Rename some get functions as find because they can return null

[libs/gltk.git] / source / container.h

diff --git a/source/container.h b/source/container.h
index bca1c59cff79815872c9dd8dca20bcfd0a70ae23..b2f69d3bb2eae41cf35183d04f8cc5f1b47531ef 100644 (file)
--- a/source/container.h
+++ b/source/container.h
@@ -4,26 +4,27 @@
 #include <list>
 #include <stdexcept>
 #include <sigc++/trackable.h>
+#include "mspgltk_api.h"
 #include "widget.h"
 
 namespace Msp {
 namespace GLtk {
 
-class hierarchy_error: public std::logic_error
+class MSPGLTK_API hierarchy_error: public std::logic_error
 {
 public:
        hierarchy_error(const std::string &);
-       virtual ~hierarchy_error() throw() { }
 };
 
 
-class Container: virtual public Widget
+class MSPGLTK_API Container: virtual public Widget
 {
 protected:
        struct Child: public sigc::trackable
        {
                Container &container;
-               Widget *widget;
+               Widget *widget = nullptr;
+               Time::TimeDelta time_since_animate;
 
                Child(Container &, Widget *);
                virtual ~Child();
@@ -32,16 +33,21 @@ protected:
                void request_focus();
                void grab_pointer();
                void ungrab_pointer();
+               void request_animation(const Time::TimeDelta &);
+               void rebuild_needed();
        };
 
        std::list<Child *> children;
-       Widget *click_focus;
-       unsigned click_button;
-       Widget *pointer_focus;
-       bool pointer_grabbed;
-       Widget *input_focus;
+       Widget *click_focus = nullptr;
+       unsigned click_button = 0;
+       Widget *pointer_focus = nullptr;
+       bool pointer_grabbed = false;
+       Widget *input_focus = nullptr;
+       Widget *saved_input_focus = nullptr;
+       Widget *touch_focus = nullptr;
+       bool children_rebuild_needed = false;
 
-       Container();
+       Container() = default;
 public:
        virtual ~Container();
 
@@ -49,31 +55,51 @@ public:
        void remove(Widget &);
 protected:
        virtual Child *create_child(Widget *);
+       Geometry determine_child_geometry(const Widget &, const Part &) const;
+       void autosize_child(const Widget &, const Part &, Geometry &) const;
+       void reposition_child(Widget &, const Part &) const;
 public:
        std::list<Widget *> get_children() const;
-       Widget *get_child_at(int, int);
-       Widget *get_descendant_at(int, int);
+       Widget *find_child_at(int, int) const;
+       Widget *find_descendant_at(int, int) const;
        void raise(Widget &);
 
 protected:
-       void set_pointer_focus(Widget *);
+       void set_pointer_focus(Widget *, bool = false);
        void set_input_focus(Widget *);
 public:
        Widget *get_input_focus() const { return input_focus; }
        Widget *get_final_input_focus() const;
 
-       virtual void button_press(int, int, unsigned);
-       virtual void button_release(int, int, unsigned);
-       virtual void pointer_motion(int, int);
-       virtual void pointer_leave();
-       virtual void key_press(unsigned, unsigned);
-       virtual void key_release(unsigned, unsigned);
-       virtual void character(wchar_t);
-       virtual void focus_out();
+private:
+       void check_animation_interval();
+
+protected:
+       void rebuild_hierarchy() override;
+
+public:
+       void button_press(int, int, unsigned) override;
+       void button_release(int, int, unsigned) override;
+       void pointer_motion(int, int) override;
+private:
+       Widget *get_pointer_target(int, int, bool) const;
+public:
+       void pointer_leave() override;
+       void touch_press(int, int, unsigned) override;
+       void touch_release(int, int, unsigned) override;
+       void touch_motion(int, int, unsigned) override;
+       bool key_press(unsigned, unsigned) override;
+       bool key_release(unsigned, unsigned) override;
+       bool character(wchar_t) override;
+       void focus_in() override;
+       void focus_out() override;
+       bool navigate(Navigation) override;
+       void animate(const Time::TimeDelta &) override;
 protected:
-       virtual void on_reparent();
+       void on_reparent() override;
        virtual void on_child_added(Widget &) { }
        virtual void on_child_removed(Widget &) { }
+       virtual void on_input_focus_changed(Widget *);
 };
 
 } // namespace GLtk