tkOldConfig.c
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上传日期:2015-12-11
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- /*
- * tkOldConfig.c --
- *
- * This file contains the Tk_ConfigureWidget procedure. THIS FILE
- * IS HERE FOR BACKWARD COMPATIBILITY; THE NEW CONFIGURATION
- * PACKAGE SHOULD BE USED FOR NEW PROJECTS.
- *
- * Copyright (c) 1990-1994 The Regents of the University of California.
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tkOldConfig.c,v 1.12.2.3 2005/12/05 22:42:42 hobbs Exp $
- */
- #include "tkPort.h"
- #include "tk.h"
- /*
- * Values for "flags" field of Tk_ConfigSpec structures. Be sure
- * to coordinate these values with those defined in tk.h
- * (TK_CONFIG_COLOR_ONLY, etc.). There must not be overlap!
- *
- * INIT - Non-zero means (char *) things have been
- * converted to Tk_Uid's.
- */
- #define INIT 0x20
- /*
- * Forward declarations for procedures defined later in this file:
- */
- static int DoConfig _ANSI_ARGS_((Tcl_Interp *interp,
- Tk_Window tkwin, Tk_ConfigSpec *specPtr,
- Tk_Uid value, int valueIsUid, char *widgRec));
- static Tk_ConfigSpec * FindConfigSpec _ANSI_ARGS_((Tcl_Interp *interp,
- Tk_ConfigSpec *specs, CONST char *argvName,
- int needFlags, int hateFlags));
- static char * FormatConfigInfo _ANSI_ARGS_((Tcl_Interp *interp,
- Tk_Window tkwin, Tk_ConfigSpec *specPtr,
- char *widgRec));
- static CONST char * FormatConfigValue _ANSI_ARGS_((Tcl_Interp *interp,
- Tk_Window tkwin, Tk_ConfigSpec *specPtr,
- char *widgRec, char *buffer,
- Tcl_FreeProc **freeProcPtr));
- static Tk_ConfigSpec * GetCachedSpecs _ANSI_ARGS_((Tcl_Interp *interp,
- const Tk_ConfigSpec *staticSpecs));
- static void DeleteSpecCacheTable _ANSI_ARGS_((
- ClientData clientData, Tcl_Interp *interp));
- /*
- *--------------------------------------------------------------
- *
- * Tk_ConfigureWidget --
- *
- * Process command-line options and database options to
- * fill in fields of a widget record with resources and
- * other parameters.
- *
- * Results:
- * A standard Tcl return value. In case of an error,
- * the interp's result will hold an error message.
- *
- * Side effects:
- * The fields of widgRec get filled in with information from
- * argc/argv and the option database. Old information in
- * widgRec's fields gets recycled. A copy of the spec-table is
- * taken with (some of) the char* *fields converted into Tk_Uid
- * fields; this copy will be released when *the interpreter
- * terminates.
- *
- *--------------------------------------------------------------
- */
- int
- Tk_ConfigureWidget(interp, tkwin, origSpecs, argc, argv, widgRec, flags)
- Tcl_Interp *interp; /* Interpreter for error reporting. */
- Tk_Window tkwin; /* Window containing widget (needed to
- * set up X resources). */
- Tk_ConfigSpec *origSpecs; /* Describes legal options. */
- int argc; /* Number of elements in argv. */
- CONST char **argv; /* Command-line options. */
- char *widgRec; /* Record whose fields are to be
- * modified. Values must be properly
- * initialized. */
- int flags; /* Used to specify additional flags
- * that must be present in config specs
- * for them to be considered. Also,
- * may have TK_CONFIG_ARGV_ONLY set. */
- {
- register Tk_ConfigSpec *specs, *specPtr, *origSpecPtr;
- Tk_Uid value; /* Value of option from database. */
- int needFlags; /* Specs must contain this set of flags
- * or else they are not considered. */
- int hateFlags; /* If a spec contains any bits here, it's
- * not considered. */
- if (tkwin == NULL) {
- /*
- * Either we're not really in Tk, or the main window was destroyed and
- * we're on our way out of the application
- */
- Tcl_AppendResult(interp, "NULL main window", (char *)NULL);
- return TCL_ERROR;
- }
- needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
- if (Tk_Depth(tkwin) <= 1) {
- hateFlags = TK_CONFIG_COLOR_ONLY;
- } else {
- hateFlags = TK_CONFIG_MONO_ONLY;
- }
- /*
- * Get the build of the config for this interpreter and reset any
- * indication of changed options.
