aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/lib/src/xcms/cmsColNm.c
diff options
context:
space:
mode:
Diffstat (limited to 'nx-X11/lib/src/xcms/cmsColNm.c')
-rw-r--r--nx-X11/lib/src/xcms/cmsColNm.c1050
1 files changed, 1050 insertions, 0 deletions
diff --git a/nx-X11/lib/src/xcms/cmsColNm.c b/nx-X11/lib/src/xcms/cmsColNm.c
new file mode 100644
index 000000000..c6f1e0f31
--- /dev/null
+++ b/nx-X11/lib/src/xcms/cmsColNm.c
@@ -0,0 +1,1050 @@
+
+/*
+ * 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
+ * XcmsColNm.c
+ *
+ * DESCRIPTION
+ * Source for _XcmsLookupColorName().
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include <nx-X11/Xos.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <limits.h>
+#define XK_LATIN1
+#include <nx-X11/keysymdef.h>
+#include "Cv.h"
+
+/* forwards/locals */
+static Status LoadColornameDB(void);
+
+
+/*
+ * LOCAL DEFINES
+ * #define declarations local to this package.
+ */
+#ifndef XCMSDB
+#define XCMSDB XCMSDIR "/Xcms.txt"
+#endif
+
+#ifndef isgraph
+# define isgraph(c) (isprint((c)) && !isspace((c)))
+#endif
+
+#ifndef XCMSDB_MAXLINELEN
+# define XCMSDB_MAXLINELEN 256
+#endif
+
+#define FORMAT_VERSION "0.1"
+#define START_TOKEN "XCMS_COLORDB_START"
+#define END_TOKEN "XCMS_COLORDB_END"
+#define DELIM_CHAR '\t'
+
+#define NOT_VISITED 0x0
+#define VISITED 0x1
+#define CYCLE 0xFFFF
+#define XcmsDbInitNone -1
+#define XcmsDbInitFailure 0
+#define XcmsDbInitSuccess 1
+
+/*
+ * LOCAL TYPEDEFS
+ */
+typedef struct _XcmsPair {
+ const char *first;
+ const char *second;
+ int flag;
+} XcmsPair;
+
+/*
+ * LOCAL VARIABLES
+ */
+static int XcmsColorDbState = XcmsDbInitNone;
+static int nEntries;
+static char *strings;
+static XcmsPair *pairs;
+static const char whitePtStr[] = "WhitePoint";
+
+
+/************************************************************************
+ * *
+ * PRIVATE ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * _XcmsColorSpaceOfString
+ *
+ * SYNOPSIS
+ */
+static XcmsColorSpace *
+_XcmsColorSpaceOfString(
+ XcmsCCC ccc,
+ const char *color_string)
+/*
+ * DESCRIPTION
+ * Returns a pointer to the color space structure
+ * (XcmsColorSpace) associated with the specified color string.
+ *
+ * RETURNS
+ * Pointer to matching XcmsColorSpace structure if found;
+ * otherwise NULL.
+ *
+ * CAVEATS
+ *
+ */
+{
+ XcmsColorSpace **papColorSpaces;
+ size_t n;
+ char *pchar;
+
+ if ((pchar = strchr(color_string, ':')) == NULL) {
+ return(XcmsFailure);
+ }
+ n = (size_t)(pchar - color_string);
+
+ if (ccc == NULL) {
+ return(NULL);
+ }
+
+ /*
+ * First try Device-Independent color spaces
+ */
+ papColorSpaces = _XcmsDIColorSpaces;
+ if (papColorSpaces != NULL) {
+ while (*papColorSpaces != NULL) {
+ if (strncmp((*papColorSpaces)->prefix, color_string, n) == 0 &&
+ !((*papColorSpaces)->prefix)[n]) {
+ return(*papColorSpaces);
+ }
+ papColorSpaces++;
+ }
+ }
+
+ /*
+ * Next try Device-Dependent color spaces
+ */
+ papColorSpaces = ((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->DDColorSpaces;
+ if (papColorSpaces != NULL) {
+ while (*papColorSpaces != NULL) {
+ if (strncmp((*papColorSpaces)->prefix, color_string, n) == 0 &&
+ !((*papColorSpaces)->prefix)[n]) {
+ return(*papColorSpaces);
+ }
+ papColorSpaces++;
+ }
+ }
+
+ return(NULL);
+}
+
+
+/*
+ * NAME
+ * _XcmsParseColorString
+ *
+ * SYNOPSIS
+ */
+static int
+_XcmsParseColorString(
+ XcmsCCC ccc,
+ const char *color_string,
+ XcmsColor *pColor)
+/*
+ * DESCRIPTION
+ * Assuming color_string contains a numerical string color
+ * specification, attempts to parse a string into an
+ * XcmsColor structure.
