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ckText.c
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ckText.c
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/*
* ckText.c --
*
* This module provides a big chunk of the implementation of
* multi-line editable text widgets for ck. Among other things,
* it provides the Tcl command interfaces to text widgets and
* the display code. The B-tree representation of text is
* implemented elsewhere.
*
* Copyright (c) 1992-1994 The Regents of the University of California.
* Copyright (c) 1994-1995 Sun Microsystems, Inc.
* Copyright (c) 1995 Christian Werner
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "ckPort.h"
#include "ck.h"
#include "ckText.h"
#include "default.h"
/*
* Information used to parse text configuration options:
*/
static Ck_ConfigSpec configSpecs[] = {
{CK_CONFIG_ATTR, "-attributes", "attributes", "Attributes",
DEF_TEXT_ATTR, Ck_Offset(CkText, attr), 0},
{CK_CONFIG_COLOR, "-background", "background", "Background",
DEF_TEXT_BG_COLOR, Ck_Offset(CkText, bg), CK_CONFIG_COLOR_ONLY},
{CK_CONFIG_COLOR, "-background", "background", "Background",
DEF_TEXT_BG_MONO, Ck_Offset(CkText, bg), CK_CONFIG_MONO_ONLY},
{CK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
(char *) NULL, 0, 0},
{CK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
(char *) NULL, 0, 0},
{CK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
DEF_TEXT_FG, Ck_Offset(CkText, fg), 0},
{CK_CONFIG_COORD, "-height", "height", "Height",
DEF_TEXT_HEIGHT, Ck_Offset(CkText, height), 0},
{CK_CONFIG_ATTR, "-selectattributes", "selectAttributes",
"SelectAttributes", DEF_TEXT_SELECT_ATTR_COLOR,
Ck_Offset(CkText, selAttr), CK_CONFIG_COLOR_ONLY},
{CK_CONFIG_ATTR, "-selectattributes", "selectAttributes",
"SelectAttributes", DEF_TEXT_SELECT_ATTR_MONO,
Ck_Offset(CkText, selAttr), CK_CONFIG_MONO_ONLY},
{CK_CONFIG_COLOR, "-selectbackground", "selectBackground", "Foreground",
DEF_TEXT_SELECT_BG_COLOR, Ck_Offset(CkText, selBg),
CK_CONFIG_COLOR_ONLY},
{CK_CONFIG_COLOR, "-selectbackground", "selectBackground", "Foreground",
DEF_TEXT_SELECT_BG_MONO, Ck_Offset(CkText, selBg),
CK_CONFIG_MONO_ONLY},
{CK_CONFIG_COLOR, "-selectforeground", "selectForeground", "Background",
DEF_TEXT_SELECT_FG_COLOR, Ck_Offset(CkText, selFg),
CK_CONFIG_COLOR_ONLY},
{CK_CONFIG_COLOR, "-selectforeground", "selectForeground", "Background",
DEF_TEXT_SELECT_FG_MONO, Ck_Offset(CkText, selFg),
CK_CONFIG_MONO_ONLY},
{CK_CONFIG_UID, "-state", "state", "State",
DEF_TEXT_STATE, Ck_Offset(CkText, state), 0},
{CK_CONFIG_STRING, "-tabs", "tabs", "Tabs",
DEF_TEXT_TABS, Ck_Offset(CkText, tabOptionString), CK_CONFIG_NULL_OK},
{CK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
DEF_TEXT_TAKE_FOCUS, Ck_Offset(CkText, takeFocus),
CK_CONFIG_NULL_OK},
{CK_CONFIG_COORD, "-width", "width", "Width",
DEF_TEXT_WIDTH, Ck_Offset(CkText, width), 0},
{CK_CONFIG_UID, "-wrap", "wrap", "Wrap",
DEF_TEXT_WRAP, Ck_Offset(CkText, wrapMode), 0},
{CK_CONFIG_STRING, "-xscrollcommand", "xScrollCommand", "ScrollCommand",
DEF_TEXT_XSCROLL_COMMAND, Ck_Offset(CkText, xScrollCmd),
CK_CONFIG_NULL_OK},
{CK_CONFIG_STRING, "-yscrollcommand", "yScrollCommand", "ScrollCommand",
DEF_TEXT_YSCROLL_COMMAND, Ck_Offset(CkText, yScrollCmd),
CK_CONFIG_NULL_OK},
{CK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
(char *) NULL, 0, 0}
};
/*
* Ck_Uid's used to represent text states:
*/
Ck_Uid ckTextCharUid = NULL;
Ck_Uid ckTextDisabledUid = NULL;
Ck_Uid ckTextNoneUid = NULL;
Ck_Uid ckTextNormalUid = NULL;
Ck_Uid ckTextWordUid = NULL;
/*
* Boolean variable indicating whether or not special debugging code
* should be executed.
