How about if I replace this section with this:
To specify any color other than the 16 which are usable by name, use
hex codes or rgb().
<canvas height="150">
<simplelayout axis="y"/>
<text>using hex values</text>
<view>
<simplelayout axis="x"/>
<view width="50" height="50" bgcolor="#220099"/>
<view width="50" height="50" bgcolor="#770011"/>
<view width="50" height="50" bgcolor="#0022ff"/>
<view width="50" height="50" bgcolor="#ff2200"/>
<view width="50" height="50" bgcolor="#00ff22"/>
</view>
<text>same thing using rgb()</text>
<view>
<simplelayout axis="x"/>
<view width="50" height="50" bgcolor="rgb(34,0,153)"/>
<view width="50" height="50" bgcolor="rgb(119,0,17)"/>
<view width="50" height="50" bgcolor="rgb(0,34,255)"/>
<view width="50" height="50" bgcolor="rgb(255,34,0)"/>
<view width="50" height="50" bgcolor="rgb(0,255,34)"/>
</view>
</canvas>
On Nov 19, 2008, at 9:52 AM, P T Withington wrote:
Yes, let's stop using these non-standard names. Let's not advertise
them. If you want a 'custom' color, you should specify it with hex
or rgb. I am told that is what our designers do.
I plan to remove colors.lzx, it is a pile of crap. If you look at
it, you will see that it has only a few names, which are names from
the X11 standard, but the names are assigned to colors that are
_not_ what the X11 standard uses! I really think this was just
pulled from thin air as a demo and does not deserve to be enshrined
in our doc or system.
If we want to use named colors, we out to use the standard names and
values, not make up something random.
Since I plan to fix lpp-7365 by deleting colors.lzx, you would do me
a favor if you deleted any examples based on it.
On 2008-11-19, at 08:00EST, Lou Iorio wrote:
Since this example is about using nonstandard colors, using the
standard colors
"yellow" and "aqua" does not make much sense.
Should we just drop the entire section "Non-Standard Colors", or
confine it to mentioning hex
values only? From my (perhaps naive) view, hex is the best way to
specify color, standard or
otherwise. "iceblue" looks blue to me, but nothing like ice.
On Nov 18, 2008, at 3:43 PM, P T Withington wrote:
See my comment on the bug you just filed.
Lets stop using the non-standard names from base/colors.lzx
altogether. They are bogus. For this example, how about just
using `yellow` and `aqua`.
Sorry this is such a mess.
On 2008-11-18, at 14:31EST, J Crowley wrote:
Hrmm, including base/colors.lzx doesn't get this to work in
DHTML. I filed a bug on this, but Andre said (in http://www.openlaszlo.org/pipermail/laszlo-dev/2008-November/018145.html
) it could be fixed by including base/colors.lzx, but that
doesn't seem to work... Any ideas?
P T Withington wrote:
I appended our email as a comment.
On 2008-11-18, at 12:33EST, Lou Iorio wrote:
I see there is a JIRA for this and Josh owns it.
http://www.openlaszlo.org/jira/browse/LPP-7194
On Nov 18, 2008, at 7:42 AM, Lou Iorio wrote:
So in this broken example in the dguide (I think Josh is
working on it, but
I want to make sure I understand):
<canvas debug="true">
<simplelayout axis="x" spacing="10"/>
<class name="box1" width="100" height="100" bgcolor="$
{global['gold4']}"/>
<class name="box2" width="100" height="100" bgcolor="$
{iceblue1}"/>
<box1 id="sun">
<text text="Sun"/>
</box1>
<box2 id="mystic">
<text fgcolor="0xFFFFFF" text="Mystic"/>
</box2>
</canvas>
You need to change the class tags:
<class name="box1" width="100" height="100" bgcolor="gold4"/>
<class name="box2" width="100" height="100" bgcolor="iceblue1"/>
But this only works because the debugger is on, and that
includes the extra colors.
If you turn the debugger off, the example displays the wrong
colors. You then need
to add this:
<include href="base/colors.lzx"/>
for the example to work.
I don't see a JIRA for this. If I'm correct, I'll file a JIRA
and fix the example and
the paragraph that introduces it.
On Nov 16, 2008, at 10:11 AM, P T Withington wrote:
Probably so.
Amusingly, for your little example that we worked on, since
it includes a slider, you get all those colors. I think if
you include _any_ component, you get all the extra colors,
but if you just try to use one of those extra colors on a
plain view, you will lose (unless you happen to be in debug
mode, in which case the debugger will have included them for
you). Messy.
On 2008-11-16, at 07:05EST, Lou Iorio wrote:
On Nov 15, 2008, at 6:52 PM, P T Withington wrote:
If you load base/colors.lzx, it defines a whole bunch of
colors (adds them to lz.colors). Once that is loaded, you
can, in fact, specify colors using those names.
Ah, thanks, I didn't know that. Perhaps I should add that to
the dguide?
André has pointed out that when you turn debugging on in
swf8 or 9, the debugger gets loaded into your app, and it
happens to load these extra colors. So, by accident, you
can use these colors in debug mode in swf8/9 (this is one
of the many problems with running the debugger in the app,
which is why I did not do it that way for dhtml, and why we
have the 'console remote debug' option for swf8/9. If you
run the demo app in either dhtml or with the console
debugger, you will see only the standard CSS color names.
The upshot is, if you want a demo that uses these extended
color names, you need to make your demo include the base/
colors.lzx file.
As to the names of the colors in that file, I believe they
are psuedo-standard, they might be from emacs, who knows.
I did not create that file.
On 2008-11-15, at 04:48EST, Lou Iorio wrote:
I concede to your technical prowess. But I still contend
that what I was looking for here is the hex value.
