World: r3wp

I'm putting in some background text as an image as a prompt to users, 
but it would be nice to clear the background image as soon as the 
user click types anything like those search fields in browsers

like this   field effect (to-image layout/tight [ backdrop white 
text "enter search term" ] font-color 230.230.230 ) [ aspect ]

I'm sure there's a native rebgui way of doing this rather than using 
'layout !

(to-image layout/tight [ backdrop white text "enter search term" 
 font-color 230.230.230 ] )

and have it restored when we clear the field

How about:


 field %a.png effect [fit] on-focus [face/image: none true] on-unfocus 
 [face/image: load %a.png true]

Looks logical - I'll give it a go.

It's getting a bit awkward now .. I have to set the image at startup, 
restore it on an unfocus event, and then restore it again if I clear 
the field.

I think I need to store the image in the field itself .. perhaps 
as a new type of field widget

How come things I create end up four times the size I specify?
button "Test" 10x10 maroon [print face/size]
prints 40x40 when I click it...

Johan;  RebGUI doesn't use pixels (well it does, but ...)  It uses 
a unit-size that can be set with the request-ui function.

See http://www.dobeash.com/RebGUI/user-guide.html#section-3.3for 
some details.

Sounds reasonable :) Is there any way to circumvent this for items 
that need a specific pixel size, in my case a picture?

And a related question.. Is it possible to resize the window when 
my picture is changed, so that the new picture doesn't get resized 
to the previous one's size?

Well, RebGUI allows for widget design but that can seem complicated 
at first.  Another method is judicious use of the span attributes 
and surrounding widgets with box elements set up like elastic widgets 
that will take/give all the space during a resize.


Or wait till Ashley reads this and responds as he always has the 
best and simplest advice.  :)

Is there a way for 'display to just return the layout without viewing 
?

like display/only ...

Umm...check ctx-rebgui/layout  but the source for display does some 
other nifty things other than just create the face.

Is there a way to set a backdrop to a display?

I tried setting lo/pane/1/image but that sets the image to the first 
widget in the layout

display "" [

button 10x10
	do [face/image: my-image face/effect: 'fit]
]

Is there a way for 'display to just return the layout without viewing?
 a: ctx-rebgui/layout/only [button 10x10]

what's the code for the layout backdrop?

 Is there any way to circumvent this for items that need a specific 
 pixel size, in my case a picture?

 image defaults to size -1x-1 which means *not* specifying a size 
 will default it to the image size.


 Is it possible to resize the window when my picture is changed, so 
 that the new picture doesn't get resized to the previous one's size?
 This should get you going:

	display "" [
		button [face/parent-face/size: 320x240 show face/parent-face]
	]


Note that in this case the size *is* in pixels as you are modifying 
a face object directly (as opposed to specifying a wudget's *unit* 
size). Hope that helps.

code for the layout backdrop?
 As above:

	display "" [
		button 10x10
		do [face/image: my-image face/effect: 'fit]
	]

or:

	display "" [
		button 10x10
		do [face/image: load %my-image.png face/effect: 'fit]
	]

Ok, thanks

Isn't there a dirty? flag in Vid to check to see if an area widget 
has been altered?

Ashley, we talked about this before.  I  am looking for a way to 
spell check in a popup or static window attached to the area that 
is being checked, and to double click on the choice, have it replace 
the highlighted text, and then move on to the next text which is 
then highlighted.  I got it working except for the part of highlighting 
the next word that is suspect.  It highlights and then immediately 
loses the highlight .. perhaps something to do with the double click 
and focus system?

So, you lose the context in which you are spell checking the current 
word

I remember looking at this and concluding that ctx-edit.r would have 
to be changed rather dramatically to allow this ... it has to do 
with the order in which set-focus and show are called. Several minor 
hacks I experimented with (mainly in set-focus) just didn't cut it. 
I put it in the "too hard" basket but may revisit this now that the 
long-running (for me at least) pick-list bug has been fixed; and 
I also have a few users asking about this as well.

I'd 'here here' on that one.  I've been mucking with a RebGUI based 
editor and getting a Find/Replace dialog working has been an excercise 
in hackery that I'm not a huge fan of.  (Much chasing of tail and 
subverting of code that I have too much respect for to allow the 
hackery.)

Any easy and good looking way to get a return key press (in a text 
field) to trigger an ok-button?

Johan; Try


display "test" [f1: field [b1/action/on-click b1 none] b1: button 
"Ok" [print "The action"]]


You may need to check with on-key if you want to restrict it to just 
"Enter", I'm not real sure what activities cause the action for fields 
to fire.  (Could be focus/unfocus...have to experiment)  and note 
this will not "click" the button, just evaluate it's on-click action 
code.  This advice is just in-the-meanwhile.  Ashley will no doubt 
have thee easy and good looking solution.  :)

Just wondering if it's better to allow one to copy text from an alert 
.. often they're error messages, and users like to copy them and 
email them.

how to change  this code  ?  display "test" [ area button "yes"  
button "no"]  . button "yes" have to be under button "on"

so as on this image  http://jacek.x10hosting.com/test.jpg

you culd try using a panel

area panel -1x-1 none data [ button "yes" return button "no" ]

thanks

how to  show image ?

dispray [ panel: panel white 80x12 data [ ]

button "img1" on-click [ panel/image: load %img1.png]

button "img2" on-click [ panel/image: load %img2.png]

]

Micha, a "show panel" is missing after setting /image

And, you shouldn't use the key-word PANEL as variable name.

And, I don't think that PANEL has an /IMAGE ;-)

my-pic: image ...
my-pic/image: load %img1.png
show my-pic

rebgui ver 93 seems to crash when a drop-list is double clicked

reported  in  Sept.  Ashley suggested


I think adding the dbl-action facet to the choose function in ctx-widgets.r 
will 'fix' the problem, as in:

	choose: make function! [
		...
	][
		...
		popup: 
make face-iterator [
			...
			alt-action:	none
			dbl-action:	none
		]
		...
	]

as he never saw this, perhaps it's not in SVN  yet

He meant rebgui-widgets.r

My rebgui UI gets unresponsive while some code is running. Since 
rebol doesn't have threads, I wonder what solution you'd recommend. 
Does the trick of assigning a rate of 0 to a GUI element work in 
RebGUI? Or would you perhaps separate the offending code and use 
"launch" to run a separate rebol process? Or maybe you know some 
other magic that I don't?

The code that blocks the UI is a ftp file upload, which to the best 
of my knowledge is done synchronously, hence the blocking.