source/container.h

   1 #ifndef MSP_GLTK_CONTAINER_H_
   2 #define MSP_GLTK_CONTAINER_H_
   3
   4 #include <list>
   5 #include <stdexcept>
   6 #include <sigc++/trackable.h>
   7 #include "widget.h"
   8
   9 namespace Msp {
  10 namespace GLtk {
  11
  12 class hierarchy_error: public std::logic_error
  13 {
  14 public:
  15         hierarchy_error(const std::string &);
  16         virtual ~hierarchy_error() throw() { }
  17 };
  18
  19
  20 class Container: virtual public Widget
  21 {
  22 protected:
  23         struct Child: public sigc::trackable
  24         {
  25                 Container &container;
  26                 Widget *widget;
  27
  28                 Child(Container &, Widget *);
  29                 virtual ~Child();
  30
  31                 void visibility_changed(bool);
  32                 void request_focus();
  33                 void grab_pointer();
  34                 void ungrab_pointer();
  35         };
  36
  37         std::list<Child *> children;
  38         Widget *click_focus;
  39         unsigned click_button;
  40         Widget *pointer_focus;
  41         bool pointer_grabbed;
  42         Widget *input_focus;
  43
  44         Container();
  45 public:
  46         virtual ~Container();
  47
  48         void add(Widget &);
  49         void remove(Widget &);
  50 protected:
  51         virtual Child *create_child(Widget *);
  52         Geometry determine_child_geometry(const Widget &, const Part &) const;
  53         void autosize_child(const Widget &, const Part &, Geometry &) const;
  54         void reposition_child(Widget &, const Part &) const;
  55 public:
  56         std::list<Widget *> get_children() const;
  57         Widget *get_child_at(int, int);
  58         Widget *get_descendant_at(int, int);
  59         void raise(Widget &);
  60
  61 protected:
  62         void set_pointer_focus(Widget *);
  63         void set_input_focus(Widget *);
  64 public:
  65         Widget *get_input_focus() const { return input_focus; }
  66         Widget *get_final_input_focus() const;
  67
  68         virtual void button_press(int, int, unsigned);
  69         virtual void button_release(int, int, unsigned);
  70         virtual void pointer_motion(int, int);
  71 private:
  72         Widget *get_pointer_target(int, int);
  73 public:
  74         virtual void pointer_leave();
  75         virtual void key_press(unsigned, unsigned);
  76         virtual void key_release(unsigned, unsigned);
  77         virtual void character(wchar_t);
  78         virtual void focus_out();
  79 protected:
  80         virtual void on_reparent();
  81         virtual void on_child_added(Widget &) { }
  82         virtual void on_child_removed(Widget &) { }
  83 };
  84
  85 } // namespace GLtk
  86 } // namespace Msp
  87
  88 #endif