1433 lines
42 KiB
C
1433 lines
42 KiB
C
/*
|
||
* tkTextTag.c --
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*
|
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* This module implements the "tag" subcommand of the widget command
|
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* for text widgets, plus most of the other high-level functions
|
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* related to tags.
|
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*
|
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* Copyright (c) 1992-1994 The Regents of the University of California.
|
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* Copyright (c) 1994-1995 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
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*
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* SCCS: @(#) tkTextTag.c 1.39 97/02/07 13:51:52
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*/
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|
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#include "default.h"
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#include "tkPort.h"
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#include "tk.h"
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#include "tkText.h"
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/*
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* Information used for parsing tag configuration information:
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*/
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static Tk_ConfigSpec tagConfigSpecs[] = {
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{TK_CONFIG_BORDER, "-background", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, border), TK_CONFIG_NULL_OK},
|
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{TK_CONFIG_BITMAP, "-bgstipple", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, bgStipple), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-borderwidth", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-borderwidth", (char *) NULL, (char *) NULL,
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#endif
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"0", Tk_Offset(TkTextTag, bdString),
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TK_CONFIG_DONT_SET_DEFAULT|TK_CONFIG_NULL_OK},
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{TK_CONFIG_BITMAP, "-fgstipple", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, fgStipple), TK_CONFIG_NULL_OK},
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{TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, tkfont), TK_CONFIG_NULL_OK},
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{TK_CONFIG_COLOR, "-foreground", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, fgColor), TK_CONFIG_NULL_OK},
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{TK_CONFIG_STRING, "-justify", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, justifyString), TK_CONFIG_NULL_OK},
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||
#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-lmargin1", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-lmargin1", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, lMargin1String), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-lmargin2", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-lmargin2", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, lMargin2String), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-offset", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-offset", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, offsetString), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SBOOLEAN, "-overstrike", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-overstrike", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, overstrikeString),
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TK_CONFIG_NULL_OK},
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{TK_CONFIG_STRING, "-relief", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, reliefString), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-rmargin", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-rmargin", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, rMarginString), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-spacing1", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-spacing1", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, spacing1String), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-spacing2", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-spacing2", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, spacing2String), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SINT, "-spacing3", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-spacing3", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, spacing3String), TK_CONFIG_NULL_OK},
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{TK_CONFIG_STRING, "-tabs", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, tabString), TK_CONFIG_NULL_OK},
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#ifdef SCM_CODE
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{TK_CONFIG_SBOOLEAN, "-underline", (char *) NULL, (char *) NULL,
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#else
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{TK_CONFIG_STRING, "-underline", (char *) NULL, (char *) NULL,
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#endif
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(char *) NULL, Tk_Offset(TkTextTag, underlineString),
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TK_CONFIG_NULL_OK},
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{TK_CONFIG_UID, "-wrap", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TkTextTag, wrapMode),
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TK_CONFIG_NULL_OK},
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{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
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(char *) NULL, 0, 0}
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};
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/*
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* Forward declarations for procedures defined later in this file:
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*/
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static void ChangeTagPriority _ANSI_ARGS_((TkText *textPtr,
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TkTextTag *tagPtr, int prio));
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static TkTextTag * FindTag _ANSI_ARGS_((Tcl_Interp *interp,
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TkText *textPtr, char *tagName));
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static void SortTags _ANSI_ARGS_((int numTags,
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TkTextTag **tagArrayPtr));
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static int TagSortProc _ANSI_ARGS_((CONST VOID *first,
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CONST VOID *second));
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/*
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*--------------------------------------------------------------
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*
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* TkTextTagCmd --
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*
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* This procedure is invoked to process the "tag" options of
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* the widget command for text widgets. See the user documentation
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* for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*--------------------------------------------------------------
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*/
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int
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TkTextTagCmd(textPtr, interp, argc, argv)
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register TkText *textPtr; /* Information about text widget. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. Someone else has already
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* parsed this command enough to know that
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* argv[1] is "tag". */
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{
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int c, i, addTag;
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size_t length;
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char *fullOption;
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register TkTextTag *tagPtr;
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TkTextIndex first, last, index1, index2;
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if (argc < 3) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " tag option ?arg arg ...?\"", (char *) NULL);
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return TCL_ERROR;
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}
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c = argv[2][0];
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length = strlen(argv[2]);
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if ((c == 'a') && (strncmp(argv[2], "add", length) == 0)) {
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fullOption = "add";
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addTag = 1;
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addAndRemove:
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if (argc < 5) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " tag ", fullOption,
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" tagName index1 ?index2 index1 index2 ...?\"",
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(char *) NULL);
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return TCL_ERROR;
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}
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tagPtr = TkTextCreateTag(textPtr, argv[3]);
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for (i = 4; i < argc; i += 2) {
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if (TkTextGetIndex(interp, textPtr, argv[i], &index1) != TCL_OK) {
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return TCL_ERROR;
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}
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if (argc > (i+1)) {
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if (TkTextGetIndex(interp, textPtr, argv[i+1], &index2)
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!= TCL_OK) {
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return TCL_ERROR;
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}
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if (TkTextIndexCmp(&index1, &index2) >= 0) {
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return TCL_OK;
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}
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} else {
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index2 = index1;
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TkTextIndexForwChars(&index2, 1, &index2);
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}
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if (tagPtr->affectsDisplay) {
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TkTextRedrawTag(textPtr, &index1, &index2, tagPtr, !addTag);
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} else {
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/*
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* Still need to trigger enter/leave events on tags that
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* have changed.
