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- /*
- * tkMenubutton.c --
- *
- * This module implements button-like widgets that are used
- * to invoke pull-down menus.
- *
- * 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.
- *
- * SCCS: @(#) tkMenubutton.c 1.94 97/07/31 09:10:37
- */
-
- #include "tkMenubutton.h"
- #include "tkPort.h"
- #include "default.h"
-
- /*
- * Uids internal to menubuttons.
- */
-
- static Tk_Uid aboveUid = NULL;
- static Tk_Uid belowUid = NULL;
- static Tk_Uid leftUid = NULL;
- static Tk_Uid rightUid = NULL;
- static Tk_Uid flushUid = NULL;
-
- /*
- * Information used for parsing configuration specs:
- */
-
- static Tk_ConfigSpec configSpecs[] = {
- {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
- DEF_MENUBUTTON_ACTIVE_BG_COLOR, Tk_Offset(TkMenuButton, activeBorder),
- TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
- DEF_MENUBUTTON_ACTIVE_BG_MONO, Tk_Offset(TkMenuButton, activeBorder),
- TK_CONFIG_MONO_ONLY},
- {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
- DEF_MENUBUTTON_ACTIVE_FG_COLOR, Tk_Offset(TkMenuButton, activeFg),
- TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
- DEF_MENUBUTTON_ACTIVE_FG_MONO, Tk_Offset(TkMenuButton, activeFg),
- TK_CONFIG_MONO_ONLY},
- {TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",
- DEF_MENUBUTTON_ANCHOR, Tk_Offset(TkMenuButton, anchor), 0},
- {TK_CONFIG_BORDER, "-background", "background", "Background",
- DEF_MENUBUTTON_BG_COLOR, Tk_Offset(TkMenuButton, normalBorder),
- TK_CONFIG_COLOR_ONLY},
- {TK_CONFIG_BORDER, "-background", "background", "Background",
- DEF_MENUBUTTON_BG_MONO, Tk_Offset(TkMenuButton, normalBorder),
- 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_BITMAP, "-bitmap", "bitmap", "Bitmap",
- DEF_MENUBUTTON_BITMAP, Tk_Offset(TkMenuButton, bitmap),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
- DEF_MENUBUTTON_BORDER_WIDTH, Tk_Offset(TkMenuButton, borderWidth), 0},
- {TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
- DEF_MENUBUTTON_CURSOR, Tk_Offset(TkMenuButton, cursor),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_UID, "-direction", "direction", "Direction",
- DEF_MENUBUTTON_DIRECTION, Tk_Offset(TkMenuButton, direction),
- 0},
- {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
- "DisabledForeground", DEF_MENUBUTTON_DISABLED_FG_COLOR,
- Tk_Offset(TkMenuButton, disabledFg),
- TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK},
- {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
- "DisabledForeground", DEF_MENUBUTTON_DISABLED_FG_MONO,
- Tk_Offset(TkMenuButton, disabledFg),
- TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK},
- {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
- (char *) NULL, 0, 0},
- {TK_CONFIG_FONT, "-font", "font", "Font",
- DEF_MENUBUTTON_FONT, Tk_Offset(TkMenuButton, tkfont), 0},
- {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
- DEF_MENUBUTTON_FG, Tk_Offset(TkMenuButton, normalFg), 0},
- {TK_CONFIG_STRING, "-height", "height", "Height",
- DEF_MENUBUTTON_HEIGHT, Tk_Offset(TkMenuButton, heightString), 0},
- {TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
- "HighlightBackground", DEF_MENUBUTTON_HIGHLIGHT_BG,
- Tk_Offset(TkMenuButton, highlightBgColorPtr), 0},
- {TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
- DEF_MENUBUTTON_HIGHLIGHT, Tk_Offset(TkMenuButton, highlightColorPtr),
- 0},
- {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
- "HighlightThickness", DEF_MENUBUTTON_HIGHLIGHT_WIDTH,
- Tk_Offset(TkMenuButton, highlightWidth), 0},
- {TK_CONFIG_STRING, "-image", "image", "Image",
