985 lines
28 KiB
C
985 lines
28 KiB
C
/*
|
||
* tkMenubutton.c --
|
||
*
|
||
* This module implements button-like widgets that are used to invoke
|
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* pull-down menus.
|
||
*
|
||
* Copyright (c) 1990-1994 The Regents of the University of California.
|
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* Copyright (c) 1994-1997 Sun Microsystems, Inc.
|
||
*
|
||
* See the file "license.terms" for information on usage and redistribution of
|
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* 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
|
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* procedures that can be invoked from generic window code.
|
||
*/
|
||
|
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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
|
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* 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
|
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* used together with the "enum state" declaration in tkMenubutton.h.
|
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*/
|
||
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||
static const char *const stateStrings[] = {
|
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"active", "disabled", "normal", NULL
|
||
};
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||
|
||
/*
|
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* The following table defines the legal values for the -compound option. It
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||
* is used with the "enum compound" declaration in tkMenuButton.h
|
||
*/
|
||
|
||
static const char *const compoundStrings[] = {
|
||
"bottom", "center", "left", "none", "right", "top", NULL
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||
};
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||
|
||
/*
|
||
* Information used for parsing configuration specs:
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*/
|
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static const Tk_OptionSpec optionSpecs[] = {
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{TK_OPTION_BORDER, "-activebackground", "activeBackground", "Foreground",
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||
DEF_MENUBUTTON_ACTIVE_BG_COLOR, -1,
|
||
Tk_Offset(TkMenuButton, activeBorder), 0,
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||
(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),
|
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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},
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||
{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,
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||
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},
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||
{TK_OPTION_STRING, "-textvariable", "textVariable", "Variable",
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DEF_MENUBUTTON_TEXT_VARIABLE, -1,
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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
|
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* indexes into the string tables into a single enumerated type used to
|
||
* dispatch the scale widget command.
|
||
*/
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||
|
||
static const char *const commandNames[] = {
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||
"cget", "configure", NULL
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||
};
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||
|
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enum command {
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COMMAND_CGET, COMMAND_CONFIGURE
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};
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|
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/*
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* Forward declarations for functions defined later in this file:
|
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*/
|
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|
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static void MenuButtonCmdDeletedProc(ClientData clientData);
|
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static void MenuButtonEventProc(ClientData clientData,
|
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XEvent *eventPtr);
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||
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. */
|
||
{
|
||
TkMenuButton *mbPtr;
|
||
Tk_OptionTable optionTable;
|
||
Tk_Window tkwin;
|
||
|
||
if (objc < 2) {
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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 = NULL;
|
||
mbPtr->activeTextGC = NULL;
|
||
mbPtr->gray = None;
|
||
mbPtr->disabledGC = NULL;
|
||
mbPtr->stippleGC = NULL;
|
||
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 = NULL;
|
||
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. */
|
||
{
|
||
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. */
|
||
{
|
||
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 != NULL) {
|
||
Tk_FreeGC(mbPtr->display, mbPtr->normalTextGC);
|
||
}
|
||
if (mbPtr->activeTextGC != NULL) {
|
||
Tk_FreeGC(mbPtr->display, mbPtr->activeTextGC);
|
||
}
|
||
if (mbPtr->disabledGC != NULL) {
|
||
Tk_FreeGC(mbPtr->display, mbPtr->disabledGC);
|
||
}
|
||
if (mbPtr->stippleGC != NULL) {
|
||
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. */
|
||
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 != NULL) {
|
||
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 != NULL) {
|
||
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 == NULL) {
|
||
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 != NULL) {
|
||
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. */
|
||
{
|
||
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 (!Tcl_InterpDeleted(interp) && mbPtr->textVarName) {
|
||
ClientData probe = NULL;
|
||
|
||
do {
|
||
probe = Tcl_VarTraceInfo(interp,
|
||
mbPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
MenuButtonTextVarProc, probe);
|
||
if (probe == (ClientData)mbPtr) {
|
||
break;
|
||
}
|
||
} while (probe);
|
||
if (probe) {
|
||
/*
|
||
* We were able to fetch the unset trace for our
|
||
* textVarName, which means it is not unset and not
|
||
* the cause of this unset trace. Instead some outdated
|
||
* former variable must be, and we should ignore it.
|
||
*/
|
||
return NULL;
|
||
}
|
||
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. */
|
||
{
|
||
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:
|
||
*/
|