tkbutton.c

linux系统下的音频通信

/* 
 * tkButton.c --
 *
 *	This module implements a collection of button-like
 *	widgets for the Tk toolkit.  The widgets implemented
 *	include labels, buttons, check buttons, and radio
 *	buttons.
 *
 * Copyright (c) 1990-1994 The Regents of the University of California.
 * Copyright (c) 1994-1995 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: @(#) tkButton.c 1.144 97/07/31 09:04:57
 */

#include "tkButton.h"
#include "default.h"

/*
 * Class names for buttons, indexed by one of the type values above.
 */

static char *classNames[] = {"Label", "Button", "Checkbutton", "Radiobutton"};

/*
 * The class procedure table for the button widget.
 */

static int configFlags[] = {LABEL_MASK, BUTTON_MASK,
	CHECK_BUTTON_MASK, RADIO_BUTTON_MASK};

/*
 * Information used for parsing configuration specs:
 */

Tk_ConfigSpec tkpButtonConfigSpecs[] = {
    {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
	DEF_BUTTON_ACTIVE_BG_COLOR, Tk_Offset(TkButton, activeBorder),
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
	|TK_CONFIG_COLOR_ONLY},
    {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground",
	DEF_BUTTON_ACTIVE_BG_MONO, Tk_Offset(TkButton, activeBorder),
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
	|TK_CONFIG_MONO_ONLY},
    {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
	DEF_BUTTON_ACTIVE_FG_COLOR, Tk_Offset(TkButton, activeFg), 
	BUTTON_MASK|TK_CONFIG_COLOR_ONLY},
    {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
	DEF_CHKRAD_ACTIVE_FG_COLOR, Tk_Offset(TkButton, activeFg), 
	CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY},
    {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background",
	DEF_BUTTON_ACTIVE_FG_MONO, Tk_Offset(TkButton, activeFg), 
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK
	|TK_CONFIG_MONO_ONLY},
    {TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",
	DEF_BUTTON_ANCHOR, Tk_Offset(TkButton, anchor), ALL_MASK},
    {TK_CONFIG_BORDER, "-background", "background", "Background",
	DEF_BUTTON_BG_COLOR, Tk_Offset(TkButton, normalBorder),
	ALL_MASK | TK_CONFIG_COLOR_ONLY},
    {TK_CONFIG_BORDER, "-background", "background", "Background",
	DEF_BUTTON_BG_MONO, Tk_Offset(TkButton, normalBorder),
	ALL_MASK | TK_CONFIG_MONO_ONLY},
    {TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
	(char *) NULL, 0, ALL_MASK},
    {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
	(char *) NULL, 0, ALL_MASK},
    {TK_CONFIG_BITMAP, "-bitmap", "bitmap", "Bitmap",
	DEF_BUTTON_BITMAP, Tk_Offset(TkButton, bitmap),
	ALL_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
	DEF_BUTTON_BORDER_WIDTH, Tk_Offset(TkButton, borderWidth), ALL_MASK},
    {TK_CONFIG_STRING, "-command", "command", "Command",
	DEF_BUTTON_COMMAND, Tk_Offset(TkButton, command),
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
	DEF_BUTTON_CURSOR, Tk_Offset(TkButton, cursor),
	ALL_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_UID, "-default", "default", "Default",
        DEF_BUTTON_DEFAULT, Tk_Offset(TkButton, defaultState), BUTTON_MASK},
    {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
	"DisabledForeground", DEF_BUTTON_DISABLED_FG_COLOR,
	Tk_Offset(TkButton, disabledFg), BUTTON_MASK|CHECK_BUTTON_MASK
	|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK},
    {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground",
	"DisabledForeground", DEF_BUTTON_DISABLED_FG_MONO,
	Tk_Offset(TkButton, disabledFg), BUTTON_MASK|CHECK_BUTTON_MASK
	|RADIO_BUTTON_MASK|TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK},
    {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
	(char *) NULL, 0, ALL_MASK},
    {TK_CONFIG_FONT, "-font", "font", "Font",
	DEF_BUTTON_FONT, Tk_Offset(TkButton, tkfont),
	ALL_MASK},
    {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
	DEF_BUTTON_FG, Tk_Offset(TkButton, normalFg), LABEL_MASK|BUTTON_MASK},
    {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
	DEF_CHKRAD_FG, Tk_Offset(TkButton, normalFg), CHECK_BUTTON_MASK
	|RADIO_BUTTON_MASK},
    {TK_CONFIG_STRING, "-height", "height", "Height",
	DEF_BUTTON_HEIGHT, Tk_Offset(TkButton, heightString), ALL_MASK},
    {TK_CONFIG_BORDER, "-highlightbackground", "highlightBackground",
	"HighlightBackground", DEF_BUTTON_HIGHLIGHT_BG,
