2115 lines
60 KiB
C
2115 lines
60 KiB
C
/*
|
||
* tkConfig.c --
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*
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* This file contains functions that manage configuration options for
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* widgets and other things.
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*
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* Copyright (c) 1997-1998 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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/*
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* Temporary flag for working on new config package.
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*/
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#if 0
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/*
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* used only for removing the old config code
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*/
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#define __NO_OLD_CONFIG
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#endif
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#include "tkInt.h"
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#include "tkFont.h"
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/*
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* The following definition keeps track of all of
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* the option tables that have been created for a thread.
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*/
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typedef struct {
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int initialized; /* 0 means table below needs initializing. */
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Tcl_HashTable hashTable;
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} ThreadSpecificData;
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static Tcl_ThreadDataKey dataKey;
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/*
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* The following two structures are used along with Tk_OptionSpec structures
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* to manage configuration options. Tk_OptionSpec is static templates that are
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* compiled into the code of a widget or other object manager. However, to
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* look up options efficiently we need to supplement the static information
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* with additional dynamic information, and this dynamic information may be
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* different for each application. Thus we create structures of the following
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* two types to hold all of the dynamic information; this is done by
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* Tk_CreateOptionTable.
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*
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* One of the following structures corresponds to each Tk_OptionSpec. These
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* structures exist as arrays inside TkOptionTable structures.
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*/
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typedef struct TkOption {
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const Tk_OptionSpec *specPtr;
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/* The original spec from the template passed
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* to Tk_CreateOptionTable.*/
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Tk_Uid dbNameUID; /* The Uid form of the option database
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* name. */
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Tk_Uid dbClassUID; /* The Uid form of the option database class
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* name. */
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Tcl_Obj *defaultPtr; /* Default value for this option. */
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union {
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Tcl_Obj *monoColorPtr; /* For color and border options, this is an
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* alternate default value to use on
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* monochrome displays. */
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struct TkOption *synonymPtr;
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/* For synonym options, this points to the
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* master entry. */
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const struct Tk_ObjCustomOption *custom;
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/* For TK_OPTION_CUSTOM. */
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} extra;
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int flags; /* Miscellaneous flag values; see below for
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* definitions. */
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} Option;
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/*
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* Flag bits defined for Option structures:
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*
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* OPTION_NEEDS_FREEING - 1 means that FreeResources must be invoked to
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* free resources associated with the option when
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* it is no longer needed.
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*/
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#define OPTION_NEEDS_FREEING 1
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/*
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* One of the following exists for each Tk_OptionSpec array that has been
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* passed to Tk_CreateOptionTable.
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*/
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typedef struct OptionTable {
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int refCount; /* Counts the number of uses of this table
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* (the number of times Tk_CreateOptionTable
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* has returned it). This can be greater than
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* 1 if it is shared along several option
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* table chains, or if the same table is used
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* for multiple purposes. */
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Tcl_HashEntry *hashEntryPtr;/* Hash table entry that refers to this table;
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* used to delete the entry. */
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struct OptionTable *nextPtr;/* If templatePtr was part of a chain of
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* templates, this points to the table
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* corresponding to the next template in the
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* chain. */
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int numOptions; /* The number of items in the options array
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* below. */
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Option options[1]; /* Information about the individual options in
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* the table. This must be the last field in
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* the structure: the actual size of the array
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* will be numOptions, not 1. */
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} OptionTable;
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/*
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* Forward declarations for functions defined later in this file:
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*/
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static int DoObjConfig(Tcl_Interp *interp, char *recordPtr,
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Option *optionPtr, Tcl_Obj *valuePtr,
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Tk_Window tkwin, Tk_SavedOption *savePtr);
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static void FreeResources(Option *optionPtr, Tcl_Obj *objPtr,
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char *internalPtr, Tk_Window tkwin);
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static Tcl_Obj * GetConfigList(char *recordPtr,
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Option *optionPtr, Tk_Window tkwin);
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static Tcl_Obj * GetObjectForOption(char *recordPtr,
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Option *optionPtr, Tk_Window tkwin);
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static Option * GetOption(const char *name, OptionTable *tablePtr);
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static Option * GetOptionFromObj(Tcl_Interp *interp,
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Tcl_Obj *objPtr, OptionTable *tablePtr);
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static int ObjectIsEmpty(Tcl_Obj *objPtr);
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static void FreeOptionInternalRep(Tcl_Obj *objPtr);
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static void DupOptionInternalRep(Tcl_Obj *, Tcl_Obj *);
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/*
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* The structure below defines an object type that is used to cache the result
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* of looking up an option name. If an object has this type, then its
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* internalPtr1 field points to the OptionTable in which it was looked up, and
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* the internalPtr2 field points to the entry that matched.
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*/
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static const Tcl_ObjType optionObjType = {
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"option", /* name */
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FreeOptionInternalRep, /* freeIntRepProc */
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DupOptionInternalRep, /* dupIntRepProc */
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NULL, /* updateStringProc */
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NULL /* setFromAnyProc */
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};
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/*
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*--------------------------------------------------------------
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*
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* Tk_CreateOptionTable --
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*
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* Given a template for configuration options, this function creates a
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* table that may be used to look up options efficiently.
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*
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* Results:
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* Returns a token to a structure that can be passed to functions such as
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* Tk_InitOptions, Tk_SetOptions, and Tk_FreeConfigOptions.
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*
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* Side effects:
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* Storage is allocated.
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*
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*--------------------------------------------------------------
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*/
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Tk_OptionTable
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Tk_CreateOptionTable(
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Tcl_Interp *interp, /* Interpreter associated with the application
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* in which this table will be used. */
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const Tk_OptionSpec *templatePtr)
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/* Static information about the configuration
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* options. */
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{
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Tcl_HashEntry *hashEntryPtr;
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int newEntry;
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OptionTable *tablePtr;
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const Tk_OptionSpec *specPtr, *specPtr2;
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Option *optionPtr;
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int numOptions, i;
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ThreadSpecificData *tsdPtr =
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Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
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/*
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* We use an TSD in the thread to keep a hash table of
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* all the option tables we've created for this application. This is
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* used for allowing us to share the tables (e.g. in several chains).
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* The code below finds the hash table or creates a new one if it
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* doesn't already exist.
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*/
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if (!tsdPtr->initialized) {
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Tcl_InitHashTable(&tsdPtr->hashTable, TCL_ONE_WORD_KEYS);
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tsdPtr->initialized = 1;
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}
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/*
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* See if a table has already been created for this template. If so, just
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* reuse the existing table.
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*/
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hashEntryPtr = Tcl_CreateHashEntry(&tsdPtr->hashTable, (char *) templatePtr,
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&newEntry);
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if (!newEntry) {
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tablePtr = Tcl_GetHashValue(hashEntryPtr);
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tablePtr->refCount++;
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return (Tk_OptionTable) tablePtr;
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}
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/*
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* Count the number of options in the template, then create the table
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* structure.
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*/
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numOptions = 0;
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for (specPtr = templatePtr; specPtr->type != TK_OPTION_END; specPtr++) {
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numOptions++;
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}
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tablePtr = ckalloc(sizeof(OptionTable) + (numOptions * sizeof(Option)));
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tablePtr->refCount = 1;
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tablePtr->hashEntryPtr = hashEntryPtr;
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tablePtr->nextPtr = NULL;
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tablePtr->numOptions = numOptions;
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/*
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* Initialize all of the Option structures in the table.
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*/
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for (specPtr = templatePtr, optionPtr = tablePtr->options;
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specPtr->type != TK_OPTION_END; specPtr++, optionPtr++) {
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optionPtr->specPtr = specPtr;
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optionPtr->dbNameUID = NULL;
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optionPtr->dbClassUID = NULL;
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optionPtr->defaultPtr = NULL;
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optionPtr->extra.monoColorPtr = NULL;
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optionPtr->flags = 0;
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if (specPtr->type == TK_OPTION_SYNONYM) {
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/*
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* This is a synonym option; find the master option that it refers
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* to and create a pointer from the synonym to the master.
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*/
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for (specPtr2 = templatePtr, i = 0; ; specPtr2++, i++) {
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if (specPtr2->type == TK_OPTION_END) {
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Tcl_Panic("Tk_CreateOptionTable couldn't find synonym");
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}
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if (strcmp(specPtr2->optionName,
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(char *) specPtr->clientData) == 0) {
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optionPtr->extra.synonymPtr = tablePtr->options + i;
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break;
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}
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}
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} else {
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if (specPtr->dbName != NULL) {
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optionPtr->dbNameUID = Tk_GetUid(specPtr->dbName);
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}
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if (specPtr->dbClass != NULL) {
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optionPtr->dbClassUID = Tk_GetUid(specPtr->dbClass);
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}
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if (specPtr->defValue != NULL) {
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optionPtr->defaultPtr = Tcl_NewStringObj(specPtr->defValue,-1);
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Tcl_IncrRefCount(optionPtr->defaultPtr);
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}
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if (((specPtr->type == TK_OPTION_COLOR)
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|| (specPtr->type == TK_OPTION_BORDER))
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&& (specPtr->clientData != NULL)) {
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optionPtr->extra.monoColorPtr =
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Tcl_NewStringObj(specPtr->clientData, -1);
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Tcl_IncrRefCount(optionPtr->extra.monoColorPtr);
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}
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if (specPtr->type == TK_OPTION_CUSTOM) {
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/*
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* Get the custom parsing, etc., functions.
