tkScrollbar.c
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- /*
- * tkScrollbar.c --
- *
- * This module implements a scrollbar widgets for the Tk
- * toolkit. A scrollbar displays a slider and two arrows;
- * mouse clicks on features within the scrollbar cause
- * scrolling commands to be invoked.
- *
- * Copyright (c) 1990-1994 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: tkScrollbar.c,v 1.6 2002/08/05 04:30:40 dgp Exp $
- */
- #include "tkPort.h"
- #include "tkScrollbar.h"
- #include "default.h"
- /*
- * Custom option for handling "-orient"
- */
- static Tk_CustomOption orientOption = {
- (Tk_OptionParseProc *) TkOrientParseProc,
- TkOrientPrintProc,
- (ClientData) NULL
- };
- /*
- * Information used for argv parsing.
- */
- Tk_ConfigSpec tkpScrollbarConfigSpecs[] = {
- {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
- DEF_SCROLLBAR_ACTIVE_BG_COLOR, Tk_Offset(TkScrollbar, activeBorder),
- TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
- DEF_SCROLLBAR_ACTIVE_BG_MONO, Tk_Offset(TkScrollbar, activeBorder),
- TK_CONFIG_MONO_ONLY},
- {TK_CONFIG_RELIEF, "-activerelief", "activeRelief", "Relief",
- DEF_SCROLLBAR_ACTIVE_RELIEF, Tk_Offset(TkScrollbar, activeRelief), 0},
- {TK_CONFIG_BORDER, "-background", "background", "Background",
- DEF_SCROLLBAR_BG_COLOR, Tk_Offset(TkScrollbar, bgBorder),
- TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_BORDER, "-background", "background", "Background",
- DEF_SCROLLBAR_BG_MONO, Tk_Offset(TkScrollbar, bgBorder),
- TK_CONFIG_MONO_ONLY},
- {TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
- (char *) NULL, 0, 0},
- {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
- (char *) NULL, 0, 0},
- {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
- DEF_SCROLLBAR_BORDER_WIDTH, Tk_Offset(TkScrollbar, borderWidth), 0},
- {TK_CONFIG_STRING, "-command", "command", "Command",
- DEF_SCROLLBAR_COMMAND, Tk_Offset(TkScrollbar, command),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
- DEF_SCROLLBAR_CURSOR, Tk_Offset(TkScrollbar, cursor), TK_CONFIG_NULL_OK},
- {TK_CONFIG_PIXELS, "-elementborderwidth", "elementBorderWidth",
- "BorderWidth", DEF_SCROLLBAR_EL_BORDER_WIDTH,
- Tk_Offset(TkScrollbar, elementBorderWidth), 0},
- {TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
- "HighlightBackground", DEF_SCROLLBAR_HIGHLIGHT_BG,
- Tk_Offset(TkScrollbar, highlightBgColorPtr), 0},
- {TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
- DEF_SCROLLBAR_HIGHLIGHT,
- Tk_Offset(TkScrollbar, highlightColorPtr), 0},
- {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
- "HighlightThickness",
- DEF_SCROLLBAR_HIGHLIGHT_WIDTH, Tk_Offset(TkScrollbar, highlightWidth), 0},
- {TK_CONFIG_BOOLEAN, "-jump", "jump", "Jump",
- DEF_SCROLLBAR_JUMP, Tk_Offset(TkScrollbar, jump), 0},
- {TK_CONFIG_CUSTOM, "-orient", "orient", "Orient",
- DEF_SCROLLBAR_ORIENT, Tk_Offset(TkScrollbar, vertical), 0,
- &orientOption},
- {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
- DEF_SCROLLBAR_RELIEF, Tk_Offset(TkScrollbar, relief), 0},
- {TK_CONFIG_INT, "-repeatdelay", "repeatDelay", "RepeatDelay",
- DEF_SCROLLBAR_REPEAT_DELAY, Tk_Offset(TkScrollbar, repeatDelay), 0},
- {TK_CONFIG_INT, "-repeatinterval", "repeatInterval", "RepeatInterval",
- DEF_SCROLLBAR_REPEAT_INTERVAL, Tk_Offset(TkScrollbar, repeatInterval), 0},
- {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
- DEF_SCROLLBAR_TAKE_FOCUS, Tk_Offset(TkScrollbar, takeFocus),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_COLOR, "-troughcolor", "troughColor", "Background",
- DEF_SCROLLBAR_TROUGH_COLOR, Tk_Offset(TkScrollbar, troughColorPtr),
- TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_COLOR, "-troughcolor", "troughColor", "Background",
- DEF_SCROLLBAR_TROUGH_MONO, Tk_Offset(TkScrollbar, troughColorPtr),
- TK_CONFIG_MONO_ONLY},
- {TK_CONFIG_PIXELS, "-width", "width", "Width",
- DEF_SCROLLBAR_WIDTH, Tk_Offset(TkScrollbar, width), 0},
- {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, 0}
- };
- /*
- * Forward declarations for procedures defined later in this file:
- */
- static int ConfigureScrollbar _ANSI_ARGS_((Tcl_Interp *interp,
- TkScrollbar *scrollPtr, int argc, CONST char **argv,
- int flags));
- static void ScrollbarCmdDeletedProc _ANSI_ARGS_((
- ClientData clientData));
- static int ScrollbarWidgetCmd _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *, int argc, CONST char **argv));
- /*
- *--------------------------------------------------------------
- *
- * Tk_ScrollbarCmd --
- *
- * This procedure is invoked to process the "scrollbar" Tcl
- * command. See the user documentation for details on what
- * it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
- int
- Tk_ScrollbarCmd(clientData, interp, argc, argv)
- ClientData clientData; /* Main window associated with
- * interpreter. */
- Tcl_Interp *interp; /* Current interpreter. */
- int argc; /* Number of arguments. */
- CONST char **argv; /* Argument strings. */
- {
- Tk_Window tkwin = (Tk_Window) clientData;
- register TkScrollbar *scrollPtr;
- Tk_Window new;
- if (argc < 2) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " pathName ?options?"", (char *) NULL);
- return TCL_ERROR;
- }
- new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], (char *) NULL);
- if (new == NULL) {
- return TCL_ERROR;
- }
- Tk_SetClass(new, "Scrollbar");
- scrollPtr = TkpCreateScrollbar(new);
- Tk_SetClassProcs(new, &tkpScrollbarProcs, (ClientData) scrollPtr);
- /*
- * Initialize fields that won't be initialized by ConfigureScrollbar,
- * or which ConfigureScrollbar expects to have reasonable values
- * (e.g. resource pointers).
- */
- scrollPtr->tkwin = new;
- scrollPtr->display = Tk_Display(new);
- scrollPtr->interp = interp;
- scrollPtr->widgetCmd = Tcl_CreateCommand(interp,
- Tk_PathName(scrollPtr->tkwin), ScrollbarWidgetCmd,
- (ClientData) scrollPtr, ScrollbarCmdDeletedProc);
- scrollPtr->vertical = 0;
- scrollPtr->width = 0;
- scrollPtr->command = NULL;
- scrollPtr->commandSize = 0;
- scrollPtr->repeatDelay = 0;
- scrollPtr->repeatInterval = 0;
- scrollPtr->borderWidth = 0;
- scrollPtr->bgBorder = NULL;
- scrollPtr->activeBorder = NULL;
- scrollPtr->troughColorPtr = NULL;
- scrollPtr->relief = TK_RELIEF_FLAT;
- scrollPtr->highlightWidth = 0;
- scrollPtr->highlightBgColorPtr = NULL;
- scrollPtr->highlightColorPtr = NULL;
- scrollPtr->inset = 0;
- scrollPtr->elementBorderWidth = -1;
- scrollPtr->arrowLength = 0;
- scrollPtr->sliderFirst = 0;
- scrollPtr->sliderLast = 0;
- scrollPtr->activeField = 0;
- scrollPtr->activeRelief = TK_RELIEF_RAISED;
- scrollPtr->totalUnits = 0;
- scrollPtr->windowUnits = 0;
- scrollPtr->firstUnit = 0;
- scrollPtr->lastUnit = 0;
- scrollPtr->firstFraction = 0.0;
- scrollPtr->lastFraction = 0.0;
- scrollPtr->cursor = None;
- scrollPtr->takeFocus = NULL;
- scrollPtr->flags = 0;
- if (ConfigureScrollbar(interp, scrollPtr, argc-2, argv+2, 0) != TCL_OK) {
- Tk_DestroyWindow(scrollPtr->tkwin);
- return TCL_ERROR;
- }
- Tcl_SetResult(interp, Tk_PathName(scrollPtr->tkwin), TCL_STATIC);
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * ScrollbarWidgetCmd --
- *
- * This procedure is invoked to process the Tcl command
- * that corresponds to a widget managed by this module.
