/*
* 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 1.8 2002/08/05 04:30:40 dgp Exp $
*/
#include "default.h"
#include "tkPort.h"
#include "tkInt.h"
#include "tkText.h"
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_LANGARG, "-elide", (char *) NULL, (char *) NULL,
"0", Tk_Offset(TkTextTag, elideString),
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_LANGARG, "-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_LANGARG, "-tabs", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TkTextTag, tabString), TK_CONFIG_NULL_OK},
{TK_CONFIG_LANGARG, "-underline", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TkTextTag, underlineString),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-wrap", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TkTextTag, wrapMode),
TK_CONFIG_NULL_OK, &textWrapModeOption},
{TK_CONFIG_LANGARG, "-data", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TkTextTag, userData),
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, CONST 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. */
CONST 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) {
XEvent event;
/*
* Send an event that the selection changed.
* This is equivalent to
* "event generate $textWidget <<Selection>>"
*/
memset((VOID *) &event, 0, sizeof(event));
event.xany.type = VirtualEvent;
event.xany.serial = NextRequest(Tk_Display(textPtr->tkwin));
event.xany.send_event = False;
event.xany.window = Tk_WindowId(textPtr->tkwin);
event.xany.display = Tk_Display(textPtr->tkwin);
((XVirtualEvent *) &event)->name = Tk_GetUid("Selection");
Tk_HandleEvent(&event);
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]);
}
#ifndef _LANG
if (argv[5][0] == '+') {
argv[5]++;
append = 1;
}
#endif
mask = Tk_CreateBinding(interp, textPtr->bindingTable,
(ClientData) tagPtr, argv[4], objv[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) {
Tcl_Obj *command;
command = Tk_GetBinding(interp, textPtr->bindingTable,
(ClientData) tagPtr, argv[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;
} else {
Tcl_ResetResult(interp);
}
} else {
Tcl_SetObjResult(interp, command);
}
} 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_GetBooleanFromObj(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_GetBooleanFromObj(interp, tagPtr->underlineString,
&tagPtr->underline) != TCL_OK) {
return TCL_ERROR;
}
}
if (tagPtr->elideString != NULL) {
if (Tcl_GetBooleanFromObj(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->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->elideString != NULL)
|| (tagPtr->wrapMode != TEXT_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);
if (tagPtr == textPtr->selTagPtr) {
XEvent event;
/*
* Send an event that the selection changed.
* This is equivalent to
* "event generate $textWidget <<Selection>>"
*/
memset((VOID *) &event, 0, sizeof(event));
event.xany.type = VirtualEvent;
event.xany.serial = NextRequest(Tk_Display(textPtr->tkwin));
event.xany.send_event = False;
event.xany.window = Tk_WindowId(textPtr->tkwin);
event.xany.display = Tk_Display(textPtr->tkwin);
((XVirtualEvent *) &event)->name = Tk_GetUid("Selection");
Tk_HandleEvent(&event);
}
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. */
CONST 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));
memset(tagPtr,0,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->elideString = NULL;
tagPtr->elide = 0;
tagPtr->wrapMode = TEXT_WRAPMODE_NULL;
tagPtr->userData = 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. */
CONST 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. */
{
Tk_FreeOptions(tagConfigSpecs,(char *) tagPtr,textPtr->display, 0);
/* Now added above these should be redundant */
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->underlineString != NULL) {
LangFreeArg(tagPtr->underlineString,TCL_DYNAMIC);
}
if (tagPtr->elideString != NULL) {
LangFreeArg(tagPtr->elideString,TCL_DYNAMIC);
}
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) {
LangFreeArg(tagPtr->overstrikeString, TCL_DYNAMIC);
}
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) {
LangFreeArg(tagPtr->tabString,TCL_DYNAMIC);
}
if (tagPtr->tabArrayPtr != NULL) {
ckfree((char *) tagPtr->tabArrayPtr);
}
if (tagPtr->userData != NULL) {
LangFreeArg(tagPtr->userData,TCL_DYNAMIC);
}
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);
}
}