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*/
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optionPtr->extra.custom = specPtr->clientData;
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}
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}
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if (((specPtr->type == TK_OPTION_STRING)
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&& (specPtr->internalOffset >= 0))
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|| (specPtr->type == TK_OPTION_COLOR)
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|| (specPtr->type == TK_OPTION_FONT)
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|| (specPtr->type == TK_OPTION_BITMAP)
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|| (specPtr->type == TK_OPTION_BORDER)
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|| (specPtr->type == TK_OPTION_CURSOR)
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|| (specPtr->type == TK_OPTION_CUSTOM)) {
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optionPtr->flags |= OPTION_NEEDS_FREEING;
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}
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}
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tablePtr->hashEntryPtr = hashEntryPtr;
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Tcl_SetHashValue(hashEntryPtr, tablePtr);
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/*
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* Finally, check to see if this template chains to another template with
|
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* additional options. If so, call ourselves recursively to create the
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* next table(s).
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*/
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if (specPtr->clientData != NULL) {
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tablePtr->nextPtr = (OptionTable *)
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Tk_CreateOptionTable(interp, specPtr->clientData);
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}
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return (Tk_OptionTable) tablePtr;
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}
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/*
|
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*----------------------------------------------------------------------
|
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*
|
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* Tk_DeleteOptionTable --
|
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*
|
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* Called to release resources used by an option table when the table is
|
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* no longer needed.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
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* Side effects:
|
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* The option table and associated resources (such as additional option
|
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* tables chained off it) are destroyed.
|
||
*
|
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*----------------------------------------------------------------------
|
||
*/
|
||
|
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void
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Tk_DeleteOptionTable(
|
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Tk_OptionTable optionTable) /* The option table to delete. */
|
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{
|
||
OptionTable *tablePtr = (OptionTable *) optionTable;
|
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Option *optionPtr;
|
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int count;
|
||
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tablePtr->refCount--;
|
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if (tablePtr->refCount > 0) {
|
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return;
|
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}
|
||
|
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if (tablePtr->nextPtr != NULL) {
|
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Tk_DeleteOptionTable((Tk_OptionTable) tablePtr->nextPtr);
|
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}
|
||
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for (count = tablePtr->numOptions, optionPtr = tablePtr->options;
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count > 0; count--, optionPtr++) {
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if (optionPtr->defaultPtr != NULL) {
|
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Tcl_DecrRefCount(optionPtr->defaultPtr);
|
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}
|
||
if (((optionPtr->specPtr->type == TK_OPTION_COLOR)
|
||
|| (optionPtr->specPtr->type == TK_OPTION_BORDER))
|
||
&& (optionPtr->extra.monoColorPtr != NULL)) {
|
||
Tcl_DecrRefCount(optionPtr->extra.monoColorPtr);
|
||
}
|
||
}
|
||
Tcl_DeleteHashEntry(tablePtr->hashEntryPtr);
|
||
ckfree(tablePtr);
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* Tk_InitOptions --
|
||
*
|
||
* This function is invoked when an object such as a widget is created.
|
||
* It supplies an initial value for each configuration option (the value
|
||
* may come from the option database, a system default, or the default in
|
||
* the option table).
|
||
*
|
||
* Results:
|
||
* The return value is TCL_OK if the function completed successfully, and
|
||
* TCL_ERROR if one of the initial values was bogus. If an error occurs
|
||
* and interp isn't NULL, then an error message will be left in its
|
||
* result.
|
||
*
|
||
* Side effects:
|
||
* Fields of recordPtr are filled in with initial values.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
Tk_InitOptions(
|
||
Tcl_Interp *interp, /* Interpreter for error reporting. NULL means
|
||
* don't leave an error message. */
|
||
char *recordPtr, /* Pointer to the record to configure. Note:
|
||
* the caller should have properly initialized
|
||
* the record with NULL pointers for each
|
||
* option value. */
|
||
Tk_OptionTable optionTable, /* The token which matches the config specs
|
||
* for the widget in question. */
|
||
Tk_Window tkwin) /* Certain options types (such as
|
||
* TK_OPTION_COLOR) need fields out of the
|
||
* window they are used in to be able to
|
||
* calculate their values. Not needed unless
|
||
* one of these options is in the configSpecs
|
||
* record. */
|
||
{
|
||
OptionTable *tablePtr = (OptionTable *) optionTable;
|
||
Option *optionPtr;
|
||
int count;
|
||
Tk_Uid value;
|
||
Tcl_Obj *valuePtr;
|
||
enum {
|
||
OPTION_DATABASE, SYSTEM_DEFAULT, TABLE_DEFAULT
|
||
} source;
|
||
|
||
/*
|
||
* If this table chains to other tables, handle their initialization
|
||
* first. That way, if both tables refer to the same field of the record,
|
||
* the value in the first table will win.
|
||
*/
|
||
|
||
if (tablePtr->nextPtr != NULL) {
|
||
if (Tk_InitOptions(interp, recordPtr,
|
||
(Tk_OptionTable) tablePtr->nextPtr, tkwin) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Iterate over all of the options in the table, initializing each in
|
||
* turn.
|
||
*/
|
||
|
||
for (optionPtr = tablePtr->options, count = tablePtr->numOptions;
|
||
count > 0; optionPtr++, count--) {
|
||
/*
|
||
* If we specify TK_OPTION_DONT_SET_DEFAULT, then the user has
|
||
* processed and set a default for this already.
|
||
*/
|
||
|
||
if ((optionPtr->specPtr->type == TK_OPTION_SYNONYM) ||
|
||
(optionPtr->specPtr->flags & TK_OPTION_DONT_SET_DEFAULT)) {
|
||
continue;
|
||
}
|
||
source = TABLE_DEFAULT;
|
||
|
||
/*
|
||
* We look in three places for the initial value, using the first
|
||
* non-NULL value that we find. First, check the option database.
|
||
*/
|
||
|
||
valuePtr = NULL;
|
||
if (optionPtr->dbNameUID != NULL) {
|
||
value = Tk_GetOption(tkwin, optionPtr->dbNameUID,
|
||
optionPtr->dbClassUID);
|
||
if (value != NULL) {
|
||
valuePtr = Tcl_NewStringObj(value, -1);
|
||
source = OPTION_DATABASE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Second, check for a system-specific default value.
|
||
*/
|
||
|
||
if ((valuePtr == NULL)
|
||
&& (optionPtr->dbNameUID != NULL)) {
|
||
valuePtr = TkpGetSystemDefault(tkwin, optionPtr->dbNameUID,
|
||
optionPtr->dbClassUID);
|
||
if (valuePtr != NULL) {
|
||
source = SYSTEM_DEFAULT;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Third and last, use the default value supplied by the option table.
|
||
* In the case of color objects, we pick one of two values depending
|
||
* on whether the screen is mono or color.
|
||
*/
|
||
|
||
if (valuePtr == NULL) {
|
||
if ((tkwin != NULL)
|
||
&& ((optionPtr->specPtr->type == TK_OPTION_COLOR)
|
||
|| (optionPtr->specPtr->type == TK_OPTION_BORDER))
|
||
&& (Tk_Depth(tkwin) <= 1)
|
||
&& (optionPtr->extra.monoColorPtr != NULL)) {
|
||
valuePtr = optionPtr->extra.monoColorPtr;
|
||
} else {
|
||
valuePtr = optionPtr->defaultPtr;
|
||
}
|
||
}
|
||
|
||
if (valuePtr == NULL) {
|
||
continue;
|
||
}
|
||
|
||
/*
|
||
* Bump the reference count on valuePtr, so that it is strongly
|
||
* referenced here, and will be properly free'd when finished,
|
||
* regardless of what DoObjConfig does.
|
||
*/
|
||
|
||
Tcl_IncrRefCount(valuePtr);
|
||
|
||
if (DoObjConfig(interp, recordPtr, optionPtr, valuePtr, tkwin,
|
||
NULL) != TCL_OK) {
|
||
if (interp != NULL) {
|
||
char msg[200];
|
||
|
||
switch (source) {
|
||
case OPTION_DATABASE:
|
||
sprintf(msg, "\n (database entry for \"%.50s\")",
|
||
optionPtr->specPtr->optionName);
|
||
break;
|
||
case SYSTEM_DEFAULT:
|
||
sprintf(msg, "\n (system default for \"%.50s\")",
|
||
optionPtr->specPtr->optionName);
|
||
break;
|
||
case TABLE_DEFAULT:
|
||
sprintf(msg, "\n (default value for \"%.50s\")",
|
||
optionPtr->specPtr->optionName);
|
||
}
|
||
if (tkwin != NULL) {
|
||
sprintf(msg + strlen(msg) - 1, " in widget \"%.50s\")",
|
||
Tk_PathName(tkwin));
|
||
}
|
||
Tcl_AddErrorInfo(interp, msg);
|
||
}
|
||
Tcl_DecrRefCount(valuePtr);
|
||
return TCL_ERROR;
|
||
}
|
||
Tcl_DecrRefCount(valuePtr);
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* DoObjConfig --
|
||
*
|
||
* This function applies a new value for a configuration option to the
|
||
* record being configured.
