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>
35 void position(int, int);
36 void size(unsigned, unsigned);
37 void style(const std::string &);
40 sigc::signal<void, bool> signal_visibility_changed;
41 sigc::signal<void> signal_autosize_changed;
42 sigc::signal<void> signal_request_focus;
43 sigc::signal<void> signal_grab_pointer;
44 sigc::signal<void> signal_ungrab_pointer;
45 sigc::signal<void, const Time::TimeDelta &> signal_request_animation;
46 sigc::signal<void> signal_rebuild_needed;
50 std::string style_name;
51 const Style *style = nullptr;
54 InputType input_type = INPUT_NONE;
55 Container *parent = nullptr;
58 bool rebuild_needed = false;
59 Time::TimeDelta anim_interval;
65 /// Returns the name of the widget class. Used for style lookup.
66 virtual const char *get_class() const { return "widget"; }
68 void set_position(int, int);
69 void set_size(unsigned, unsigned);
71 void autosize(Geometry &) const;
73 virtual void autosize_special(const Part &, Geometry &) const { };
75 void set_geometry(const Geometry &);
76 const Geometry &get_geometry() const { return geom; }
78 void map_coords_to_ancestor(int &, int &, const Widget &) const;
79 void map_coords_to_root(int &, int &) const;
82 /** Sets the widget's parent Container. The widget must be unparented when
83 calling this function with a non-null parameter. */
84 void set_parent(Container *);
86 Container *get_parent() const { return parent; }
88 /** Finds the closest ancestor of a specific type. */
90 T *find_ancestor() const
92 for(Widget *w=parent; w; w=w->get_parent())
93 if(T *tw = dynamic_cast<T *>(w))
98 /** Sets the widget style. The name of the resource to be looked up is
99 constructed by concatenating the widget class and the style name with a
101 void set_style(const std::string &);
102 const Style &get_style() const { return *style; }
105 /** Gets a style object from the resource collection based on the class and
106 style names of the widget. */
110 void set_tooltip(const std::string &);
111 const std::string &get_tooltip() const { return tooltip; }
113 void set_visible(bool);
114 bool is_visible() const { return visible; }
115 InputType get_input_type() const { return input_type; }
116 bool is_focusable() const { return visible && input_type!=INPUT_NONE; }
118 void set_enabled(bool);
119 bool is_enabled() const { return !(state&DISABLED); }
122 void set_state(State s) { set_state(s, s); }
123 void clear_state(State s) { set_state(s, NORMAL); }
124 void set_state(State, State);
126 State get_state() const { return state; }
129 void set_animation_interval(const Time::TimeDelta &);
130 void stop_animation();
132 const Time::TimeDelta &get_animation_interval() const { return anim_interval; }
136 virtual void rebuild_hierarchy();
138 virtual void rebuild_special(const Part &);
141 void render(GL::Renderer &) const;
143 virtual void render_special(const Part &, GL::Renderer &) const { }
147 virtual void button_press(int, int, unsigned) { }
148 virtual void button_release(int, int, unsigned) { }
149 virtual void pointer_motion(int, int) { }
150 virtual void pointer_enter();
151 virtual void pointer_leave();
152 virtual void touch_press(int, int, unsigned);
153 virtual void touch_release(int, int, unsigned);
154 virtual void touch_motion(int, int, unsigned);
155 virtual bool key_press(unsigned, unsigned) { return false; }
156 virtual bool key_release(unsigned, unsigned) { return false; }
157 virtual bool character(wchar_t) { return false; }
158 virtual void focus_in();
159 virtual void focus_out();
160 virtual bool navigate(Navigation) { return false; }
161 virtual void animate(const Time::TimeDelta &) { }
163 virtual void on_size_change() { }
164 virtual void on_style_change() { }
165 virtual void on_reparent() { }