cc.icon,
default icon
File type to icon mapping rules
(graphical interface)
SYNOPSIS
file-type [
file-type ...
] :
icon-name ; . . .
DESCRIPTION
An icon file contains an ordered set of rules
that maps file types to names of bitmap files, which contain icon bitmaps.
In xclearcase,
a file browser uses a series of lookups to determine how to represent a file
system object:
- It
searches one or more magic files to determine the list of file types for the
file system object. (See the cc.magic reference
page for details.)
- It
searches one or more icon files for a match with the first file type. Finding
a match yields the name of a bitmap file. For example, this entry maps the
file type text_file to the icon bitmap file name text:
text_file : -icon text ;
- The
semicolon (;) that terminates an icon rule
must be preceded by white space.
- If
no match can be found for the first file type, xclearcase searches
the same set of icon files for a match with the second file type, and so on
through the entire list of file types, if necessary. (If none of the file
types produces a match in any icon file, an error occurs.)
- Having
determined the name of a bitmap file, xclearcase searches
for an actual file in one or more directories that contain bitmap files. (If
it cannot locate a bitmap file with this name, an error occurs.)
- Bitmap
file names must have a numeric extension, indicating the size of the bitmap.
For example, text.40. xclearcase selects
that bitmap file whose name begins with the string specified by –icon and
whose size is 40x40 pixels.
If the file system object is selected, this
process includes an extra step: xclearcase tries
to match a –selected icon rule for each relevant file
type before accepting a bitmap specified by –icon.
For example, the following rule specifies both generic and “when selected”
icons for use with elements of type text_file:
Selecting and deselecting a text_file object
from a file browser switches between the two icons.
Search Paths
ClearCase and ClearCase LT support search
paths both for icon files and for bitmap files:
- Icon file search path. If ICON_PATH is
set in your environment (to a colon-separated list of directories), xclearcase searches files with a .icon extension
in these directories. In each directory, files are processed in alphabetical
order. As soon as a matching rule is found, the search ends; thus, if multiple
rules match a file type, the first rule encountered is used.
If ICON_PATH is
not set, this default search path is used:
- Bitmap file search path. If BITMAP_PATH is
set in your environment (to a colon-separated list of directories), xclearcase searches for bitmap files with a .40 suffix
in these directories.
If BITMAP_PATH is
not set, this default search path is used:
EXAMPLES
- For
file type c_source, use the icon file named c.
When a c_source element is selected, use the icon
file c_select.
- For
file type postscript, use the icon file named ps.