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stk/Tk/generic/tkMenu.h

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/*
* tkMenu.h --
*
* Declarations shared among all of the files that implement menu widgets.
*
* Copyright (c) 1996-1997 by 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: @(#) tkMenu.h 1.60 97/06/20 14:43:21
*/
#ifndef _TKMENU
#define _TKMENU
#ifndef _TK
#include "tk.h"
#endif
#ifndef _TKINT
#include "tkInt.h"
#endif
#ifndef _DEFAULT
#include "default.h"
#endif
#ifdef BUILD_tk
# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLEXPORT
#endif
/*
* Dummy types used by the platform menu code.
*/
typedef struct TkMenuPlatformData_ *TkMenuPlatformData;
typedef struct TkMenuPlatformEntryData_ *TkMenuPlatformEntryData;
/*
* One of the following data structures is kept for each entry of each
* menu managed by this file:
*/
typedef struct TkMenuEntry {
int type; /* Type of menu entry; see below for
* valid types. */
struct TkMenu *menuPtr; /* Menu with which this entry is associated. */
char *label; /* Main text label displayed in entry (NULL
* if no label). Malloc'ed. */
int labelLength; /* Number of non-NULL characters in label. */
Tk_Uid state; /* State of button for display purposes:
* normal, active, or disabled. */
int underline; /* Index of character to underline. */
Pixmap bitmap; /* Bitmap to display in menu entry, or None.
* If not None then label is ignored. */
char *imageString; /* Name of image to display (malloc'ed), or
* NULL. If non-NULL, bitmap, text, and
* textVarName are ignored. */
Tk_Image image; /* Image to display in menu entry, or NULL if
* none. */
char *selectImageString; /* Name of image to display when selected
* (malloc'ed), or NULL. */
Tk_Image selectImage; /* Image to display in entry when selected,
* or NULL if none. Ignored if image is
* NULL. */
char *accel; /* Accelerator string displayed at right
* of menu entry. NULL means no such
* accelerator. Malloc'ed. */
int accelLength; /* Number of non-NULL characters in
* accelerator. */
int indicatorOn; /* True means draw indicator, false means
* don't draw it. */
/*
* Display attributes
*/
Tk_3DBorder border; /* Structure used to draw background for
* entry. NULL means use overall border
* for menu. */
XColor *fg; /* Foreground color to use for entry. NULL
* means use foreground color from menu. */
Tk_3DBorder activeBorder; /* Used to draw background and border when
* element is active. NULL means use
* activeBorder from menu. */
XColor *activeFg; /* Foreground color to use when entry is
* active. NULL means use active foreground
* from menu. */
XColor *indicatorFg; /* Color for indicators in radio and check
* button entries. NULL means use indicatorFg
* GC from menu. */
Tk_Font tkfont; /* Text font for menu entries. NULL means
* use overall font for menu. */
int columnBreak; /* If this is 0, this item appears below
* the item in front of it. If this is
* 1, this item starts a new column. */
int hideMargin; /* If this is 0, then the item has enough
* margin to accomodate a standard check
* mark and a default right margin. If this
* is 1, then the item has no such margins.
* and checkbuttons and radiobuttons with
* this set will have a rectangle drawn
* in the indicator around the item if
* the item is checked.
* This is useful palette menus.*/
int indicatorSpace; /* The width of the indicator space for this
* entry.
*/
int labelWidth; /* Number of pixels to allow for displaying
* labels in menu entries. */
/*
* Information used to implement this entry's action:
*/
char *command; /* Command to invoke when entry is invoked.
* Malloc'ed. */
char *name; /* Name of variable (for check buttons and
* radio buttons) or menu (for cascade
* entries). Malloc'ed.*/
char *onValue; /* Value to store in variable when selected
* (only for radio and check buttons).
* Malloc'ed. */
char *offValue; /* Value to store in variable when not
* selected (only for check buttons).
* Malloc'ed. */
/*
* Information used for drawing this menu entry.
