stk/Tk/generic/tkMenubutton.c

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/*
* tkMenubutton.c --
*
* This module implements button-like widgets that are used
* to invoke pull-down menus.
*
* Copyright (c) 1990-1994 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* SCCS: @(#) tkMenubutton.c 1.94 97/07/31 09:10:37
*/
#include "tkMenubutton.h"
#include "tkPort.h"
#include "default.h"
#ifdef BGLK_CODE
# define STk_tcl_getvar SCM_tcl_getvar
# define STk_tcl_setvar SCM_tcl_setvar
#endif
/*
* 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},
#ifdef STk_CODE
{TK_CONFIG_ENV, "-environment", "environment", "Environment",
DEF_MENUBUTTON_ENV, Tk_Offset(TkMenuButton, env),
0},
#endif
{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},
#ifdef SCM_CODE
{TK_CONFIG_IMAGE, "-image", "image", "Image",
#else
{TK_CONFIG_STRING, "-image", "image", "Image",
#endif
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},
#ifdef SCM_CODE
{TK_CONFIG_MENU, "-menu", "menu", "Menu",
#else
{TK_CONFIG_STRING, "-menu", "menu", "Menu",
#endif
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;
#ifdef SCM_CODE
mbPtr->env = NULL;
#endif
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;
}
#ifdef STk_CODE
STk_sharp_dot_result(interp, Tk_PathName(mbPtr->tkwin));
#else
interp->result = Tk_PathName(mbPtr->tkwin);
#endif
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;
#ifdef SCM_CODE
value = STk_tcl_getvar(mbPtr->textVarName, mbPtr->env);
#else
value = Tcl_GetVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY);
#endif
if (value == NULL) {
#ifdef SCM_CODE
STk_tcl_setvar(mbPtr->textVarName, mbPtr->text, 0, mbPtr->env);
#else
Tcl_SetVar(interp, mbPtr->textVarName, mbPtr->text,
TCL_GLOBAL_ONLY);
#endif
} 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)) {
#ifdef SCM_CODE
STk_tcl_setvar(mbPtr->textVarName, mbPtr->text, 0, mbPtr->env);
#else
Tcl_SetVar(interp, mbPtr->textVarName, mbPtr->text,
TCL_GLOBAL_ONLY);
#endif
Tcl_TraceVar(interp, mbPtr->textVarName,
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
MenuButtonTextVarProc, clientData);
}
return (char *) NULL;
}
#ifdef SCM_CODE
value = STk_tcl_getvar(mbPtr->textVarName, mbPtr->env);
#else
value = Tcl_GetVar(interp, mbPtr->textVarName, TCL_GLOBAL_ONLY);
#endif
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;
}
}
}