/* * 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 1.12.2.1 2003/11/17 23:29:36 hobbs Exp $ */ #include "tkMenubutton.h" #include "tkPort.h" #include "default.h" /* * The following table defines the legal values for the -direction * option. It is used together with the "enum direction" declaration * in tkMenubutton.h. */ static char *directionStrings[] = { "above", "below", "flush", "left", "right", (char *) NULL }; /* * The following table defines the legal values for the -state option. * It is used together with the "enum state" declaration in tkMenubutton.h. */ static char *stateStrings[] = { "active", "disabled", "normal", (char *) NULL }; /* * The following table defines the legal values for the -compound option. * It is used with the "enum compound" declaration in tkMenuButton.h */ static char *compoundStrings[] = { "bottom", "center", "left", "none", "right", "top", (char *) NULL }; /* * Information used for parsing configuration specs: */ static Tk_OptionSpec optionSpecs[] = { {TK_OPTION_BORDER, "-activebackground", "activeBackground", "Foreground", DEF_MENUBUTTON_ACTIVE_BG_COLOR, -1, Tk_Offset(TkMenuButton, activeBorder), 0, (ClientData) DEF_MENUBUTTON_ACTIVE_BG_MONO, 0}, {TK_OPTION_COLOR, "-activeforeground", "activeForeground", "Background", DEF_MENUBUTTON_ACTIVE_FG_COLOR, -1, Tk_Offset(TkMenuButton, activeFg), 0, (ClientData) DEF_MENUBUTTON_ACTIVE_FG_MONO, 0}, {TK_OPTION_ANCHOR, "-anchor", "anchor", "Anchor", DEF_MENUBUTTON_ANCHOR, -1, Tk_Offset(TkMenuButton, anchor), 0, 0, 0}, {TK_OPTION_BORDER, "-background", "background", "Background", DEF_MENUBUTTON_BG_COLOR, -1, Tk_Offset(TkMenuButton, normalBorder), 0, (ClientData) DEF_MENUBUTTON_BG_MONO, 0}, {TK_OPTION_SYNONYM, "-bd", (char *) NULL, (char *) NULL, (char *) NULL, 0, -1, 0, (ClientData) "-borderwidth", 0}, {TK_OPTION_SYNONYM, "-bg", (char *) NULL, (char *) NULL, (char *) NULL, 0, -1, 0, (ClientData) "-background", 0}, {TK_OPTION_BITMAP, "-bitmap", "bitmap", "Bitmap", DEF_MENUBUTTON_BITMAP, -1, Tk_Offset(TkMenuButton, bitmap), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", DEF_MENUBUTTON_BORDER_WIDTH, -1, Tk_Offset(TkMenuButton, borderWidth), 0, 0, 0}, {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor", DEF_MENUBUTTON_CURSOR, -1, Tk_Offset(TkMenuButton, cursor), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING_TABLE, "-direction", "direction", "Direction", DEF_MENUBUTTON_DIRECTION, -1, Tk_Offset(TkMenuButton, direction), 0, (ClientData) directionStrings, 0}, {TK_OPTION_COLOR, "-disabledforeground", "disabledForeground", "DisabledForeground", DEF_MENUBUTTON_DISABLED_FG_COLOR, -1, Tk_Offset(TkMenuButton, disabledFg), TK_OPTION_NULL_OK, (ClientData) DEF_MENUBUTTON_DISABLED_FG_MONO, 0}, {TK_OPTION_SYNONYM, "-fg", "foreground", (char *) NULL, (char *) NULL, 0, -1, 0, (ClientData) "-foreground", 0}, {TK_OPTION_FONT, "-font", "font", "Font", DEF_MENUBUTTON_FONT, -1, Tk_Offset(TkMenuButton, tkfont), 0, 0, 0}, {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground", DEF_MENUBUTTON_FG, -1, Tk_Offset(TkMenuButton, normalFg), 0, 0, 0}, {TK_OPTION_STRING, "-height", "height", "Height", DEF_MENUBUTTON_HEIGHT, -1, Tk_Offset(TkMenuButton, heightString), 0, 0, 0}, {TK_OPTION_COLOR, "-highlightbackground", "highlightBackground", "HighlightBackground", DEF_MENUBUTTON_HIGHLIGHT_BG_COLOR, -1, Tk_Offset(TkMenuButton, highlightBgColorPtr), 0, 0, 0}, {TK_OPTION_COLOR, "-highlightcolor", "highlightColor", "HighlightColor", DEF_MENUBUTTON_HIGHLIGHT, -1, Tk_Offset(TkMenuButton, highlightColorPtr), 0, 0, 0}, {TK_OPTION_PIXELS, "-highlightthickness", "highlightThickness", "HighlightThickness", DEF_MENUBUTTON_HIGHLIGHT_WIDTH, -1, Tk_Offset(TkMenuButton, highlightWidth), 0, 0, 