Layout in more than one pane

Hi, I have been playing with panes & I have discovered some interesting behavior. If you try to dynamically create two panes that are in essence the same, but need to function seperately (as copies?). How do I copy a layout? I have tried: a: layout [ b: box c: box ] d: [box "hello"] b/pane: copy layout d c/pane: copy layout d ERROR! ** Script Error: copy expected value argument of type: series port bitset ** Where: make-win ** Near: new-bar/pane: copy layout/offset bar-content 0x0 so then I tried: a: layout [ b: box c: box ] d: layout [box "hello"] b/pane: copy d c/pane: copy d ERROR! Face in more than one pane. This also returns face in more than one pane: a: layout [ b: box c: box ] d: to-block layout [box "hello"] e: copy d b/pane: do d c/pane: do e Any thoughts? Has anyone dealt with this before? Thanks!! Ammon

Hi Ammon,

>> a: layout [b: box c: box] >> d: [box "hello"]

>> type? a

>> b/pane: make layout d [] >> c/pane: make layout d []

I can't seem to make that work in a little different application. What is wrong with this code? a: layout/offset [origin 0x0 space 0x0 box "hello"] 100x100 b: layout [origin 0x0 box "hello"] c: layout [box with [pane: make b []]] append a/pane make c [] append a/pane make c [] it returns the infamous "Face in more than....." Thanks!! Ammon ----- Original Message ----- From: "Nenad Rakocevic" <[dockimbel--free--fr]> To: <[rebol-list--rebol--com]> Sent: Wednesday, October 31, 2001 7:00 PM Subject: [REBOL] Re: Layout in more than one pane

> Hi Ammon, > >> a: layout [b: box c: box] > > > > I have been playing with panes & I have discovered some interesting

I encountered the exact problem this week :-) ok, where there are several things wrong... first is that the layout function returns a pane within a pane... so if you just append that you'll run into problems... cause each time your just returning the same object! start by using b/pane/1 and you already clear one thing BUT even that face still contains a link to the same object, you're trying to append twice... I always thought of the "make" function as a dynamic thing. but in reality it is a static, one time evaluation. so since you are adding your box with a nested pane twice it is adding a different pane, but each pane references that same and unique instance of "make b []" (the VID box). its like if you say that make b executes itself once and then every other time its first evaluation is returned instead... in your example, the window pane created in b is new everytime, but the pane which holds the box is always the same... cause layout encapsulates your box inside another pane... there is another insidious occurence of the same kind of problem when you just use "something: []" instead of "something: copy [] " within a function which creates faces... everyone ends up refering to the same pane... In practice, I have noticed that trying to mix VID and direct View usage is just plain frustrating... you're better of doing just one or just the other... otherwise it's really hard trying to make sure that binding is exact and that problems like the one you illustrate do not crop up... (which in my experience is sometimes impossible without a completely direct view hack ...) I would have included a "fixed" example but the truth is that it just wont work unless I completely rewrite it... and in that case there's no real point... in using any of the VID calls anyways... this should work: rebol[] vidbox: layout [box "hello" 90x30 ibevel] master-face: make face [offset: 100x100 ] sub-face: make vidbox/pane/1 ;extract the actual box... master-face/pane: copy [] append master-face/pane prev-face: make sub-face [offset: 0x0] append master-face/pane make sub-face [ offset/y: prev-face/offset/y + size/y offset/x: prev-face/offset/x ] view master-face I added some positioning stuff on the second make face, just to align them together. hope this helps -MAx

getting closer... now we got two single faces in the same face. How about two? That's simple: a: layout/offset [size 250x250 origin 0x0 space 0x0 text ""] 100x100 b: layout [origin 0x0 box "hi!"] c: layout [origin 0x0 button "push me!"] d: make b/pane/1 [] append a/pane make d [pane: make c/pane/1 []] append a/pane make d [pane: make c/pane/1 [] offset: 0x100] view a Thanks!! Ammon

Is this an alternative? face1: make face [pane: make face [text: "pane1"]] view face1 face2: make face [pane: make face [text: "pane2"]] view face 2 face1/pane/pane: face2 view face 1 This is just adding panes to a face but I am having a hard time really determining the real difference between a face and a pane as it seems that all panes begin with make face. So this approach seems to make sense to me anyway. Anybody else? Paul Tretter

I missed the beginning of this thread so I'm just jumping into the middle here. A pane is a collection of faces. It can be a single face, but it can also be a block. For example: ; ake two layouts with some faces in them lay1: layout [button red "Red Button" [unview]] lay2: layout [pad 50x0 button green "Green Button" [unview]] ; make some other face or a layout with a pane main: make face [size: 200x200 pane: copy []] ; add in the faces that are in the other layouts append main/pane lay1/pane ; first append main/pane lay2/pane ; layered on top view main ; now reverse them clear main/pane append main/pane lay2/pane append main/pane lay1/pane view main Does that help out at all? Sterling

Good info Sterling. This would be good to add to the RT site or better yet some information regarding using faces outside of using VID. I know when I was inquiring about this that many people had similiar interests and as well with this topic. Paul Tretter

Cyphre wrote:

> Aha.The key won't work because of "find-key-face" VID mezanine-function:

Hi Sterling and list, ---- Original Message ----- From: <[sterling--rebol--com]> To: <[rebol-list--rebol--com]> Sent: Friday, November 02, 2001 12:26 AM Subject: [REBOL] Re: Layout in more than one pane ........

