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 *saved_input_focus;
  46         Widget *touch_focus;
  47
  48         Container();
  49 public:
  50         virtual ~Container();
  51
  52         void add(Widget &);
  53         void remove(Widget &);
  54 protected:
  55         virtual Child *create_child(Widget *);
  56         Geometry determine_child_geometry(const Widget &, const Part &) const;
  57         void autosize_child(const Widget &, const Part &, Geometry &) const;
  58         void reposition_child(Widget &, const Part &) const;
  59 public:
  60         std::list<Widget *> get_children() const;
  61         Widget *get_child_at(int, int) const;
  62         Widget *get_descendant_at(int, int) const;
  63         void raise(Widget &);
  64
  65 protected:
  66         void set_pointer_focus(Widget *, bool = false);
  67         void set_input_focus(Widget *);
  68 public:
  69         Widget *get_input_focus() const { return input_focus; }
  70         Widget *get_final_input_focus() const;
  71
  72 private:
  73         void check_animation_interval();
  74
  75 public:
  76         virtual void button_press(int, int, unsigned);
  77         virtual void button_release(int, int, unsigned);
  78         virtual void pointer_motion(int, int);
  79 private:
  80         Widget *get_pointer_target(int, int, bool) const;
  81 public:
  82         virtual void pointer_leave();
  83         virtual void touch_press(int, int, unsigned);
  84         virtual void touch_release(int, int, unsigned);
  85         virtual void touch_motion(int, int, unsigned);
  86         virtual bool key_press(unsigned, unsigned);
  87         virtual bool key_release(unsigned, unsigned);
  88         virtual bool character(wchar_t);
  89         virtual void focus_in();
  90         virtual void focus_out();
  91         virtual bool navigate(Navigation);
  92         virtual void animate(const Time::TimeDelta &);
  93 protected:
  94         virtual void on_reparent();
  95         virtual void on_child_added(Widget &) { }
  96         virtual void on_child_removed(Widget &) { }
  97         virtual void on_input_focus_changed(Widget *);
  98 };
  99
 100 } // namespace GLtk
 101 } // namespace Msp
 102
 103 #endif