|
||
*
|
||
* Results:
|
||
* The return value is TCL_OK if the function completed successfully. If
|
||
* an error occurred then TCL_ERROR is returned and an error message is
|
||
* left in interp's result, if interp isn't NULL. In addition, if
|
||
* oldValuePtrPtr isn't NULL then it *oldValuePtrPtr is filled in with a
|
||
* pointer to the option's old value.
|
||
*
|
||
* Side effects:
|
||
* RecordPtr gets modified to hold the new value in the form of a
|
||
* Tcl_Obj, an internal representation, or both. The old value is freed
|
||
* if oldValuePtrPtr is NULL.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
DoObjConfig(
|
||
Tcl_Interp *interp, /* Interpreter for error reporting. If NULL,
|
||
* then no message is left if an error
|
||
* occurs. */
|
||
char *recordPtr, /* The record to modify to hold the new option
|
||
* value. */
|
||
Option *optionPtr, /* Pointer to information about the option. */
|
||
Tcl_Obj *valuePtr, /* New value for option. */
|
||
Tk_Window tkwin, /* Window in which option will be used (needed
|
||
* to allocate resources for some options).
|
||
* May be NULL if the option doesn't require
|
||
* window-related resources. */
|
||
Tk_SavedOption *savedOptionPtr)
|
||
/* If NULL, the old value for the option will
|
||
* be freed. If non-NULL, the old value will
|
||
* be stored here, and it becomes the property
|
||
* of the caller (the caller must eventually
|
||
* free the old value). */
|
||
{
|
||
Tcl_Obj **slotPtrPtr, *oldPtr;
|
||
char *internalPtr; /* Points to location in record where internal
|
||
* representation of value should be stored,
|
||
* or NULL. */
|
||
char *oldInternalPtr; /* Points to location in which to save old
|
||
* internal representation of value. */
|
||
Tk_SavedOption internal; /* Used to save the old internal
|
||
* representation of the value if
|
||
* savedOptionPtr is NULL. */
|
||
const Tk_OptionSpec *specPtr;
|
||
int nullOK;
|
||
|
||
/*
|
||
* Save the old object form for the value, if there is one.
|
||
*/
|
||
|
||
specPtr = optionPtr->specPtr;
|
||
if (specPtr->objOffset >= 0) {
|
||
slotPtrPtr = (Tcl_Obj **) (recordPtr + specPtr->objOffset);
|
||
oldPtr = *slotPtrPtr;
|
||
} else {
|
||
slotPtrPtr = NULL;
|
||
oldPtr = NULL;
|
||
}
|
||
|
||
/*
|
||
* Apply the new value in a type-specific way. Also remember the old
|
||
* object and internal forms, if they exist.
|
||
*/
|
||
|
||
if (specPtr->internalOffset >= 0) {
|
||
internalPtr = recordPtr + specPtr->internalOffset;
|
||
} else {
|
||
internalPtr = NULL;
|
||
}
|
||
if (savedOptionPtr != NULL) {
|
||
savedOptionPtr->optionPtr = optionPtr;
|
||
savedOptionPtr->valuePtr = oldPtr;
|
||
oldInternalPtr = (char *) &savedOptionPtr->internalForm;
|
||
} else {
|
||
oldInternalPtr = (char *) &internal.internalForm;
|
||
}
|
||
nullOK = (optionPtr->specPtr->flags & TK_OPTION_NULL_OK);
|
||
switch (optionPtr->specPtr->type) {
|
||
case TK_OPTION_BOOLEAN: {
|
||
int newBool;
|
||
|
||
if (Tcl_GetBooleanFromObj(interp, valuePtr, &newBool) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((int *) oldInternalPtr) = *((int *) internalPtr);
|
||
*((int *) internalPtr) = newBool;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_INT: {
|
||
int newInt;
|
||
|
||
if (Tcl_GetIntFromObj(interp, valuePtr, &newInt) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((int *) oldInternalPtr) = *((int *) internalPtr);
|
||
*((int *) internalPtr) = newInt;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_DOUBLE: {
|
||
double newDbl;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newDbl = 0;
|
||
} else {
|
||
if (Tcl_GetDoubleFromObj(interp, valuePtr, &newDbl) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
|
||
if (internalPtr != NULL) {
|
||
*((double *) oldInternalPtr) = *((double *) internalPtr);
|
||
*((double *) internalPtr) = newDbl;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_STRING: {
|
||
char *newStr;
|
||
const char *value;
|
||
int length;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
}
|
||
if (internalPtr != NULL) {
|
||
if (valuePtr != NULL) {
|
||
value = Tcl_GetStringFromObj(valuePtr, &length);
|
||
newStr = ckalloc(length + 1);
|
||
strcpy(newStr, value);
|
||
} else {
|
||
newStr = NULL;
|
||
}
|
||
*((char **) oldInternalPtr) = *((char **) internalPtr);
|
||
*((char **) internalPtr) = newStr;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_STRING_TABLE: {
|
||
int newValue;
|
||
|
||
if (Tcl_GetIndexFromObjStruct(interp, valuePtr,
|
||
optionPtr->specPtr->clientData, sizeof(char *),
|
||
optionPtr->specPtr->optionName+1, 0, &newValue) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((int *) oldInternalPtr) = *((int *) internalPtr);
|
||
*((int *) internalPtr) = newValue;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_COLOR: {
|
||
XColor *newPtr;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newPtr = NULL;
|
||
} else {
|
||
newPtr = Tk_AllocColorFromObj(interp, tkwin, valuePtr);
|
||
if (newPtr == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((XColor **) oldInternalPtr) = *((XColor **) internalPtr);
|
||
*((XColor **) internalPtr) = newPtr;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_FONT: {
|
||
Tk_Font newFont;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newFont = NULL;
|
||
} else {
|
||
newFont = Tk_AllocFontFromObj(interp, tkwin, valuePtr);
|
||
if (newFont == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_Font *) oldInternalPtr) = *((Tk_Font *) internalPtr);
|
||
*((Tk_Font *) internalPtr) = newFont;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_STYLE: {
|
||
Tk_Style newStyle;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newStyle = NULL;
|
||
} else {
|
||
newStyle = Tk_AllocStyleFromObj(interp, valuePtr);
|
||
if (newStyle == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_Style *) oldInternalPtr) = *((Tk_Style *) internalPtr);
|
||
*((Tk_Style *) internalPtr) = newStyle;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_BITMAP: {
|
||
Pixmap newBitmap;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newBitmap = None;
|
||
} else {
|
||
newBitmap = Tk_AllocBitmapFromObj(interp, tkwin, valuePtr);
|
||
if (newBitmap == None) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Pixmap *) oldInternalPtr) = *((Pixmap *) internalPtr);
|
||
*((Pixmap *) internalPtr) = newBitmap;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_BORDER: {
|
||
Tk_3DBorder newBorder;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newBorder = NULL;
|
||
} else {
|
||
newBorder = Tk_Alloc3DBorderFromObj(interp, tkwin, valuePtr);
|
||
if (newBorder == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_3DBorder *) oldInternalPtr) = *((Tk_3DBorder *) internalPtr);
|
||
*((Tk_3DBorder *) internalPtr) = newBorder;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_RELIEF: {
|
||
int newRelief;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newRelief = TK_RELIEF_NULL;
|
||
} else {
|
||
if (Tk_GetReliefFromObj(interp, valuePtr, &newRelief) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((int *) oldInternalPtr) = *((int *) internalPtr);
|
||
*((int *) internalPtr) = newRelief;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_CURSOR: {
|
||
Tk_Cursor newCursor;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
newCursor = NULL;
|
||
valuePtr = NULL;
|
||
} else {
|
||
newCursor = Tk_AllocCursorFromObj(interp, tkwin, valuePtr);
|
||
if (newCursor == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_Cursor *) oldInternalPtr) = *((Tk_Cursor *) internalPtr);
|
||
*((Tk_Cursor *) internalPtr) = newCursor;
|
||
}
|
||
Tk_DefineCursor(tkwin, newCursor);
|
||
break;
|
||
}
|
||
case TK_OPTION_JUSTIFY: {
|
||
Tk_Justify newJustify;
|
||
|
||
if (Tk_GetJustifyFromObj(interp, valuePtr, &newJustify) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_Justify *) oldInternalPtr) = *((Tk_Justify *) internalPtr);
|
||
*((Tk_Justify *) internalPtr) = newJustify;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_ANCHOR: {
|
||
Tk_Anchor newAnchor;
|
||
|
||
if (Tk_GetAnchorFromObj(interp, valuePtr, &newAnchor) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_Anchor *) oldInternalPtr) = *((Tk_Anchor *) internalPtr);
|
||
*((Tk_Anchor *) internalPtr) = newAnchor;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_PIXELS: {
|
||
int newPixels;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newPixels = 0;
|
||
} else {
|
||
if (Tk_GetPixelsFromObj(interp, tkwin, valuePtr,
|
||
&newPixels) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((int *) oldInternalPtr) = *((int *) internalPtr);
|
||
*((int *) internalPtr) = newPixels;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_WINDOW: {
|
||
Tk_Window newWin;
|
||
|
||
if (nullOK && ObjectIsEmpty(valuePtr)) {
|
||
valuePtr = NULL;
|
||
newWin = NULL;
|
||
} else {
|
||
if (TkGetWindowFromObj(interp, tkwin, valuePtr,
|
||
&newWin) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
if (internalPtr != NULL) {
|
||
*((Tk_Window *) oldInternalPtr) = *((Tk_Window *) internalPtr);
|
||
*((Tk_Window *) internalPtr) = newWin;
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_CUSTOM: {
|
||
const Tk_ObjCustomOption *custom = optionPtr->extra.custom;
|
||
|
||
if (custom->setProc(custom->clientData, interp, tkwin,
|
||
&valuePtr, recordPtr, optionPtr->specPtr->internalOffset,
|
||
(char *)oldInternalPtr, optionPtr->specPtr->flags) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
break;
|
||
}
|
||
|
||
default:
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"bad config table: unknown type %d",
|
||
optionPtr->specPtr->type));
|
||
Tcl_SetErrorCode(interp, "TK", "BAD_CONFIG", NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Release resources associated with the old value, if we're not returning
|
||
* it to the caller, then install the new object value into the record.