- DEF_MENUBUTTON_IMAGE, Tk_Offset(TkMenuButton, imageString),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_BOOLEAN, "-indicatoron", "indicatorOn", "IndicatorOn",
- DEF_MENUBUTTON_INDICATOR, Tk_Offset(TkMenuButton, indicatorOn), 0},
- {TK_CONFIG_JUSTIFY, "-justify", "justify", "Justify",
- DEF_MENUBUTTON_JUSTIFY, Tk_Offset(TkMenuButton, justify), 0},
- {TK_CONFIG_STRING, "-menu", "menu", "Menu",
- DEF_MENUBUTTON_MENU, Tk_Offset(TkMenuButton, menuName),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
- DEF_MENUBUTTON_PADX, Tk_Offset(TkMenuButton, padX), 0},
- {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
- DEF_MENUBUTTON_PADY, Tk_Offset(TkMenuButton, padY), 0},
- {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
- DEF_MENUBUTTON_RELIEF, Tk_Offset(TkMenuButton, relief), 0},
- {TK_CONFIG_UID, "-state", "state", "State",
- DEF_MENUBUTTON_STATE, Tk_Offset(TkMenuButton, state), 0},
- {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
- DEF_MENUBUTTON_TAKE_FOCUS, Tk_Offset(TkMenuButton, takeFocus),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_STRING, "-text", "text", "Text",
- DEF_MENUBUTTON_TEXT, Tk_Offset(TkMenuButton, text), 0},
- {TK_CONFIG_STRING, "-textvariable", "textVariable", "Variable",
- DEF_MENUBUTTON_TEXT_VARIABLE, Tk_Offset(TkMenuButton, textVarName),
- TK_CONFIG_NULL_OK},
- {TK_CONFIG_INT, "-underline", "underline", "Underline",
- DEF_MENUBUTTON_UNDERLINE, Tk_Offset(TkMenuButton, underline), 0},
- {TK_CONFIG_STRING, "-width", "width", "Width",
- DEF_MENUBUTTON_WIDTH, Tk_Offset(TkMenuButton, widthString), 0},
- {TK_CONFIG_PIXELS, "-wraplength", "wrapLength", "WrapLength",
- DEF_MENUBUTTON_WRAP_LENGTH, Tk_Offset(TkMenuButton, wrapLength), 0},
- {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, 0}
- };
-
- /*
- * Forward declarations for procedures defined later in this file:
- */
-
- static void MenuButtonCmdDeletedProc _ANSI_ARGS_((
- ClientData clientData));
- static void MenuButtonEventProc _ANSI_ARGS_((ClientData clientData,
- XEvent *eventPtr));
- static void MenuButtonImageProc _ANSI_ARGS_((ClientData clientData,
- int x, int y, int width, int height, int imgWidth,
- int imgHeight));
- static char * MenuButtonTextVarProc _ANSI_ARGS_((
- ClientData clientData, Tcl_Interp *interp,
- char *name1, char *name2, int flags));
- static int MenuButtonWidgetCmd _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, int argc, char **argv));
- static int ConfigureMenuButton _ANSI_ARGS_((Tcl_Interp *interp,
- TkMenuButton *mbPtr, int argc, char **argv,
- int flags));
- static void DestroyMenuButton _ANSI_ARGS_((char *memPtr));
-
- /*
- *--------------------------------------------------------------
- *
- * Tk_MenubuttonCmd --
- *
- * This procedure is invoked to process the "button", "label",
- * "radiobutton", and "checkbutton" Tcl commands. See the
- * user documentation for details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
-
- int
- Tk_MenubuttonCmd(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. */
- {
- register TkMenuButton *mbPtr;
- Tk_Window tkwin = (Tk_Window) clientData;
- Tk_Window new;
-
- if (argc < 2) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " pathName ?options?\"", (char *) NULL);
- return TCL_ERROR;
- }
-
- /*
- * Create the new window.
- */
-
- new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], (char *) NULL);
- if (new == NULL) {
- return TCL_ERROR;
- }
-
- Tk_SetClass(new, "Menubutton");
- mbPtr = TkpCreateMenuButton(new);
-
- TkSetClassProcs(new, &tkpMenubuttonClass, (ClientData) mbPtr);
-
- /*
- * Initialize the data structure for the button.