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*/
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TkTextEventuallyRepick(textPtr);
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}
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TkBTreeTag(&index1, &index2, tagPtr, addTag);
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/*
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* If the tag is "sel" then grab the selection if we're supposed
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* to export it and don't already have it. Also, invalidate
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* partially-completed selection retrievals.
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*/
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if (tagPtr == textPtr->selTagPtr) {
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if (addTag && textPtr->exportSelection
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&& !(textPtr->flags & GOT_SELECTION)) {
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Tk_OwnSelection(textPtr->tkwin, XA_PRIMARY,
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TkTextLostSelection, (ClientData) textPtr);
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textPtr->flags |= GOT_SELECTION;
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}
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textPtr->abortSelections = 1;
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}
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}
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} else if ((c == 'b') && (strncmp(argv[2], "bind", length) == 0)) {
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if ((argc < 4) || (argc > 6)) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " tag bind tagName ?sequence? ?command?\"",
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(char *) NULL);
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return TCL_ERROR;
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}
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tagPtr = TkTextCreateTag(textPtr, argv[3]);
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/*
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* Make a binding table if the widget doesn't already have
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* one.
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*/
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if (textPtr->bindingTable == NULL) {
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textPtr->bindingTable = Tk_CreateBindingTable(interp);
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}
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if (argc == 6) {
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int append = 0;
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unsigned long mask;
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if (argv[5][0] == 0) {
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return Tk_DeleteBinding(interp, textPtr->bindingTable,
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(ClientData) tagPtr, argv[4]);
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}
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#ifndef SCM_CODE
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if (argv[5][0] == '+') {
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argv[5]++;
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append = 1;
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}
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#endif
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#ifndef SCM_CODE
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mask = Tk_CreateBinding(interp, textPtr->bindingTable,
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(ClientData) tagPtr, argv[4], argv[5], append);
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#else
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mask = Tk_CreateBinding(interp, textPtr->bindingTable,
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(ClientData) tagPtr, argv[4], argv[5], argv[0], argv[3]);
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#endif
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if (mask == 0) {
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return TCL_ERROR;
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}
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if (mask & (unsigned) ~(ButtonMotionMask|Button1MotionMask
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|Button2MotionMask|Button3MotionMask|Button4MotionMask
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|Button5MotionMask|ButtonPressMask|ButtonReleaseMask
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|EnterWindowMask|LeaveWindowMask|KeyPressMask
|
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|KeyReleaseMask|PointerMotionMask|VirtualEventMask)) {
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Tk_DeleteBinding(interp, textPtr->bindingTable,
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(ClientData) tagPtr, argv[4]);
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Tcl_ResetResult(interp);
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Tcl_AppendResult(interp, "requested illegal events; ",
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"only key, button, motion, enter, leave, and virtual ",
|
||
"events may be used", (char *) NULL);
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return TCL_ERROR;
|
||
}
|
||
} else if (argc == 5) {
|
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char *command;
|
||
|
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command = Tk_GetBinding(interp, textPtr->bindingTable,
|
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(ClientData) tagPtr, argv[4]);
|
||
if (command == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
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interp->result = command;
|
||
} else {
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Tk_GetAllBindings(interp, textPtr->bindingTable,
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(ClientData) tagPtr);
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}
|
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} else if ((c == 'c') && (strncmp(argv[2], "cget", length) == 0)
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||
&& (length >= 2)) {
|
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if (argc != 5) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " tag cget tagName option\"",
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||
(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);
|
||
}
|
||
TkBTreeTag(TkTextMakeIndex(textPtr->tree, 0, 0, &first),
|
||
TkTextMakeIndex(textPtr->tree,
|
||
TkBTreeNumLines(textPtr->tree), 0, &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);
|
||
#ifdef SCM_CODE
|
||
Tcl_AppendResult(interp, "(", NULL);
|
||
for (i = 0; i < arraySize; i++) {
|
||
tagPtr = arrayPtr[i];
|
||
Tcl_AppendResult(interp, " \"", tagPtr->name, "\"", NULL);
|
||
}
|
||
Tcl_AppendResult(interp, ")", NULL);
|
||
#else
|
||
for (i = 0; i < arraySize; i++) {
|
||
tagPtr = arrayPtr[i];
|
||
Tcl_AppendElement(interp, tagPtr->name);
|
||
}
|
||
#endif
|
||
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;
|
||
}
|
||
TkTextMakeIndex(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.charIndex;
|
||
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) {
|
||
TkTextMakeIndex(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);
|
||
TkTextMakeIndex(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;
|
||
}
|
||
TkTextMakeIndex(textPtr->tree, 0, 0, &first);
|
||
TkTextMakeIndex(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 interp->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);
|
||
}
|
||
}
|