/* * 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 1.1.4.2 1998/09/30 02:17:26 stanton Exp $ */ #include "default.h" #include "tkPort.h" #include "tk.h" #include "tkText.h" /* * Information used for parsing tag configuration information: */ static Tk_ConfigSpec tagConfigSpecs[] = { {TK_CONFIG_BORDER, "-background", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, border), TK_CONFIG_NULL_OK}, {TK_CONFIG_BITMAP, "-bgstipple", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, bgStipple), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-borderwidth", (char *) NULL, (char *) NULL, "0", Tk_Offset(TkTextTag, bdString), TK_CONFIG_DONT_SET_DEFAULT|TK_CONFIG_NULL_OK}, {TK_CONFIG_BITMAP, "-fgstipple", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, fgStipple), TK_CONFIG_NULL_OK}, {TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, tkfont), TK_CONFIG_NULL_OK}, {TK_CONFIG_COLOR, "-foreground", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, fgColor), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-justify", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, justifyString), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-lmargin1", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, lMargin1String), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-lmargin2", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, lMargin2String), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-offset", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, offsetString), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-overstrike", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, overstrikeString), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-relief", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, reliefString), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-rmargin", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, rMarginString), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-spacing1", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, spacing1String), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-spacing2", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, spacing2String), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-spacing3", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, spacing3String), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-tabs", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, tabString), TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-underline", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, underlineString), TK_CONFIG_NULL_OK}, {TK_CONFIG_UID, "-wrap", (char *) NULL, (char *) NULL, (char *) NULL, Tk_Offset(TkTextTag, wrapMode), TK_CONFIG_NULL_OK}, {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL, (char *) NULL, 0, 0} }; /* * Forward declarations for procedures defined later in this file: */ static void ChangeTagPriority _ANSI_ARGS_((TkText *textPtr, TkTextTag *tagPtr, int prio)); static TkTextTag * FindTag _ANSI_ARGS_((Tcl_Interp *interp, TkText *textPtr, char *tagName)); static void SortTags _ANSI_ARGS_((int numTags, TkTextTag **tagArrayPtr)); static int TagSortProc _ANSI_ARGS_((CONST VOID *first, CONST VOID *second)); /* *-------------------------------------------------------------- * * TkTextTagCmd -- * * This procedure 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(textPtr, interp, argc, argv) register TkText *textPtr; /* Information about text widget. */ Tcl_Interp *interp; /* Current interpreter. */ int argc; /* Number of arguments. */ char **argv; /* Argument strings. Someone else has already * parsed this command enough to know that * argv[1] is "tag". */ { int c, i, addTag; size_t length; char *fullOption; register TkTextTag *tagPtr; TkTextIndex first, last, index1, index2; if (argc < 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag option ?arg arg ...?