source/container.h

   1 #ifndef MSP_GLTK_CONTAINER_H_
   2 #define MSP_GLTK_CONTAINER_H_
   3
   4 #include <stdexcept>
   5 #include <vector>
   6 #include <sigc++/trackable.h>
   7 #include "mspgltk_api.h"
   8 #include "widget.h"
   9
  10 namespace Msp {
  11 namespace GLtk {
  12
  13 class MSPGLTK_API hierarchy_error: public std::logic_error
  14 {
  15 public:
  16         hierarchy_error(const std::string &);
  17 };
  18
  19
  20 class MSPGLTK_API Container: virtual public Widget
  21 {
  22 protected:
  23         struct Child: public sigc::trackable
  24         {
  25                 Container &container;
  26                 Widget *widget = nullptr;
  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                 void rebuild_needed();
  38         };
  39
  40         std::vector<Child *> children;
  41         Widget *click_focus = nullptr;
  42         unsigned click_button = 0;
  43         Widget *pointer_focus = nullptr;
  44         bool pointer_grabbed = false;
  45         Widget *input_focus = nullptr;
  46         Widget *saved_input_focus = nullptr;
  47         Widget *touch_focus = nullptr;
  48         bool children_rebuild_needed = false;
  49
  50         Container() = default;
  51 public:
  52         virtual ~Container();
  53
  54         void add(Widget &);
  55         void remove(Widget &);
  56 protected:
  57         Geometry determine_child_geometry(const Widget &, const Part &) const;
  58         void autosize_child(const Widget &, const Part &, Geometry &) const;
  59         void reposition_child(Widget &, const Part &) const;
  60 public:
  61         std::vector<Widget *> get_children() const;
  62         Widget *find_child_at(int, int) const;
  63         Widget *find_descendant_at(int, int) const;
  64         void raise(Widget &);
  65
  66 protected:
  67         void set_pointer_focus(Widget *, bool = false);
  68         void set_input_focus(Widget *);
  69 public:
  70         Widget *get_input_focus() const { return input_focus; }
  71         Widget *get_final_input_focus() const;
  72
  73 private:
  74         void check_animation_interval();
  75
  76 protected:
  77         void rebuild_hierarchy() override;
  78
  79 public:
  80         void button_press(int, int, unsigned) override;
  81         void button_release(int, int, unsigned) override;
  82         void pointer_motion(int, int) override;
  83 private:
  84         Widget *get_pointer_target(int, int, bool) const;
  85 public:
  86         void pointer_leave() override;
  87         void touch_press(int, int, unsigned) override;
  88         void touch_release(int, int, unsigned) override;
  89         void touch_motion(int, int, unsigned) override;
  90         bool key_press(unsigned, unsigned) override;
  91         bool key_release(unsigned, unsigned) override;
  92         bool character(wchar_t) override;
  93         void focus_in() override;
  94         void focus_out() override;
  95         bool navigate(Navigation) override;
  96         void animate(const Time::TimeDelta &) override;
  97 protected:
  98         void on_reparent() override;
  99         virtual void on_child_added(Widget &) { }
 100         virtual void on_child_removed(Widget &) { }
 101         virtual void on_input_focus_changed(Widget *);
 102 };
 103
 104 } // namespace GLtk
 105 } // namespace Msp
 106
 107 #endif