|
||
*/
|
||
|
||
if (savedOptionPtr == NULL) {
|
||
if (optionPtr->flags & OPTION_NEEDS_FREEING) {
|
||
FreeResources(optionPtr, oldPtr, oldInternalPtr, tkwin);
|
||
}
|
||
if (oldPtr != NULL) {
|
||
Tcl_DecrRefCount(oldPtr);
|
||
}
|
||
}
|
||
if (slotPtrPtr != NULL) {
|
||
*slotPtrPtr = valuePtr;
|
||
if (valuePtr != NULL) {
|
||
Tcl_IncrRefCount(valuePtr);
|
||
}
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ObjectIsEmpty --
|
||
*
|
||
* This function tests whether the string value of an object is empty.
|
||
*
|
||
* Results:
|
||
* The return value is 1 if the string value of objPtr has length zero,
|
||
* and 0 otherwise.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
ObjectIsEmpty(
|
||
Tcl_Obj *objPtr) /* Object to test. May be NULL. */
|
||
{
|
||
if (objPtr == NULL) {
|
||
return 1;
|
||
}
|
||
if (objPtr->bytes == NULL) {
|
||
Tcl_GetString(objPtr);
|
||
}
|
||
return (objPtr->length == 0);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* GetOption --
|
||
*
|
||
* This function searches through a chained option table to find the
|
||
* entry for a particular option name.
|
||
*
|
||
* Results:
|
||
* The return value is a pointer to the matching entry, or NULL if no
|
||
* matching entry could be found. Note: if the matching entry is a
|
||
* synonym then this function returns a pointer to the synonym entry,
|
||
* *not* the "real" entry that the synonym refers to.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static Option *
|
||
GetOption(
|
||
const char *name, /* String balue to be looked up in the option
|
||
* table. */
|
||
OptionTable *tablePtr) /* Table in which to look up name. */
|
||
{
|
||
Option *bestPtr, *optionPtr;
|
||
OptionTable *tablePtr2;
|
||
const char *p1, *p2;
|
||
int count;
|
||
|
||
/*
|
||
* Search through all of the option tables in the chain to find the best
|
||
* match. Some tricky aspects:
|
||
*
|
||
* 1. We have to accept unique abbreviations.
|
||
* 2. The same name could appear in different tables in the chain. If this
|
||
* happens, we use the entry from the first table. We have to be
|
||
* careful to distinguish this case from an ambiguous abbreviation.
|
||
*/
|
||
|
||
bestPtr = NULL;
|
||
for (tablePtr2 = tablePtr; tablePtr2 != NULL;
|
||
tablePtr2 = tablePtr2->nextPtr) {
|
||
for (optionPtr = tablePtr2->options, count = tablePtr2->numOptions;
|
||
count > 0; optionPtr++, count--) {
|
||
for (p1 = name, p2 = optionPtr->specPtr->optionName;
|
||
*p1 == *p2; p1++, p2++) {
|
||
if (*p1 == 0) {
|
||
/*
|
||
* This is an exact match. We're done.
|
||
*/
|
||
|
||
return optionPtr;
|
||
}
|
||
}
|
||
if (*p1 == 0) {
|
||
/*
|
||
* The name is an abbreviation for this option. Keep to make
|
||
* sure that the abbreviation only matches one option name.
|
||
* If we've already found a match in the past, then it is an
|
||
* error unless the full names for the two options are
|
||
* identical; in this case, the first option overrides the
|
||
* second.
|
||
*/
|
||
|
||
if (bestPtr == NULL) {
|
||
bestPtr = optionPtr;
|
||
} else if (strcmp(bestPtr->specPtr->optionName,
|
||
optionPtr->specPtr->optionName) != 0) {
|
||
return NULL;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Return whatever we have found, which could be NULL if nothing
|
||
* matched. The multiple-matching case is handled above.
|
||
*/
|
||
|
||
return bestPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* GetOptionFromObj --
|
||
*
|
||
* This function searches through a chained option table to find the
|
||
* entry for a particular option name.
|
||
*
|
||
* Results:
|
||
* The return value is a pointer to the matching entry, or NULL if no
|
||
* matching entry could be found. If NULL is returned and interp is not
|
||
* NULL than an error message is left in its result. Note: if the
|
||
* matching entry is a synonym then this function returns a pointer to
|
||
* the synonym entry, *not* the "real" entry that the synonym refers to.
|
||
*
|
||
* Side effects:
|
||
* Information about the matching entry is cached in the object
|
||
* containing the name, so that future lookups can proceed more quickly.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static Option *
|
||
GetOptionFromObj(
|
||
Tcl_Interp *interp, /* Used only for error reporting; if NULL no
|
||
* message is left after an error. */
|
||
Tcl_Obj *objPtr, /* Object whose string value is to be looked
|
||
* up in the option table. */
|
||
OptionTable *tablePtr) /* Table in which to look up objPtr. */
|
||
{
|
||
Option *bestPtr;
|
||
const char *name;
|
||
|
||
/*
|
||
* First, check to see if the object already has the answer cached.
|
||
*/
|
||
|
||
if (objPtr->typePtr == &optionObjType) {
|
||
if (objPtr->internalRep.twoPtrValue.ptr1 == (void *) tablePtr) {
|
||
return (Option *) objPtr->internalRep.twoPtrValue.ptr2;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* The answer isn't cached.
|
||
*/
|
||
|
||
name = Tcl_GetString(objPtr);
|
||
bestPtr = GetOption(name, tablePtr);
|
||
if (bestPtr == NULL) {
|
||
goto error;
|
||
}
|
||
|
||
if ((objPtr->typePtr != NULL)
|
||
&& (objPtr->typePtr->freeIntRepProc != NULL)) {
|
||
objPtr->typePtr->freeIntRepProc(objPtr);
|
||
}
|
||
objPtr->internalRep.twoPtrValue.ptr1 = (void *) tablePtr;
|
||
objPtr->internalRep.twoPtrValue.ptr2 = (void *) bestPtr;
|
||
objPtr->typePtr = &optionObjType;
|
||
tablePtr->refCount++;
|
||
return bestPtr;
|
||
|
||
error:
|
||
if (interp != NULL) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"unknown option \"%s\"", name));
|
||
Tcl_SetErrorCode(interp, "TK", "LOOKUP", "OPTION", name, NULL);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkGetOptionSpec --
|
||
*
|
||
* This function searches through a chained option table to find the
|
||
* option spec for a particular option name.