- */
- specs = GetCachedSpecs(interp, origSpecs);
- for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
- specPtr->specFlags &= ~TK_CONFIG_OPTION_SPECIFIED;
- }
- /*
- * Pass one: scan through all of the arguments, processing those
- * that match entries in the specs.
- */
- for ( ; argc > 0; argc -= 2, argv += 2) {
- CONST char *arg;
- if (flags & TK_CONFIG_OBJS) {
- arg = Tcl_GetStringFromObj((Tcl_Obj *) *argv, NULL);
- } else {
- arg = *argv;
- }
- specPtr = FindConfigSpec(interp, specs, arg, needFlags, hateFlags);
- if (specPtr == NULL) {
- return TCL_ERROR;
- }
- /*
- * Process the entry.
- */
- if (argc < 2) {
- Tcl_AppendResult(interp, "value for "", arg,
- "" missing", (char *) NULL);
- return TCL_ERROR;
- }
- if (flags & TK_CONFIG_OBJS) {
- arg = Tcl_GetString((Tcl_Obj *) argv[1]);
- } else {
- arg = argv[1];
- }
- if (DoConfig(interp, tkwin, specPtr, arg, 0, widgRec) != TCL_OK) {
- char msg[100];
- sprintf(msg, "n (processing "%.40s" option)",
- specPtr->argvName);
- Tcl_AddErrorInfo(interp, msg);
- return TCL_ERROR;
- }
- specPtr->specFlags |= TK_CONFIG_OPTION_SPECIFIED;
- }
- /*
- * Thread Unsafe! For compatibility through 8.4.x, we set the original
- * specPtr flags to indicate changed options. This has been removed
- * from 8.5. Switch to Tcl_Obj-based options instead. [Bug 749908]
- */
- for (origSpecPtr = origSpecs, specPtr = specs;
- specPtr->type != TK_CONFIG_END; origSpecPtr++, specPtr++) {
- origSpecPtr->specFlags = specPtr->specFlags;
- }
- /*
- * Pass two: scan through all of the specs again; if no
- * command-line argument matched a spec, then check for info
- * in the option database. If there was nothing in the
- * database, then use the default.
- */
- if (!(flags & TK_CONFIG_ARGV_ONLY)) {
- for (specPtr=specs; specPtr->type!=TK_CONFIG_END; specPtr++) {
- if ((specPtr->specFlags & TK_CONFIG_OPTION_SPECIFIED)
- || (specPtr->argvName == NULL)
- || (specPtr->type == TK_CONFIG_SYNONYM)) {
- continue;
- }
- if (((specPtr->specFlags & needFlags) != needFlags)
- || (specPtr->specFlags & hateFlags)) {
- continue;
- }
- value = NULL;
- if (specPtr->dbName != NULL) {
- value = Tk_GetOption(tkwin, specPtr->dbName, specPtr->dbClass);
- }
- if (value != NULL) {
- if (DoConfig(interp, tkwin, specPtr, value, 1, widgRec) !=
- TCL_OK) {
- char msg[200];
- sprintf(msg, "n (%s "%.50s" in widget "%.50s")",
- "database entry for",
- specPtr->dbName, Tk_PathName(tkwin));
- Tcl_AddErrorInfo(interp, msg);
- return TCL_ERROR;
- }
- } else {
- if (specPtr->defValue != NULL) {
- value = Tk_GetUid(specPtr->defValue);
- } else {
- value = NULL;
- }
- if ((value != NULL) && !(specPtr->specFlags
- & TK_CONFIG_DONT_SET_DEFAULT)) {
- if (DoConfig(interp, tkwin, specPtr, value, 1, widgRec) !=
- TCL_OK) {
- char msg[200];
- sprintf(msg,
- "n (%s "%.50s" in widget "%.50s")",
- "default value for",
- specPtr->dbName, Tk_PathName(tkwin));
- Tcl_AddErrorInfo(interp, msg);
- return TCL_ERROR;
- }
- }
- }
- }
- }
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * FindConfigSpec --
- *
- * Search through a table of configuration specs, looking for
- * one that matches a given argvName.
- *
- * Results:
- * The return value is a pointer to the matching entry, or NULL
- * if nothing matched. In that case an error message is left
- * in the interp's result.
