tried your latest
as for the table scrolling ... yes, it is fast.
Did you change the table routines recently?
In my app, I have 24 rows, and there is a definite lag belween the 
scroller and what I see on screen.
ie. the scroller lags behind the mouse as it drags it up and down.
Ashley
25-Aug-2009
[8419]
The underlying face-iterator hasn't changed much, but the slider 
code was totally rewritten ... so it *might* have been the slider 
widget?
Graham
25-Aug-2009
[8420x4]
I'm using the table from prior to the big color changes
Going to try the older rebgui....
Wow .. huge differences
Even with only 50 items there is a noticeable lag with the older 
table.
Ashley
25-Aug-2009
[8424]
The rewrite was worth it then ;)
Graham
25-Aug-2009
[8425x3]
Yes .. definitely .. although I can't use it without breaking my 
application
Did you always use iterated faces for the table?
Could it just be the scroller?
Ashley
25-Aug-2009
[8428]
Yes and yes.
Graham
25-Aug-2009
[8429]
Ok.
Ashley
25-Aug-2009
[8430]
And before you ask, back-porting just the scroller is not viable.
Graham
25-Aug-2009
[8431]
I erased that response I was about to make!
Ashley
25-Aug-2009
[8432]
Back to your request-value prompt wrap issue ... I just tried it 
under WinXP with build#212 and I get 3 wrapped lines of text. Does 
your requestor have a big blue question mark icon in the top-left 
corner?
Graham
25-Aug-2009
[8433]
Yes
Ashley
25-Aug-2009
[8434]
Are you on WinXP, Vista or Win7?
Graham
25-Aug-2009
[8435x7]
Looks like the scroller issue goes back a while .. I tested the version 
where you had the color changes and that is also fast.
Windows 7 RC1
let me check the source ..
Yes, it is request-value
But you must have just changed it ... as it now wraps
let me show you the older version
Ahhh.. can't use 'editor anymore.
Ashley
25-Aug-2009
[8442]
Try request-edit instead.
Graham
25-Aug-2009
[8443]
** Access Error: Cannot open /C/Rebol/rebgui/icons/16x16/actions/document-new.png
** Where: load-icon
** Near: icon: load file
Ashley
25-Aug-2009
[8444]
Does tour.r work for you (it needs the same icons)?
Graham
25-Aug-2009
[8445]
yes
Ashley
25-Aug-2009
[8446]
Different dir?
Graham
25-Aug-2009
[8447]
http://screencast.com/t/BEp7A32PY7