|
||
*
|
||
* Results:
|
||
* The return value is a pointer to the option spec of the matching
|
||
* entry, or NULL if no matching entry could be found. Note: if the
|
||
* matching entry is a synonym then this function returns a pointer to
|
||
* the option spec of the synonym entry, *not* the "real" entry that the
|
||
* synonym refers to. Note: this call is primarily used by the style
|
||
* management code (tkStyle.c) to look up an element's option spec into a
|
||
* widget's option table.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
const Tk_OptionSpec *
|
||
TkGetOptionSpec(
|
||
const char *name, /* String value to be looked up. */
|
||
Tk_OptionTable optionTable) /* Table in which to look up name. */
|
||
{
|
||
Option *optionPtr;
|
||
|
||
optionPtr = GetOption(name, (OptionTable *) optionTable);
|
||
if (optionPtr == NULL) {
|
||
return NULL;
|
||
}
|
||
return optionPtr->specPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* FreeOptionInternalRep --
|
||
*
|
||
* Part of the option Tcl object type implementation. Frees the storage
|
||
* associated with a option object's internal representation unless it
|
||
* is still in use.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The option object's internal rep is marked invalid and its memory
|
||
* gets freed unless it is still in use somewhere. In that case the
|
||
* cleanup is delayed until the last reference goes away.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
FreeOptionInternalRep(
|
||
register Tcl_Obj *objPtr) /* Object whose internal rep to free. */
|
||
{
|
||
register Tk_OptionTable tablePtr = (Tk_OptionTable) objPtr->internalRep.twoPtrValue.ptr1;
|
||
|
||
Tk_DeleteOptionTable(tablePtr);
|
||
objPtr->typePtr = NULL;
|
||
objPtr->internalRep.twoPtrValue.ptr1 = NULL;
|
||
objPtr->internalRep.twoPtrValue.ptr2 = NULL;
|
||
}
|
||
|
||
/*
|
||
*---------------------------------------------------------------------------
|
||
*
|
||
* DupOptionInternalRep --
|
||
*
|
||
* When a cached option object is duplicated, this is called to update the
|
||
* internal reps.
|
||
*
|
||
*---------------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DupOptionInternalRep(
|
||
Tcl_Obj *srcObjPtr, /* The object we are copying from. */
|
||
Tcl_Obj *dupObjPtr) /* The object we are copying to. */
|
||
{
|
||
register OptionTable *tablePtr = (OptionTable *) srcObjPtr->internalRep.twoPtrValue.ptr1;
|
||
tablePtr->refCount++;
|
||
dupObjPtr->typePtr = srcObjPtr->typePtr;
|
||
dupObjPtr->internalRep = srcObjPtr->internalRep;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* Tk_SetOptions --
|
||
*
|
||
* Process one or more name-value pairs for configuration options and
|
||
* fill in fields of a record with new values.
|
||
*
|
||
* Results:
|
||
* If all goes well then TCL_OK is returned and the old values of any
|
||
* modified objects are saved in *savePtr, if it isn't NULL (the caller
|
||
* must eventually call Tk_RestoreSavedOptions or Tk_FreeSavedOptions to
|
||
* free the contents of *savePtr). In addition, if maskPtr isn't NULL
|
||
* then *maskPtr is filled in with the OR of the typeMask bits from all
|
||
* modified options. If an error occurs then TCL_ERROR is returned and a
|
||
* message is left in interp's result unless interp is NULL; nothing is
|
||
* saved in *savePtr or *maskPtr in this case.
|
||
*
|
||
* Side effects:
|
||
* The fields of recordPtr get filled in with object pointers from
|
||
* objc/objv. Old information in widgRec's fields gets recycled.
|
||
* Information may be left at *savePtr.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
Tk_SetOptions(
|
||
Tcl_Interp *interp, /* Interpreter for error reporting. If NULL,
|
||
* then no error message is returned.*/
|
||
char *recordPtr, /* The record to configure. */
|
||
Tk_OptionTable optionTable, /* Describes valid options. */
|
||
int objc, /* The number of elements in objv. */
|
||
Tcl_Obj *const objv[], /* Contains one or more name-value pairs. */
|
||
Tk_Window tkwin, /* Window associated with the thing being
|
||
* configured; needed for some options (such
|
||
* as colors). */
|
||
Tk_SavedOptions *savePtr, /* If non-NULL, the old values of modified
|
||
* options are saved here so that they can be
|
||
* restored after an error. */
|
||
int *maskPtr) /* It non-NULL, this word is modified on a
|
||
* successful return to hold the bit-wise OR
|
||
* of the typeMask fields of all options that
|
||
* were modified by this call. Used by the
|
||
* caller to figure out which options actually
|
||
* changed. */
|
||
{
|
||
OptionTable *tablePtr = (OptionTable *) optionTable;
|
||
Option *optionPtr;
|
||
Tk_SavedOptions *lastSavePtr, *newSavePtr;
|
||
int mask;
|
||
|
||
if (savePtr != NULL) {
|
||
savePtr->recordPtr = recordPtr;
|
||
savePtr->tkwin = tkwin;
|
||
savePtr->numItems = 0;
|
||
savePtr->nextPtr = NULL;
|
||
}
|
||
lastSavePtr = savePtr;
|
||
|
||
/*
|
||
* Scan through all of the arguments, processing those that match entries
|
||
* in the option table.
|
||
*/
|
||
|
||
mask = 0;
|
||
for ( ; objc > 0; objc -= 2, objv += 2) {
|
||
optionPtr = GetOptionFromObj(interp, objv[0], tablePtr);
|
||
if (optionPtr == NULL) {
|
||
goto error;
|
||
}
|
||
if (optionPtr->specPtr->type == TK_OPTION_SYNONYM) {
|
||
optionPtr = optionPtr->extra.synonymPtr;
|
||
}
|
||
|
||
if (objc < 2) {
|
||
if (interp != NULL) {
|
||
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
|
||
"value for \"%s\" missing",
|
||
Tcl_GetString(*objv)));
|
||
Tcl_SetErrorCode(interp, "TK", "VALUE_MISSING", NULL);
|
||
goto error;
|
||
}
|
||
}
|
||
if ((savePtr != NULL)
|
||
&& (lastSavePtr->numItems >= TK_NUM_SAVED_OPTIONS)) {
|
||
/*
|
||
* We've run out of space for saving old option values. Allocate
|
||
* more space.
|
||
*/
|
||
|
||
newSavePtr = ckalloc(sizeof(Tk_SavedOptions));
|
||
newSavePtr->recordPtr = recordPtr;
|
||
newSavePtr->tkwin = tkwin;
|
||
newSavePtr->numItems = 0;
|
||
newSavePtr->nextPtr = NULL;
|
||
lastSavePtr->nextPtr = newSavePtr;
|
||
lastSavePtr = newSavePtr;
|
||
}
|
||
if (DoObjConfig(interp, recordPtr, optionPtr, objv[1], tkwin,
|
||
(savePtr != NULL) ? &lastSavePtr->items[lastSavePtr->numItems]
|
||
: NULL) != TCL_OK) {
|
||
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
|
||
"\n (processing \"%.40s\" option)",
|
||
Tcl_GetString(*objv)));
|
||
goto error;
|
||
}
|
||
if (savePtr != NULL) {
|
||
lastSavePtr->numItems++;
|
||
}
|
||
mask |= optionPtr->specPtr->typeMask;
|
||
}
|
||
if (maskPtr != NULL) {
|
||
*maskPtr = mask;
|
||
}
|
||
return TCL_OK;
|
||
|
||
error:
|
||
if (savePtr != NULL) {
|
||
Tk_RestoreSavedOptions(savePtr);
|
||
}
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tk_RestoreSavedOptions --
|
||
*
|
||
* This function undoes the effect of a previous call to Tk_SetOptions by
|
||
* restoring all of the options to their value before the call to
|
||
* Tk_SetOptions.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The configutation record is restored and all the information stored in
|
||
* savePtr is freed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Tk_RestoreSavedOptions(
|
||
Tk_SavedOptions *savePtr) /* Holds saved option information; must have
|
||
* been passed to Tk_SetOptions. */
|
||
{
|
||
int i;
|
||
Option *optionPtr;
|
||
Tcl_Obj *newPtr; /* New object value of option, which we
|
||
* replace with old value and free. Taken from
|
||
* record. */
|
||
char *internalPtr; /* Points to internal value of option in
|
||
* record. */
|
||
const Tk_OptionSpec *specPtr;
|
||
|
||
/*
|
||
* Be sure to restore the options in the opposite order they were set.
|
||
* This is important because it's possible that the same option name was
|
||
* used twice in a single call to Tk_SetOptions.
|
||
*/
|
||
|
||
if (savePtr->nextPtr != NULL) {
|
||
Tk_RestoreSavedOptions(savePtr->nextPtr);
|
||
ckfree(savePtr->nextPtr);
|
||
savePtr->nextPtr = NULL;
|
||
}
|
||
for (i = savePtr->numItems - 1; i >= 0; i--) {
|
||
optionPtr = savePtr->items[i].optionPtr;
|
||
specPtr = optionPtr->specPtr;
|
||
|
||
/*
|
||
* First free the new value of the option, which is currently in the
|
||
* record.
|
||
*/
|
||
|
||
if (specPtr->objOffset >= 0) {
|
||
newPtr = *((Tcl_Obj **) (savePtr->recordPtr + specPtr->objOffset));
|
||
} else {
|
||
newPtr = NULL;
|
||
}
|
||
if (specPtr->internalOffset >= 0) {
|
||
internalPtr = savePtr->recordPtr + specPtr->internalOffset;
|
||
} else {
|
||
internalPtr = NULL;
|
||
}
|
||
if (optionPtr->flags & OPTION_NEEDS_FREEING) {
|
||
FreeResources(optionPtr, newPtr, internalPtr, savePtr->tkwin);
|
||
}
|
||
if (newPtr != NULL) {
|
||
Tcl_DecrRefCount(newPtr);
|
||
}
|
||
|
||
/*
|
||
* Now restore the old value of the option.
