home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Power-Programmierung
/
CD1.mdf
/
magazine
/
nan_news
/
toolkit
/
invclr.prg
< prev
next >
Wrap
Text File
|
1991-08-15
|
3KB
|
78 lines
/*
* File......: InvClr.Prg
* Author....: David Husnian
* Date......: $Date: 15 Aug 1991 23:03:44 $
* Revision..: $Revision: 1.2 $
* Log file..: $Logfile: E:/nanfor/src/invclr.prv $
*
* This is an original work by David Husnian and is placed in the
* public domain.
*
* Modification history:
* ---------------------
*
* $Log: E:/nanfor/src/invclr.prv $
*
* Rev 1.2 15 Aug 1991 23:03:44 GLENN
* Forest Belt proofread/edited/cleaned up doc
*
* Rev 1.1 14 Jun 1991 19:52:00 GLENN
* Minor edit to file header
*
* Rev 1.0 01 Apr 1991 01:01:30 GLENN
* Nanforum Toolkit
*
*/
/* $DOC$
* $FUNCNAME$
* FT_INVCLR()
* $CATEGORY$
* Conversion
* $ONELINER$
* Get the inverse of a color
* $SYNTAX$
* FT_INVCLR( [ <cDsrdColor> ] ) -> cColor
* $ARGUMENTS$
* <cDsrdColor> is the color to get the inverse of. Defaults to
* current color.
* $RETURNS$
* The inverse of the passed color.
* $DESCRIPTION$
* This function inverts a passed color (in the Clipper format: ??/??),
* e.g., "W/N" is converted to "N/W".
* $EXAMPLES$
* cInverse := FT_INVCLR() // Get Inverse of Current Color
* cInvErr := FT_INVCLR( cErrColor ) // Get Inverse of cErrorColor
* $END$
*/
#Command DEFAULT <Param1> TO <Def1> [, <ParamN> TO <DefN> ] ;
=> ;
<Param1> := IF(<Param1> == NIL,<Def1>,<Param1>) ;
[; <ParamN> := IF(<ParamN> == NIL,<DefN>,<ParamN>)]
#define NULL ""
FUNCTION FT_INVCLR(cDsrdColor)
LOCAL cBackground, ; // The Background Color, New Foreground
cForeground, ; // The Foreground Color, New Background
cModifiers // Any Color Modifiers (+*)
DEFAULT cDsrdColor TO SETCOLOR()
// Remove Anything Past 1st Color
cDsrdColor := LEFT(cDsrdColor, AT(",", cDsrdColor+",")-1)
// Get Any Modifiers
cModifiers := IF("*" $ cDsrdColor, "*", NULL) + ;
IF("+" $ cDsrdColor, "+", NULL)
// Separate the Fore/Background Colors
cForeground := ALLTRIM(LEFT(cDsrdColor, AT("/", cDsrdColor) - 1))
cBackground := ALLTRIM(SUBSTR(cDsrdColor, AT("/", cDsrdColor) + 1))
RETURN (STRTRAN(STRTRAN(cBackground, "+"), "*") + cModifiers + "/" + ;
STRTRAN(STRTRAN(cForeground, "+"), "*"))