*/
int ckTextDebug = 0;
/*
* Forward declarations for procedures defined later in this file:
*/
static int ConfigureText _ANSI_ARGS_((Tcl_Interp *interp,
CkText *textPtr, int argc, char **argv, int flags));
static int DeleteChars _ANSI_ARGS_((CkText *textPtr,
char *index1String, char *index2String));
static void DestroyText _ANSI_ARGS_((ClientData clientData));
static void InsertChars _ANSI_ARGS_((CkText *textPtr,
CkTextIndex *indexPtr, char *string));
static void TextCmdDeletedProc _ANSI_ARGS_((
ClientData clientData));
static void TextEventProc _ANSI_ARGS_((ClientData clientData,
CkEvent *eventPtr));
static int TextSearchCmd _ANSI_ARGS_((CkText *textPtr,
Tcl_Interp *interp, int argc, char **argv));
static int TextWidgetCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
/*
*--------------------------------------------------------------
*
* Ck_TextCmd --
*
* This procedure is invoked to process the "text" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*--------------------------------------------------------------
*/
int
Ck_TextCmd(clientData, interp, argc, argv)
ClientData clientData; /* Main window associated with
* interpreter. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
CkWindow *mainPtr = (CkWindow *) clientData;
CkWindow *new;
register CkText *textPtr;
CkTextIndex startIndex;
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " pathName ?options?\"", (char *) NULL);
return TCL_ERROR;
}
/*
* Perform once-only initialization:
*/
if (ckTextNormalUid == NULL) {
ckTextCharUid = Ck_GetUid("char");
ckTextDisabledUid = Ck_GetUid("disabled");
ckTextNoneUid = Ck_GetUid("none");
ckTextNormalUid = Ck_GetUid("normal");
ckTextWordUid = Ck_GetUid("word");
}
/*
* Create the window.
*/
new = Ck_CreateWindowFromPath(interp, mainPtr, argv[1], 0);
if (new == NULL) {
return TCL_ERROR;
}
textPtr = (CkText *) ckalloc(sizeof(CkText));
textPtr->winPtr = new;
textPtr->interp = interp;
textPtr->widgetCmd = Tcl_CreateCommand(interp,
new->pathName, TextWidgetCmd, (ClientData) textPtr,
TextCmdDeletedProc);
textPtr->tree = CkBTreeCreate();
Tcl_InitHashTable(&textPtr->tagTable, TCL_STRING_KEYS);
textPtr->numTags = 0;
Tcl_InitHashTable(&textPtr->markTable, TCL_STRING_KEYS);
Tcl_InitHashTable(&textPtr->windowTable, TCL_STRING_KEYS);
textPtr->state = ckTextNormalUid;
textPtr->bg = 0;
textPtr->fg = 0;
textPtr->attr = 0;
textPtr->tabOptionString = NULL;
textPtr->tabArrayPtr = NULL;
textPtr->wrapMode = ckTextCharUid;
textPtr->width = 0;
textPtr->height = 0;
textPtr->prevWidth = new->width;
textPtr->prevHeight = new->height;
CkTextCreateDInfo(textPtr);
#if CK_USE_UTF
CkTextMakeByteIndex(textPtr->tree, 0, 0, &startIndex);
#else
CkTextMakeIndex(textPtr->tree, 0, 0, &startIndex);
#endif
CkTextSetYView(textPtr, &startIndex, 0);
textPtr->selTagPtr = NULL;
textPtr->selBg = 0;
textPtr->selFg = 0;
textPtr->selAttr = 0;
textPtr->abortSelections = 0;
textPtr->insertMarkPtr = NULL;
textPtr->bindingTable = NULL;
textPtr->currentMarkPtr = NULL;
textPtr->pickEvent.type = -1;
textPtr->numCurTags = 0;
textPtr->curTagArrayPtr = NULL;
textPtr->takeFocus = NULL;
textPtr->xScrollCmd = NULL;
textPtr->yScrollCmd = NULL;
textPtr->flags = 0;
/*
* Create the "sel" tag and the "current" and "insert" marks.