- */
-
- mbPtr->tkwin = new;
- mbPtr->display = Tk_Display (new);
- mbPtr->interp = interp;
- mbPtr->widgetCmd = Tcl_CreateCommand(interp, Tk_PathName(mbPtr->tkwin),
- MenuButtonWidgetCmd, (ClientData) mbPtr, MenuButtonCmdDeletedProc);
- mbPtr->menuName = NULL;
- mbPtr->text = NULL;
- mbPtr->underline = -1;
- mbPtr->textVarName = NULL;
- mbPtr->bitmap = None;
- mbPtr->imageString = NULL;
- mbPtr->image = NULL;
- mbPtr->state = tkNormalUid;
- mbPtr->normalBorder = NULL;
- mbPtr->activeBorder = NULL;
- mbPtr->borderWidth = 0;
- mbPtr->relief = TK_RELIEF_FLAT;
- mbPtr->highlightWidth = 0;
- mbPtr->highlightBgColorPtr = NULL;
- mbPtr->highlightColorPtr = NULL;
- mbPtr->inset = 0;
- mbPtr->tkfont = NULL;
- mbPtr->normalFg = NULL;
- mbPtr->activeFg = NULL;
- mbPtr->disabledFg = NULL;
- mbPtr->normalTextGC = None;
- mbPtr->activeTextGC = None;
- mbPtr->gray = None;
- mbPtr->disabledGC = None;
- mbPtr->leftBearing = 0;
- mbPtr->rightBearing = 0;
- mbPtr->widthString = NULL;
- mbPtr->heightString = NULL;
- mbPtr->width = 0;
- mbPtr->width = 0;
- mbPtr->wrapLength = 0;
- mbPtr->padX = 0;
- mbPtr->padY = 0;
- mbPtr->anchor = TK_ANCHOR_CENTER;
- mbPtr->justify = TK_JUSTIFY_CENTER;
- mbPtr->textLayout = NULL;
- mbPtr->indicatorOn = 0;
- mbPtr->indicatorWidth = 0;
- mbPtr->indicatorHeight = 0;
- mbPtr->cursor = None;
- mbPtr->takeFocus = NULL;
- mbPtr->flags = 0;
- if (aboveUid == NULL) {
- aboveUid = Tk_GetUid("above");
- belowUid = Tk_GetUid("below");
- leftUid = Tk_GetUid("left");
- rightUid = Tk_GetUid("right");
- flushUid = Tk_GetUid("flush");
- }
- mbPtr->direction = flushUid;
-
- Tk_CreateEventHandler(mbPtr->tkwin,
- ExposureMask|StructureNotifyMask|FocusChangeMask,
- MenuButtonEventProc, (ClientData) mbPtr);
- if (ConfigureMenuButton(interp, mbPtr, argc-2, argv+2, 0) != TCL_OK) {
- Tk_DestroyWindow(mbPtr->tkwin);
- return TCL_ERROR;
- }
-
- interp->result = Tk_PathName(mbPtr->tkwin);
- return TCL_OK;
- }
-
- /*
- *--------------------------------------------------------------
- *
- * MenuButtonWidgetCmd --
- *
- * 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
- MenuButtonWidgetCmd(clientData, interp, argc, argv)
- ClientData clientData; /* Information about button widget. */
- Tcl_Interp *interp; /* Current interpreter. */
- int argc; /* Number of arguments. */
- char **argv; /* Argument strings. */
- {
- register TkMenuButton *mbPtr = (TkMenuButton *) clientData;
- int result;
- 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) mbPtr);
- c = argv[1][0];
- length = strlen(argv[1]);
- 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;
- } else {
- result = Tk_ConfigureValue(interp, mbPtr->tkwin, configSpecs,
- (char *) mbPtr, argv[2], 0);
- }
- } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
- && (length >= 2)) {
- if (argc == 2) {
- result = Tk_ConfigureInfo(interp, mbPtr->tkwin, configSpecs,
- (char *) mbPtr, (char *) NULL, 0);
- } else if (argc == 3) {
- result = Tk_ConfigureInfo(interp, mbPtr->tkwin, configSpecs,
- (char *) mbPtr, argv[2], 0);
- } else {
- result = ConfigureMenuButton(interp, mbPtr, argc-2, argv+2,
- TK_CONFIG_ARGV_ONLY);
- }
- } else {
- Tcl_AppendResult(interp, "bad option \"", argv[1],
- "\": must be cget or configure",
- (char *) NULL);
- result = TCL_ERROR;
- }
- Tcl_Release((ClientData) mbPtr);
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * DestroyMenuButton --
- *
- * This procedure is invoked to recycle all of the resources
- * associated with a button widget. It is invoked as a
- * when-idle handler in order to make sure that there is no
- * other use of the button pending at the time of the deletion.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Everything associated with the widget is freed up.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- DestroyMenuButton(memPtr)
- char *memPtr; /* Info about button widget. */
- {
- register TkMenuButton *mbPtr = (TkMenuButton *) memPtr;
-
- /*
- * Free up all the stuff that requires special handling, then
- * let Tk_FreeOptions handle all the standard option-related
- * stuff.
