Internal Images

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:

/internal-roxen-colsel
/internal-roxen-colsel-small
/internal-roxen-squares

The following images will always exist, but may change in appearence.

/internal-gopher-binary
/internal-gopher-image
/internal-gopher-menu
/internal-gopher-movie
/internal-gopher-sound
/internal-gopher-text
/internal-gopher-unknown
/internal-roxen-help
/internal-roxen-pike
/internal-roxen-power
/internal-roxen-roxen

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>

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.