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Fl_Input_Choice.H

    00001 //
    00002 // "$Id: Fl_Input_Choice.H 9740 2012-12-09 17:45:24Z manolo $"
    00003 //
    00004 // An input/chooser widget.
    00005 //            ______________  ____
    00006 //           |              || __ |
    00007 //           | input area   || \/ |
    00008 //           |______________||____|
    00009 //
    00010 // Copyright 1998-2010 by Bill Spitzak and others.
    00011 // Copyright 2004 by Greg Ercolano.
    00012 //
    00013 // This library is free software. Distribution and use rights are outlined in
    00014 // the file "COPYING" which should have been included with this file.  If this
    00015 // file is missing or damaged, see the license at:
    00016 //
    00017 //     http://www.fltk.org/COPYING.php
    00018 //
    00019 // Please report all bugs and problems on the following page:
    00020 //
    00021 //     http://www.fltk.org/str.php
    00022 //
    00023
    00024 /* \file
    00025    Fl_Input_Choice widget . */
    00026
    00027 #ifndef Fl_Input_Choice_H
    00028 #define Fl_Input_Choice_H
    00029
    00030 #include <FL/Fl.H>
    00031 #include <FL/Fl_Group.H>
    00032 #include <FL/Fl_Input.H>
    00033 #include <FL/Fl_Menu_Button.H>
    00034 #include <FL/fl_draw.H>
    00035 #include <string.h>
    00036
    00051 class FL_EXPORT Fl_Input_Choice : public Fl_Group {
    00052   // Private class to handle slightly 'special' behavior of menu button
    00053   class InputMenuButton : public Fl_Menu_Button {
    00054     void draw() {
    00055       draw_box(FL_UP_BOX, color());
    00056       fl_color(active_r() ? labelcolor() : fl_inactive(labelcolor()));
    00057       int xc = x()+w()/2, yc=y()+h()/2;
    00058       fl_polygon(xc-5,yc-3,xc+5,yc-3,xc,yc+3);
    00059       if (Fl::focus() == this) draw_focus();
    00060     }
    00061   public:
    00062     InputMenuButton(int X,int Y,int W,int H,const char*L=0) :
    00063         Fl_Menu_Button(X, Y, W, H, L) { box(FL_UP_BOX); }
    00064   };
    00065
    00066   Fl_Input *inp_;
    00067   InputMenuButton *menu_;
    00068
    00069   static void menu_cb(Fl_Widget*, void *data) {
    00070     Fl_Input_Choice *o=(Fl_Input_Choice *)data;
    00071     Fl_Widget_Tracker wp(o);
    00072     const Fl_Menu_Item *item = o->menubutton()->mvalue();
    00073     if (item && item->flags & (FL_SUBMENU|FL_SUBMENU_POINTER)) return;  // ignore submenus
    00074     if (!strcmp(o->inp_->value(), o->menu_->text()))
    00075     {
    00076       o->Fl_Widget::clear_changed();
    00077       if (o->when() & FL_WHEN_NOT_CHANGED)
    00078         o->do_callback();
    00079     }
    00080     else
    00081     {
    00082       o->inp_->value(o->menu_->text());
    00083       o->inp_->set_changed();
    00084       o->Fl_Widget::set_changed();
    00085       if (o->when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE))
    00086         o->do_callback();
    00087     }
    00088
    00089     if (wp.deleted()) return;
    00090
    00091     if (o->callback() != default_callback)
    00092     {
    00093       o->Fl_Widget::clear_changed();
    00094       o->inp_->clear_changed();
    00095     }
    00096   }
    00097
    00098   static void inp_cb(Fl_Widget*, void *data) {
    00099     Fl_Input_Choice *o=(Fl_Input_Choice *)data;
    00100     Fl_Widget_Tracker wp(o);
    00101     if (o->inp_->changed()) {
    00102       o->Fl_Widget::set_changed();
    00103       if (o->when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE))
    00104         o->do_callback();
    00105     } else {
    00106       o->Fl_Widget::clear_changed();
    00107       if (o->when() & FL_WHEN_NOT_CHANGED)
    00108         o->do_callback();
    00109     }
    00110
    00111     if (wp.deleted()) return;
    00112
    00113     if (o->callback() != default_callback)
    00114       o->Fl_Widget::clear_changed();
    00115   }
    00116
    00117   // Custom resize behavior -- input stretches, menu button doesn't
    00118   inline int inp_x() { return(x() + Fl::box_dx(box())); }
    00119   inline int inp_y() { return(y() + Fl::box_dy(box())); }
    00120   inline int inp_w() { return(w() - Fl::box_dw(box()) - 20); }
    00121   inline int inp_h() { return(h() - Fl::box_dh(box())); }
    00122
    00123   inline int menu_x() { return(x() + w() - 20 - Fl::box_dx(box())); }
    00124   inline int menu_y() { return(y() + Fl::box_dy(box())); }
    00125   inline int menu_w() { return(20); }
    00126   inline int menu_h() { return(h() - Fl::box_dh(box())); }
    00127
    00128 public:
    00134   Fl_Input_Choice(int X,int Y,int W,int H,const char*L=0);
    00135
    00147   void add(const char *s) { menu_->add(s);  }
    00149   int changed() const { return inp_->changed() | Fl_Widget::changed(); }
    00151   void clear_changed() {
    00152     inp_->clear_changed();
    00153     Fl_Widget::clear_changed();
    00154   }
    00157   void set_changed() {
    00158     inp_->set_changed();
    00159     // no need to call Fl_Widget::set_changed()
    00160   }
    00162   void clear() { menu_->clear(); }
    00164   Fl_Boxtype down_box() const { return (menu_->down_box()); }
    00166   void down_box(Fl_Boxtype b) { menu_->down_box(b); }
    00168   const Fl_Menu_Item *menu() { return (menu_->menu()); }
    00170   void menu(const Fl_Menu_Item *m) { menu_->menu(m); }
    00171   void resize(int X, int Y, int W, int H) {
    00172     Fl_Group::resize(X,Y,W,H);
    00173     inp_->resize(inp_x(), inp_y(), inp_w(), inp_h());
    00174     menu_->resize(menu_x(), menu_y(), menu_w(), menu_h());
    00175   }
    00177   Fl_Color textcolor() const { return (inp_->textcolor());}
    00179   void textcolor(Fl_Color c) { inp_->textcolor(c);}
    00181   Fl_Font textfont() const { return (inp_->textfont());}
    00183   void textfont(Fl_Font f) { inp_->textfont(f);}
    00185   Fl_Fontsize textsize() const { return (inp_->textsize()); }
    00187   void textsize(Fl_Fontsize s) { inp_->textsize(s); }
    00189   const char* value() const { return (inp_->value()); }
    00192   void value(const char *val) { inp_->value(val); }
    00195   void value(int val) {
    00196     menu_->value(val);
    00197     inp_->value(menu_->text(val));
    00198   }
    00211   Fl_Menu_Button *menubutton() { return menu_; }
    00215   Fl_Input *input() { return inp_; }
    00216 };
    00217
    00218 #endif // !Fl_Input_Choice_H
    00219
    00220 //
    00221 // End of "$Id: Fl_Input_Choice.H 9740 2012-12-09 17:45:24Z manolo $".
    00222 //