*/
textPtr->selTagPtr = CkTextCreateTag(textPtr, "sel");
textPtr->currentMarkPtr = CkTextSetMark(textPtr, "current", &startIndex);
textPtr->insertMarkPtr = CkTextSetMark(textPtr, "insert", &startIndex);
Ck_SetClass(new, "Text");
Ck_CreateEventHandler(textPtr->winPtr,
CK_EV_EXPOSE | CK_EV_DESTROY | CK_EV_MAP | CK_EV_FOCUSIN |
CK_EV_FOCUSOUT,
TextEventProc, (ClientData) textPtr);
Ck_CreateEventHandler(textPtr->winPtr, CK_EV_KEYPRESS,
CkTextBindProc, (ClientData) textPtr);
if (ConfigureText(interp, textPtr, argc-2, argv+2, 0) != TCL_OK) {
Ck_DestroyWindow(textPtr->winPtr);
return TCL_ERROR;
}
Tcl_SetObjResult( interp, Tcl_NewStringObj(textPtr->winPtr->pathName, -1));
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* TextWidgetCmd --
*
* This procedure is invoked to process the Tcl command
* that corresponds to a text widget. See the user
* documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*--------------------------------------------------------------
*/
static int
TextWidgetCmd(clientData, interp, argc, argv)
ClientData clientData; /* Information about text widget. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
register CkText *textPtr = (CkText *) clientData;
int result = TCL_OK;
size_t length;
int c;
CkTextIndex index1, index2;
char buf[256];
if (argc < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " option ?arg arg ...?\"", (char *) NULL);
return TCL_ERROR;
}
Ck_Preserve((ClientData) textPtr);
c = argv[1][0];
length = strlen(argv[1]);
if ((c == 'b') && (strncmp(argv[1], "bbox", length) == 0)) {
int x, y, width, height;
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " bbox index\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (CkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (CkTextCharBbox(textPtr, &index1, &x, &y, &width, &height) == 0) {
sprintf(buf, "%d %d %d %d", x, y, width, height);
Tcl_SetObjResult( interp, Tcl_NewStringObj( buf, -1));
}
} else if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
&& (length >= 2)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " cget option\"",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
result = Ck_ConfigureValue(interp, textPtr->winPtr, configSpecs,
(char *) textPtr, argv[2], 0);
} else if ((c == 'c') && (strncmp(argv[1], "compare", length) == 0)
&& (length >= 3)) {
int relation, value;
char *p;
if (argc != 5) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " compare index1 op index2\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if ((CkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK)
|| (CkTextGetIndex(interp, textPtr, argv[4], &index2)
!= TCL_OK)) {
result = TCL_ERROR;
goto done;
}
relation = CkTextIndexCmp(&index1, &index2);
p = argv[3];
if (p[0] == '<') {
value = (relation < 0);
if ((p[1] == '=') && (p[2] == 0)) {
value = (relation <= 0);
} else if (p[1] != 0) {
compareError:
Tcl_AppendResult(interp, "bad comparison operator \"",
argv[3], "\": must be <, <=, ==, >=, >, or !=",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
} else if (p[0] == '>') {
value = (relation > 0);
if ((p[1] == '=') && (p[2] == 0)) {
value = (relation >= 0);
} else if (p[1] != 0) {
goto compareError;
}
} else if ((p[0] == '=') && (p[1] == '=') && (p[2] == 0)) {
value = (relation == 0);
} else if ((p[0] == '!') && (p[1] == '=') && (p[2] == 0)) {
value = (relation != 0);
} else {
goto compareError;
}
Tcl_SetObjResult( interp, Tcl_NewStringObj((value) ? "1" : "0", -1));
} else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
&& (length >= 3)) {
if (argc == 2) {
