tcl.git - Tcl is a high-level, general-purpose, interpreted, dynamic programming language. It was designed with the goal of being very simple but powerful.

	Commit message (Collapse)	Author	Age	Files	Lines
*	Replaced SCCS strings, fixed binary filescore_8_0_3	stanton	1998-09-14	1	-1/+1
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*	Initial revision	rjohnson	1998-03-26	1	-0/+16

/* * tkTextTag.c -- * * This module implements the "tag" subcommand of the widget command for * text widgets, plus most of the other high-level functions related to * tags. * * Copyright (c) 1992-1994 The Regents of the University of California. * Copyright (c) 1994-1997 Sun Microsystems, Inc. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tkTextTag.c,v 1.34 2010/01/18 20:43:38 nijtmans Exp $ */ #include "default.h" #include "tkInt.h" #include "tkText.h" /* * The 'TkWrapMode' enum in tkText.h is used to define a type for the -wrap * option of tags in a Text widget. These values are used as indices into the * string table below. Tags are allowed an empty wrap value, but the widget as * a whole is not. */ static const char *const wrapStrings[] = { "char", "none", "word", "", NULL }; /* * The 'TkTextTabStyle' enum in tkText.h is used to define a type for the * -tabstyle option of the Text widget. These values are used as indices into * the string table below. Tags are allowed an empty wrap value, but the * widget as a whole is not. */ static const char *const tabStyleStrings[] = { "tabular", "wordprocessor", "", NULL }; static const Tk_OptionSpec tagOptionSpecs[] = { {TK_OPTION_BORDER, "-background", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, border), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_BITMAP, "-bgstipple", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, bgStipple), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_PIXELS, "-borderwidth", NULL, NULL, "0", Tk_Offset(TkTextTag, borderWidthPtr), Tk_Offset(TkTextTag, borderWidth), TK_OPTION_DONT_SET_DEFAULT|TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-elide", NULL, NULL, "0", -1, Tk_Offset(TkTextTag, elideString), TK_OPTION_DONT_SET_DEFAULT|TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_BITMAP, "-fgstipple", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, fgStipple), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_FONT, "-font", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, tkfont), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_COLOR, "-foreground", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, fgColor), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-justify", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, justifyString), TK_OPTION_NULL_OK, 0,0}, {TK_OPTION_STRING, "-lmargin1", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, lMargin1String), TK_OPTION_NULL_OK,0,0}, {TK_OPTION_STRING, "-lmargin2", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, lMargin2String), TK_OPTION_NULL_OK,0,0}, {TK_OPTION_STRING, "-offset", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, offsetString), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-overstrike", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, overstrikeString), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-relief", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, reliefString), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-rmargin", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, rMarginString), TK_OPTION_NULL_OK, 0,0}, {TK_OPTION_STRING, "-spacing1", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, spacing1String), TK_OPTION_NULL_OK,0,0}, {TK_OPTION_STRING, "-spacing2", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, spacing2String), TK_OPTION_NULL_OK,0,0}, {TK_OPTION_STRING, "-spacing3", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, spacing3String), TK_OPTION_NULL_OK,0,0}, {TK_OPTION_STRING, "-tabs", NULL, NULL, NULL, Tk_Offset(TkTextTag, tabStringPtr), -1, TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING_TABLE, "-tabstyle", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, tabStyle), TK_OPTION_NULL_OK, (ClientData) tabStyleStrings, 0}, {TK_OPTION_STRING, "-underline", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, underlineString), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING_TABLE, "-wrap", NULL, NULL, NULL, -1, Tk_Offset(TkTextTag, wrapMode), TK_OPTION_NULL_OK, (ClientData) wrapStrings, 0}, {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, 0, 0, 0, 0} }; /* * Forward declarations for functions defined later in this file: */ static void ChangeTagPriority(TkText *textPtr, TkTextTag *tagPtr, int prio); static TkTextTag * FindTag(Tcl_Interp *interp, TkText *textPtr, Tcl_Obj *tagName); static void SortTags(int numTags, TkTextTag **tagArrayPtr); static int TagSortProc(const void *first, const void *second); static void TagBindEvent(TkText *textPtr, XEvent *eventPtr, int numTags, TkTextTag **tagArrayPtr); /* *-------------------------------------------------------------- * * TkTextTagCmd -- * * This function is invoked to process the "tag" options of the widget * command for text widgets. See the user documentation for details on * what it does. * * Results: * A standard Tcl result. * * Side effects: * See the user documentation. * *-------------------------------------------------------------- */ int TkTextTagCmd( register TkText *textPtr, /* Information about text widget. */ Tcl_Interp *interp, /* Current