Rework how widget ownership works in Container

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

diff --git a/source/widget.h b/source/widget.h
index 51728c35e0424bb63a5564e7108366ff55ee725c..001da84a891f2bb9743f3d3553cff6cee7ddbf03 100644 (file)
--- a/source/widget.h
+++ b/source/widget.h
@@ -2,8 +2,13 @@
 #define MSP_GLTK_WIDGET_H_
 
 #include <string>
+#include <msp/core/noncopyable.h>
 #include <msp/datafile/objectloader.h>
+#include <msp/gl/renderer.h>
 #include "geometry.h"
+#include "inputmethod.h"
+#include "mspgltk_api.h"
+#include "partcache.h"
 #include "state.h"
 
 namespace Msp {
@@ -15,10 +20,9 @@ class Resources;
 class Style;
 
 /**
-Base class for all widgets.  Derived classes should call update_style in 
-constructor, because it can't be done correctly in the Widget constructor.
+Base class for all widgets.
 */
-class Widget
+class MSPGLTK_API Widget: public NonCopyable
 {
        friend class Container;
 
@@ -27,6 +31,7 @@ public:
        {
        public:
                Loader(Widget &);
+
        private:
                void position(int, int);
                void size(unsigned, unsigned);
@@ -38,53 +43,68 @@ public:
        sigc::signal<void> signal_request_focus;
        sigc::signal<void> signal_grab_pointer;
        sigc::signal<void> signal_ungrab_pointer;
+       sigc::signal<void, const Time::TimeDelta &> signal_request_animation;
+       sigc::signal<void> signal_rebuild_needed;
 
 protected:
        Geometry geom;
        std::string style_name;
-       const Style *style;
-       State state;
-       bool visible;
-       bool focusable;
-       Container *parent;
+       const Style *style = nullptr;
+       State state = NORMAL;
+       bool visible = true;
+       InputType input_type = INPUT_NONE;
+       Container *parent = nullptr;
        std::string tooltip;
+       PartCache part_cache;
+       bool rebuild_needed = false;
+       Time::TimeDelta anim_interval;
 
-       Widget();
+       Widget() = default;
 public:
        virtual ~Widget();
 
-       /**
-       Returns the name of the widget class.  Used for style lookup.
-       */
+       /// Returns the name of the widget class.  Used for style lookup.
        virtual const char *get_class() const { return "widget"; }
 
        void set_position(int, int);
        void set_size(unsigned, unsigned);
-       virtual void autosize();
+       void autosize();
+       void autosize(Geometry &) const;
+protected:
+       virtual void autosize_special(const Part &, Geometry &) const { };
+public:
        void set_geometry(const Geometry &);
        const Geometry &get_geometry() const { return geom; }
 
+       void map_coords_to_ancestor(int &, int &, const Widget &) const;
+       void map_coords_to_root(int &, int &) const;
+
 protected:
-       /**
-       Sets the widget's parent Container.  The widget must be unparented when
-       calling this function with a non-null parameter.
-       */
+       /** Sets the widget's parent Container.  The widget must be unparented when
+       calling this function with a non-null parameter. */
        void set_parent(Container *);
 public:
        Container *get_parent() const { return parent; }
 
-       /**
-       Sets the widget style.  The final style name is constructed by concatenating
-       the widget class and the style name with a dash.
-       */
+       /** Finds the closest ancestor of a specific type. */
+       template<typename T>
+       T *find_ancestor() const
+       {
+               for(Widget *w=parent; w; w=w->get_parent())
+                       if(T *tw = dynamic_cast<T *>(w))
+                               return tw;
+               return 0;
+       }
+
+       /** Sets the widget style.  The name of the resource to be looked up is
+       constructed by concatenating the widget class and the style name with a
+       dash. */
        void set_style(const std::string &);
        const Style &get_style() const { return *style; }
 
 protected:
-       /**
-       Gets a style object from the resource collection based on the class and
-       style names of the widget.
-       */
+       /** Gets a style object from the resource collection based on the class and
+       style names of the widget. */
        void update_style();
 
 public:
@@ -93,13 +113,35 @@ public:
 
        void set_visible(bool);
        bool is_visible() const { return visible; }
-       void set_focusable(bool);
-       bool is_focusable() const { return focusable; }
+       InputType get_input_type() const { return input_type; }
+       bool is_focusable() const { return visible && input_type!=INPUT_NONE; }
        void set_focus();
+       void set_enabled(bool);
+       bool is_enabled() const { return !(state&DISABLED); }
+
+protected:
+       void set_state(State s) { set_state(s, s); }
+       void clear_state(State s) { set_state(s, NORMAL); }
+       void set_state(State, State);
+public:
+       State get_state() const { return state; }
+
+protected:
+       void set_animation_interval(const Time::TimeDelta &);
+       void stop_animation();
+public:
+       const Time::TimeDelta &get_animation_interval() const { return anim_interval; }
 
-       void render() const;
 protected:
-       virtual void render_special(const Part &) const { }
+       void mark_rebuild();
+       virtual void rebuild_hierarchy();
+       void rebuild();
+       virtual void rebuild_special(const Part &);
+
+public:
+       void render(GL::Renderer &) const;
+protected:
+       virtual void render_special(const Part &, GL::Renderer &) const { }
 
 public:
        // Events
@@ -108,12 +150,18 @@ public:
        virtual void pointer_motion(int, int) { }
        virtual void pointer_enter();
        virtual void pointer_leave();
-       virtual void key_press(unsigned, unsigned, wchar_t) { }
-       virtual void key_release(unsigned, unsigned) { }
+       virtual void touch_press(int, int, unsigned);
+       virtual void touch_release(int, int, unsigned);
+       virtual void touch_motion(int, int, unsigned);
+       virtual bool key_press(unsigned, unsigned) { return false; }
+       virtual bool key_release(unsigned, unsigned) { return false; }
+       virtual bool character(wchar_t) { return false; }
        virtual void focus_in();
        virtual void focus_out();
+       virtual bool navigate(Navigation) { return false; }
+       virtual void animate(const Time::TimeDelta &) { }
 protected:
-       virtual void on_geometry_change() { }
+       virtual void on_size_change() { }
        virtual void on_style_change() { }
        virtual void on_reparent() { }
 };