/*
* 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.
*/
#include "tkInt.h"
#include "tkMenubutton.h"
#include "default.h"
/*
* The structure below defines menubutton class behavior by means of
* procedures that can be invoked from generic window code.
*/
static const Tk_ClassProcs menubuttonClass = {
sizeof(Tk_ClassProcs), /* size */
TkMenuButtonWorldChanged, /* worldChangedProc */
NULL, /* createProc */
NULL /* modalProc */
};
/*
* The following table defines the legal values for the -direction option. It
* is used together with the "enum direction" declaration in tkMenubutton.h.
*/
static const char *const directionStrings[] = {
"above", "below", "flush", "left", "right", 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 const char *const stateStrings[] = {
"active", "disabled", "normal", NULL
};
/*
* The following table defines the legal values for the -compound option. It
* is used with the "enum compound" declaration in tkMenuButton.h
*/
static const char *const compoundStrings[] = {
"bottom", "center", "left", "none", "right", "top", NULL
};
/*
* Information used for parsing configuration specs:
*/
static const 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, 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, DEF_MENUBUTTON_BG_MONO, 0},
{TK_OPTION_SYNONYM, "-bd", NULL, NULL, NULL, 0, -1, 0,
(ClientData) "-borderwidth", 0},
{TK_OPTION_SYNONYM, "-bg", NULL, NULL, 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, 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", NULL, 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_MENUBUTTON_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,
compoundStrings, 0},
{TK_OPTION_STRING_TABLE, "-state", "state", "State",
DEF_MENUBUTTON_STATE, -1, Tk_Offset(TkMenuButton, state),
0, 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, NULL, NULL, NULL, NULL, 0, 0, 0, NULL, 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 *const commandNames[] = {
"cget", "configure", NULL
};
enum command {
COMMAND_CGET, COMMAND_CONFIGURE
};
/*
* Forward declarations for functions defined later in this file:
*/
static void MenuButtonCmdDeletedProc(ClientData clientData);
static void MenuButtonEventProc(ClientData clientData,
XEvent *eventPtr);
static void MenuButtonImageProc(ClientData clientData,
int x, int y, int width, int height, int imgWidth,
int imgHeight);
static char * MenuButtonTextVarProc(ClientData clientData,
Tcl_Interp *interp, const char *name1,
const char *name2, int flags);
static int MenuButtonWidgetObjCmd(ClientData clientData,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static int ConfigureMenuButton(Tcl_Interp *interp,
TkMenuButton *mbPtr, int objc,
Tcl_Obj *const objv[]);
static void DestroyMenuButton(char *memPtr);
/*
*--------------------------------------------------------------
*
* Tk_MenubuttonObjCmd --
*
* This function 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 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 ?-option value ...?");
return TCL_ERROR;
}
/*
* Create the new window.
*/
tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp),
Tcl_GetString(objv[1]), 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, &menubuttonClass, 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, 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, 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_SetObjResult(interp, TkNewWindowObj(mbPtr->tkwin));
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* MenuButtonWidgetObjCmd --
*
* This function 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 clientData, /* Information about button widget. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
register TkMenuButton *mbPtr = clientData;
int result, index;
Tcl_Obj *objPtr;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
return TCL_ERROR;
}
result = Tcl_GetIndexFromObjStruct(interp, objv[1], commandNames,
sizeof(char *), "option", 0, &index);
if (result != TCL_OK) {
return result;
}
Tcl_Preserve(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;
}
Tcl_SetObjResult(interp, objPtr);
break;
case COMMAND_CONFIGURE:
if (objc <= 3) {
objPtr = Tk_GetOptionInfo(interp, (char *) mbPtr,
mbPtr->optionTable, (objc == 3) ? objv[2] : NULL,
mbPtr->tkwin);
if (objPtr == NULL) {
goto error;
}
Tcl_SetObjResult(interp, objPtr);
} else {
result = ConfigureMenuButton(interp, mbPtr, objc-2, objv+2);
}
break;
}
Tcl_Release(mbPtr);
return result;
error:
Tcl_Release(mbPtr);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* DestroyMenuButton --
*
* This function 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(