|
||
*/
|
||
|
||
if (specPtr->objOffset >= 0) {
|
||
*((Tcl_Obj **) (savePtr->recordPtr + specPtr->objOffset))
|
||
= savePtr->items[i].valuePtr;
|
||
}
|
||
if (specPtr->internalOffset >= 0) {
|
||
register char *ptr = (char *) &savePtr->items[i].internalForm;
|
||
|
||
CLANG_ASSERT(internalPtr);
|
||
switch (specPtr->type) {
|
||
case TK_OPTION_BOOLEAN:
|
||
*((int *) internalPtr) = *((int *) ptr);
|
||
break;
|
||
case TK_OPTION_INT:
|
||
*((int *) internalPtr) = *((int *) ptr);
|
||
break;
|
||
case TK_OPTION_DOUBLE:
|
||
*((double *) internalPtr) = *((double *) ptr);
|
||
break;
|
||
case TK_OPTION_STRING:
|
||
*((char **) internalPtr) = *((char **) ptr);
|
||
break;
|
||
case TK_OPTION_STRING_TABLE:
|
||
*((int *) internalPtr) = *((int *) ptr);
|
||
break;
|
||
case TK_OPTION_COLOR:
|
||
*((XColor **) internalPtr) = *((XColor **) ptr);
|
||
break;
|
||
case TK_OPTION_FONT:
|
||
*((Tk_Font *) internalPtr) = *((Tk_Font *) ptr);
|
||
break;
|
||
case TK_OPTION_STYLE:
|
||
*((Tk_Style *) internalPtr) = *((Tk_Style *) ptr);
|
||
break;
|
||
case TK_OPTION_BITMAP:
|
||
*((Pixmap *) internalPtr) = *((Pixmap *) ptr);
|
||
break;
|
||
case TK_OPTION_BORDER:
|
||
*((Tk_3DBorder *) internalPtr) = *((Tk_3DBorder *) ptr);
|
||
break;
|
||
case TK_OPTION_RELIEF:
|
||
*((int *) internalPtr) = *((int *) ptr);
|
||
break;
|
||
case TK_OPTION_CURSOR:
|
||
*((Tk_Cursor *) internalPtr) = *((Tk_Cursor *) ptr);
|
||
Tk_DefineCursor(savePtr->tkwin, *((Tk_Cursor *) internalPtr));
|
||
break;
|
||
case TK_OPTION_JUSTIFY:
|
||
*((Tk_Justify *) internalPtr) = *((Tk_Justify *) ptr);
|
||
break;
|
||
case TK_OPTION_ANCHOR:
|
||
*((Tk_Anchor *) internalPtr) = *((Tk_Anchor *) ptr);
|
||
break;
|
||
case TK_OPTION_PIXELS:
|
||
*((int *) internalPtr) = *((int *) ptr);
|
||
break;
|
||
case TK_OPTION_WINDOW:
|
||
*((Tk_Window *) internalPtr) = *((Tk_Window *) ptr);
|
||
break;
|
||
case TK_OPTION_CUSTOM: {
|
||
const Tk_ObjCustomOption *custom = optionPtr->extra.custom;
|
||
|
||
if (custom->restoreProc != NULL) {
|
||
custom->restoreProc(custom->clientData, savePtr->tkwin,
|
||
internalPtr, ptr);
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
Tcl_Panic("bad option type in Tk_RestoreSavedOptions");
|
||
}
|
||
}
|
||
}
|
||
savePtr->numItems = 0;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* Tk_FreeSavedOptions --
|
||
*
|
||
* Free all of the saved configuration option values from a previous call
|
||
* to Tk_SetOptions.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Storage and system resources are freed.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
Tk_FreeSavedOptions(
|
||
Tk_SavedOptions *savePtr) /* Contains options saved in a previous call
|
||
* to Tk_SetOptions. */
|
||
{
|
||
int count;
|
||
Tk_SavedOption *savedOptionPtr;
|
||
|
||
if (savePtr->nextPtr != NULL) {
|
||
Tk_FreeSavedOptions(savePtr->nextPtr);
|
||
ckfree(savePtr->nextPtr);
|
||
}
|
||
for (count = savePtr->numItems,
|
||
savedOptionPtr = &savePtr->items[savePtr->numItems-1];
|
||
count > 0; count--, savedOptionPtr--) {
|
||
if (savedOptionPtr->optionPtr->flags & OPTION_NEEDS_FREEING) {
|
||
FreeResources(savedOptionPtr->optionPtr, savedOptionPtr->valuePtr,
|
||
(char *) &savedOptionPtr->internalForm, savePtr->tkwin);
|
||
}
|
||
if (savedOptionPtr->valuePtr != NULL) {
|
||
Tcl_DecrRefCount(savedOptionPtr->valuePtr);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tk_FreeConfigOptions --
|
||
*
|
||
* Free all resources associated with configuration options.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* All of the Tcl_Obj's in recordPtr that are controlled by configuration
|
||
* options in optionTable are freed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
/* ARGSUSED */
|
||
void
|
||
Tk_FreeConfigOptions(
|
||
char *recordPtr, /* Record whose fields contain current values
|
||
* for options. */
|
||
Tk_OptionTable optionTable, /* Describes legal options. */
|
||
Tk_Window tkwin) /* Window associated with recordPtr; needed
|
||
* for freeing some options. */
|
||
{
|
||
OptionTable *tablePtr;
|
||
Option *optionPtr;
|
||
int count;
|
||
Tcl_Obj **oldPtrPtr, *oldPtr;
|
||
char *oldInternalPtr;
|
||
const Tk_OptionSpec *specPtr;
|
||
|
||
for (tablePtr = (OptionTable *) optionTable; tablePtr != NULL;
|
||
tablePtr = tablePtr->nextPtr) {
|
||
for (optionPtr = tablePtr->options, count = tablePtr->numOptions;
|
||
count > 0; optionPtr++, count--) {
|
||
specPtr = optionPtr->specPtr;
|
||
if (specPtr->type == TK_OPTION_SYNONYM) {
|
||
continue;
|
||
}
|
||
if (specPtr->objOffset >= 0) {
|
||
oldPtrPtr = (Tcl_Obj **) (recordPtr + specPtr->objOffset);
|
||
oldPtr = *oldPtrPtr;
|
||
*oldPtrPtr = NULL;
|
||
} else {
|
||
oldPtr = NULL;
|
||
}
|
||
if (specPtr->internalOffset >= 0) {
|
||
oldInternalPtr = recordPtr + specPtr->internalOffset;
|
||
} else {
|
||
oldInternalPtr = NULL;
|
||
}
|
||
if (optionPtr->flags & OPTION_NEEDS_FREEING) {
|
||
FreeResources(optionPtr, oldPtr, oldInternalPtr, tkwin);
|
||
}
|
||
if (oldPtr != NULL) {
|
||
Tcl_DecrRefCount(oldPtr);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* FreeResources --
|
||
*
|
||
* Free system resources associated with a configuration option, such as
|
||
* colors or fonts.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Any system resources associated with objPtr are released. However,
|
||
* objPtr itself is not freed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
FreeResources(
|
||
Option *optionPtr, /* Description of the configuration option. */
|
||
Tcl_Obj *objPtr, /* The current value of the option, specified
|
||
* as an object. */
|
||
char *internalPtr, /* A pointer to an internal representation for
|
||
* the option's value, such as an int or
|
||
* (XColor *). Only valid if
|
||
* optionPtr->specPtr->internalOffset >= 0. */
|
||
Tk_Window tkwin) /* The window in which this option is used. */
|
||
{
|
||
int internalFormExists;
|
||
|
||
/*
|
||
* If there exists an internal form for the value, use it to free
|
||
* resources (also zero out the internal form). If there is no internal
|
||
* form, then use the object form.