	Tk_Offset(TkButton, highlightBorder), ALL_MASK},
    {TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
	DEF_BUTTON_HIGHLIGHT, Tk_Offset(TkButton, highlightColorPtr),
	ALL_MASK},
    {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
	"HighlightThickness",
	DEF_LABEL_HIGHLIGHT_WIDTH, Tk_Offset(TkButton, highlightWidth),
	LABEL_MASK},
    {TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
	"HighlightThickness",
	DEF_BUTTON_HIGHLIGHT_WIDTH, Tk_Offset(TkButton, highlightWidth),
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
    {TK_CONFIG_STRING, "-image", "image", "Image",
	DEF_BUTTON_IMAGE, Tk_Offset(TkButton, imageString),
	ALL_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_BOOLEAN, "-indicatoron", "indicatorOn", "IndicatorOn",
	DEF_BUTTON_INDICATOR, Tk_Offset(TkButton, indicatorOn),
	CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
    {TK_CONFIG_JUSTIFY, "-justify", "justify", "Justify",
	DEF_BUTTON_JUSTIFY, Tk_Offset(TkButton, justify), ALL_MASK},
    {TK_CONFIG_STRING, "-offvalue", "offValue", "Value",
	DEF_BUTTON_OFF_VALUE, Tk_Offset(TkButton, offValue),
	CHECK_BUTTON_MASK},
    {TK_CONFIG_STRING, "-onvalue", "onValue", "Value",
	DEF_BUTTON_ON_VALUE, Tk_Offset(TkButton, onValue),
	CHECK_BUTTON_MASK},
    {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
	DEF_BUTTON_PADX, Tk_Offset(TkButton, padX), BUTTON_MASK},
    {TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
	DEF_LABCHKRAD_PADX, Tk_Offset(TkButton, padX),
	LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
    {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
	DEF_BUTTON_PADY, Tk_Offset(TkButton, padY), BUTTON_MASK},
    {TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
	DEF_LABCHKRAD_PADY, Tk_Offset(TkButton, padY),
	LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
    {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
	DEF_BUTTON_RELIEF, Tk_Offset(TkButton, relief), BUTTON_MASK},
    {TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
	DEF_LABCHKRAD_RELIEF, Tk_Offset(TkButton, relief),
	LABEL_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
    {TK_CONFIG_BORDER, "-selectcolor", "selectColor", "Background",
	DEF_BUTTON_SELECT_COLOR, Tk_Offset(TkButton, selectBorder),
	CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_COLOR_ONLY
	|TK_CONFIG_NULL_OK},
    {TK_CONFIG_BORDER, "-selectcolor", "selectColor", "Background",
	DEF_BUTTON_SELECT_MONO, Tk_Offset(TkButton, selectBorder),
	CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_MONO_ONLY
	|TK_CONFIG_NULL_OK},
    {TK_CONFIG_STRING, "-selectimage", "selectImage", "SelectImage",
	DEF_BUTTON_SELECT_IMAGE, Tk_Offset(TkButton, selectImageString),
	CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_UID, "-state", "state", "State",
	DEF_BUTTON_STATE, Tk_Offset(TkButton, state),
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK},
    {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
	DEF_LABEL_TAKE_FOCUS, Tk_Offset(TkButton, takeFocus),
	LABEL_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
	DEF_BUTTON_TAKE_FOCUS, Tk_Offset(TkButton, takeFocus),
	BUTTON_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_STRING, "-text", "text", "Text",
	DEF_BUTTON_TEXT, Tk_Offset(TkButton, text), ALL_MASK},
    {TK_CONFIG_STRING, "-textvariable", "textVariable", "Variable",
	DEF_BUTTON_TEXT_VARIABLE, Tk_Offset(TkButton, textVarName),
	ALL_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_INT, "-underline", "underline", "Underline",
	DEF_BUTTON_UNDERLINE, Tk_Offset(TkButton, underline), ALL_MASK},
    {TK_CONFIG_STRING, "-value", "value", "Value",
	DEF_BUTTON_VALUE, Tk_Offset(TkButton, onValue),
	RADIO_BUTTON_MASK},
    {TK_CONFIG_STRING, "-variable", "variable", "Variable",
	DEF_RADIOBUTTON_VARIABLE, Tk_Offset(TkButton, selVarName),
	RADIO_BUTTON_MASK},
    {TK_CONFIG_STRING, "-variable", "variable", "Variable",
	DEF_CHECKBUTTON_VARIABLE, Tk_Offset(TkButton, selVarName),
	CHECK_BUTTON_MASK|TK_CONFIG_NULL_OK},
    {TK_CONFIG_STRING, "-width", "width", "Width",
	DEF_BUTTON_WIDTH, Tk_Offset(TkButton, widthString), ALL_MASK},
    {TK_CONFIG_PIXELS, "-wraplength", "wrapLength", "WrapLength",
	DEF_BUTTON_WRAP_LENGTH, Tk_Offset(TkButton, wrapLength), ALL_MASK},
    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
	(char *) NULL, 0, 0}
};