- * See the user documentation for details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
- static int
- ScrollbarWidgetCmd(clientData, interp, argc, argv)
- ClientData clientData; /* Information about scrollbar
- * widget. */
- Tcl_Interp *interp; /* Current interpreter. */
- int argc; /* Number of arguments. */
- CONST char **argv; /* Argument strings. */
- {
- register TkScrollbar *scrollPtr = (TkScrollbar *) clientData;
- int result = TCL_OK;
- size_t length;
- int c;
- if (argc < 2) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " option ?arg arg ...?"", (char *) NULL);
- return TCL_ERROR;
- }
- Tcl_Preserve((ClientData) scrollPtr);
- c = argv[1][0];
- length = strlen(argv[1]);
- if ((c == 'a') && (strncmp(argv[1], "activate", length) == 0)) {
- int oldActiveField;
- if (argc == 2) {
- switch (scrollPtr->activeField) {
- case TOP_ARROW:
- Tcl_SetResult(interp, "arrow1", TCL_STATIC);
- break;
- case SLIDER:
- Tcl_SetResult(interp, "slider", TCL_STATIC);
- break;
- case BOTTOM_ARROW:
- Tcl_SetResult(interp, "arrow2", TCL_STATIC);
- break;
- }
- goto done;
- }
- if (argc != 3) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " activate element"", (char *) NULL);
- goto error;
- }
- c = argv[2][0];
- length = strlen(argv[2]);
- oldActiveField = scrollPtr->activeField;
- if ((c == 'a') && (strcmp(argv[2], "arrow1") == 0)) {
- scrollPtr->activeField = TOP_ARROW;
- } else if ((c == 'a') && (strcmp(argv[2], "arrow2") == 0)) {
- scrollPtr->activeField = BOTTOM_ARROW;
- } else if ((c == 's') && (strncmp(argv[2], "slider", length) == 0)) {
- scrollPtr->activeField = SLIDER;
- } else {
- scrollPtr->activeField = OUTSIDE;
- }
- if (oldActiveField != scrollPtr->activeField) {
- TkScrollbarEventuallyRedraw(scrollPtr);
- }
- } 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);
- goto error;
- }
- result = Tk_ConfigureValue(interp, scrollPtr->tkwin,
- tkpScrollbarConfigSpecs, (char *) scrollPtr, argv[2], 0);
- } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
- && (length >= 2)) {
- if (argc == 2) {
- result = Tk_ConfigureInfo(interp, scrollPtr->tkwin,
- tkpScrollbarConfigSpecs, (char *) scrollPtr,
- (char *) NULL, 0);
- } else if (argc == 3) {
- result = Tk_ConfigureInfo(interp, scrollPtr->tkwin,
- tkpScrollbarConfigSpecs, (char *) scrollPtr, argv[2], 0);
- } else {
- result = ConfigureScrollbar(interp, scrollPtr, argc-2, argv+2,
- TK_CONFIG_ARGV_ONLY);
- }
- } else if ((c == 'd') && (strncmp(argv[1], "delta", length) == 0)) {
- int xDelta, yDelta, pixels, length;
- double fraction;
- char buf[TCL_DOUBLE_SPACE];
- if (argc != 4) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " delta xDelta yDelta"", (char *) NULL);
- goto error;
- }
- if ((Tcl_GetInt(interp, argv[2], &xDelta) != TCL_OK)
- || (Tcl_GetInt(interp, argv[3], &yDelta) != TCL_OK)) {
- goto error;
- }
- if (scrollPtr->vertical) {
- pixels = yDelta;
- length = Tk_Height(scrollPtr->tkwin) - 1
- - 2*(scrollPtr->arrowLength + scrollPtr->inset);
- } else {
- pixels = xDelta;
- length = Tk_Width(scrollPtr->tkwin) - 1
- - 2*(scrollPtr->arrowLength + scrollPtr->inset);
- }
- if (length == 0) {
- fraction = 0.0;
- } else {
- fraction = ((double) pixels / (double) length);
- }