+ *
+ * RETURNS
+ * 0 if failed; otherwise non-zero.
+ *
+ * CAVEATS
+ * A color string containing a numerical color specification
+ * must be in ISO Latin-1 encoding!
+ */
+{
+ XcmsColorSpace *pColorSpace;
+ char string_buf[64];
+ char *string_lowered;
+ size_t len;
+ int res;
+
+ if (ccc == NULL) {
+ return(0);
+ }
+
+ /*
+ * While copying color_string to string_lowered, convert to lowercase
+ */
+ if ((len = strlen(color_string)) >= sizeof(string_buf)) {
+ string_lowered = Xmalloc(len+1);
+ } else {
+ string_lowered = string_buf;
+ }
+
+ _XcmsCopyISOLatin1Lowered(string_lowered, color_string);
+
+ if (*string_lowered == '#') {
+ if ((pColorSpace = _XcmsColorSpaceOfString(ccc, "rgb:")) != NULL) {
+ res = (*pColorSpace->parseString)(string_lowered, pColor);
+ if (len >= sizeof(string_buf)) Xfree(string_lowered);
+ return res;
+ }
+ }
+
+ if ((pColorSpace = _XcmsColorSpaceOfString(ccc, string_lowered)) != NULL) {
+ res = (*pColorSpace->parseString)(string_lowered, pColor);
+ if (len >= sizeof(string_buf)) Xfree(string_lowered);
+ return res;
+ }
+
+ if (len >= sizeof(string_buf)) Xfree(string_lowered);
+ return(0);
+}
+
+
+/*
+ * NAME
+ * FirstCmp - Compare color names of pair recs
+ *
+ * SYNOPSIS
+ */
+static int
+FirstCmp(const void *p1, const void *p2)
+/*
+ * DESCRIPTION
+ * Compares the color names of XcmsColorTuples.
+ * This routine is public to allow access from qsort???.
+ *
+ * RETURNS
+ * 0 if equal;
+ * < 0 if first precedes second,
+ * > 0 if first succeeds second.
+ *
+ */
+{
+ return(strcmp(((const XcmsPair *)p1)->first, ((const XcmsPair *)p2)->first));
+}
+
+
+
+/*
+ * NAME
+ * stringSectionSize - determine memory needed for strings
+ *
+ * SYNOPSIS
+ */
+static void
+SetNoVisit(void)
+/*
+ * DESCRIPTION
+ *
+ * RETURNS
+ * void
+ *
+ */
+{
+ int i;
+ XcmsPair *pair = pairs;
+
+ for (i = 0; i < nEntries; i++, pair++) {
+ if (pair->flag != CYCLE) {
+ pair->flag = NOT_VISITED;
+ }
+ }
+}
+
+
+
+
+/*
+ * NAME
+ * field2 - extract two fields
+ *
+ * SYNOPSIS
+ */
+static int
+field2(
+ char *pBuf,
+ char delim, /* in: field delimiter */
+ char **p1, /* in/out: pointer to pointer to field 1 */
+ char **p2) /* in/out: pointer to pointer to field 2 */
+/*
+ * DESCRIPTION
+ * Extracts two fields from a "record".
+ *
+ * RETURNS
+ * XcmsSuccess if succeeded, otherwise XcmsFailure.