*/
int width; /* Number of pixels occupied by entry in
* horizontal dimension. Not used except
* in menubars. The width of norma menus
* is dependent on the rest of the menu. */
int x; /* X-coordinate of leftmost pixel in entry */
int height; /* Number of pixels occupied by entry in
* vertical dimension, including raised
* border drawn around entry when active. */
int y; /* Y-coordinate of topmost pixel in entry. */
GC textGC; /* GC for drawing text in entry. NULL means
* use overall textGC for menu. */
GC activeGC; /* GC for drawing text in entry when active.
* NULL means use overall activeGC for
* menu. */
GC disabledGC; /* Used to produce disabled effect for entry.
* NULL means use overall disabledGC from
* menu structure. See comments for
* disabledFg in menu structure for more
* information. */
GC indicatorGC; /* For drawing indicators. None means use
* GC from menu. */
/*
* Miscellaneous fields.
*/
int entryFlags; /* Various flags. See below for
definitions. */
int index; /* Need to know which index we are. This
* is zero-based. This is the top-left entry
* of the menu. */
/*
* Bookeeping for master menus and cascade menus.
*/
struct TkMenuReferences *childMenuRefPtr;
/* A pointer to the hash table entry for
* the child menu. Stored here when the menu
* entry is configured so that a hash lookup
* is not necessary later.*/
struct TkMenuEntry *nextCascadePtr;
/* The next cascade entry that is a parent of
* this entry's child cascade menu. NULL
* end of list, this is not a cascade entry,
* or the menu that this entry point to
* does not yet exist. */
TkMenuPlatformEntryData platformEntryData;
/* The data for the specific type of menu.
* Depends on platform and menu type what
* kind of options are in this structure.
*/
#ifdef SCM_CODE
char *env; /* -variable environment */
#endif
#ifdef BGLK_CODE
char *highlightthickness; /* dummy biglook highlightthickness */
#endif
} TkMenuEntry;
/*
* Flag values defined for menu entries:
*
* ENTRY_SELECTED: Non-zero means this is a radio or check
* button and that it should be drawn in
* the "selected" state.
* ENTRY_NEEDS_REDISPLAY: Non-zero means the entry should be redisplayed.
* ENTRY_LAST_COLUMN: Used by the drawing code. If the entry is in the
* last column, the space to its right needs to
* be filled.
* ENTRY_PLATFORM_FLAG1 - 4 These flags are reserved for use by the
* platform-dependent implementation of menus
* and should not be used by anything else.
*/
#define ENTRY_SELECTED 1
#define ENTRY_NEEDS_REDISPLAY 2
#define ENTRY_LAST_COLUMN 4
#define ENTRY_PLATFORM_FLAG1 (1 << 30)
#define ENTRY_PLATFORM_FLAG2 (1 << 29)
#define ENTRY_PLATFORM_FLAG3 (1 << 28)
#define ENTRY_PLATFORM_FLAG4 (1 << 27)
/*
* Types defined for MenuEntries:
*/
#define COMMAND_ENTRY 0
#define SEPARATOR_ENTRY 1
#define CHECK_BUTTON_ENTRY 2
#define RADIO_BUTTON_ENTRY 3
#define CASCADE_ENTRY 4
#define TEAROFF_ENTRY 5
/*
* Mask bits for above types:
*/
#define COMMAND_MASK TK_CONFIG_USER_BIT
#define SEPARATOR_MASK (TK_CONFIG_USER_BIT << 1)
#define CHECK_BUTTON_MASK (TK_CONFIG_USER_BIT << 2)
#define RADIO_BUTTON_MASK (TK_CONFIG_USER_BIT << 3)
#define CASCADE_MASK (TK_CONFIG_USER_BIT << 4)
#define TEAROFF_MASK (TK_CONFIG_USER_BIT << 5)
#define ALL_MASK (COMMAND_MASK | SEPARATOR_MASK \
| CHECK_BUTTON_MASK | RADIO_BUTTON_MASK | CASCADE_MASK | TEAROFF_MASK)
/*
* A data structure of the following type is kept for each
* menu widget:
*/
typedef struct TkMenu {
Tk_Window tkwin; /* Window that embodies the pane. NULL
* means that the window has been destroyed
* but the data structures haven't yet been
* cleaned up.*/
Display *display; /* Display containing widget. Needed, among
* other things, so that resources can be
* freed up even after tkwin has gone away. */
Tcl_Interp *interp; /* Interpreter associated with menu. */
Tcl_Command widgetCmd; /* Token for menu's widget command. */
TkMenuEntry **entries; /* Array of pointers to all the entries
* in the menu. NULL means no entries. */
int numEntries; /* Number of elements in entries. */
int active; /* Index of active entry. -1 means
* nothing active. */
int menuType; /* MASTER_MENU, TEAROFF_MENU, or MENUBAR.
