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// Fl_Menu_.C
// This is a base class for all items that have a menu:
// Fl_Menu_Bar, Fl_Menu_Button, Fl_Choice
// This provides storage for a menu item, functions to add/modify/delete
// items, and a call for when the user picks a menu item.
// More code in Fl_Menu_add.C
#include <FL/Fl.H>
#include <FL/Fl_Menu_.H>
#include <stdlib.h>
Fl_Font Fl_Menu_::default_font_;
int Fl_Menu_::default_size_;
int Fl_Menu_::value(const Fl_Menu_Item* m) {
clear_changed();
if (value_ != m) {value_ = m; return 1;}
return 0;
}
// When user picks a menu item, call this. It will do the callback.
// Unfortunatly this also casts away const for the checkboxes, but this
// was necessary so non-checkbox menus can really be declared const...
const Fl_Menu_Item* Fl_Menu_::picked(const Fl_Menu_Item* v) {
if (v) {
if (v->radio()) {
if (!v->value()) { // they are turning on a radio item
set_changed();
((Fl_Menu_Item*)v)->setonly();
}
} else if (v->flags & FL_MENU_TOGGLE) {
set_changed();
((Fl_Menu_Item*)v)->flags ^= FL_MENU_VALUE;
} else if (v != value_) { // normal item
set_changed();
}
value_ = v;
if (when()&(FL_WHEN_CHANGED|FL_WHEN_RELEASE)) {
if (changed() || when()&FL_WHEN_NOT_CHANGED) {
clear_changed();
if (value_ && value_->callback_) value_->do_callback((Fl_Widget*)this);
else do_callback();
}
}
}
return v;
}
// turn on one of a set of radio buttons
void Fl_Menu_Item::setonly() {
flags |= FL_MENU_RADIO | FL_MENU_VALUE;
Fl_Menu_Item* j;
for (j = this; ; ) { // go down
if (j->flags & FL_MENU_DIVIDER) break; // stop on divider lines
j++;
if (!j->text || !j->radio()) break; // stop after group
j->clear();
}
for (j = this-1; ; j--) { // go up
if (!j->text || (j->flags&FL_MENU_DIVIDER) || !j->radio()) break;
j->clear();
}
}
Fl_Menu_::Fl_Menu_(int X,int Y,int W,int H,const char* l)
: Fl_Widget(X,Y,W,H,l) {
set_flag(SHORTCUT_LABEL);
box(FL_UP_BOX);
when(FL_WHEN_RELEASE_ALWAYS);
value_ = menu_ = 0;
alloc = 0;
selection_color(FL_SELECTION_COLOR);
textfont(FL_HELVETICA);
textsize(FL_NORMAL_SIZE);
textcolor(FL_BLACK);
down_box(FL_NO_BOX);
}
int Fl_Menu_::size() const {
if (!menu_) return 0;
return menu_->size();
}
void Fl_Menu_::menu(const Fl_Menu_Item* m) {
// if (alloc) clear();
alloc = 0;
value_ = menu_ = (Fl_Menu_Item*)m;
}
Fl_Menu_::~Fl_Menu_() {
// if (alloc) clear();
}
// end of Fl_Menu_.C
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