I can't use "gray20" to specify a color in lzx, right? I'm
a bit leery of "psuedo-standards".
In addition, why is there no red20, green20 or blue20?
I'm not suggesting that you change anything, and I'm not
trying to be difficult, I'm just curious.
On Nov 14, 2008, at 7:33 PM, P T Withington wrote:
Uh, because 20% gray has a technical meaning:
rgb(256*(1-20/100),256*(1-20/100),256*(1-20/100)) or
lab(1-20/100,0,0), or hsb(0,0,20), or #333333, etc., but
it much shorter to think/say when you want a gray with a
certain brightness.
On 2008-11-14, at 18:06EST, Lou Iorio wrote:
Sure, but what do I care what someone chose to define as
20% gray? What does that even mean?
20% gray, and 80% what else? Any color where the r, g,
and b values are the same is gray. Why pick
an integer percent and name it?
As I said, I'm old; I still think in hex. (And, I still
call it 'grey'.)
On Nov 14, 2008, at 6:49 PM, P T Withington wrote:
Well, as I said in my TODO, there needs to be a way,
for a type like color, for you to say what your
preferred presentation is. Like maybe you should be
allowed to say something like 'color(rgb)' or
'color(#)' or 'color(token,#)' or something... We
could get really carried away!
I'm pretty sure gray20 is '20% gray' and a psuedo-
standard color name.
On 2008-11-14, at 17:38EST, Lou Iorio wrote:
I also noticed several "gray" colors showing up. Cute,
but I'm not sure I like it.
gray 20, for example, seems completely arbitrary. For
me, I really want to see
the hex values. But then, I'm old.
On Nov 14, 2008, at 6:31 PM, P T Withington wrote:
'data' is historical, because that was the original
application for setting/getting string versions of a
value, but now we see there are more general reasons
to do that.
Isn't it cute how 0 becomes 'black' and 0xffffff
becomes 'white'? If you are very careful, you can
set the slider to some other named colors...
Gee, it would be fun to have a 'digital' slider that
only let you pick named colors. Hm...
On 2008-11-14, at 17:10EST, Lou Iorio wrote:
I like it mucho. The example works just as I intended.
From a purely subjective point of view, I like
'present' and 'accept'.
The "Data" part seems extraneous.
Lou
On Nov 14, 2008, at 5:43 PM, P T Withington wrote:
My fixes are in. Update, rebuild and try this and
see if you like it:
<canvas>
<simplelayout spacing="5"/>
<view id="swatch" width="300" height="100"
bgcolor="${color.value}" />
<view id="sliders">
<simplelayout />
<slider id="color" width="300" value="0"
minvalue="0" maxvalue="0xffffff" type="color" />
<text text="${color.updateData()}" />
</view>
</canvas>
`updateData` is probably not the most mnemonic name
for how to get a string representation of the
slider's value according to the type (in this case
'color'). The inverse is called `applyData`, it
takes a string representation and tries to parse it
according to the type. `presentValueAsString` /
`acceptValueFromString` seem too ponderous.
Perhaps simply `present` and `accept`? I'd
appreciate your input.
On 2008-11-14, at 09:42EST, Lou Iorio wrote:
On Nov 13, 2008, at 1:17 PM, P T Withington wrote:
Basically, using '0x000000' in CSS was a kludge,
non-standard, and probably should have been
documented as such. It will cause a deprecation
warning.
Any of the other 3 methods are standard,
acceptable, and work.
It would be fine with me if we just said that you
specified colors the same as the CSS standard.
You can specify your color as a numeric value
also, the result of a computation, it doesn't
need to be expressed as a hex constant.
I'll add this to the chapter. I'd like to include
a simple example:
<?xml version="1.0" encoding="UTF-8"?>
<canvas>
<simplelayout spacing="5"/>
<view id="swatch" width="300" height="100"
bgcolor="${color.value}" />
<view id="sliders">
<simplelayout />
<slider id="color" width="300" value="0"
minvalue="0" maxvalue="16777215"/>
<text text="${color.value}" />
</view>
</canvas>
Is this worth including? My intent for the last
<text> tag was to print the hex equivalent
of the slider value, but I can't figure out how to
do that. I tried:
<text text="${color.value.toString(16)}" />
but that doesn't work. Any ideas? Better example?
Thanks,
Lou
On 2008-11-13, at 08:49EST, Lou Iorio wrote:
The text preceding Example 20.3. Coloring text
using CSS seems to completely contradict what
the example shows.
The text says:
OpenLaszlo enables coloring in four ways:
0x000000, #000000, rgb(0,0,0), and "black". For
now, the best reason to prefer to use the hex
style 0x000000 is that it always works, whether
the color is assigned explicitly within the
view, or by stylesheet. Color assignment by
stylesheet fails by name, #hex, or rgb().
Explicit color assignment by rgb() fails unless
the RGB values are all numerals -- that is,
rgb(0,0,0) produces black, but rgb(FF,FF,FF),
which should produce white, comes back at
compile time as an invalid color.
Coloring of text with fgcolor="foo" is enabled
in the same fashions, but with the same
limitations.
CSS spits out an error if you use 0x000000. How
about:
OpenLaszlo enables coloring in four ways:
0x000000, #000000, rgb(0,0,0), and "black".
Using the format 0x000000 only works for
explicit assignment; it does not work in CSS.
Color assignment using rgb() must be specified
with decimal values from 0 - 255.
Coloring of text with fgcolor="foo" is enabled
in the same fashions, but with the same
limitations.
In addition, the title of the example, "Coloring
text using CSS", might be better if changed to
"Applying color explictly and with CSS" since it
shows coloring views as well as text.
If you agree (or have a better idea), I'll make
the changes.
Lou