result = Ck_ConfigureInfo(interp, textPtr->winPtr, configSpecs,
(char *) textPtr, (char *) NULL, 0);
} else if (argc == 3) {
result = Ck_ConfigureInfo(interp, textPtr->winPtr, configSpecs,
(char *) textPtr, argv[2], 0);
} else {
result = ConfigureText(interp, textPtr, argc-2, argv+2,
CK_CONFIG_ARGV_ONLY);
}
} else if ((c == 'd') && (strncmp(argv[1], "debug", length) == 0)
&& (length >= 3)) {
if (argc > 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " debug boolean\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (argc == 2) {
Tcl_SetObjResult(interp, Tcl_NewStringObj((ckBTreeDebug) ? "1" : "0", -1));
} else {
if (Tcl_GetBoolean(interp, argv[2], &ckBTreeDebug) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
ckTextDebug = ckBTreeDebug;
}
} else if ((c == 'd') && (strncmp(argv[1], "delete", length) == 0)
&& (length >= 3)) {
if ((argc != 3) && (argc != 4)) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " delete index1 ?index2?\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (textPtr->state == ckTextNormalUid) {
result = DeleteChars(textPtr, argv[2],
(argc == 4) ? argv[3] : (char *) NULL);
}
} else if ((c == 'd') && (strncmp(argv[1], "dlineinfo", length) == 0)
&& (length >= 2)) {
int x, y, width, height, base;
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " dlineinfo index\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (CkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (CkTextDLineInfo(textPtr, &index1, &x, &y, &width, &height, &base)
== 0) {
sprintf(buf, "%d %d %d %d %d", x, y, width, height, base);
Tcl_SetObjResult( interp, Tcl_NewStringObj( buf, -1));
}
} else if ((c == 'g') && (strncmp(argv[1], "get", length) == 0)) {
if ((argc != 3) && (argc != 4)) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " get index1 ?index2?\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
if (CkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (argc == 3) {
index2 = index1;
CkTextIndexForwChars(&index2, 1, &index2);
} else if (CkTextGetIndex(interp, textPtr, argv[3], &index2)
!= TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (CkTextIndexCmp(&index1, &index2) >= 0) {
goto done;
}
while (1) {
int offset, last, savedChar;
CkTextSegment *segPtr;
segPtr = CkTextIndexToSeg(&index1, &offset);
last = segPtr->size;
if (index1.linePtr == index2.linePtr) {
int last2;
if (index2.charIndex == index1.charIndex) {
break;
}
last2 = index2.charIndex - index1.charIndex + offset;
if (last2 < last) {
last = last2;
}
}
if (segPtr->typePtr == &ckTextCharType) {
savedChar = segPtr->body.chars[last];
segPtr->body.chars[last] = 0;
Tcl_AppendResult(interp, segPtr->body.chars + offset,
(char *) NULL);
segPtr->body.chars[last] = savedChar;
}
CkTextIndexForwChars(&index1, last-offset, &index1);
}
} else if ((c == 'i') && (strncmp(argv[1], "index", length) == 0)
&& (length >= 3)) {
if (argc != 3) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], " index index\"",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
if (CkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
CkTextPrintIndex(&index1, buf);
Tcl_SetObjResult( interp, Tcl_NewStringObj( buf, -1));
} else if ((c == 'i') && (strncmp(argv[1], "insert", length) == 0)
&& (length >= 3)) {
int i, j, numTags;
char **tagNames;
CkTextTag **oldTagArrayPtr;
if (argc < 4) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0],
" insert index chars ?tagList chars tagList ...?\"",
(char *) NULL);
result = TCL_ERROR;
goto done;
}
if (CkTextGetIndex(interp, textPtr, argv[2], &index1) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