|
||
*/
|
||
|
||
internalFormExists = optionPtr->specPtr->internalOffset >= 0;
|
||
switch (optionPtr->specPtr->type) {
|
||
case TK_OPTION_STRING:
|
||
if (internalFormExists) {
|
||
if (*((char **) internalPtr) != NULL) {
|
||
ckfree(*((char **) internalPtr));
|
||
*((char **) internalPtr) = NULL;
|
||
}
|
||
}
|
||
break;
|
||
case TK_OPTION_COLOR:
|
||
if (internalFormExists) {
|
||
if (*((XColor **) internalPtr) != NULL) {
|
||
Tk_FreeColor(*((XColor **) internalPtr));
|
||
*((XColor **) internalPtr) = NULL;
|
||
}
|
||
} else if (objPtr != NULL) {
|
||
Tk_FreeColorFromObj(tkwin, objPtr);
|
||
}
|
||
break;
|
||
case TK_OPTION_FONT:
|
||
if (internalFormExists) {
|
||
Tk_FreeFont(*((Tk_Font *) internalPtr));
|
||
*((Tk_Font *) internalPtr) = NULL;
|
||
} else if (objPtr != NULL) {
|
||
Tk_FreeFontFromObj(tkwin, objPtr);
|
||
}
|
||
break;
|
||
case TK_OPTION_STYLE:
|
||
if (internalFormExists) {
|
||
Tk_FreeStyle(*((Tk_Style *) internalPtr));
|
||
*((Tk_Style *) internalPtr) = NULL;
|
||
} else if (objPtr != NULL) {
|
||
Tk_FreeStyleFromObj(objPtr);
|
||
}
|
||
break;
|
||
case TK_OPTION_BITMAP:
|
||
if (internalFormExists) {
|
||
if (*((Pixmap *) internalPtr) != None) {
|
||
Tk_FreeBitmap(Tk_Display(tkwin), *((Pixmap *) internalPtr));
|
||
*((Pixmap *) internalPtr) = None;
|
||
}
|
||
} else if (objPtr != NULL) {
|
||
Tk_FreeBitmapFromObj(tkwin, objPtr);
|
||
}
|
||
break;
|
||
case TK_OPTION_BORDER:
|
||
if (internalFormExists) {
|
||
if (*((Tk_3DBorder *) internalPtr) != NULL) {
|
||
Tk_Free3DBorder(*((Tk_3DBorder *) internalPtr));
|
||
*((Tk_3DBorder *) internalPtr) = NULL;
|
||
}
|
||
} else if (objPtr != NULL) {
|
||
Tk_Free3DBorderFromObj(tkwin, objPtr);
|
||
}
|
||
break;
|
||
case TK_OPTION_CURSOR:
|
||
if (internalFormExists) {
|
||
if (*((Tk_Cursor *) internalPtr) != NULL) {
|
||
Tk_FreeCursor(Tk_Display(tkwin), *((Tk_Cursor *) internalPtr));
|
||
*((Tk_Cursor *) internalPtr) = NULL;
|
||
}
|
||
} else if (objPtr != NULL) {
|
||
Tk_FreeCursorFromObj(tkwin, objPtr);
|
||
}
|
||
break;
|
||
case TK_OPTION_CUSTOM: {
|
||
const Tk_ObjCustomOption *custom = optionPtr->extra.custom;
|
||
if (internalFormExists && custom->freeProc != NULL) {
|
||
custom->freeProc(custom->clientData, tkwin, internalPtr);
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* Tk_GetOptionInfo --
|
||
*
|
||
* Returns a list object containing complete information about either a
|
||
* single option or all the configuration options in a table.
|
||
*
|
||
* Results:
|
||
* This function normally returns a pointer to an object. If namePtr
|
||
* isn't NULL, then the result object is a list with five elements: the
|
||
* option's name, its database name, database class, default value, and
|
||
* current value. If the option is a synonym then the list will contain
|
||
* only two values: the option name and the name of the option it refers
|
||
* to. If namePtr is NULL, then information is returned for every option
|
||
* in the option table: the result will have one sub-list (in the form
|
||
* described above) for each option in the table. If an error occurs
|
||
* (e.g. because namePtr isn't valid) then NULL is returned and an error
|
||
* message will be left in interp's result unless interp is NULL.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
Tcl_Obj *
|
||
Tk_GetOptionInfo(
|
||
Tcl_Interp *interp, /* Interpreter for error reporting. If NULL,
|
||
* then no error message is created. */
|
||
char *recordPtr, /* Record whose fields contain current values
|
||
* for options. */
|
||
Tk_OptionTable optionTable, /* Describes all the legal options. */
|
||
Tcl_Obj *namePtr, /* If non-NULL, the string value selects a
|
||
* single option whose info is to be returned.
|
||
* Otherwise info is returned for all options
|
||
* in optionTable. */
|
||
Tk_Window tkwin) /* Window associated with recordPtr; needed to
|
||
* compute correct default value for some
|
||
* options. */
|
||
{
|
||
Tcl_Obj *resultPtr;
|
||
OptionTable *tablePtr = (OptionTable *) optionTable;
|
||
Option *optionPtr;
|
||
int count;
|
||
|
||
/*
|
||
* If information is only wanted for a single configuration spec, then
|
||
* handle that one spec specially.
|
||
*/
|
||
|
||
if (namePtr != NULL) {
|
||
optionPtr = GetOptionFromObj(interp, namePtr, tablePtr);
|
||
if (optionPtr == NULL) {
|
||
return NULL;
|
||
}
|
||
if (optionPtr->specPtr->type == TK_OPTION_SYNONYM) {
|
||
optionPtr = optionPtr->extra.synonymPtr;
|
||
}
|
||
return GetConfigList(recordPtr, optionPtr, tkwin);
|
||
}
|
||
|
||
/*
|
||
* Loop through all the specs, creating a big list with all their
|
||
* information.
|
||
*/
|
||
|
||
resultPtr = Tcl_NewListObj(0, NULL);
|
||
for (; tablePtr != NULL; tablePtr = tablePtr->nextPtr) {
|
||
for (optionPtr = tablePtr->options, count = tablePtr->numOptions;
|
||
count > 0; optionPtr++, count--) {
|
||
Tcl_ListObjAppendElement(interp, resultPtr,
|
||
GetConfigList(recordPtr, optionPtr, tkwin));
|
||
}
|
||
}
|
||
return resultPtr;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* GetConfigList --
|
||
*
|
||
* 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 Tcl_Obj *
|
||
GetConfigList(
|
||
char *recordPtr, /* Pointer to record holding current values of
|
||
* configuration options. */
|
||
Option *optionPtr, /* Pointer to information describing a
|
||
* particular option. */
|
||
Tk_Window tkwin) /* Window corresponding to recordPtr. */
|
||
{
|
||
Tcl_Obj *listPtr, *elementPtr;
|
||
|
||
listPtr = Tcl_NewListObj(0, NULL);
|
||
Tcl_ListObjAppendElement(NULL, listPtr,
|
||
Tcl_NewStringObj(optionPtr->specPtr->optionName, -1));
|
||
|
||
if (optionPtr->specPtr->type == TK_OPTION_SYNONYM) {
|
||
elementPtr = Tcl_NewStringObj(
|
||
optionPtr->extra.synonymPtr->specPtr->optionName, -1);
|
||
Tcl_ListObjAppendElement(NULL, listPtr, elementPtr);
|
||
} else {
|
||
if (optionPtr->dbNameUID == NULL) {
|
||
elementPtr = Tcl_NewObj();
|
||
} else {
|
||
elementPtr = Tcl_NewStringObj(optionPtr->dbNameUID, -1);
|
||
}
|
||
Tcl_ListObjAppendElement(NULL, listPtr, elementPtr);
|
||
|
||
if (optionPtr->dbClassUID == NULL) {
|
||
elementPtr = Tcl_NewObj();
|
||
} else {
|
||
elementPtr = Tcl_NewStringObj(optionPtr->dbClassUID, -1);
|
||
}
|
||
Tcl_ListObjAppendElement(NULL, listPtr, elementPtr);
|
||
|
||
if ((tkwin != NULL) && ((optionPtr->specPtr->type == TK_OPTION_COLOR)
|
||
|| (optionPtr->specPtr->type == TK_OPTION_BORDER))
|
||
&& (Tk_Depth(tkwin) <= 1)
|
||
&& (optionPtr->extra.monoColorPtr != NULL)) {
|
||
elementPtr = optionPtr->extra.monoColorPtr;
|
||
} else if (optionPtr->defaultPtr != NULL) {
|
||
elementPtr = optionPtr->defaultPtr;
|
||
} else {
|
||
elementPtr = Tcl_NewObj();
|
||
}
|
||
Tcl_ListObjAppendElement(NULL, listPtr, elementPtr);
|
||
|
||
if (optionPtr->specPtr->objOffset >= 0) {
|
||
elementPtr = *((Tcl_Obj **) (recordPtr
|
||
+ optionPtr->specPtr->objOffset));
|
||
if (elementPtr == NULL) {
|
||
elementPtr = Tcl_NewObj();
|
||
}
|
||
} else {
|
||
elementPtr = GetObjectForOption(recordPtr, optionPtr, tkwin);
|
||
}
|
||
Tcl_ListObjAppendElement(NULL, listPtr, elementPtr);
|
||
}
|
||
return listPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* GetObjectForOption --
|
||
*
|
||
* This function is called to create an object that contains the value
|
||
* for an option. It is invoked by GetConfigList and Tk_GetOptionValue
|
||
* when only the internal form of an option is stored in the record.