* See below for definitions. */
char *menuTypeName; /* Used to control whether created tkwin
* is a toplevel or not. "normal", "menubar",
* or "toplevel" */
/*
* Information used when displaying widget:
*/
Tk_3DBorder border; /* Structure used to draw 3-D
* border and background for menu. */
int borderWidth; /* Width of border around whole menu. */
Tk_3DBorder activeBorder; /* Used to draw background and border for
* active element (if any). */
int activeBorderWidth; /* Width of border around active element. */
int relief; /* 3-d effect: TK_RELIEF_RAISED, etc. */
Tk_Font tkfont; /* Text font for menu entries. */
XColor *fg; /* Foreground color for entries. */
XColor *disabledFg; /* Foreground color when disabled. NULL
* means use normalFg with a 50% stipple
* instead. */
XColor *activeFg; /* Foreground color for active entry. */
XColor *indicatorFg; /* Color for indicators in radio and check
* button entries. */
Pixmap gray; /* Bitmap for drawing disabled entries in
* a stippled fashion. None means not
* allocated yet. */
GC textGC; /* GC for drawing text and other features
* of menu entries. */
GC disabledGC; /* Used to produce disabled effect. If
* disabledFg isn't NULL, this GC is used to
* draw text and icons for disabled entries.
* Otherwise text and icons are drawn with
* normalGC and this GC is used to stipple
* background across them. */
GC activeGC; /* GC for drawing active entry. */
GC indicatorGC; /* For drawing indicators. */
GC disabledImageGC; /* Used for drawing disabled images. They
* have to be stippled. This is created
* when the image is about to be drawn the
* first time. */
/*
* Information about geometry of menu.
*/
int totalWidth; /* Width of entire menu */
int totalHeight; /* Height of entire menu */
/*
* Miscellaneous information:
*/
int tearOff; /* 1 means this menu can be torn off. On some
* platforms, the user can drag an outline
* of the menu by just dragging outside of
* the menu, and the tearoff is created where
* the mouse is released. On others, an
* indicator (such as a dashed stripe) is
* drawn, and when the menu is selected, the
* tearoff is created. */
char *title; /* The title to use when this menu is torn
* off. If this is NULL, a default scheme
* will be used to generate a title for
* tearoff. */
char *tearOffCommand; /* If non-NULL, points to a command to
* run whenever the menu is torn-off. */
char *takeFocus; /* Value of -takefocus option; not used in
* the C code, but used by keyboard traversal
* scripts. Malloc'ed, but may be NULL. */
Tk_Cursor cursor; /* Current cursor for window, or None. */
char *postCommand; /* Used to detect cycles in cascade hierarchy
* trees when preprocessing postcommands
* on some platforms. See PostMenu for
* more details. */
int postCommandGeneration; /* Need to do pre-invocation post command
* traversal */
int menuFlags; /* Flags for use by X; see below for
definition */
TkMenuEntry *postedCascade; /* Points to menu entry for cascaded submenu
* that is currently posted or NULL if no
* submenu posted. */
struct TkMenu *nextInstancePtr;
/* The next instance of this menu in the
* chain. */
struct TkMenu *masterMenuPtr;
/* A pointer to the original menu for this
* clone chain. Points back to this structure
* if this menu is a master menu. */
Tk_Window parentTopLevelPtr;/* If this menu is a menubar, this is the
* toplevel that owns the menu. Only applicable
* for menubar clones.
*/
struct TkMenuReferences *menuRefPtr;
/* Each menu is hashed into a table with the
* name of the menu's window as the key.