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
- static Tk_ConfigSpec *
- FindConfigSpec(interp, specs, argvName, needFlags, hateFlags)
- Tcl_Interp *interp; /* Used for reporting errors. */
- Tk_ConfigSpec *specs; /* Pointer to table of configuration
- * specifications for a widget. */
- CONST char *argvName; /* Name (suitable for use in a "config"
- * command) identifying particular option. */
- int needFlags; /* Flags that must be present in matching
- * entry. */
- int hateFlags; /* Flags that must NOT be present in
- * matching entry. */
- {
- register Tk_ConfigSpec *specPtr;
- register char c; /* First character of current argument. */
- Tk_ConfigSpec *matchPtr; /* Matching spec, or NULL. */
- size_t length;
- c = argvName[1];
- length = strlen(argvName);
- matchPtr = NULL;
- for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
- if (specPtr->argvName == NULL) {
- continue;
- }
- if ((specPtr->argvName[1] != c)
- || (strncmp(specPtr->argvName, argvName, length) != 0)) {
- continue;
- }
- if (((specPtr->specFlags & needFlags) != needFlags)
- || (specPtr->specFlags & hateFlags)) {
- continue;
- }
- if (specPtr->argvName[length] == 0) {
- matchPtr = specPtr;
- goto gotMatch;
- }
- if (matchPtr != NULL) {
- Tcl_AppendResult(interp, "ambiguous option "", argvName,
- """, (char *) NULL);
- return (Tk_ConfigSpec *) NULL;
- }
- matchPtr = specPtr;
- }
- if (matchPtr == NULL) {
- Tcl_AppendResult(interp, "unknown option "", argvName,
- """, (char *) NULL);
- return (Tk_ConfigSpec *) NULL;
- }
- /*
- * Found a matching entry. If it's a synonym, then find the
- * entry that it's a synonym for.
- */
- gotMatch:
- specPtr = matchPtr;
- if (specPtr->type == TK_CONFIG_SYNONYM) {
- for (specPtr = specs; ; specPtr++) {
- if (specPtr->type == TK_CONFIG_END) {
- Tcl_AppendResult(interp,
- "couldn't find synonym for option "",
- argvName, """, (char *) NULL);
- return (Tk_ConfigSpec *) NULL;
- }
- if ((specPtr->dbName == matchPtr->dbName)
- && (specPtr->type != TK_CONFIG_SYNONYM)
- && ((specPtr->specFlags & needFlags) == needFlags)
- && !(specPtr->specFlags & hateFlags)) {
- break;
- }
- }
- }
- return specPtr;
- }
- /*
- *--------------------------------------------------------------
- *
- * DoConfig --
- *
- * This procedure applies a single configuration option
- * to a widget record.
- *
- * Results:
- * A standard Tcl return value.
- *
- * Side effects:
- * WidgRec is modified as indicated by specPtr and value.
- * The old value is recycled, if that is appropriate for
- * the value type.
- *
- *--------------------------------------------------------------
- */
- static int
- DoConfig(interp, tkwin, specPtr, value, valueIsUid, widgRec)
- Tcl_Interp *interp; /* Interpreter for error reporting. */
- Tk_Window tkwin; /* Window containing widget (needed to
- * set up X resources). */
- Tk_ConfigSpec *specPtr; /* Specifier to apply. */
- Tk_Uid value; /* Value to use to fill in widgRec. */
- int valueIsUid; /* Non-zero means value is a Tk_Uid;
- * zero means it's an ordinary string. */
- char *widgRec; /* Record whose fields are to be
- * modified. Values must be properly
- * initialized. */
- {
- char *ptr;
- Tk_Uid uid;
- int nullValue;
- nullValue = 0;
- if ((*value == 0) && (specPtr->specFlags & TK_CONFIG_NULL_OK)) {
- nullValue = 1;
- }
- do {
- ptr = widgRec + specPtr->offset;
- switch (specPtr->type) {
- case TK_CONFIG_BOOLEAN:
- if (Tcl_GetBoolean(interp, value, (int *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_INT:
- if (Tcl_GetInt(interp, value, (int *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_DOUBLE:
- if (Tcl_GetDouble(interp, value, (double *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_STRING: {
- char *old, *new;
- if (nullValue) {
- new = NULL;
- } else {
- new = (char *) ckalloc((unsigned) (strlen(value) + 1));
- strcpy(new, value);
- }
- old = *((char **) ptr);
- if (old != NULL) {
- ckfree(old);
- }
- *((char **) ptr) = new;
- break;
- }
- case TK_CONFIG_UID:
- if (nullValue) {
- *((Tk_Uid *) ptr) = NULL;
- } else {
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- *((Tk_Uid *) ptr) = uid;
- }
- break;
- case TK_CONFIG_COLOR: {
- XColor *newPtr, *oldPtr;
- if (nullValue) {
- newPtr = NULL;
- } else {
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- newPtr = Tk_GetColor(interp, tkwin, uid);
- if (newPtr == NULL) {
- return TCL_ERROR;
- }
- }
- oldPtr = *((XColor **) ptr);