+ *
+ */
+{
+ *p1 = *p2 = NULL;
+
+ /* Find Field 1 */
+ while (!isgraph(*pBuf)) {
+ if ((*pBuf != '\n') || (*pBuf != '\0')) {
+ return(XcmsFailure);
+ }
+ if (isspace(*pBuf) || (*pBuf == delim)) {
+ pBuf++;
+ }
+ }
+ *p1 = pBuf;
+
+ /* Find end of Field 2 */
+ while (isprint(*pBuf) && (*pBuf != delim)) {
+ pBuf++;
+ }
+ if ((*pBuf == '\n') || (*pBuf == '\0')) {
+ return(XcmsFailure);
+ }
+ if ((*pBuf == ' ') || (*pBuf == delim)) {
+ *pBuf++ = '\0'; /* stuff end of string character */
+ } else {
+ return(XcmsFailure);
+ }
+
+ /* Find Field 2 */
+ while (!isgraph(*pBuf)) {
+ if ((*pBuf == '\n') || (*pBuf == '\0')) {
+ return(XcmsFailure);
+ }
+ if (isspace(*pBuf) || (*pBuf == delim)) {
+ pBuf++;
+ }
+ }
+ *p2 = pBuf;
+
+ /* Find end of Field 2 */
+ while (isprint(*pBuf) && (*pBuf != delim)) {
+ pBuf++;
+ }
+ if (*pBuf != '\0') {
+ *pBuf = '\0'; /* stuff end of string character */
+ }
+
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * _XcmsLookupColorName - Lookup DB entry for a color name
+ *
+ * SYNOPSIS
+ */
+static Status
+_XcmsLookupColorName(
+ XcmsCCC ccc,
+ const char **name,
+ XcmsColor *pColor)
+/*
+ * DESCRIPTION
+ * Searches for an entry in the Device-Independent Color Name
+ * Database for the specified string.
+ *
+ * RETURNS
+ * XcmsFailure if failed to find a matching entry in
+ * the database.
+ * XcmsSuccess if succeeded in converting color name to
+ * XcmsColor.
+ * _XCMS_NEWNAME if succeeded in converting color string (which
+ * is a color name to yet another color name. Note
+ * that the new name is passed back via 'name'.
+ */
+ {
+ Status retval = 0;
+ char name_lowered_64[64];
+ char *name_lowered;
+ register int i, j, left, right;
+ int len;
+ const char *tmpName;
+ XcmsPair *pair = NULL;
+
+ /*
+ * Check state of Database:
+ * XcmsDbInitNone
+ * XcmsDbInitSuccess
+ * XcmsDbInitFailure
+ */
+ if (XcmsColorDbState == XcmsDbInitFailure) {
+ return(XcmsFailure);
+ }
+ if (XcmsColorDbState == XcmsDbInitNone) {
+ if (!LoadColornameDB()) {
+ return(XcmsFailure);
+ }
+ }
+
+ SetNoVisit();
+
+ /*
+ * While copying name to name_lowered, convert to lowercase
+ */
+
+ tmpName = *name;
+
+Retry:
+ if ((len = strlen(tmpName)) > 63) {
+ name_lowered = Xmalloc(len+1);
+ } else {
+ name_lowered = name_lowered_64;
+ }
+
+ _XcmsCopyISOLatin1Lowered(name_lowered, tmpName);
+
+ /*
+ * Now, remove spaces.
+ */
+ for (i = 0, j = 0; j < len; j++) {
+ if (!isspace(name_lowered[j])) {
+ name_lowered[i++] = name_lowered[j];
+ }
+ }
+ name_lowered[i] = '\0';
+
+ left = 0;
+ right = nEntries - 1;
+ while (left <= right) {
+ i = (left + right) >> 1;
+ pair = &pairs[i];
+ j = strcmp(name_lowered, pair->first);
+ if (j < 0)
+ right = i - 1;
+ else if (j > 0)
+ left = i + 1;
+ else {
+ break;
+ }
+ }
+ if (len > 63) Xfree(name_lowered);
+
+ if (left > right) {
+ if (retval == 2) {
+ if (*name != tmpName) {
+ *name = tmpName;
+ }
+ return(_XCMS_NEWNAME);
+ }
+ return(XcmsFailure);
+ }
+
+ if (pair->flag == CYCLE) {
+ return(XcmsFailure);
+ }
+ if (pair->flag == VISITED) {
+ pair->flag = CYCLE;
+ return(XcmsFailure);
+ }
+
+ if (_XcmsParseColorString(ccc, pair->second, pColor) == XcmsSuccess) {
+ /* f2 contains a numerical string specification */
+ return(XcmsSuccess);
+ } else {
+ /* f2 does not contain a numerical string specification */
+ tmpName = pair->second;
+ pair->flag = VISITED;
+ retval = 2;
+ goto Retry;
+ }
+}
+
+
+/*
+ * NAME
+ * RemoveSpaces
+ *
+ * SYNOPSIS
+ */
+static int
+RemoveSpaces(
+ char *pString)
+/*
+ * DESCRIPTION
+ * Removes spaces from string.