/*
 * String to print out in error messages, identifying options for
 * widget commands for different types of labels or buttons:
 */

static char *optionStrings[] = {
    "cget or configure",
    "cget, configure, flash, or invoke",
    "cget, configure, deselect, flash, invoke, select, or toggle",
    "cget, configure, deselect, flash, invoke, or select"
};

/*
 * Forward declarations for procedures defined later in this file:
 */

static void		ButtonCmdDeletedProc _ANSI_ARGS_((
			    ClientData clientData));
static int		ButtonCreate _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv,
			    int type));
static void		ButtonEventProc _ANSI_ARGS_((ClientData clientData,
			    XEvent *eventPtr));
static void		ButtonImageProc _ANSI_ARGS_((ClientData clientData,
			    int x, int y, int width, int height,
			    int imgWidth, int imgHeight));
static void		ButtonSelectImageProc _ANSI_ARGS_((
			    ClientData clientData, int x, int y, int width,
			    int height, int imgWidth, int imgHeight));
static char *		ButtonTextVarProc _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, char *name1, char *name2,
			    int flags));
static char *		ButtonVarProc _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, char *name1, char *name2,
			    int flags));
static int		ButtonWidgetCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, char **argv));
static int		ConfigureButton _ANSI_ARGS_((Tcl_Interp *interp,
			    TkButton *butPtr, int argc, char **argv,
			    int flags));
static void		DestroyButton _ANSI_ARGS_((TkButton *butPtr));


/*
 *--------------------------------------------------------------
 *
 * Tk_ButtonCmd, Tk_CheckbuttonCmd, Tk_LabelCmd, Tk_RadiobuttonCmd --
 *
 *	These procedures are invoked to process the "button", "label",
 *	"radiobutton", and "checkbutton" Tcl commands.  See the
 *	user documentation for details on what they do.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See the user documentation.  These procedures are just wrappers;
 *	they call ButtonCreate to do all of the real work.
 *
 *--------------------------------------------------------------
 */

int
Tk_ButtonCmd(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. */
{
    return ButtonCreate(clientData, interp, argc, argv, TYPE_BUTTON);
}

int
Tk_CheckbuttonCmd(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. */
{
    return ButtonCreate(clientData, interp, argc, argv, TYPE_CHECK_BUTTON);
}

int
Tk_LabelCmd(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. */
{
    return ButtonCreate(clientData, interp, argc, argv, TYPE_LABEL);
}

int
Tk_RadiobuttonCmd(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. */
{
    return ButtonCreate(clientData, interp, argc, argv, TYPE_RADIO_BUTTON);
}