- if (oldPtr != NULL) {
- Tk_FreeColor(oldPtr);
- }
- *((XColor **) ptr) = newPtr;
- break;
- }
- case TK_CONFIG_FONT: {
- Tk_Font new;
- if (nullValue) {
- new = NULL;
- } else {
- new = Tk_GetFont(interp, tkwin, value);
- if (new == NULL) {
- return TCL_ERROR;
- }
- }
- Tk_FreeFont(*((Tk_Font *) ptr));
- *((Tk_Font *) ptr) = new;
- break;
- }
- case TK_CONFIG_BITMAP: {
- Pixmap new, old;
- if (nullValue) {
- new = None;
- } else {
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- new = Tk_GetBitmap(interp, tkwin, uid);
- if (new == None) {
- return TCL_ERROR;
- }
- }
- old = *((Pixmap *) ptr);
- if (old != None) {
- Tk_FreeBitmap(Tk_Display(tkwin), old);
- }
- *((Pixmap *) ptr) = new;
- break;
- }
- case TK_CONFIG_BORDER: {
- Tk_3DBorder new, old;
- if (nullValue) {
- new = NULL;
- } else {
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- new = Tk_Get3DBorder(interp, tkwin, uid);
- if (new == NULL) {
- return TCL_ERROR;
- }
- }
- old = *((Tk_3DBorder *) ptr);
- if (old != NULL) {
- Tk_Free3DBorder(old);
- }
- *((Tk_3DBorder *) ptr) = new;
- break;
- }
- case TK_CONFIG_RELIEF:
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- if (Tk_GetRelief(interp, uid, (int *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_CURSOR:
- case TK_CONFIG_ACTIVE_CURSOR: {
- Tk_Cursor new, old;
- if (nullValue) {
- new = None;
- } else {
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- new = Tk_GetCursor(interp, tkwin, uid);
- if (new == None) {
- return TCL_ERROR;
- }
- }
- old = *((Tk_Cursor *) ptr);
- if (old != None) {
- Tk_FreeCursor(Tk_Display(tkwin), old);
- }
- *((Tk_Cursor *) ptr) = new;
- if (specPtr->type == TK_CONFIG_ACTIVE_CURSOR) {
- Tk_DefineCursor(tkwin, new);
- }
- break;
- }
- case TK_CONFIG_JUSTIFY:
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- if (Tk_GetJustify(interp, uid, (Tk_Justify *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_ANCHOR:
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- if (Tk_GetAnchor(interp, uid, (Tk_Anchor *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_CAP_STYLE:
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- if (Tk_GetCapStyle(interp, uid, (int *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_JOIN_STYLE:
- uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
- if (Tk_GetJoinStyle(interp, uid, (int *) ptr) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_PIXELS:
- if (Tk_GetPixels(interp, tkwin, value, (int *) ptr)
- != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_MM:
- if (Tk_GetScreenMM(interp, tkwin, value, (double *) ptr)
- != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- case TK_CONFIG_WINDOW: {
- Tk_Window tkwin2;
- if (nullValue) {
- tkwin2 = NULL;
- } else {
- tkwin2 = Tk_NameToWindow(interp, value, tkwin);
- if (tkwin2 == NULL) {
- return TCL_ERROR;
- }
- }
- *((Tk_Window *) ptr) = tkwin2;
- break;
- }
- case TK_CONFIG_CUSTOM:
- if ((*specPtr->customPtr->parseProc)(
- specPtr->customPtr->clientData, interp, tkwin,
- value, widgRec, specPtr->offset) != TCL_OK) {
- return TCL_ERROR;
- }
- break;
- default: {
- char buf[64 + TCL_INTEGER_SPACE];
- sprintf(buf, "bad config table: unknown type %d",
- specPtr->type);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- return TCL_ERROR;
- }
- }
- specPtr++;
- } while ((specPtr->argvName == NULL) && (specPtr->type != TK_CONFIG_END));
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * Tk_ConfigureInfo --
- *
- * Return information about the configuration options
- * for a window, and their current values.
- *
- * Results:
- * Always returns TCL_OK. The interp's result will be modified
- * hold a description of either a single configuration option
- * available for "widgRec" via "specs", or all the configuration
- * options available. In the "all" case, the result will
- * available for "widgRec" via "specs". The result will
- * be a list, each of whose entries describes one option.
- * Each entry will itself be a list containing the option's
- * name for use on command lines, database name, database
- * class, default value, and current value (empty string
- * if none). For options that are synonyms, the list will
- * contain only two values: name and synonym name. If the
- * "name" argument is non-NULL, then the only information
- * returned is that for the named argument (i.e. the corresponding
- * entry in the overall list is returned).