- */
-
- if (mbPtr->textVarName != NULL) {
- Tcl_UntraceVar(mbPtr->interp, mbPtr->textVarName,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuButtonTextVarProc, (ClientData) mbPtr);
- }
- if (mbPtr->image != NULL) {
- Tk_FreeImage(mbPtr->image);
- }
- if (mbPtr->normalTextGC != None) {
- Tk_FreeGC(mbPtr->display, mbPtr->normalTextGC);
- }
- if (mbPtr->activeTextGC != None) {
- Tk_FreeGC(mbPtr->display, mbPtr->activeTextGC);
- }
- if (mbPtr->gray != None) {
- Tk_FreeBitmap(mbPtr->display, mbPtr->gray);
- }
- if (mbPtr->disabledGC != None) {
- Tk_FreeGC(mbPtr->display, mbPtr->disabledGC);
- }
- Tk_FreeTextLayout(mbPtr->textLayout);
- Tk_FreeOptions(configSpecs, (char *) mbPtr, mbPtr->display, 0);
- ckfree((char *) mbPtr);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ConfigureMenuButton --
- *
- * This procedure is called to process an argv/argc list, plus
- * the Tk option database, in order to configure (or
- * reconfigure) a menubutton 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 mbPtr; old resources get freed, if there
- * were any. The menubutton is redisplayed.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- ConfigureMenuButton(interp, mbPtr, argc, argv, flags)
- Tcl_Interp *interp; /* Used for error reporting. */
- register TkMenuButton *mbPtr; /* 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 Tk_ConfigureWidget. */
- {
- int result;
- Tk_Image image;
-
- /*
- * Eliminate any existing trace on variables monitored by the menubutton.
- */
-
- if (mbPtr->textVarName != NULL) {
- Tcl_UntraceVar(interp, mbPtr->textVarName,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuButtonTextVarProc, (ClientData) mbPtr);
- }
-
- result = Tk_ConfigureWidget(interp, mbPtr->tkwin, configSpecs,
- argc, argv, (char *) mbPtr, flags);
- if (result != TCL_OK) {
- return TCL_ERROR;
- }
-
- /*
- * A few options need special processing, such as setting the
- * background from a 3-D border, or filling in complicated
- * defaults that couldn't be specified to Tk_ConfigureWidget.
- */
-
- if ((mbPtr->state == tkActiveUid) && !Tk_StrictMotif(mbPtr->tkwin)) {
- Tk_SetBackgroundFromBorder(mbPtr->tkwin, mbPtr->activeBorder);
- } else {
- Tk_SetBackgroundFromBorder(mbPtr->tkwin, mbPtr->normalBorder);
- if ((mbPtr->state != tkNormalUid) && (mbPtr->state != tkActiveUid)
- && (mbPtr->state != tkDisabledUid)) {
- Tcl_AppendResult(interp, "bad state value \"", mbPtr->state,
- "\": must be normal, active, or disabled", (char *) NULL);
- mbPtr->state = tkNormalUid;
- return TCL_ERROR;
- }
- }
-
- if ((mbPtr->direction != aboveUid) && (mbPtr->direction != belowUid)
- && (mbPtr->direction != leftUid) && (mbPtr->direction != rightUid)
- && (mbPtr->direction != flushUid)) {
- Tcl_AppendResult(interp, "bad direction value \"", mbPtr->direction,
- "\": must be above, below, left, right, or flush",
- (char *) NULL);
- mbPtr->direction = belowUid;
- return TCL_ERROR;
- }
-
- if (mbPtr->highlightWidth < 0) {
- mbPtr->highlightWidth = 0;
- }
-
- if (mbPtr->padX < 0) {
- mbPtr->padX = 0;
- }
- if (mbPtr->padY < 0) {
- mbPtr->padY = 0;
- }
-
- /*
- * Get the image for the widget, if there is one. Allocate the
- * new image before freeing the old one, so that the reference
- * count doesn't go to zero and cause image data to be discarded.