+ *
+ * RETURNS
+ * Void
+ *
+ */
+{
+ int i, count = 0;
+ char *cptr;
+
+ /* REMOVE SPACES */
+ cptr = pString;
+ for (i = strlen(pString); i; i--, cptr++) {
+ if (!isspace(*cptr)) {
+ *pString++ = *cptr;
+ count++;
+ }
+ }
+ *pString = '\0';
+ return(count);
+}
+
+
+/*
+ * NAME
+ * stringSectionSize - determine memory needed for strings
+ *
+ * SYNOPSIS
+ */
+static int
+stringSectionSize(
+ FILE *stream,
+ int *pNumEntries,
+ int *pSectionSize)
+/*
+ * DESCRIPTION
+ * Determines the amount of memory required to store the
+ * color name strings and also the number of strings.
+ *
+ * RETURNS
+ * XcmsSuccess if succeeded, otherwise XcmsFailure.
+ *
+ */
+{
+ char buf[XCMSDB_MAXLINELEN];
+ char token[XCMSDB_MAXLINELEN];
+ char token2[XCMSDB_MAXLINELEN];
+ char *pBuf;
+ char *f1;
+ char *f2;
+ size_t i;
+
+ unsigned int numEntries = 0;
+ unsigned int sectionSize = 0;
+
+ *pNumEntries = 0;
+ *pSectionSize = 0;
+
+ /*
+ * Advance to START_TOKEN
+ * Anything before is just considered as comments.
+ */
+
+ while((pBuf = fgets(buf, XCMSDB_MAXLINELEN, stream)) != NULL) {
+ if ((sscanf(buf, "%s %s", token, token2))
+ && (strcmp(token, START_TOKEN) == 0)) {
+ if (strcmp(token2, FORMAT_VERSION) != 0) {
+ /* text file not in the right format */
+ return(XcmsFailure);
+ }
+ break;
+ } /* else it was just a blank line or comment */
+ }
+
+ if (pBuf == NULL) {
+ return(XcmsFailure);
+ }
+
+ while((fgets(buf, XCMSDB_MAXLINELEN, stream)) != NULL) {
+ if ((sscanf(buf, "%s", token)) && (strcmp(token, END_TOKEN) == 0)) {
+ break;
+ }
+
+ if (field2(buf, DELIM_CHAR, &f1, &f2) != XcmsSuccess) {
+ return(XcmsFailure);
+ }
+
+ numEntries++;
+ if (numEntries >= INT_MAX)
+ return(XcmsFailure);
+
+ i = strlen(f1);
+ if (i >= INT_MAX - sectionSize)
+ return(XcmsFailure);
+ sectionSize += i + 1;
+ for (; i; i--, f1++) {
+ /* REMOVE SPACES FROM COUNT */
+ if (isspace(*f1)) {
+ sectionSize--;
+ }
+ }
+
+ i = strlen(f2);
+ if (i >= INT_MAX - sectionSize)
+ return(XcmsFailure);
+ sectionSize += i + 1;
+ for (; i; i--, f2++) {
+ /* REMOVE SPACES FROM COUNT */
+ if (isspace(*f2)) {
+ sectionSize--;
+ }
+ }
+
+ }
+
+ *pNumEntries = (int) numEntries;
+ *pSectionSize = (int) sectionSize;
+
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * ReadColornameDB - Read the Color Name Database
+ *
+ * SYNOPSIS
+ */
+static Status
+ReadColornameDB(
+ FILE *stream,
+ XcmsPair *pRec,
+ char *pString)
+/*
+ * DESCRIPTION
+ * Loads the Color Name Database from a text file.
+ *
+ * RETURNS
+ * XcmsSuccess if succeeded, otherwise XcmsFailure.
+ *
+ */
+{
+ char buf[XCMSDB_MAXLINELEN];
+ char token[XCMSDB_MAXLINELEN];
+ char token2[XCMSDB_MAXLINELEN];
+ char *f1;
+ char *f2;
+ char *pBuf;
+
+ /*
+ * Advance to START_TOKEN
+ * Anything before is just considered as comments.