\"", (char *) NULL); return TCL_ERROR; } c = argv[2][0]; length = strlen(argv[2]); if ((c == 'a') && (strncmp(argv[2], "add", length) == 0)) { fullOption = "add"; addTag = 1; addAndRemove: if (argc < 5) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag ", fullOption, " tagName index1 ?index2 index1 index2 ...?\"", (char *) NULL); return TCL_ERROR; } tagPtr = TkTextCreateTag(textPtr, argv[3]); for (i = 4; i < argc; i += 2) { if (TkTextGetIndex(interp, textPtr, argv[i], &index1) != TCL_OK) { return TCL_ERROR; } if (argc > (i+1)) { if (TkTextGetIndex(interp, textPtr, argv[i+1], &index2) != TCL_OK) { return TCL_ERROR; } if (TkTextIndexCmp(&index1, &index2) >= 0) { return TCL_OK; } } else { index2 = index1; TkTextIndexForwChars(&index2, 1, &index2); } if (tagPtr->affectsDisplay) { TkTextRedrawTag(textPtr, &index1, &index2, tagPtr, !addTag); } else { /* * Still need to trigger enter/leave events on tags that * have changed. */ TkTextEventuallyRepick(textPtr); } TkBTreeTag(&index1, &index2, tagPtr, addTag); /* * If the tag is "sel" then grab the selection if we're supposed * to export it and don't already have it. Also, invalidate * partially-completed selection retrievals. */ if (tagPtr == textPtr->selTagPtr) { if (addTag && textPtr->exportSelection && !(textPtr->flags & GOT_SELECTION)) { Tk_OwnSelection(textPtr->tkwin, XA_PRIMARY, TkTextLostSelection, (ClientData) textPtr); textPtr->flags |= GOT_SELECTION; } textPtr->abortSelections = 1; } } } else if ((c == 'b') && (strncmp(argv[2], "bind", length) == 0)) { if ((argc < 4) || (argc > 6)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag bind tagName ?sequence? ?command?\"", (char *) NULL); return TCL_ERROR; } tagPtr = TkTextCreateTag(textPtr, argv[3]); /* * Make a binding table if the widget doesn't already have * one. */ if (textPtr->bindingTable == NULL) { textPtr->bindingTable = Tk_CreateBindingTable(interp); } if (argc == 6) { int append = 0; unsigned long mask; if (argv[5][0] == 0) { return Tk_DeleteBinding(interp, textPtr->bindingTable, (ClientData) tagPtr, argv[4]); } if (argv[5][0] == '+') { argv[5]++; append = 1; } mask = Tk_CreateBinding(interp, textPtr->bindingTable, (ClientData) tagPtr, argv[4], argv[5], 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->bindingTable, (ClientData) tagPtr, argv[4]); Tcl_ResetResult(interp); Tcl_AppendResult(interp, "requested illegal events; ", "only key, button, motion, enter, leave, and virtual ", "events may be used", (char *) NULL); return TCL_ERROR; } } else if (argc == 5) { char *command; command = Tk_GetBinding(interp, textPtr->bindingTable, (ClientData) tagPtr, argv[4]); if (command == NULL) { 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; } else { Tcl_ResetResult(interp); } } else { Tcl_SetResult(interp, command, TCL_STATIC); } } else { Tk_GetAllBindings(interp, textPtr->bindingTable, (ClientData) tagPtr); } } else if ((c == 'c') && (strncmp(argv[2], "cget", length) == 0) && (length >= 2)) { if (argc != 5) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag cget tagName option\"", (char *) NULL); return TCL_ERROR; } tagPtr = FindTag(interp, textPtr, argv[3]); if (tagPtr == NULL) { return TCL_ERROR; } return Tk_ConfigureValue(interp, textPtr->tkwin, tagConfigSpecs, (char *) tagPtr, argv[4], 0); } else if ((c == 'c') && (strncmp(argv[2], "configure", length) == 0) && (length >= 2)) { if (argc < 4) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag configure tagName ?option? ?value? ", "?option value ...?