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
- int
- Tk_ConfigureInfo(interp, tkwin, specs, widgRec, argvName, flags)
- Tcl_Interp *interp; /* Interpreter for error reporting. */
- Tk_Window tkwin; /* Window corresponding to widgRec. */
- Tk_ConfigSpec *specs; /* Describes legal options. */
- char *widgRec; /* Record whose fields contain current
- * values for options. */
- CONST char *argvName; /* If non-NULL, indicates a single option
- * whose info is to be returned. Otherwise
- * info is returned for all options. */
- int flags; /* Used to specify additional flags
- * that must be present in config specs
- * for them to be considered. */
- {
- register Tk_ConfigSpec *specPtr;
- int needFlags, hateFlags;
- char *list;
- char *leader = "{";
- needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
- if (Tk_Depth(tkwin) <= 1) {
- hateFlags = TK_CONFIG_COLOR_ONLY;
- } else {
- hateFlags = TK_CONFIG_MONO_ONLY;
- }
- /*
- * Get the build of the config for this interpreter.
- */
- specs = GetCachedSpecs(interp, specs);
- /*
- * If information is only wanted for a single configuration
- * spec, then handle that one spec specially.
- */
- Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
- if (argvName != NULL) {
- specPtr = FindConfigSpec(interp, specs, argvName, needFlags,hateFlags);
- if (specPtr == NULL) {
- return TCL_ERROR;
- }
- Tcl_SetResult(interp,
- FormatConfigInfo(interp, tkwin, specPtr, widgRec),
- TCL_DYNAMIC);
- return TCL_OK;
- }
- /*
- * Loop through all the specs, creating a big list with all
- * their information.
- */
- for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
- if ((argvName != NULL) && (specPtr->argvName != argvName)) {
- continue;
- }
- if (((specPtr->specFlags & needFlags) != needFlags)
- || (specPtr->specFlags & hateFlags)) {
- continue;
- }
- if (specPtr->argvName == NULL) {
- continue;
- }
- list = FormatConfigInfo(interp, tkwin, specPtr, widgRec);
- Tcl_AppendResult(interp, leader, list, "}", (char *) NULL);
- ckfree(list);
- leader = " {";
- }
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * FormatConfigInfo --
- *
- * Create a valid Tcl list holding the configuration information
- * for a single configuration option.
- *
- * Results:
- * A Tcl list, dynamically allocated. The caller is expected to
- * arrange for this list to be freed eventually.
- *
- * Side effects:
- * Memory is allocated.
- *
- *--------------------------------------------------------------
- */
- static char *
- FormatConfigInfo(interp, tkwin, specPtr, widgRec)
- Tcl_Interp *interp; /* Interpreter to use for things
- * like floating-point precision. */
- Tk_Window tkwin; /* Window corresponding to widget. */
- register Tk_ConfigSpec *specPtr; /* Pointer to information describing
- * option. */
- char *widgRec; /* Pointer to record holding current
- * values of info for widget. */
- {
- CONST char *argv[6];
- char *result;
- char buffer[200];
- Tcl_FreeProc *freeProc = (Tcl_FreeProc *) NULL;
- argv[0] = specPtr->argvName;
- argv[1] = specPtr->dbName;
- argv[2] = specPtr->dbClass;
- argv[3] = specPtr->defValue;
- if (specPtr->type == TK_CONFIG_SYNONYM) {
- return Tcl_Merge(2, argv);
- }
- argv[4] = FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer,
- &freeProc);
- if (argv[1] == NULL) {
- argv[1] = "";
- }
- if (argv[2] == NULL) {
- argv[2] = "";
- }
- if (argv[3] == NULL) {
- argv[3] = "";
- }
- if (argv[4] == NULL) {
- argv[4] = "";
- }
- result = Tcl_Merge(5, argv);
- if (freeProc != NULL) {
- if ((freeProc == TCL_DYNAMIC) || (freeProc == (Tcl_FreeProc *) free)) {
- ckfree((char *)argv[4]);
- } else {
- (*freeProc)((char *)argv[4]);
- }
- }
- return result;
- }
- /*
- *----------------------------------------------------------------------
- *
- * FormatConfigValue --
- *
- * This procedure formats the current value of a configuration
- * option.
- *
- * Results:
- * The return value is the formatted value of the option given
- * by specPtr and widgRec. If the value is static, so that it
- * need not be freed, *freeProcPtr will be set to NULL; otherwise
- * *freeProcPtr will be set to the address of a procedure to
- * free the result, and the caller must invoke this procedure
- * when it is finished with the result.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- static CONST char *
- FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer, freeProcPtr)
- Tcl_Interp *interp; /* Interpreter for use in real conversions. */
- Tk_Window tkwin; /* Window corresponding to widget. */
- Tk_ConfigSpec *specPtr; /* Pointer to information describing option.
