src/gui/Menu.hh

   1 /*
   2  * Copyright (C) 2002,2003,2004,2005,2006 Daniel Heck
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  */
  19 #ifndef GUI_MENU_HH_INCLUDED
  20 #define GUI_MENU_HH_INCLUDED
  21
  22 #include "gui/widgets.hh"
  23 #include "gui/Menu.hh"
  24 #include "ecl_fwd.hh"
  25 #include "ecl_geom.hh"
  26 #include "SDL.h"
  27 #include <cmath>
  28 #include <vector>
  29
  30 namespace enigma { namespace gui {
  31 /* -------------------- Menu -------------------- */
  32
  33     class Menu : public Container {
  34     public:
  35         Menu();
  36
  37         //! true: ok, false: menu aborted by user
  38         virtual bool manage();
  39
  40         void add(Widget *w);
  41         void add(Widget *w, ecl::Rect r);
  42         void center();
  43
  44         void draw (ecl::GC &gc, const ecl::Rect &r);
  45
  46         virtual void quit();
  47         void abort();
  48
  49         // Container interface
  50         virtual void set_key_focus(Widget *newfocus);
  51         virtual bool is_key_focus(Widget *focus);
  52
  53     protected:
  54         void reset_active_widget() { active_widget = NULL; }
  55         void reset_key_focus_widget() { key_focus_widget = NULL; }
  56
  57         // Menu interface.
  58         virtual void draw_background(ecl::GC &/*gc*/) {}
  59
  60     private:
  61         void handle_event(const SDL_Event &e);
  62
  63         void switch_active_widget(Widget *to_activate);
  64         void track_active_widget( int x, int y ); // used by mouse
  65         void goto_adjacent_widget(int xdir, int ydir); // used by keyboard
  66
  67         // Variables.
  68         Widget *active_widget;
  69         Widget *key_focus_widget;
  70         bool quitp, abortp;
  71     };
  72
  73     class BuildVList {
  74         ecl::Rect r;
  75         Menu *container;
  76         int skip;
  77     public:
  78         BuildVList(Menu *cc, const ecl::Rect &rr, int s)
  79         : r(rr), container(cc), skip(s)
  80         {}
  81
  82         Widget *add(Widget *w) {
  83             container->add(w, r);
  84             r.y += r.h+skip;
  85             return w;
  86         }
  87
  88         ecl::Rect pos() const { return r; }
  89     };
  90
  91     class BuildHList {
  92         ecl::Rect r;
  93         Menu *container;
  94         int skip;
  95     public:
  96         BuildHList(Menu *cc, const ecl::Rect &rr, int s)
  97         : r(rr), container(cc), skip(s)
  98         {}
  99
 100         Widget * add(Widget *w) {
 101             container->add(w, r);
 102             r.x += r.w+skip;
 103             return w;
 104         }
 105         Widget *add (Widget *w, int width) {
 106             ecl::Rect rr(r.x, r.y, width, r.h);
 107             container->add(w, rr);
 108             r.x += width + skip;
 109             return w;
 110         }
 111
 112         ecl::Rect pos() const { return r; }
 113     };
 114
 115 }} // namespace enigma::gui
 116 #endif