\"", (char *) NULL); return TCL_ERROR; } tagPtr = TkTextCreateTag(textPtr, argv[3]); if (argc == 4) { return Tk_ConfigureInfo(interp, textPtr->tkwin, tagConfigSpecs, (char *) tagPtr, (char *) NULL, 0); } else if (argc == 5) { return Tk_ConfigureInfo(interp, textPtr->tkwin, tagConfigSpecs, (char *) tagPtr, argv[4], 0); } else { int result; result = Tk_ConfigureWidget(interp, textPtr->tkwin, tagConfigSpecs, argc-4, argv+4, (char *) tagPtr, 0); /* * 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->bdString != NULL) { if (Tk_GetPixels(interp, textPtr->tkwin, tagPtr->bdString, &tagPtr->borderWidth) != TCL_OK) { return TCL_ERROR; } 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((char *) tagPtr->tabArrayPtr); tagPtr->tabArrayPtr = NULL; } if (tagPtr->tabString != NULL) { tagPtr->tabArrayPtr = TkTextGetTabs(interp, textPtr->tkwin, tagPtr->tabString); 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->wrapMode != NULL) && (tagPtr->wrapMode != tkTextCharUid) && (tagPtr->wrapMode != tkTextNoneUid) && (tagPtr->wrapMode != tkTextWordUid)) { Tcl_AppendResult(interp, "bad wrap mode \"", tagPtr->wrapMode, "\": must be char, none, or word", (char *) NULL); tagPtr->wrapMode = NULL; 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->selBdString = tagPtr->bdString; textPtr->selFgColorPtr = tagPtr->fgColor; } tagPtr->affectsDisplay = 0; if ((tagPtr->border != NULL) || (tagPtr->bdString != NULL) || (tagPtr->reliefString != NULL) || (tagPtr->bgStipple != None) || (tagPtr->fgColor != NULL) || (tagPtr->tkfont != None) || (tagPtr->fgStipple != None) || (tagPtr->justifyString != NULL) || (tagPtr->lMargin1String != NULL) || (tagPtr->lMargin2String != NULL) || (tagPtr->offsetString != NULL) || (tagPtr->overstrikeString != NULL) || (tagPtr->rMarginString != NULL) || (tagPtr->spacing1String != NULL) || (tagPtr->spacing2String != NULL) || (tagPtr->spacing3String != NULL) || (tagPtr->tabString != NULL) || (tagPtr->underlineString != NULL) || (tagPtr->wrapMode != NULL)) { tagPtr->affectsDisplay = 1; } TkTextRedrawTag(textPtr, (TkTextIndex *) NULL, (TkTextIndex *) NULL, tagPtr, 1); return result; } } else if ((c == 'd') && (strncmp(argv[2], "delete", length) == 0)) { Tcl_HashEntry *hPtr; if (argc < 4) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag delete tagName tagName ...\"", (char *) NULL); return TCL_ERROR; } for (i = 3; i < argc; i++) { hPtr = Tcl_FindHashEntry(&textPtr->tagTable, argv[i]); if (hPtr == NULL) { continue; } tagPtr = (TkTextTag *) Tcl_GetHashValue(hPtr); if (tagPtr == textPtr->selTagPtr) { continue; } if (tagPtr->affectsDisplay) { TkTextRedrawTag(textPtr, (TkTextIndex *) NULL, (TkTextIndex *) NULL, tagPtr, 1); } TkTextMakeByteIndex(textPtr->tree, 0, 0, &first); TkTextMakeByteIndex(textPtr->tree, TkBTreeNumLines(textPtr->tree), 0, &last), TkBTreeTag(&first, &last, tagPtr, 0); Tcl_DeleteHashEntry(hPtr); if (textPtr->bindingTable != NULL) { Tk_DeleteAllBindings(textPtr->bindingTable, (ClientData) tagPtr); } /* * Update the tag priorities to reflect the deletion of this tag. */ ChangeTagPriority(textPtr, tagPtr, textPtr->numTags-1); textPtr->numTags -= 1; TkTextFreeTag(textPtr, tagPtr); } } else if ((c == 'l') && (strncmp(argv[2], "lower", length) == 0)) { TkTextTag *tagPtr2; int prio; if ((argc != 4) && (argc != 5)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag lower tagName ?belowThis?\"", (char *) NULL); return TCL_ERROR; } tagPtr = FindTag(interp, textPtr, argv[3]); if (tagPtr == NULL) { return TCL_ERROR; } if (argc == 5) { tagPtr2 = FindTag(interp, textPtr, argv[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); TkTextRedrawTag(textPtr, (TkTextIndex *) NULL, (TkTextIndex *) NULL, tagPtr, 1); } else if ((c == 'n') && (strncmp(argv[2], "names", length) == 0) && (length >= 2)) { TkTextTag **arrayPtr; int arraySize; if ((argc != 3) && (argc != 4)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag names ?index?