char *memPtr) /* Info about button widget. */
{
register TkMenuButton *mbPtr = (TkMenuButton *) memPtr;
TkpDestroyMenuButton(mbPtr);
if (mbPtr->flags & REDRAW_PENDING) {
Tcl_CancelIdleCall(TkpDisplayMenuButton, 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_UntraceVar2(mbPtr->interp, mbPtr->textVarName, NULL,
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
MenuButtonTextVarProc, 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(mbPtr, TCL_DYNAMIC);
}
/*
*----------------------------------------------------------------------
*
* ConfigureMenuButton --
*
* This function 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(
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_UntraceVar2(interp, mbPtr->textVarName, NULL,
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
MenuButtonTextVarProc, 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, 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, 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_GetVar2(interp, mbPtr->textVarName, NULL, TCL_GLOBAL_ONLY);
if (value == NULL) {
Tcl_SetVar2(interp, mbPtr->textVarName, NULL, mbPtr->text,
TCL_GLOBAL_ONLY);
} else {
if (mbPtr->text != NULL) {
ckfree(mbPtr->text);
}
mbPtr->text = ckalloc(strlen(value) + 1);
strcpy(mbPtr->text, value);
}
Tcl_TraceVar2(interp, mbPtr->textVarName, NULL,
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
MenuButtonTextVarProc, mbPtr);
}
TkMenuButtonWorldChanged(mbPtr);
if (error) {
Tcl_SetObjResult(interp, errorResult);
Tcl_DecrRefCount(errorResult);
return TCL_ERROR;
}
return TCL_OK;
}
/*
*---------------------------------------------------------------------------
*
* TkMenuButtonWorldChanged --
*
* This function 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(
ClientData instanceData) /* Information about widget. */
{
XGCValues gcValues;
GC gc;
unsigned long mask;
TkMenuButton *mbPtr = 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, mbPtr);
mbPtr->flags |= REDRAW_PENDING;
}
}
/*
*--------------------------------------------------------------
*
* MenuButtonEventProc --
*
* This function 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 clientData, /* Information about window. */
XEvent *eventPtr) /* Information about event. */
{
TkMenuButton *mbPtr = 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, mbPtr);
mbPtr->flags |= REDRAW_PENDING;
}
}
/*
*----------------------------------------------------------------------
*
* MenuButtonCmdDeletedProc --
*
* This function 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) /* Pointer to widget record for widget. */
{
TkMenuButton *mbPtr = clientData;
Tk_Window tkwin = mbPtr->tkwin;
/*
* This function 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 function destroys the
* widget.
*/
if (tkwin != NULL) {
Tk_DestroyWindow(tkwin);
}
}
/*
*--------------------------------------------------------------
*
* MenuButtonTextVarProc --
*
* This function 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 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 = clientData;
const char *value;
unsigned len;
/*
* 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_SetVar2(interp, mbPtr->textVarName, NULL, mbPtr->text,
TCL_GLOBAL_ONLY);
Tcl_TraceVar2(interp, mbPtr->textVarName, NULL,
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
MenuButtonTextVarProc, clientData);
}
return NULL;
}
value = Tcl_GetVar2(interp, mbPtr->textVarName, NULL, TCL_GLOBAL_ONLY);
if (value == NULL) {
value = "";
}
if (mbPtr->text != NULL) {
ckfree(mbPtr->text);
}
len = 1 + (unsigned) strlen(value);
mbPtr->text = ckalloc(len);
memcpy(mbPtr->text, value, len);
TkpComputeMenuButtonGeometry(mbPtr);
if ((mbPtr->tkwin != NULL) && Tk_IsMapped(mbPtr->tkwin)
&& !(mbPtr->flags & REDRAW_PENDING)) {
Tcl_DoWhenIdle(TkpDisplayMenuButton, mbPtr);
mbPtr->flags |= REDRAW_PENDING;
}
return NULL;
}
/*
*----------------------------------------------------------------------
*
* MenuButtonImageProc --
*
* This function 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 clientData, /* Pointer to widget record. */
int x, int y, /* Upper left pixel (within image) that must
* be redisplayed. */
int width, int height, /* Dimensions of area to redisplay (may be <=
* 0). */
int imgWidth, int imgHeight)/* New dimensions of image. */
{
register TkMenuButton *mbPtr = clientData;
if (mbPtr->tkwin != NULL) {
TkpComputeMenuButtonGeometry(mbPtr);
if (Tk_IsMapped(mbPtr->tkwin) && !(mbPtr->flags & REDRAW_PENDING)) {
Tcl_DoWhenIdle(TkpDisplayMenuButton, mbPtr);
mbPtr->flags |= REDRAW_PENDING;
}
}
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/