+ */
+
+ while((pBuf = fgets(buf, XCMSDB_MAXLINELEN, stream)) != NULL) {
+ if ((sscanf(buf, "%s %s", token, token2))
+ && (strcmp(token, START_TOKEN) == 0)) {
+ if (strcmp(token2, FORMAT_VERSION) != 0) {
+ /* text file not in the right format */
+ return(XcmsFailure);
+ }
+ break;
+ } /* else it was just a blank line or comment */
+ }
+
+ if (pBuf == NULL) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * Process lines between START_TOKEN to END_TOKEN
+ */
+
+ while ((fgets(buf, XCMSDB_MAXLINELEN, stream)) != NULL) {
+ if ((sscanf(buf, "%s", token)) && (strcmp(token, END_TOKEN) == 0)) {
+ /*
+ * Found END_TOKEN so break out of for loop
+ */
+ break;
+ }
+
+ /*
+ * Get pairs
+ */
+ if (field2(buf, DELIM_CHAR, &f1, &f2) != XcmsSuccess) {
+ /* Invalid line */
+ continue;
+ }
+
+ /*
+ * Add strings
+ */
+
+ /* Left String */
+ pRec->first = pString;
+ _XcmsCopyISOLatin1Lowered(pString, f1);
+ pString += (1 + RemoveSpaces(pString));
+ pRec->second = pString;
+ /* Right String */
+ _XcmsCopyISOLatin1Lowered(pString, f2);
+ pString += RemoveSpaces(pString) + 1;
+ pRec++;
+
+ }
+
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * LoadColornameDB - Load the Color Name Database
+ *
+ * SYNOPSIS
+ */
+static Status
+LoadColornameDB(void)
+/*
+ * DESCRIPTION
+ * Loads the Color Name Database from a text file.
+ *
+ * RETURNS
+ * XcmsSuccess if succeeded, otherwise XcmsFailure.
+ *
+ */
+{
+ int size;
+ FILE *stream;
+ const char *pathname;
+ struct stat txt;
+ int length;
+
+ /* use and name of this env var is not part of the standard */
+ /* implementation-dependent feature */
+ if ((pathname = getenv("XCMSDB")) == NULL) {
+ pathname = XCMSDB;
+ }
+
+ length = strlen(pathname);
+ if ((length == 0) || (length >= (BUFSIZ - 5))){
+ XcmsColorDbState = XcmsDbInitFailure;
+ return(XcmsFailure);
+ }
+
+ if (stat(pathname, &txt)) {
+ /* can't stat file */
+ XcmsColorDbState = XcmsDbInitFailure;
+ return(XcmsFailure);
+ }
+
+ if ((stream = _XFopenFile (pathname, "r")) == NULL) {
+ /* can't open file */
+ XcmsColorDbState = XcmsDbInitFailure;
+ return(XcmsFailure);
+ }
+
+ if (stringSectionSize(stream, &nEntries, &size) != XcmsSuccess ||
+ nEntries == 0) {
+ (void) fclose(stream);
+ XcmsColorDbState = XcmsDbInitFailure;
+ return(XcmsFailure);
+ }
+ rewind(stream);
+
+ strings = Xmalloc(size);
+ pairs = Xcalloc(nEntries, sizeof(XcmsPair));
+
+ ReadColornameDB(stream, pairs, strings);
+ (void) fclose(stream);
+
+ /*
+ * sort the pair recs
+ */
+ qsort((char *)pairs, nEntries, sizeof(XcmsPair), FirstCmp);
+
+ XcmsColorDbState = XcmsDbInitSuccess;
+ return(XcmsSuccess);
+}
+
+
+/************************************************************************
+ * *
+ * API PRIVATE ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * _XcmsCopyISOLatin1Lowered
+ *
+ * SYNOPSIS
+ */
+void
+_XcmsCopyISOLatin1Lowered(
+ char *dst,
+ const char *src)
+/*
+ * DESCRIPTION
+ * ISO Latin-1 case conversion routine
+ * Identical to XmuCopyISOLatin1Lowered() but provided here
+ * to eliminate need to link with libXmu.a.
+ *
+ * IMPLEMENTORS NOTE:
+ * This routine is also used in XcmsFormatOfPrefix.