- */
-
- if (mbPtr->imageString != NULL) {
- image = Tk_GetImage(mbPtr->interp, mbPtr->tkwin,
- mbPtr->imageString, MenuButtonImageProc, (ClientData) mbPtr);
- if (image == NULL) {
- return TCL_ERROR;
- }
- } else {
- image = NULL;
- }
- if (mbPtr->image != NULL) {
- Tk_FreeImage(mbPtr->image);
- }
- mbPtr->image = image;
-
- if ((mbPtr->image == NULL) && (mbPtr->bitmap == None)
- && (mbPtr->textVarName != NULL)) {
- /*
- * The menubutton displays a variable. Set up a trace to watch
- * for any changes in it.
- */
-
- char *value;
-
- value = Tcl_GetVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY);
- if (value == NULL) {
- Tcl_SetVar(interp, mbPtr->textVarName, mbPtr->text,
- TCL_GLOBAL_ONLY);
- } else {
- if (mbPtr->text != NULL) {
- ckfree(mbPtr->text);
- }
- mbPtr->text = (char *) ckalloc((unsigned) (strlen(value) + 1));
- strcpy(mbPtr->text, value);
- }
- Tcl_TraceVar(interp, mbPtr->textVarName,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuButtonTextVarProc, (ClientData) mbPtr);
- }
-
- /*
- * Recompute the geometry for the button.
- */
-
- if ((mbPtr->bitmap != None) || (mbPtr->image != NULL)) {
- if (Tk_GetPixels(interp, mbPtr->tkwin, mbPtr->widthString,
- &mbPtr->width) != TCL_OK) {
- widthError:
- Tcl_AddErrorInfo(interp, "\n (processing -width option)");
- return TCL_ERROR;
- }
- if (Tk_GetPixels(interp, mbPtr->tkwin, mbPtr->heightString,
- &mbPtr->height) != TCL_OK) {
- heightError:
- Tcl_AddErrorInfo(interp, "\n (processing -height option)");
- return TCL_ERROR;
- }
- } else {
- if (Tcl_GetInt(interp, mbPtr->widthString, &mbPtr->width)
- != TCL_OK) {
- goto widthError;
- }
- if (Tcl_GetInt(interp, mbPtr->heightString, &mbPtr->height)
- != TCL_OK) {
- goto heightError;
- }
- }
- TkMenuButtonWorldChanged((ClientData) mbPtr);
- return TCL_OK;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TkMenuButtonWorldChanged --
- *
- * This procedure is called when the world has changed in some
- * way and the widget needs to recompute all its graphics contexts
- * and determine its new geometry.
- *
- * Results:
- * None.
- *
- * Side effects:
- * TkMenuButton will be relayed out and redisplayed.
- *
- *---------------------------------------------------------------------------
- */
-
- void
- TkMenuButtonWorldChanged(instanceData)
- ClientData instanceData; /* Information about widget. */
- {
- XGCValues gcValues;
- GC gc;
- unsigned long mask;
- TkMenuButton *mbPtr;
-
- mbPtr = (TkMenuButton *) instanceData;
-
- gcValues.font = Tk_FontId(mbPtr->tkfont);
- gcValues.foreground = mbPtr->normalFg->pixel;
- gcValues.background = Tk_3DBorderColor(mbPtr->normalBorder)->pixel;
-
- /*
- * Note: GraphicsExpose events are disabled in GC's because they're
- * used to copy stuff from an off-screen pixmap onto the screen (we know
- * that there's no problem with obscured areas).