0}, {TK_OPTION_STRING, "-image", "image", "Image", DEF_MENUBUTTON_IMAGE, -1, Tk_Offset(TkMenuButton, imageString), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_BOOLEAN, "-indicatoron", "indicatorOn", "IndicatorOn", DEF_MENUBUTTON_INDICATOR, -1, Tk_Offset(TkMenuButton, indicatorOn), 0, 0, 0}, {TK_OPTION_JUSTIFY, "-justify", "justify", "Justify", DEF_BUTTON_JUSTIFY, -1, Tk_Offset(TkMenuButton, justify), 0, 0, 0}, {TK_OPTION_STRING, "-menu", "menu", "Menu", DEF_MENUBUTTON_MENU, -1, Tk_Offset(TkMenuButton, menuName), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_PIXELS, "-padx", "padX", "Pad", DEF_MENUBUTTON_PADX, -1, Tk_Offset(TkMenuButton, padX), 0, 0, 0}, {TK_OPTION_PIXELS, "-pady", "padY", "Pad", DEF_MENUBUTTON_PADY, -1, Tk_Offset(TkMenuButton, padY), 0, 0, 0}, {TK_OPTION_RELIEF, "-relief", "relief", "Relief", DEF_MENUBUTTON_RELIEF, -1, Tk_Offset(TkMenuButton, relief), 0, 0, 0}, {TK_OPTION_STRING_TABLE, "-compound", "compound", "Compound", DEF_BUTTON_COMPOUND, -1, Tk_Offset(TkMenuButton, compound), 0, (ClientData) compoundStrings, 0}, {TK_OPTION_STRING_TABLE, "-state", "state", "State", DEF_MENUBUTTON_STATE, -1, Tk_Offset(TkMenuButton, state), 0, (ClientData) stateStrings, 0}, {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus", DEF_MENUBUTTON_TAKE_FOCUS, -1, Tk_Offset(TkMenuButton, takeFocus), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_STRING, "-text", "text", "Text", DEF_MENUBUTTON_TEXT, -1, Tk_Offset(TkMenuButton, text), 0, 0, 0}, {TK_OPTION_STRING, "-textvariable", "textVariable", "Variable", DEF_MENUBUTTON_TEXT_VARIABLE, -1, Tk_Offset(TkMenuButton, textVarName), TK_OPTION_NULL_OK, 0, 0}, {TK_OPTION_INT, "-underline", "underline", "Underline", DEF_MENUBUTTON_UNDERLINE, -1, Tk_Offset(TkMenuButton, underline), 0, 0, 0}, {TK_OPTION_STRING, "-width", "width", "Width", DEF_MENUBUTTON_WIDTH, -1, Tk_Offset(TkMenuButton, widthString), 0, 0, 0}, {TK_OPTION_PIXELS, "-wraplength", "wrapLength", "WrapLength", DEF_MENUBUTTON_WRAP_LENGTH, -1, Tk_Offset(TkMenuButton, wrapLength), 0, 0, 0}, {TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL, (char *) NULL, 0, 0} }; /* * The following tables define the menubutton widget commands and map the * indexes into the string tables into a single enumerated type used * to dispatch the scale widget command. */ static CONST char *commandNames[] = { "cget", "configure", (char *) NULL }; enum command { COMMAND_CGET, COMMAND_CONFIGURE }; /* * 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, CONST char *name1, CONST char *name2, int flags)); static int MenuButtonWidgetObjCmd _ANSI_ARGS_(( ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])); static int ConfigureMenuButton _ANSI_ARGS_((Tcl_Interp *interp, TkMenuButton *mbPtr, int objc, Tcl_Obj *CONST objv[])); static void DestroyMenuButton _ANSI_ARGS_((char *memPtr)); /* *-------------------------------------------------------------- * * Tk_MenubuttonObjCmd -- * * 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_MenubuttonObjCmd(clientData, interp, objc, objv) ClientData clientData; /* NULL. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { register TkMenuButton *mbPtr; Tk_OptionTable optionTable; Tk_Window tkwin; if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "pathName ?options?"); return TCL_ERROR; } /* * Create the new window. */ tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp), Tcl_GetString(objv[1]), (char *) NULL); if (tkwin == NULL) { return TCL_ERROR; } /* * Create the option table for this widget class. If it has already * been created, the cached pointer will be returned. */ optionTable = Tk_CreateOptionTable(interp, optionSpecs); Tk_SetClass(tkwin, "Menubutton"); mbPtr = TkpCreateMenuButton(tkwin); Tk_SetClassProcs(tkwin, &tkpMenubuttonClass, (ClientData) mbPtr); /* * Initialize the data structure for the button. */ mbPtr->tkwin = tkwin; mbPtr->display = Tk_Display (tkwin); mbPtr->interp = interp; mbPtr->widgetCmd = Tcl_CreateObjCommand(interp, Tk_PathName(mbPtr->tkwin), MenuButtonWidgetObjCmd, (ClientData) mbPtr, MenuButtonCmdDeletedProc); mbPtr->optionTable = optionTable; mbPtr->menuName = NULL; mbPtr->text = NULL; mbPtr->underline = -1; mbPtr->textVarName = NULL; mbPtr->bitmap = None; mbPtr->imageString = NULL; mbPtr->image = NULL; mbPtr->state = STATE_NORMAL; 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->stippleGC = 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->direction = DIRECTION_FLUSH; mbPtr->cursor = None; mbPtr->takeFocus = NULL; mbPtr->flags = 0; Tk_CreateEventHandler(mbPtr->tkwin, ExposureMask|StructureNotifyMask|FocusChangeMask, MenuButtonEventProc, (ClientData) mbPtr); if (Tk_InitOptions(interp, (char *) mbPtr, optionTable, tkwin) != TCL_OK) { Tk_DestroyWindow(mbPtr->tkwin); return TCL_ERROR; } if (ConfigureMenuButton(interp, mbPtr, objc-2, objv+2) != TCL_OK) { Tk_DestroyWindow(mbPtr->tkwin); return TCL_ERROR; } Tcl_SetStringObj(Tcl_GetObjResult(interp), Tk_PathName(mbPtr->tkwin), -1); return TCL_OK; } /* *-------------------------------------------------------------- * * MenuButtonWidgetObjCmd -- * * 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 MenuButtonWidgetObjCmd(clientData, interp, objc, objv) ClientData clientData; /* Information about button widget. */ Tcl_Interp *interp; /* Current interpreter. */ int objc; /* Number of arguments. */ Tcl_Obj *CONST objv[]; /* Argument objects. */ { register TkMenuButton *mbPtr = (TkMenuButton *) clientData; int result, index; Tcl_Obj *objPtr; if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?"); return TCL_ERROR; } result = Tcl_GetIndexFromObj(interp, objv[1], commandNames, "option", 0, &index); if (result != TCL_OK) { return result; } Tcl_Preserve((ClientData) mbPtr); switch (index) { case COMMAND_CGET: { if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "cget option"); goto error; } objPtr = Tk_GetOptionValue(interp, (char *) mbPtr, mbPtr->optionTable, objv[2], mbPtr->tkwin); if (objPtr == NULL) { goto error; } else { Tcl_SetObjResult(interp, objPtr); } break; } case COMMAND_CONFIGURE: { if (objc <= 3) { objPtr = Tk_GetOptionInfo(interp, (char *) mbPtr, mbPtr->optionTable, (objc == 3) ? objv[2] : (Tcl_Obj *) NULL, mbPtr->tkwin); if (objPtr == NULL) { goto error; } else { Tcl_SetObjResult(interp, objPtr); } } else { result = ConfigureMenuButton(interp, mbPtr, objc-2, objv+2); } break; } } Tcl_Release((ClientData) mbPtr); return result; error: Tcl_Release((ClientData) mbPtr); return TCL_ERROR; } /* *---------------------------------------------------------------------- * * DestroyMenuButton -- * * This procedure is invoked to recycle all of the resources * associated with a menubutton widget. It is invoked as a * when-idle handler in order to make sure that there is no * other use of the menubutton 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; TkpDestroyMenuButton(mbPtr); if (mbPtr->flags & REDRAW_PENDING) { Tcl_CancelIdleCall(TkpDisplayMenuButton, (ClientData) mbPtr); } /* * Free up all the stuff that requires special handling, then * let Tk_FreeOptions handle all the standard option-related * stuff. */ Tcl_DeleteCommandFromToken(mbPtr->interp, mbPtr->widgetCmd); 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->disabledGC != None) { Tk_FreeGC(mbPtr->display, mbPtr->disabledGC); } if (mbPtr->stippleGC != None) { Tk_FreeGC(mbPtr->display, mbPtr->stippleGC); } if (mbPtr->gray != None) { Tk_FreeBitmap(mbPtr->display, mbPtr->gray); } if (mbPtr->textLayout != NULL) { Tk_FreeTextLayout(mbPtr->textLayout); } Tk_FreeConfigOptions((char *) mbPtr, mbPtr->optionTable, mbPtr->tkwin); mbPtr->tkwin = NULL; Tcl_EventuallyFree((ClientData) mbPtr, TCL_DYNAMIC); } /* *---------------------------------------------------------------------- * * 