interpreter. */ int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. Someone else has already * parsed this command enough to know that * objv[1] is "tag". */ { static const char *const tagOptionStrings[] = { "add", "bind", "cget", "configure", "delete", "lower", "names", "nextrange", "prevrange", "raise", "ranges", "remove", NULL }; enum tagOptions { TAG_ADD, TAG_BIND, TAG_CGET, TAG_CONFIGURE, TAG_DELETE, TAG_LOWER, TAG_NAMES, TAG_NEXTRANGE, TAG_PREVRANGE, TAG_RAISE, TAG_RANGES, TAG_REMOVE }; int optionIndex, i; register TkTextTag *tagPtr; TkTextIndex index1, index2; if (objc < 3) { Tcl_WrongNumArgs(interp, 2, objv, "option ?arg ...?"); return TCL_ERROR; } if (Tcl_GetIndexFromObj(interp, objv[2], tagOptionStrings, "tag option", 0, &optionIndex) != TCL_OK) { return TCL_ERROR; } switch ((enum tagOptions)optionIndex) { case TAG_ADD: case TAG_REMOVE: { int addTag; if (((enum tagOptions)optionIndex) == TAG_ADD) { addTag = 1; } else { addTag = 0; } if (objc < 5) { Tcl_WrongNumArgs(interp, 3, objv, "tagName index1 ?index2 index1 index2 ...?"); return TCL_ERROR; } tagPtr = TkTextCreateTag(textPtr, Tcl_GetString(objv[3]), NULL); for (i = 4; i < objc; i += 2) { if (TkTextGetObjIndex(interp, textPtr, objv[i], &index1) != TCL_OK) { return TCL_ERROR; } if (objc > (i+1)) { if (TkTextGetObjIndex(interp, textPtr, objv[i+1], &index2) != TCL_OK) { return TCL_ERROR; } if (TkTextIndexCmp(&index1, &index2) >= 0) { return TCL_OK; } } else { index2 = index1; TkTextIndexForwChars(NULL,&index2, 1, &index2, COUNT_INDICES); } if (tagPtr->affectsDisplay) { TkTextRedrawTag(textPtr->sharedTextPtr, NULL, &index1, &index2, tagPtr, !addTag); } else { /* * Still need to trigger enter/leave events on tags that have * changed. */ TkTextEventuallyRepick(textPtr); } if (TkBTreeTag(&index1, &index2, tagPtr, addTag)) { /* * If the tag is "sel", and we actually adjusted something * then grab the selection if we're supposed to export it and * don't already have it. * * Also, invalidate partially-completed selection retrievals. * We only need to check whether the tag is "sel" for this * textPtr (not for other peer widget's "sel" tags) because we * cannot reach this code path with a different widget's "sel" * tag. */ if (tagPtr == textPtr->selTagPtr) { /* * Send an event that the selection changed. This is * equivalent to: * event generate $textWidget <<Selection>> */ TkTextSelectionEvent(textPtr); if (addTag && textPtr->exportSelection && !(textPtr->flags & GOT_SELECTION)) { Tk_OwnSelection(textPtr->tkwin, XA_PRIMARY, TkTextLostSelection, textPtr); textPtr->flags |= GOT_SELECTION; } textPtr->abortSelections = 1; } } } break; } case TAG_BIND: if ((objc < 4) || (objc > 6)) { Tcl_WrongNumArgs(interp, 3, objv, "tagName ?sequence? ?command?"); return TCL_ERROR; } tagPtr = TkTextCreateTag(textPtr, Tcl_GetString(objv[3]), NULL); /* * Make a binding table if the widget doesn't already have one. */ if (textPtr->sharedTextPtr->bindingTable == NULL) { textPtr->sharedTextPtr->bindingTable = Tk_CreateBindingTable(interp); } if (objc == 6) { int append = 0; unsigned long mask; const char *fifth = Tcl_GetString(objv[5]); if (fifth[0] == 0) { return Tk_DeleteBinding(interp, textPtr->sharedTextPtr->bindingTable, (ClientData) tagPtr->name, Tcl_GetString(objv[4])); } if (fifth[0] == '+') { fifth++; append = 1; } mask = Tk_CreateBinding(interp, textPtr->sharedTextPtr->bindingTable, (ClientData) tagPtr->name, Tcl_GetString(objv[4]), fifth, append); if (mask == 0) { return TCL_ERROR; } if (mask & (unsigned) ~(ButtonMotionMask|Button1MotionMask |Button2MotionMask|Button3MotionMask|Button4MotionMask |Button5MotionMask|ButtonPressMask|ButtonReleaseMask |EnterWindowMask|LeaveWindowMask|KeyPressMask |KeyReleaseMask|PointerMotionMask|VirtualEventMask)) { Tk_DeleteBinding(interp, textPtr->sharedTextPtr->bindingTable, (ClientData) tagPtr->name, Tcl_GetString(objv[4])); Tcl_ResetResult(interp); Tcl_AppendResult(interp, "requested illegal events; ", "only key, button, motion, enter, leave, and virtual ", "events may be used", NULL); return TCL_ERROR; } } else if (objc == 5) { const char *command; command = Tk_GetBinding(interp, textPtr->sharedTextPtr->bindingTable, (ClientData) tagPtr->name, Tcl_GetString(objv[4])); if (command == NULL) { const char *string = Tcl_GetStringResult(interp); /* * Ignore missing binding errors. This is a special hack that * relies on the error message returned by FindSequence in * tkBind.c. */ if (string[0] != '\0') { return TCL_ERROR; } Tcl_ResetResult(interp); } else { Tcl_SetResult(interp, (char *) command, TCL_STATIC); } } else { Tk_GetAllBindings(interp, textPtr->sharedTextPtr->bindingTable, (ClientData) tagPtr->name); } break; case TAG_CGET: if (objc != 5) { Tcl_WrongNumArgs(interp, 1, objv, "tag cget tagName option"); return TCL_ERROR; } else { Tcl_Obj *objPtr; tagPtr = FindTag(interp, textPtr, objv[3]); if (tagPtr == NULL) { return TCL_ERROR; } objPtr = Tk_GetOptionValue(interp, (char *) tagPtr, tagPtr->optionTable, objv[4], textPtr->tkwin); if (objPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, objPtr); return TCL_OK; } break; case TAG_CONFIGURE: { int newTag; if (objc < 4) { Tcl_WrongNumArgs(interp, 3, objv, "tagName ?-option? ?value? ?