- * Must not point to a synonym option. */
- char *widgRec; /* Pointer to record holding current
- * values of info for widget. */
- char *buffer; /* Static buffer to use for small values.
- * Must have at least 200 bytes of storage. */
- Tcl_FreeProc **freeProcPtr; /* Pointer to word to fill in with address
- * of procedure to free the result, or NULL
- * if result is static. */
- {
- CONST char *ptr, *result;
- *freeProcPtr = NULL;
- ptr = widgRec + specPtr->offset;
- result = "";
- switch (specPtr->type) {
- case TK_CONFIG_BOOLEAN:
- if (*((int *) ptr) == 0) {
- result = "0";
- } else {
- result = "1";
- }
- break;
- case TK_CONFIG_INT:
- sprintf(buffer, "%d", *((int *) ptr));
- result = buffer;
- break;
- case TK_CONFIG_DOUBLE:
- Tcl_PrintDouble(interp, *((double *) ptr), buffer);
- result = buffer;
- break;
- case TK_CONFIG_STRING:
- result = (*(char **) ptr);
- if (result == NULL) {
- result = "";
- }
- break;
- case TK_CONFIG_UID: {
- Tk_Uid uid = *((Tk_Uid *) ptr);
- if (uid != NULL) {
- result = uid;
- }
- break;
- }
- case TK_CONFIG_COLOR: {
- XColor *colorPtr = *((XColor **) ptr);
- if (colorPtr != NULL) {
- result = Tk_NameOfColor(colorPtr);
- }
- break;
- }
- case TK_CONFIG_FONT: {
- Tk_Font tkfont = *((Tk_Font *) ptr);
- if (tkfont != NULL) {
- result = Tk_NameOfFont(tkfont);
- }
- break;
- }
- case TK_CONFIG_BITMAP: {
- Pixmap pixmap = *((Pixmap *) ptr);
- if (pixmap != None) {
- result = Tk_NameOfBitmap(Tk_Display(tkwin), pixmap);
- }
- break;
- }
- case TK_CONFIG_BORDER: {
- Tk_3DBorder border = *((Tk_3DBorder *) ptr);
- if (border != NULL) {
- result = Tk_NameOf3DBorder(border);
- }
- break;
- }
- case TK_CONFIG_RELIEF:
- result = Tk_NameOfRelief(*((int *) ptr));
- break;
- case TK_CONFIG_CURSOR:
- case TK_CONFIG_ACTIVE_CURSOR: {
- Tk_Cursor cursor = *((Tk_Cursor *) ptr);
- if (cursor != None) {
- result = Tk_NameOfCursor(Tk_Display(tkwin), cursor);
- }
- break;
- }
- case TK_CONFIG_JUSTIFY:
- result = Tk_NameOfJustify(*((Tk_Justify *) ptr));
- break;
- case TK_CONFIG_ANCHOR:
- result = Tk_NameOfAnchor(*((Tk_Anchor *) ptr));
- break;
- case TK_CONFIG_CAP_STYLE:
- result = Tk_NameOfCapStyle(*((int *) ptr));
- break;
- case TK_CONFIG_JOIN_STYLE:
- result = Tk_NameOfJoinStyle(*((int *) ptr));
- break;
- case TK_CONFIG_PIXELS:
- sprintf(buffer, "%d", *((int *) ptr));
- result = buffer;
- break;
- case TK_CONFIG_MM:
- Tcl_PrintDouble(interp, *((double *) ptr), buffer);
- result = buffer;
- break;
- case TK_CONFIG_WINDOW: {
- Tk_Window tkwin;
- tkwin = *((Tk_Window *) ptr);
- if (tkwin != NULL) {
- result = Tk_PathName(tkwin);
- }
- break;
- }
- case TK_CONFIG_CUSTOM:
- result = (*specPtr->customPtr->printProc)(
- specPtr->customPtr->clientData, tkwin, widgRec,
- specPtr->offset, freeProcPtr);
- break;
- default:
- result = "?? unknown type ??";
- }
- return result;
- }
- /*
- *----------------------------------------------------------------------
- *
- * Tk_ConfigureValue --
- *
- * This procedure returns the current value of a configuration
- * option for a widget.