if (textPtr->state == ckTextNormalUid) {
for (j = 3; j < argc; j += 2) {
InsertChars(textPtr, &index1, argv[j]);
if (argc > (j+1)) {
CkTextIndexForwChars(&index1, (int) strlen(argv[j]),
&index2);
oldTagArrayPtr = CkBTreeGetTags(&index1, &numTags);
if (oldTagArrayPtr != NULL) {
for (i = 0; i < numTags; i++) {
CkBTreeTag(&index1, &index2, oldTagArrayPtr[i], 0);
}
ckfree((char *) oldTagArrayPtr);
}
if (Tcl_SplitList(interp, argv[j+1], &numTags, &tagNames)
!= TCL_OK) {
result = TCL_ERROR;
goto done;
}
for (i = 0; i < numTags; i++) {
CkBTreeTag(&index1, &index2,
CkTextCreateTag(textPtr, tagNames[i]), 1);
}
ckfree((char *) tagNames);
index1 = index2;
}
}
}
} else if ((c == 'm') && (strncmp(argv[1], "mark", length) == 0)) {
result = CkTextMarkCmd(textPtr, interp, argc, argv);
} else if ((c == 's') && (strcmp(argv[1], "search") == 0)
&& (length >= 3)) {
result = TextSearchCmd(textPtr, interp, argc, argv);
} else if ((c == 's') && (strcmp(argv[1], "see") == 0) && (length >= 3)) {
result = CkTextSeeCmd(textPtr, interp, argc, argv);
} else if ((c == 't') && (strcmp(argv[1], "tag") == 0)) {
result = CkTextTagCmd(textPtr, interp, argc, argv);
#if 0
} else if ((c == 'w') && (strncmp(argv[1], "window", length) == 0)) {
result = CkTextWindowCmd(textPtr, interp, argc, argv);
#endif
} else if ((c == 'x') && (strncmp(argv[1], "xview", length) == 0)) {
result = CkTextXviewCmd(textPtr, interp, argc, argv);
} else if ((c == 'y') && (strncmp(argv[1], "yview", length) == 0)
&& (length >= 2)) {
result = CkTextYviewCmd(textPtr, interp, argc, argv);
} else {
Tcl_AppendResult(interp, "bad option \"", argv[1],
"\": must be bbox, cget, compare, configure, debug, delete, ",
"dlineinfo, get, index, insert, mark, scan, search, see, ",
"tag, window, xview, or yview",
(char *) NULL);
result = TCL_ERROR;
}
done:
Ck_Release((ClientData) textPtr);
return result;
}
/*
*----------------------------------------------------------------------
*
* DestroyText --
*
* This procedure is invoked by Ck_EventuallyFree or Ck_Release
* to clean up the internal structure of a text at a safe time
* (when no-one is using it anymore).
*
* Results:
* None.
*
* Side effects:
* Everything associated with the text is freed up.
*
*----------------------------------------------------------------------
*/
static void
DestroyText(clientData)
ClientData clientData; /* Info about text widget. */
{
register CkText *textPtr = (CkText *) clientData;
Tcl_HashSearch search;
Tcl_HashEntry *hPtr;
CkTextTag *tagPtr;
/*
* Free up all the stuff that requires special handling, then
* let Ck_FreeOptions handle all the standard option-related
* stuff. Special note: free up display-related information
* before deleting the B-tree, since display-related stuff
* may refer to stuff in the B-tree.
*/
CkTextFreeDInfo(textPtr);
CkBTreeDestroy(textPtr->tree);
for (hPtr = Tcl_FirstHashEntry(&textPtr->tagTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
tagPtr = (CkTextTag *) Tcl_GetHashValue(hPtr);
CkTextFreeTag(textPtr, tagPtr);
}
Tcl_DeleteHashTable(&textPtr->tagTable);
for (hPtr = Tcl_FirstHashEntry(&textPtr->markTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
ckfree((char *) Tcl_GetHashValue(hPtr));
}
Tcl_DeleteHashTable(&textPtr->markTable);
if (textPtr->tabArrayPtr != NULL) {
ckfree((char *) textPtr->tabArrayPtr);
}
if (textPtr->bindingTable != NULL) {
Ck_DeleteBindingTable(textPtr->bindingTable);
}
/*
* NOTE: do NOT free up selBorder, selBdString, or selFgColorPtr:
* they are duplicates of information in the "sel" tag, which was
* freed up as part of deleting the tags above.
