At the location /internal-roxen-* in your webserver you'll
find some images which are always available to be included in image
tags and the like. The most useful of these are /internal-roxen-unit,
which is a 1x1 pixels big transparent GIF image. Small transparent
images are often used by HTML layout designers to create spaces
between other elements.
internal-roxen-pixel
At the location /internal-roxen-pixel-* you'll find a 1x1
nontransparent pixel in the selected color. Examples are
/internal-roxen-pixel-blue or
/internal-roxen-pixel-ff34c0. The colors are decoded as
describe in Color attributes.
Bitmap Files
All images that reside in the directory server/roxen-images in your
Roxen WebServer distribution is available through
/internal-roxen-*. All the images available in the
server/roxen-images/dir directory is available through
/internal-gopher-*. E.g. if you want to put the image
help.gif on your page, just use <img src="/internal-roxen-help"
/>. Note that the look of the images as well as the contents
of server/roxen-images may vary.
The following images will always exist with the same look and size:
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/internal-roxen-colsel
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/internal-roxen-colsel-small
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/internal-roxen-squares
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The following images will always exist, but may change in appearence.
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/internal-gopher-binary
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/internal-gopher-image
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/internal-gopher-menu
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/internal-gopher-movie
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/internal-gopher-sound
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/internal-gopher-text
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/internal-gopher-unknown
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/internal-roxen-help
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/internal-roxen-pike
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/internal-roxen-power
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/internal-roxen-roxen
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Color selector
In order to easily create a multistage color selection widget you
can acces automatically generated saturation bars through the
/internal-roxen-colorbar URL.
/internal-roxen-colorbar:h,b,w returns a 30x256 pixels big
color bar with the hue h,the brightness b and a white marker at the
location w, 0 being the bottom and 255 the top. The interval for all
three variables are 0-255. The intended use is to first present the
user with a two-dimensional hue/brightness selector, as shown above.
The selected combination is then used as basis for which colorbar to
show, where the user can selected the preferred saturation.
<for variable="var.i" from="0" to="255" step="24">
<img border="1" src="/internal-roxen-colorbar:&var.i;,255,&var.i;" />
</for> |
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The code above will generate the 11 colorbars shown below. All of
them has brighness set to 255, but their hue will range from 0 to 255
in with steps of 24.
