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