> I missed the beginning of this thread so I'm just jumping into the > middle here. > > A pane is a collection of faces. It can be a single face, but it can > also be a block. For example: >

Hi Paul, did you go over the How-To which covers handling input !? -MAx

Hi, Cyphre

> maybe this is a little bit out of topic but I'm posting it to remind you > this two bugs (which I had already posted to feedback) because I believe you > b: make face [color: blue pane: [a]] > view layout [bx: box with [pane: [b]] button "hide box" [hide bx]]

> second bug: > > a: make face [size: 50x50 color: red] > view layout [box with [color: blue pane: [a]] button "hide box" [hide > a/parent-face]]

On Win2K REBOL just kills over. Is that what you see, or is there an error it normally returns? Thanks!! Ammon

Hi Romano, ......snip......

> I think this is not a bug of Vid, but of this piece of code which put a

> in the block of pane, not a face, the correct version should be: > a: make face [size: 50x50 color: red] > > a/parent-face]] > The same i think for the last.

> On Win2K REBOL just kills over. Is that what you see, or is there an

> it normally returns? >

Cyphre,

> Maybe > you will ask why I need to be pane a block of words? Because it is a lot > better accesible, readable, easier,(and IMO faster) to manipulate with

> of words than block > of objects. I'm just wondering that almost noone is using this method ;)

hi Cyphre, I just noticed, that you mentioned rebol being able to handle a pane with a block of WORDS! I have never tried... must the words be preset objects do you mean something like?: mybox: make face [] mybox2: make face [] mywindow: make face [offset: 30x30 pane: copy [] ] append mywindow/pane 'mybox append mywindow/pane 'mybox2 view mywindow in this case, is the binding/context always global? -MAx

Hi, Cyphre

> > > a: make face [size: 50x50 color: red] > > > view layout [box with [color: blue pane: [a]] button "hide box" [hide > also be a block.". There is no problem with reducing of the pane, because > faces are shown properly even when the pane contains block of words.

> regards > > Cyphre

Hi MAx, here is simple example of the method I mentioned before: (note that subfaces can be in non-global context as well, but it is up to you) ---------------------snip------------------------------------ my-window: make face [ red-face: make face [color: red size: 50x50 offset: 0x0] blue-face: make face [color: blue size: 50x50 offset: 25x25] edge: none pane: copy [] ] append my-window/pane in my-window 'blue-face append my-window/pane in my-window 'red-face view layout [ box with [pane: my-window] button "switch" [ remove append next my-window/pane first my-window/pane show my-window ] button "rnd color" [ foreach obj my-window/pane [ my-window/:obj/color: random 255.255.255 ] show my-window ] ] --------------------snip-------------------------------- as you can see with this method you can really very easy control subfaces in pane ;) I believe RT will fix the 'hide bug in the next release. regards Cyphre

hi Cyphre! Really cool, now I have to see if I should provide support (or at least some error handling) for this useage... thanks! -MAx

Hello Cyphre! On 05-Nov-01, you wrote: C> of objects. I'm just wondering that almost noone is using this C> method ;) Because most of the code does not handle it. (Try, for example, to assign a key to a button and reference it or its pane via a word...) Regards, Gabriele. -- Gabriele Santilli <[giesse--writeme--com]> - Amigan - REBOL programmer Amiga Group Italia sez. L'Aquila -- http://www.amyresource.it/AGI/

Hi Gabrielle,

> C> of objects. I'm just wondering that almost noone is using this > C> method ;) > > Because most of the code does not handle it. (Try, for example, to > assign a key to a button and reference it or its pane via a > word...)

Hi Cyphre, I think it is an interesting technique (I remember from when you used it in the first SWIS.) However I do a lot of pane manipulation with loops and found that works better for me in many cases. I also thought that it would slow down the rendering of a pane as View determines if each element is face or not. But it is a good way of simplifying a pane and more easily identifying/selecting objects from the pane, so I do use it as the case warrants. Cheers, Allen K

Cyphre wrote:

> Sorry but I don't exactly know how do you mean that. Could you make a little > example?

Aha.The key won't work because of "find-key-face" VID mezanine-function: here is fixed function replacement which solve the bug, I believe RT will fix it in the next release ;) --------------------snip-------------------- find-key-face: func [ "Search faces to determine if keycode applies." face [object!] keycode [char! word!] /local w f result ][ either all [ w: in face 'keycode w: get w any [keycode = w all [block? w find w keycode]] ] [face] [ w: in face 'pane either block? w: get w [ result: none foreach f w [ if word? f [f: get f]; quick-fixed by Cyphre-use at your own risk ;) if all [object? f f: find-key-face f keycode] [result: f break] ] result ] [ if object? :w [find-key-face w keycode] ] ] ] -------------snip------------ Regards, Cyphre