- sprintf(buf, "%g", fraction);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- } else if ((c == 'f') && (strncmp(argv[1], "fraction", length) == 0)) {
- int x, y, pos, length;
- double fraction;
- char buf[TCL_DOUBLE_SPACE];
- if (argc != 4) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " fraction x y"", (char *) NULL);
- goto error;
- }
- if ((Tcl_GetInt(interp, argv[2], &x) != TCL_OK)
- || (Tcl_GetInt(interp, argv[3], &y) != TCL_OK)) {
- goto error;
- }
- if (scrollPtr->vertical) {
- pos = y - (scrollPtr->arrowLength + scrollPtr->inset);
- length = Tk_Height(scrollPtr->tkwin) - 1
- - 2*(scrollPtr->arrowLength + scrollPtr->inset);
- } else {
- pos = x - (scrollPtr->arrowLength + scrollPtr->inset);
- length = Tk_Width(scrollPtr->tkwin) - 1
- - 2*(scrollPtr->arrowLength + scrollPtr->inset);
- }
- if (length == 0) {
- fraction = 0.0;
- } else {
- fraction = ((double) pos / (double) length);
- }
- if (fraction < 0) {
- fraction = 0;
- } else if (fraction > 1.0) {
- fraction = 1.0;
- }
- sprintf(buf, "%g", fraction);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- } else if ((c == 'g') && (strncmp(argv[1], "get", length) == 0)) {
- if (argc != 2) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " get"", (char *) NULL);
- goto error;
- }
- if (scrollPtr->flags & NEW_STYLE_COMMANDS) {
- char first[TCL_DOUBLE_SPACE], last[TCL_DOUBLE_SPACE];
- Tcl_PrintDouble(interp, scrollPtr->firstFraction, first);
- Tcl_PrintDouble(interp, scrollPtr->lastFraction, last);
- Tcl_AppendResult(interp, first, " ", last, (char *) NULL);
- } else {
- char buf[TCL_INTEGER_SPACE * 4];
- sprintf(buf, "%d %d %d %d", scrollPtr->totalUnits,
- scrollPtr->windowUnits, scrollPtr->firstUnit,
- scrollPtr->lastUnit);
- Tcl_SetResult(interp, buf, TCL_VOLATILE);
- }
- } else if ((c == 'i') && (strncmp(argv[1], "identify", length) == 0)) {
- int x, y, thing;
- if (argc != 4) {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " identify x y"", (char *) NULL);
- goto error;
- }
- if ((Tcl_GetInt(interp, argv[2], &x) != TCL_OK)
- || (Tcl_GetInt(interp, argv[3], &y) != TCL_OK)) {
- goto error;
- }
- thing = TkpScrollbarPosition(scrollPtr, x,y);
- switch (thing) {
- case TOP_ARROW:
- Tcl_SetResult(interp, "arrow1", TCL_STATIC);
- break;
- case TOP_GAP:
- Tcl_SetResult(interp, "trough1", TCL_STATIC);
- break;
- case SLIDER:
- Tcl_SetResult(interp, "slider", TCL_STATIC);
- break;
- case BOTTOM_GAP:
- Tcl_SetResult(interp, "trough2", TCL_STATIC);
- break;
- case BOTTOM_ARROW:
- Tcl_SetResult(interp, "arrow2", TCL_STATIC);
- break;
- }
- } else if ((c == 's') && (strncmp(argv[1], "set", length) == 0)) {
- int totalUnits, windowUnits, firstUnit, lastUnit;
- if (argc == 4) {
- double first, last;
- if (Tcl_GetDouble(interp, argv[2], &first) != TCL_OK) {
- goto error;
- }
- if (Tcl_GetDouble(interp, argv[3], &last) != TCL_OK) {
- goto error;
- }
- if (first < 0) {
- scrollPtr->firstFraction = 0;
- } else if (first > 1.0) {
- scrollPtr->firstFraction = 1.0;
- } else {
- scrollPtr->firstFraction = first;
- }
- if (last < scrollPtr->firstFraction) {
- scrollPtr->lastFraction = scrollPtr->firstFraction;
- } else if (last > 1.0) {
- scrollPtr->lastFraction = 1.0;
- } else {