+ *
+ * RETURNS
+ * Void
+ *
+ */
+{
+ register unsigned char *dest;
+ register const unsigned char *source;
+
+ for (dest = (unsigned char *)dst, source = (const unsigned char *)src;
+ *source;
+ source++, dest++)
+ {
+ if ((*source >= XK_A) && (*source <= XK_Z))
+ *dest = *source + (XK_a - XK_A);
+ else if ((*source >= XK_Agrave) && (*source <= XK_Odiaeresis))
+ *dest = *source + (XK_agrave - XK_Agrave);
+ else if ((*source >= XK_Ooblique) && (*source <= XK_Thorn))
+ *dest = *source + (XK_oslash - XK_Ooblique);
+ else
+ *dest = *source;
+ }
+ *dest = '\0';
+}
+
+
+/*
+ * NAME
+ * _XcmsResolveColorString -
+ *
+ * SYNOPSIS
+ */
+Status
+_XcmsResolveColorString (
+ XcmsCCC ccc,
+ const char **color_string,
+ XcmsColor *pColor_exact_return,
+ XcmsColorFormat result_format)
+/*
+ * DESCRIPTION
+ * The XcmsLookupColor function finds the color specification
+ * associated with a color name in the Device-Independent Color
+ * Name Database.
+ * RETURNS
+ * XcmsFailure if failed to convert valid color string.
+ * XcmsSuccess if succeeded in converting color string to
+ * XcmsColor.
+ * _XCMS_NEWNAME if failed to parse the string or find it in
+ * the database, or if succeeded in looking it up and
+ * found another name which is not in the database.
+ * Note that the new name is returned in color_string.
+ *
+ * This function returns both the color specification found in the
+ * database (db specification) and the color specification for the
+ * color displayable by the specified screen (screen
+ * specification). The calling routine sets the format for these
+ * returned specifications in the XcmsColor format component.
+ * If XcmsUndefinedFormat, the specification is returned in the
+ * format used to store the color in the database.
+ */
+{
+ XcmsColor dbWhitePt; /* whitePt associated with pColor_exact_return*/
+ /* the screen's white point */
+ XcmsColor *pClientWhitePt;
+ int retval;
+ const char *strptr = whitePtStr;
+
+/*
+ * 0. Check for invalid arguments.
+ */
+ if (ccc == NULL || (*color_string)[0] == '\0' || pColor_exact_return == NULL) {
+ return(XcmsFailure);
+ }
+
+/*
+ * 1. First attempt to parse the string
+ * If successful, then convert the specification to the target format
+ * and return.
+ */
+ if (_XcmsParseColorString(ccc, *color_string, pColor_exact_return)
+ == 1) {
+ if (result_format != XcmsUndefinedFormat
+ && pColor_exact_return->format != result_format) {
+ /* need to be converted to the target format */
+ return(XcmsConvertColors(ccc, pColor_exact_return, 1,
+ result_format, (Bool *)NULL));
+ } else {
+ return(XcmsSuccess);
+ }
+ }
+
+/*
+ * 2. Attempt to find it in the DI Color Name Database
+ */
+
+ /*
+ * a. Convert String into a XcmsColor structure
+ * Attempt to extract the specification for color_string from the
+ * DI Database (pColor_exact_return). If the DI Database does not
+ * have this entry, then return failure.
+ */
+ retval = _XcmsLookupColorName(ccc, color_string, pColor_exact_return);
+
+ if (retval != XcmsSuccess) {
+ /* color_string replaced with a color name, or not found */
+ return(_XCMS_NEWNAME);
+ }
+
+ if (pColor_exact_return->format == XcmsUndefinedFormat) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * b. If result_format not defined, then assume target format
+ * is the exact format.
+ */
+ if (result_format == XcmsUndefinedFormat) {
+ result_format = pColor_exact_return->format;
+ }
+
+ if ((ClientWhitePointOfCCC(ccc))->format == XcmsUndefinedFormat) {
+ pClientWhitePt = ScreenWhitePointOfCCC(ccc);
+ } else {
+ pClientWhitePt = ClientWhitePointOfCCC(ccc);
+ }
+
+ /*
+ * c. Convert to the target format, making adjustments for white
+ * point differences as necessary.
+ */
+ if (XCMS_DD_ID(pColor_exact_return->format)) {
+ /*
+ * The spec format is Device-Dependent, therefore assume the
+ * its white point is the Screen White Point.
