/* * 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. * * RCS: @(#) $Id: tkMenubutton.c,v 1.2 1998/09/14 18:23:14 stanton Exp $ */ #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; } } }