diff options
Diffstat (limited to 'libX11/src/xcms/XYZ.c')
-rw-r--r-- | libX11/src/xcms/XYZ.c | 406 |
1 files changed, 203 insertions, 203 deletions
diff --git a/libX11/src/xcms/XYZ.c b/libX11/src/xcms/XYZ.c index 40d6ed3bb..82215478b 100644 --- a/libX11/src/xcms/XYZ.c +++ b/libX11/src/xcms/XYZ.c @@ -1,203 +1,203 @@ - -/* - * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc. - * All Rights Reserved - * - * This file is a component of an X Window System-specific implementation - * of XCMS based on the TekColor Color Management System. Permission is - * hereby granted to use, copy, modify, sell, and otherwise distribute this - * software and its documentation for any purpose and without fee, provided - * that this copyright, permission, and disclaimer notice is reproduced in - * all copies of this software and in supporting documentation. TekColor - * is a trademark of Tektronix, Inc. - * - * Tektronix makes no representation about the suitability of this software - * for any purpose. It is provided "as is" and with all faults. - * - * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE, - * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - * PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY - * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER - * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF - * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE. - * - * - * - * NAME - * CIEXYZ.c - * - * DESCRIPTION - * CIE XYZ Color Space - * - * - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <X11/Xos.h> -#include "Xlibint.h" -#include "Xcmsint.h" -#include "Cv.h" - -#include <stdio.h> /* sscanf */ - -/* - * DEFINES - * Internal definitions that need NOT be exported to any package - * or program using this package. - */ -#ifdef DBL_EPSILON -# define XMY_DBL_EPSILON DBL_EPSILON -#else -# define XMY_DBL_EPSILON 0.00001 -#endif - -/* - * FORWARD DECLARATIONS - */ -static int CIEXYZ_ParseString(register char *spec, XcmsColor *pColor); - -/* - * LOCALS VARIABLES - */ - -static XcmsConversionProc Fl_CIEXYZ_to_CIEXYZ[] = { - NULL -}; - - - -/* - * GLOBALS - * Variables declared in this package that are allowed - * to be used globally. - */ - /* - * CIE XYZ Color Space - */ -XcmsColorSpace XcmsCIEXYZColorSpace = - { - _XcmsCIEXYZ_prefix, /* prefix */ - XcmsCIEXYZFormat, /* id */ - CIEXYZ_ParseString, /* parseString */ - Fl_CIEXYZ_to_CIEXYZ, /* to_CIEXYZ */ - Fl_CIEXYZ_to_CIEXYZ, /* from_CIEXYZ */ - 1 - }; - - -/************************************************************************ - * * - * PRIVATE ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * CIEXYZ_ParseString - * - * SYNOPSIS - */ -static int -CIEXYZ_ParseString( - register char *spec, - XcmsColor *pColor) -/* - * DESCRIPTION - * This routines takes a string and attempts to convert - * it into a XcmsColor structure with XcmsCIEXYZFormat. - * The assumed CIEXYZ string syntax is: - * CIEXYZ:<X>/<Y>/<Z> - * Where X, Y, and Z are in string input format for floats - * consisting of: - * a. an optional sign - * b. a string of numbers possibly containing a decimal point, - * c. an optional exponent field containing an 'E' or 'e' - * followed by a possibly signed integer string. - * - * RETURNS - */ -{ - int n; - char *pchar; - - if ((pchar = strchr(spec, ':')) == NULL) { - return(XcmsFailure); - } - n = (int)(pchar - spec); - - /* - * Check for proper prefix. - */ - if (strncmp(spec, _XcmsCIEXYZ_prefix, n) != 0) { - return(XcmsFailure); - } - - /* - * Attempt to parse the value portion. - */ - if (sscanf(spec + n + 1, "%lf/%lf/%lf", - &pColor->spec.CIEXYZ.X, - &pColor->spec.CIEXYZ.Y, - &pColor->spec.CIEXYZ.Z) != 3) { - char *s; /* Maybe failed due to locale */ - int f; - if ((s = strdup(spec))) { - for (f = 0; s[f]; ++f) - if (s[f] == '.') - s[f] = ','; - else if (s[f] == ',') - s[f] = '.'; - if (sscanf(s + n + 1, "%lf/%lf/%lf", - &pColor->spec.CIEXYZ.X, - &pColor->spec.CIEXYZ.Y, - &pColor->spec.CIEXYZ.Z) != 3) { - free(s); - return(XcmsFailure); - } - free(s); - } else - return(XcmsFailure); - } - pColor->format = XcmsCIEXYZFormat; - pColor->pixel = 0; - return(_XcmsCIEXYZ_ValidSpec(pColor)); -} - - -/************************************************************************ - * * - * PUBLIC ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * XcmsCIELab_ValidSpec - * - * SYNOPSIS - */ -Status -_XcmsCIEXYZ_ValidSpec( - XcmsColor *pColor) -/* - * DESCRIPTION - * Checks if color specification valid for CIE XYZ - * - * RETURNS - * XcmsFailure if invalid, - * XcmsSuccess if valid. - * - */ -{ - if (pColor->format != XcmsCIEXYZFormat - || - (pColor->spec.CIEXYZ.Y < 0.0 - XMY_DBL_EPSILON) - || - (pColor->spec.CIEXYZ.Y > 1.0 + XMY_DBL_EPSILON)) { - return(XcmsFailure); - } - return(XcmsSuccess); -} +
+/*
+ * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.
