ref: 9eaba52cafcac7c2f3bfc72d7be1f15893196be1
dir: /DoConfig/fltk/FL/Fl_Menu_.H/
//
// "$Id$"
//
// Menu base class header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2016 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
/* \file
Fl_Menu_ widget . */
#ifndef Fl_Menu__H
#define Fl_Menu__H
#ifndef Fl_Widget_H
#include "Fl_Widget.H"
#endif
#include "Fl_Menu_Item.H"
/**
Base class of all widgets that have a menu in FLTK.
Currently FLTK provides you with Fl_Menu_Button, Fl_Menu_Bar, and Fl_Choice.
The class contains a pointer to an array of structures of type Fl_Menu_Item.
The array may either be supplied directly by the user program, or it may
be "private": a dynamically allocated array managed by the Fl_Menu_.
When the user clicks a menu item, value() is set to that item
and then:
- If the Fl_Menu_Item has a callback set, that callback
is invoked with any userdata configured for it.
(The Fl_Menu_ widget's callback is NOT invoked.)
- For any Fl_Menu_Items that \b don't have a callback set,
the Fl_Menu_ widget's callback is invoked with any userdata
configured for it. The callback can determine which item
was picked using value(), mvalue(), item_pathname(), etc.
*/
class FL_EXPORT Fl_Menu_ : public Fl_Widget {
Fl_Menu_Item *menu_;
const Fl_Menu_Item *value_;
protected:
uchar alloc; // flag indicates if menu_ is a dynamic copy (=1) or not (=0)
uchar down_box_;
Fl_Font textfont_;
Fl_Fontsize textsize_;
Fl_Color textcolor_;
int item_pathname_(char *name, int namelen, const Fl_Menu_Item *finditem,
const Fl_Menu_Item *menu=0) const;
public:
Fl_Menu_(int,int,int,int,const char * =0);
~Fl_Menu_();
int item_pathname(char *name, int namelen, const Fl_Menu_Item *finditem=0) const;
const Fl_Menu_Item* picked(const Fl_Menu_Item*);
const Fl_Menu_Item* find_item(const char *name);
const Fl_Menu_Item* find_item(Fl_Callback*);
int find_index(const char *name) const;
int find_index(const Fl_Menu_Item *item) const;
int find_index(Fl_Callback *cb) const;
/**
Returns the menu item with the entered shortcut (key value).
This searches the complete menu() for a shortcut that matches the
entered key value. It must be called for a FL_KEYBOARD or FL_SHORTCUT
event.
If a match is found, the menu's callback will be called.
\return matched Fl_Menu_Item or NULL.
*/
const Fl_Menu_Item* test_shortcut() {return picked(menu()->test_shortcut());}
void global();
/**
Returns a pointer to the array of Fl_Menu_Items. This will either be
the value passed to menu(value) or the private copy.
\sa size() -- returns the size of the Fl_Menu_Item array.
\b Example: How to walk the array:
\code
for ( int t=0; t<menubar->size(); t++ ) { // walk array of items
const Fl_Menu_Item &item = menubar->menu()[t]; // get each item
fprintf(stderr, "item #%d -- label=%s, value=%s type=%s\n",
t,
item.label() ? item.label() : "(Null)", // menu terminators have NULL labels
(item.flags & FL_MENU_VALUE) ? "set" : "clear", // value of toggle or radio items
(item.flags & FL_SUBMENU) ? "Submenu" : "Item"); // see if item is a submenu or actual item
}
\endcode
*/
const Fl_Menu_Item *menu() const {return menu_;}
void menu(const Fl_Menu_Item *m);
void copy(const Fl_Menu_Item *m, void* user_data = 0);
int insert(int index, const char*, int shortcut, Fl_Callback*, void* = 0, int = 0);
int add(const char*, int shortcut, Fl_Callback*, void* = 0, int = 0); // see src/Fl_Menu_add.cxx
/** See int Fl_Menu_::add(const char* label, int shortcut, Fl_Callback*, void *user_data=0, int flags=0) */
int add(const char* a, const char* b, Fl_Callback* c, void* d = 0, int e = 0) {
return add(a,fl_old_shortcut(b),c,d,e);
}
/** See int Fl_Menu_::insert(const char* label, int shortcut, Fl_Callback*, void *user_data=0, int flags=0) */
int insert(int index, const char* a, const char* b, Fl_Callback* c, void* d = 0, int e = 0) {
return insert(index,a,fl_old_shortcut(b),c,d,e);
}
int add(const char *);
int size() const ;
void size(int W, int H) { Fl_Widget::size(W, H); }
void clear();
int clear_submenu(int index);
void replace(int,const char *);
void remove(int);
/** Changes the shortcut of item \p i to \p s. */
void shortcut(int i, int s) {menu_[i].shortcut(s);}
/** Sets the flags of item i. For a list of the flags, see Fl_Menu_Item. */
void mode(int i,int fl) {menu_[i].flags = fl;}
/** Gets the flags of item i. For a list of the flags, see Fl_Menu_Item. */
int mode(int i) const {return menu_[i].flags;}
/** Returns a pointer to the last menu item that was picked. */
const Fl_Menu_Item *mvalue() const {return value_;}
/** Returns the index into menu() of the last item chosen by the user. It is zero initially. */
int value() const {return value_ ? (int)(value_-menu_) : -1;}
int value(const Fl_Menu_Item*);
/**
The value is the index into menu() of the last item chosen by
the user. It is zero initially. You can set it as an integer, or set
it with a pointer to a menu item. The set routines return non-zero if
the new value is different than the old one.
*/
int value(int i) {return value(menu_+i);}
/** Returns the title of the last item chosen. */
const char *text() const {return value_ ? value_->text : 0;}
/** Returns the title of item i. */
const char *text(int i) const {return menu_[i].text;}
/** Gets the current font of menu item labels. */
Fl_Font textfont() const {return textfont_;}
/** Sets the current font of menu item labels. */
void textfont(Fl_Font c) {textfont_=c;}
/** Gets the font size of menu item labels. */
Fl_Fontsize textsize() const {return textsize_;}
/** Sets the font size of menu item labels. */
void textsize(Fl_Fontsize c) {textsize_=c;}
/** Get the current color of menu item labels. */
Fl_Color textcolor() const {return textcolor_;}
/** Sets the current color of menu item labels. */
void textcolor(Fl_Color c) {textcolor_=c;}
/**
This box type is used to surround the currently-selected items in the
menus. If this is FL_NO_BOX then it acts like
FL_THIN_UP_BOX and selection_color() acts like
FL_WHITE, for back compatibility.
*/
Fl_Boxtype down_box() const {return (Fl_Boxtype)down_box_;}
/** See Fl_Boxtype Fl_Menu_::down_box() const */
void down_box(Fl_Boxtype b) {down_box_ = b;}
/** For back compatibility, same as selection_color() */
Fl_Color down_color() const {return selection_color();}
/** For back compatibility, same as selection_color() */
void down_color(unsigned c) {selection_color(c);}
void setonly(Fl_Menu_Item* item);
};
#endif
//
// End of "$Id$".
//