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 the interp's 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, objc, objv) Tcl_Interp *interp; /* Used for error reporting. */ register TkMenuButton *mbPtr; /* Information about widget; may or may * not already have values for some * fields. */ int objc; /* Number of valid entries in objv. */ Tcl_Obj *CONST objv[]; /* Arguments. */ { Tk_SavedOptions savedOptions; Tcl_Obj *errorResult = NULL; int error; 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); } /* * The following loop is potentially executed twice. During the * first pass configuration options get set to their new values. * If there is an error in this pass, we execute a second pass * to restore all the options to their previous values. */ for (error = 0; error <= 1; error++) { if (!error) { /* * First pass: set options to new values. */ if (Tk_SetOptions(interp, (char *) mbPtr, mbPtr->optionTable, objc, objv, mbPtr->tkwin, &savedOptions, (int *) NULL) != TCL_OK) { continue; } } else { /* * Second pass: restore options to old values. */ errorResult = Tcl_GetObjResult(interp); Tcl_IncrRefCount(errorResult); Tk_RestoreSavedOptions(&savedOptions); } /* * 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_SetOptions. */ if ((mbPtr->state == STATE_ACTIVE) && !Tk_StrictMotif(mbPtr->tkwin)) { Tk_SetBackgroundFromBorder(mbPtr->tkwin, mbPtr->activeBorder); } else { Tk_SetBackgroundFromBorder(mbPtr->tkwin, mbPtr->normalBorder); } 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; /* * 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)"); continue; } if (Tk_GetPixels(interp, mbPtr->tkwin, mbPtr->heightString, &mbPtr->height) != TCL_OK) { heightError: Tcl_AddErrorInfo(interp, "\n (processing -height option)"); continue; } } 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; } } break; } if (!error) { Tk_FreeSavedOptions(&savedOptions); } if ((mbPtr->image == NULL) && (mbPtr->bitmap == None) && (mbPtr->textVarName != NULL)) { /* * The menubutton displays the value of a variable. * Set up a trace to watch for any changes in it, create * the variable if it doesn't exist, and fetch its * current value. */ CONST 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); } TkMenuButtonWorldChanged((ClientData) mbPtr); if (error) { Tcl_SetObjResult(interp, errorResult); Tcl_DecrRefCount(errorResult); return TCL_ERROR; } else { 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.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.background = Tk_3DBorderColor(mbPtr->normalBorder)->pixel; /* * Create the GC that can be used for stippling */ if (mbPtr->stippleGC == None) { gcValues.foreground = gcValues.background; mask = GCForeground; if (mbPtr->gray == None) { mbPtr->gray = Tk_GetBitmap(NULL, mbPtr->tkwin, "gray50"); } if (mbPtr->gray != None) { gcValues.fill_style = FillStippled; gcValues.stipple = mbPtr->gray; mask |= GCFillStyle | GCStipple; } mbPtr->stippleGC = Tk_GetGC(mbPtr->tkwin, mask, &gcValues); } /* * Allocate the disabled graphics context, for drawing text in * its disabled state. */ mask = GCForeground | GCBackground | GCFont; if (mbPtr->disabledFg != NULL) { gcValues.foreground = mbPtr->disabledFg->pixel; } else { gcValues.foreground = gcValues.background; } 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) { DestroyMenuButton((char *) mbPtr); } 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) { 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. */ CONST char *name1; /* Name of variable. */ CONST char *name2; /* Second part of variable name. */ int flags; /* Information about what happened. */ { register TkMenuButton *mbPtr = (TkMenuButton *) clientData; CONST 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; } } }