*/
Ck_FreeOptions(configSpecs, (char *) textPtr, 0);
ckfree((char *) textPtr);
}
/*
*----------------------------------------------------------------------
*
* ConfigureText --
*
* This procedure is called to process an argv/argc list, plus
* the Ck option database, in order to configure (or
* reconfigure) a text widget.
*
* Results:
* The return value is a standard Tcl result. If TCL_ERROR is
* returned, then interp->result contains an error message.
*
* Side effects:
* Configuration information, such as text string, colors, font,
* etc. get set for textPtr; old resources get freed, if there
* were any.
*
*----------------------------------------------------------------------
*/
static int
ConfigureText(interp, textPtr, argc, argv, flags)
Tcl_Interp *interp; /* Used for error reporting. */
register CkText *textPtr; /* Information about widget; may or may
* not already have values for some fields. */
int argc; /* Number of valid entries in argv. */
char **argv; /* Arguments. */
int flags; /* Flags to pass to Ck_ConfigureWidget. */
{
if (Ck_ConfigureWidget(interp, textPtr->winPtr, configSpecs,
argc, argv, (char *) textPtr, flags) != TCL_OK) {
return TCL_ERROR;
}
/*
* A few other options also need special processing, such as parsing
* the geometry and setting the background from a 3-D border.
*/
if ((textPtr->state != ckTextNormalUid)
&& (textPtr->state != ckTextDisabledUid)) {
Tcl_AppendResult(interp, "bad state value \"", textPtr->state,
"\": must be normal or disabled", (char *) NULL);
textPtr->state = ckTextNormalUid;
return TCL_ERROR;
}
if ((textPtr->wrapMode != ckTextCharUid)
&& (textPtr->wrapMode != ckTextNoneUid)
&& (textPtr->wrapMode != ckTextWordUid)) {
Tcl_AppendResult(interp, "bad wrap mode \"", textPtr->wrapMode,
"\": must be char, none, or word", (char *) NULL);
textPtr->wrapMode = ckTextCharUid;
return TCL_ERROR;
}
/*
* Parse tab stops.
*/
if (textPtr->tabArrayPtr != NULL) {
ckfree((char *) textPtr->tabArrayPtr);
textPtr->tabArrayPtr = NULL;
}
if (textPtr->tabOptionString != NULL) {
textPtr->tabArrayPtr = CkTextGetTabs(interp, textPtr->winPtr,
textPtr->tabOptionString);
if (textPtr->tabArrayPtr == NULL) {
Tcl_AddErrorInfo(interp,"\n (while processing -tabs option)");
return TCL_ERROR;
}
}
/*
* Make sure that configuration options are properly mirrored
* between the widget record and the "sel" tags. NOTE: we don't
* have to free up information during the mirroring; old
* information was freed when it was replaced in the widget
* record.
*/
textPtr->selTagPtr->bg = textPtr->selBg;
textPtr->selTagPtr->fg = textPtr->selFg;
textPtr->selTagPtr->attr = textPtr->selAttr;
textPtr->selTagPtr->affectsDisplay = 0;
#if 0
/* ??? */
if ((textPtr->selTagPtr->border != NULL)
|| (textPtr->selTagPtr->bdString != NULL)
|| (textPtr->selTagPtr->reliefString != NULL)
|| (textPtr->selTagPtr->bgStipple != None)
|| (textPtr->selTagPtr->fgColor != NULL)
|| (textPtr->selTagPtr->fontPtr != None)
|| (textPtr->selTagPtr->fgStipple != None)
|| (textPtr->selTagPtr->justifyString != NULL)
|| (textPtr->selTagPtr->lMargin1String != NULL)
|| (textPtr->selTagPtr->lMargin2String != NULL)
|| (textPtr->selTagPtr->offsetString != NULL)
|| (textPtr->selTagPtr->overstrikeString != NULL)
|| (textPtr->selTagPtr->rMarginString != NULL)
|| (textPtr->selTagPtr->spacing1String != NULL)
|| (textPtr->selTagPtr->spacing2String != NULL)
|| (textPtr->selTagPtr->spacing3String != NULL)
|| (textPtr->selTagPtr->tabString != NULL)
|| (textPtr->selTagPtr->underlineString != NULL)
|| (textPtr->selTagPtr->wrapMode != NULL)) {
textPtr->selTagPtr->affectsDisplay = 1;
}
#endif
CkTextRedrawTag(textPtr, (CkTextIndex *) NULL, (CkTextIndex *) NULL,
textPtr->selTagPtr, 1);
/*
* Register the desired geometry for the window, and arrange for
* the window to be redisplayed.
