diff options
Diffstat (limited to 'tk8.6/generic/tkConfig.c')
| -rw-r--r-- | tk8.6/generic/tkConfig.c | 2117 |
1 files changed, 0 insertions, 2117 deletions
diff --git a/tk8.6/generic/tkConfig.c b/tk8.6/generic/tkConfig.c deleted file mode 100644 index 9c159e6..0000000 --- a/tk8.6/generic/tkConfig.c +++ /dev/null @@ -1,2117 +0,0 @@ -/* - * tkConfig.c -- - * - * This file contains functions that manage configuration options for - * widgets and other things. - * - * Copyright (c) 1997-1998 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution of - * this file, and for a DISCLAIMER OF ALL WARRANTIES. - */ - -/* - * Temporary flag for working on new config package. - */ - -#if 0 - -/* - * used only for removing the old config code - */ - -#define __NO_OLD_CONFIG -#endif - -#include "tkInt.h" -#include "tkFont.h" - -/* - * The following definition keeps track of all of - * the option tables that have been created for a thread. - */ - -typedef struct ThreadSpecificData { - int initialized; /* 0 means table below needs initializing. */ - Tcl_HashTable hashTable; -} ThreadSpecificData; -static Tcl_ThreadDataKey dataKey; - - -/* - * The following two structures are used along with Tk_OptionSpec structures - * to manage configuration options. Tk_OptionSpec is static templates that are - * compiled into the code of a widget or other object manager. However, to - * look up options efficiently we need to supplement the static information - * with additional dynamic information, and this dynamic information may be - * different for each application. Thus we create structures of the following - * two types to hold all of the dynamic information; this is done by - * Tk_CreateOptionTable. - * - * One of the following structures corresponds to each Tk_OptionSpec. These - * structures exist as arrays inside TkOptionTable structures. - */ - -typedef struct TkOption { - const Tk_OptionSpec *specPtr; - /* The original spec from the template passed - * to Tk_CreateOptionTable.*/ - Tk_Uid dbNameUID; /* The Uid form of the option database - * name. */ - Tk_Uid dbClassUID; /* The Uid form of the option database class - * name. */ - Tcl_Obj *defaultPtr; /* Default value for this option. */ - union { - Tcl_Obj *monoColorPtr; /* For color and border options, this is an - * alternate default value to use on - * monochrome displays. */ - struct TkOption *synonymPtr; - /* For synonym options, this points to the - * master entry. */ - const struct Tk_ObjCustomOption *custom; - /* For TK_OPTION_CUSTOM. */ - } extra; - int flags; /* Miscellaneous flag values; see below for - * definitions. */ -} Option; - -/* - * Flag bits defined for Option structures: - * - * OPTION_NEEDS_FREEING - 1 means that FreeResources must be invoked to - * free resources associated with the option when - * it is no longer needed. - */ - -#define OPTION_NEEDS_FREEING 1 - -/* - * One of the following exists for each Tk_OptionSpec array that has been - * passed to Tk_CreateOptionTable. - */ - -typedef struct OptionTable { - int refCount; /* Counts the number of uses of this table - * (the number of times Tk_CreateOptionTable - * has returned it). This can be greater than - * 1 if it is shared along several option - * table chains, or if the same table is used - * for multiple purposes. */ - Tcl_HashEntry *hashEntryPtr;/* Hash table entry that refers to this table; - * used to delete the entry. */ - struct OptionTable *nextPtr;/* If templatePtr was part of a chain of - * templates, this points to the table - * corresponding to the next template in the - * chain. */ - int numOptions; /* The number of items in the options array - * below. */ - Option options[1]; /* Information about the individual options in - * the table. This must be the last field in - * the structure: the actual size of the array - * will be numOptions, not 1. */ -} OptionTable; - -/* - * Forward declarations