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.
/internal-roxen-unit
One commonly used image is /internal-roxen-unit
which is a 1x1 pixel transparent GIF image. Small transparent
images are often used by HTML layout designers to create spaces
between other elements.
/internal-roxen-pixel-color
At the location /internal-roxen-pixel-color you'll find a 1x1
non-transparent 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, though not all syntax variants are
applicable to URLs (for instance, leave out # for the RGB format as seen in
the example earlier).
/internal-roxen-spinner-color
Similarly, by requesting /internal-roxen-spinner-color you will
get an animated GIF image that spins indefinitely with the provided color as the
background color. For example, /internal-roxen-spinner-blue or
/internal-roxen-spinner-ff34c0.
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.
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.
