Table of Contents
Introduction
Installation
Handling Challenger
Virtual Servers
Configuration Examples
Modules
Filesystems
RXML Tags
Graphics
Proxy
Databases
Miscellaneous Modules
Security Considerations
Scripting
Frontpage
Upgrading
Third Party Extensions
Portability
Reporting Bugs
Appendix
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Graphical Text
This module defines the <gtext> tag that renders text into
GIF images. For more information see the gtext page in the User
manual.
- Cache directory for gtext images
-
Where to save the generated images. All generated images are saved for
a while since they will usually be referred to more than once.
- Default number of colors per image
-
The default number of colors to use, 16 is usually sufficient. The
size of the image will depend on the number of colors.
- Normalize colors in parsed tags
-
Challenger can handle colors in many different formats, RGB (#rrggbb),
CMYK (@c,m,y,k) and as English words (black). Not all versions of
browsers support those color formats. If this variable is set the
gtext module will convert the colors in the HTML tags
specified in the Tags to parse for color variable to the RGB
format (#rrggbb).
- Tags to parse for color
-
When rendering an image it is important to know the background
color. The gtext module can try to find out the
background color by parsing HTML tags where you can set background
color. This way the user does not have to explicitly set the
background in the <gtext> tag. On the other hand, parsing all
those tags will use quite a lot of CPU. Often more CPU than the
actual image generation, since every one of these tags will be parsed
for every RXML page, regardless of whether there are any
<gtext> tags on the page or not.
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