+ * All Rights Reserved
+ *
+ * This file is a component of an X Window System-specific implementation
+ * of XCMS based on the TekColor Color Management System. Permission is
+ * hereby granted to use, copy, modify, sell, and otherwise distribute this
+ * software and its documentation for any purpose and without fee, provided
+ * that this copyright, permission, and disclaimer notice is reproduced in
+ * all copies of this software and in supporting documentation. TekColor
+ * is a trademark of Tektronix, Inc.
+ *
+ * Tektronix makes no representation about the suitability of this software
+ * for any purpose. It is provided "as is" and with all faults.
+ *
+ * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
+ * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
+ *
+ *
+ *
+ * NAME
+ * CIEXYZ.c
+ *
+ * DESCRIPTION
+ * CIE XYZ Color Space
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xos.h>
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+#include <stdio.h> /* sscanf */
+
+/*
+ * DEFINES
+ * Internal definitions that need NOT be exported to any package
+ * or program using this package.
+ */
+#ifdef DBL_EPSILON
+# define XMY_DBL_EPSILON DBL_EPSILON
+#else
+# define XMY_DBL_EPSILON 0.00001
+#endif
+
+/*
+ * FORWARD DECLARATIONS
+ */
+static int CIEXYZ_ParseString(register char *spec, XcmsColor *pColor);
+
+/*
+ * LOCALS VARIABLES
+ */
+
+static XcmsConversionProc Fl_CIEXYZ_to_CIEXYZ[] = {
+ NULL
+};
+
+
+
+/*
+ * GLOBALS
+ * Variables declared in this package that are allowed
+ * to be used globally.
+ */
+ /*
+ * CIE XYZ Color Space
+ */
+XcmsColorSpace XcmsCIEXYZColorSpace =
+ {
+ _XcmsCIEXYZ_prefix, /* prefix */
+ XcmsCIEXYZFormat, /* id */
+ CIEXYZ_ParseString, /* parseString */
+ Fl_CIEXYZ_to_CIEXYZ, /* to_CIEXYZ */
+ Fl_CIEXYZ_to_CIEXYZ, /* from_CIEXYZ */
+ 1
+ };
+
+
+/************************************************************************
+ * *
+ * PRIVATE ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * CIEXYZ_ParseString
+ *
+ * SYNOPSIS
+ */
+static int
+CIEXYZ_ParseString(
+ register char *spec,
+ XcmsColor *pColor)
+/*
+ * DESCRIPTION
+ * This routines takes a string and attempts to convert
+ * it into a XcmsColor structure with XcmsCIEXYZFormat.
+ * The assumed CIEXYZ string syntax is:
+ * CIEXYZ:<X>/<Y>/<Z>
+ * Where X, Y, and Z are in string input format for floats
+ * consisting of:
+ * a. an optional sign
+ * b. a string of numbers possibly containing a decimal point,
+ * c. an optional exponent field containing an 'E' or 'e'
+ * followed by a possibly signed integer string.
+ *
+ * RETURNS
+ */
+{
+ int n;
+ char *pchar;
+
+ if ((pchar = strchr(spec, ':')) == NULL) {
+ return(XcmsFailure);
+ }
+ n = (int)(pchar - spec);
+
+ /*
+ * Check for proper prefix.
+ */
+ if (strncmp(spec, _XcmsCIEXYZ_prefix, n) != 0) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * Attempt to parse the value portion.
+ */
+ if (sscanf(spec + n + 1, "%lf/%lf/%lf",
+ &pColor->spec.CIEXYZ.X,
+ &pColor->spec.CIEXYZ.Y,
+ &pColor->spec.CIEXYZ.Z) != 3) {
+ char *s; /* Maybe failed due to locale */
+ int f;
+ if ((s = strdup(spec))) {
+ for (f = 0; s[f]; ++f)
+ if (s[f] == '.')
+ s[f] = ',';
+ else if (s[f] == ',')
+ s[f] = '.';
+ if (sscanf(s + n + 1, "%lf/%lf/%lf",
+ &pColor->spec.CIEXYZ.X,
+ &pColor->spec.CIEXYZ.Y,
+ &pColor->spec.CIEXYZ.Z) != 3) {
+ free(s);
+ return(XcmsFailure);
+ }
+ free(s);
+ } else
+ return(XcmsFailure);
+ }
+ pColor->format = XcmsCIEXYZFormat;
+ pColor->pixel = 0;
+ return(_XcmsCIEXYZ_ValidSpec(pColor));
+}
+
+
+/************************************************************************
+ * *
+ * PUBLIC ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * XcmsCIELab_ValidSpec
+ *
+ * SYNOPSIS
+ */
+Status
+_XcmsCIEXYZ_ValidSpec(
+ XcmsColor *pColor)
+/*
+ * DESCRIPTION
+ * Checks if color specification valid for CIE XYZ
+ *
+ * RETURNS
+ * XcmsFailure if invalid,
+ * XcmsSuccess if valid.
+ *
+ */
+{
+ if (pColor->format != XcmsCIEXYZFormat
+ ||
+ (pColor->spec.CIEXYZ.Y < 0.0 - XMY_DBL_EPSILON)
+ ||
+ (pColor->spec.CIEXYZ.Y > 1.0 + XMY_DBL_EPSILON)) {
+ return(XcmsFailure);
+ }
+ return(XcmsSuccess);
+}
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