-option value ...?"); return TCL_ERROR; } tagPtr = TkTextCreateTag(textPtr, Tcl_GetString(objv[3]), &newTag); if (objc <= 5) { Tcl_Obj *objPtr = Tk_GetOptionInfo(interp, (char *) tagPtr, tagPtr->optionTable, (objc == 5) ? objv[4] : NULL, textPtr->tkwin); if (objPtr == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, objPtr); return TCL_OK; } else { int result = TCL_OK; if (Tk_SetOptions(interp, (char *) tagPtr, tagPtr->optionTable, objc-4, objv+4, textPtr->tkwin, NULL, NULL) != TCL_OK) { return TCL_ERROR; } /* * Some of the configuration options, like -underline and * -justify, require additional translation (this is needed * because we need to distinguish a particular value of an option * from "unspecified"). */ if (tagPtr->borderWidth < 0) { tagPtr->borderWidth = 0; } if (tagPtr->reliefString != NULL) { if (Tk_GetRelief(interp, tagPtr->reliefString, &tagPtr->relief) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->justifyString != NULL) { if (Tk_GetJustify(interp, tagPtr->justifyString, &tagPtr->justify) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->lMargin1String != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->lMargin1String, &tagPtr->lMargin1) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->lMargin2String != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->lMargin2String, &tagPtr->lMargin2) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->offsetString != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->offsetString, &tagPtr->offset) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->overstrikeString != NULL) { if (Tcl_GetBoolean(interp, tagPtr->overstrikeString, &tagPtr->overstrike) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->rMarginString != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->rMarginString, &tagPtr->rMargin) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->spacing1String != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->spacing1String, &tagPtr->spacing1) != TCL_OK) { return TCL_ERROR; } if (tagPtr->spacing1 < 0) { tagPtr->spacing1 = 0; } } if (tagPtr->spacing2String != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->spacing2String, &tagPtr->spacing2) != TCL_OK) { return TCL_ERROR; } if (tagPtr->spacing2 < 0) { tagPtr->spacing2 = 0; } } if (tagPtr->spacing3String != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->spacing3String, &tagPtr->spacing3) != TCL_OK) { return TCL_ERROR; } if (tagPtr->spacing3 < 0) { tagPtr->spacing3 = 0; } } if (tagPtr->tabArrayPtr != NULL) { ckfree(tagPtr->tabArrayPtr); tagPtr->tabArrayPtr = NULL; } if (tagPtr->tabStringPtr != NULL) { tagPtr->tabArrayPtr = TkTextGetTabs(interp, textPtr, tagPtr->tabStringPtr); if (tagPtr->tabArrayPtr == NULL) { return TCL_ERROR; } } if (tagPtr->underlineString != NULL) { if (Tcl_GetBoolean(interp, tagPtr->underlineString, &tagPtr->underline) != TCL_OK) { return TCL_ERROR; } } if (tagPtr->elideString != NULL) { if (Tcl_GetBoolean(interp, tagPtr->elideString, &tagPtr->elide) != TCL_OK) { return TCL_ERROR; } } /* * If the "sel" tag was changed, be sure to mirror information * from the tag back into the text widget record. NOTE: we don't * have to free up information in the widget record before * overwriting it, because it was mirrored in the tag and hence * freed when the tag field was overwritten. */ if (tagPtr == textPtr->selTagPtr) { textPtr->selBorder = tagPtr->border; textPtr->selBorderWidth = tagPtr->borderWidth; textPtr->selBorderWidthPtr = tagPtr->borderWidthPtr; textPtr->selFgColorPtr = tagPtr->fgColor; } tagPtr->affectsDisplay = 0; tagPtr->affectsDisplayGeometry = 0; if ((tagPtr->elideString != NULL) || (tagPtr->tkfont != None) || (tagPtr->justifyString != NULL) || (tagPtr->lMargin1String != NULL) || (tagPtr->lMargin2String != NULL) || (tagPtr->offsetString != NULL) || (tagPtr->rMarginString != NULL) || (tagPtr->spacing1String != NULL) || (tagPtr->spacing2String != NULL) || (tagPtr->spacing3String != NULL) || (tagPtr->tabStringPtr != NULL) || (tagPtr->tabStyle != TK_TEXT_TABSTYLE_NONE) || (tagPtr->wrapMode != TEXT_WRAPMODE_NULL)) { tagPtr->affectsDisplay = 1; tagPtr->affectsDisplayGeometry = 1; } if ((tagPtr->border != NULL) || (tagPtr->reliefString != NULL) || (tagPtr->bgStipple != None) || (tagPtr->fgColor != NULL) || (tagPtr->fgStipple != None) || (tagPtr->overstrikeString != NULL) || (tagPtr->underlineString != NULL)) { tagPtr->affectsDisplay = 1; } if (!newTag) { /* * This line is not necessary if this is a new tag, since it * can't possibly have been applied to anything yet. */ /* * VMD: If this is the 'sel' tag, then we don't need to call * this for all peers, unless we actually want to synchronize * sel-style changes across the peers. */ TkTextRedrawTag(textPtr->sharedTextPtr, NULL, NULL, NULL, tagPtr, 1); } return result; } break; } case TAG_DELETE: { Tcl_HashEntry *hPtr; if (objc < 4) { Tcl_WrongNumArgs(interp, 3, objv, "tagName ?tagName ...?"); return TCL_ERROR; } for (i = 3; i < objc; i++) { hPtr = Tcl_FindHashEntry(&textPtr->sharedTextPtr->tagTable, Tcl_GetString(objv[i])); if (hPtr == NULL) { /* * Either this tag doesn't exist or it's the 'sel' tag (which * is not in the hash table). Either way we don't want to * delete it. */ continue; } tagPtr = Tcl_GetHashValue(hPtr); if (tagPtr == textPtr->selTagPtr) { continue; } if (tagPtr->affectsDisplay) { TkTextRedrawTag(textPtr->sharedTextPtr, NULL, NULL, NULL, tagPtr, 1); } TkTextDeleteTag(textPtr, tagPtr); Tcl_DeleteHashEntry(hPtr); } break; } case TAG_LOWER: { TkTextTag *tagPtr2; int prio; if ((objc != 4) && (objc != 5)) { Tcl_WrongNumArgs(interp, 3, objv, "tagName ?belowThis?"); return TCL_ERROR; } tagPtr = FindTag(interp, textPtr, objv[3]); if (tagPtr == NULL) { return TCL_ERROR; } if (objc == 5) { tagPtr2 = FindTag(interp, textPtr, objv[4]); if (tagPtr2 == NULL) { return TCL_ERROR; } if (tagPtr->priority < tagPtr2->priority) { prio = tagPtr2->priority - 1; } else { prio = tagPtr2->priority; } } else { prio = 0; } ChangeTagPriority(textPtr, tagPtr, prio); /* * If this is the 'sel' tag, then we don't actually need to call this * for all peers. */ TkTextRedrawTag(textPtr->sharedTextPtr, NULL, NULL, NULL, tagPtr, 1); break; } case TAG_NAMES: { TkTextTag **arrayPtr; int arraySize; Tcl_Obj *listObj; if ((objc != 3) && (objc != 4)) { Tcl_WrongNumArgs(interp, 3, objv, "?index?"); return TCL_ERROR; } if (objc == 3) { Tcl_HashSearch search; Tcl_HashEntry *hPtr; arrayPtr = ckalloc(textPtr->sharedTextPtr->numTags * sizeof(TkTextTag *)); for (i=0, hPtr = Tcl_FirstHashEntry( &textPtr->sharedTextPtr->tagTable, &search); hPtr != NULL; i++, hPtr = Tcl_NextHashEntry(&search)) { arrayPtr[i] = Tcl_GetHashValue(hPtr); } /* * The 'sel' tag is not in the hash table. */ arrayPtr[i] = textPtr->selTagPtr; arraySize = ++i; } else { if (TkTextGetObjIndex(interp, textPtr, objv[3], &index1) != TCL_OK) { return TCL_ERROR; } arrayPtr = TkBTreeGetTags(&index1, textPtr, &arraySize); if (arrayPtr == NULL) { return TCL_OK; } } SortTags(arraySize, arrayPtr); listObj = Tcl_NewListObj(0, NULL); for (i = 0; i < arraySize; i++) { tagPtr = arrayPtr[i]; Tcl_ListObjAppendElement(interp, listObj, Tcl_NewStringObj(tagPtr->name,-1)); } Tcl_SetObjResult(interp, listObj); ckfree(arrayPtr); break; } case TAG_NEXTRANGE: { TkTextIndex last; TkTextSearch tSearch; char position[TK_POS_CHARS]; if ((objc != 5) && (objc != 6)) { Tcl_WrongNumArgs(interp, 3, objv, "tagName index1 ?index2?"); return TCL_ERROR; } tagPtr = FindTag(NULL, textPtr, objv[3]); if (tagPtr == NULL) { return TCL_OK; } if (TkTextGetObjIndex(interp, textPtr, objv[4], &index1) != TCL_OK) { return TCL_ERROR; } TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, TkBTreeNumLines(textPtr->sharedTextPtr->tree, textPtr), 0, &last); if (objc == 5) { index2 = last; } else if (TkTextGetObjIndex(interp, textPtr, objv[5], &index2) != TCL_OK) { return TCL_ERROR; } /* * The search below is a bit tricky. Rather than use the B-tree * facilities to stop the search at index2, let it search up until the * end of the file but check for a position past index2 ourselves. * The reason for doing it this way is that we only care whether the * *start* of the range is before index2; once we find the start, we * don't want TkBTreeNextTag to abort the search because the end of * the range is after index2. */ TkBTreeStartSearch(&index1, &last, tagPtr, &tSearch); if (TkBTreeCharTagged(&index1, tagPtr)) { TkTextSegment *segPtr; int offset; /* * The first character is tagged. See if there is an on-toggle * just before the character. If not, then skip to the end of this * tagged range. */ for (segPtr = index1.linePtr->segPtr, offset = index1.byteIndex; offset >= 0; offset -= segPtr->size, segPtr = segPtr->nextPtr) { if ((offset == 0) && (segPtr->typePtr == &tkTextToggleOnType) && (segPtr->body.toggle.tagPtr == tagPtr)) { goto gotStart; } } if (!TkBTreeNextTag(&tSearch)) { return TCL_OK; } } /* * Find the start of the tagged range. */ if (!TkBTreeNextTag(&tSearch)) { return TCL_OK; } gotStart: if (TkTextIndexCmp(&tSearch.curIndex, &index2) >= 0) { return TCL_OK; } TkTextPrintIndex(textPtr, &tSearch.curIndex, position); Tcl_AppendElement(interp, position); TkBTreeNextTag(&tSearch); TkTextPrintIndex(textPtr, &tSearch.curIndex, position); Tcl_AppendElement(interp, position); break; } case TAG_PREVRANGE: { TkTextIndex last; TkTextSearch tSearch; char position1[TK_POS_CHARS]; char position2[TK_POS_CHARS]; if ((objc != 5) && (objc != 6)) { Tcl_WrongNumArgs(interp, 3, objv, "tagName index1 ?index2?"); return TCL_ERROR; } tagPtr = FindTag(NULL, textPtr, objv[3]); if (tagPtr == NULL) { return TCL_OK; } if (TkTextGetObjIndex(interp, textPtr, objv[4], &index1) != TCL_OK) { return TCL_ERROR; } if (objc == 5) { TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, 0, 0, &index2); } else if (TkTextGetObjIndex(interp, textPtr, objv[5], &index2) != TCL_OK) { return TCL_ERROR; } /* * The search below is a bit weird. The previous toggle can be either * an on or off toggle. If it is an on toggle, then we need to turn * around and search forward for the end toggle. Otherwise we keep * searching backwards. */ TkBTreeStartSearchBack(&index1, &index2, tagPtr, &tSearch); if (!TkBTreePrevTag(&tSearch)) { /* * Special case, there may be a tag off toggle at index1, and a * tag on toggle before the start of a partial peer widget. In * this case we missed it. */ if (textPtr->start != NULL && (textPtr->start == index2.linePtr) && (index2.byteIndex == 0) && TkBTreeCharTagged(&index2, tagPtr) && (TkTextIndexCmp(&index2, &index1) < 0)) { /* * The first character is tagged, so just add the range from * the first char to the start of the range. */ TkTextPrintIndex(textPtr, &index2, position1); TkTextPrintIndex(textPtr, &index1, position2); Tcl_AppendElement(interp, position1); Tcl_AppendElement(interp, position2); } return TCL_OK; } if (tSearch.segPtr->typePtr == &tkTextToggleOnType) { TkTextPrintIndex(textPtr, &tSearch.curIndex, position1); if (textPtr->start != NULL) { /* * Make sure the first index is not before the first allowed * text index in this widget. */ TkTextIndex firstIndex; firstIndex.linePtr = textPtr->start; firstIndex.byteIndex = 0; firstIndex.textPtr = NULL; if (TkTextIndexCmp(&tSearch.curIndex, &firstIndex) < 0) { if (TkTextIndexCmp(&firstIndex, &index1) >= 0) { /* * But now the new first index is actually too far * along in the text, so nothing is returned. */ return TCL_OK; } TkTextPrintIndex(textPtr, &firstIndex, position1); } } TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, TkBTreeNumLines(textPtr->sharedTextPtr->tree, textPtr), 0, &last); TkBTreeStartSearch(&tSearch.curIndex, &last, tagPtr, &tSearch); TkBTreeNextTag(&tSearch); TkTextPrintIndex(textPtr, &tSearch.curIndex, position2); } else { TkTextPrintIndex(textPtr, &tSearch.curIndex, position2); TkBTreePrevTag(&tSearch); TkTextPrintIndex(textPtr, &tSearch.curIndex, position1); if (TkTextIndexCmp(&tSearch.curIndex, &index2) < 0) { if (textPtr->start != NULL && index2.linePtr == textPtr->start && index2.byteIndex == 0) { /* It's ok */ TkTextPrintIndex(textPtr, &index2, position1); } else { return TCL_OK; } } } Tcl_AppendElement(interp, position1); Tcl_AppendElement(interp, position2); break; } case TAG_RAISE: { TkTextTag *tagPtr2; int prio; if ((objc != 4) && (objc != 5)) { Tcl_WrongNumArgs(interp, 3, objv, "tagName ?aboveThis?"); return TCL_ERROR; } tagPtr = FindTag(interp, textPtr, objv[3]); if (tagPtr == NULL) { return TCL_ERROR; } if (objc == 5) { tagPtr2 = FindTag(interp, textPtr, objv[4]); if (tagPtr2 == NULL) { return TCL_ERROR; } if (tagPtr->priority <= tagPtr2->priority) { prio = tagPtr2->priority; } else { prio = tagPtr2->priority + 1; } } else { prio = textPtr->sharedTextPtr->numTags-1; } ChangeTagPriority(textPtr, tagPtr, prio); /* * If this is the 'sel' tag, then we don't actually need to call this * for all peers. */ TkTextRedrawTag(textPtr->sharedTextPtr, NULL, NULL, NULL, tagPtr, 1); break; } case TAG_RANGES: { TkTextIndex first, last; TkTextSearch tSearch; Tcl_Obj *listObj = Tcl_NewListObj(0, NULL); int count = 0; if (objc != 4) { Tcl_WrongNumArgs(interp, 3, objv, "tagName"); return TCL_ERROR; } tagPtr = FindTag(NULL, textPtr, objv[3]); if (tagPtr == NULL) { return TCL_OK; } TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, 0, 0, &first); TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, TkBTreeNumLines(textPtr->sharedTextPtr->tree, textPtr), 0, &last); TkBTreeStartSearch(&first, &last, tagPtr, &tSearch); if (TkBTreeCharTagged(&first, tagPtr)) { Tcl_ListObjAppendElement(interp, listObj, TkTextNewIndexObj(textPtr, &first)); count++; } while (TkBTreeNextTag(&tSearch)) { Tcl_ListObjAppendElement(interp, listObj, TkTextNewIndexObj(textPtr, &tSearch.curIndex)); count++; } if (count % 2 == 1) { /* * If a text widget uses '-end', it won't necessarily run to the * end of the B-tree, and therefore the tag range might not be * closed. In this case we add the end of the range. */ Tcl_ListObjAppendElement(interp, listObj, TkTextNewIndexObj(textPtr, &last)); } Tcl_SetObjResult(interp, listObj); break; } } return TCL_OK; } /* *---------------------------------------------------------------------- * * TkTextCreateTag -- * * Find the record describing a tag within a given text widget, creating * a new record if one doesn't already exist. * * Results: * The return value is a pointer to the TkTextTag record for tagName. * * Side effects: * A new tag record is created if there isn't one already defined for * tagName. * *---------------------------------------------------------------------- */ TkTextTag * TkTextCreateTag( TkText *textPtr, /* Widget in which tag is being used. */ const char *tagName, /* Name of desired tag. */ int *newTag) /* If non-NULL, then return 1 if new, or 0 if * already exists. */ { register TkTextTag *tagPtr; Tcl_HashEntry *hPtr = NULL; int isNew; const char *name; if (!strcmp(tagName, "sel")) { if (textPtr->selTagPtr != NULL) { if (newTag != NULL) { *newTag = 0; } return textPtr->selTagPtr; } if (newTag != NULL) { *newTag = 1; } name = "sel"; } else { hPtr = Tcl_CreateHashEntry(&textPtr->sharedTextPtr->tagTable, tagName, &isNew); if (newTag != NULL) { *newTag = isNew; } if (!isNew) { return Tcl_GetHashValue(hPtr); } name = Tcl_GetHashKey(&textPtr->sharedTextPtr->tagTable, hPtr); } /* * No existing entry. Create a new one, initialize it, and add a pointer * to it to the hash table entry. */ tagPtr = ckalloc(sizeof(TkTextTag)); tagPtr->name = name; tagPtr->textPtr = NULL; tagPtr->toggleCount = 0; tagPtr->tagRootPtr = NULL; tagPtr->priority = textPtr->sharedTextPtr->numTags; tagPtr->border = NULL; tagPtr->borderWidth = 0; tagPtr->borderWidthPtr = NULL; tagPtr->reliefString = NULL; tagPtr->relief = TK_RELIEF_FLAT; tagPtr->bgStipple = None; tagPtr->fgColor = NULL; tagPtr->tkfont = NULL; tagPtr->fgStipple = None; tagPtr->justifyString = NULL; tagPtr->justify = TK_JUSTIFY_LEFT; tagPtr->lMargin1String = NULL; tagPtr->lMargin1 = 0; tagPtr->lMargin2String = NULL; tagPtr->lMargin2 = 0; tagPtr->offsetString = NULL; tagPtr->offset = 0; tagPtr->overstrikeString = NULL; tagPtr->overstrike = 0; tagPtr->rMarginString = NULL; tagPtr->rMargin = 0; tagPtr->spacing1String = NULL; tagPtr->spacing1 = 0; tagPtr->spacing2String = NULL; tagPtr->spacing2 = 0; tagPtr->spacing3String = NULL; tagPtr->spacing3 = 0; tagPtr->tabStringPtr = NULL; tagPtr->tabArrayPtr = NULL; tagPtr->tabStyle = TK_TEXT_TABSTYLE_NONE; tagPtr->underlineString = NULL; tagPtr->underline = 0; tagPtr->elideString = NULL; tagPtr->elide = 0; tagPtr->wrapMode = TEXT_WRAPMODE_NULL; tagPtr->affectsDisplay = 0; tagPtr->affectsDisplayGeometry = 0; textPtr->sharedTextPtr->numTags++; if (!strcmp(tagName, "sel")) { tagPtr->textPtr = textPtr; textPtr->refCount++; } else { CLANG_ASSERT(hPtr); Tcl_SetHashValue(hPtr, tagPtr); } tagPtr->optionTable = Tk_CreateOptionTable(textPtr->interp, tagOptionSpecs); return tagPtr; } /* *---------------------------------------------------------------------- * * FindTag -- * * See if tag is defined for a given widget. * * Results: * If tagName is defined in textPtr, a pointer to its TkTextTag structure * is returned. Otherwise NULL is returned and an error message is * recorded in the interp's result unless interp is NULL. * * Side effects: * None. * *---------------------------------------------------------------------- */ static TkTextTag * FindTag( Tcl_Interp *interp, /* Interpreter to use for error message; if * NULL, then don't record an error * message. */ TkText *textPtr, /* Widget in which tag is being used. */ Tcl_Obj *tagName) /* Name of desired tag. */ { Tcl_HashEntry *hPtr; int len; const char *str; str = Tcl_GetStringFromObj(tagName, &len); if (len == 3 && !strcmp(str,"sel")) { return textPtr->selTagPtr; } hPtr = Tcl_FindHashEntry(&textPtr->sharedTextPtr->tagTable, Tcl_GetString(tagName)); if (hPtr != NULL) { return Tcl_GetHashValue(hPtr); } if (interp != NULL) { Tcl_AppendResult(interp, "tag \"", Tcl_GetString(tagName), "\" isn't defined in text widget", NULL); } return NULL; } /* *---------------------------------------------------------------------- * * TkTextDeleteTag -- * * This function is called to carry out most actions associated with the * 'tag delete' sub-command. It will remove all evidence of the tag from * the B-tree, and then call TkTextFreeTag to clean up the tag structure * itself. * * The only actions this doesn't carry out it to check if the deletion of * the tag requires something to be re-displayed, and to remove the tag * from the tagTable (hash table) if that is necessary (i.e. if it's not * the 'sel' tag). It is expected that the caller carry out both of these * actions. * * Results: * None. * * Side effects: * Memory and other resources are freed, the B-tree is manipulated. * *---------------------------------------------------------------------- */ void TkTextDeleteTag( TkText *textPtr, /* Info about overall widget. */ register TkTextTag *tagPtr) /* Tag being deleted. */ { TkTextIndex first, last; TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, 0, 0, &first); TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, TkBTreeNumLines(textPtr->sharedTextPtr->tree, textPtr), 0, &last), TkBTreeTag(&first, &last, tagPtr, 0); if (tagPtr == textPtr->selTagPtr) { /* * Send an event that the selection changed. This is equivalent to: * event generate $textWidget <<Selection>> */ TkTextSelectionEvent(textPtr); } else { /* * Since all peer widgets have an independent "sel" tag, we * don't want removal of one sel tag to remove bindings which * are still valid in other peer widgets. */ if (textPtr->sharedTextPtr->bindingTable != NULL) { Tk_DeleteAllBindings(textPtr->sharedTextPtr->bindingTable, (ClientData) tagPtr->name); } } /* * Update the tag priorities to reflect the deletion of this tag. */ ChangeTagPriority(textPtr, tagPtr, textPtr->sharedTextPtr->numTags-1); textPtr->sharedTextPtr->numTags -= 1; TkTextFreeTag(textPtr, tagPtr); } /* *---------------------------------------------------------------------- * * TkTextFreeTag -- * * This function is called when a tag is deleted to free up the memory * and other resources associated with the tag. * * Results: * None. * * Side effects: * Memory and other resources are freed. * *---------------------------------------------------------------------- */ void TkTextFreeTag( TkText *textPtr, /* Info about overall widget. */ register TkTextTag *tagPtr) /* Tag being deleted. */ { int i; /* * Let Tk do most of the hard work for us. */ Tk_FreeConfigOptions((char *) tagPtr, tagPtr->optionTable, textPtr->tkwin); /* * This associated information is managed by us. */ if (tagPtr->tabArrayPtr != NULL) { ckfree(tagPtr->tabArrayPtr); } /* * Make sure this tag isn't referenced from the 'current' tag array. */ for (i = 0; i < textPtr->numCurTags; i++) { if (textPtr->curTagArrayPtr[i] == tagPtr) { for (; i < textPtr->numCurTags-1; i++) { textPtr->curTagArrayPtr[i] = textPtr->curTagArrayPtr[i+1]; } textPtr->curTagArrayPtr[textPtr->numCurTags-1] = NULL; textPtr->numCurTags--; break; } } /* * If this tag is widget-specific (peer widgets) then clean up the * refCount it holds. */ if (tagPtr->textPtr != NULL) { if (textPtr != tagPtr->textPtr) { Tcl_Panic("Tag being deleted from wrong widget"); } textPtr->refCount--; if (textPtr->refCount == 0) { ckfree(textPtr); } tagPtr->textPtr = NULL; } /* * Finally free the tag's memory. */ ckfree(tagPtr); } /* *---------------------------------------------------------------------- * * SortTags -- * * This function sorts an array of tag pointers in increasing order of * priority, optimizing for the common case where the array is small. * * Results: * None. * * Side effects: * None. * *---------------------------------------------------------------------- */ static void SortTags( int numTags, /* Number of tag pointers at *tagArrayPtr. */ TkTextTag **tagArrayPtr) /* Pointer to array of pointers. */ { int i, j, prio; register TkTextTag **tagPtrPtr; TkTextTag **maxPtrPtr, *tmp; if (numTags < 2) { return; } if (numTags < 20) { for (i = numTags-1; i > 0; i--, tagArrayPtr++) { maxPtrPtr = tagPtrPtr = tagArrayPtr; prio = tagPtrPtr[0]->priority; for (j = i, tagPtrPtr++; j > 0; j--, tagPtrPtr++) { if (tagPtrPtr[0]->priority < prio) { prio = tagPtrPtr[0]->priority; maxPtrPtr = tagPtrPtr; } } tmp = *maxPtrPtr; *maxPtrPtr = *tagArrayPtr; *tagArrayPtr = tmp; } } else { qsort(tagArrayPtr,(unsigned)numTags,sizeof(TkTextTag *),TagSortProc); } } /* *---------------------------------------------------------------------- * * TagSortProc -- * * This function is called by qsort() when sorting an array of tags in * priority order. * * Results: * The return value is -1 if the first argument should be before the * second element (i.e. it has lower priority), 0 if it's equivalent * (this should never happen!), and 1 if it should be after the second * element. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TagSortProc( const void *first, const void *second) /* Elements to be compared. */ { TkTextTag *tagPtr1, *tagPtr2; tagPtr1 = * (TkTextTag **) first; tagPtr2 = * (TkTextTag **) second; return tagPtr1->priority - tagPtr2->priority; } /* *---------------------------------------------------------------------- * * ChangeTagPriority -- * * This function changes the priority of a tag by modifying its priority * and the priorities of other tags that are affected by the change. * * Results: * None. * * Side effects: * Priorities may be changed for some or all of the tags in textPtr. The * tags will be arranged so that there is exactly one tag at each * priority level between 0 and textPtr->sharedTextPtr->numTags-1, with * tagPtr at priority "prio". * *---------------------------------------------------------------------- */ static void ChangeTagPriority( TkText *textPtr, /* Information about text widget. */ TkTextTag *tagPtr, /* Tag whose priority is to be changed. */ int prio) /* New priority for tag. */ { int low, high, delta; register TkTextTag *tagPtr2; Tcl_HashEntry *hPtr; Tcl_HashSearch search; if (prio < 0) { prio = 0; } if (prio >= textPtr->sharedTextPtr->numTags) { prio = textPtr->sharedTextPtr->numTags-1; } if (prio == tagPtr->priority) { return; } if (prio < tagPtr->priority) { low = prio; high = tagPtr->priority-1; delta = 1; } else { low = tagPtr->priority+1; high = prio; delta = -1; } /* * Adjust first the 'sel' tag, then all others from the hash table */ if ((textPtr->selTagPtr->priority >= low) && (textPtr->selTagPtr->priority <= high)) { textPtr->selTagPtr->priority += delta; } for (hPtr = Tcl_FirstHashEntry(&textPtr->sharedTextPtr->tagTable, &search); hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { tagPtr2 = Tcl_GetHashValue(hPtr); if ((tagPtr2->priority >= low) && (tagPtr2->priority <= high)) { tagPtr2->priority += delta; } } tagPtr->priority = prio; } /* *-------------------------------------------------------------- * * TkTextBindProc -- * * This function is invoked by the Tk dispatcher to handle events * associated with bindings on items. * * Results: * None. * * Side effects: * Depends on the command invoked as part of the binding (if there was * any). * *-------------------------------------------------------------- */ void TkTextBindProc( ClientData clientData, /* Pointer to canvas structure. */ XEvent *eventPtr) /* Pointer to X event that just happened. */ { TkText *textPtr = clientData; int repick = 0; # define AnyButtonMask \ (Button1Mask|Button2Mask|Button3Mask|Button4Mask|Button5Mask) textPtr->refCount++; /* * This code simulates grabs for mouse buttons by keeping track of whether * a button is pressed and refusing to pick a new current character while * a button is pressed. */ if (eventPtr->type == ButtonPress) { textPtr->flags |= BUTTON_DOWN; } else if (eventPtr->type == ButtonRelease) { int mask; switch (eventPtr->xbutton.button) { case Button1: mask = Button1Mask; break; case Button2: mask = Button2Mask; break; case Button3: mask = Button3Mask; break; case Button4: mask = Button4Mask; break; case Button5: mask = Button5Mask; break; default: mask = 0; break; } if ((eventPtr->xbutton.state & AnyButtonMask) == (unsigned) mask) { textPtr->flags &= ~BUTTON_DOWN; repick = 1; } } else if ((eventPtr->type == EnterNotify) || (eventPtr->type == LeaveNotify)) { if (eventPtr->xcrossing.state & AnyButtonMask) { textPtr->flags |= BUTTON_DOWN; } else { textPtr->flags &= ~BUTTON_DOWN; } TkTextPickCurrent(textPtr, eventPtr); goto done; } else if (eventPtr->type == MotionNotify) { if (eventPtr->xmotion.state & AnyButtonMask) { textPtr->flags |= BUTTON_DOWN; } else { textPtr->flags &= ~BUTTON_DOWN; } TkTextPickCurrent(textPtr, eventPtr); } if ((textPtr->numCurTags > 0) && (textPtr->sharedTextPtr->bindingTable != NULL) && (textPtr->tkwin != NULL) && !(textPtr->flags & DESTROYED)) { TagBindEvent(textPtr, eventPtr, textPtr->numCurTags, textPtr->curTagArrayPtr); } if (repick) { unsigned int oldState; oldState = eventPtr->xbutton.state; eventPtr->xbutton.state &= ~(Button1Mask|Button2Mask |Button3Mask|Button4Mask|Button5Mask); if (!