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/*
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* tkMenubutton.h --
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*
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* Declarations of types and functions used to implement
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* the menubutton widget.
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*
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* Copyright (c) 1996-1997 by Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tkMenubutton.h,v 1.1.1.1 2002-01-16 10:25:52 markom Exp $
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*/
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#ifndef _TKMENUBUTTON
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#define _TKMENUBUTTON
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#ifndef _TKINT
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#include "tkInt.h"
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#endif
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#ifdef BUILD_tk
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# undef TCL_STORAGE_CLASS
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# define TCL_STORAGE_CLASS DLLEXPORT
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#endif
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/*
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* A data structure of the following type is kept for each
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* widget managed by this file:
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*/
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typedef struct {
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Tk_Window tkwin; /* Window that embodies the widget. NULL
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* means that the window has been destroyed
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* but the data structures haven't yet been
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* cleaned up.*/
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Display *display; /* Display containing widget. Needed, among
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* other things, so that resources can bee
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* freed up even after tkwin has gone away. */
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Tcl_Interp *interp; /* Interpreter associated with menubutton. */
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Tcl_Command widgetCmd; /* Token for menubutton's widget command. */
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char *menuName; /* Name of menu associated with widget.
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* Malloc-ed. */
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/*
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* Information about what's displayed in the menu button:
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*/
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char *text; /* Text to display in button (malloc'ed)
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* or NULL. */
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int underline; /* Index of character to underline. */
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char *textVarName; /* Name of variable (malloc'ed) or NULL.
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* If non-NULL, button displays the contents
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* of this variable. */
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Pixmap bitmap; /* Bitmap to display or None. If not None
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* then text and textVar and underline
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* are ignored. */
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char *imageString; /* Name of image to display (malloc'ed), or
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* NULL. If non-NULL, bitmap, text, and
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* textVarName are ignored. */
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Tk_Image image; /* Image to display in window, or NULL if
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* none. */
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/*
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* Information used when displaying widget:
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*/
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Tk_Uid state; /* State of button for display purposes:
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* normal, active, or disabled. */
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Tk_3DBorder normalBorder; /* Structure used to draw 3-D
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* border and background when window
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* isn't active. NULL means no such
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* border exists. */
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Tk_3DBorder activeBorder; /* Structure used to draw 3-D
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* border and background when window
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* is active. NULL means no such
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* border exists. */
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int borderWidth; /* Width of border. */
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int relief; /* 3-d effect: TK_RELIEF_RAISED, etc. */
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int highlightWidth; /* Width in pixels of highlight to draw
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* around widget when it has the focus.
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* <= 0 means don't draw a highlight. */
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XColor *highlightBgColorPtr;
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/* Color for drawing traversal highlight
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* area when highlight is off. */
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XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
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int inset; /* Total width of all borders, including
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* traversal highlight and 3-D border.
