//// "$Id: Fl_Menu_.cxx,v 1.1.1.1 2003/08/07 21:18:40 jasonk Exp $"//// Common menu code for the Fast Light Tool Kit (FLTK).//// Copyright 1998-1999 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems to "fltk-bugs@easysw.com".//// 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 <string.h>#include <stdio.h>#include <stdlib.h>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();      }      redraw();    } else if (v->flags & FL_MENU_TOGGLE) {      set_changed();      ((Fl_Menu_Item*)v)->flags ^= FL_MENU_VALUE;      redraw();    } 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 buttonsvoid 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) {  clear();  value_ = menu_ = (Fl_Menu_Item*)m;}#if 1// this version is ok with new Fl_Menu_add code with fl_menu_array_owner:void Fl_Menu_::copy(const Fl_Menu_Item* m, void* user_data) {  int n = m->size();  Fl_Menu_Item* newMenu = new Fl_Menu_Item[n];  memcpy(newMenu, m, n*sizeof(Fl_Menu_Item));  menu(newMenu);  alloc = 1; // make destructor free array, but not strings  // for convienence, provide way to change all the user data pointers:  if (user_data) for (; n--;) {    if (newMenu->callback_) newMenu->user_data_ = user_data;    newMenu++;  }}#else// This is Guillaume Nodet's fixed version for the older Fl_Menu_add// that enlarged the array at powers of 2:void Fl_Menu_::copy(const Fl_Menu_Item* m, void* user_data) {  int i, s = m->size(), n=s;  for (i=0; n; n>>=1, i++);  n = 1 << i;  Fl_Menu_Item* newMenu = new Fl_Menu_Item[n];  memcpy(newMenu, m, s*sizeof(Fl_Menu_Item));  memset(newMenu+s, 0, (n-s)*sizeof(Fl_Menu_Item));  menu(newMenu);  alloc = 1; // make destructor free it  // for convienence, provide way to change all the user data pointers:  if (user_data) for (; s--;) {    if (newMenu->callback_) newMenu->user_data_ = user_data;    newMenu++;  }}#endifFl_Menu_::~Fl_Menu_() {  clear();}// Fl_Menu::add() uses this to indicate the owner of the dynamically-// expanding array.  We must not free this array:Fl_Menu_* fl_menu_array_owner = 0;void Fl_Menu_::clear() {  if (alloc) {    if (alloc>1) for (int i = size(); i--;)      if (menu_[i].text) free((void*)menu_[i].text);    if (this == fl_menu_array_owner)      fl_menu_array_owner = 0;    else      delete[] menu_;    menu_ = 0;    value_ = 0;    alloc = 0;  }}//// End of "$Id: Fl_Menu_.cxx,v 1.1.1.1 2003/08/07 21:18:40 jasonk Exp $".//