* The information in this hash table includes
* a pointer to the menu (so that cascades
* can find this menu), a pointer to the
* list of toplevel widgets that have this
* menu as its menubar, and a list of menu
* entries that have this menu specified
* as a cascade. */
TkMenuPlatformData platformData;
/* The data for the specific type of menu.
* Depends on platform and menu type what
* kind of options are in this structure.
*/
} TkMenu;
/*
* When the toplevel configure -menu command is executed, the menu may not
* exist yet. We need to keep a linked list of windows that reference
* a particular menu.
*/
typedef struct TkMenuTopLevelList {
struct TkMenuTopLevelList *nextPtr;
/* The next window in the list */
Tk_Window tkwin; /* The window that has this menu as its
* menubar. */
} TkMenuTopLevelList;
/*
* The following structure is used to keep track of things which
* reference a menu. It is created when:
* - a menu is created.
* - a cascade entry is added to a menu with a non-null name
* - the "-menu" configuration option is used on a toplevel widget
* with a non-null parameter.
*
* One of these three fields must be non-NULL, but any of the fields may
* be NULL. This structure makes it easy to determine whether or not
* anything like recalculating platform data or geometry is necessary
* when one of the three actions above is performed.
*/
typedef struct TkMenuReferences {
struct TkMenu *menuPtr; /* The menu data structure. This is NULL
* if the menu does not exist. */
TkMenuTopLevelList *topLevelListPtr;
/* First in the list of all toplevels that
* have this menu as its menubar. NULL if no
* toplevel widgets have this menu as its
* menubar. */
TkMenuEntry *parentEntryPtr;/* First in the list of all cascade menu
* entries that have this menu as their child.
* NULL means no cascade entries. */
Tcl_HashEntry *hashEntryPtr;/* This is needed because the pathname of the
* window (which is what we hash on) may not
* be around when we are deleting.
*/
} TkMenuReferences;
/*
* Flag bits for menus:
*
* REDRAW_PENDING: Non-zero means a DoWhenIdle handler
* has already been queued to redraw
* this window.
* RESIZE_PENDING: Non-zero means a call to ComputeMenuGeometry
* has already been scheduled.
* MENU_DELETION_PENDING Non-zero means that we are currently destroying
* this menu. This is useful when we are in the
* middle of cleaning this master menu's chain of
* menus up when TkDestroyMenu was called again on
* this menu (via a destroy binding or somesuch).
* MENU_PLATFORM_FLAG1... Reserved for use by the platform-specific menu
* code.
*/
#define REDRAW_PENDING 1
#define RESIZE_PENDING 2
#define MENU_DELETION_PENDING 4
#define MENU_PLATFORM_FLAG1 (1 << 30)
#define MENU_PLATFORM_FLAG2 (1 << 29)
#define MENU_PLATFORM_FLAG3 (1 << 28)
/*
* Each menu created by the user is a MASTER_MENU. When a menu is torn off,
* a TEAROFF_MENU instance is created. When a menu is assigned to a toplevel
* as a menu bar, a MENUBAR instance is created. All instances have the same
* configuration information. If the master instance is deleted, all instances
* are deleted. If one of the other instances is deleted, only that instance
* is deleted.
*/
#define UNKNOWN_TYPE -1
#define MASTER_MENU 0
#define TEAROFF_MENU 1
#define MENUBAR 2
/*
* Various geometry definitions:
*/
#define CASCADE_ARROW_HEIGHT 10
#define CASCADE_ARROW_WIDTH 8
#define DECORATION_BORDER_WIDTH 2
/*
* Configuration specs. Needed for platform-specific default initializations.
