1 #ifndef MSP_GLTK_WIDGET_H_
2 #define MSP_GLTK_WIDGET_H_
5 #include <msp/datafile/objectloader.h>
6 #include <msp/gl/renderer.h>
8 #include "inputmethod.h"
21 Base class for all widgets.
25 friend class Container;
28 class Loader: public DataFile::ObjectLoader<Widget>
33 void position(int, int);
34 void size(unsigned, unsigned);
35 void style(const std::string &);
38 sigc::signal<void, bool> signal_visibility_changed;
39 sigc::signal<void> signal_autosize_changed;
40 sigc::signal<void> signal_request_focus;
41 sigc::signal<void> signal_grab_pointer;
42 sigc::signal<void> signal_ungrab_pointer;
46 std::string style_name;
57 Widget(const Widget &);
58 Widget &operator=(const Widget &);
62 /// Returns the name of the widget class. Used for style lookup.
63 virtual const char *get_class() const { return "widget"; }
65 void set_position(int, int);
66 void set_size(unsigned, unsigned);
68 void autosize(Geometry &) const;
70 virtual void autosize_special(const Part &, Geometry &) const { };
72 void set_geometry(const Geometry &);
73 const Geometry &get_geometry() const { return geom; }
75 void map_coords_to_ancestor(int &, int &, const Widget &) const;
78 /** Sets the widget's parent Container. The widget must be unparented when
79 calling this function with a non-null parameter. */
80 void set_parent(Container *);
82 Container *get_parent() const { return parent; }
84 /** Finds the closest ancestor of a specific type. */
86 T *find_ancestor() const
88 for(Widget *w=parent; w; w=w->get_parent())
89 if(T *tw = dynamic_cast<T *>(w))
94 /** Sets the widget style. The name of the resource to be looked up is
95 constructed by concatenating the widget class and the style name with a
97 void set_style(const std::string &);
98 const Style &get_style() const { return *style; }
101 /** Gets a style object from the resource collection based on the class and
102 style names of the widget. */
106 void set_tooltip(const std::string &);
107 const std::string &get_tooltip() const { return tooltip; }
109 void set_visible(bool);
110 bool is_visible() const { return visible; }
111 InputType get_input_type() const { return input_type; }
112 bool is_focusable() const { return visible && input_type!=INPUT_NONE; }
114 void set_enabled(bool);
115 bool is_enabled() const { return !(state&DISABLED); }
118 void set_focusable(bool);
121 void set_state(State s) { set_state(s, s); }
122 void clear_state(State s) { set_state(s, NORMAL); }
123 void set_state(State, State);
125 State get_state() const { return state; }
129 virtual void rebuild_special(const Part &);
132 void render(GL::Renderer &) const;
134 virtual void render_special(const Part &, GL::Renderer &) const { }
138 virtual void button_press(int, int, unsigned) { }
139 virtual void button_release(int, int, unsigned) { }
140 virtual void pointer_motion(int, int) { }
141 virtual void pointer_enter();
142 virtual void pointer_leave();
143 virtual void touch_press(int, int, unsigned);
144 virtual void touch_release(int, int, unsigned);
145 virtual void touch_motion(int, int, unsigned);
146 virtual bool key_press(unsigned, unsigned) { return false; }
147 virtual bool key_release(unsigned, unsigned) { return false; }
148 virtual bool character(wchar_t) { return false; }
149 virtual void focus_in();
150 virtual void focus_out();
152 virtual void on_geometry_change() { }
153 virtual void on_style_change() { }
154 virtual void on_reparent() { }