|
||
*
|
||
* Results:
|
||
* The return value is a pointer to a Tcl object. The caller must call
|
||
* Tcl_IncrRefCount on this object to preserve it.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static Tcl_Obj *
|
||
GetObjectForOption(
|
||
char *recordPtr, /* Pointer to record holding current values of
|
||
* configuration options. */
|
||
Option *optionPtr, /* Pointer to information describing an option
|
||
* whose internal value is stored in
|
||
* *recordPtr. */
|
||
Tk_Window tkwin) /* Window corresponding to recordPtr. */
|
||
{
|
||
Tcl_Obj *objPtr;
|
||
char *internalPtr; /* Points to internal value of option in
|
||
* record. */
|
||
|
||
internalPtr = recordPtr + optionPtr->specPtr->internalOffset;
|
||
objPtr = NULL;
|
||
switch (optionPtr->specPtr->type) {
|
||
case TK_OPTION_BOOLEAN:
|
||
objPtr = Tcl_NewIntObj(*((int *) internalPtr));
|
||
break;
|
||
case TK_OPTION_INT:
|
||
objPtr = Tcl_NewIntObj(*((int *) internalPtr));
|
||
break;
|
||
case TK_OPTION_DOUBLE:
|
||
objPtr = Tcl_NewDoubleObj(*((double *) internalPtr));
|
||
break;
|
||
case TK_OPTION_STRING:
|
||
objPtr = Tcl_NewStringObj(*((char **) internalPtr), -1);
|
||
break;
|
||
case TK_OPTION_STRING_TABLE:
|
||
objPtr = Tcl_NewStringObj(((char **) optionPtr->specPtr->clientData)[
|
||
*((int *) internalPtr)], -1);
|
||
break;
|
||
case TK_OPTION_COLOR: {
|
||
XColor *colorPtr = *((XColor **) internalPtr);
|
||
|
||
if (colorPtr != NULL) {
|
||
objPtr = Tcl_NewStringObj(Tk_NameOfColor(colorPtr), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_FONT: {
|
||
Tk_Font tkfont = *((Tk_Font *) internalPtr);
|
||
|
||
if (tkfont != NULL) {
|
||
objPtr = Tcl_NewStringObj(Tk_NameOfFont(tkfont), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_STYLE: {
|
||
Tk_Style style = *((Tk_Style *) internalPtr);
|
||
|
||
if (style != NULL) {
|
||
objPtr = Tcl_NewStringObj(Tk_NameOfStyle(style), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_BITMAP: {
|
||
Pixmap pixmap = *((Pixmap *) internalPtr);
|
||
|
||
if (pixmap != None) {
|
||
objPtr = Tcl_NewStringObj(
|
||
Tk_NameOfBitmap(Tk_Display(tkwin), pixmap), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_BORDER: {
|
||
Tk_3DBorder border = *((Tk_3DBorder *) internalPtr);
|
||
|
||
if (border != NULL) {
|
||
objPtr = Tcl_NewStringObj(Tk_NameOf3DBorder(border), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_RELIEF:
|
||
objPtr = Tcl_NewStringObj(Tk_NameOfRelief(*((int *) internalPtr)), -1);
|
||
break;
|
||
case TK_OPTION_CURSOR: {
|
||
Tk_Cursor cursor = *((Tk_Cursor *) internalPtr);
|
||
|
||
if (cursor != NULL) {
|
||
objPtr = Tcl_NewStringObj(
|
||
Tk_NameOfCursor(Tk_Display(tkwin), cursor), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_JUSTIFY:
|
||
objPtr = Tcl_NewStringObj(Tk_NameOfJustify(
|
||
*((Tk_Justify *) internalPtr)), -1);
|
||
break;
|
||
case TK_OPTION_ANCHOR:
|
||
objPtr = Tcl_NewStringObj(Tk_NameOfAnchor(
|
||
*((Tk_Anchor *) internalPtr)), -1);
|
||
break;
|
||
case TK_OPTION_PIXELS:
|
||
objPtr = Tcl_NewIntObj(*((int *) internalPtr));
|
||
break;
|
||
case TK_OPTION_WINDOW: {
|
||
Tk_Window tkwin = *((Tk_Window *) internalPtr);
|
||
|
||
if (tkwin != NULL) {
|
||
objPtr = Tcl_NewStringObj(Tk_PathName(tkwin), -1);
|
||
}
|
||
break;
|
||
}
|
||
case TK_OPTION_CUSTOM: {
|
||
const Tk_ObjCustomOption *custom = optionPtr->extra.custom;
|
||
|
||
objPtr = custom->getProc(custom->clientData, tkwin, recordPtr,
|
||
optionPtr->specPtr->internalOffset);
|
||
break;
|
||
}
|
||
default:
|
||
Tcl_Panic("bad option type in GetObjectForOption");
|
||
}
|
||
if (objPtr == NULL) {
|
||
objPtr = Tcl_NewObj();
|
||
}
|
||
return objPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tk_GetOptionValue --
|
||
*
|
||
* This function returns the current value of a configuration option.
|
||
*
|
||
* Results:
|
||
* The return value is the object holding the current value of the option
|
||
* given by namePtr. If no such option exists, then the return value is
|
||
* NULL and an error message is left in interp's result (if interp isn't
|
||
* NULL).
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
Tcl_Obj *
|
||
Tk_GetOptionValue(
|
||
Tcl_Interp *interp, /* Interpreter for error reporting. If NULL
|
||
* then no messages are provided for
|
||
* errors. */
|
||
char *recordPtr, /* Record whose fields contain current values
|
||
* for options. */
|
||
Tk_OptionTable optionTable, /* Describes legal options. */
|
||
Tcl_Obj *namePtr, /* Gives the command-line name for the option
|
||
* whose value is to be returned. */
|
||
Tk_Window tkwin) /* Window corresponding to recordPtr. */
|
||
{
|
||
OptionTable *tablePtr = (OptionTable *) optionTable;
|
||
Option *optionPtr;
|
||
Tcl_Obj *resultPtr;
|
||
|
||
optionPtr = GetOptionFromObj(interp, namePtr, tablePtr);
|
||
if (optionPtr == NULL) {
|
||
return NULL;
|
||
}
|
||
if (optionPtr->specPtr->type == TK_OPTION_SYNONYM) {
|
||
optionPtr = optionPtr->extra.synonymPtr;
|
||
}
|
||
if (optionPtr->specPtr->objOffset >= 0) {
|
||
resultPtr = *((Tcl_Obj **) (recordPtr+optionPtr->specPtr->objOffset));
|
||
if (resultPtr == NULL) {
|
||
/*
|
||
* This option has a null value and is represented by a null
|
||
* object pointer. We can't return the null pointer, since that
|
||
* would indicate an error. Instead, return a new empty object.
|
||
*/
|
||
|
||
resultPtr = Tcl_NewObj();
|
||
}
|
||
} else {
|
||
resultPtr = GetObjectForOption(recordPtr, optionPtr, tkwin);
|
||
}
|
||
return resultPtr;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkDebugConfig --
|
||
*
|
||
* This is a debugging function that returns information about one of the
|
||
* configuration tables that currently exists for an interpreter.
|
||
*
|
||
* Results:
|
||
* If the specified table exists in the given interpreter, then a list is
|
||
* returned describing the table and any other tables that it chains to:
|
||
* for each table there will be three list elements giving the reference
|
||
* count for the table, the number of elements in the table, and the
|
||
* command-line name for the first option in the table. If the table
|
||
* doesn't exist in the interpreter then an empty object is returned.
|
||
* The reference count for the returned object is 0.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
Tcl_Obj *
|
||
TkDebugConfig(
|
||
Tcl_Interp *interp, /* Interpreter in which the table is
|
||
* defined. */
|
||
Tk_OptionTable table) /* Table about which information is to be
|
||
* returned. May not necessarily exist in the
|
||
* interpreter anymore. */
|
||
{
|
||
OptionTable *tablePtr = (OptionTable *) table;
|
||
Tcl_HashEntry *hashEntryPtr;
|
||
Tcl_HashSearch search;
|
||
Tcl_Obj *objPtr;
|
||
ThreadSpecificData *tsdPtr =
|
||
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
||
|
||
objPtr = Tcl_NewObj();
|
||
if (!tablePtr || !tsdPtr->initialized) {
|
||
return objPtr;
|
||
}
|
||
|
||
/*
|
||
* Scan all the tables for this interpreter to make sure that the one we
|
||
* want still is valid.
|
||
*/
|
||
|
||
for (hashEntryPtr = Tcl_FirstHashEntry(&tsdPtr->hashTable, &search);
|
||
hashEntryPtr != NULL;
|
||
hashEntryPtr = Tcl_NextHashEntry(&search)) {
|
||
if (tablePtr == (OptionTable *) Tcl_GetHashValue(hashEntryPtr)) {
|
||
for ( ; tablePtr != NULL; tablePtr = tablePtr->nextPtr) {
|
||
Tcl_ListObjAppendElement(NULL, objPtr,
|
||
Tcl_NewIntObj(tablePtr->refCount));
|
||
Tcl_ListObjAppendElement(NULL, objPtr,
|
||
Tcl_NewIntObj(tablePtr->numOptions));
|
||
Tcl_ListObjAppendElement(NULL, objPtr, Tcl_NewStringObj(
|
||
tablePtr->options[0].specPtr->optionName, -1));
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
return objPtr;
|
||
}
|
||
|
||
/*
|
||
* Local Variables:
|
||
* mode: c
|
||
* c-basic-offset: 4
|
||
* fill-column: 78
|
||
* End:
|
||
*/
|