- *
- * Results:
- * The return value is a standard Tcl completion code (TCL_OK or
- * TCL_ERROR). The interp's result will be set to hold either the value
- * of the option given by argvName (if TCL_OK is returned) or
- * an error message (if TCL_ERROR is returned).
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- int
- Tk_ConfigureValue(interp, tkwin, specs, widgRec, argvName, flags)
- Tcl_Interp *interp; /* Interpreter for error reporting. */
- Tk_Window tkwin; /* Window corresponding to widgRec. */
- Tk_ConfigSpec *specs; /* Describes legal options. */
- char *widgRec; /* Record whose fields contain current
- * values for options. */
- CONST char *argvName; /* Gives the command-line name for the
- * option whose value is to be returned. */
- int flags; /* Used to specify additional flags
- * that must be present in config specs
- * for them to be considered. */
- {
- Tk_ConfigSpec *specPtr;
- int needFlags, hateFlags;
- Tcl_FreeProc *freeProc;
- CONST char *result;
- char buffer[200];
- needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
- if (Tk_Depth(tkwin) <= 1) {
- hateFlags = TK_CONFIG_COLOR_ONLY;
- } else {
- hateFlags = TK_CONFIG_MONO_ONLY;
- }
- /*
- * Get the build of the config for this interpreter.
- */
- specs = GetCachedSpecs(interp, specs);
- specPtr = FindConfigSpec(interp, specs, argvName, needFlags, hateFlags);
- if (specPtr == NULL) {
- return TCL_ERROR;
- }
- result = FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer, &freeProc);
- Tcl_SetResult(interp, (char *) result, TCL_VOLATILE);
- if (freeProc != NULL) {
- if ((freeProc == TCL_DYNAMIC) || (freeProc == (Tcl_FreeProc *) free)) {
- ckfree((char *)result);
- } else {
- (*freeProc)((char *)result);
- }
- }
- return TCL_OK;
- }
- /*
- *----------------------------------------------------------------------
- *
- * Tk_FreeOptions --
- *
- * Free up all resources associated with configuration options.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Any resource in widgRec that is controlled by a configuration
- * option (e.g. a Tk_3DBorder or XColor) is freed in the appropriate
- * fashion.
- *
- *----------------------------------------------------------------------
- */
- /* ARGSUSED */
- void
- Tk_FreeOptions(specs, widgRec, display, needFlags)
- Tk_ConfigSpec *specs; /* Describes legal options. */
- char *widgRec; /* Record whose fields contain current
- * values for options. */
- Display *display; /* X display; needed for freeing some
- * resources. */
- int needFlags; /* Used to specify additional flags
- * that must be present in config specs
- * for them to be considered. */
- {
- register Tk_ConfigSpec *specPtr;
- char *ptr;
- for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
- if ((specPtr->specFlags & needFlags) != needFlags) {
- continue;
- }
- ptr = widgRec + specPtr->offset;
- switch (specPtr->type) {
- case TK_CONFIG_STRING:
- if (*((char **) ptr) != NULL) {
- ckfree(*((char **) ptr));
- *((char **) ptr) = NULL;
- }
- break;
- case TK_CONFIG_COLOR:
- if (*((XColor **) ptr) != NULL) {
- Tk_FreeColor(*((XColor **) ptr));
- *((XColor **) ptr) = NULL;
- }
- break;
- case TK_CONFIG_FONT:
- Tk_FreeFont(*((Tk_Font *) ptr));
- *((Tk_Font *) ptr) = NULL;
- break;
- case TK_CONFIG_BITMAP:
- if (*((Pixmap *) ptr) != None) {
- Tk_FreeBitmap(display, *((Pixmap *) ptr));
- *((Pixmap *) ptr) = None;
- }
- break;
- case TK_CONFIG_BORDER:
- if (*((Tk_3DBorder *) ptr) != NULL) {
- Tk_Free3DBorder(*((Tk_3DBorder *) ptr));
- *((Tk_3DBorder *) ptr) = NULL;
- }
- break;
- case TK_CONFIG_CURSOR:
- case TK_CONFIG_ACTIVE_CURSOR:
- if (*((Tk_Cursor *) ptr) != None) {
- Tk_FreeCursor(display, *((Tk_Cursor *) ptr));
- *((Tk_Cursor *) ptr) = None;
- }
- }
- }
- }
- /*
- *--------------------------------------------------------------
- *
- * GetCachedSpecs --
- *
- *Returns a writable per-interpreter (and hence thread-local) copy of
- *the given spec-table with (some of) the char* fields converted into
- *Tk_Uid fields; this copy will be released when the interpreter
- *terminates (during AssocData cleanup).
- *
- * Results:
- *A pointer to the copied table.
