World: r3wp

Minor update to ARROW360 style:

- Now it's smoother (more is calculated with decimal! instead of 
pair!)
(also updated the demo file).

load-thru/update http://anton.wildit.net.au/rebol/gui/arrow360.r

do-thru/update http://anton.wildit.net.au/rebol/gui/demo-arrow360.r

there is one small "bug". When you move arrow close enough to the 
top or to the left window border, underlying content moves some 1-2 
pixels?

Bleh, I used to know this...  I can't seem to get 'draw to work with 
text - is there something wrong with this?

view layout [box 200x100 effect [draw [pen black text 10x10 {Testing}]]]

Linux?

and 10x10 is very small

works on windows for me

http://www.compkarori.com/vanilla/display/AGG

yeah, on linux..  /view version 2.7.5

10x10 should be the offset

Ah, thanks - that font thing makes it work

Pekr, yes. That is a View rendering bug, not a bug of arrow360 in 
particular.

Two pixels:

It can be seen with just:

view layout [text "Will be moved up 2 pixels" pad 28x-50 box effect 
[merge luma -20]]

A quite old bug, if I remember correctly.

Text is only moved up one pixel here.

Is it in RAMBO?

Probably the same root as this bug report.

http://www.rebol.net/cgi-bin/rambo.r?id=4269&

I'm toying around with a VID dialect for postscript. I've done that 
by copying the VID source for LAYOUT, STYLIZE and all related functions 
in the SYSTEM/VIEW/VID. So far so good, but now I want to implement 
styles, so I can write some layouts and am wondering what the formal 
way would be to add the very first style in what is equivalent to 
SYSTEM/VIEW/VID/VID-STYLES ?

Hmm.. interesting. Do you have a base object (eg. similar to svv/vid-face 
?)

Not familiar with postscript, I am wondering why you couldn't just 
make a function "to-postscript" that accepts a face argument (similar 
to to-image), instead of reimplementing all of VID.

yes, I have a base face similar to vid-face. I even added it to the 
style list manually to see if that would work, but it doesn't.

Anton, good idea.

Anton, thanks. Now it's moving forward. Got some primitive face renderings 
in postscript now.

I suppose you would be cloning face/color, face/text, face/edge rendering 
(whatever you need first) at a simple level, and gradually improving 
it towards perfection afterwards.

My biggest problem right now is the coordinate system, vertical positioning 
of text and text wrapping. The rest is almost in place.

http://rebol.hmkdesign.dk/files/vid-postscript.png<--- so far so 
good :-)

(I wish I had thought of this sooner!)

That looks like fun, Henrik.

I've already fixed top/middle/bottom alignment. Text is placed a 
couple of mm too far to the right.

I suppose you don't know how to do the equivalent of SIZE-TEXT in 
postscript yet.

Actually I rely fully on VID's coordinate system. SIZE-TEXT in PS 
is apparently only possible on the width of the text, not the height, 
which is why just I use VID instead. It seems to work fine, if we 
can live with integer positioning.

Mmm. The font rendering looks nicer.

text wrapping is a different problem...

Ah yes, I see.

Remembering from amacleod's multi-highlight problem, detecting where 
wraps are in a text box might be buried in some natives that we can't 
get to.

I solved that in caret-to-offset-patch.r

It behaves very very close to native (except efficiency), so should 
be usable for this situation.

http://anton.wildit.net.au/rebol/patch/caret-to-offset-patch.r

thanks, I'll have a look

and the test file to do is test-caret-to-offset-patch.r

If you want to save yourself literally days of reverse engineering...

so you essentially rebuild caret-to-offset as a mezzanine?

Yep, and offset-to-caret, too.

Too deep for me to solve that tonight. However I've come this far:

http://rebol.hmkdesign.dk/files/vid-postscript2.png

if you track the font size, then you have the vertical size of the 
text.

Improving... How fast can it render the postscript ? Can you make 
it dynamic update ?

Graham, the relationship between font/size and lineheight is not 
so simple, unfortunately.

in postscript ...