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                 Time::TimeDelta time_since_animate;
  28
  29                 Child(Container &, Widget *);
  30                 virtual ~Child();
  31
  32                 void visibility_changed(bool);
  33                 void request_focus();
  34                 void grab_pointer();
  35                 void ungrab_pointer();
  36                 void request_animation(const Time::TimeDelta &);
  37         };
  38
  39         std::list<Child *> children;
  40         Widget *click_focus;
  41         unsigned click_button;
  42         Widget *pointer_focus;
  43         bool pointer_grabbed;
  44         Widget *input_focus;
  45         Widget *touch_focus;
  46
  47         Container();
  48 public:
  49         virtual ~Container();
  50
  51         void add(Widget &);
  52         void remove(Widget &);
  53 protected:
  54         virtual Child *create_child(Widget *);
  55         Geometry determine_child_geometry(const Widget &, const Part &) const;
  56         void autosize_child(const Widget &, const Part &, Geometry &) const;
  57         void reposition_child(Widget &, const Part &) const;
  58 public:
  59         std::list<Widget *> get_children() const;
  60         Widget *get_child_at(int, int) const;
  61         Widget *get_descendant_at(int, int) const;
  62         void raise(Widget &);
  63
  64 protected:
  65         void set_pointer_focus(Widget *);
  66         void set_input_focus(Widget *);
  67 public:
  68         Widget *get_input_focus() const { return input_focus; }
  69         Widget *get_final_input_focus() const;
  70
  71 private:
  72         void check_animation_interval();
  73
  74 public:
  75         virtual void button_press(int, int, unsigned);
  76         virtual void button_release(int, int, unsigned);
  77         virtual void pointer_motion(int, int);
  78 private:
  79         Widget *get_pointer_target(int, int, bool) const;
  80 public:
  81         virtual void pointer_leave();
  82         virtual void touch_press(int, int, unsigned);
  83         virtual void touch_release(int, int, unsigned);
  84         virtual void touch_motion(int, int, unsigned);
  85         virtual bool key_press(unsigned, unsigned);
  86         virtual bool key_release(unsigned, unsigned);
  87         virtual bool character(wchar_t);
  88         virtual void focus_out();
  89         virtual bool navigate(Navigation);
  90         virtual void animate(const Time::TimeDelta &);
  91 protected:
  92         virtual void on_reparent();
  93         virtual void on_child_added(Widget &) { }
  94         virtual void on_child_removed(Widget &) { }
  95         virtual void on_input_focus_changed(Widget *);
  96 };
  97
  98 } // namespace GLtk
  99 } // namespace Msp
 100
 101 #endif