FLTK 1.3.5
Fl_Input_Choice.H
1 //
2 // "$Id$"
3 //
4 // An input/chooser widget.
5 // ______________ ____
6 // | || __ |
7 // | input area || \/ |
8 // |______________||____|
9 //
10 // Copyright 1998-2010 by Bill Spitzak and others.
11 // Copyright 2004 by Greg Ercolano.
12 //
13 // This library is free software. Distribution and use rights are outlined in
14 // the file "COPYING" which should have been included with this file. If this
15 // file is missing or damaged, see the license at:
16 //
17 // http://www.fltk.org/COPYING.php
18 //
19 // Please report all bugs and problems on the following page:
20 //
21 // http://www.fltk.org/str.php
22 //
23 
24 /* \file
25  Fl_Input_Choice widget . */
26 
27 #ifndef Fl_Input_Choice_H
28 #define Fl_Input_Choice_H
29 
30 #include <FL/Fl.H>
31 #include <FL/Fl_Group.H>
32 #include <FL/Fl_Input.H>
33 #include <FL/Fl_Menu_Button.H>
34 #include <FL/fl_draw.H>
35 #include <string.h>
36 
95 class FL_EXPORT Fl_Input_Choice : public Fl_Group {
96  // Private class to handle slightly 'special' behavior of menu button
97  class InputMenuButton : public Fl_Menu_Button {
98  void draw() {
99  draw_box(FL_UP_BOX, color());
100  fl_color(active_r() ? labelcolor() : fl_inactive(labelcolor()));
101  int xc = x()+w()/2, yc=y()+h()/2;
102  fl_polygon(xc-5,yc-3,xc+5,yc-3,xc,yc+3);
103  if (Fl::focus() == this) draw_focus();
104  }
105  public:
106  InputMenuButton(int X,int Y,int W,int H,const char*L=0) :
107  Fl_Menu_Button(X, Y, W, H, L) { box(FL_UP_BOX); }
108  };
109 
110  Fl_Input *inp_;
111  InputMenuButton *menu_;
112 
113  // note: this is used by the Fl_Input_Choice ctor defined in Fl_Group.
114  static void menu_cb(Fl_Widget*, void *data) {
115  Fl_Input_Choice *o=(Fl_Input_Choice *)data;
116  Fl_Widget_Tracker wp(o);
117  const Fl_Menu_Item *item = o->menubutton()->mvalue();
118  if (item && item->flags & (FL_SUBMENU|FL_SUBMENU_POINTER)) return; // ignore submenus
119  if (!strcmp(o->inp_->value(), o->menu_->text()))
120  {
121  o->Fl_Widget::clear_changed();
122  if (o->when() & FL_WHEN_NOT_CHANGED)
123  o->do_callback();
124  }
125  else
126  {
127  o->inp_->value(o->menu_->text());
128  o->inp_->set_changed();
129  o->Fl_Widget::set_changed();
130  if (o->when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE))
131  o->do_callback();
132  }
133 
134  if (wp.deleted()) return;
135 
136  if (o->callback() != default_callback)
137  {
138  o->Fl_Widget::clear_changed();
139  o->inp_->clear_changed();
140  }
141  }
142 
143  // note: this is used by the Fl_Input_Choice ctor defined in Fl_Group.
144  static void inp_cb(Fl_Widget*, void *data) {
145  Fl_Input_Choice *o=(Fl_Input_Choice *)data;
146  Fl_Widget_Tracker wp(o);
147  if (o->inp_->changed()) {
148  o->Fl_Widget::set_changed();
149  if (o->when() & (FL_WHEN_CHANGED|FL_WHEN_RELEASE))
150  o->do_callback();
151  } else {
152  o->Fl_Widget::clear_changed();
153  if (o->when() & FL_WHEN_NOT_CHANGED)
154  o->do_callback();
155  }
156 
157  if (wp.deleted()) return;
158 
159  if (o->callback() != default_callback)
160  o->Fl_Widget::clear_changed();
161  }
162 
163  // Custom resize behavior -- input stretches, menu button doesn't
164  inline int inp_x() { return(x() + Fl::box_dx(box())); }
165  inline int inp_y() { return(y() + Fl::box_dy(box())); }
166  inline int inp_w() { return(w() - Fl::box_dw(box()) - 20); }
167  inline int inp_h() { return(h() - Fl::box_dh(box())); }
168 
169  inline int menu_x() { return(x() + w() - 20 - Fl::box_dx(box())); }
170  inline int menu_y() { return(y() + Fl::box_dy(box())); }
171  inline int menu_w() { return(20); }
172  inline int menu_h() { return(h() - Fl::box_dh(box())); }
173 
174 public:
180  Fl_Input_Choice(int X,int Y,int W,int H,const char*L=0);
181 
193  void add(const char *s) { menu_->add(s); }
195  int changed() const { return inp_->changed() | Fl_Widget::changed(); }
197  void clear_changed() {
198  inp_->clear_changed();
200  }
203  void set_changed() {
204  inp_->set_changed();
205  // no need to call Fl_Widget::set_changed()
206  }
208  void clear() { menu_->clear(); }
210  Fl_Boxtype down_box() const { return (menu_->down_box()); }
212  void down_box(Fl_Boxtype b) { menu_->down_box(b); }
214  const Fl_Menu_Item *menu() { return (menu_->menu()); }
216  void menu(const Fl_Menu_Item *m) { menu_->menu(m); }
217  void resize(int X, int Y, int W, int H) {
218  Fl_Group::resize(X,Y,W,H);
219  inp_->resize(inp_x(), inp_y(), inp_w(), inp_h());
220  menu_->resize(menu_x(), menu_y(), menu_w(), menu_h());
221  }
223  Fl_Color textcolor() const { return (inp_->textcolor());}
225  void textcolor(Fl_Color c) { inp_->textcolor(c);}
227  Fl_Font textfont() const { return (inp_->textfont());}
229  void textfont(Fl_Font f) { inp_->textfont(f);}
231  Fl_Fontsize textsize() const { return (inp_->textsize()); }
233  void textsize(Fl_Fontsize s) { inp_->textsize(s); }
235  const char* value() const { return (inp_->value()); }
238  void value(const char *val) { inp_->value(val); }
241  void value(int val) {
242  menu_->value(val);
243  inp_->value(menu_->text(val));
244  }
257  Fl_Menu_Button *menubutton() { return menu_; }
261  Fl_Input *input() { return inp_; }
262 };
263 
264 #endif // !Fl_Input_Choice_H
265 
266 //
267 // End of "$Id$".
268 //