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authorrjohnson <rjohnson>1998-04-01 09:51:44 (GMT)
committerrjohnson <rjohnson>1998-04-01 09:51:44 (GMT)
commit066ea7fd88d49cb456f74da71dbe875e4fc0aabb (patch)
tree8fb30cb152c4dc191be47fa043d2e6f5ea38c7ba /generic/tkMenubutton.c
parent13242623d2ff3ea02ab6a62bfb48a7dbb5c27e22 (diff)
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Initial revision
Diffstat (limited to 'generic/tkMenubutton.c')
-rw-r--r--generic/tkMenubutton.c865
1 files changed, 865 insertions, 0 deletions
diff --git a/generic/tkMenubutton.c b/generic/tkMenubutton.c
new file mode 100644
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--- /dev/null
+++ b/generic/tkMenubutton.c
@@ -0,0 +1,865 @@
+/*
+ * 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;
+ }
+ }
+}