/*
 *--------------------------------------------------------------
 *
 * ButtonCreate --
 *
 *	This procedure does all the real work of implementing 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.
 *
 *--------------------------------------------------------------
 */

static int
ButtonCreate(clientData, interp, argc, argv, type)
    ClientData clientData;	/* Main window associated with
				 * interpreter. */
    Tcl_Interp *interp;		/* Current interpreter. */
    int argc;			/* Number of arguments. */
    char **argv;		/* Argument strings. */
    int type;			/* Type of button to create: TYPE_LABEL,
				 * TYPE_BUTTON, TYPE_CHECK_BUTTON, or
				 * TYPE_RADIO_BUTTON. */
{
    register TkButton *butPtr;
    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, classNames[type]);
    butPtr = TkpCreateButton(new);

    TkSetClassProcs(new, &tkpButtonProcs, (ClientData) butPtr);

    /*
     * Initialize the data structure for the button.
     */

    butPtr->tkwin = new;
    butPtr->display = Tk_Display(new);
    butPtr->widgetCmd = Tcl_CreateCommand(interp, Tk_PathName(butPtr->tkwin),
	    ButtonWidgetCmd, (ClientData) butPtr, ButtonCmdDeletedProc);
    butPtr->interp = interp;
    butPtr->type = type;
    butPtr->text = NULL;
    butPtr->underline = -1;
    butPtr->textVarName = NULL;
    butPtr->bitmap = None;
    butPtr->imageString = NULL;
    butPtr->image = NULL;
    butPtr->selectImageString = NULL;
    butPtr->selectImage = NULL;
    butPtr->state = tkNormalUid;
    butPtr->normalBorder = NULL;
    butPtr->activeBorder = NULL;
    butPtr->borderWidth = 0;
    butPtr->relief = TK_RELIEF_FLAT;
    butPtr->highlightWidth = 0;
    butPtr->highlightBorder = NULL;
    butPtr->highlightColorPtr = NULL;
    butPtr->inset = 0;
    butPtr->tkfont = NULL;
    butPtr->normalFg = NULL;
    butPtr->activeFg = NULL;
    butPtr->disabledFg = NULL;
    butPtr->normalTextGC = None;
    butPtr->activeTextGC = None;
    butPtr->gray = None;
    butPtr->disabledGC = None;
    butPtr->copyGC = None;
    butPtr->widthString = NULL;
    butPtr->heightString = NULL;
    butPtr->width = 0;
    butPtr->height = 0;
    butPtr->wrapLength = 0;
    butPtr->padX = 0;
    butPtr->padY = 0;
    butPtr->anchor = TK_ANCHOR_CENTER;
    butPtr->justify = TK_JUSTIFY_CENTER;
    butPtr->textLayout = NULL;
    butPtr->indicatorOn = 0;
    butPtr->selectBorder = NULL;
    butPtr->indicatorSpace = 0;
    butPtr->indicatorDiameter = 0;
    butPtr->defaultState = tkDisabledUid;
    butPtr->selVarName = NULL;
    butPtr->onValue = NULL;
    butPtr->offValue = NULL;
    butPtr->cursor = None;
    butPtr->command = NULL;
    butPtr->takeFocus = NULL;
    butPtr->flags = 0;

    Tk_CreateEventHandler(butPtr->tkwin,
	    ExposureMask|StructureNotifyMask|FocusChangeMask,
	    ButtonEventProc, (ClientData) butPtr);

    if (ConfigureButton(interp, butPtr, argc - 2, argv + 2,
	    configFlags[type]) != TCL_OK) {
	Tk_DestroyWindow(butPtr->tkwin);
	return TCL_ERROR;
    }

    interp->result = Tk_PathName(butPtr->tkwin);
    return TCL_OK;
}

/*
 *--------------------------------------------------------------
 *
 * ButtonWidgetCmd --
 *
 *	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
ButtonWidgetCmd(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 TkButton *butPtr = (TkButton *) clientData;
    int result = TCL_OK;
    size_t length;
    int c;