*/
if (textPtr->width <= 0) {
textPtr->width = 1;
}
if (textPtr->height <= 0) {
textPtr->height = 1;
}
Ck_GeometryRequest(textPtr->winPtr, textPtr->width, textPtr->height);
CkTextRelayoutWindow(textPtr);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* TextEventProc --
*
* This procedure is invoked by the Ck dispatcher on
* structure changes to a text. For texts with 3D
* borders, this procedure is also invoked for exposures.
*
* Results:
* None.
*
* Side effects:
* When the window gets deleted, internal structures get
* cleaned up. When it gets exposed, it is redisplayed.
*
*--------------------------------------------------------------
*/
static void
TextEventProc(clientData, eventPtr)
ClientData clientData; /* Information about window. */
register CkEvent *eventPtr; /* Information about event. */
{
register CkText *textPtr = (CkText *) clientData;
CkWindow *winPtr = textPtr->winPtr;
CkTextIndex index, index2;
if (eventPtr->type == CK_EV_EXPOSE) {
if ((textPtr->prevWidth != winPtr->width)
|| (textPtr->prevHeight != winPtr->height)) {
CkTextRelayoutWindow(textPtr);
textPtr->prevWidth = winPtr->width;
textPtr->prevHeight = winPtr->height;
}
CkTextRedrawRegion(textPtr, 0, 0, winPtr->width, winPtr->height);
} else if (eventPtr->type == CK_EV_DESTROY) {
if (textPtr->winPtr != NULL) {
textPtr->winPtr = NULL;
Tcl_DeleteCommand(textPtr->interp,
Tcl_GetCommandName(textPtr->interp,
textPtr->widgetCmd));
}
Ck_EventuallyFree((ClientData) textPtr, (Ck_FreeProc *) DestroyText);
} else if ((eventPtr->type == CK_EV_FOCUSIN)
|| (eventPtr->type == CK_EV_FOCUSOUT)) {
if (eventPtr->type == CK_EV_FOCUSIN) {
textPtr->flags |= GOT_FOCUS;
} else {
textPtr->flags &= ~GOT_FOCUS;
}
CkTextMarkSegToIndex(textPtr, textPtr->insertMarkPtr, &index);
CkTextIndexForwChars(&index, 1, &index2);
CkTextChanged(textPtr, &index, &index2);
CkTextRedrawRegion(textPtr, 0, 0, winPtr->width,
winPtr->height);
}
}
/*
*----------------------------------------------------------------------
*
* TextCmdDeletedProc --
*
* This procedure is invoked when a widget command is deleted. If
* the widget isn't already in the process of being destroyed,
* this command destroys it.
*
* Results:
* None.
*
* Side effects:
* The widget is destroyed.
*
*----------------------------------------------------------------------
*/
static void
TextCmdDeletedProc(clientData)
ClientData clientData; /* Pointer to widget record for widget. */
{
CkText *textPtr = (CkText *) clientData;
CkWindow *winPtr = textPtr->winPtr;
/*
* This procedure could be invoked either because the window was
* destroyed and the command was then deleted (in which case ckwin
* is NULL) or because the command was deleted, and then this procedure
* destroys the widget.
