tkMenubutton.c
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上传日期:2015-12-11
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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.
- *
- * RCS: @(#) $Id: tkMenubutton.c,v 1.12.2.2 2007/12/13 23:13:52 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->textVarName != NULL) {
- /*
- * If no image or -compound is used, display 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;
- }
- }
- }