(textPtr->flags & DESTROYED)) { TkTextPickCurrent(textPtr, eventPtr); } eventPtr->xbutton.state = oldState; } done: if (--textPtr->refCount == 0) { ckfree(textPtr); } } /* *-------------------------------------------------------------- * * TkTextPickCurrent -- * * Find the character containing the coordinates in an event and place * the "current" mark on that character. If the "current" mark has moved * then generate a fake leave event on the old current character and a * fake enter event on the new current character. * * Results: * None. * * Side effects: * The current mark for textPtr may change. If it does, then the commands * associated with character entry and leave could do just about * anything. For example, the text widget might be deleted. It is up to * the caller to protect itself by incrementing the refCount of the text * widget. * *-------------------------------------------------------------- */ void TkTextPickCurrent( register TkText *textPtr, /* Text widget in which to select current * character. */ XEvent *eventPtr) /* Event describing location of mouse cursor. * Must be EnterWindow, LeaveWindow, * ButtonRelease, or MotionNotify. */ { TkTextIndex index; TkTextTag **oldArrayPtr, **newArrayPtr; TkTextTag **copyArrayPtr = NULL; /* Initialization needed to prevent compiler * warning. */ int numOldTags, numNewTags, i, j, size, nearby; XEvent event; /* * If a button is down, then don't do anything at all; we'll be called * again when all buttons are up, and we can repick then. This implements * a form of mouse grabbing. */ if (textPtr->flags & BUTTON_DOWN) { if (((eventPtr->type == EnterNotify) || (eventPtr->type == LeaveNotify)) && ((eventPtr->xcrossing.mode == NotifyGrab) || (eventPtr->xcrossing.mode == NotifyUngrab))) { /* * Special case: the window is being entered or left because of a * grab or ungrab. In this case, repick after all. Furthermore, * clear BUTTON_DOWN to release the simulated grab. */ textPtr->flags &= ~BUTTON_DOWN; } else { return; } } /* * Save information about this event in the widget in case we have to * synthesize more enter and leave events later (e.g. because a character * was deleted, causing a new character to be underneath the mouse * cursor). Also translate MotionNotify events into EnterNotify events, * since that's what gets reported to event handlers when the current * character changes. */ if (eventPtr != &textPtr->pickEvent) { if ((eventPtr->type == MotionNotify) || (eventPtr->type == ButtonRelease)) { textPtr->pickEvent.xcrossing.type = EnterNotify; textPtr->pickEvent.xcrossing.serial = eventPtr->xmotion.serial; textPtr->pickEvent.xcrossing.send_event = eventPtr->xmotion.send_event; textPtr->pickEvent.xcrossing.display = eventPtr->xmotion.display; textPtr->pickEvent.xcrossing.window = eventPtr->xmotion.window; textPtr->pickEvent.xcrossing.root = eventPtr->xmotion.root; textPtr->pickEvent.xcrossing.subwindow = None; textPtr->pickEvent.xcrossing.time = eventPtr->xmotion.time; textPtr->pickEvent.xcrossing.x = eventPtr->xmotion.x; textPtr->pickEvent.xcrossing.y = eventPtr->xmotion.y; textPtr->pickEvent.xcrossing.x_root = eventPtr->xmotion.x_root; textPtr->pickEvent.xcrossing.y_root = eventPtr->xmotion.y_root; textPtr->pickEvent.xcrossing.mode = NotifyNormal; textPtr->pickEvent.xcrossing.detail = NotifyNonlinear; textPtr->pickEvent.xcrossing.same_screen = eventPtr->xmotion.same_screen; textPtr->pickEvent.xcrossing.focus = False; textPtr->pickEvent.xcrossing.state = eventPtr->xmotion.state; } else { textPtr->pickEvent = *eventPtr; } } /* * Find the new current character, then find and sort all of the tags * associated with it. */ if (textPtr->pickEvent.type != LeaveNotify) { TkTextPixelIndex(textPtr, textPtr->pickEvent.xcrossing.x, textPtr->pickEvent.xcrossing.y, &index, &nearby); if (nearby) { newArrayPtr = NULL; numNewTags = 0; } else { newArrayPtr = TkBTreeGetTags(&index, textPtr, &numNewTags); SortTags(numNewTags, newArrayPtr); } } else { newArrayPtr = NULL; numNewTags = 0; } /* * Resort the tags associated with the previous marked character (the * priorities might have changed), then make a copy of the new tags, and * compare the old tags to the copy, nullifying any tags that are present * in both groups (i.e. the tags that haven't changed). */ SortTags(textPtr->numCurTags, textPtr->curTagArrayPtr); if (numNewTags > 0) { size = numNewTags * sizeof(TkTextTag *); copyArrayPtr = ckalloc(size); memcpy(copyArrayPtr, newArrayPtr, (size_t) size); for (i = 0; i < textPtr->numCurTags; i++) { for (j = 0; j < numNewTags; j++) { if (textPtr->curTagArrayPtr[i] == copyArrayPtr[j]) { textPtr->curTagArrayPtr[i] = NULL; copyArrayPtr[j] = NULL; break; } } } } /* * Invoke the binding system with a LeaveNotify event for all of the tags * that have gone away. We have to be careful here, because it's possible * that the binding could do something (like calling tkwait) that * eventually modifies textPtr->curTagArrayPtr. To avoid problems in * situations like this, update curTagArrayPtr to its new value before * invoking any bindings, and don't use it any more here. */ numOldTags = textPtr->numCurTags; textPtr->numCurTags = numNewTags; oldArrayPtr = textPtr->curTagArrayPtr; textPtr->curTagArrayPtr = newArrayPtr; if (numOldTags != 0) { if ((textPtr->sharedTextPtr->bindingTable != NULL) && (textPtr->tkwin != NULL) && !(textPtr->flags & DESTROYED)) { event = textPtr->pickEvent; event.type = LeaveNotify; /* * Always use a detail of NotifyAncestor. Besides being * consistent, this avoids problems where the binding code will * discard NotifyInferior events. */ event.xcrossing.detail = NotifyAncestor; TagBindEvent(textPtr, &event, numOldTags, oldArrayPtr); } ckfree(oldArrayPtr); } /* * Reset the "current" mark (be careful to recompute its location, since * it might have changed during an event binding). Then invoke the binding * system with an EnterNotify event for all of the tags that have just * appeared. */ TkTextPixelIndex(textPtr, textPtr->pickEvent.xcrossing.x, textPtr->pickEvent.xcrossing.y, &index, &nearby); TkTextSetMark(textPtr, "current", &index); if (numNewTags != 0) { if ((textPtr->sharedTextPtr->bindingTable != NULL) && (textPtr->tkwin != NULL)