- */
-
- gcValues.graphics_exposures = False;
- mask = GCForeground | GCBackground | GCFont | GCGraphicsExposures;
- gc = Tk_GetGC(mbPtr->tkwin, mask, &gcValues);
- if (mbPtr->normalTextGC != None) {
- Tk_FreeGC(mbPtr->display, mbPtr->normalTextGC);
- }
- mbPtr->normalTextGC = gc;
-
- gcValues.font = Tk_FontId(mbPtr->tkfont);
- gcValues.foreground = mbPtr->activeFg->pixel;
- gcValues.background = Tk_3DBorderColor(mbPtr->activeBorder)->pixel;
- mask = GCForeground | GCBackground | GCFont;
- gc = Tk_GetGC(mbPtr->tkwin, mask, &gcValues);
- if (mbPtr->activeTextGC != None) {
- Tk_FreeGC(mbPtr->display, mbPtr->activeTextGC);
- }
- mbPtr->activeTextGC = gc;
-
- gcValues.font = Tk_FontId(mbPtr->tkfont);
- gcValues.background = Tk_3DBorderColor(mbPtr->normalBorder)->pixel;
- if ((mbPtr->disabledFg != NULL) && (mbPtr->imageString == NULL)) {
- gcValues.foreground = mbPtr->disabledFg->pixel;
- mask = GCForeground | GCBackground | GCFont;
- } else {
- gcValues.foreground = gcValues.background;
- mask = GCForeground;
- if (mbPtr->gray == None) {
- mbPtr->gray = Tk_GetBitmap(NULL, mbPtr->tkwin,
- Tk_GetUid("gray50"));
- }
- if (mbPtr->gray != None) {
- gcValues.fill_style = FillStippled;
- gcValues.stipple = mbPtr->gray;
- mask |= GCFillStyle | GCStipple;
- }
- }
- gc = Tk_GetGC(mbPtr->tkwin, mask, &gcValues);
- if (mbPtr->disabledGC != None) {
- Tk_FreeGC(mbPtr->display, mbPtr->disabledGC);
- }
- mbPtr->disabledGC = gc;
-
- TkpComputeMenuButtonGeometry(mbPtr);
-
- /*
- * Lastly, arrange for the button to be redisplayed.
- */
-
- if (Tk_IsMapped(mbPtr->tkwin) && !(mbPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(TkpDisplayMenuButton, (ClientData) mbPtr);
- mbPtr->flags |= REDRAW_PENDING;
- }
- }
-
- /*
- *--------------------------------------------------------------
- *
- * MenuButtonEventProc --
- *
- * This procedure is invoked by the Tk dispatcher for various
- * events on buttons.
- *
- * Results:
- * None.
- *
- * Side effects:
- * When the window gets deleted, internal structures get
- * cleaned up. When it gets exposed, it is redisplayed.
- *
- *--------------------------------------------------------------
- */
-
- static void
- MenuButtonEventProc(clientData, eventPtr)
- ClientData clientData; /* Information about window. */
- XEvent *eventPtr; /* Information about event. */
- {
- TkMenuButton *mbPtr = (TkMenuButton *) clientData;
- if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) {
- goto redraw;
- } else if (eventPtr->type == ConfigureNotify) {
- /*
- * Must redraw after size changes, since layout could have changed
- * and borders will need to be redrawn.