+ */
+ if (XCMS_DD_ID(result_format)) {
+ /*
+ * Target format is Device-Dependent
+ * Therefore, DD --> DD conversion
+ */
+ return(_XcmsDDConvertColors(ccc, pColor_exact_return,
+ 1, result_format, (Bool *) NULL));
+ } else {
+ /*
+ * Target format is Device-Independent
+ * Therefore, DD --> DI conversion
+ */
+ if (ccc->whitePtAdjProc && !_XcmsEqualWhitePts(ccc,
+ pClientWhitePt, ScreenWhitePointOfCCC(ccc))) {
+ return((*ccc->whitePtAdjProc)(ccc, ScreenWhitePointOfCCC(ccc),
+ pClientWhitePt, result_format,
+ pColor_exact_return, 1, (Bool *) NULL));
+ } else {
+ if (_XcmsDDConvertColors(ccc, pColor_exact_return, 1,
+ XcmsCIEXYZFormat, (Bool *) NULL) == XcmsFailure) {
+ return(XcmsFailure);
+ }
+ return(_XcmsDIConvertColors(ccc, pColor_exact_return,
+ pClientWhitePt, 1, result_format));
+ }
+ }
+ } else {
+ /*
+ * The spec format is Device-Independent, therefore attempt
+ * to find a database white point.
+ *
+ * If the Database does not have a white point, then assume the
+ * database white point is the same as the Screen White Point.
+ */
+
+ if (_XcmsLookupColorName(ccc, &strptr, &dbWhitePt) != 1) {
+ memcpy((char *)&dbWhitePt,
+ (char *)&ccc->pPerScrnInfo->screenWhitePt,
+ sizeof(XcmsColor));
+ }
+ if (XCMS_DD_ID(result_format)) {
+ /*
+ * Target format is Device-Dependent
+ * Therefore, DI --> DD conversion
+ */
+ if (ccc->whitePtAdjProc && !_XcmsEqualWhitePts(ccc,
+ &dbWhitePt, ScreenWhitePointOfCCC(ccc))) {
+ return((*ccc->whitePtAdjProc)(ccc, &dbWhitePt,
+ ScreenWhitePointOfCCC(ccc), result_format,
+ pColor_exact_return, 1, (Bool *)NULL));
+ } else {
+ if (pColor_exact_return->format != XcmsCIEXYZFormat) {
+ if (_XcmsDIConvertColors(ccc, pColor_exact_return,
+ &dbWhitePt, 1, XcmsCIEXYZFormat) == XcmsFailure) {
+ return(XcmsFailure);
+ }
+ }
+ return (_XcmsDDConvertColors(ccc, pColor_exact_return, 1,
+ result_format, (Bool *)NULL));
+ }
+ } else {
+ /*
+ * Target format is Device-Independent
+ * Therefore, DI --> DI conversion
+ */
+ if (ccc->whitePtAdjProc && !_XcmsEqualWhitePts(ccc,
+ &dbWhitePt, pClientWhitePt)) {
+ /*
+ * The calling routine wants to resolve this color
+ * in terms if it's white point (i.e. Client White Point).
+ * Therefore, apply white adjustment for the displacement
+ * between dbWhitePt to clientWhitePt.
+ */
+ return((*ccc->whitePtAdjProc)(ccc, &dbWhitePt,
+ pClientWhitePt, result_format,
+ pColor_exact_return, 1, (Bool *)NULL));
+ } else if (_XcmsEqualWhitePts(ccc,
+ &dbWhitePt, pClientWhitePt)) {
+ /*
+ * Can use either dbWhitePt or pClientWhitePt to
+ * convert to the result_format.
+ */
+ if (pColor_exact_return->format == result_format) {
+ return(XcmsSuccess);
+ } else {
+ return (_XcmsDIConvertColors(ccc, pColor_exact_return,
+ &dbWhitePt, 1, result_format));
+ }
+ } else {
+ /*
+ * Need to convert to a white point independent color
+ * space (let's choose CIEXYZ) then convert to the
+ * target color space. Why? Lets assume that
+ * pColor_exact_return->format and result format
+ * are white point dependent format (e.g., CIELUV, CIELAB,
+ * TekHVC ... same or any combination). If so, we'll
+ * need to convert the color with dbWhitePt to an absolute
+ * spec (i.e. non-white point dependent) then convert that
+ * absolute value with clientWhitePt to the result_format.
+ */
+ if (pColor_exact_return->format != XcmsCIEXYZFormat) {
+ if (_XcmsDIConvertColors(ccc, pColor_exact_return,
+ &dbWhitePt, 1, XcmsCIEXYZFormat) == XcmsFailure) {
+ return(XcmsFailure);
+ }
+ }
+ if (result_format == XcmsCIEXYZFormat) {
+ return(XcmsSuccess);
+ } else {
+ return(_XcmsDIConvertColors(ccc, pColor_exact_return,
+ pClientWhitePt, 1, result_format));
+ }
+ }
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 01:19:26 +0000