*/
EXTERN Tk_ConfigSpec tkMenuEntryConfigSpecs[];
EXTERN Tk_ConfigSpec tkMenuConfigSpecs[];
/*
* Menu-related procedures that are shared among Tk modules but not exported
* to the outside world:
*/
EXTERN int TkActivateMenuEntry _ANSI_ARGS_((TkMenu *menuPtr,
int index));
EXTERN void TkBindMenu _ANSI_ARGS_((
Tk_Window tkwin, TkMenu *menuPtr));
EXTERN TkMenuReferences *
TkCreateMenuReferences _ANSI_ARGS_((Tcl_Interp *interp,
char *pathName));
EXTERN void TkDestroyMenu _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkEventuallyRecomputeMenu _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkEventuallyRedrawMenu _ANSI_ARGS_((
TkMenu *menuPtr, TkMenuEntry *mePtr));
EXTERN TkMenuReferences *
TkFindMenuReferences _ANSI_ARGS_((Tcl_Interp *interp,
char *pathName));
EXTERN void TkFreeMenuReferences _ANSI_ARGS_((
TkMenuReferences *menuRefPtr));
EXTERN Tcl_HashTable * TkGetMenuHashTable _ANSI_ARGS_((Tcl_Interp *interp));
EXTERN int TkGetMenuIndex _ANSI_ARGS_((Tcl_Interp *interp,
TkMenu *menuPtr, char *string, int lastOK,
int *indexPtr));
EXTERN void TkMenuInitializeDrawingFields _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkMenuInitializeEntryDrawingFields _ANSI_ARGS_((
TkMenuEntry *mePtr));
EXTERN int TkInvokeMenu _ANSI_ARGS_((Tcl_Interp *interp,
TkMenu *menuPtr, int index));
EXTERN void TkMenuConfigureDrawOptions _ANSI_ARGS_((
TkMenu *menuPtr));
EXTERN int TkMenuConfigureEntryDrawOptions _ANSI_ARGS_((
TkMenuEntry *mePtr, int index));
EXTERN void TkMenuFreeDrawOptions _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkMenuEntryFreeDrawOptions _ANSI_ARGS_((
TkMenuEntry *mePtr));
EXTERN void TkMenuEventProc _ANSI_ARGS_((ClientData clientData,
XEvent *eventPtr));
EXTERN void TkMenuImageProc _ANSI_ARGS_((
ClientData clientData, int x, int y, int width,
int height, int imgWidth, int imgHeight));
EXTERN void TkMenuInit _ANSI_ARGS_((void));
EXTERN void TkMenuSelectImageProc _ANSI_ARGS_
((ClientData clientData, int x, int y,
int width, int height, int imgWidth,
int imgHeight));
EXTERN char * TkNewMenuName _ANSI_ARGS_((Tcl_Interp *interp,
char *parentName, TkMenu *menuPtr));
EXTERN int TkPostCommand _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN int TkPostSubmenu _ANSI_ARGS_((Tcl_Interp *interp,
TkMenu *menuPtr, TkMenuEntry *mePtr));
EXTERN int TkPostTearoffMenu _ANSI_ARGS_((Tcl_Interp *interp,
TkMenu *menuPtr, int x, int y));
EXTERN int TkPreprocessMenu _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkRecomputeMenu _ANSI_ARGS_((TkMenu *menuPtr));
/*
* These routines are the platform-dependent routines called by the
* common code.
*/
EXTERN void TkpComputeMenubarGeometry _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkpComputeStandardMenuGeometry _ANSI_ARGS_
((TkMenu *menuPtr));
EXTERN int TkpConfigureMenuEntry
_ANSI_ARGS_((TkMenuEntry *mePtr));
EXTERN void TkpDestroyMenu _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN void TkpDestroyMenuEntry
_ANSI_ARGS_((TkMenuEntry *mEntryPtr));
EXTERN void TkpDrawMenuEntry _ANSI_ARGS_((TkMenuEntry *mePtr,
Drawable d, Tk_Font tkfont,
CONST Tk_FontMetrics *menuMetricsPtr, int x,
int y, int width, int height, int strictMotif,
int drawArrow));
EXTERN void TkpMenuInit _ANSI_ARGS_((void));
EXTERN int TkpMenuNewEntry _ANSI_ARGS_((TkMenuEntry *mePtr));
EXTERN int TkpNewMenu _ANSI_ARGS_((TkMenu *menuPtr));
EXTERN int TkpPostMenu _ANSI_ARGS_((Tcl_Interp *interp,
TkMenu *menuPtr, int x, int y));
EXTERN void TkpSetWindowMenuBar _ANSI_ARGS_((Tk_Window tkwin,
TkMenu *menuPtr));
# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLIMPORT
#endif /* _TKMENU */
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