- */
-
- goto redraw;
- } else if (eventPtr->type == DestroyNotify) {
- TkpDestroyMenuButton(mbPtr);
- if (mbPtr->tkwin != NULL) {
- mbPtr->tkwin = NULL;
- Tcl_DeleteCommandFromToken(mbPtr->interp, mbPtr->widgetCmd);
- }
- if (mbPtr->flags & REDRAW_PENDING) {
- Tcl_CancelIdleCall(TkpDisplayMenuButton, (ClientData) mbPtr);
- }
- Tcl_EventuallyFree((ClientData) mbPtr, DestroyMenuButton);
- } else if (eventPtr->type == FocusIn) {
- if (eventPtr->xfocus.detail != NotifyInferior) {
- mbPtr->flags |= GOT_FOCUS;
- if (mbPtr->highlightWidth > 0) {
- goto redraw;
- }
- }
- } else if (eventPtr->type == FocusOut) {
- if (eventPtr->xfocus.detail != NotifyInferior) {
- mbPtr->flags &= ~GOT_FOCUS;
- if (mbPtr->highlightWidth > 0) {
- goto redraw;
- }
- }
- }
- return;
-
- redraw:
- if ((mbPtr->tkwin != NULL) && !(mbPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(TkpDisplayMenuButton, (ClientData) mbPtr);
- mbPtr->flags |= REDRAW_PENDING;
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * MenuButtonCmdDeletedProc --
- *
- * 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
- MenuButtonCmdDeletedProc(clientData)
- ClientData clientData; /* Pointer to widget record for widget. */
- {
- TkMenuButton *mbPtr = (TkMenuButton *) clientData;
- Tk_Window tkwin = mbPtr->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) {
- mbPtr->tkwin = NULL;
- Tk_DestroyWindow(tkwin);
- }
- }
-
- /*
- *--------------------------------------------------------------
- *
- * MenuButtonTextVarProc --
- *
- * This procedure is invoked when someone changes the variable
- * whose contents are to be displayed in a menu button.
- *
- * Results:
- * NULL is always returned.
- *
- * Side effects:
- * The text displayed in the menu button will change to match the
- * variable.
- *
- *--------------------------------------------------------------
- */
-
- /* ARGSUSED */
- static char *
- MenuButtonTextVarProc(clientData, interp, name1, name2, flags)
- ClientData clientData; /* Information about button. */
- Tcl_Interp *interp; /* Interpreter containing variable. */
- char *name1; /* Name of variable. */
- char *name2; /* Second part of variable name. */
- int flags; /* Information about what happened. */
- {
- register TkMenuButton *mbPtr = (TkMenuButton *) clientData;
- char *value;
-
- /*
- * If the variable is unset, then immediately recreate it unless
- * the whole interpreter is going away.
- */
-
- if (flags & TCL_TRACE_UNSETS) {
- if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
- Tcl_SetVar(interp, mbPtr->textVarName, mbPtr->text,
- TCL_GLOBAL_ONLY);
- Tcl_TraceVar(interp, mbPtr->textVarName,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuButtonTextVarProc, clientData);
- }
- return (char *) NULL;
- }
-
- value = Tcl_GetVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY);
- if (value == NULL) {
- value = "";
- }
- if (mbPtr->text != NULL) {
- ckfree(mbPtr->text);
- }
- mbPtr->text = (char *) ckalloc((unsigned) (strlen(value) + 1));
- strcpy(mbPtr->text, value);
- TkpComputeMenuButtonGeometry(mbPtr);
-
- if ((mbPtr->tkwin != NULL) && Tk_IsMapped(mbPtr->tkwin)
- && !(mbPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(TkpDisplayMenuButton, (ClientData) mbPtr);
- mbPtr->flags |= REDRAW_PENDING;
- }
- return (char *) NULL;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * MenuButtonImageProc --
- *
- * This procedure is invoked by the image code whenever the manager
- * for an image does something that affects the size of contents
- * of an image displayed in a button.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Arranges for the button to get redisplayed.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- MenuButtonImageProc(clientData, x, y, width, height, imgWidth, imgHeight)
- ClientData clientData; /* Pointer to widget record. */
- int x, y; /* Upper left pixel (within image)
- * that must be redisplayed. */
- int width, height; /* Dimensions of area to redisplay
- * (may be <= 0). */
- int imgWidth, imgHeight; /* New dimensions of image. */
- {
- register TkMenuButton *mbPtr = (TkMenuButton *) clientData;
-
- if (mbPtr->tkwin != NULL) {
- TkpComputeMenuButtonGeometry(mbPtr);
- if (Tk_IsMapped(mbPtr->tkwin) && !(mbPtr->flags & REDRAW_PENDING)) {
- Tcl_DoWhenIdle(TkpDisplayMenuButton, (ClientData) mbPtr);
- mbPtr->flags |= REDRAW_PENDING;
- }
- }
- }
-