- scrollPtr->lastFraction = last;
- }
- scrollPtr->flags |= NEW_STYLE_COMMANDS;
- } else if (argc == 6) {
- if (Tcl_GetInt(interp, argv[2], &totalUnits) != TCL_OK) {
- goto error;
- }
- if (totalUnits < 0) {
- totalUnits = 0;
- }
- if (Tcl_GetInt(interp, argv[3], &windowUnits) != TCL_OK) {
- goto error;
- }
- if (windowUnits < 0) {
- windowUnits = 0;
- }
- if (Tcl_GetInt(interp, argv[4], &firstUnit) != TCL_OK) {
- goto error;
- }
- if (Tcl_GetInt(interp, argv[5], &lastUnit) != TCL_OK) {
- goto error;
- }
- if (totalUnits > 0) {
- if (lastUnit < firstUnit) {
- lastUnit = firstUnit;
- }
- } else {
- firstUnit = lastUnit = 0;
- }
- scrollPtr->totalUnits = totalUnits;
- scrollPtr->windowUnits = windowUnits;
- scrollPtr->firstUnit = firstUnit;
- scrollPtr->lastUnit = lastUnit;
- if (scrollPtr->totalUnits == 0) {
- scrollPtr->firstFraction = 0.0;
- scrollPtr->lastFraction = 1.0;
- } else {
- scrollPtr->firstFraction = ((double) firstUnit)/totalUnits;
- scrollPtr->lastFraction = ((double) (lastUnit+1))/totalUnits;
- }
- scrollPtr->flags &= ~NEW_STYLE_COMMANDS;
- } else {
- Tcl_AppendResult(interp, "wrong # args: should be "",
- argv[0], " set firstFraction lastFraction" or "",
- argv[0],
- " set totalUnits windowUnits firstUnit lastUnit"",
- (char *) NULL);
- goto error;
- }
- TkpComputeScrollbarGeometry(scrollPtr);
- TkScrollbarEventuallyRedraw(scrollPtr);
- } else {
- Tcl_AppendResult(interp, "bad option "", argv[1],
- "": must be activate, cget, configure, delta, fraction, ",
- "get, identify, or set", (char *) NULL);
- goto error;
- }
- done:
- Tcl_Release((ClientData) scrollPtr);
- return result;
- error:
- Tcl_Release((ClientData) scrollPtr);
- return TCL_ERROR;
- }
- /*
- *----------------------------------------------------------------------
- *
- * ConfigureScrollbar --
- *
- * This procedure is called to process an argv/argc list, plus
- * the Tk option database, in order to configure (or
- * reconfigure) a scrollbar widget.
- *
- * Results:
- * The return value is a standard Tcl result. If TCL_ERROR is
- * returned, then the interp's result contains an error message.
- *
- * Side effects:
- * Configuration information, such as colors, border width,
- * etc. get set for scrollPtr; old resources get freed,
- * if there were any.
- *
- *----------------------------------------------------------------------
- */
- static int
- ConfigureScrollbar(interp, scrollPtr, argc, argv, flags)
- Tcl_Interp *interp; /* Used for error reporting. */
- register TkScrollbar *scrollPtr; /* Information about widget; may or
- * may not already have values for
- * some fields. */
- int argc; /* Number of valid entries in argv. */
- CONST char **argv; /* Arguments. */
- int flags; /* Flags to pass to
- * Tk_ConfigureWidget. */
- {
- if (Tk_ConfigureWidget(interp, scrollPtr->tkwin, tkpScrollbarConfigSpecs,
- argc, argv, (char *) scrollPtr, flags) != TCL_OK) {
- return TCL_ERROR;
- }
- /*
- * A few options need special processing, such as setting the
- * background from a 3-D border.
- */
- if (scrollPtr->command != NULL) {
- scrollPtr->commandSize = strlen(scrollPtr->command);
- } else {
- scrollPtr->commandSize = 0;
- }
- /*
- * Configure platform specific options.