*/
if (winPtr != NULL) {
textPtr->winPtr = NULL;
Ck_DestroyWindow(winPtr);
}
}
/*
*----------------------------------------------------------------------
*
* InsertChars --
*
* This procedure implements most of the functionality of the
* "insert" widget command.
*
* Results:
* None.
*
* Side effects:
* The characters in "string" get added to the text just before
* the character indicated by "indexPtr".
*
*----------------------------------------------------------------------
*/
static void
InsertChars(textPtr, indexPtr, string)
CkText *textPtr; /* Overall information about text widget. */
CkTextIndex *indexPtr; /* Where to insert new characters. May be
* modified and/or invalidated. */
char *string; /* Null-terminated string containing new
* information to add to text. */
{
int lineIndex;
/*
* Don't allow insertions on the last (dummy) line of the text.
*/
lineIndex = CkBTreeLineIndex(indexPtr->linePtr);
if (lineIndex == CkBTreeNumLines(textPtr->tree)) {
lineIndex--;
#if CK_USE_UTF
CkTextMakeByteIndex(textPtr->tree, lineIndex, 1000000, indexPtr);
#else
CkTextMakeIndex(textPtr->tree, lineIndex, 1000000, indexPtr);
#endif
}
/*
* Notify the display module that lines are about to change, then do
* the insertion.
*/
CkTextChanged(textPtr, indexPtr, indexPtr);
CkBTreeInsertChars(indexPtr, string);
/*
* Invalidate any selection retrievals in progress.
*/
textPtr->abortSelections = 1;
}
/*
*----------------------------------------------------------------------
*
* DeleteChars --
*
* This procedure implements most of the functionality of the
* "delete" widget command.
*
* Results:
* Returns a standard Tcl result, and leaves an error message
* in textPtr->interp if there is an error.
*
* Side effects:
* Characters get deleted from the text.
*
*----------------------------------------------------------------------
*/
static int
DeleteChars(textPtr, index1String, index2String)
CkText *textPtr; /* Overall information about text widget. */
char *index1String; /* String describing location of first
* character to delete. */
char *index2String; /* String describing location of last
* character to delete. NULL means just
* delete the one character given by
* index1String. */
{
int line1, line2, line, charIndex, resetView;
CkTextIndex index1, index2;
/*
* Parse the starting and stopping indices.
*/
if (CkTextGetIndex(textPtr->interp, textPtr, index1String, &index1)
!= TCL_OK) {
return TCL_ERROR;
}
if (index2String != NULL) {
if (CkTextGetIndex(textPtr->interp, textPtr, index2String, &index2)
!= TCL_OK) {
return TCL_ERROR;
}
} else {
index2 = index1;
CkTextIndexForwChars(&index2, 1, &index2);
}
/*
* Make sure there's really something to delete.
*/
if (CkTextIndexCmp(&index1, &index2) >= 0) {
return TCL_OK;
}
/*
* The code below is ugly, but it's needed to make sure there
* is always a dummy empty line at the end of the text. If the
* final newline of the file (just before the dummy line) is being
* deleted, then back up index to just before the newline. If
* there is a newline just before the first character being deleted,
* then back up the first index too, so that an even number of lines
* gets deleted. Furthermore, remove any tags that are present on
* the newline that isn't going to be deleted after all (this simulates
* deleting the newline and then adding a "clean" one back again).
*/
line1 = CkBTreeLineIndex(index1.linePtr);
line2 = CkBTreeLineIndex(index2.linePtr);
if (line2 == CkBTreeNumLines(textPtr->tree)) {
CkTextTag **arrayPtr;
int arraySize, i;
CkTextIndex oldIndex2;
oldIndex2 = index2;
CkTextIndexBackChars(&oldIndex2, 1, &index2);
line2--;
if ((index1.charIndex == 0) && (line1 != 0)) {
CkTextIndexBackChars(&index1, 1, &index1);
line1--;
}
arrayPtr = CkBTreeGetTags(&index2, &arraySize);
if (arrayPtr != NULL) {
for (i = 0; i < arraySize; i++) {
CkBTreeTag(&index2, &oldIndex2, arrayPtr[i], 0);
}
ckfree((char *) arrayPtr);
}
}
/*