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* Indicates how much interior stuff must
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* be offset from outside edges to leave
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* room for borders. */
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Tk_Font tkfont; /* Information about text font, or NULL. */
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XColor *normalFg; /* Foreground color in normal mode. */
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XColor *activeFg; /* Foreground color in active mode. NULL
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* means use normalFg instead. */
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XColor *disabledFg; /* Foreground color when disabled. NULL
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* means use normalFg with a 50% stipple
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* instead. */
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GC normalTextGC; /* GC for drawing text in normal mode. */
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GC activeTextGC; /* GC for drawing text in active mode (NULL
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* means use normalTextGC). */
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Pixmap gray; /* Pixmap for displaying disabled text/icon if
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* disabledFg is NULL. */
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GC disabledGC; /* Used to produce disabled effect. If
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* disabledFg isn't NULL, this GC is used to
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* draw button text or icon. Otherwise
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* text or icon is drawn with normalGC and
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* this GC is used to stipple background
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* across it. */
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int leftBearing; /* Distance from text origin to leftmost drawn
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* pixel (positive means to right). */
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int rightBearing; /* Amount text sticks right from its origin. */
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char *widthString; /* Value of -width option. Malloc'ed. */
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char *heightString; /* Value of -height option. Malloc'ed. */
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int width, height; /* If > 0, these specify dimensions to request
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* for window, in characters for text and in
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* pixels for bitmaps. In this case the actual
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* size of the text string or bitmap is
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* ignored in computing desired window size. */
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int wrapLength; /* Line length (in pixels) at which to wrap
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* onto next line. <= 0 means don't wrap
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* except at newlines. */
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int padX, padY; /* Extra space around text or bitmap (pixels
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* on each side). */
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Tk_Anchor anchor; /* Where text/bitmap should be displayed
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* inside window region. */
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Tk_Justify justify; /* Justification to use for multi-line text. */
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int textWidth; /* Width needed to display text as requested,
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* in pixels. */
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int textHeight; /* Height needed to display text as requested,
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* in pixels. */
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Tk_TextLayout textLayout; /* Saved text layout information. */
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int indicatorOn; /* Non-zero means display indicator; 0 means
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* don't display. */
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int indicatorHeight; /* Height of indicator in pixels. This same
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* amount of extra space is also left on each
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* side of the indicator. 0 if no indicator. */
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int indicatorWidth; /* Width of indicator in pixels, including
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* indicatorHeight in padding on each side.
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* 0 if no indicator. */
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/*
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* Miscellaneous information:
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*/
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Tk_Uid direction; /* Direction for where to pop the menu.
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* Valid directions are "above", "below",
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* "left", "right", and "flush". "flush"
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* means that the upper left corner of the
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* menubutton is where the menu pops up.
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* "above" and "below" will attempt to pop
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* the menu compleletly above or below
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* the menu respectively.
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* "left" and "right" will pop the menu
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* left or right, and the active item
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* will be next to the button. */
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Tk_Cursor cursor; /* Current cursor for window, or None. */
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char *takeFocus; /* Value of -takefocus option; not used in
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* the C code, but used by keyboard traversal
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* scripts. Malloc'ed, but may be NULL. */
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int flags; /* Various flags; see below for
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* definitions. */
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} TkMenuButton;
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/*
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* Flag bits for buttons:
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*
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* REDRAW_PENDING: Non-zero means a DoWhenIdle handler
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* has already been queued to redraw
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* this window.
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* POSTED: Non-zero means that the menu associated
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* with this button has been posted (typically
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* because of an active button press).
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* GOT_FOCUS: Non-zero means this button currently
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* has the input focus.
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*/
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#define REDRAW_PENDING 1
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#define POSTED 2
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#define GOT_FOCUS 4
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/*
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* The following constants define the dimensions of the cascade indicator,
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* which is displayed if the "-indicatoron" option is true. The units for
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* these options are 1/10 millimeters.
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*/
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#define INDICATOR_WIDTH 40
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#define INDICATOR_HEIGHT 17
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/*
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* Declaration of variables shared between the files in the button module.
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*/
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extern TkClassProcs tkpMenubuttonClass;
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/*
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* Declaration of procedures used in the implementation of the button
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* widget.
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*/
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EXTERN void TkpComputeMenuButtonGeometry _ANSI_ARGS_((
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TkMenuButton *mbPtr));
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EXTERN TkMenuButton * TkpCreateMenuButton _ANSI_ARGS_((Tk_Window tkwin));
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EXTERN void TkpDisplayMenuButton _ANSI_ARGS_((
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ClientData clientData));
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EXTERN void TkpDestroyMenuButton _ANSI_ARGS_((
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TkMenuButton *mbPtr));
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EXTERN void TkMenuButtonWorldChanged _ANSI_ARGS_((
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ClientData instanceData));
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# undef TCL_STORAGE_CLASS
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# define TCL_STORAGE_CLASS DLLIMPORT
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#endif /* _TKMENUBUTTON */
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