for functions defined later in this file: - */ - -static int DoObjConfig(Tcl_Interp *interp, char *recordPtr, - Option *optionPtr, Tcl_Obj *valuePtr, - Tk_Window tkwin, Tk_SavedOption *savePtr); -static void FreeResources(Option *optionPtr, Tcl_Obj *objPtr, - char *internalPtr, Tk_Window tkwin); -static Tcl_Obj * GetConfigList(char *recordPtr, - Option *optionPtr, Tk_Window tkwin); -static Tcl_Obj * GetObjectForOption(char *recordPtr, - Option *optionPtr, Tk_Window tkwin); -static Option * GetOption(const char *name, OptionTable *tablePtr); -static Option * GetOptionFromObj(Tcl_Interp *interp, - Tcl_Obj *objPtr, OptionTable *tablePtr); -static int ObjectIsEmpty(Tcl_Obj *objPtr); -static void FreeOptionInternalRep(Tcl_Obj *objPtr); -static void DupOptionInternalRep(Tcl_Obj *, Tcl_Obj *); - -/* - * The structure below defines an object type that is used to cache the result - * of looking up an option name. If an object has this type, then its - * internalPtr1 field points to the OptionTable in which it was looked up, and - * the internalPtr2 field points to the entry that matched. - */ - -static const Tcl_ObjType optionObjType = { - "option", /* name */ - FreeOptionInternalRep, /* freeIntRepProc */ - DupOptionInternalRep, /* dupIntRepProc */ - NULL, /* updateStringProc */ - NULL /* setFromAnyProc */ -}; - -/* - *-------------------------------------------------------------- - * - * Tk_CreateOptionTable -- - * - * Given a template for configuration options, this function creates a - * table that may be used to look up options efficiently. - * - * Results: - * Returns a token to a structure that can be passed to functions such as - * Tk_InitOptions, Tk_SetOptions, and Tk_FreeConfigOptions. - * - * Side effects: - * Storage is allocated. - * - *-------------------------------------------------------------- - */ - -Tk_OptionTable -Tk_CreateOptionTable( - Tcl_Interp *interp, /* Interpreter associated with the application - * in which this table will be used. */ - const Tk_OptionSpec *templatePtr) - /* Static information about the configuration - * options. */ -{ - Tcl_HashEntry *hashEntryPtr; - int newEntry; - OptionTable *tablePtr; - const Tk_OptionSpec *specPtr, *specPtr2; - Option *optionPtr; - int numOptions, i; - ThreadSpecificData *tsdPtr = - Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); - - /* - * We use an TSD in the thread to keep a hash table of - * all the option tables we've created for this application. This is - * used for allowing us to share the tables (e.g. in several chains). - * The code below finds the hash table or creates a new one if it - * doesn't already exist. - */ - - if (!tsdPtr->initialized) { - Tcl_InitHashTable(&tsdPtr->hashTable, TCL_ONE_WORD_KEYS); - tsdPtr->initialized = 1; - } - - /* - * See if a table has already been created for this template. If so, just - * reuse the existing table. - */ - - hashEntryPtr = Tcl_CreateHashEntry(&tsdPtr->hashTable, (char *) templatePtr, - &newEntry); - if (!newEntry) { - tablePtr = Tcl_GetHashValue(hashEntryPtr); - tablePtr->refCount++; - return (Tk_OptionTable) tablePtr; - } - - /* - * Count the number of options in the template, then create the table - * structure. - */ - - numOptions = 0; - for (specPtr = templatePtr; specPtr->type != TK_OPTION_END; specPtr++) { - numOptions++; - } - tablePtr = ckalloc(sizeof(OptionTable) + (numOptions * sizeof(Option))); - tablePtr->refCount = 1; - tablePtr->hashEntryPtr = hashEntryPtr; - tablePtr->nextPtr = NULL; - tablePtr->numOptions = numOptions; - - /* - * Initialize all of the Option structures in the table. - */ - - for (specPtr = templatePtr, optionPtr = tablePtr->options; - specPtr->type != TK_OPTION_END; specPtr++, optionPtr++) { - optionPtr->specPtr = specPtr; - optionPtr->dbNameUID = NULL; - optionPtr->dbClassUID = NULL; - optionPtr->defaultPtr = NULL; - optionPtr->extra.monoColorPtr = NULL; - optionPtr->flags = 0; - - if (specPtr->type == TK_OPTION_SYNONYM) { - /* - * This is a synonym option; find the master option that it refers - * to and create a pointer from the synonym to the master. - */ - - for (specPtr2 = templatePtr, i = 0; ; specPtr2++, i++) { - if (specPtr2->type == TK_OPTION_END) { - Tcl_Panic("Tk_CreateOptionTable couldn't find synonym"); - } - if (strcmp(specPtr2->optionName, - (char *) specPtr->clientData) == 0) { - optionPtr->extra.synonymPtr = tablePtr->options + i; - break; - } - } - } else { - if (specPtr->dbName != NULL) { - optionPtr->dbNameUID = Tk_GetUid(specPtr->dbName); - } - if (specPtr->dbClass != NULL) { - optionPtr->dbClassUID = Tk_GetUid(specPtr->dbClass); - } - if (specPtr->defValue != NULL) { - optionPtr->defaultPtr = Tcl_NewStringObj(specPtr->defValue,-1); - Tcl_IncrRefCount(optionPtr->defaultPtr); - } - if (((specPtr->type == TK_OPTION_COLOR) - || (specPtr->type == TK_OPTION_BORDER)) - && (specPtr->clientData != NULL)) { - optionPtr->extra.monoColorPtr = - Tcl_NewStringObj(specPtr->clientData, -1); - Tcl_IncrRefCount(optionPtr->extra.monoColorPtr); - } - - if (specPtr->type == TK_OPTION_CUSTOM) { - /* - * Get the custom parsing, etc., functions. - */ - - optionPtr->extra.custom = specPtr->clientData; - } - } - if (((specPtr->type == TK_OPTION_STRING) - && (specPtr->internalOffset >= 0)) - || (specPtr->type == TK_OPTION_COLOR) - || (specPtr->type == TK_OPTION_FONT) - || (specPtr->type == TK_OPTION_BITMAP) - || (specPtr->type == TK_OPTION_BORDER) - || (specPtr->type == TK_OPTION_CURSOR) - || (specPtr->type == TK_OPTION_CUSTOM)) { - optionPtr->flags |= OPTION_NEEDS_FREEING; - } - } - tablePtr->hashEntryPtr = hashEntryPtr; - Tcl_SetHashValue(hashEntryPtr, tablePtr); - - /* - * Finally, check to see if this template chains to another template with - * additional options. If so, call ourselves recursively to create the - * next table(s). - */ - - if (specPtr->clientData != NULL) { - tablePtr->nextPtr = (OptionTable *) - Tk_CreateOptionTable(interp, specPtr->clientData); - } - - return (Tk_OptionTable) tablePtr; -} - -/* - *---------------------------------------------------------------------- - * - * Tk_DeleteOptionTable -- - * - * Called to release resources used by an option table when the table is - * no longer needed. - * - * Results: - * None. - * - * Side effects: - * The option table and associated resources (such as additional option - * tables chained off it) are destroyed. - * - *---------------------------------------------------------------------- - */ - -void -Tk_DeleteOptionTable( - Tk_OptionTable optionTable) /* The option table to delete. */ -{ - OptionTable *tablePtr = (OptionTable *) optionTable; - Option *optionPtr; - int count; - - tablePtr->refCount--; - if (tablePtr->refCount > 0) { - return; - } - - if (tablePtr->nextPtr != NULL) { - Tk_DeleteOptionTable((Tk_OptionTable) tablePtr->nextPtr); - } - - for (count = tablePtr->numOptions, optionPtr = tablePtr->options; - count > 0; count--, optionPtr++) { - if (optionPtr->defaultPtr != NULL) { - Tcl_DecrRefCount(optionPtr->defaultPtr); - } - 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 = None; - valuePtr = NULL; - } else { - newCursor = Tk_AllocCursorFromObj(interp, tkwin, valuePtr); - if (newCursor == None) { - 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 = None; - } 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. */ -{ - int length; - - if (objPtr == NULL) { - return 1; - } - if (objPtr->bytes != NULL) { - return (objPtr->length == 0); - } - (void)Tcl_GetStringFromObj(objPtr, &length); - return (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) != None) { - Tk_FreeCursor(Tk_Display(tkwin), *((Tk_Cursor *) internalPtr)); - *((Tk_Cursor *) internalPtr) = None; - } - } 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 != None) { - 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: - */ |