\"", (char *) NULL); return TCL_ERROR; } if (argc == 3) { Tcl_HashSearch search; Tcl_HashEntry *hPtr; arrayPtr = (TkTextTag **) ckalloc((unsigned) (textPtr->numTags * sizeof(TkTextTag *))); for (i = 0, hPtr = Tcl_FirstHashEntry(&textPtr->tagTable, &search); hPtr != NULL; i++, hPtr = Tcl_NextHashEntry(&search)) { arrayPtr[i] = (TkTextTag *) Tcl_GetHashValue(hPtr); } arraySize = textPtr->numTags; } else { if (TkTextGetIndex(interp, textPtr, argv[3], &index1) != TCL_OK) { return TCL_ERROR; } arrayPtr = TkBTreeGetTags(&index1, &arraySize); if (arrayPtr == NULL) { return TCL_OK; } } SortTags(arraySize, arrayPtr); for (i = 0; i < arraySize; i++) { tagPtr = arrayPtr[i]; Tcl_AppendElement(interp, tagPtr->name); } ckfree((char *) arrayPtr); } else if ((c == 'n') && (strncmp(argv[2], "nextrange", length) == 0) && (length >= 2)) { TkTextSearch tSearch; char position[TK_POS_CHARS]; if ((argc != 5) && (argc != 6)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag nextrange tagName index1 ?index2?\"", (char *) NULL); return TCL_ERROR; } tagPtr = FindTag((Tcl_Interp *) NULL, textPtr, argv[3]); if (tagPtr == NULL) { return TCL_OK; } if (TkTextGetIndex(interp, textPtr, argv[4], &index1) != TCL_OK) { return TCL_ERROR; } TkTextMakeByteIndex(textPtr->tree, TkBTreeNumLines(textPtr->tree), 0, &last); if (argc == 5) { index2 = last; } else if (TkTextGetIndex(interp, textPtr, argv[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(&tSearch.curIndex, position); Tcl_AppendElement(interp, position); TkBTreeNextTag(&tSearch); TkTextPrintIndex(&tSearch.curIndex, position); Tcl_AppendElement(interp, position); } else if ((c == 'p') && (strncmp(argv[2], "prevrange", length) == 0) && (length >= 2)) { TkTextSearch tSearch; char position1[TK_POS_CHARS]; char position2[TK_POS_CHARS]; if ((argc != 5) && (argc != 6)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag prevrange tagName index1 ?index2?\"", (char *) NULL); return TCL_ERROR; } tagPtr = FindTag((Tcl_Interp *) NULL, textPtr, argv[3]); if (tagPtr == NULL) { return TCL_OK; } if (TkTextGetIndex(interp, textPtr, argv[4], &index1) != TCL_OK) { return TCL_ERROR; } if (argc == 5) { TkTextMakeByteIndex(textPtr->tree, 0, 0, &index2); } else if (TkTextGetIndex(interp, textPtr, argv[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)) { return TCL_OK; } if (tSearch.segPtr->typePtr == &tkTextToggleOnType) { TkTextPrintIndex(&tSearch.curIndex, position1); TkTextMakeByteIndex(textPtr->tree, TkBTreeNumLines(textPtr->tree), 0, &last); TkBTreeStartSearch(&tSearch.curIndex, &last, tagPtr, &tSearch); TkBTreeNextTag(&tSearch); TkTextPrintIndex(&tSearch.curIndex, position2); } else { TkTextPrintIndex(&tSearch.curIndex, position2); TkBTreePrevTag(&tSearch); if (TkTextIndexCmp(&tSearch.curIndex, &index2) < 0) { return TCL_OK; } TkTextPrintIndex(&tSearch.curIndex, position1); } Tcl_AppendElement(interp, position1); Tcl_AppendElement(interp, position2); } else if ((c == 'r') && (strncmp(argv[2], "raise", length) == 0) && (length >= 3)) { TkTextTag *tagPtr2; int prio; if ((argc != 4) && (argc != 5)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag raise tagName ?aboveThis?\"", (char *) NULL); return TCL_ERROR; } tagPtr = FindTag(interp, textPtr, argv[3]); if (tagPtr == NULL) { return TCL_ERROR; } if (argc == 5) { tagPtr2 = FindTag(interp, textPtr, argv[4]); if (tagPtr2 == NULL) { return TCL_ERROR; } if (tagPtr->priority <= tagPtr2->priority) { prio = tagPtr2->priority; } else { prio = tagPtr2->priority + 1; } } else { prio = textPtr->numTags-1; } ChangeTagPriority(textPtr, tagPtr, prio); TkTextRedrawTag(textPtr, (TkTextIndex *) NULL, (TkTextIndex *) NULL, tagPtr, 1); } else if ((c == 'r') && (strncmp(argv[2], "ranges", length) == 0) && (length >= 3)) { TkTextSearch tSearch; char position[TK_POS_CHARS]; if (argc != 4) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " tag ranges tagName\"", (char *) NULL); return TCL_ERROR; } tagPtr = FindTag((Tcl_Interp *) NULL, textPtr, argv[3]); if (tagPtr == NULL) { return TCL_OK; } TkTextMakeByteIndex(textPtr->tree, 