1 #ifndef MSP_GLTK_WIDGET_H_
2 #define MSP_GLTK_WIDGET_H_
5 #include <msp/core/noncopyable.h>
6 #include <msp/datafile/objectloader.h>
7 #include <msp/gl/renderer.h>
9 #include "inputmethod.h"
10 #include "mspgltk_api.h"
11 #include "partcache.h"
23 Base class for all widgets.
25 class MSPGLTK_API Widget: public NonCopyable
27 friend class Container;
30 class Loader: public DataFile::ObjectLoader<Widget>
36 void position(int, int);
37 void size(unsigned, unsigned);
38 void style(const std::string &);
41 sigc::signal<void, bool> signal_visibility_changed;
42 sigc::signal<void> signal_autosize_changed;
43 sigc::signal<void> signal_request_focus;
44 sigc::signal<void> signal_grab_pointer;
45 sigc::signal<void> signal_ungrab_pointer;
46 sigc::signal<void, const Time::TimeDelta &> signal_request_animation;
47 sigc::signal<void> signal_rebuild_needed;
51 std::string style_name;
52 const Style *style = nullptr;
55 InputType input_type = INPUT_NONE;
56 Container *parent = nullptr;
59 bool rebuild_needed = false;
60 Time::TimeDelta anim_interval;
66 /// Returns the name of the widget class. Used for style lookup.
67 virtual const char *get_class() const { return "widget"; }
69 void set_position(int, int);
70 void set_size(unsigned, unsigned);
72 void autosize(Geometry &) const;
74 virtual void autosize_special(const Part &, Geometry &) const { };
76 void set_geometry(const Geometry &);
77 const Geometry &get_geometry() const { return geom; }
79 void map_coords_to_ancestor(int &, int &, const Widget &) const;
80 void map_coords_to_root(int &, int &) const;
83 /** Sets the widget's parent Container. The widget must be unparented when
84 calling this function with a non-null parameter. */
85 void set_parent(Container *);
87 Container *get_parent() const { return parent; }
89 /** Finds the closest ancestor of a specific type. */
91 T *find_ancestor() const
93 for(Widget *w=parent; w; w=w->get_parent())
94 if(T *tw = dynamic_cast<T *>(w))
99 /** Sets the widget style. The name of the resource to be looked up is
100 constructed by concatenating the widget class and the style name with a
102 void set_style(const std::string &);
103 const Style &get_style() const { return *style; }
106 /** Gets a style object from the resource collection based on the class and
107 style names of the widget. */
111 void set_tooltip(const std::string &);
112 const std::string &get_tooltip() const { return tooltip; }
114 void set_visible(bool);
115 bool is_visible() const { return visible; }
116 InputType get_input_type() const { return input_type; }
117 bool is_focusable() const { return visible && input_type!=INPUT_NONE; }
119 void set_enabled(bool);
120 bool is_enabled() const { return !(state&DISABLED); }
123 void set_state(State s) { set_state(s, s); }
124 void clear_state(State s) { set_state(s, NORMAL); }
125 void set_state(State, State);
127 State get_state() const { return state; }
130 void set_animation_interval(const Time::TimeDelta &);
131 void stop_animation();
133 const Time::TimeDelta &get_animation_interval() const { return anim_interval; }
137 virtual void rebuild_hierarchy();
139 virtual void rebuild_special(const Part &);
142 void render(GL::Renderer &) const;
144 virtual void render_special(const Part &, GL::Renderer &) const { }
148 virtual void button_press(int, int, unsigned) { }
149 virtual void button_release(int, int, unsigned) { }
150 virtual void pointer_motion(int, int) { }
151 virtual void pointer_enter();
152 virtual void pointer_leave();
153 virtual void touch_press(int, int, unsigned);
154 virtual void touch_release(int, int, unsigned);
155 virtual void touch_motion(int, int, unsigned);
156 virtual bool key_press(unsigned, unsigned) { return false; }
157 virtual bool key_release(unsigned, unsigned) { return false; }
158 virtual bool character(wchar_t) { return false; }
159 virtual void focus_in();
160 virtual void focus_out();
161 virtual bool navigate(Navigation) { return false; }
162 virtual void animate(const Time::TimeDelta &) { }
164 virtual void on_size_change() { }
165 virtual void on_style_change() { }
166 virtual void on_reparent() { }