- */
- TkpConfigureScrollbar(scrollPtr);
- /*
- * Register the desired geometry for the window (leave enough space
- * for the two arrows plus a minimum-size slider, plus border around
- * the whole window, if any). Then arrange for the window to be
- * redisplayed.
- */
- TkpComputeScrollbarGeometry(scrollPtr);
- TkScrollbarEventuallyRedraw(scrollPtr);
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * TkScrollbarEventProc --
- *
- * This procedure is invoked by the Tk dispatcher for various
- * events on scrollbars.
- *
- * Results:
- * None.
- *
- * Side effects:
- * When the window gets deleted, internal structures get
- * cleaned up. When it gets exposed, it is redisplayed.
- *
- *--------------------------------------------------------------
- */
- void
- TkScrollbarEventProc(clientData, eventPtr)
- ClientData clientData; /* Information about window. */
- XEvent *eventPtr; /* Information about event. */
- {
- TkScrollbar *scrollPtr = (TkScrollbar *) clientData;
- if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) {
- TkScrollbarEventuallyRedraw(scrollPtr);
- } else if (eventPtr->type == DestroyNotify) {
- TkpDestroyScrollbar(scrollPtr);
- if (scrollPtr->tkwin != NULL) {
- scrollPtr->tkwin = NULL;
- Tcl_DeleteCommandFromToken(scrollPtr->interp,
- scrollPtr->widgetCmd);
- }
- if (scrollPtr->flags & REDRAW_PENDING) {
- Tcl_CancelIdleCall(TkpDisplayScrollbar, (ClientData) scrollPtr);
- }
- /*
- * Free up all the stuff that requires special handling, then
- * let Tk_FreeOptions handle all the standard option-related
- * stuff.
- */
-
- Tk_FreeOptions(tkpScrollbarConfigSpecs, (char *) scrollPtr,
- scrollPtr->display, 0);
- Tcl_EventuallyFree((ClientData) scrollPtr, TCL_DYNAMIC);
- } else if (eventPtr->type == ConfigureNotify) {
- TkpComputeScrollbarGeometry(scrollPtr);
- TkScrollbarEventuallyRedraw(scrollPtr);
- } else if (eventPtr->type == FocusIn) {
- if (eventPtr->xfocus.detail != NotifyInferior) {
- scrollPtr->flags |= GOT_FOCUS;
- if (scrollPtr->highlightWidth > 0) {
- TkScrollbarEventuallyRedraw(scrollPtr);
- }
- }
- } else if (eventPtr->type == FocusOut) {
- if (eventPtr->xfocus.detail != NotifyInferior) {
- scrollPtr->flags &= ~GOT_FOCUS;
- if (scrollPtr->highlightWidth > 0) {
- TkScrollbarEventuallyRedraw(scrollPtr);
- }
- }
- }
- }
- /*
- *----------------------------------------------------------------------
- *
- * ScrollbarCmdDeletedProc --
- *
- * 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
- ScrollbarCmdDeletedProc(clientData)
- ClientData clientData; /* Pointer to widget record for widget. */
- {
- TkScrollbar *scrollPtr = (TkScrollbar *) clientData;
- Tk_Window tkwin = scrollPtr->tkwin;
- /*
- * This procedure could be invoked either because the window was
- * destroyed and the command was then deleted (in which case tkwin
- * is NULL) or because the command was deleted, and then this procedure
- * destroys the widget.
- */
- if (tkwin != NULL) {
- scrollPtr->tkwin = NULL;
- Tk_DestroyWindow(tkwin);
- }
- }
- /*
- *--------------------------------------------------------------
- *
- * TkScrollbarEventuallyRedraw --
- *
- * Arrange for one or more of the fields of a scrollbar
- * to be redrawn.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
- void
- TkScrollbarEventuallyRedraw(scrollPtr)
- register TkScrollbar *scrollPtr; /* Information about widget. */
- {
- if ((scrollPtr->tkwin == NULL) || (!Tk_IsMapped(scrollPtr->tkwin))) {
- return;
- }
- if ((scrollPtr->flags & REDRAW_PENDING) == 0) {
- Tcl_DoWhenIdle(TkpDisplayScrollbar, (ClientData) scrollPtr);
- scrollPtr->flags |= REDRAW_PENDING;
- }
- }