0, 0, &first); TkTextMakeByteIndex(textPtr->tree, TkBTreeNumLines(textPtr->tree), 0, &last); TkBTreeStartSearch(&first, &last, tagPtr, &tSearch); if (TkBTreeCharTagged(&first, tagPtr)) { TkTextPrintIndex(&first, position); Tcl_AppendElement(interp, position); } while (TkBTreeNextTag(&tSearch)) { TkTextPrintIndex(&tSearch.curIndex, position); Tcl_AppendElement(interp, position); } } else if ((c == 'r') && (strncmp(argv[2], "remove", length) == 0) && (length >= 2)) { fullOption = "remove"; addTag = 0; goto addAndRemove; } else { Tcl_AppendResult(interp, "bad tag option \"", argv[2], "\": must be add, bind, cget, configure, delete, lower, ", "names, nextrange, raise, ranges, or remove", (char *) NULL); return TCL_ERROR; } 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(textPtr, tagName) TkText *textPtr; /* Widget in which tag is being used. */ char *tagName; /* Name of desired tag. */ { register TkTextTag *tagPtr; Tcl_HashEntry *hPtr; int new; hPtr = Tcl_CreateHashEntry(&textPtr->tagTable, tagName, &new); if (!new) { return (TkTextTag *) Tcl_GetHashValue(hPtr); } /* * No existing entry. Create a new one, initialize it, and add a * pointer to it to the hash table entry. */ tagPtr = (TkTextTag *) ckalloc(sizeof(TkTextTag)); tagPtr->name = Tcl_GetHashKey(&textPtr->tagTable, hPtr); tagPtr->toggleCount = 0; tagPtr->tagRootPtr = NULL; tagPtr->priority = textPtr->numTags; tagPtr->border = NULL; tagPtr->bdString = NULL; tagPtr->borderWidth = 0; 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->tabString = NULL; tagPtr->tabArrayPtr = NULL; tagPtr->underlineString = NULL; tagPtr->underline = 0; tagPtr->wrapMode = NULL; tagPtr->affectsDisplay = 0; textPtr->numTags++; Tcl_SetHashValue(hPtr, tagPtr); 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(interp, textPtr, tagName) 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. */ char *tagName; /* Name of desired tag. */ { Tcl_HashEntry *hPtr; hPtr = Tcl_FindHashEntry(&textPtr->tagTable, tagName); if (hPtr != NULL) { return (TkTextTag *) Tcl_GetHashValue(hPtr); } if (interp != NULL) { Tcl_AppendResult(interp, "tag \"", tagName, "\" isn't defined in text widget", (char *) NULL); } return NULL; } /* *---------------------------------------------------------------------- * * TkTextFreeTag -- * * This procedure 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(textPtr, tagPtr) TkText *textPtr; /* Info about overall widget. */ register TkTextTag *tagPtr; /* Tag being deleted. */ { if (tagPtr->border != None) { Tk_Free3DBorder(tagPtr->border); } if (tagPtr->bdString != NULL) { ckfree(tagPtr->bdString); } if (tagPtr->reliefString != NULL) { ckfree(tagPtr->reliefString); } if (tagPtr->bgStipple != None) { Tk_FreeBitmap(textPtr->display, tagPtr->bgStipple); } if (tagPtr->fgColor != None) { Tk_FreeColor(tagPtr->fgColor); } Tk_FreeFont(tagPtr->tkfont); if (tagPtr->fgStipple != None) { Tk_FreeBitmap(textPtr->display, tagPtr->fgStipple); } if (tagPtr->justifyString != NULL) { ckfree(tagPtr->justifyString); } if (tagPtr->lMargin1String != NULL) { ckfree(tagPtr->lMargin1String); } if (tagPtr->lMargin2String != NULL) { ckfree(tagPtr->lMargin2String); } if (tagPtr->offsetString != NULL) { ckfree(tagPtr->offsetString); } if (tagPtr->overstrikeString != NULL) { ckfree(tagPtr->overstrikeString); } if (tagPtr->rMarginString != NULL) { ckfree(tagPtr->rMarginString); } if (tagPtr->spacing1String != NULL) { ckfree(tagPtr->spacing1String); } if (tagPtr->spacing2String != NULL) { ckfree(tagPtr->spacing2String); } if (tagPtr->spacing3String != NULL) { ckfree(tagPtr->spacing3String); } if (tagPtr->tabString != NULL) { ckfree(tagPtr->tabString); } if (tagPtr->tabArrayPtr != NULL) { ckfree((char *) tagPtr->tabArrayPtr); } if (tagPtr->underlineString != NULL) { ckfree(tagPtr->underlineString); } ckfree((char *) tagPtr); } /* *---------------------------------------------------------------------- * * SortTags -- * * This procedure 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(numTags, tagArrayPtr) 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((VOID *) tagArrayPtr, (unsigned) numTags, sizeof (TkTextTag *), TagSortProc); } } /* *---------------------------------------------------------------------- * * TagSortProc -- * * This procedure 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(first, second) CONST VOID *first, *second; /* Elements to be compared. */ { TkTextTag *tagPtr1, *tagPtr2; tagPtr1 = * (TkTextTag **) first; tagPtr2 = * (TkTextTag **) second; return tagPtr1->priority - tagPtr2->priority; } /* *---------------------------------------------------------------------- * * ChangeTagPriority -- * * This procedure 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->numTags-1, * with tagPtr at priority "prio". * *---------------------------------------------------------------------- */ static void ChangeTagPriority(textPtr, tagPtr, prio) 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->numTags) { prio = textPtr->numTags-1; } if (prio == tagPtr->priority) { return; } else if (prio < tagPtr->priority) { low = prio; high = tagPtr->priority-1; delta = 1; } else { low = tagPtr->priority+1; high = prio; delta = -1; } for (hPtr = Tcl_FirstHashEntry(&textPtr->tagTable, &search); hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { tagPtr2 = (TkTextTag *) Tcl_GetHashValue(hPtr); if ((tagPtr2->priority >= low) && (tagPtr2->priority <= high)) { tagPtr2->priority += delta; } } tagPtr->priority = prio; } /* *-------------------------------------------------------------- * * TkTextBindProc -- * * This procedure 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, eventPtr) ClientData clientData; /* Pointer to canvas structure. */ XEvent *eventPtr; /* Pointer to X event that just * happened. */ { TkText *textPtr = (TkText *) clientData; int repick = 0; # define AnyButtonMask (Button1Mask|Button2Mask|Button3Mask\ |Button4Mask|Button5Mask) Tcl_Preserve((ClientData) textPtr); /* * 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->bindingTable != NULL) && (textPtr->tkwin != NULL)) { Tk_BindEvent(textPtr->bindingTable, eventPtr, textPtr->tkwin, textPtr->numCurTags, (ClientData *) textPtr->curTagArrayPtr); } if (repick) { unsigned int oldState; oldState = eventPtr->xbutton.state; eventPtr->xbutton.state &= ~(Button1Mask|Button2Mask |Button3Mask|Button4Mask|Button5Mask); TkTextPickCurrent(textPtr, eventPtr); eventPtr->xbutton.state = oldState; } done: Tcl_Release((ClientData) 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 * with calls to Tcl_Preserve and Tcl_Release. * *-------------------------------------------------------------- */ void TkTextPickCurrent(textPtr, eventPtr) 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; 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); newArrayPtr = TkBTreeGetTags(&index, &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 = (TkTextTag **) ckalloc((unsigned) size); memcpy((VOID *) copyArrayPtr, (VOID *) 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->bindingTable != NULL) && (textPtr->tkwin != NULL)) { 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; Tk_BindEvent(textPtr->bindingTable, &event, textPtr->tkwin, numOldTags, (ClientData *) oldArrayPtr); } ckfree((char *) 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); TkTextSetMark(textPtr, "current", &index); if (numNewTags != 0) { if ((textPtr->bindingTable != NULL) && (textPtr->tkwin != NULL)) { event = textPtr->pickEvent; event.type = EnterNotify; event.xcrossing.detail = NotifyAncestor; Tk_BindEvent(textPtr->bindingTable, &event, textPtr->tkwin, numNewTags, (ClientData *) copyArrayPtr); } ckfree((char *) copyArrayPtr); } }