- *
- * Notes:
- *The conversion to Tk_Uid is only done the first time, when the table
- *copy is taken. After that, the table is assumed to have Tk_Uids where
- *they are needed. The time of deletion of the caches isn't very
- *important unless you've got a lot of code that uses Tk_ConfigureWidget
- *(or *Info or *Value} when the interpreter is being deleted.
- *
- *--------------------------------------------------------------
- */
- static Tk_ConfigSpec *
- GetCachedSpecs(interp, staticSpecs)
- Tcl_Interp *interp; /* Interpreter in which to store the cache. */
- const Tk_ConfigSpec *staticSpecs;
- /* Value to cache a copy of; it is also used
- * as a key into the cache. */
- {
- Tk_ConfigSpec *cachedSpecs;
- Tcl_HashTable *specCacheTablePtr;
- Tcl_HashEntry *entryPtr;
- int isNew;
- /*
- * Get (or allocate if it doesn't exist) the hash table that the writable
- * copies of the widget specs are stored in. In effect, this is
- * self-initializing code.
- */
- specCacheTablePtr = (Tcl_HashTable *)
- Tcl_GetAssocData(interp, "tkConfigSpec.threadTable", NULL);
- if (specCacheTablePtr == NULL) {
- specCacheTablePtr = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
- Tcl_InitHashTable(specCacheTablePtr, TCL_ONE_WORD_KEYS);
- Tcl_SetAssocData(interp, "tkConfigSpec.threadTable",
- DeleteSpecCacheTable, (ClientData) specCacheTablePtr);
- }
- /*
- * Look up or create the hash entry that the constant specs are mapped to,
- * which will have the writable specs as its associated value.
- */
- entryPtr = Tcl_CreateHashEntry(specCacheTablePtr, (char *) staticSpecs,
- &isNew);
- if (isNew) {
- unsigned int entrySpace = sizeof(Tk_ConfigSpec);
- const Tk_ConfigSpec *staticSpecPtr;
- Tk_ConfigSpec *specPtr;
- /*
- * OK, no working copy in this interpreter so copy. Need to work out
- * how much space to allocate first.
- */
- for (staticSpecPtr=staticSpecs; staticSpecPtr->type!=TK_CONFIG_END;
- staticSpecPtr++) {
- entrySpace += sizeof(Tk_ConfigSpec);
- }
- /*
- * Now allocate our working copy's space and copy over the contents
- * from the master copy.
- */
- cachedSpecs = (Tk_ConfigSpec *) ckalloc(entrySpace);
- memcpy((void *) cachedSpecs, (void *) staticSpecs, entrySpace);
- Tcl_SetHashValue(entryPtr, (ClientData) cachedSpecs);
- /*
- * Finally, go through and replace database names, database classes
- * and default values with Tk_Uids. This is the bit that has to be
- * per-thread.
- */
- for (specPtr=cachedSpecs; specPtr->type!=TK_CONFIG_END; specPtr++) {
- if (specPtr->argvName != NULL) {
- if (specPtr->dbName != NULL) {
- specPtr->dbName = Tk_GetUid(specPtr->dbName);
- }
- if (specPtr->dbClass != NULL) {
- specPtr->dbClass = Tk_GetUid(specPtr->dbClass);
- }
- if (specPtr->defValue != NULL) {
- specPtr->defValue = Tk_GetUid(specPtr->defValue);
- }
- }
- }
- } else {
- cachedSpecs = (Tk_ConfigSpec *) Tcl_GetHashValue(entryPtr);
- }
- return cachedSpecs;
- }
- /*
- *--------------------------------------------------------------
- *
- * DeleteSpecCacheTable --
- *
- * Delete the per-interpreter copy of all the Tk_ConfigSpec tables which
- * were stored in the interpreter's assoc-data store.
- *
- * Results:
- * None
- *
- * Side effects:
- * None
- *
- *--------------------------------------------------------------
- */
- static void
- DeleteSpecCacheTable(clientData, interp)
- ClientData clientData;
- Tcl_Interp *interp;
- {
- Tcl_HashTable *tablePtr = (Tcl_HashTable *) clientData;
- Tcl_HashEntry *entryPtr;
- Tcl_HashSearch search;
- for (entryPtr = Tcl_FirstHashEntry(tablePtr,&search); entryPtr != NULL;
- entryPtr = Tcl_NextHashEntry(&search)) {
- /*
- * Someone else deallocates the Tk_Uids themselves.
- */
- ckfree((char *) Tcl_GetHashValue(entryPtr));
- }
- Tcl_DeleteHashTable(tablePtr);
- ckfree((char *) tablePtr);
- }